1 2 /* 3 * Copyright (C) Igor Sysoev 4 * Copyright (C) Valentin V. Bartenev 5 * Copyright (C) NGINX, Inc. 6 */ 7 8 #include <nxt_router.h> 9 #include <nxt_conf.h> 10 #if (NXT_TLS) 11 #include <nxt_cert.h> 12 #endif 13 #include <nxt_http.h> 14 #include <nxt_port_memory_int.h> 15 #include <nxt_unit_request.h> 16 #include <nxt_unit_response.h> 17 #include <nxt_router_request.h> 18 #include <nxt_app_queue.h> 19 #include <nxt_port_queue.h> 20 21 #define NXT_SHARED_PORT_ID 0xFFFFu 22 23 typedef struct { 24 nxt_str_t type; 25 uint32_t processes; 26 uint32_t max_processes; 27 uint32_t spare_processes; 28 nxt_msec_t timeout; 29 nxt_msec_t idle_timeout; 30 uint32_t requests; 31 nxt_conf_value_t *limits_value; 32 nxt_conf_value_t *processes_value; 33 nxt_conf_value_t *targets_value; 34 } nxt_router_app_conf_t; 35 36 37 typedef struct { 38 nxt_str_t pass; 39 nxt_str_t application; 40 } nxt_router_listener_conf_t; 41 42 43 #if (NXT_TLS) 44 45 typedef struct { 46 nxt_str_t name; 47 nxt_socket_conf_t *socket_conf; 48 nxt_router_temp_conf_t *temp_conf; 49 nxt_tls_init_t *tls_init; 50 nxt_bool_t last; 51 52 nxt_queue_link_t link; /* for nxt_socket_conf_t.tls */ 53 } nxt_router_tlssock_t; 54 55 #endif 56 57 58 typedef struct { 59 nxt_str_t *name; 60 nxt_socket_conf_t *socket_conf; 61 nxt_router_temp_conf_t *temp_conf; 62 nxt_bool_t last; 63 } nxt_socket_rpc_t; 64 65 66 typedef struct { 67 nxt_app_t *app; 68 nxt_router_temp_conf_t *temp_conf; 69 } nxt_app_rpc_t; 70 71 72 typedef struct { 73 nxt_app_joint_t *app_joint; 74 uint32_t generation; 75 } nxt_app_joint_rpc_t; 76 77 78 static nxt_int_t nxt_router_prefork(nxt_task_t *task, nxt_process_t *process, 79 nxt_mp_t *mp); 80 static nxt_int_t nxt_router_start(nxt_task_t *task, nxt_process_data_t *data); 81 static void nxt_router_greet_controller(nxt_task_t *task, 82 nxt_port_t *controller_port); 83 84 static nxt_int_t nxt_router_start_app_process(nxt_task_t *task, nxt_app_t *app); 85 86 static void nxt_router_new_port_handler(nxt_task_t *task, 87 nxt_port_recv_msg_t *msg); 88 static void nxt_router_conf_data_handler(nxt_task_t *task, 89 nxt_port_recv_msg_t *msg); 90 static void nxt_router_app_restart_handler(nxt_task_t *task, 91 nxt_port_recv_msg_t *msg); 92 static void nxt_router_remove_pid_handler(nxt_task_t *task, 93 nxt_port_recv_msg_t *msg); 94 static void nxt_router_access_log_reopen_handler(nxt_task_t *task, 95 nxt_port_recv_msg_t *msg); 96 97 static nxt_router_temp_conf_t *nxt_router_temp_conf(nxt_task_t *task); 98 static void nxt_router_conf_apply(nxt_task_t *task, void *obj, void *data); 99 static void nxt_router_conf_ready(nxt_task_t *task, 100 nxt_router_temp_conf_t *tmcf); 101 static void nxt_router_conf_error(nxt_task_t *task, 102 nxt_router_temp_conf_t *tmcf); 103 static void nxt_router_conf_send(nxt_task_t *task, 104 nxt_router_temp_conf_t *tmcf, nxt_port_msg_type_t type); 105 106 static nxt_int_t nxt_router_conf_create(nxt_task_t *task, 107 nxt_router_temp_conf_t *tmcf, u_char *start, u_char *end); 108 static nxt_int_t nxt_router_conf_process_static(nxt_task_t *task, 109 nxt_router_conf_t *rtcf, nxt_conf_value_t *conf); 110 111 static nxt_app_t *nxt_router_app_find(nxt_queue_t *queue, nxt_str_t *name); 112 static nxt_int_t nxt_router_apps_hash_test(nxt_lvlhsh_query_t *lhq, void *data); 113 static nxt_int_t nxt_router_apps_hash_add(nxt_router_conf_t *rtcf, 114 nxt_app_t *app); 115 static nxt_app_t *nxt_router_apps_hash_get(nxt_router_conf_t *rtcf, 116 nxt_str_t *name); 117 static void nxt_router_apps_hash_use(nxt_task_t *task, nxt_router_conf_t *rtcf, 118 int i); 119 120 static nxt_int_t nxt_router_app_queue_init(nxt_task_t *task, 121 nxt_port_t *port); 122 static nxt_int_t nxt_router_port_queue_init(nxt_task_t *task, 123 nxt_port_t *port); 124 static nxt_int_t nxt_router_port_queue_map(nxt_task_t *task, 125 nxt_port_t *port, nxt_fd_t fd); 126 static void nxt_router_listen_socket_rpc_create(nxt_task_t *task, 127 nxt_router_temp_conf_t *tmcf, nxt_socket_conf_t *skcf); 128 static void nxt_router_listen_socket_ready(nxt_task_t *task, 129 nxt_port_recv_msg_t *msg, void *data); 130 static void nxt_router_listen_socket_error(nxt_task_t *task, 131 nxt_port_recv_msg_t *msg, void *data); 132 #if (NXT_TLS) 133 static void nxt_router_tls_rpc_handler(nxt_task_t *task, 134 nxt_port_recv_msg_t *msg, void *data); 135 static nxt_int_t nxt_router_conf_tls_insert(nxt_router_temp_conf_t *tmcf, 136 nxt_conf_value_t *value, nxt_socket_conf_t *skcf, nxt_tls_init_t *tls_init, 137 nxt_bool_t last); 138 #endif 139 static void nxt_router_app_rpc_create(nxt_task_t *task, 140 nxt_router_temp_conf_t *tmcf, nxt_app_t *app); 141 static void nxt_router_app_prefork_ready(nxt_task_t *task, 142 nxt_port_recv_msg_t *msg, void *data); 143 static void nxt_router_app_prefork_error(nxt_task_t *task, 144 nxt_port_recv_msg_t *msg, void *data); 145 static nxt_socket_conf_t *nxt_router_socket_conf(nxt_task_t *task, 146 nxt_router_temp_conf_t *tmcf, nxt_str_t *name); 147 static nxt_int_t nxt_router_listen_socket_find(nxt_router_temp_conf_t *tmcf, 148 nxt_socket_conf_t *nskcf, nxt_sockaddr_t *sa); 149 150 static nxt_int_t nxt_router_engines_create(nxt_task_t *task, 151 nxt_router_t *router, nxt_router_temp_conf_t *tmcf, 152 const nxt_event_interface_t *interface); 153 static nxt_int_t nxt_router_engine_conf_create(nxt_router_temp_conf_t *tmcf, 154 nxt_router_engine_conf_t *recf); 155 static nxt_int_t nxt_router_engine_conf_update(nxt_router_temp_conf_t *tmcf, 156 nxt_router_engine_conf_t *recf); 157 static nxt_int_t nxt_router_engine_conf_delete(nxt_router_temp_conf_t *tmcf, 158 nxt_router_engine_conf_t *recf); 159 static nxt_int_t nxt_router_engine_joints_create(nxt_router_temp_conf_t *tmcf, 160 nxt_router_engine_conf_t *recf, nxt_queue_t *sockets, 161 nxt_work_handler_t handler); 162 static nxt_int_t nxt_router_engine_quit(nxt_router_temp_conf_t *tmcf, 163 nxt_router_engine_conf_t *recf); 164 static nxt_int_t nxt_router_engine_joints_delete(nxt_router_temp_conf_t *tmcf, 165 nxt_router_engine_conf_t *recf, nxt_queue_t *sockets); 166 167 static nxt_int_t nxt_router_threads_create(nxt_task_t *task, nxt_runtime_t *rt, 168 nxt_router_temp_conf_t *tmcf); 169 static nxt_int_t nxt_router_thread_create(nxt_task_t *task, nxt_runtime_t *rt, 170 nxt_event_engine_t *engine); 171 static void nxt_router_apps_sort(nxt_task_t *task, nxt_router_t *router, 172 nxt_router_temp_conf_t *tmcf); 173 174 static void nxt_router_engines_post(nxt_router_t *router, 175 nxt_router_temp_conf_t *tmcf); 176 static void nxt_router_engine_post(nxt_event_engine_t *engine, 177 nxt_work_t *jobs); 178 179 static void nxt_router_thread_start(void *data); 180 static void nxt_router_rt_add_port(nxt_task_t *task, void *obj, 181 void *data); 182 static void nxt_router_listen_socket_create(nxt_task_t *task, void *obj, 183 void *data); 184 static void nxt_router_listen_socket_update(nxt_task_t *task, void *obj, 185 void *data); 186 static void nxt_router_listen_socket_delete(nxt_task_t *task, void *obj, 187 void *data); 188 static void nxt_router_worker_thread_quit(nxt_task_t *task, void *obj, 189 void *data); 190 static void nxt_router_listen_socket_close(nxt_task_t *task, void *obj, 191 void *data); 192 static void nxt_router_thread_exit_handler(nxt_task_t *task, void *obj, 193 void *data); 194 static void nxt_router_req_headers_ack_handler(nxt_task_t *task, 195 nxt_port_recv_msg_t *msg, nxt_request_rpc_data_t *req_rpc_data); 196 static void nxt_router_listen_socket_release(nxt_task_t *task, 197 nxt_socket_conf_t *skcf); 198 199 static void nxt_router_access_log_writer(nxt_task_t *task, 200 nxt_http_request_t *r, nxt_router_access_log_t *access_log); 201 static u_char *nxt_router_access_log_date(u_char *buf, nxt_realtime_t *now, 202 struct tm *tm, size_t size, const char *format); 203 static void nxt_router_access_log_open(nxt_task_t *task, 204 nxt_router_temp_conf_t *tmcf); 205 static void nxt_router_access_log_ready(nxt_task_t *task, 206 nxt_port_recv_msg_t *msg, void *data); 207 static void nxt_router_access_log_error(nxt_task_t *task, 208 nxt_port_recv_msg_t *msg, void *data); 209 static void nxt_router_access_log_release(nxt_task_t *task, 210 nxt_thread_spinlock_t *lock, nxt_router_access_log_t *access_log); 211 static void nxt_router_access_log_reopen_completion(nxt_task_t *task, void *obj, 212 void *data); 213 static void nxt_router_access_log_reopen_ready(nxt_task_t *task, 214 nxt_port_recv_msg_t *msg, void *data); 215 static void nxt_router_access_log_reopen_error(nxt_task_t *task, 216 nxt_port_recv_msg_t *msg, void *data); 217 218 static void nxt_router_app_port_ready(nxt_task_t *task, 219 nxt_port_recv_msg_t *msg, void *data); 220 static nxt_int_t nxt_router_app_shared_port_send(nxt_task_t *task, 221 nxt_port_t *app_port); 222 static void nxt_router_app_port_error(nxt_task_t *task, 223 nxt_port_recv_msg_t *msg, void *data); 224 225 static void nxt_router_app_use(nxt_task_t *task, nxt_app_t *app, int i); 226 static void nxt_router_app_unlink(nxt_task_t *task, nxt_app_t *app); 227 228 static void nxt_router_app_port_release(nxt_task_t *task, nxt_port_t *port, 229 nxt_apr_action_t action); 230 static void nxt_router_app_port_get(nxt_task_t *task, nxt_app_t *app, 231 nxt_request_rpc_data_t *req_rpc_data); 232 static void nxt_router_http_request_error(nxt_task_t *task, void *obj, 233 void *data); 234 static void nxt_router_http_request_done(nxt_task_t *task, void *obj, 235 void *data); 236 237 static void nxt_router_dummy_buf_completion(nxt_task_t *task, void *obj, 238 void *data); 239 static void nxt_router_app_prepare_request(nxt_task_t *task, 240 nxt_request_rpc_data_t *req_rpc_data); 241 static nxt_buf_t *nxt_router_prepare_msg(nxt_task_t *task, 242 nxt_http_request_t *r, nxt_app_t *app, const nxt_str_t *prefix); 243 244 static void nxt_router_app_timeout(nxt_task_t *task, void *obj, void *data); 245 static void nxt_router_adjust_idle_timer(nxt_task_t *task, void *obj, 246 void *data); 247 static void nxt_router_app_idle_timeout(nxt_task_t *task, void *obj, 248 void *data); 249 static void nxt_router_app_joint_release_handler(nxt_task_t *task, void *obj, 250 void *data); 251 static void nxt_router_free_app(nxt_task_t *task, void *obj, void *data); 252 253 static const nxt_http_request_state_t nxt_http_request_send_state; 254 static void nxt_http_request_send_body(nxt_task_t *task, void *obj, void *data); 255 256 static void nxt_router_app_joint_use(nxt_task_t *task, 257 nxt_app_joint_t *app_joint, int i); 258 259 static void nxt_router_http_request_release_post(nxt_task_t *task, 260 nxt_http_request_t *r); 261 static void nxt_router_http_request_release(nxt_task_t *task, void *obj, 262 void *data); 263 static void nxt_router_oosm_handler(nxt_task_t *task, nxt_port_recv_msg_t *msg); 264 static void nxt_router_get_port_handler(nxt_task_t *task, 265 nxt_port_recv_msg_t *msg); 266 static void nxt_router_get_mmap_handler(nxt_task_t *task, 267 nxt_port_recv_msg_t *msg); 268 269 extern const nxt_http_request_state_t nxt_http_websocket; 270 271 static nxt_router_t *nxt_router; 272 273 static const nxt_str_t http_prefix = nxt_string("HTTP_"); 274 static const nxt_str_t empty_prefix = nxt_string(""); 275 276 static const nxt_str_t *nxt_app_msg_prefix[] = { 277 &empty_prefix, 278 &empty_prefix, 279 &http_prefix, 280 &http_prefix, 281 &http_prefix, 282 &empty_prefix, 283 }; 284 285 286 static const nxt_port_handlers_t nxt_router_process_port_handlers = { 287 .quit = nxt_signal_quit_handler, 288 .new_port = nxt_router_new_port_handler, 289 .get_port = nxt_router_get_port_handler, 290 .change_file = nxt_port_change_log_file_handler, 291 .mmap = nxt_port_mmap_handler, 292 .get_mmap = nxt_router_get_mmap_handler, 293 .data = nxt_router_conf_data_handler, 294 .app_restart = nxt_router_app_restart_handler, 295 .remove_pid = nxt_router_remove_pid_handler, 296 .access_log = nxt_router_access_log_reopen_handler, 297 .rpc_ready = nxt_port_rpc_handler, 298 .rpc_error = nxt_port_rpc_handler, 299 .oosm = nxt_router_oosm_handler, 300 }; 301 302 303 const nxt_process_init_t nxt_router_process = { 304 .name = "router", 305 .type = NXT_PROCESS_ROUTER, 306 .prefork = nxt_router_prefork, 307 .restart = 1, 308 .setup = nxt_process_core_setup, 309 .start = nxt_router_start, 310 .port_handlers = &nxt_router_process_port_handlers, 311 .signals = nxt_process_signals, 312 }; 313 314 315 /* Queues of nxt_socket_conf_t */ 316 nxt_queue_t creating_sockets; 317 nxt_queue_t pending_sockets; 318 nxt_queue_t updating_sockets; 319 nxt_queue_t keeping_sockets; 320 nxt_queue_t deleting_sockets; 321 322 323 static nxt_int_t 324 nxt_router_prefork(nxt_task_t *task, nxt_process_t *process, nxt_mp_t *mp) 325 { 326 nxt_runtime_stop_app_processes(task, task->thread->runtime); 327 328 return NXT_OK; 329 } 330 331 332 static nxt_int_t 333 nxt_router_start(nxt_task_t *task, nxt_process_data_t *data) 334 { 335 nxt_int_t ret; 336 nxt_port_t *controller_port; 337 nxt_router_t *router; 338 nxt_runtime_t *rt; 339 340 rt = task->thread->runtime; 341 342 nxt_log(task, NXT_LOG_INFO, "router started"); 343 344 #if (NXT_TLS) 345 rt->tls = nxt_service_get(rt->services, "SSL/TLS", "OpenSSL"); 346 if (nxt_slow_path(rt->tls == NULL)) { 347 return NXT_ERROR; 348 } 349 350 ret = rt->tls->library_init(task); 351 if (nxt_slow_path(ret != NXT_OK)) { 352 return ret; 353 } 354 #endif 355 356 ret = nxt_http_init(task); 357 if (nxt_slow_path(ret != NXT_OK)) { 358 return ret; 359 } 360 361 router = nxt_zalloc(sizeof(nxt_router_t)); 362 if (nxt_slow_path(router == NULL)) { 363 return NXT_ERROR; 364 } 365 366 nxt_queue_init(&router->engines); 367 nxt_queue_init(&router->sockets); 368 nxt_queue_init(&router->apps); 369 370 nxt_router = router; 371 372 controller_port = rt->port_by_type[NXT_PROCESS_CONTROLLER]; 373 if (controller_port != NULL) { 374 nxt_router_greet_controller(task, controller_port); 375 } 376 377 return NXT_OK; 378 } 379 380 381 static void 382 nxt_router_greet_controller(nxt_task_t *task, nxt_port_t *controller_port) 383 { 384 nxt_port_socket_write(task, controller_port, NXT_PORT_MSG_PROCESS_READY, 385 -1, 0, 0, NULL); 386 } 387 388 389 static void 390 nxt_router_start_app_process_handler(nxt_task_t *task, nxt_port_t *port, 391 void *data) 392 { 393 size_t size; 394 uint32_t stream; 395 nxt_mp_t *mp; 396 nxt_int_t ret; 397 nxt_app_t *app; 398 nxt_buf_t *b; 399 nxt_port_t *main_port; 400 nxt_runtime_t *rt; 401 nxt_app_joint_rpc_t *app_joint_rpc; 402 403 app = data; 404 405 rt = task->thread->runtime; 406 main_port = rt->port_by_type[NXT_PROCESS_MAIN]; 407 408 nxt_debug(task, "app '%V' %p start process", &app->name, app); 409 410 size = app->name.length + 1 + app->conf.length; 411 412 b = nxt_buf_mem_ts_alloc(task, task->thread->engine->mem_pool, size); 413 414 if (nxt_slow_path(b == NULL)) { 415 goto failed; 416 } 417 418 nxt_buf_cpystr(b, &app->name); 419 *b->mem.free++ = '\0'; 420 nxt_buf_cpystr(b, &app->conf); 421 422 app_joint_rpc = nxt_port_rpc_register_handler_ex(task, port, 423 nxt_router_app_port_ready, 424 nxt_router_app_port_error, 425 sizeof(nxt_app_joint_rpc_t)); 426 if (nxt_slow_path(app_joint_rpc == NULL)) { 427 goto failed; 428 } 429 430 stream = nxt_port_rpc_ex_stream(app_joint_rpc); 431 432 ret = nxt_port_socket_write(task, main_port, NXT_PORT_MSG_START_PROCESS, 433 -1, stream, port->id, b); 434 if (nxt_slow_path(ret != NXT_OK)) { 435 nxt_port_rpc_cancel(task, port, stream); 436 437 goto failed; 438 } 439 440 app_joint_rpc->app_joint = app->joint; 441 app_joint_rpc->generation = app->generation; 442 443 nxt_router_app_joint_use(task, app->joint, 1); 444 445 nxt_router_app_use(task, app, -1); 446 447 return; 448 449 failed: 450 451 if (b != NULL) { 452 mp = b->data; 453 nxt_mp_free(mp, b); 454 nxt_mp_release(mp); 455 } 456 457 nxt_thread_mutex_lock(&app->mutex); 458 459 app->pending_processes--; 460 461 nxt_thread_mutex_unlock(&app->mutex); 462 463 nxt_router_app_use(task, app, -1); 464 } 465 466 467 static void 468 nxt_router_app_joint_use(nxt_task_t *task, nxt_app_joint_t *app_joint, int i) 469 { 470 app_joint->use_count += i; 471 472 if (app_joint->use_count == 0) { 473 nxt_assert(app_joint->app == NULL); 474 475 nxt_free(app_joint); 476 } 477 } 478 479 480 static nxt_int_t 481 nxt_router_start_app_process(nxt_task_t *task, nxt_app_t *app) 482 { 483 nxt_int_t res; 484 nxt_port_t *router_port; 485 nxt_runtime_t *rt; 486 487 nxt_debug(task, "app '%V' start process", &app->name); 488 489 rt = task->thread->runtime; 490 router_port = rt->port_by_type[NXT_PROCESS_ROUTER]; 491 492 nxt_router_app_use(task, app, 1); 493 494 res = nxt_port_post(task, router_port, nxt_router_start_app_process_handler, 495 app); 496 497 if (res == NXT_OK) { 498 return res; 499 } 500 501 nxt_thread_mutex_lock(&app->mutex); 502 503 app->pending_processes--; 504 505 nxt_thread_mutex_unlock(&app->mutex); 506 507 nxt_router_app_use(task, app, -1); 508 509 return NXT_ERROR; 510 } 511 512 513 nxt_inline nxt_bool_t 514 nxt_router_msg_cancel(nxt_task_t *task, nxt_request_rpc_data_t *req_rpc_data) 515 { 516 nxt_buf_t *b, *next; 517 nxt_bool_t cancelled; 518 nxt_port_t *app_port; 519 nxt_msg_info_t *msg_info; 520 521 msg_info = &req_rpc_data->msg_info; 522 523 if (msg_info->buf == NULL) { 524 return 0; 525 } 526 527 app_port = req_rpc_data->app_port; 528 529 if (app_port != NULL && app_port->id == NXT_SHARED_PORT_ID) { 530 cancelled = nxt_app_queue_cancel(app_port->queue, 531 msg_info->tracking_cookie, 532 req_rpc_data->stream); 533 534 if (cancelled) { 535 nxt_debug(task, "stream #%uD: cancelled by router", 536 req_rpc_data->stream); 537 } 538 539 } else { 540 cancelled = 0; 541 } 542 543 for (b = msg_info->buf; b != NULL; b = next) { 544 next = b->next; 545 b->next = NULL; 546 547 if (b->is_port_mmap_sent) { 548 b->is_port_mmap_sent = cancelled == 0; 549 } 550 551 b->completion_handler(task, b, b->parent); 552 } 553 554 msg_info->buf = NULL; 555 556 return cancelled; 557 } 558 559 560 nxt_inline nxt_bool_t 561 nxt_queue_chk_remove(nxt_queue_link_t *lnk) 562 { 563 if (lnk->next != NULL) { 564 nxt_queue_remove(lnk); 565 566 lnk->next = NULL; 567 568 return 1; 569 } 570 571 return 0; 572 } 573 574 575 nxt_inline void 576 nxt_request_rpc_data_unlink(nxt_task_t *task, 577 nxt_request_rpc_data_t *req_rpc_data) 578 { 579 nxt_app_t *app; 580 nxt_bool_t unlinked; 581 nxt_http_request_t *r; 582 583 nxt_router_msg_cancel(task, req_rpc_data); 584 585 if (req_rpc_data->app_port != NULL) { 586 nxt_router_app_port_release(task, req_rpc_data->app_port, 587 req_rpc_data->apr_action); 588 589 req_rpc_data->app_port = NULL; 590 } 591 592 app = req_rpc_data->app; 593 r = req_rpc_data->request; 594 595 if (r != NULL) { 596 r->timer_data = NULL; 597 598 nxt_router_http_request_release_post(task, r); 599 600 r->req_rpc_data = NULL; 601 req_rpc_data->request = NULL; 602 603 if (app != NULL) { 604 unlinked = 0; 605 606 nxt_thread_mutex_lock(&app->mutex); 607 608 if (r->app_link.next != NULL) { 609 nxt_queue_remove(&r->app_link); 610 r->app_link.next = NULL; 611 612 unlinked = 1; 613 } 614 615 nxt_thread_mutex_unlock(&app->mutex); 616 617 if (unlinked) { 618 nxt_mp_release(r->mem_pool); 619 } 620 } 621 } 622 623 if (app != NULL) { 624 nxt_router_app_use(task, app, -1); 625 626 req_rpc_data->app = NULL; 627 } 628 629 if (req_rpc_data->msg_info.body_fd != -1) { 630 nxt_fd_close(req_rpc_data->msg_info.body_fd); 631 632 req_rpc_data->msg_info.body_fd = -1; 633 } 634 635 if (req_rpc_data->rpc_cancel) { 636 req_rpc_data->rpc_cancel = 0; 637 638 nxt_port_rpc_cancel(task, task->thread->engine->port, 639 req_rpc_data->stream); 640 } 641 } 642 643 644 static void 645 nxt_router_new_port_handler(nxt_task_t *task, nxt_port_recv_msg_t *msg) 646 { 647 nxt_int_t res; 648 nxt_app_t *app; 649 nxt_port_t *port, *main_app_port; 650 nxt_runtime_t *rt; 651 652 nxt_port_new_port_handler(task, msg); 653 654 port = msg->u.new_port; 655 656 if (port != NULL && port->type == NXT_PROCESS_CONTROLLER) { 657 nxt_router_greet_controller(task, msg->u.new_port); 658 } 659 660 if (port == NULL || port->type != NXT_PROCESS_APP) { 661 662 if (msg->port_msg.stream == 0) { 663 return; 664 } 665 666 msg->port_msg.type = _NXT_PORT_MSG_RPC_ERROR; 667 668 } else { 669 if (msg->fd[1] != -1) { 670 res = nxt_router_port_queue_map(task, port, msg->fd[1]); 671 if (nxt_slow_path(res != NXT_OK)) { 672 return; 673 } 674 675 nxt_fd_close(msg->fd[1]); 676 msg->fd[1] = -1; 677 } 678 } 679 680 if (msg->port_msg.stream != 0) { 681 nxt_port_rpc_handler(task, msg); 682 return; 683 } 684 685 /* 686 * Port with "id == 0" is application 'main' port and it always 687 * should come with non-zero stream. 688 */ 689 nxt_assert(port->id != 0); 690 691 /* Find 'main' app port and get app reference. */ 692 rt = task->thread->runtime; 693 694 /* 695 * It is safe to access 'runtime->ports' hash because 'NEW_PORT' 696 * sent to main port (with id == 0) and processed in main thread. 697 */ 698 main_app_port = nxt_port_hash_find(&rt->ports, port->pid, 0); 699 nxt_assert(main_app_port != NULL); 700 701 app = main_app_port->app; 702 703 if (nxt_fast_path(app != NULL)) { 704 nxt_thread_mutex_lock(&app->mutex); 705 706 /* TODO here should be find-and-add code because there can be 707 port waiters in port_hash */ 708 nxt_port_hash_add(&app->port_hash, port); 709 app->port_hash_count++; 710 711 nxt_thread_mutex_unlock(&app->mutex); 712 713 port->app = app; 714 } 715 716 port->main_app_port = main_app_port; 717 718 nxt_port_socket_write(task, port, NXT_PORT_MSG_PORT_ACK, -1, 0, 0, NULL); 719 } 720 721 722 static void 723 nxt_router_conf_data_handler(nxt_task_t *task, nxt_port_recv_msg_t *msg) 724 { 725 void *p; 726 size_t size; 727 nxt_int_t ret; 728 nxt_port_t *port; 729 nxt_router_temp_conf_t *tmcf; 730 731 port = nxt_runtime_port_find(task->thread->runtime, 732 msg->port_msg.pid, 733 msg->port_msg.reply_port); 734 if (nxt_slow_path(port == NULL)) { 735 nxt_alert(task, "conf_data_handler: reply port not found"); 736 return; 737 } 738 739 p = MAP_FAILED; 740 741 /* 742 * Ancient compilers like gcc 4.8.5 on CentOS 7 wants 'size' to be 743 * initialized in 'cleanup' section. 744 */ 745 size = 0; 746 747 tmcf = nxt_router_temp_conf(task); 748 if (nxt_slow_path(tmcf == NULL)) { 749 goto fail; 750 } 751 752 if (nxt_slow_path(msg->fd[0] == -1)) { 753 nxt_alert(task, "conf_data_handler: invalid shm fd"); 754 goto fail; 755 } 756 757 if (nxt_buf_mem_used_size(&msg->buf->mem) != sizeof(size_t)) { 758 nxt_alert(task, "conf_data_handler: unexpected buffer size (%d)", 759 (int) nxt_buf_mem_used_size(&msg->buf->mem)); 760 goto fail; 761 } 762 763 nxt_memcpy(&size, msg->buf->mem.pos, sizeof(size_t)); 764 765 p = nxt_mem_mmap(NULL, size, PROT_READ, MAP_SHARED, msg->fd[0], 0); 766 767 nxt_fd_close(msg->fd[0]); 768 msg->fd[0] = -1; 769 770 if (nxt_slow_path(p == MAP_FAILED)) { 771 goto fail; 772 } 773 774 nxt_debug(task, "conf_data_handler(%uz): %*s", size, size, p); 775 776 tmcf->router_conf->router = nxt_router; 777 tmcf->stream = msg->port_msg.stream; 778 tmcf->port = port; 779 780 nxt_port_use(task, tmcf->port, 1); 781 782 ret = nxt_router_conf_create(task, tmcf, p, nxt_pointer_to(p, size)); 783 784 if (nxt_fast_path(ret == NXT_OK)) { 785 nxt_router_conf_apply(task, tmcf, NULL); 786 787 } else { 788 nxt_router_conf_error(task, tmcf); 789 } 790 791 goto cleanup; 792 793 fail: 794 795 nxt_port_socket_write(task, port, NXT_PORT_MSG_RPC_ERROR, -1, 796 msg->port_msg.stream, 0, NULL); 797 798 if (tmcf != NULL) { 799 nxt_mp_release(tmcf->mem_pool); 800 } 801 802 cleanup: 803 804 if (p != MAP_FAILED) { 805 nxt_mem_munmap(p, size); 806 } 807 808 if (msg->fd[0] != -1) { 809 nxt_fd_close(msg->fd[0]); 810 msg->fd[0] = -1; 811 } 812 } 813 814 815 static void 816 nxt_router_app_restart_handler(nxt_task_t *task, nxt_port_recv_msg_t *msg) 817 { 818 nxt_app_t *app; 819 nxt_int_t ret; 820 nxt_str_t app_name; 821 nxt_port_t *port, *reply_port, *shared_port, *old_shared_port; 822 nxt_port_msg_type_t reply; 823 824 reply_port = nxt_runtime_port_find(task->thread->runtime, 825 msg->port_msg.pid, 826 msg->port_msg.reply_port); 827 if (nxt_slow_path(reply_port == NULL)) { 828 nxt_alert(task, "app_restart_handler: reply port not found"); 829 return; 830 } 831 832 app_name.length = nxt_buf_mem_used_size(&msg->buf->mem); 833 app_name.start = msg->buf->mem.pos; 834 835 nxt_debug(task, "app_restart_handler: %V", &app_name); 836 837 app = nxt_router_app_find(&nxt_router->apps, &app_name); 838 839 if (nxt_fast_path(app != NULL)) { 840 shared_port = nxt_port_new(task, NXT_SHARED_PORT_ID, nxt_pid, 841 NXT_PROCESS_APP); 842 if (nxt_slow_path(shared_port == NULL)) { 843 goto fail; 844 } 845 846 ret = nxt_port_socket_init(task, shared_port, 0); 847 if (nxt_slow_path(ret != NXT_OK)) { 848 nxt_port_use(task, shared_port, -1); 849 goto fail; 850 } 851 852 ret = nxt_router_app_queue_init(task, shared_port); 853 if (nxt_slow_path(ret != NXT_OK)) { 854 nxt_port_write_close(shared_port); 855 nxt_port_read_close(shared_port); 856 nxt_port_use(task, shared_port, -1); 857 goto fail; 858 } 859 860 nxt_port_write_enable(task, shared_port); 861 862 nxt_thread_mutex_lock(&app->mutex); 863 864 nxt_queue_each(port, &app->ports, nxt_port_t, app_link) { 865 866 (void) nxt_port_socket_write(task, port, NXT_PORT_MSG_QUIT, -1, 867 0, 0, NULL); 868 869 } nxt_queue_loop; 870 871 app->generation++; 872 873 shared_port->app = app; 874 875 old_shared_port = app->shared_port; 876 old_shared_port->app = NULL; 877 878 app->shared_port = shared_port; 879 880 nxt_thread_mutex_unlock(&app->mutex); 881 882 nxt_port_close(task, old_shared_port); 883 nxt_port_use(task, old_shared_port, -1); 884 885 reply = NXT_PORT_MSG_RPC_READY_LAST; 886 887 } else { 888 889 fail: 890 891 reply = NXT_PORT_MSG_RPC_ERROR; 892 } 893 894 nxt_port_socket_write(task, reply_port, reply, -1, msg->port_msg.stream, 895 0, NULL); 896 } 897 898 899 static void 900 nxt_router_app_process_remove_pid(nxt_task_t *task, nxt_port_t *port, 901 void *data) 902 { 903 union { 904 nxt_pid_t removed_pid; 905 void *data; 906 } u; 907 908 u.data = data; 909 910 nxt_port_rpc_remove_peer(task, port, u.removed_pid); 911 } 912 913 914 static void 915 nxt_router_remove_pid_handler(nxt_task_t *task, nxt_port_recv_msg_t *msg) 916 { 917 nxt_event_engine_t *engine; 918 919 nxt_port_remove_pid_handler(task, msg); 920 921 nxt_queue_each(engine, &nxt_router->engines, nxt_event_engine_t, link0) 922 { 923 if (nxt_fast_path(engine->port != NULL)) { 924 nxt_port_post(task, engine->port, nxt_router_app_process_remove_pid, 925 msg->u.data); 926 } 927 } 928 nxt_queue_loop; 929 930 if (msg->port_msg.stream == 0) { 931 return; 932 } 933 934 msg->port_msg.type = _NXT_PORT_MSG_RPC_ERROR; 935 936 nxt_port_rpc_handler(task, msg); 937 } 938 939 940 static nxt_router_temp_conf_t * 941 nxt_router_temp_conf(nxt_task_t *task) 942 { 943 nxt_mp_t *mp, *tmp; 944 nxt_router_conf_t *rtcf; 945 nxt_router_temp_conf_t *tmcf; 946 947 mp = nxt_mp_create(1024, 128, 256, 32); 948 if (nxt_slow_path(mp == NULL)) { 949 return NULL; 950 } 951 952 rtcf = nxt_mp_zget(mp, sizeof(nxt_router_conf_t)); 953 if (nxt_slow_path(rtcf == NULL)) { 954 goto fail; 955 } 956 957 rtcf->mem_pool = mp; 958 959 tmp = nxt_mp_create(1024, 128, 256, 32); 960 if (nxt_slow_path(tmp == NULL)) { 961 goto fail; 962 } 963 964 tmcf = nxt_mp_zget(tmp, sizeof(nxt_router_temp_conf_t)); 965 if (nxt_slow_path(tmcf == NULL)) { 966 goto temp_fail; 967 } 968 969 tmcf->mem_pool = tmp; 970 tmcf->router_conf = rtcf; 971 tmcf->count = 1; 972 tmcf->engine = task->thread->engine; 973 974 tmcf->engines = nxt_array_create(tmcf->mem_pool, 4, 975 sizeof(nxt_router_engine_conf_t)); 976 if (nxt_slow_path(tmcf->engines == NULL)) { 977 goto temp_fail; 978 } 979 980 nxt_queue_init(&creating_sockets); 981 nxt_queue_init(&pending_sockets); 982 nxt_queue_init(&updating_sockets); 983 nxt_queue_init(&keeping_sockets); 984 nxt_queue_init(&deleting_sockets); 985 986 #if (NXT_TLS) 987 nxt_queue_init(&tmcf->tls); 988 #endif 989 990 nxt_queue_init(&tmcf->apps); 991 nxt_queue_init(&tmcf->previous); 992 993 return tmcf; 994 995 temp_fail: 996 997 nxt_mp_destroy(tmp); 998 999 fail: 1000 1001 nxt_mp_destroy(mp); 1002 1003 return NULL; 1004 } 1005 1006 1007 nxt_inline nxt_bool_t 1008 nxt_router_app_can_start(nxt_app_t *app) 1009 { 1010 return app->processes + app->pending_processes < app->max_processes 1011 && app->pending_processes < app->max_pending_processes; 1012 } 1013 1014 1015 nxt_inline nxt_bool_t 1016 nxt_router_app_need_start(nxt_app_t *app) 1017 { 1018 return (app->active_requests 1019 > app->port_hash_count + app->pending_processes) 1020 || (app->spare_processes 1021 > app->idle_processes + app->pending_processes); 1022 } 1023 1024 1025 static void 1026 nxt_router_conf_apply(nxt_task_t *task, void *obj, void *data) 1027 { 1028 nxt_int_t ret; 1029 nxt_app_t *app; 1030 nxt_router_t *router; 1031 nxt_runtime_t *rt; 1032 nxt_queue_link_t *qlk; 1033 nxt_socket_conf_t *skcf; 1034 nxt_router_conf_t *rtcf; 1035 nxt_router_temp_conf_t *tmcf; 1036 const nxt_event_interface_t *interface; 1037 #if (NXT_TLS) 1038 nxt_router_tlssock_t *tls; 1039 #endif 1040 1041 tmcf = obj; 1042 1043 qlk = nxt_queue_first(&pending_sockets); 1044 1045 if (qlk != nxt_queue_tail(&pending_sockets)) { 1046 nxt_queue_remove(qlk); 1047 nxt_queue_insert_tail(&creating_sockets, qlk); 1048 1049 skcf = nxt_queue_link_data(qlk, nxt_socket_conf_t, link); 1050 1051 nxt_router_listen_socket_rpc_create(task, tmcf, skcf); 1052 1053 return; 1054 } 1055 1056 #if (NXT_TLS) 1057 qlk = nxt_queue_last(&tmcf->tls); 1058 1059 if (qlk != nxt_queue_head(&tmcf->tls)) { 1060 nxt_queue_remove(qlk); 1061 1062 tls = nxt_queue_link_data(qlk, nxt_router_tlssock_t, link); 1063 1064 nxt_cert_store_get(task, &tls->name, tmcf->mem_pool, 1065 nxt_router_tls_rpc_handler, tls); 1066 return; 1067 } 1068 #endif 1069 1070 nxt_queue_each(app, &tmcf->apps, nxt_app_t, link) { 1071 1072 if (nxt_router_app_need_start(app)) { 1073 nxt_router_app_rpc_create(task, tmcf, app); 1074 return; 1075 } 1076 1077 } nxt_queue_loop; 1078 1079 rtcf = tmcf->router_conf; 1080 1081 if (rtcf->access_log != NULL && rtcf->access_log->fd == -1) { 1082 nxt_router_access_log_open(task, tmcf); 1083 return; 1084 } 1085 1086 rt = task->thread->runtime; 1087 1088 interface = nxt_service_get(rt->services, "engine", NULL); 1089 1090 router = rtcf->router; 1091 1092 ret = nxt_router_engines_create(task, router, tmcf, interface); 1093 if (nxt_slow_path(ret != NXT_OK)) { 1094 goto fail; 1095 } 1096 1097 ret = nxt_router_threads_create(task, rt, tmcf); 1098 if (nxt_slow_path(ret != NXT_OK)) { 1099 goto fail; 1100 } 1101 1102 nxt_router_apps_sort(task, router, tmcf); 1103 1104 nxt_router_apps_hash_use(task, rtcf, 1); 1105 1106 nxt_router_engines_post(router, tmcf); 1107 1108 nxt_queue_add(&router->sockets, &updating_sockets); 1109 nxt_queue_add(&router->sockets, &creating_sockets); 1110 1111 router->access_log = rtcf->access_log; 1112 1113 nxt_router_conf_ready(task, tmcf); 1114 1115 return; 1116 1117 fail: 1118 1119 nxt_router_conf_error(task, tmcf); 1120 1121 return; 1122 } 1123 1124 1125 static void 1126 nxt_router_conf_wait(nxt_task_t *task, void *obj, void *data) 1127 { 1128 nxt_joint_job_t *job; 1129 1130 job = obj; 1131 1132 nxt_router_conf_ready(task, job->tmcf); 1133 } 1134 1135 1136 static void 1137 nxt_router_conf_ready(nxt_task_t *task, nxt_router_temp_conf_t *tmcf) 1138 { 1139 uint32_t count; 1140 nxt_router_conf_t *rtcf; 1141 nxt_thread_spinlock_t *lock; 1142 1143 nxt_debug(task, "temp conf %p count: %D", tmcf, tmcf->count); 1144 1145 if (--tmcf->count > 0) { 1146 return; 1147 } 1148 1149 nxt_router_conf_send(task, tmcf, NXT_PORT_MSG_RPC_READY_LAST); 1150 1151 rtcf = tmcf->router_conf; 1152 1153 lock = &rtcf->router->lock; 1154 1155 nxt_thread_spin_lock(lock); 1156 1157 count = rtcf->count; 1158 1159 nxt_thread_spin_unlock(lock); 1160 1161 nxt_debug(task, "rtcf %p: %D", rtcf, count); 1162 1163 if (count == 0) { 1164 nxt_router_apps_hash_use(task, rtcf, -1); 1165 1166 nxt_router_access_log_release(task, lock, rtcf->access_log); 1167 1168 nxt_mp_destroy(rtcf->mem_pool); 1169 } 1170 1171 nxt_mp_release(tmcf->mem_pool); 1172 } 1173 1174 1175 static void 1176 nxt_router_conf_error(nxt_task_t *task, nxt_router_temp_conf_t *tmcf) 1177 { 1178 nxt_app_t *app; 1179 nxt_queue_t new_socket_confs; 1180 nxt_socket_t s; 1181 nxt_router_t *router; 1182 nxt_queue_link_t *qlk; 1183 nxt_socket_conf_t *skcf; 1184 nxt_router_conf_t *rtcf; 1185 1186 nxt_alert(task, "failed to apply new conf"); 1187 1188 for (qlk = nxt_queue_first(&creating_sockets); 1189 qlk != nxt_queue_tail(&creating_sockets); 1190 qlk = nxt_queue_next(qlk)) 1191 { 1192 skcf = nxt_queue_link_data(qlk, nxt_socket_conf_t, link); 1193 s = skcf->listen->socket; 1194 1195 if (s != -1) { 1196 nxt_socket_close(task, s); 1197 } 1198 1199 nxt_free(skcf->listen); 1200 } 1201 1202 nxt_queue_init(&new_socket_confs); 1203 nxt_queue_add(&new_socket_confs, &updating_sockets); 1204 nxt_queue_add(&new_socket_confs, &pending_sockets); 1205 nxt_queue_add(&new_socket_confs, &creating_sockets); 1206 1207 rtcf = tmcf->router_conf; 1208 1209 nxt_queue_each(app, &tmcf->apps, nxt_app_t, link) { 1210 1211 nxt_router_app_unlink(task, app); 1212 1213 } nxt_queue_loop; 1214 1215 router = rtcf->router; 1216 1217 nxt_queue_add(&router->sockets, &keeping_sockets); 1218 nxt_queue_add(&router->sockets, &deleting_sockets); 1219 1220 nxt_queue_add(&router->apps, &tmcf->previous); 1221 1222 // TODO: new engines and threads 1223 1224 nxt_router_access_log_release(task, &router->lock, rtcf->access_log); 1225 1226 nxt_mp_destroy(rtcf->mem_pool); 1227 1228 nxt_router_conf_send(task, tmcf, NXT_PORT_MSG_RPC_ERROR); 1229 1230 nxt_mp_release(tmcf->mem_pool); 1231 } 1232 1233 1234 static void 1235 nxt_router_conf_send(nxt_task_t *task, nxt_router_temp_conf_t *tmcf, 1236 nxt_port_msg_type_t type) 1237 { 1238 nxt_port_socket_write(task, tmcf->port, type, -1, tmcf->stream, 0, NULL); 1239 1240 nxt_port_use(task, tmcf->port, -1); 1241 1242 tmcf->port = NULL; 1243 } 1244 1245 1246 static nxt_conf_map_t nxt_router_conf[] = { 1247 { 1248 nxt_string("listeners_threads"), 1249 NXT_CONF_MAP_INT32, 1250 offsetof(nxt_router_conf_t, threads), 1251 }, 1252 }; 1253 1254 1255 static nxt_conf_map_t nxt_router_app_conf[] = { 1256 { 1257 nxt_string("type"), 1258 NXT_CONF_MAP_STR, 1259 offsetof(nxt_router_app_conf_t, type), 1260 }, 1261 1262 { 1263 nxt_string("limits"), 1264 NXT_CONF_MAP_PTR, 1265 offsetof(nxt_router_app_conf_t, limits_value), 1266 }, 1267 1268 { 1269 nxt_string("processes"), 1270 NXT_CONF_MAP_INT32, 1271 offsetof(nxt_router_app_conf_t, processes), 1272 }, 1273 1274 { 1275 nxt_string("processes"), 1276 NXT_CONF_MAP_PTR, 1277 offsetof(nxt_router_app_conf_t, processes_value), 1278 }, 1279 1280 { 1281 nxt_string("targets"), 1282 NXT_CONF_MAP_PTR, 1283 offsetof(nxt_router_app_conf_t, targets_value), 1284 }, 1285 }; 1286 1287 1288 static nxt_conf_map_t nxt_router_app_limits_conf[] = { 1289 { 1290 nxt_string("timeout"), 1291 NXT_CONF_MAP_MSEC, 1292 offsetof(nxt_router_app_conf_t, timeout), 1293 }, 1294 1295 { 1296 nxt_string("requests"), 1297 NXT_CONF_MAP_INT32, 1298 offsetof(nxt_router_app_conf_t, requests), 1299 }, 1300 }; 1301 1302 1303 static nxt_conf_map_t nxt_router_app_processes_conf[] = { 1304 { 1305 nxt_string("spare"), 1306 NXT_CONF_MAP_INT32, 1307 offsetof(nxt_router_app_conf_t, spare_processes), 1308 }, 1309 1310 { 1311 nxt_string("max"), 1312 NXT_CONF_MAP_INT32, 1313 offsetof(nxt_router_app_conf_t, max_processes), 1314 }, 1315 1316 { 1317 nxt_string("idle_timeout"), 1318 NXT_CONF_MAP_MSEC, 1319 offsetof(nxt_router_app_conf_t, idle_timeout), 1320 }, 1321 }; 1322 1323 1324 static nxt_conf_map_t nxt_router_listener_conf[] = { 1325 { 1326 nxt_string("pass"), 1327 NXT_CONF_MAP_STR_COPY, 1328 offsetof(nxt_router_listener_conf_t, pass), 1329 }, 1330 1331 { 1332 nxt_string("application"), 1333 NXT_CONF_MAP_STR_COPY, 1334 offsetof(nxt_router_listener_conf_t, application), 1335 }, 1336 }; 1337 1338 1339 static nxt_conf_map_t nxt_router_http_conf[] = { 1340 { 1341 nxt_string("header_buffer_size"), 1342 NXT_CONF_MAP_SIZE, 1343 offsetof(nxt_socket_conf_t, header_buffer_size), 1344 }, 1345 1346 { 1347 nxt_string("large_header_buffer_size"), 1348 NXT_CONF_MAP_SIZE, 1349 offsetof(nxt_socket_conf_t, large_header_buffer_size), 1350 }, 1351 1352 { 1353 nxt_string("large_header_buffers"), 1354 NXT_CONF_MAP_SIZE, 1355 offsetof(nxt_socket_conf_t, large_header_buffers), 1356 }, 1357 1358 { 1359 nxt_string("body_buffer_size"), 1360 NXT_CONF_MAP_SIZE, 1361 offsetof(nxt_socket_conf_t, body_buffer_size), 1362 }, 1363 1364 { 1365 nxt_string("max_body_size"), 1366 NXT_CONF_MAP_SIZE, 1367 offsetof(nxt_socket_conf_t, max_body_size), 1368 }, 1369 1370 { 1371 nxt_string("idle_timeout"), 1372 NXT_CONF_MAP_MSEC, 1373 offsetof(nxt_socket_conf_t, idle_timeout), 1374 }, 1375 1376 { 1377 nxt_string("header_read_timeout"), 1378 NXT_CONF_MAP_MSEC, 1379 offsetof(nxt_socket_conf_t, header_read_timeout), 1380 }, 1381 1382 { 1383 nxt_string("body_read_timeout"), 1384 NXT_CONF_MAP_MSEC, 1385 offsetof(nxt_socket_conf_t, body_read_timeout), 1386 }, 1387 1388 { 1389 nxt_string("send_timeout"), 1390 NXT_CONF_MAP_MSEC, 1391 offsetof(nxt_socket_conf_t, send_timeout), 1392 }, 1393 1394 { 1395 nxt_string("body_temp_path"), 1396 NXT_CONF_MAP_STR, 1397 offsetof(nxt_socket_conf_t, body_temp_path), 1398 }, 1399 1400 { 1401 nxt_string("discard_unsafe_fields"), 1402 NXT_CONF_MAP_INT8, 1403 offsetof(nxt_socket_conf_t, discard_unsafe_fields), 1404 }, 1405 }; 1406 1407 1408 static nxt_conf_map_t nxt_router_websocket_conf[] = { 1409 { 1410 nxt_string("max_frame_size"), 1411 NXT_CONF_MAP_SIZE, 1412 offsetof(nxt_websocket_conf_t, max_frame_size), 1413 }, 1414 1415 { 1416 nxt_string("read_timeout"), 1417 NXT_CONF_MAP_MSEC, 1418 offsetof(nxt_websocket_conf_t, read_timeout), 1419 }, 1420 1421 { 1422 nxt_string("keepalive_interval"), 1423 NXT_CONF_MAP_MSEC, 1424 offsetof(nxt_websocket_conf_t, keepalive_interval), 1425 }, 1426 1427 }; 1428 1429 1430 static nxt_int_t 1431 nxt_router_conf_create(nxt_task_t *task, nxt_router_temp_conf_t *tmcf, 1432 u_char *start, u_char *end) 1433 { 1434 u_char *p; 1435 size_t size; 1436 nxt_mp_t *mp, *app_mp; 1437 uint32_t next, next_target; 1438 nxt_int_t ret; 1439 nxt_str_t name, path, target; 1440 nxt_app_t *app, *prev; 1441 nxt_str_t *t, *s, *targets; 1442 nxt_uint_t n, i; 1443 nxt_port_t *port; 1444 nxt_router_t *router; 1445 nxt_app_joint_t *app_joint; 1446 #if (NXT_TLS) 1447 nxt_tls_init_t *tls_init; 1448 nxt_conf_value_t *certificate; 1449 #endif 1450 nxt_conf_value_t *conf, *http, *value, *websocket; 1451 nxt_conf_value_t *applications, *application; 1452 nxt_conf_value_t *listeners, *listener; 1453 nxt_conf_value_t *routes_conf, *static_conf; 1454 nxt_socket_conf_t *skcf; 1455 nxt_http_routes_t *routes; 1456 nxt_event_engine_t *engine; 1457 nxt_app_lang_module_t *lang; 1458 nxt_router_app_conf_t apcf; 1459 nxt_router_access_log_t *access_log; 1460 nxt_router_listener_conf_t lscf; 1461 1462 static nxt_str_t http_path = nxt_string("/settings/http"); 1463 static nxt_str_t applications_path = nxt_string("/applications"); 1464 static nxt_str_t listeners_path = nxt_string("/listeners"); 1465 static nxt_str_t routes_path = nxt_string("/routes"); 1466 static nxt_str_t access_log_path = nxt_string("/access_log"); 1467 #if (NXT_TLS) 1468 static nxt_str_t certificate_path = nxt_string("/tls/certificate"); 1469 static nxt_str_t conf_commands_path = nxt_string("/tls/conf_commands"); 1470 static nxt_str_t conf_cache_path = nxt_string("/tls/session/cache_size"); 1471 static nxt_str_t conf_timeout_path = nxt_string("/tls/session/timeout"); 1472 #endif 1473 static nxt_str_t static_path = nxt_string("/settings/http/static"); 1474 static nxt_str_t websocket_path = nxt_string("/settings/http/websocket"); 1475 1476 conf = nxt_conf_json_parse(tmcf->mem_pool, start, end, NULL); 1477 if (conf == NULL) { 1478 nxt_alert(task, "configuration parsing error"); 1479 return NXT_ERROR; 1480 } 1481 1482 mp = tmcf->router_conf->mem_pool; 1483 1484 ret = nxt_conf_map_object(mp, conf, nxt_router_conf, 1485 nxt_nitems(nxt_router_conf), tmcf->router_conf); 1486 if (ret != NXT_OK) { 1487 nxt_alert(task, "root map error"); 1488 return NXT_ERROR; 1489 } 1490 1491 if (tmcf->router_conf->threads == 0) { 1492 tmcf->router_conf->threads = nxt_ncpu; 1493 } 1494 1495 static_conf = nxt_conf_get_path(conf, &static_path); 1496 1497 ret = nxt_router_conf_process_static(task, tmcf->router_conf, static_conf); 1498 if (nxt_slow_path(ret != NXT_OK)) { 1499 return NXT_ERROR; 1500 } 1501 1502 router = tmcf->router_conf->router; 1503 1504 applications = nxt_conf_get_path(conf, &applications_path); 1505 1506 if (applications != NULL) { 1507 next = 0; 1508 1509 for ( ;; ) { 1510 application = nxt_conf_next_object_member(applications, 1511 &name, &next); 1512 if (application == NULL) { 1513 break; 1514 } 1515 1516 nxt_debug(task, "application \"%V\"", &name); 1517 1518 size = nxt_conf_json_length(application, NULL); 1519 1520 app_mp = nxt_mp_create(4096, 128, 1024, 64); 1521 if (nxt_slow_path(app_mp == NULL)) { 1522 goto fail; 1523 } 1524 1525 app = nxt_mp_get(app_mp, sizeof(nxt_app_t) + name.length + size); 1526 if (app == NULL) { 1527 goto app_fail; 1528 } 1529 1530 nxt_memzero(app, sizeof(nxt_app_t)); 1531 1532 app->mem_pool = app_mp; 1533 1534 app->name.start = nxt_pointer_to(app, sizeof(nxt_app_t)); 1535 app->conf.start = nxt_pointer_to(app, sizeof(nxt_app_t) 1536 + name.length); 1537 1538 p = nxt_conf_json_print(app->conf.start, application, NULL); 1539 app->conf.length = p - app->conf.start; 1540 1541 nxt_assert(app->conf.length <= size); 1542 1543 nxt_debug(task, "application conf \"%V\"", &app->conf); 1544 1545 prev = nxt_router_app_find(&router->apps, &name); 1546 1547 if (prev != NULL && nxt_strstr_eq(&app->conf, &prev->conf)) { 1548 nxt_mp_destroy(app_mp); 1549 1550 nxt_queue_remove(&prev->link); 1551 nxt_queue_insert_tail(&tmcf->previous, &prev->link); 1552 1553 ret = nxt_router_apps_hash_add(tmcf->router_conf, prev); 1554 if (nxt_slow_path(ret != NXT_OK)) { 1555 goto fail; 1556 } 1557 1558 continue; 1559 } 1560 1561 apcf.processes = 1; 1562 apcf.max_processes = 1; 1563 apcf.spare_processes = 0; 1564 apcf.timeout = 0; 1565 apcf.idle_timeout = 15000; 1566 apcf.requests = 0; 1567 apcf.limits_value = NULL; 1568 apcf.processes_value = NULL; 1569 apcf.targets_value = NULL; 1570 1571 app_joint = nxt_malloc(sizeof(nxt_app_joint_t)); 1572 if (nxt_slow_path(app_joint == NULL)) { 1573 goto app_fail; 1574 } 1575 1576 nxt_memzero(app_joint, sizeof(nxt_app_joint_t)); 1577 1578 ret = nxt_conf_map_object(mp, application, nxt_router_app_conf, 1579 nxt_nitems(nxt_router_app_conf), &apcf); 1580 if (ret != NXT_OK) { 1581 nxt_alert(task, "application map error"); 1582 goto app_fail; 1583 } 1584 1585 if (apcf.limits_value != NULL) { 1586 1587 if (nxt_conf_type(apcf.limits_value) != NXT_CONF_OBJECT) { 1588 nxt_alert(task, "application limits is not object"); 1589 goto app_fail; 1590 } 1591 1592 ret = nxt_conf_map_object(mp, apcf.limits_value, 1593 nxt_router_app_limits_conf, 1594 nxt_nitems(nxt_router_app_limits_conf), 1595 &apcf); 1596 if (ret != NXT_OK) { 1597 nxt_alert(task, "application limits map error"); 1598 goto app_fail; 1599 } 1600 } 1601 1602 if (apcf.processes_value != NULL 1603 && nxt_conf_type(apcf.processes_value) == NXT_CONF_OBJECT) 1604 { 1605 ret = nxt_conf_map_object(mp, apcf.processes_value, 1606 nxt_router_app_processes_conf, 1607 nxt_nitems(nxt_router_app_processes_conf), 1608 &apcf); 1609 if (ret != NXT_OK) { 1610 nxt_alert(task, "application processes map error"); 1611 goto app_fail; 1612 } 1613 1614 } else { 1615 apcf.max_processes = apcf.processes; 1616 apcf.spare_processes = apcf.processes; 1617 } 1618 1619 if (apcf.targets_value != NULL) { 1620 n = nxt_conf_object_members_count(apcf.targets_value); 1621 1622 targets = nxt_mp_get(app_mp, sizeof(nxt_str_t) * n); 1623 if (nxt_slow_path(targets == NULL)) { 1624 goto app_fail; 1625 } 1626 1627 next_target = 0; 1628 1629 for (i = 0; i < n; i++) { 1630 (void) nxt_conf_next_object_member(apcf.targets_value, 1631 &target, &next_target); 1632 1633 s = nxt_str_dup(app_mp, &targets[i], &target); 1634 if (nxt_slow_path(s == NULL)) { 1635 goto app_fail; 1636 } 1637 } 1638 1639 } else { 1640 targets = NULL; 1641 } 1642 1643 nxt_debug(task, "application type: %V", &apcf.type); 1644 nxt_debug(task, "application processes: %D", apcf.processes); 1645 nxt_debug(task, "application request timeout: %M", apcf.timeout); 1646 nxt_debug(task, "application requests: %D", apcf.requests); 1647 1648 lang = nxt_app_lang_module(task->thread->runtime, &apcf.type); 1649 1650 if (lang == NULL) { 1651 nxt_alert(task, "unknown application type: \"%V\"", &apcf.type); 1652 goto app_fail; 1653 } 1654 1655 nxt_debug(task, "application language module: \"%s\"", lang->file); 1656 1657 ret = nxt_thread_mutex_create(&app->mutex); 1658 if (ret != NXT_OK) { 1659 goto app_fail; 1660 } 1661 1662 nxt_queue_init(&app->ports); 1663 nxt_queue_init(&app->spare_ports); 1664 nxt_queue_init(&app->idle_ports); 1665 nxt_queue_init(&app->ack_waiting_req); 1666 1667 app->name.length = name.length; 1668 nxt_memcpy(app->name.start, name.start, name.length); 1669 1670 app->type = lang->type; 1671 app->max_processes = apcf.max_processes; 1672 app->spare_processes = apcf.spare_processes; 1673 app->max_pending_processes = apcf.spare_processes 1674 ? apcf.spare_processes : 1; 1675 app->timeout = apcf.timeout; 1676 app->idle_timeout = apcf.idle_timeout; 1677 app->max_requests = apcf.requests; 1678 1679 app->targets = targets; 1680 1681 engine = task->thread->engine; 1682 1683 app->engine = engine; 1684 1685 app->adjust_idle_work.handler = nxt_router_adjust_idle_timer; 1686 app->adjust_idle_work.task = &engine->task; 1687 app->adjust_idle_work.obj = app; 1688 1689 nxt_queue_insert_tail(&tmcf->apps, &app->link); 1690 1691 ret = nxt_router_apps_hash_add(tmcf->router_conf, app); 1692 if (nxt_slow_path(ret != NXT_OK)) { 1693 goto app_fail; 1694 } 1695 1696 nxt_router_app_use(task, app, 1); 1697 1698 app->joint = app_joint; 1699 1700 app_joint->use_count = 1; 1701 app_joint->app = app; 1702 1703 app_joint->idle_timer.bias = NXT_TIMER_DEFAULT_BIAS; 1704 app_joint->idle_timer.work_queue = &engine->fast_work_queue; 1705 app_joint->idle_timer.handler = nxt_router_app_idle_timeout; 1706 app_joint->idle_timer.task = &engine->task; 1707 app_joint->idle_timer.log = app_joint->idle_timer.task->log; 1708 1709 app_joint->free_app_work.handler = nxt_router_free_app; 1710 app_joint->free_app_work.task = &engine->task; 1711 app_joint->free_app_work.obj = app_joint; 1712 1713 port = nxt_port_new(task, NXT_SHARED_PORT_ID, nxt_pid, 1714 NXT_PROCESS_APP); 1715 if (nxt_slow_path(port == NULL)) { 1716 return NXT_ERROR; 1717 } 1718 1719 ret = nxt_port_socket_init(task, port, 0); 1720 if (nxt_slow_path(ret != NXT_OK)) { 1721 nxt_port_use(task, port, -1); 1722 return NXT_ERROR; 1723 } 1724 1725 ret = nxt_router_app_queue_init(task, port); 1726 if (nxt_slow_path(ret != NXT_OK)) { 1727 nxt_port_write_close(port); 1728 nxt_port_read_close(port); 1729 nxt_port_use(task, port, -1); 1730 return NXT_ERROR; 1731 } 1732 1733 nxt_port_write_enable(task, port); 1734 port->app = app; 1735 1736 app->shared_port = port; 1737 1738 nxt_thread_mutex_create(&app->outgoing.mutex); 1739 } 1740 } 1741 1742 routes_conf = nxt_conf_get_path(conf, &routes_path); 1743 if (nxt_fast_path(routes_conf != NULL)) { 1744 routes = nxt_http_routes_create(task, tmcf, routes_conf); 1745 if (nxt_slow_path(routes == NULL)) { 1746 return NXT_ERROR; 1747 } 1748 tmcf->router_conf->routes = routes; 1749 } 1750 1751 ret = nxt_upstreams_create(task, tmcf, conf); 1752 if (nxt_slow_path(ret != NXT_OK)) { 1753 return ret; 1754 } 1755 1756 http = nxt_conf_get_path(conf, &http_path); 1757 #if 0 1758 if (http == NULL) { 1759 nxt_alert(task, "no \"http\" block"); 1760 return NXT_ERROR; 1761 } 1762 #endif 1763 1764 websocket = nxt_conf_get_path(conf, &websocket_path); 1765 1766 listeners = nxt_conf_get_path(conf, &listeners_path); 1767 1768 if (listeners != NULL) { 1769 next = 0; 1770 1771 for ( ;; ) { 1772 listener = nxt_conf_next_object_member(listeners, &name, &next); 1773 if (listener == NULL) { 1774 break; 1775 } 1776 1777 skcf = nxt_router_socket_conf(task, tmcf, &name); 1778 if (skcf == NULL) { 1779 goto fail; 1780 } 1781 1782 nxt_memzero(&lscf, sizeof(lscf)); 1783 1784 ret = nxt_conf_map_object(mp, listener, nxt_router_listener_conf, 1785 nxt_nitems(nxt_router_listener_conf), 1786 &lscf); 1787 if (ret != NXT_OK) { 1788 nxt_alert(task, "listener map error"); 1789 goto fail; 1790 } 1791 1792 nxt_debug(task, "application: %V", &lscf.application); 1793 1794 // STUB, default values if http block is not defined. 1795 skcf->header_buffer_size = 2048; 1796 skcf->large_header_buffer_size = 8192; 1797 skcf->large_header_buffers = 4; 1798 skcf->discard_unsafe_fields = 1; 1799 skcf->body_buffer_size = 16 * 1024; 1800 skcf->max_body_size = 8 * 1024 * 1024; 1801 skcf->proxy_header_buffer_size = 64 * 1024; 1802 skcf->proxy_buffer_size = 4096; 1803 skcf->proxy_buffers = 256; 1804 skcf->idle_timeout = 180 * 1000; 1805 skcf->header_read_timeout = 30 * 1000; 1806 skcf->body_read_timeout = 30 * 1000; 1807 skcf->send_timeout = 30 * 1000; 1808 skcf->proxy_timeout = 60 * 1000; 1809 skcf->proxy_send_timeout = 30 * 1000; 1810 skcf->proxy_read_timeout = 30 * 1000; 1811 1812 skcf->websocket_conf.max_frame_size = 1024 * 1024; 1813 skcf->websocket_conf.read_timeout = 60 * 1000; 1814 skcf->websocket_conf.keepalive_interval = 30 * 1000; 1815 1816 nxt_str_null(&skcf->body_temp_path); 1817 1818 if (http != NULL) { 1819 ret = nxt_conf_map_object(mp, http, nxt_router_http_conf, 1820 nxt_nitems(nxt_router_http_conf), 1821 skcf); 1822 if (ret != NXT_OK) { 1823 nxt_alert(task, "http map error"); 1824 goto fail; 1825 } 1826 } 1827 1828 if (websocket != NULL) { 1829 ret = nxt_conf_map_object(mp, websocket, 1830 nxt_router_websocket_conf, 1831 nxt_nitems(nxt_router_websocket_conf), 1832 &skcf->websocket_conf); 1833 if (ret != NXT_OK) { 1834 nxt_alert(task, "websocket map error"); 1835 goto fail; 1836 } 1837 } 1838 1839 t = &skcf->body_temp_path; 1840 1841 if (t->length == 0) { 1842 t->start = (u_char *) task->thread->runtime->tmp; 1843 t->length = nxt_strlen(t->start); 1844 } 1845 1846 #if (NXT_TLS) 1847 certificate = nxt_conf_get_path(listener, &certificate_path); 1848 1849 if (certificate != NULL) { 1850 tls_init = nxt_mp_get(tmcf->mem_pool, sizeof(nxt_tls_init_t)); 1851 if (nxt_slow_path(tls_init == NULL)) { 1852 return NXT_ERROR; 1853 } 1854 1855 tls_init->cache_size = 0; 1856 tls_init->timeout = 300; 1857 1858 value = nxt_conf_get_path(listener, &conf_cache_path); 1859 if (value != NULL) { 1860 tls_init->cache_size = nxt_conf_get_number(value); 1861 } 1862 1863 value = nxt_conf_get_path(listener, &conf_timeout_path); 1864 if (value != NULL) { 1865 tls_init->timeout = nxt_conf_get_number(value); 1866 } 1867 1868 tls_init->conf_cmds = nxt_conf_get_path(listener, 1869 &conf_commands_path); 1870 1871 if (nxt_conf_type(certificate) == NXT_CONF_ARRAY) { 1872 n = nxt_conf_array_elements_count(certificate); 1873 1874 for (i = 0; i < n; i++) { 1875 value = nxt_conf_get_array_element(certificate, i); 1876 1877 nxt_assert(value != NULL); 1878 1879 ret = nxt_router_conf_tls_insert(tmcf, value, skcf, 1880 tls_init, i == 0); 1881 if (nxt_slow_path(ret != NXT_OK)) { 1882 goto fail; 1883 } 1884 } 1885 1886 } else { 1887 /* NXT_CONF_STRING */ 1888 ret = nxt_router_conf_tls_insert(tmcf, certificate, skcf, 1889 tls_init, 1); 1890 if (nxt_slow_path(ret != NXT_OK)) { 1891 goto fail; 1892 } 1893 } 1894 } 1895 #endif 1896 1897 skcf->listen->handler = nxt_http_conn_init; 1898 skcf->router_conf = tmcf->router_conf; 1899 skcf->router_conf->count++; 1900 1901 if (lscf.pass.length != 0) { 1902 skcf->action = nxt_http_action_create(task, tmcf, &lscf.pass); 1903 1904 /* COMPATIBILITY: listener application. */ 1905 } else if (lscf.application.length > 0) { 1906 skcf->action = nxt_http_pass_application(task, 1907 tmcf->router_conf, 1908 &lscf.application); 1909 } 1910 1911 if (nxt_slow_path(skcf->action == NULL)) { 1912 goto fail; 1913 } 1914 } 1915 } 1916 1917 ret = nxt_http_routes_resolve(task, tmcf); 1918 if (nxt_slow_path(ret != NXT_OK)) { 1919 goto fail; 1920 } 1921 1922 value = nxt_conf_get_path(conf, &access_log_path); 1923 1924 if (value != NULL) { 1925 nxt_conf_get_string(value, &path); 1926 1927 access_log = router->access_log; 1928 1929 if (access_log != NULL && nxt_strstr_eq(&path, &access_log->path)) { 1930 nxt_thread_spin_lock(&router->lock); 1931 access_log->count++; 1932 nxt_thread_spin_unlock(&router->lock); 1933 1934 } else { 1935 access_log = nxt_malloc(sizeof(nxt_router_access_log_t) 1936 + path.length); 1937 if (access_log == NULL) { 1938 nxt_alert(task, "failed to allocate access log structure"); 1939 goto fail; 1940 } 1941 1942 access_log->fd = -1; 1943 access_log->handler = &nxt_router_access_log_writer; 1944 access_log->count = 1; 1945 1946 access_log->path.length = path.length; 1947 access_log->path.start = (u_char *) access_log 1948 + sizeof(nxt_router_access_log_t); 1949 1950 nxt_memcpy(access_log->path.start, path.start, path.length); 1951 } 1952 1953 tmcf->router_conf->access_log = access_log; 1954 } 1955 1956 nxt_queue_add(&deleting_sockets, &router->sockets); 1957 nxt_queue_init(&router->sockets); 1958 1959 return NXT_OK; 1960 1961 app_fail: 1962 1963 nxt_mp_destroy(app_mp); 1964 1965 fail: 1966 1967 nxt_queue_each(app, &tmcf->apps, nxt_app_t, link) { 1968 1969 nxt_queue_remove(&app->link); 1970 nxt_thread_mutex_destroy(&app->mutex); 1971 nxt_mp_destroy(app->mem_pool); 1972 1973 } nxt_queue_loop; 1974 1975 return NXT_ERROR; 1976 } 1977 1978 1979 #if (NXT_TLS) 1980 1981 static nxt_int_t 1982 nxt_router_conf_tls_insert(nxt_router_temp_conf_t *tmcf, 1983 nxt_conf_value_t *value, nxt_socket_conf_t *skcf, 1984 nxt_tls_init_t *tls_init, nxt_bool_t last) 1985 { 1986 nxt_router_tlssock_t *tls; 1987 1988 tls = nxt_mp_get(tmcf->mem_pool, sizeof(nxt_router_tlssock_t)); 1989 if (nxt_slow_path(tls == NULL)) { 1990 return NXT_ERROR; 1991 } 1992 1993 tls->tls_init = tls_init; 1994 tls->socket_conf = skcf; 1995 tls->temp_conf = tmcf; 1996 tls->last = last; 1997 nxt_conf_get_string(value, &tls->name); 1998 1999 nxt_queue_insert_tail(&tmcf->tls, &tls->link); 2000 2001 return NXT_OK; 2002 } 2003 2004 #endif 2005 2006 2007 static nxt_int_t 2008 nxt_router_conf_process_static(nxt_task_t *task, nxt_router_conf_t *rtcf, 2009 nxt_conf_value_t *conf) 2010 { 2011 uint32_t next, i; 2012 nxt_mp_t *mp; 2013 nxt_str_t *type, exten, str; 2014 nxt_int_t ret; 2015 nxt_uint_t exts; 2016 nxt_conf_value_t *mtypes_conf, *ext_conf, *value; 2017 2018 static nxt_str_t mtypes_path = nxt_string("/mime_types"); 2019 2020 mp = rtcf->mem_pool; 2021 2022 ret = nxt_http_static_mtypes_init(mp, &rtcf->mtypes_hash); 2023 if (nxt_slow_path(ret != NXT_OK)) { 2024 return NXT_ERROR; 2025 } 2026 2027 if (conf == NULL) { 2028 return NXT_OK; 2029 } 2030 2031 mtypes_conf = nxt_conf_get_path(conf, &mtypes_path); 2032 2033 if (mtypes_conf != NULL) { 2034 next = 0; 2035 2036 for ( ;; ) { 2037 ext_conf = nxt_conf_next_object_member(mtypes_conf, &str, &next); 2038 2039 if (ext_conf == NULL) { 2040 break; 2041 } 2042 2043 type = nxt_str_dup(mp, NULL, &str); 2044 if (nxt_slow_path(type == NULL)) { 2045 return NXT_ERROR; 2046 } 2047 2048 if (nxt_conf_type(ext_conf) == NXT_CONF_STRING) { 2049 nxt_conf_get_string(ext_conf, &str); 2050 2051 if (nxt_slow_path(nxt_str_dup(mp, &exten, &str) == NULL)) { 2052 return NXT_ERROR; 2053 } 2054 2055 ret = nxt_http_static_mtypes_hash_add(mp, &rtcf->mtypes_hash, 2056 &exten, type); 2057 if (nxt_slow_path(ret != NXT_OK)) { 2058 return NXT_ERROR; 2059 } 2060 2061 continue; 2062 } 2063 2064 exts = nxt_conf_array_elements_count(ext_conf); 2065 2066 for (i = 0; i < exts; i++) { 2067 value = nxt_conf_get_array_element(ext_conf, i); 2068 2069 nxt_conf_get_string(value, &str); 2070 2071 if (nxt_slow_path(nxt_str_dup(mp, &exten, &str) == NULL)) { 2072 return NXT_ERROR; 2073 } 2074 2075 ret = nxt_http_static_mtypes_hash_add(mp, &rtcf->mtypes_hash, 2076 &exten, type); 2077 if (nxt_slow_path(ret != NXT_OK)) { 2078 return NXT_ERROR; 2079 } 2080 } 2081 } 2082 } 2083 2084 return NXT_OK; 2085 } 2086 2087 2088 static nxt_app_t * 2089 nxt_router_app_find(nxt_queue_t *queue, nxt_str_t *name) 2090 { 2091 nxt_app_t *app; 2092 2093 nxt_queue_each(app, queue, nxt_app_t, link) { 2094 2095 if (nxt_strstr_eq(name, &app->name)) { 2096 return app; 2097 } 2098 2099 } nxt_queue_loop; 2100 2101 return NULL; 2102 } 2103 2104 2105 static nxt_int_t 2106 nxt_router_app_queue_init(nxt_task_t *task, nxt_port_t *port) 2107 { 2108 void *mem; 2109 nxt_int_t fd; 2110 2111 fd = nxt_shm_open(task, sizeof(nxt_app_queue_t)); 2112 if (nxt_slow_path(fd == -1)) { 2113 return NXT_ERROR; 2114 } 2115 2116 mem = nxt_mem_mmap(NULL, sizeof(nxt_app_queue_t), 2117 PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); 2118 if (nxt_slow_path(mem == MAP_FAILED)) { 2119 nxt_fd_close(fd); 2120 2121 return NXT_ERROR; 2122 } 2123 2124 nxt_app_queue_init(mem); 2125 2126 port->queue_fd = fd; 2127 port->queue = mem; 2128 2129 return NXT_OK; 2130 } 2131 2132 2133 static nxt_int_t 2134 nxt_router_port_queue_init(nxt_task_t *task, nxt_port_t *port) 2135 { 2136 void *mem; 2137 nxt_int_t fd; 2138 2139 fd = nxt_shm_open(task, sizeof(nxt_port_queue_t)); 2140 if (nxt_slow_path(fd == -1)) { 2141 return NXT_ERROR; 2142 } 2143 2144 mem = nxt_mem_mmap(NULL, sizeof(nxt_port_queue_t), 2145 PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); 2146 if (nxt_slow_path(mem == MAP_FAILED)) { 2147 nxt_fd_close(fd); 2148 2149 return NXT_ERROR; 2150 } 2151 2152 nxt_port_queue_init(mem); 2153 2154 port->queue_fd = fd; 2155 port->queue = mem; 2156 2157 return NXT_OK; 2158 } 2159 2160 2161 static nxt_int_t 2162 nxt_router_port_queue_map(nxt_task_t *task, nxt_port_t *port, nxt_fd_t fd) 2163 { 2164 void *mem; 2165 2166 nxt_assert(fd != -1); 2167 2168 mem = nxt_mem_mmap(NULL, sizeof(nxt_port_queue_t), 2169 PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); 2170 if (nxt_slow_path(mem == MAP_FAILED)) { 2171 2172 return NXT_ERROR; 2173 } 2174 2175 port->queue = mem; 2176 2177 return NXT_OK; 2178 } 2179 2180 2181 static const nxt_lvlhsh_proto_t nxt_router_apps_hash_proto nxt_aligned(64) = { 2182 NXT_LVLHSH_DEFAULT, 2183 nxt_router_apps_hash_test, 2184 nxt_mp_lvlhsh_alloc, 2185 nxt_mp_lvlhsh_free, 2186 }; 2187 2188 2189 static nxt_int_t 2190 nxt_router_apps_hash_test(nxt_lvlhsh_query_t *lhq, void *data) 2191 { 2192 nxt_app_t *app; 2193 2194 app = data; 2195 2196 return nxt_strstr_eq(&lhq->key, &app->name) ? NXT_OK : NXT_DECLINED; 2197 } 2198 2199 2200 static nxt_int_t 2201 nxt_router_apps_hash_add(nxt_router_conf_t *rtcf, nxt_app_t *app) 2202 { 2203 nxt_lvlhsh_query_t lhq; 2204 2205 lhq.key_hash = nxt_djb_hash(app->name.start, app->name.length); 2206 lhq.replace = 0; 2207 lhq.key = app->name; 2208 lhq.value = app; 2209 lhq.proto = &nxt_router_apps_hash_proto; 2210 lhq.pool = rtcf->mem_pool; 2211 2212 switch (nxt_lvlhsh_insert(&rtcf->apps_hash, &lhq)) { 2213 2214 case NXT_OK: 2215 return NXT_OK; 2216 2217 case NXT_DECLINED: 2218 nxt_thread_log_alert("router app hash adding failed: " 2219 "\"%V\" is already in hash", &lhq.key); 2220 /* Fall through. */ 2221 default: 2222 return NXT_ERROR; 2223 } 2224 } 2225 2226 2227 static nxt_app_t * 2228 nxt_router_apps_hash_get(nxt_router_conf_t *rtcf, nxt_str_t *name) 2229 { 2230 nxt_lvlhsh_query_t lhq; 2231 2232 lhq.key_hash = nxt_djb_hash(name->start, name->length); 2233 lhq.key = *name; 2234 lhq.proto = &nxt_router_apps_hash_proto; 2235 2236 if (nxt_lvlhsh_find(&rtcf->apps_hash, &lhq) != NXT_OK) { 2237 return NULL; 2238 } 2239 2240 return lhq.value; 2241 } 2242 2243 2244 static void 2245 nxt_router_apps_hash_use(nxt_task_t *task, nxt_router_conf_t *rtcf, int i) 2246 { 2247 nxt_app_t *app; 2248 nxt_lvlhsh_each_t lhe; 2249 2250 nxt_lvlhsh_each_init(&lhe, &nxt_router_apps_hash_proto); 2251 2252 for ( ;; ) { 2253 app = nxt_lvlhsh_each(&rtcf->apps_hash, &lhe); 2254 2255 if (app == NULL) { 2256 break; 2257 } 2258 2259 nxt_router_app_use(task, app, i); 2260 } 2261 } 2262 2263 2264 typedef struct { 2265 nxt_app_t *app; 2266 nxt_int_t target; 2267 } nxt_http_app_conf_t; 2268 2269 2270 nxt_int_t 2271 nxt_router_application_init(nxt_router_conf_t *rtcf, nxt_str_t *name, 2272 nxt_str_t *target, nxt_http_action_t *action) 2273 { 2274 nxt_app_t *app; 2275 nxt_str_t *targets; 2276 nxt_uint_t i; 2277 nxt_http_app_conf_t *conf; 2278 2279 app = nxt_router_apps_hash_get(rtcf, name); 2280 if (app == NULL) { 2281 return NXT_DECLINED; 2282 } 2283 2284 conf = nxt_mp_get(rtcf->mem_pool, sizeof(nxt_http_app_conf_t)); 2285 if (nxt_slow_path(conf == NULL)) { 2286 return NXT_ERROR; 2287 } 2288 2289 action->handler = nxt_http_application_handler; 2290 action->u.conf = conf; 2291 2292 conf->app = app; 2293 2294 if (target != NULL && target->length != 0) { 2295 targets = app->targets; 2296 2297 for (i = 0; !nxt_strstr_eq(target, &targets[i]); i++); 2298 2299 conf->target = i; 2300 2301 } else { 2302 conf->target = 0; 2303 } 2304 2305 return NXT_OK; 2306 } 2307 2308 2309 static nxt_socket_conf_t * 2310 nxt_router_socket_conf(nxt_task_t *task, nxt_router_temp_conf_t *tmcf, 2311 nxt_str_t *name) 2312 { 2313 size_t size; 2314 nxt_int_t ret; 2315 nxt_bool_t wildcard; 2316 nxt_sockaddr_t *sa; 2317 nxt_socket_conf_t *skcf; 2318 nxt_listen_socket_t *ls; 2319 2320 sa = nxt_sockaddr_parse(tmcf->mem_pool, name); 2321 if (nxt_slow_path(sa == NULL)) { 2322 nxt_alert(task, "invalid listener \"%V\"", name); 2323 return NULL; 2324 } 2325 2326 sa->type = SOCK_STREAM; 2327 2328 nxt_debug(task, "router listener: \"%*s\"", 2329 (size_t) sa->length, nxt_sockaddr_start(sa)); 2330 2331 skcf = nxt_mp_zget(tmcf->router_conf->mem_pool, sizeof(nxt_socket_conf_t)); 2332 if (nxt_slow_path(skcf == NULL)) { 2333 return NULL; 2334 } 2335 2336 size = nxt_sockaddr_size(sa); 2337 2338 ret = nxt_router_listen_socket_find(tmcf, skcf, sa); 2339 2340 if (ret != NXT_OK) { 2341 2342 ls = nxt_zalloc(sizeof(nxt_listen_socket_t) + size); 2343 if (nxt_slow_path(ls == NULL)) { 2344 return NULL; 2345 } 2346 2347 skcf->listen = ls; 2348 2349 ls->sockaddr = nxt_pointer_to(ls, sizeof(nxt_listen_socket_t)); 2350 nxt_memcpy(ls->sockaddr, sa, size); 2351 2352 nxt_listen_socket_remote_size(ls); 2353 2354 ls->socket = -1; 2355 ls->backlog = NXT_LISTEN_BACKLOG; 2356 ls->flags = NXT_NONBLOCK; 2357 ls->read_after_accept = 1; 2358 } 2359 2360 switch (sa->u.sockaddr.sa_family) { 2361 #if (NXT_HAVE_UNIX_DOMAIN) 2362 case AF_UNIX: 2363 wildcard = 0; 2364 break; 2365 #endif 2366 #if (NXT_INET6) 2367 case AF_INET6: 2368 wildcard = IN6_IS_ADDR_UNSPECIFIED(&sa->u.sockaddr_in6.sin6_addr); 2369 break; 2370 #endif 2371 case AF_INET: 2372 default: 2373 wildcard = (sa->u.sockaddr_in.sin_addr.s_addr == INADDR_ANY); 2374 break; 2375 } 2376 2377 if (!wildcard) { 2378 skcf->sockaddr = nxt_mp_zget(tmcf->router_conf->mem_pool, size); 2379 if (nxt_slow_path(skcf->sockaddr == NULL)) { 2380 return NULL; 2381 } 2382 2383 nxt_memcpy(skcf->sockaddr, sa, size); 2384 } 2385 2386 return skcf; 2387 } 2388 2389 2390 static nxt_int_t 2391 nxt_router_listen_socket_find(nxt_router_temp_conf_t *tmcf, 2392 nxt_socket_conf_t *nskcf, nxt_sockaddr_t *sa) 2393 { 2394 nxt_router_t *router; 2395 nxt_queue_link_t *qlk; 2396 nxt_socket_conf_t *skcf; 2397 2398 router = tmcf->router_conf->router; 2399 2400 for (qlk = nxt_queue_first(&router->sockets); 2401 qlk != nxt_queue_tail(&router->sockets); 2402 qlk = nxt_queue_next(qlk)) 2403 { 2404 skcf = nxt_queue_link_data(qlk, nxt_socket_conf_t, link); 2405 2406 if (nxt_sockaddr_cmp(skcf->listen->sockaddr, sa)) { 2407 nskcf->listen = skcf->listen; 2408 2409 nxt_queue_remove(qlk); 2410 nxt_queue_insert_tail(&keeping_sockets, qlk); 2411 2412 nxt_queue_insert_tail(&updating_sockets, &nskcf->link); 2413 2414 return NXT_OK; 2415 } 2416 } 2417 2418 nxt_queue_insert_tail(&pending_sockets, &nskcf->link); 2419 2420 return NXT_DECLINED; 2421 } 2422 2423 2424 static void 2425 nxt_router_listen_socket_rpc_create(nxt_task_t *task, 2426 nxt_router_temp_conf_t *tmcf, nxt_socket_conf_t *skcf) 2427 { 2428 size_t size; 2429 uint32_t stream; 2430 nxt_int_t ret; 2431 nxt_buf_t *b; 2432 nxt_port_t *main_port, *router_port; 2433 nxt_runtime_t *rt; 2434 nxt_socket_rpc_t *rpc; 2435 2436 rpc = nxt_mp_alloc(tmcf->mem_pool, sizeof(nxt_socket_rpc_t)); 2437 if (rpc == NULL) { 2438 goto fail; 2439 } 2440 2441 rpc->socket_conf = skcf; 2442 rpc->temp_conf = tmcf; 2443 2444 size = nxt_sockaddr_size(skcf->listen->sockaddr); 2445 2446 b = nxt_buf_mem_alloc(tmcf->mem_pool, size, 0); 2447 if (b == NULL) { 2448 goto fail; 2449 } 2450 2451 b->completion_handler = nxt_router_dummy_buf_completion; 2452 2453 b->mem.free = nxt_cpymem(b->mem.free, skcf->listen->sockaddr, size); 2454 2455 rt = task->thread->runtime; 2456 main_port = rt->port_by_type[NXT_PROCESS_MAIN]; 2457 router_port = rt->port_by_type[NXT_PROCESS_ROUTER]; 2458 2459 stream = nxt_port_rpc_register_handler(task, router_port, 2460 nxt_router_listen_socket_ready, 2461 nxt_router_listen_socket_error, 2462 main_port->pid, rpc); 2463 if (nxt_slow_path(stream == 0)) { 2464 goto fail; 2465 } 2466 2467 ret = nxt_port_socket_write(task, main_port, NXT_PORT_MSG_SOCKET, -1, 2468 stream, router_port->id, b); 2469 2470 if (nxt_slow_path(ret != NXT_OK)) { 2471 nxt_port_rpc_cancel(task, router_port, stream); 2472 goto fail; 2473 } 2474 2475 return; 2476 2477 fail: 2478 2479 nxt_router_conf_error(task, tmcf); 2480 } 2481 2482 2483 static void 2484 nxt_router_listen_socket_ready(nxt_task_t *task, nxt_port_recv_msg_t *msg, 2485 void *data) 2486 { 2487 nxt_int_t ret; 2488 nxt_socket_t s; 2489 nxt_socket_rpc_t *rpc; 2490 2491 rpc = data; 2492 2493 s = msg->fd[0]; 2494 2495 ret = nxt_socket_nonblocking(task, s); 2496 if (nxt_slow_path(ret != NXT_OK)) { 2497 goto fail; 2498 } 2499 2500 nxt_socket_defer_accept(task, s, rpc->socket_conf->listen->sockaddr); 2501 2502 ret = nxt_listen_socket(task, s, NXT_LISTEN_BACKLOG); 2503 if (nxt_slow_path(ret != NXT_OK)) { 2504 goto fail; 2505 } 2506 2507 rpc->socket_conf->listen->socket = s; 2508 2509 nxt_work_queue_add(&task->thread->engine->fast_work_queue, 2510 nxt_router_conf_apply, task, rpc->temp_conf, NULL); 2511 2512 return; 2513 2514 fail: 2515 2516 nxt_socket_close(task, s); 2517 2518 nxt_router_conf_error(task, rpc->temp_conf); 2519 } 2520 2521 2522 static void 2523 nxt_router_listen_socket_error(nxt_task_t *task, nxt_port_recv_msg_t *msg, 2524 void *data) 2525 { 2526 nxt_socket_rpc_t *rpc; 2527 nxt_router_temp_conf_t *tmcf; 2528 2529 rpc = data; 2530 tmcf = rpc->temp_conf; 2531 2532 #if 0 2533 u_char *p; 2534 size_t size; 2535 uint8_t error; 2536 nxt_buf_t *in, *out; 2537 nxt_sockaddr_t *sa; 2538 2539 static nxt_str_t socket_errors[] = { 2540 nxt_string("ListenerSystem"), 2541 nxt_string("ListenerNoIPv6"), 2542 nxt_string("ListenerPort"), 2543 nxt_string("ListenerInUse"), 2544 nxt_string("ListenerNoAddress"), 2545 nxt_string("ListenerNoAccess"), 2546 nxt_string("ListenerPath"), 2547 }; 2548 2549 sa = rpc->socket_conf->listen->sockaddr; 2550 2551 in = nxt_buf_chk_make_plain(tmcf->mem_pool, msg->buf, msg->size); 2552 2553 if (nxt_slow_path(in == NULL)) { 2554 return; 2555 } 2556 2557 p = in->mem.pos; 2558 2559 error = *p++; 2560 2561 size = nxt_length("listen socket error: ") 2562 + nxt_length("{listener: \"\", code:\"\", message: \"\"}") 2563 + sa->length + socket_errors[error].length + (in->mem.free - p); 2564 2565 out = nxt_buf_mem_alloc(tmcf->mem_pool, size, 0); 2566 if (nxt_slow_path(out == NULL)) { 2567 return; 2568 } 2569 2570 out->mem.free = nxt_sprintf(out->mem.free, out->mem.end, 2571 "listen socket error: " 2572 "{listener: \"%*s\", code:\"%V\", message: \"%*s\"}", 2573 (size_t) sa->length, nxt_sockaddr_start(sa), 2574 &socket_errors[error], in->mem.free - p, p); 2575 2576 nxt_debug(task, "%*s", out->mem.free - out->mem.pos, out->mem.pos); 2577 #endif 2578 2579 nxt_router_conf_error(task, tmcf); 2580 } 2581 2582 2583 #if (NXT_TLS) 2584 2585 static void 2586 nxt_router_tls_rpc_handler(nxt_task_t *task, nxt_port_recv_msg_t *msg, 2587 void *data) 2588 { 2589 nxt_mp_t *mp; 2590 nxt_int_t ret; 2591 nxt_tls_conf_t *tlscf; 2592 nxt_router_tlssock_t *tls; 2593 nxt_tls_bundle_conf_t *bundle; 2594 nxt_router_temp_conf_t *tmcf; 2595 2596 nxt_debug(task, "tls rpc handler"); 2597 2598 tls = data; 2599 tmcf = tls->temp_conf; 2600 2601 if (msg == NULL || msg->port_msg.type == _NXT_PORT_MSG_RPC_ERROR) { 2602 goto fail; 2603 } 2604 2605 mp = tmcf->router_conf->mem_pool; 2606 2607 if (tls->socket_conf->tls == NULL){ 2608 tlscf = nxt_mp_zget(mp, sizeof(nxt_tls_conf_t)); 2609 if (nxt_slow_path(tlscf == NULL)) { 2610 goto fail; 2611 } 2612 2613 tlscf->no_wait_shutdown = 1; 2614 tls->socket_conf->tls = tlscf; 2615 2616 } else { 2617 tlscf = tls->socket_conf->tls; 2618 } 2619 2620 tls->tls_init->conf = tlscf; 2621 2622 bundle = nxt_mp_get(mp, sizeof(nxt_tls_bundle_conf_t)); 2623 if (nxt_slow_path(bundle == NULL)) { 2624 goto fail; 2625 } 2626 2627 if (nxt_slow_path(nxt_str_dup(mp, &bundle->name, &tls->name) == NULL)) { 2628 goto fail; 2629 } 2630 2631 bundle->chain_file = msg->fd[0]; 2632 bundle->next = tlscf->bundle; 2633 tlscf->bundle = bundle; 2634 2635 ret = task->thread->runtime->tls->server_init(task, mp, tls->tls_init, 2636 tls->last); 2637 if (nxt_slow_path(ret != NXT_OK)) { 2638 goto fail; 2639 } 2640 2641 nxt_work_queue_add(&task->thread->engine->fast_work_queue, 2642 nxt_router_conf_apply, task, tmcf, NULL); 2643 return; 2644 2645 fail: 2646 2647 nxt_router_conf_error(task, tmcf); 2648 } 2649 2650 #endif 2651 2652 2653 static void 2654 nxt_router_app_rpc_create(nxt_task_t *task, 2655 nxt_router_temp_conf_t *tmcf, nxt_app_t *app) 2656 { 2657 size_t size; 2658 uint32_t stream; 2659 nxt_int_t ret; 2660 nxt_buf_t *b; 2661 nxt_port_t *main_port, *router_port; 2662 nxt_runtime_t *rt; 2663 nxt_app_rpc_t *rpc; 2664 2665 rpc = nxt_mp_alloc(tmcf->mem_pool, sizeof(nxt_app_rpc_t)); 2666 if (rpc == NULL) { 2667 goto fail; 2668 } 2669 2670 rpc->app = app; 2671 rpc->temp_conf = tmcf; 2672 2673 nxt_debug(task, "app '%V' prefork", &app->name); 2674 2675 size = app->name.length + 1 + app->conf.length; 2676 2677 b = nxt_buf_mem_alloc(tmcf->mem_pool, size, 0); 2678 if (nxt_slow_path(b == NULL)) { 2679 goto fail; 2680 } 2681 2682 b->completion_handler = nxt_router_dummy_buf_completion; 2683 2684 nxt_buf_cpystr(b, &app->name); 2685 *b->mem.free++ = '\0'; 2686 nxt_buf_cpystr(b, &app->conf); 2687 2688 rt = task->thread->runtime; 2689 main_port = rt->port_by_type[NXT_PROCESS_MAIN]; 2690 router_port = rt->port_by_type[NXT_PROCESS_ROUTER]; 2691 2692 stream = nxt_port_rpc_register_handler(task, router_port, 2693 nxt_router_app_prefork_ready, 2694 nxt_router_app_prefork_error, 2695 -1, rpc); 2696 if (nxt_slow_path(stream == 0)) { 2697 goto fail; 2698 } 2699 2700 ret = nxt_port_socket_write(task, main_port, NXT_PORT_MSG_START_PROCESS, 2701 -1, stream, router_port->id, b); 2702 2703 if (nxt_slow_path(ret != NXT_OK)) { 2704 nxt_port_rpc_cancel(task, router_port, stream); 2705 goto fail; 2706 } 2707 2708 app->pending_processes++; 2709 2710 return; 2711 2712 fail: 2713 2714 nxt_router_conf_error(task, tmcf); 2715 } 2716 2717 2718 static void 2719 nxt_router_app_prefork_ready(nxt_task_t *task, nxt_port_recv_msg_t *msg, 2720 void *data) 2721 { 2722 nxt_app_t *app; 2723 nxt_port_t *port; 2724 nxt_app_rpc_t *rpc; 2725 nxt_event_engine_t *engine; 2726 2727 rpc = data; 2728 app = rpc->app; 2729 2730 port = msg->u.new_port; 2731 2732 nxt_assert(port != NULL); 2733 nxt_assert(port->type == NXT_PROCESS_APP); 2734 nxt_assert(port->id == 0); 2735 2736 port->app = app; 2737 port->main_app_port = port; 2738 2739 app->pending_processes--; 2740 app->processes++; 2741 app->idle_processes++; 2742 2743 engine = task->thread->engine; 2744 2745 nxt_queue_insert_tail(&app->ports, &port->app_link); 2746 nxt_queue_insert_tail(&app->spare_ports, &port->idle_link); 2747 2748 nxt_debug(task, "app '%V' move new port %PI:%d to spare_ports", 2749 &app->name, port->pid, port->id); 2750 2751 nxt_port_hash_add(&app->port_hash, port); 2752 app->port_hash_count++; 2753 2754 port->idle_start = 0; 2755 2756 nxt_port_inc_use(port); 2757 2758 nxt_router_app_shared_port_send(task, port); 2759 2760 nxt_work_queue_add(&engine->fast_work_queue, 2761 nxt_router_conf_apply, task, rpc->temp_conf, NULL); 2762 } 2763 2764 2765 static void 2766 nxt_router_app_prefork_error(nxt_task_t *task, nxt_port_recv_msg_t *msg, 2767 void *data) 2768 { 2769 nxt_app_t *app; 2770 nxt_app_rpc_t *rpc; 2771 nxt_router_temp_conf_t *tmcf; 2772 2773 rpc = data; 2774 app = rpc->app; 2775 tmcf = rpc->temp_conf; 2776 2777 nxt_log(task, NXT_LOG_WARN, "failed to start application \"%V\"", 2778 &app->name); 2779 2780 app->pending_processes--; 2781 2782 nxt_router_conf_error(task, tmcf); 2783 } 2784 2785 2786 static nxt_int_t 2787 nxt_router_engines_create(nxt_task_t *task, nxt_router_t *router, 2788 nxt_router_temp_conf_t *tmcf, const nxt_event_interface_t *interface) 2789 { 2790 nxt_int_t ret; 2791 nxt_uint_t n, threads; 2792 nxt_queue_link_t *qlk; 2793 nxt_router_engine_conf_t *recf; 2794 2795 threads = tmcf->router_conf->threads; 2796 2797 tmcf->engines = nxt_array_create(tmcf->mem_pool, threads, 2798 sizeof(nxt_router_engine_conf_t)); 2799 if (nxt_slow_path(tmcf->engines == NULL)) { 2800 return NXT_ERROR; 2801 } 2802 2803 n = 0; 2804 2805 for (qlk = nxt_queue_first(&router->engines); 2806 qlk != nxt_queue_tail(&router->engines); 2807 qlk = nxt_queue_next(qlk)) 2808 { 2809 recf = nxt_array_zero_add(tmcf->engines); 2810 if (nxt_slow_path(recf == NULL)) { 2811 return NXT_ERROR; 2812 } 2813 2814 recf->engine = nxt_queue_link_data(qlk, nxt_event_engine_t, link0); 2815 2816 if (n < threads) { 2817 recf->action = NXT_ROUTER_ENGINE_KEEP; 2818 ret = nxt_router_engine_conf_update(tmcf, recf); 2819 2820 } else { 2821 recf->action = NXT_ROUTER_ENGINE_DELETE; 2822 ret = nxt_router_engine_conf_delete(tmcf, recf); 2823 } 2824 2825 if (nxt_slow_path(ret != NXT_OK)) { 2826 return ret; 2827 } 2828 2829 n++; 2830 } 2831 2832 tmcf->new_threads = n; 2833 2834 while (n < threads) { 2835 recf = nxt_array_zero_add(tmcf->engines); 2836 if (nxt_slow_path(recf == NULL)) { 2837 return NXT_ERROR; 2838 } 2839 2840 recf->action = NXT_ROUTER_ENGINE_ADD; 2841 2842 recf->engine = nxt_event_engine_create(task, interface, NULL, 0, 0); 2843 if (nxt_slow_path(recf->engine == NULL)) { 2844 return NXT_ERROR; 2845 } 2846 2847 ret = nxt_router_engine_conf_create(tmcf, recf); 2848 if (nxt_slow_path(ret != NXT_OK)) { 2849 return ret; 2850 } 2851 2852 n++; 2853 } 2854 2855 return NXT_OK; 2856 } 2857 2858 2859 static nxt_int_t 2860 nxt_router_engine_conf_create(nxt_router_temp_conf_t *tmcf, 2861 nxt_router_engine_conf_t *recf) 2862 { 2863 nxt_int_t ret; 2864 2865 ret = nxt_router_engine_joints_create(tmcf, recf, &creating_sockets, 2866 nxt_router_listen_socket_create); 2867 if (nxt_slow_path(ret != NXT_OK)) { 2868 return ret; 2869 } 2870 2871 ret = nxt_router_engine_joints_create(tmcf, recf, &updating_sockets, 2872 nxt_router_listen_socket_create); 2873 if (nxt_slow_path(ret != NXT_OK)) { 2874 return ret; 2875 } 2876 2877 return ret; 2878 } 2879 2880 2881 static nxt_int_t 2882 nxt_router_engine_conf_update(nxt_router_temp_conf_t *tmcf, 2883 nxt_router_engine_conf_t *recf) 2884 { 2885 nxt_int_t ret; 2886 2887 ret = nxt_router_engine_joints_create(tmcf, recf, &creating_sockets, 2888 nxt_router_listen_socket_create); 2889 if (nxt_slow_path(ret != NXT_OK)) { 2890 return ret; 2891 } 2892 2893 ret = nxt_router_engine_joints_create(tmcf, recf, &updating_sockets, 2894 nxt_router_listen_socket_update); 2895 if (nxt_slow_path(ret != NXT_OK)) { 2896 return ret; 2897 } 2898 2899 ret = nxt_router_engine_joints_delete(tmcf, recf, &deleting_sockets); 2900 if (nxt_slow_path(ret != NXT_OK)) { 2901 return ret; 2902 } 2903 2904 return ret; 2905 } 2906 2907 2908 static nxt_int_t 2909 nxt_router_engine_conf_delete(nxt_router_temp_conf_t *tmcf, 2910 nxt_router_engine_conf_t *recf) 2911 { 2912 nxt_int_t ret; 2913 2914 ret = nxt_router_engine_quit(tmcf, recf); 2915 if (nxt_slow_path(ret != NXT_OK)) { 2916 return ret; 2917 } 2918 2919 ret = nxt_router_engine_joints_delete(tmcf, recf, &updating_sockets); 2920 if (nxt_slow_path(ret != NXT_OK)) { 2921 return ret; 2922 } 2923 2924 return nxt_router_engine_joints_delete(tmcf, recf, &deleting_sockets); 2925 } 2926 2927 2928 static nxt_int_t 2929 nxt_router_engine_joints_create(nxt_router_temp_conf_t *tmcf, 2930 nxt_router_engine_conf_t *recf, nxt_queue_t *sockets, 2931 nxt_work_handler_t handler) 2932 { 2933 nxt_int_t ret; 2934 nxt_joint_job_t *job; 2935 nxt_queue_link_t *qlk; 2936 nxt_socket_conf_t *skcf; 2937 nxt_socket_conf_joint_t *joint; 2938 2939 for (qlk = nxt_queue_first(sockets); 2940 qlk != nxt_queue_tail(sockets); 2941 qlk = nxt_queue_next(qlk)) 2942 { 2943 job = nxt_mp_get(tmcf->mem_pool, sizeof(nxt_joint_job_t)); 2944 if (nxt_slow_path(job == NULL)) { 2945 return NXT_ERROR; 2946 } 2947 2948 job->work.next = recf->jobs; 2949 recf->jobs = &job->work; 2950 2951 job->task = tmcf->engine->task; 2952 job->work.handler = handler; 2953 job->work.task = &job->task; 2954 job->work.obj = job; 2955 job->tmcf = tmcf; 2956 2957 tmcf->count++; 2958 2959 joint = nxt_mp_alloc(tmcf->router_conf->mem_pool, 2960 sizeof(nxt_socket_conf_joint_t)); 2961 if (nxt_slow_path(joint == NULL)) { 2962 return NXT_ERROR; 2963 } 2964 2965 job->work.data = joint; 2966 2967 ret = nxt_upstreams_joint_create(tmcf, &joint->upstreams); 2968 if (nxt_slow_path(ret != NXT_OK)) { 2969 return ret; 2970 } 2971 2972 joint->count = 1; 2973 2974 skcf = nxt_queue_link_data(qlk, nxt_socket_conf_t, link); 2975 skcf->count++; 2976 joint->socket_conf = skcf; 2977 2978 joint->engine = recf->engine; 2979 } 2980 2981 return NXT_OK; 2982 } 2983 2984 2985 static nxt_int_t 2986 nxt_router_engine_quit(nxt_router_temp_conf_t *tmcf, 2987 nxt_router_engine_conf_t *recf) 2988 { 2989 nxt_joint_job_t *job; 2990 2991 job = nxt_mp_get(tmcf->mem_pool, sizeof(nxt_joint_job_t)); 2992 if (nxt_slow_path(job == NULL)) { 2993 return NXT_ERROR; 2994 } 2995 2996 job->work.next = recf->jobs; 2997 recf->jobs = &job->work; 2998 2999 job->task = tmcf->engine->task; 3000 job->work.handler = nxt_router_worker_thread_quit; 3001 job->work.task = &job->task; 3002 job->work.obj = NULL; 3003 job->work.data = NULL; 3004 job->tmcf = NULL; 3005 3006 return NXT_OK; 3007 } 3008 3009 3010 static nxt_int_t 3011 nxt_router_engine_joints_delete(nxt_router_temp_conf_t *tmcf, 3012 nxt_router_engine_conf_t *recf, nxt_queue_t *sockets) 3013 { 3014 nxt_joint_job_t *job; 3015 nxt_queue_link_t *qlk; 3016 3017 for (qlk = nxt_queue_first(sockets); 3018 qlk != nxt_queue_tail(sockets); 3019 qlk = nxt_queue_next(qlk)) 3020 { 3021 job = nxt_mp_get(tmcf->mem_pool, sizeof(nxt_joint_job_t)); 3022 if (nxt_slow_path(job == NULL)) { 3023 return NXT_ERROR; 3024 } 3025 3026 job->work.next = recf->jobs; 3027 recf->jobs = &job->work; 3028 3029 job->task = tmcf->engine->task; 3030 job->work.handler = nxt_router_listen_socket_delete; 3031 job->work.task = &job->task; 3032 job->work.obj = job; 3033 job->work.data = nxt_queue_link_data(qlk, nxt_socket_conf_t, link); 3034 job->tmcf = tmcf; 3035 3036 tmcf->count++; 3037 } 3038 3039 return NXT_OK; 3040 } 3041 3042 3043 static nxt_int_t 3044 nxt_router_threads_create(nxt_task_t *task, nxt_runtime_t *rt, 3045 nxt_router_temp_conf_t *tmcf) 3046 { 3047 nxt_int_t ret; 3048 nxt_uint_t i, threads; 3049 nxt_router_engine_conf_t *recf; 3050 3051 recf = tmcf->engines->elts; 3052 threads = tmcf->router_conf->threads; 3053 3054 for (i = tmcf->new_threads; i < threads; i++) { 3055 ret = nxt_router_thread_create(task, rt, recf[i].engine); 3056 if (nxt_slow_path(ret != NXT_OK)) { 3057 return ret; 3058 } 3059 } 3060 3061 return NXT_OK; 3062 } 3063 3064 3065 static nxt_int_t 3066 nxt_router_thread_create(nxt_task_t *task, nxt_runtime_t *rt, 3067 nxt_event_engine_t *engine) 3068 { 3069 nxt_int_t ret; 3070 nxt_thread_link_t *link; 3071 nxt_thread_handle_t handle; 3072 3073 link = nxt_zalloc(sizeof(nxt_thread_link_t)); 3074 3075 if (nxt_slow_path(link == NULL)) { 3076 return NXT_ERROR; 3077 } 3078 3079 link->start = nxt_router_thread_start; 3080 link->engine = engine; 3081 link->work.handler = nxt_router_thread_exit_handler; 3082 link->work.task = task; 3083 link->work.data = link; 3084 3085 nxt_queue_insert_tail(&rt->engines, &engine->link); 3086 3087 ret = nxt_thread_create(&handle, link); 3088 3089 if (nxt_slow_path(ret != NXT_OK)) { 3090 nxt_queue_remove(&engine->link); 3091 } 3092 3093 return ret; 3094 } 3095 3096 3097 static void 3098 nxt_router_apps_sort(nxt_task_t *task, nxt_router_t *router, 3099 nxt_router_temp_conf_t *tmcf) 3100 { 3101 nxt_app_t *app; 3102 3103 nxt_queue_each(app, &router->apps, nxt_app_t, link) { 3104 3105 nxt_router_app_unlink(task, app); 3106 3107 } nxt_queue_loop; 3108 3109 nxt_queue_add(&router->apps, &tmcf->previous); 3110 nxt_queue_add(&router->apps, &tmcf->apps); 3111 } 3112 3113 3114 static void 3115 nxt_router_engines_post(nxt_router_t *router, nxt_router_temp_conf_t *tmcf) 3116 { 3117 nxt_uint_t n; 3118 nxt_event_engine_t *engine; 3119 nxt_router_engine_conf_t *recf; 3120 3121 recf = tmcf->engines->elts; 3122 3123 for (n = tmcf->engines->nelts; n != 0; n--) { 3124 engine = recf->engine; 3125 3126 switch (recf->action) { 3127 3128 case NXT_ROUTER_ENGINE_KEEP: 3129 break; 3130 3131 case NXT_ROUTER_ENGINE_ADD: 3132 nxt_queue_insert_tail(&router->engines, &engine->link0); 3133 break; 3134 3135 case NXT_ROUTER_ENGINE_DELETE: 3136 nxt_queue_remove(&engine->link0); 3137 break; 3138 } 3139 3140 nxt_router_engine_post(engine, recf->jobs); 3141 3142 recf++; 3143 } 3144 } 3145 3146 3147 static void 3148 nxt_router_engine_post(nxt_event_engine_t *engine, nxt_work_t *jobs) 3149 { 3150 nxt_work_t *work, *next; 3151 3152 for (work = jobs; work != NULL; work = next) { 3153 next = work->next; 3154 work->next = NULL; 3155 3156 nxt_event_engine_post(engine, work); 3157 } 3158 } 3159 3160 3161 static nxt_port_handlers_t nxt_router_app_port_handlers = { 3162 .rpc_error = nxt_port_rpc_handler, 3163 .mmap = nxt_port_mmap_handler, 3164 .data = nxt_port_rpc_handler, 3165 .oosm = nxt_router_oosm_handler, 3166 .req_headers_ack = nxt_port_rpc_handler, 3167 }; 3168 3169 3170 static void 3171 nxt_router_thread_start(void *data) 3172 { 3173 nxt_int_t ret; 3174 nxt_port_t *port; 3175 nxt_task_t *task; 3176 nxt_work_t *work; 3177 nxt_thread_t *thread; 3178 nxt_thread_link_t *link; 3179 nxt_event_engine_t *engine; 3180 3181 link = data; 3182 engine = link->engine; 3183 task = &engine->task; 3184 3185 thread = nxt_thread(); 3186 3187 nxt_event_engine_thread_adopt(engine); 3188 3189 /* STUB */ 3190 thread->runtime = engine->task.thread->runtime; 3191 3192 engine->task.thread = thread; 3193 engine->task.log = thread->log; 3194 thread->engine = engine; 3195 thread->task = &engine->task; 3196 #if 0 3197 thread->fiber = &engine->fibers->fiber; 3198 #endif 3199 3200 engine->mem_pool = nxt_mp_create(4096, 128, 1024, 64); 3201 if (nxt_slow_path(engine->mem_pool == NULL)) { 3202 return; 3203 } 3204 3205 port = nxt_port_new(task, nxt_port_get_next_id(), nxt_pid, 3206 NXT_PROCESS_ROUTER); 3207 if (nxt_slow_path(port == NULL)) { 3208 return; 3209 } 3210 3211 ret = nxt_port_socket_init(task, port, 0); 3212 if (nxt_slow_path(ret != NXT_OK)) { 3213 nxt_port_use(task, port, -1); 3214 return; 3215 } 3216 3217 ret = nxt_router_port_queue_init(task, port); 3218 if (nxt_slow_path(ret != NXT_OK)) { 3219 nxt_port_use(task, port, -1); 3220 return; 3221 } 3222 3223 engine->port = port; 3224 3225 nxt_port_enable(task, port, &nxt_router_app_port_handlers); 3226 3227 work = nxt_zalloc(sizeof(nxt_work_t)); 3228 if (nxt_slow_path(work == NULL)) { 3229 return; 3230 } 3231 3232 work->handler = nxt_router_rt_add_port; 3233 work->task = link->work.task; 3234 work->obj = work; 3235 work->data = port; 3236 3237 nxt_event_engine_post(link->work.task->thread->engine, work); 3238 3239 nxt_event_engine_start(engine); 3240 } 3241 3242 3243 static void 3244 nxt_router_rt_add_port(nxt_task_t *task, void *obj, void *data) 3245 { 3246 nxt_int_t res; 3247 nxt_port_t *port; 3248 nxt_runtime_t *rt; 3249 3250 rt = task->thread->runtime; 3251 port = data; 3252 3253 nxt_free(obj); 3254 3255 res = nxt_port_hash_add(&rt->ports, port); 3256 3257 if (nxt_fast_path(res == NXT_OK)) { 3258 nxt_port_use(task, port, 1); 3259 } 3260 } 3261 3262 3263 static void 3264 nxt_router_listen_socket_create(nxt_task_t *task, void *obj, void *data) 3265 { 3266 nxt_joint_job_t *job; 3267 nxt_socket_conf_t *skcf; 3268 nxt_listen_event_t *lev; 3269 nxt_listen_socket_t *ls; 3270 nxt_thread_spinlock_t *lock; 3271 nxt_socket_conf_joint_t *joint; 3272 3273 job = obj; 3274 joint = data; 3275 3276 nxt_queue_insert_tail(&task->thread->engine->joints, &joint->link); 3277 3278 skcf = joint->socket_conf; 3279 ls = skcf->listen; 3280 3281 lev = nxt_listen_event(task, ls); 3282 if (nxt_slow_path(lev == NULL)) { 3283 nxt_router_listen_socket_release(task, skcf); 3284 return; 3285 } 3286 3287 lev->socket.data = joint; 3288 3289 lock = &skcf->router_conf->router->lock; 3290 3291 nxt_thread_spin_lock(lock); 3292 ls->count++; 3293 nxt_thread_spin_unlock(lock); 3294 3295 job->work.next = NULL; 3296 job->work.handler = nxt_router_conf_wait; 3297 3298 nxt_event_engine_post(job->tmcf->engine, &job->work); 3299 } 3300 3301 3302 nxt_inline nxt_listen_event_t * 3303 nxt_router_listen_event(nxt_queue_t *listen_connections, 3304 nxt_socket_conf_t *skcf) 3305 { 3306 nxt_socket_t fd; 3307 nxt_queue_link_t *qlk; 3308 nxt_listen_event_t *lev; 3309 3310 fd = skcf->listen->socket; 3311 3312 for (qlk = nxt_queue_first(listen_connections); 3313 qlk != nxt_queue_tail(listen_connections); 3314 qlk = nxt_queue_next(qlk)) 3315 { 3316 lev = nxt_queue_link_data(qlk, nxt_listen_event_t, link); 3317 3318 if (fd == lev->socket.fd) { 3319 return lev; 3320 } 3321 } 3322 3323 return NULL; 3324 } 3325 3326 3327 static void 3328 nxt_router_listen_socket_update(nxt_task_t *task, void *obj, void *data) 3329 { 3330 nxt_joint_job_t *job; 3331 nxt_event_engine_t *engine; 3332 nxt_listen_event_t *lev; 3333 nxt_socket_conf_joint_t *joint, *old; 3334 3335 job = obj; 3336 joint = data; 3337 3338 engine = task->thread->engine; 3339 3340 nxt_queue_insert_tail(&engine->joints, &joint->link); 3341 3342 lev = nxt_router_listen_event(&engine->listen_connections, 3343 joint->socket_conf); 3344 3345 old = lev->socket.data; 3346 lev->socket.data = joint; 3347 lev->listen = joint->socket_conf->listen; 3348 3349 job->work.next = NULL; 3350 job->work.handler = nxt_router_conf_wait; 3351 3352 nxt_event_engine_post(job->tmcf->engine, &job->work); 3353 3354 /* 3355 * The task is allocated from configuration temporary 3356 * memory pool so it can be freed after engine post operation. 3357 */ 3358 3359 nxt_router_conf_release(&engine->task, old); 3360 } 3361 3362 3363 static void 3364 nxt_router_listen_socket_delete(nxt_task_t *task, void *obj, void *data) 3365 { 3366 nxt_socket_conf_t *skcf; 3367 nxt_listen_event_t *lev; 3368 nxt_event_engine_t *engine; 3369 nxt_socket_conf_joint_t *joint; 3370 3371 skcf = data; 3372 3373 engine = task->thread->engine; 3374 3375 lev = nxt_router_listen_event(&engine->listen_connections, skcf); 3376 3377 nxt_fd_event_delete(engine, &lev->socket); 3378 3379 nxt_debug(task, "engine %p: listen socket delete: %d", engine, 3380 lev->socket.fd); 3381 3382 joint = lev->socket.data; 3383 joint->close_job = obj; 3384 3385 lev->timer.handler = nxt_router_listen_socket_close; 3386 lev->timer.work_queue = &engine->fast_work_queue; 3387 3388 nxt_timer_add(engine, &lev->timer, 0); 3389 } 3390 3391 3392 static void 3393 nxt_router_worker_thread_quit(nxt_task_t *task, void *obj, void *data) 3394 { 3395 nxt_event_engine_t *engine; 3396 3397 nxt_debug(task, "router worker thread quit"); 3398 3399 engine = task->thread->engine; 3400 3401 engine->shutdown = 1; 3402 3403 if (nxt_queue_is_empty(&engine->joints)) { 3404 nxt_thread_exit(task->thread); 3405 } 3406 } 3407 3408 3409 static void 3410 nxt_router_listen_socket_close(nxt_task_t *task, void *obj, void *data) 3411 { 3412 nxt_timer_t *timer; 3413 nxt_joint_job_t *job; 3414 nxt_listen_event_t *lev; 3415 nxt_socket_conf_joint_t *joint; 3416 3417 timer = obj; 3418 lev = nxt_timer_data(timer, nxt_listen_event_t, timer); 3419 3420 nxt_debug(task, "engine %p: listen socket close: %d", task->thread->engine, 3421 lev->socket.fd); 3422 3423 nxt_queue_remove(&lev->link); 3424 3425 joint = lev->socket.data; 3426 lev->socket.data = NULL; 3427 3428 /* 'task' refers to lev->task and we cannot use after nxt_free() */ 3429 task = &task->thread->engine->task; 3430 3431 nxt_router_listen_socket_release(task, joint->socket_conf); 3432 3433 job = joint->close_job; 3434 job->work.next = NULL; 3435 job->work.handler = nxt_router_conf_wait; 3436 3437 nxt_event_engine_post(job->tmcf->engine, &job->work); 3438 3439 nxt_router_listen_event_release(task, lev, joint); 3440 } 3441 3442 3443 static void 3444 nxt_router_listen_socket_release(nxt_task_t *task, nxt_socket_conf_t *skcf) 3445 { 3446 nxt_listen_socket_t *ls; 3447 nxt_thread_spinlock_t *lock; 3448 3449 ls = skcf->listen; 3450 lock = &skcf->router_conf->router->lock; 3451 3452 nxt_thread_spin_lock(lock); 3453 3454 nxt_debug(task, "engine %p: listen socket release: ls->count %D", 3455 task->thread->engine, ls->count); 3456 3457 if (--ls->count != 0) { 3458 ls = NULL; 3459 } 3460 3461 nxt_thread_spin_unlock(lock); 3462 3463 if (ls != NULL) { 3464 nxt_socket_close(task, ls->socket); 3465 nxt_free(ls); 3466 } 3467 } 3468 3469 3470 void 3471 nxt_router_listen_event_release(nxt_task_t *task, nxt_listen_event_t *lev, 3472 nxt_socket_conf_joint_t *joint) 3473 { 3474 nxt_event_engine_t *engine; 3475 3476 nxt_debug(task, "listen event count: %D", lev->count); 3477 3478 engine = task->thread->engine; 3479 3480 if (--lev->count == 0) { 3481 if (lev->next != NULL) { 3482 nxt_sockaddr_cache_free(engine, lev->next); 3483 3484 nxt_conn_free(task, lev->next); 3485 } 3486 3487 nxt_free(lev); 3488 } 3489 3490 if (joint != NULL) { 3491 nxt_router_conf_release(task, joint); 3492 } 3493 3494 if (engine->shutdown && nxt_queue_is_empty(&engine->joints)) { 3495 nxt_thread_exit(task->thread); 3496 } 3497 } 3498 3499 3500 void 3501 nxt_router_conf_release(nxt_task_t *task, nxt_socket_conf_joint_t *joint) 3502 { 3503 nxt_socket_conf_t *skcf; 3504 nxt_router_conf_t *rtcf; 3505 nxt_thread_spinlock_t *lock; 3506 3507 nxt_debug(task, "conf joint %p count: %D", joint, joint->count); 3508 3509 if (--joint->count != 0) { 3510 return; 3511 } 3512 3513 nxt_queue_remove(&joint->link); 3514 3515 /* 3516 * The joint content can not be safely used after the critical 3517 * section protected by the spinlock because its memory pool may 3518 * be already destroyed by another thread. 3519 */ 3520 skcf = joint->socket_conf; 3521 rtcf = skcf->router_conf; 3522 lock = &rtcf->router->lock; 3523 3524 nxt_thread_spin_lock(lock); 3525 3526 nxt_debug(task, "conf skcf %p: %D, rtcf %p: %D", skcf, skcf->count, 3527 rtcf, rtcf->count); 3528 3529 if (--skcf->count != 0) { 3530 skcf = NULL; 3531 rtcf = NULL; 3532 3533 } else { 3534 nxt_queue_remove(&skcf->link); 3535 3536 if (--rtcf->count != 0) { 3537 rtcf = NULL; 3538 } 3539 } 3540 3541 nxt_thread_spin_unlock(lock); 3542 3543 #if (NXT_TLS) 3544 if (skcf != NULL && skcf->tls != NULL) { 3545 task->thread->runtime->tls->server_free(task, skcf->tls); 3546 } 3547 #endif 3548 3549 /* TODO remove engine->port */ 3550 3551 if (rtcf != NULL) { 3552 nxt_debug(task, "old router conf is destroyed"); 3553 3554 nxt_router_apps_hash_use(task, rtcf, -1); 3555 3556 nxt_router_access_log_release(task, lock, rtcf->access_log); 3557 3558 nxt_mp_thread_adopt(rtcf->mem_pool); 3559 3560 nxt_mp_destroy(rtcf->mem_pool); 3561 } 3562 } 3563 3564 3565 static void 3566 nxt_router_access_log_writer(nxt_task_t *task, nxt_http_request_t *r, 3567 nxt_router_access_log_t *access_log) 3568 { 3569 size_t size; 3570 u_char *buf, *p; 3571 nxt_off_t bytes; 3572 3573 static nxt_time_string_t date_cache = { 3574 (nxt_atomic_uint_t) -1, 3575 nxt_router_access_log_date, 3576 "%02d/%s/%4d:%02d:%02d:%02d %c%02d%02d", 3577 nxt_length("31/Dec/1986:19:40:00 +0300"), 3578 NXT_THREAD_TIME_LOCAL, 3579 NXT_THREAD_TIME_SEC, 3580 }; 3581 3582 size = r->remote->address_length 3583 + 6 /* ' - - [' */ 3584 + date_cache.size 3585 + 3 /* '] "' */ 3586 + r->method->length 3587 + 1 /* space */ 3588 + r->target.length 3589 + 1 /* space */ 3590 + r->version.length 3591 + 2 /* '" ' */ 3592 + 3 /* status */ 3593 + 1 /* space */ 3594 + NXT_OFF_T_LEN 3595 + 2 /* ' "' */ 3596 + (r->referer != NULL ? r->referer->value_length : 1) 3597 + 3 /* '" "' */ 3598 + (r->user_agent != NULL ? r->user_agent->value_length : 1) 3599 + 2 /* '"\n' */ 3600 ; 3601 3602 buf = nxt_mp_nget(r->mem_pool, size); 3603 if (nxt_slow_path(buf == NULL)) { 3604 return; 3605 } 3606 3607 p = nxt_cpymem(buf, nxt_sockaddr_address(r->remote), 3608 r->remote->address_length); 3609 3610 p = nxt_cpymem(p, " - - [", 6); 3611 3612 p = nxt_thread_time_string(task->thread, &date_cache, p); 3613 3614 p = nxt_cpymem(p, "] \"", 3); 3615 3616 if (r->method->length != 0) { 3617 p = nxt_cpymem(p, r->method->start, r->method->length); 3618 3619 if (r->target.length != 0) { 3620 *p++ = ' '; 3621 p = nxt_cpymem(p, r->target.start, r->target.length); 3622 3623 if (r->version.length != 0) { 3624 *p++ = ' '; 3625 p = nxt_cpymem(p, r->version.start, r->version.length); 3626 } 3627 } 3628 3629 } else { 3630 *p++ = '-'; 3631 } 3632 3633 p = nxt_cpymem(p, "\" ", 2); 3634 3635 p = nxt_sprintf(p, p + 3, "%03d", r->status); 3636 3637 *p++ = ' '; 3638 3639 bytes = nxt_http_proto[r->protocol].body_bytes_sent(task, r->proto); 3640 3641 p = nxt_sprintf(p, p + NXT_OFF_T_LEN, "%O", bytes); 3642 3643 p = nxt_cpymem(p, " \"", 2); 3644 3645 if (r->referer != NULL) { 3646 p = nxt_cpymem(p, r->referer->value, r->referer->value_length); 3647 3648 } else { 3649 *p++ = '-'; 3650 } 3651 3652 p = nxt_cpymem(p, "\" \"", 3); 3653 3654 if (r->user_agent != NULL) { 3655 p = nxt_cpymem(p, r->user_agent->value, r->user_agent->value_length); 3656 3657 } else { 3658 *p++ = '-'; 3659 } 3660 3661 p = nxt_cpymem(p, "\"\n", 2); 3662 3663 nxt_fd_write(access_log->fd, buf, p - buf); 3664 } 3665 3666 3667 static u_char * 3668 nxt_router_access_log_date(u_char *buf, nxt_realtime_t *now, struct tm *tm, 3669 size_t size, const char *format) 3670 { 3671 u_char sign; 3672 time_t gmtoff; 3673 3674 static const char *month[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", 3675 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" }; 3676 3677 gmtoff = nxt_timezone(tm) / 60; 3678 3679 if (gmtoff < 0) { 3680 gmtoff = -gmtoff; 3681 sign = '-'; 3682 3683 } else { 3684 sign = '+'; 3685 } 3686 3687 return nxt_sprintf(buf, buf + size, format, 3688 tm->tm_mday, month[tm->tm_mon], tm->tm_year + 1900, 3689 tm->tm_hour, tm->tm_min, tm->tm_sec, 3690 sign, gmtoff / 60, gmtoff % 60); 3691 } 3692 3693 3694 static void 3695 nxt_router_access_log_open(nxt_task_t *task, nxt_router_temp_conf_t *tmcf) 3696 { 3697 uint32_t stream; 3698 nxt_int_t ret; 3699 nxt_buf_t *b; 3700 nxt_port_t *main_port, *router_port; 3701 nxt_runtime_t *rt; 3702 nxt_router_access_log_t *access_log; 3703 3704 access_log = tmcf->router_conf->access_log; 3705 3706 b = nxt_buf_mem_alloc(tmcf->mem_pool, access_log->path.length + 1, 0); 3707 if (nxt_slow_path(b == NULL)) { 3708 goto fail; 3709 } 3710 3711 b->completion_handler = nxt_router_dummy_buf_completion; 3712 3713 nxt_buf_cpystr(b, &access_log->path); 3714 *b->mem.free++ = '\0'; 3715 3716 rt = task->thread->runtime; 3717 main_port = rt->port_by_type[NXT_PROCESS_MAIN]; 3718 router_port = rt->port_by_type[NXT_PROCESS_ROUTER]; 3719 3720 stream = nxt_port_rpc_register_handler(task, router_port, 3721 nxt_router_access_log_ready, 3722 nxt_router_access_log_error, 3723 -1, tmcf); 3724 if (nxt_slow_path(stream == 0)) { 3725 goto fail; 3726 } 3727 3728 ret = nxt_port_socket_write(task, main_port, NXT_PORT_MSG_ACCESS_LOG, -1, 3729 stream, router_port->id, b); 3730 3731 if (nxt_slow_path(ret != NXT_OK)) { 3732 nxt_port_rpc_cancel(task, router_port, stream); 3733 goto fail; 3734 } 3735 3736 return; 3737 3738 fail: 3739 3740 nxt_router_conf_error(task, tmcf); 3741 } 3742 3743 3744 static void 3745 nxt_router_access_log_ready(nxt_task_t *task, nxt_port_recv_msg_t *msg, 3746 void *data) 3747 { 3748 nxt_router_temp_conf_t *tmcf; 3749 nxt_router_access_log_t *access_log; 3750 3751 tmcf = data; 3752 3753 access_log = tmcf->router_conf->access_log; 3754 3755 access_log->fd = msg->fd[0]; 3756 3757 nxt_work_queue_add(&task->thread->engine->fast_work_queue, 3758 nxt_router_conf_apply, task, tmcf, NULL); 3759 } 3760 3761 3762 static void 3763 nxt_router_access_log_error(nxt_task_t *task, nxt_port_recv_msg_t *msg, 3764 void *data) 3765 { 3766 nxt_router_temp_conf_t *tmcf; 3767 3768 tmcf = data; 3769 3770 nxt_router_conf_error(task, tmcf); 3771 } 3772 3773 3774 static void 3775 nxt_router_access_log_release(nxt_task_t *task, nxt_thread_spinlock_t *lock, 3776 nxt_router_access_log_t *access_log) 3777 { 3778 if (access_log == NULL) { 3779 return; 3780 } 3781 3782 nxt_thread_spin_lock(lock); 3783 3784 if (--access_log->count != 0) { 3785 access_log = NULL; 3786 } 3787 3788 nxt_thread_spin_unlock(lock); 3789 3790 if (access_log != NULL) { 3791 3792 if (access_log->fd != -1) { 3793 nxt_fd_close(access_log->fd); 3794 } 3795 3796 nxt_free(access_log); 3797 } 3798 } 3799 3800 3801 typedef struct { 3802 nxt_mp_t *mem_pool; 3803 nxt_router_access_log_t *access_log; 3804 } nxt_router_access_log_reopen_t; 3805 3806 3807 static void 3808 nxt_router_access_log_reopen_handler(nxt_task_t *task, nxt_port_recv_msg_t *msg) 3809 { 3810 nxt_mp_t *mp; 3811 uint32_t stream; 3812 nxt_int_t ret; 3813 nxt_buf_t *b; 3814 nxt_port_t *main_port, *router_port; 3815 nxt_runtime_t *rt; 3816 nxt_router_access_log_t *access_log; 3817 nxt_router_access_log_reopen_t *reopen; 3818 3819 access_log = nxt_router->access_log; 3820 3821 if (access_log == NULL) { 3822 return; 3823 } 3824 3825 mp = nxt_mp_create(1024, 128, 256, 32); 3826 if (nxt_slow_path(mp == NULL)) { 3827 return; 3828 } 3829 3830 reopen = nxt_mp_get(mp, sizeof(nxt_router_access_log_reopen_t)); 3831 if (nxt_slow_path(reopen == NULL)) { 3832 goto fail; 3833 } 3834 3835 reopen->mem_pool = mp; 3836 reopen->access_log = access_log; 3837 3838 b = nxt_buf_mem_alloc(mp, access_log->path.length + 1, 0); 3839 if (nxt_slow_path(b == NULL)) { 3840 goto fail; 3841 } 3842 3843 b->completion_handler = nxt_router_access_log_reopen_completion; 3844 3845 nxt_buf_cpystr(b, &access_log->path); 3846 *b->mem.free++ = '\0'; 3847 3848 rt = task->thread->runtime; 3849 main_port = rt->port_by_type[NXT_PROCESS_MAIN]; 3850 router_port = rt->port_by_type[NXT_PROCESS_ROUTER]; 3851 3852 stream = nxt_port_rpc_register_handler(task, router_port, 3853 nxt_router_access_log_reopen_ready, 3854 nxt_router_access_log_reopen_error, 3855 -1, reopen); 3856 if (nxt_slow_path(stream == 0)) { 3857 goto fail; 3858 } 3859 3860 ret = nxt_port_socket_write(task, main_port, NXT_PORT_MSG_ACCESS_LOG, -1, 3861 stream, router_port->id, b); 3862 3863 if (nxt_slow_path(ret != NXT_OK)) { 3864 nxt_port_rpc_cancel(task, router_port, stream); 3865 goto fail; 3866 } 3867 3868 nxt_mp_retain(mp); 3869 3870 return; 3871 3872 fail: 3873 3874 nxt_mp_destroy(mp); 3875 } 3876 3877 3878 static void 3879 nxt_router_access_log_reopen_completion(nxt_task_t *task, void *obj, void *data) 3880 { 3881 nxt_mp_t *mp; 3882 nxt_buf_t *b; 3883 3884 b = obj; 3885 mp = b->data; 3886 3887 nxt_mp_release(mp); 3888 } 3889 3890 3891 static void 3892 nxt_router_access_log_reopen_ready(nxt_task_t *task, nxt_port_recv_msg_t *msg, 3893 void *data) 3894 { 3895 nxt_router_access_log_t *access_log; 3896 nxt_router_access_log_reopen_t *reopen; 3897 3898 reopen = data; 3899 3900 access_log = reopen->access_log; 3901 3902 if (access_log == nxt_router->access_log) { 3903 3904 if (nxt_slow_path(dup2(msg->fd[0], access_log->fd) == -1)) { 3905 nxt_alert(task, "dup2(%FD, %FD) failed %E", 3906 msg->fd[0], access_log->fd, nxt_errno); 3907 } 3908 } 3909 3910 nxt_fd_close(msg->fd[0]); 3911 nxt_mp_release(reopen->mem_pool); 3912 } 3913 3914 3915 static void 3916 nxt_router_access_log_reopen_error(nxt_task_t *task, nxt_port_recv_msg_t *msg, 3917 void *data) 3918 { 3919 nxt_router_access_log_reopen_t *reopen; 3920 3921 reopen = data; 3922 3923 nxt_mp_release(reopen->mem_pool); 3924 } 3925 3926 3927 static void 3928 nxt_router_thread_exit_handler(nxt_task_t *task, void *obj, void *data) 3929 { 3930 nxt_port_t *port; 3931 nxt_thread_link_t *link; 3932 nxt_event_engine_t *engine; 3933 nxt_thread_handle_t handle; 3934 3935 handle = (nxt_thread_handle_t) (uintptr_t) obj; 3936 link = data; 3937 3938 nxt_thread_wait(handle); 3939 3940 engine = link->engine; 3941 3942 nxt_queue_remove(&engine->link); 3943 3944 port = engine->port; 3945 3946 // TODO notify all apps 3947 3948 port->engine = task->thread->engine; 3949 nxt_mp_thread_adopt(port->mem_pool); 3950 nxt_port_use(task, port, -1); 3951 3952 nxt_mp_thread_adopt(engine->mem_pool); 3953 nxt_mp_destroy(engine->mem_pool); 3954 3955 nxt_event_engine_free(engine); 3956 3957 nxt_free(link); 3958 } 3959 3960 3961 static void 3962 nxt_router_response_ready_handler(nxt_task_t *task, nxt_port_recv_msg_t *msg, 3963 void *data) 3964 { 3965 size_t b_size, count; 3966 nxt_int_t ret; 3967 nxt_app_t *app; 3968 nxt_buf_t *b, *next; 3969 nxt_port_t *app_port; 3970 nxt_unit_field_t *f; 3971 nxt_http_field_t *field; 3972 nxt_http_request_t *r; 3973 nxt_unit_response_t *resp; 3974 nxt_request_rpc_data_t *req_rpc_data; 3975 3976 req_rpc_data = data; 3977 3978 r = req_rpc_data->request; 3979 if (nxt_slow_path(r == NULL)) { 3980 return; 3981 } 3982 3983 if (r->error) { 3984 nxt_request_rpc_data_unlink(task, req_rpc_data); 3985 return; 3986 } 3987 3988 app = req_rpc_data->app; 3989 nxt_assert(app != NULL); 3990 3991 if (msg->port_msg.type == _NXT_PORT_MSG_REQ_HEADERS_ACK) { 3992 nxt_router_req_headers_ack_handler(task, msg, req_rpc_data); 3993 3994 return; 3995 } 3996 3997 b = (msg->size == 0) ? NULL : msg->buf; 3998 3999 if (msg->port_msg.last != 0) { 4000 nxt_debug(task, "router data create last buf"); 4001 4002 nxt_buf_chain_add(&b, nxt_http_buf_last(r)); 4003 4004 req_rpc_data->rpc_cancel = 0; 4005 4006 if (req_rpc_data->apr_action == NXT_APR_REQUEST_FAILED) { 4007 req_rpc_data->apr_action = NXT_APR_GOT_RESPONSE; 4008 } 4009 4010 nxt_request_rpc_data_unlink(task, req_rpc_data); 4011 4012 } else { 4013 if (app->timeout != 0) { 4014 r->timer.handler = nxt_router_app_timeout; 4015 r->timer_data = req_rpc_data; 4016 nxt_timer_add(task->thread->engine, &r->timer, app->timeout); 4017 } 4018 } 4019 4020 if (b == NULL) { 4021 return; 4022 } 4023 4024 if (msg->buf == b) { 4025 /* Disable instant buffer completion/re-using by port. */ 4026 msg->buf = NULL; 4027 } 4028 4029 if (r->header_sent) { 4030 nxt_buf_chain_add(&r->out, b); 4031 nxt_http_request_send_body(task, r, NULL); 4032 4033 } else { 4034 b_size = nxt_buf_is_mem(b) ? nxt_buf_mem_used_size(&b->mem) : 0; 4035 4036 if (nxt_slow_path(b_size < sizeof(nxt_unit_response_t))) { 4037 nxt_alert(task, "response buffer too small: %z", b_size); 4038 goto fail; 4039 } 4040 4041 resp = (void *) b->mem.pos; 4042 count = (b_size - sizeof(nxt_unit_response_t)) 4043 / sizeof(nxt_unit_field_t); 4044 4045 if (nxt_slow_path(count < resp->fields_count)) { 4046 nxt_alert(task, "response buffer too small for fields count: %D", 4047 resp->fields_count); 4048 goto fail; 4049 } 4050 4051 field = NULL; 4052 4053 for (f = resp->fields; f < resp->fields + resp->fields_count; f++) { 4054 if (f->skip) { 4055 continue; 4056 } 4057 4058 field = nxt_list_add(r->resp.fields); 4059 4060 if (nxt_slow_path(field == NULL)) { 4061 goto fail; 4062 } 4063 4064 field->hash = f->hash; 4065 field->skip = 0; 4066 field->hopbyhop = 0; 4067 4068 field->name_length = f->name_length; 4069 field->value_length = f->value_length; 4070 field->name = nxt_unit_sptr_get(&f->name); 4071 field->value = nxt_unit_sptr_get(&f->value); 4072 4073 ret = nxt_http_field_process(field, &nxt_response_fields_hash, r); 4074 if (nxt_slow_path(ret != NXT_OK)) { 4075 goto fail; 4076 } 4077 4078 nxt_debug(task, "header%s: %*s: %*s", 4079 (field->skip ? " skipped" : ""), 4080 (size_t) field->name_length, field->name, 4081 (size_t) field->value_length, field->value); 4082 4083 if (field->skip) { 4084 r->resp.fields->last->nelts--; 4085 } 4086 } 4087 4088 r->status = resp->status; 4089 4090 if (resp->piggyback_content_length != 0) { 4091 b->mem.pos = nxt_unit_sptr_get(&resp->piggyback_content); 4092 b->mem.free = b->mem.pos + resp->piggyback_content_length; 4093 4094 } else { 4095 b->mem.pos = b->mem.free; 4096 } 4097 4098 if (nxt_buf_mem_used_size(&b->mem) == 0) { 4099 next = b->next; 4100 b->next = NULL; 4101 4102 nxt_work_queue_add(&task->thread->engine->fast_work_queue, 4103 b->completion_handler, task, b, b->parent); 4104 4105 b = next; 4106 } 4107 4108 if (b != NULL) { 4109 nxt_buf_chain_add(&r->out, b); 4110 } 4111 4112 nxt_http_request_header_send(task, r, nxt_http_request_send_body, NULL); 4113 4114 if (r->websocket_handshake 4115 && r->status == NXT_HTTP_SWITCHING_PROTOCOLS) 4116 { 4117 app_port = req_rpc_data->app_port; 4118 if (nxt_slow_path(app_port == NULL)) { 4119 goto fail; 4120 } 4121 4122 nxt_thread_mutex_lock(&app->mutex); 4123 4124 app_port->main_app_port->active_websockets++; 4125 4126 nxt_thread_mutex_unlock(&app->mutex); 4127 4128 nxt_router_app_port_release(task, app_port, NXT_APR_UPGRADE); 4129 req_rpc_data->apr_action = NXT_APR_CLOSE; 4130 4131 nxt_debug(task, "stream #%uD upgrade", req_rpc_data->stream); 4132 4133 r->state = &nxt_http_websocket; 4134 4135 } else { 4136 r->state = &nxt_http_request_send_state; 4137 } 4138 } 4139 4140 return; 4141 4142 fail: 4143 4144 nxt_http_request_error(task, r, NXT_HTTP_SERVICE_UNAVAILABLE); 4145 4146 nxt_request_rpc_data_unlink(task, req_rpc_data); 4147 } 4148 4149 4150 static void 4151 nxt_router_req_headers_ack_handler(nxt_task_t *task, 4152 nxt_port_recv_msg_t *msg, nxt_request_rpc_data_t *req_rpc_data) 4153 { 4154 int res; 4155 nxt_app_t *app; 4156 nxt_buf_t *b; 4157 nxt_bool_t start_process, unlinked; 4158 nxt_port_t *app_port, *main_app_port, *idle_port; 4159 nxt_queue_link_t *idle_lnk; 4160 nxt_http_request_t *r; 4161 4162 nxt_debug(task, "stream #%uD: got ack from %PI:%d", 4163 req_rpc_data->stream, 4164 msg->port_msg.pid, msg->port_msg.reply_port); 4165 4166 nxt_port_rpc_ex_set_peer(task, msg->port, req_rpc_data, 4167 msg->port_msg.pid); 4168 4169 app = req_rpc_data->app; 4170 r = req_rpc_data->request; 4171 4172 start_process = 0; 4173 unlinked = 0; 4174 4175 nxt_thread_mutex_lock(&app->mutex); 4176 4177 if (r->app_link.next != NULL) { 4178 nxt_queue_remove(&r->app_link); 4179 r->app_link.next = NULL; 4180 4181 unlinked = 1; 4182 } 4183 4184 app_port = nxt_port_hash_find(&app->port_hash, msg->port_msg.pid, 4185 msg->port_msg.reply_port); 4186 if (nxt_slow_path(app_port == NULL)) { 4187 nxt_thread_mutex_unlock(&app->mutex); 4188 4189 nxt_http_request_error(task, r, NXT_HTTP_INTERNAL_SERVER_ERROR); 4190 4191 if (unlinked) { 4192 nxt_mp_release(r->mem_pool); 4193 } 4194 4195 return; 4196 } 4197 4198 main_app_port = app_port->main_app_port; 4199 4200 if (nxt_queue_chk_remove(&main_app_port->idle_link)) { 4201 app->idle_processes--; 4202 4203 nxt_debug(task, "app '%V' move port %PI:%d out of %s (ack)", 4204 &app->name, main_app_port->pid, main_app_port->id, 4205 (main_app_port->idle_start ? "idle_ports" : "spare_ports")); 4206 4207 /* Check port was in 'spare_ports' using idle_start field. */ 4208 if (main_app_port->idle_start == 0 4209 && app->idle_processes >= app->spare_processes) 4210 { 4211 /* 4212 * If there is a vacant space in spare ports, 4213 * move the last idle to spare_ports. 4214 */ 4215 nxt_assert(!nxt_queue_is_empty(&app->idle_ports)); 4216 4217 idle_lnk = nxt_queue_last(&app->idle_ports); 4218 idle_port = nxt_queue_link_data(idle_lnk, nxt_port_t, idle_link); 4219 nxt_queue_remove(idle_lnk); 4220 4221 nxt_queue_insert_tail(&app->spare_ports, idle_lnk); 4222 4223 idle_port->idle_start = 0; 4224 4225 nxt_debug(task, "app '%V' move port %PI:%d from idle_ports " 4226 "to spare_ports", 4227 &app->name, idle_port->pid, idle_port->id); 4228 } 4229 4230 if (nxt_router_app_can_start(app) && nxt_router_app_need_start(app)) { 4231 app->pending_processes++; 4232 start_process = 1; 4233 } 4234 } 4235 4236 main_app_port->active_requests++; 4237 4238 nxt_port_inc_use(app_port); 4239 4240 nxt_thread_mutex_unlock(&app->mutex); 4241 4242 if (unlinked) { 4243 nxt_mp_release(r->mem_pool); 4244 } 4245 4246 if (start_process) { 4247 nxt_router_start_app_process(task, app); 4248 } 4249 4250 nxt_port_use(task, req_rpc_data->app_port, -1); 4251 4252 req_rpc_data->app_port = app_port; 4253 4254 b = req_rpc_data->msg_info.buf; 4255 4256 if (b != NULL) { 4257 /* First buffer is already sent. Start from second. */ 4258 b = b->next; 4259 4260 req_rpc_data->msg_info.buf->next = NULL; 4261 } 4262 4263 if (req_rpc_data->msg_info.body_fd != -1 || b != NULL) { 4264 nxt_debug(task, "stream #%uD: send body fd %d", req_rpc_data->stream, 4265 req_rpc_data->msg_info.body_fd); 4266 4267 if (req_rpc_data->msg_info.body_fd != -1) { 4268 lseek(req_rpc_data->msg_info.body_fd, 0, SEEK_SET); 4269 } 4270 4271 res = nxt_port_socket_write(task, app_port, NXT_PORT_MSG_REQ_BODY, 4272 req_rpc_data->msg_info.body_fd, 4273 req_rpc_data->stream, 4274 task->thread->engine->port->id, b); 4275 4276 if (nxt_slow_path(res != NXT_OK)) { 4277 nxt_http_request_error(task, r, NXT_HTTP_INTERNAL_SERVER_ERROR); 4278 } 4279 } 4280 4281 if (app->timeout != 0) { 4282 r->timer.handler = nxt_router_app_timeout; 4283 r->timer_data = req_rpc_data; 4284 nxt_timer_add(task->thread->engine, &r->timer, app->timeout); 4285 } 4286 } 4287 4288 4289 static const nxt_http_request_state_t nxt_http_request_send_state 4290 nxt_aligned(64) = 4291 { 4292 .error_handler = nxt_http_request_error_handler, 4293 }; 4294 4295 4296 static void 4297 nxt_http_request_send_body(nxt_task_t *task, void *obj, void *data) 4298 { 4299 nxt_buf_t *out; 4300 nxt_http_request_t *r; 4301 4302 r = obj; 4303 4304 out = r->out; 4305 4306 if (out != NULL) { 4307 r->out = NULL; 4308 nxt_http_request_send(task, r, out); 4309 } 4310 } 4311 4312 4313 static void 4314 nxt_router_response_error_handler(nxt_task_t *task, nxt_port_recv_msg_t *msg, 4315 void *data) 4316 { 4317 nxt_request_rpc_data_t *req_rpc_data; 4318 4319 req_rpc_data = data; 4320 4321 req_rpc_data->rpc_cancel = 0; 4322 4323 /* TODO cancel message and return if cancelled. */ 4324 // nxt_router_msg_cancel(task, &req_rpc_data->msg_info, req_rpc_data->stream); 4325 4326 if (req_rpc_data->request != NULL) { 4327 nxt_http_request_error(task, req_rpc_data->request, 4328 NXT_HTTP_SERVICE_UNAVAILABLE); 4329 } 4330 4331 nxt_request_rpc_data_unlink(task, req_rpc_data); 4332 } 4333 4334 4335 static void 4336 nxt_router_app_port_ready(nxt_task_t *task, nxt_port_recv_msg_t *msg, 4337 void *data) 4338 { 4339 nxt_app_t *app; 4340 nxt_bool_t start_process; 4341 nxt_port_t *port; 4342 nxt_app_joint_t *app_joint; 4343 nxt_app_joint_rpc_t *app_joint_rpc; 4344 4345 nxt_assert(data != NULL); 4346 4347 app_joint_rpc = data; 4348 app_joint = app_joint_rpc->app_joint; 4349 port = msg->u.new_port; 4350 4351 nxt_assert(app_joint != NULL); 4352 nxt_assert(port != NULL); 4353 nxt_assert(port->type == NXT_PROCESS_APP); 4354 nxt_assert(port->id == 0); 4355 4356 app = app_joint->app; 4357 4358 nxt_router_app_joint_use(task, app_joint, -1); 4359 4360 if (nxt_slow_path(app == NULL)) { 4361 nxt_debug(task, "new port ready for released app, send QUIT"); 4362 4363 nxt_port_socket_write(task, port, NXT_PORT_MSG_QUIT, -1, 0, 0, NULL); 4364 4365 return; 4366 } 4367 4368 nxt_thread_mutex_lock(&app->mutex); 4369 4370 nxt_assert(app->pending_processes != 0); 4371 4372 app->pending_processes--; 4373 4374 if (nxt_slow_path(app->generation != app_joint_rpc->generation)) { 4375 nxt_debug(task, "new port ready for restarted app, send QUIT"); 4376 4377 start_process = !task->thread->engine->shutdown 4378 && nxt_router_app_can_start(app) 4379 && nxt_router_app_need_start(app); 4380 4381 if (start_process) { 4382 app->pending_processes++; 4383 } 4384 4385 nxt_thread_mutex_unlock(&app->mutex); 4386 4387 nxt_port_socket_write(task, port, NXT_PORT_MSG_QUIT, -1, 0, 0, NULL); 4388 4389 if (start_process) { 4390 nxt_router_start_app_process(task, app); 4391 } 4392 4393 return; 4394 } 4395 4396 port->app = app; 4397 port->main_app_port = port; 4398 4399 app->processes++; 4400 nxt_port_hash_add(&app->port_hash, port); 4401 app->port_hash_count++; 4402 4403 nxt_thread_mutex_unlock(&app->mutex); 4404 4405 nxt_debug(task, "app '%V' new port ready, pid %PI, %d/%d", 4406 &app->name, port->pid, app->processes, app->pending_processes); 4407 4408 nxt_router_app_shared_port_send(task, port); 4409 4410 nxt_router_app_port_release(task, port, NXT_APR_NEW_PORT); 4411 } 4412 4413 4414 static nxt_int_t 4415 nxt_router_app_shared_port_send(nxt_task_t *task, nxt_port_t *app_port) 4416 { 4417 nxt_buf_t *b; 4418 nxt_port_t *port; 4419 nxt_port_msg_new_port_t *msg; 4420 4421 b = nxt_buf_mem_ts_alloc(task, task->thread->engine->mem_pool, 4422 sizeof(nxt_port_data_t)); 4423 if (nxt_slow_path(b == NULL)) { 4424 return NXT_ERROR; 4425 } 4426 4427 port = app_port->app->shared_port; 4428 4429 nxt_debug(task, "send port %FD to process %PI", 4430 port->pair[0], app_port->pid); 4431 4432 b->mem.free += sizeof(nxt_port_msg_new_port_t); 4433 msg = (nxt_port_msg_new_port_t *) b->mem.pos; 4434 4435 msg->id = port->id; 4436 msg->pid = port->pid; 4437 msg->max_size = port->max_size; 4438 msg->max_share = port->max_share; 4439 msg->type = port->type; 4440 4441 return nxt_port_socket_write2(task, app_port, 4442 NXT_PORT_MSG_NEW_PORT, 4443 port->pair[0], port->queue_fd, 4444 0, 0, b); 4445 } 4446 4447 4448 static void 4449 nxt_router_app_port_error(nxt_task_t *task, nxt_port_recv_msg_t *msg, 4450 void *data) 4451 { 4452 nxt_app_t *app; 4453 nxt_app_joint_t *app_joint; 4454 nxt_queue_link_t *link; 4455 nxt_http_request_t *r; 4456 nxt_app_joint_rpc_t *app_joint_rpc; 4457 4458 nxt_assert(data != NULL); 4459 4460 app_joint_rpc = data; 4461 app_joint = app_joint_rpc->app_joint; 4462 4463 nxt_assert(app_joint != NULL); 4464 4465 app = app_joint->app; 4466 4467 nxt_router_app_joint_use(task, app_joint, -1); 4468 4469 if (nxt_slow_path(app == NULL)) { 4470 nxt_debug(task, "start error for released app"); 4471 4472 return; 4473 } 4474 4475 nxt_debug(task, "app '%V' %p start error", &app->name, app); 4476 4477 link = NULL; 4478 4479 nxt_thread_mutex_lock(&app->mutex); 4480 4481 nxt_assert(app->pending_processes != 0); 4482 4483 app->pending_processes--; 4484 4485 if (app->processes == 0 && !nxt_queue_is_empty(&app->ack_waiting_req)) { 4486 link = nxt_queue_first(&app->ack_waiting_req); 4487 4488 nxt_queue_remove(link); 4489 link->next = NULL; 4490 } 4491 4492 nxt_thread_mutex_unlock(&app->mutex); 4493 4494 while (link != NULL) { 4495 r = nxt_container_of(link, nxt_http_request_t, app_link); 4496 4497 nxt_event_engine_post(r->engine, &r->err_work); 4498 4499 link = NULL; 4500 4501 nxt_thread_mutex_lock(&app->mutex); 4502 4503 if (app->processes == 0 && app->pending_processes == 0 4504 && !nxt_queue_is_empty(&app->ack_waiting_req)) 4505 { 4506 link = nxt_queue_first(&app->ack_waiting_req); 4507 4508 nxt_queue_remove(link); 4509 link->next = NULL; 4510 } 4511 4512 nxt_thread_mutex_unlock(&app->mutex); 4513 } 4514 } 4515 4516 4517 4518 nxt_inline nxt_port_t * 4519 nxt_router_app_get_port_for_quit(nxt_task_t *task, nxt_app_t *app) 4520 { 4521 nxt_port_t *port; 4522 4523 port = NULL; 4524 4525 nxt_thread_mutex_lock(&app->mutex); 4526 4527 nxt_queue_each(port, &app->ports, nxt_port_t, app_link) { 4528 4529 /* Caller is responsible to decrease port use count. */ 4530 nxt_queue_chk_remove(&port->app_link); 4531 4532 if (nxt_queue_chk_remove(&port->idle_link)) { 4533 app->idle_processes--; 4534 4535 nxt_debug(task, "app '%V' move port %PI:%d out of %s for quit", 4536 &app->name, port->pid, port->id, 4537 (port->idle_start ? "idle_ports" : "spare_ports")); 4538 } 4539 4540 nxt_port_hash_remove(&app->port_hash, port); 4541 app->port_hash_count--; 4542 4543 port->app = NULL; 4544 app->processes--; 4545 4546 break; 4547 4548 } nxt_queue_loop; 4549 4550 nxt_thread_mutex_unlock(&app->mutex); 4551 4552 return port; 4553 } 4554 4555 4556 static void 4557 nxt_router_app_use(nxt_task_t *task, nxt_app_t *app, int i) 4558 { 4559 int c; 4560 4561 c = nxt_atomic_fetch_add(&app->use_count, i); 4562 4563 if (i < 0 && c == -i) { 4564 4565 if (task->thread->engine != app->engine) { 4566 nxt_event_engine_post(app->engine, &app->joint->free_app_work); 4567 4568 } else { 4569 nxt_router_free_app(task, app->joint, NULL); 4570 } 4571 } 4572 } 4573 4574 4575 static void 4576 nxt_router_app_unlink(nxt_task_t *task, nxt_app_t *app) 4577 { 4578 nxt_debug(task, "app '%V' %p unlink", &app->name, app); 4579 4580 nxt_queue_remove(&app->link); 4581 4582 nxt_router_app_use(task, app, -1); 4583 } 4584 4585 4586 static void 4587 nxt_router_app_port_release(nxt_task_t *task, nxt_port_t *port, 4588 nxt_apr_action_t action) 4589 { 4590 int inc_use; 4591 uint32_t got_response, dec_requests; 4592 nxt_app_t *app; 4593 nxt_bool_t port_unchained, send_quit, adjust_idle_timer; 4594 nxt_port_t *main_app_port; 4595 4596 nxt_assert(port != NULL); 4597 nxt_assert(port->app != NULL); 4598 4599 app = port->app; 4600 4601 inc_use = 0; 4602 got_response = 0; 4603 dec_requests = 0; 4604 4605 switch (action) { 4606 case NXT_APR_NEW_PORT: 4607 break; 4608 case NXT_APR_REQUEST_FAILED: 4609 dec_requests = 1; 4610 inc_use = -1; 4611 break; 4612 case NXT_APR_GOT_RESPONSE: 4613 got_response = 1; 4614 inc_use = -1; 4615 break; 4616 case NXT_APR_UPGRADE: 4617 got_response = 1; 4618 break; 4619 case NXT_APR_CLOSE: 4620 inc_use = -1; 4621 break; 4622 } 4623 4624 nxt_debug(task, "app '%V' release port %PI:%d: %d %d", &app->name, 4625 port->pid, port->id, 4626 (int) inc_use, (int) got_response); 4627 4628 if (port->id == NXT_SHARED_PORT_ID) { 4629 nxt_thread_mutex_lock(&app->mutex); 4630 4631 app->active_requests -= got_response + dec_requests; 4632 4633 nxt_thread_mutex_unlock(&app->mutex); 4634 4635 goto adjust_use; 4636 } 4637 4638 main_app_port = port->main_app_port; 4639 4640 nxt_thread_mutex_lock(&app->mutex); 4641 4642 main_app_port->app_responses += got_response; 4643 main_app_port->active_requests -= got_response + dec_requests; 4644 app->active_requests -= got_response + dec_requests; 4645 4646 if (main_app_port->pair[1] != -1 4647 && (app->max_requests == 0 4648 || main_app_port->app_responses < app->max_requests)) 4649 { 4650 if (main_app_port->app_link.next == NULL) { 4651 nxt_queue_insert_tail(&app->ports, &main_app_port->app_link); 4652 4653 nxt_port_inc_use(main_app_port); 4654 } 4655 } 4656 4657 send_quit = (app->max_requests > 0 4658 && main_app_port->app_responses >= app->max_requests); 4659 4660 if (send_quit) { 4661 port_unchained = nxt_queue_chk_remove(&main_app_port->app_link); 4662 4663 nxt_port_hash_remove(&app->port_hash, main_app_port); 4664 app->port_hash_count--; 4665 4666 main_app_port->app = NULL; 4667 app->processes--; 4668 4669 } else { 4670 port_unchained = 0; 4671 } 4672 4673 adjust_idle_timer = 0; 4674 4675 if (main_app_port->pair[1] != -1 && !send_quit 4676 && main_app_port->active_requests == 0 4677 && main_app_port->active_websockets == 0 4678 && main_app_port->idle_link.next == NULL) 4679 { 4680 if (app->idle_processes == app->spare_processes 4681 && app->adjust_idle_work.data == NULL) 4682 { 4683 adjust_idle_timer = 1; 4684 app->adjust_idle_work.data = app; 4685 app->adjust_idle_work.next = NULL; 4686 } 4687 4688 if (app->idle_processes < app->spare_processes) { 4689 nxt_queue_insert_tail(&app->spare_ports, &main_app_port->idle_link); 4690 4691 nxt_debug(task, "app '%V' move port %PI:%d to spare_ports", 4692 &app->name, main_app_port->pid, main_app_port->id); 4693 } else { 4694 nxt_queue_insert_tail(&app->idle_ports, &main_app_port->idle_link); 4695 4696 main_app_port->idle_start = task->thread->engine->timers.now; 4697 4698 nxt_debug(task, "app '%V' move port %PI:%d to idle_ports", 4699 &app->name, main_app_port->pid, main_app_port->id); 4700 } 4701 4702 app->idle_processes++; 4703 } 4704 4705 nxt_thread_mutex_unlock(&app->mutex); 4706 4707 if (adjust_idle_timer) { 4708 nxt_router_app_use(task, app, 1); 4709 nxt_event_engine_post(app->engine, &app->adjust_idle_work); 4710 } 4711 4712 /* ? */ 4713 if (main_app_port->pair[1] == -1) { 4714 nxt_debug(task, "app '%V' %p port %p already closed (pid %PI dead?)", 4715 &app->name, app, main_app_port, main_app_port->pid); 4716 4717 goto adjust_use; 4718 } 4719 4720 if (send_quit) { 4721 nxt_debug(task, "app '%V' %p send QUIT to port", &app->name, app); 4722 4723 nxt_port_socket_write(task, main_app_port, NXT_PORT_MSG_QUIT, -1, 0, 0, 4724 NULL); 4725 4726 if (port_unchained) { 4727 nxt_port_use(task, main_app_port, -1); 4728 } 4729 4730 goto adjust_use; 4731 } 4732 4733 nxt_debug(task, "app '%V' %p requests queue is empty, keep the port", 4734 &app->name, app); 4735 4736 adjust_use: 4737 4738 nxt_port_use(task, port, inc_use); 4739 } 4740 4741 4742 void 4743 nxt_router_app_port_close(nxt_task_t *task, nxt_port_t *port) 4744 { 4745 nxt_app_t *app; 4746 nxt_bool_t unchain, start_process; 4747 nxt_port_t *idle_port; 4748 nxt_queue_link_t *idle_lnk; 4749 4750 app = port->app; 4751 4752 nxt_assert(app != NULL); 4753 4754 nxt_thread_mutex_lock(&app->mutex); 4755 4756 nxt_port_hash_remove(&app->port_hash, port); 4757 app->port_hash_count--; 4758 4759 if (port->id != 0) { 4760 nxt_thread_mutex_unlock(&app->mutex); 4761 4762 nxt_debug(task, "app '%V' port (%PI, %d) closed", &app->name, 4763 port->pid, port->id); 4764 4765 return; 4766 } 4767 4768 unchain = nxt_queue_chk_remove(&port->app_link); 4769 4770 if (nxt_queue_chk_remove(&port->idle_link)) { 4771 app->idle_processes--; 4772 4773 nxt_debug(task, "app '%V' move port %PI:%d out of %s before close", 4774 &app->name, port->pid, port->id, 4775 (port->idle_start ? "idle_ports" : "spare_ports")); 4776 4777 if (port->idle_start == 0 4778 && app->idle_processes >= app->spare_processes) 4779 { 4780 nxt_assert(!nxt_queue_is_empty(&app->idle_ports)); 4781 4782 idle_lnk = nxt_queue_last(&app->idle_ports); 4783 idle_port = nxt_queue_link_data(idle_lnk, nxt_port_t, idle_link); 4784 nxt_queue_remove(idle_lnk); 4785 4786 nxt_queue_insert_tail(&app->spare_ports, idle_lnk); 4787 4788 idle_port->idle_start = 0; 4789 4790 nxt_debug(task, "app '%V' move port %PI:%d from idle_ports " 4791 "to spare_ports", 4792 &app->name, idle_port->pid, idle_port->id); 4793 } 4794 } 4795 4796 app->processes--; 4797 4798 start_process = !task->thread->engine->shutdown 4799 && nxt_router_app_can_start(app) 4800 && nxt_router_app_need_start(app); 4801 4802 if (start_process) { 4803 app->pending_processes++; 4804 } 4805 4806 nxt_thread_mutex_unlock(&app->mutex); 4807 4808 nxt_debug(task, "app '%V' pid %PI closed", &app->name, port->pid); 4809 4810 if (unchain) { 4811 nxt_port_use(task, port, -1); 4812 } 4813 4814 if (start_process) { 4815 nxt_router_start_app_process(task, app); 4816 } 4817 } 4818 4819 4820 static void 4821 nxt_router_adjust_idle_timer(nxt_task_t *task, void *obj, void *data) 4822 { 4823 nxt_app_t *app; 4824 nxt_bool_t queued; 4825 nxt_port_t *port; 4826 nxt_msec_t timeout, threshold; 4827 nxt_queue_link_t *lnk; 4828 nxt_event_engine_t *engine; 4829 4830 app = obj; 4831 queued = (data == app); 4832 4833 nxt_debug(task, "nxt_router_adjust_idle_timer: app \"%V\", queued %b", 4834 &app->name, queued); 4835 4836 engine = task->thread->engine; 4837 4838 nxt_assert(app->engine == engine); 4839 4840 threshold = engine->timers.now + app->joint->idle_timer.bias; 4841 timeout = 0; 4842 4843 nxt_thread_mutex_lock(&app->mutex); 4844 4845 if (queued) { 4846 app->adjust_idle_work.data = NULL; 4847 } 4848 4849 nxt_debug(task, "app '%V' idle_processes %d, spare_processes %d", 4850 &app->name, 4851 (int) app->idle_processes, (int) app->spare_processes); 4852 4853 while (app->idle_processes > app->spare_processes) { 4854 4855 nxt_assert(!nxt_queue_is_empty(&app->idle_ports)); 4856 4857 lnk = nxt_queue_first(&app->idle_ports); 4858 port = nxt_queue_link_data(lnk, nxt_port_t, idle_link); 4859 4860 timeout = port->idle_start + app->idle_timeout; 4861 4862 nxt_debug(task, "app '%V' pid %PI, start %M, timeout %M, threshold %M", 4863 &app->name, port->pid, 4864 port->idle_start, timeout, threshold); 4865 4866 if (timeout > threshold) { 4867 break; 4868 } 4869 4870 nxt_queue_remove(lnk); 4871 lnk->next = NULL; 4872 4873 nxt_debug(task, "app '%V' move port %PI:%d out of idle_ports (timeout)", 4874 &app->name, port->pid, port->id); 4875 4876 nxt_queue_chk_remove(&port->app_link); 4877 4878 nxt_port_hash_remove(&app->port_hash, port); 4879 app->port_hash_count--; 4880 4881 app->idle_processes--; 4882 app->processes--; 4883 port->app = NULL; 4884 4885 nxt_thread_mutex_unlock(&app->mutex); 4886 4887 nxt_debug(task, "app '%V' send QUIT to idle port %PI", 4888 &app->name, port->pid); 4889 4890 nxt_port_socket_write(task, port, NXT_PORT_MSG_QUIT, -1, 0, 0, NULL); 4891 4892 nxt_port_use(task, port, -1); 4893 4894 nxt_thread_mutex_lock(&app->mutex); 4895 } 4896 4897 nxt_thread_mutex_unlock(&app->mutex); 4898 4899 if (timeout > threshold) { 4900 nxt_timer_add(engine, &app->joint->idle_timer, timeout - threshold); 4901 4902 } else { 4903 nxt_timer_disable(engine, &app->joint->idle_timer); 4904 } 4905 4906 if (queued) { 4907 nxt_router_app_use(task, app, -1); 4908 } 4909 } 4910 4911 4912 static void 4913 nxt_router_app_idle_timeout(nxt_task_t *task, void *obj, void *data) 4914 { 4915 nxt_timer_t *timer; 4916 nxt_app_joint_t *app_joint; 4917 4918 timer = obj; 4919 app_joint = nxt_container_of(timer, nxt_app_joint_t, idle_timer); 4920 4921 if (nxt_fast_path(app_joint->app != NULL)) { 4922 nxt_router_adjust_idle_timer(task, app_joint->app, NULL); 4923 } 4924 } 4925 4926 4927 static void 4928 nxt_router_app_joint_release_handler(nxt_task_t *task, void *obj, void *data) 4929 { 4930 nxt_timer_t *timer; 4931 nxt_app_joint_t *app_joint; 4932 4933 timer = obj; 4934 app_joint = nxt_container_of(timer, nxt_app_joint_t, idle_timer); 4935 4936 nxt_router_app_joint_use(task, app_joint, -1); 4937 } 4938 4939 4940 static void 4941 nxt_router_free_app(nxt_task_t *task, void *obj, void *data) 4942 { 4943 nxt_app_t *app; 4944 nxt_port_t *port; 4945 nxt_app_joint_t *app_joint; 4946 4947 app_joint = obj; 4948 app = app_joint->app; 4949 4950 for ( ;; ) { 4951 port = nxt_router_app_get_port_for_quit(task, app); 4952 if (port == NULL) { 4953 break; 4954 } 4955 4956 nxt_debug(task, "send QUIT to app '%V' pid %PI", &app->name, port->pid); 4957 4958 nxt_port_socket_write(task, port, NXT_PORT_MSG_QUIT, -1, 0, 0, NULL); 4959 4960 nxt_port_use(task, port, -1); 4961 } 4962 4963 nxt_thread_mutex_lock(&app->mutex); 4964 4965 for ( ;; ) { 4966 port = nxt_port_hash_retrieve(&app->port_hash); 4967 if (port == NULL) { 4968 break; 4969 } 4970 4971 app->port_hash_count--; 4972 4973 port->app = NULL; 4974 4975 nxt_port_close(task, port); 4976 4977 nxt_port_use(task, port, -1); 4978 } 4979 4980 nxt_thread_mutex_unlock(&app->mutex); 4981 4982 nxt_assert(app->processes == 0); 4983 nxt_assert(app->active_requests == 0); 4984 nxt_assert(app->port_hash_count == 0); 4985 nxt_assert(app->idle_processes == 0); 4986 nxt_assert(nxt_queue_is_empty(&app->ports)); 4987 nxt_assert(nxt_queue_is_empty(&app->spare_ports)); 4988 nxt_assert(nxt_queue_is_empty(&app->idle_ports)); 4989 4990 nxt_port_mmaps_destroy(&app->outgoing, 1); 4991 4992 nxt_thread_mutex_destroy(&app->outgoing.mutex); 4993 4994 if (app->shared_port != NULL) { 4995 app->shared_port->app = NULL; 4996 nxt_port_close(task, app->shared_port); 4997 nxt_port_use(task, app->shared_port, -1); 4998 4999 app->shared_port = NULL; 5000 } 5001 5002 nxt_thread_mutex_destroy(&app->mutex); 5003 nxt_mp_destroy(app->mem_pool); 5004 5005 app_joint->app = NULL; 5006 5007 if (nxt_timer_delete(task->thread->engine, &app_joint->idle_timer)) { 5008 app_joint->idle_timer.handler = nxt_router_app_joint_release_handler; 5009 nxt_timer_add(task->thread->engine, &app_joint->idle_timer, 0); 5010 5011 } else { 5012 nxt_router_app_joint_use(task, app_joint, -1); 5013 } 5014 } 5015 5016 5017 static void 5018 nxt_router_app_port_get(nxt_task_t *task, nxt_app_t *app, 5019 nxt_request_rpc_data_t *req_rpc_data) 5020 { 5021 nxt_bool_t start_process; 5022 nxt_port_t *port; 5023 nxt_http_request_t *r; 5024 5025 start_process = 0; 5026 5027 nxt_thread_mutex_lock(&app->mutex); 5028 5029 port = app->shared_port; 5030 nxt_port_inc_use(port); 5031 5032 app->active_requests++; 5033 5034 if (nxt_router_app_can_start(app) && nxt_router_app_need_start(app)) { 5035 app->pending_processes++; 5036 start_process = 1; 5037 } 5038 5039 r = req_rpc_data->request; 5040 5041 /* 5042 * Put request into application-wide list to be able to cancel request 5043 * if something goes wrong with application processes. 5044 */ 5045 nxt_queue_insert_tail(&app->ack_waiting_req, &r->app_link); 5046 5047 nxt_thread_mutex_unlock(&app->mutex); 5048 5049 /* 5050 * Retain request memory pool while request is linked in ack_waiting_req 5051 * to guarantee request structure memory is accessble. 5052 */ 5053 nxt_mp_retain(r->mem_pool); 5054 5055 req_rpc_data->app_port = port; 5056 req_rpc_data->apr_action = NXT_APR_REQUEST_FAILED; 5057 5058 if (start_process) { 5059 nxt_router_start_app_process(task, app); 5060 } 5061 } 5062 5063 5064 void 5065 nxt_router_process_http_request(nxt_task_t *task, nxt_http_request_t *r, 5066 nxt_http_action_t *action) 5067 { 5068 nxt_event_engine_t *engine; 5069 nxt_http_app_conf_t *conf; 5070 nxt_request_rpc_data_t *req_rpc_data; 5071 5072 conf = action->u.conf; 5073 engine = task->thread->engine; 5074 5075 r->app_target = conf->target; 5076 5077 req_rpc_data = nxt_port_rpc_register_handler_ex(task, engine->port, 5078 nxt_router_response_ready_handler, 5079 nxt_router_response_error_handler, 5080 sizeof(nxt_request_rpc_data_t)); 5081 if (nxt_slow_path(req_rpc_data == NULL)) { 5082 nxt_http_request_error(task, r, NXT_HTTP_INTERNAL_SERVER_ERROR); 5083 return; 5084 } 5085 5086 /* 5087 * At this point we have request req_rpc_data allocated and registered 5088 * in port handlers. Need to fixup request memory pool. Counterpart 5089 * release will be called via following call chain: 5090 * nxt_request_rpc_data_unlink() -> 5091 * nxt_router_http_request_release_post() -> 5092 * nxt_router_http_request_release() 5093 */ 5094 nxt_mp_retain(r->mem_pool); 5095 5096 r->timer.task = &engine->task; 5097 r->timer.work_queue = &engine->fast_work_queue; 5098 r->timer.log = engine->task.log; 5099 r->timer.bias = NXT_TIMER_DEFAULT_BIAS; 5100 5101 r->engine = engine; 5102 r->err_work.handler = nxt_router_http_request_error; 5103 r->err_work.task = task; 5104 r->err_work.obj = r; 5105 5106 req_rpc_data->stream = nxt_port_rpc_ex_stream(req_rpc_data); 5107 req_rpc_data->app = conf->app; 5108 req_rpc_data->msg_info.body_fd = -1; 5109 req_rpc_data->rpc_cancel = 1; 5110 5111 nxt_router_app_use(task, conf->app, 1); 5112 5113 req_rpc_data->request = r; 5114 r->req_rpc_data = req_rpc_data; 5115 5116 if (r->last != NULL) { 5117 r->last->completion_handler = nxt_router_http_request_done; 5118 } 5119 5120 nxt_router_app_port_get(task, conf->app, req_rpc_data); 5121 nxt_router_app_prepare_request(task, req_rpc_data); 5122 } 5123 5124 5125 static void 5126 nxt_router_http_request_error(nxt_task_t *task, void *obj, void *data) 5127 { 5128 nxt_http_request_t *r; 5129 5130 r = obj; 5131 5132 nxt_debug(task, "router http request error (rpc_data %p)", r->req_rpc_data); 5133 5134 nxt_http_request_error(task, r, NXT_HTTP_SERVICE_UNAVAILABLE); 5135 5136 if (r->req_rpc_data != NULL) { 5137 nxt_request_rpc_data_unlink(task, r->req_rpc_data); 5138 } 5139 5140 nxt_mp_release(r->mem_pool); 5141 } 5142 5143 5144 static void 5145 nxt_router_http_request_done(nxt_task_t *task, void *obj, void *data) 5146 { 5147 nxt_http_request_t *r; 5148 5149 r = data; 5150 5151 nxt_debug(task, "router http request done (rpc_data %p)", r->req_rpc_data); 5152 5153 if (r->req_rpc_data != NULL) { 5154 nxt_request_rpc_data_unlink(task, r->req_rpc_data); 5155 } 5156 5157 nxt_http_request_close_handler(task, r, r->proto.any); 5158 } 5159 5160 5161 static void 5162 nxt_router_dummy_buf_completion(nxt_task_t *task, void *obj, void *data) 5163 { 5164 } 5165 5166 5167 static void 5168 nxt_router_app_prepare_request(nxt_task_t *task, 5169 nxt_request_rpc_data_t *req_rpc_data) 5170 { 5171 nxt_app_t *app; 5172 nxt_buf_t *buf, *body; 5173 nxt_int_t res; 5174 nxt_port_t *port, *reply_port; 5175 5176 int notify; 5177 struct { 5178 nxt_port_msg_t pm; 5179 nxt_port_mmap_msg_t mm; 5180 } msg; 5181 5182 5183 app = req_rpc_data->app; 5184 5185 nxt_assert(app != NULL); 5186 5187 port = req_rpc_data->app_port; 5188 5189 nxt_assert(port != NULL); 5190 nxt_assert(port->queue != NULL); 5191 5192 reply_port = task->thread->engine->port; 5193 5194 buf = nxt_router_prepare_msg(task, req_rpc_data->request, app, 5195 nxt_app_msg_prefix[app->type]); 5196 if (nxt_slow_path(buf == NULL)) { 5197 nxt_alert(task, "stream #%uD, app '%V': failed to prepare app message", 5198 req_rpc_data->stream, &app->name); 5199 5200 nxt_http_request_error(task, req_rpc_data->request, 5201 NXT_HTTP_INTERNAL_SERVER_ERROR); 5202 5203 return; 5204 } 5205 5206 nxt_debug(task, "about to send %O bytes buffer to app process port %d", 5207 nxt_buf_used_size(buf), 5208 port->socket.fd); 5209 5210 req_rpc_data->msg_info.buf = buf; 5211 5212 body = req_rpc_data->request->body; 5213 5214 if (body != NULL && nxt_buf_is_file(body)) { 5215 req_rpc_data->msg_info.body_fd = body->file->fd; 5216 5217 body->file->fd = -1; 5218 5219 } else { 5220 req_rpc_data->msg_info.body_fd = -1; 5221 } 5222 5223 msg.pm.stream = req_rpc_data->stream; 5224 msg.pm.pid = reply_port->pid; 5225 msg.pm.reply_port = reply_port->id; 5226 msg.pm.type = NXT_PORT_MSG_REQ_HEADERS; 5227 msg.pm.last = 0; 5228 msg.pm.mmap = 1; 5229 msg.pm.nf = 0; 5230 msg.pm.mf = 0; 5231 msg.pm.tracking = 0; 5232 5233 nxt_port_mmap_handler_t *mmap_handler = buf->parent; 5234 nxt_port_mmap_header_t *hdr = mmap_handler->hdr; 5235 5236 msg.mm.mmap_id = hdr->id; 5237 msg.mm.chunk_id = nxt_port_mmap_chunk_id(hdr, buf->mem.pos); 5238 msg.mm.size = nxt_buf_used_size(buf); 5239 5240 res = nxt_app_queue_send(port->queue, &msg, sizeof(msg), 5241 req_rpc_data->stream, ¬ify, 5242 &req_rpc_data->msg_info.tracking_cookie); 5243 if (nxt_fast_path(res == NXT_OK)) { 5244 if (notify != 0) { 5245 (void) nxt_port_socket_write(task, port, 5246 NXT_PORT_MSG_READ_QUEUE, 5247 -1, req_rpc_data->stream, 5248 reply_port->id, NULL); 5249 5250 } else { 5251 nxt_debug(task, "queue is not empty"); 5252 } 5253 5254 buf->is_port_mmap_sent = 1; 5255 buf->mem.pos = buf->mem.free; 5256 5257 } else { 5258 nxt_alert(task, "stream #%uD, app '%V': failed to send app message", 5259 req_rpc_data->stream, &app->name); 5260 5261 nxt_http_request_error(task, req_rpc_data->request, 5262 NXT_HTTP_INTERNAL_SERVER_ERROR); 5263 } 5264 } 5265 5266 5267 struct nxt_fields_iter_s { 5268 nxt_list_part_t *part; 5269 nxt_http_field_t *field; 5270 }; 5271 5272 typedef struct nxt_fields_iter_s nxt_fields_iter_t; 5273 5274 5275 static nxt_http_field_t * 5276 nxt_fields_part_first(nxt_list_part_t *part, nxt_fields_iter_t *i) 5277 { 5278 if (part == NULL) { 5279 return NULL; 5280 } 5281 5282 while (part->nelts == 0) { 5283 part = part->next; 5284 if (part == NULL) { 5285 return NULL; 5286 } 5287 } 5288 5289 i->part = part; 5290 i->field = nxt_list_data(i->part); 5291 5292 return i->field; 5293 } 5294 5295 5296 static nxt_http_field_t * 5297 nxt_fields_first(nxt_list_t *fields, nxt_fields_iter_t *i) 5298 { 5299 return nxt_fields_part_first(nxt_list_part(fields), i); 5300 } 5301 5302 5303 static nxt_http_field_t * 5304 nxt_fields_next(nxt_fields_iter_t *i) 5305 { 5306 nxt_http_field_t *end = nxt_list_data(i->part); 5307 5308 end += i->part->nelts; 5309 i->field++; 5310 5311 if (i->field < end) { 5312 return i->field; 5313 } 5314 5315 return nxt_fields_part_first(i->part->next, i); 5316 } 5317 5318 5319 static nxt_buf_t * 5320 nxt_router_prepare_msg(nxt_task_t *task, nxt_http_request_t *r, 5321 nxt_app_t *app, const nxt_str_t *prefix) 5322 { 5323 void *target_pos, *query_pos; 5324 u_char *pos, *end, *p, c; 5325 size_t fields_count, req_size, size, free_size; 5326 size_t copy_size; 5327 nxt_off_t content_length; 5328 nxt_buf_t *b, *buf, *out, **tail; 5329 nxt_http_field_t *field, *dup; 5330 nxt_unit_field_t *dst_field; 5331 nxt_fields_iter_t iter, dup_iter; 5332 nxt_unit_request_t *req; 5333 5334 req_size = sizeof(nxt_unit_request_t) 5335 + r->method->length + 1 5336 + r->version.length + 1 5337 + r->remote->length + 1 5338 + r->local->length + 1 5339 + r->server_name.length + 1 5340 + r->target.length + 1 5341 + (r->path->start != r->target.start ? r->path->length + 1 : 0); 5342 5343 content_length = r->content_length_n < 0 ? 0 : r->content_length_n; 5344 fields_count = 0; 5345 5346 nxt_list_each(field, r->fields) { 5347 fields_count++; 5348 5349 req_size += field->name_length + prefix->length + 1 5350 + field->value_length + 1; 5351 } nxt_list_loop; 5352 5353 req_size += fields_count * sizeof(nxt_unit_field_t); 5354 5355 if (nxt_slow_path(req_size > PORT_MMAP_DATA_SIZE)) { 5356 nxt_alert(task, "headers to big to fit in shared memory (%d)", 5357 (int) req_size); 5358 5359 return NULL; 5360 } 5361 5362 out = nxt_port_mmap_get_buf(task, &app->outgoing, 5363 nxt_min(req_size + content_length, PORT_MMAP_DATA_SIZE)); 5364 if (nxt_slow_path(out == NULL)) { 5365 return NULL; 5366 } 5367 5368 req = (nxt_unit_request_t *) out->mem.free; 5369 out->mem.free += req_size; 5370 5371 req->app_target = r->app_target; 5372 5373 req->content_length = content_length; 5374 5375 p = (u_char *) (req->fields + fields_count); 5376 5377 nxt_debug(task, "fields_count=%d", (int) fields_count); 5378 5379 req->method_length = r->method->length; 5380 nxt_unit_sptr_set(&req->method, p); 5381 p = nxt_cpymem(p, r->method->start, r->method->length); 5382 *p++ = '\0'; 5383 5384 req->version_length = r->version.length; 5385 nxt_unit_sptr_set(&req->version, p); 5386 p = nxt_cpymem(p, r->version.start, r->version.length); 5387 *p++ = '\0'; 5388 5389 req->remote_length = r->remote->address_length; 5390 nxt_unit_sptr_set(&req->remote, p); 5391 p = nxt_cpymem(p, nxt_sockaddr_address(r->remote), 5392 r->remote->address_length); 5393 *p++ = '\0'; 5394 5395 req->local_length = r->local->address_length; 5396 nxt_unit_sptr_set(&req->local, p); 5397 p = nxt_cpymem(p, nxt_sockaddr_address(r->local), r->local->address_length); 5398 *p++ = '\0'; 5399 5400 req->tls = (r->tls != NULL); 5401 req->websocket_handshake = r->websocket_handshake; 5402 5403 req->server_name_length = r->server_name.length; 5404 nxt_unit_sptr_set(&req->server_name, p); 5405 p = nxt_cpymem(p, r->server_name.start, r->server_name.length); 5406 *p++ = '\0'; 5407 5408 target_pos = p; 5409 req->target_length = (uint32_t) r->target.length; 5410 nxt_unit_sptr_set(&req->target, p); 5411 p = nxt_cpymem(p, r->target.start, r->target.length); 5412 *p++ = '\0'; 5413 5414 req->path_length = (uint32_t) r->path->length; 5415 if (r->path->start == r->target.start) { 5416 nxt_unit_sptr_set(&req->path, target_pos); 5417 5418 } else { 5419 nxt_unit_sptr_set(&req->path, p); 5420 p = nxt_cpymem(p, r->path->start, r->path->length); 5421 *p++ = '\0'; 5422 } 5423 5424 req->query_length = r->args != NULL ? (uint32_t) r->args->length : 0; 5425 if (r->args != NULL && r->args->start != NULL) { 5426 query_pos = nxt_pointer_to(target_pos, 5427 r->args->start - r->target.start); 5428 5429 nxt_unit_sptr_set(&req->query, query_pos); 5430 5431 } else { 5432 req->query.offset = 0; 5433 } 5434 5435 req->content_length_field = NXT_UNIT_NONE_FIELD; 5436 req->content_type_field = NXT_UNIT_NONE_FIELD; 5437 req->cookie_field = NXT_UNIT_NONE_FIELD; 5438 req->authorization_field = NXT_UNIT_NONE_FIELD; 5439 5440 dst_field = req->fields; 5441 5442 for (field = nxt_fields_first(r->fields, &iter); 5443 field != NULL; 5444 field = nxt_fields_next(&iter)) 5445 { 5446 if (field->skip) { 5447 continue; 5448 } 5449 5450 dst_field->hash = field->hash; 5451 dst_field->skip = 0; 5452 dst_field->name_length = field->name_length + prefix->length; 5453 dst_field->value_length = field->value_length; 5454 5455 if (field == r->content_length) { 5456 req->content_length_field = dst_field - req->fields; 5457 5458 } else if (field == r->content_type) { 5459 req->content_type_field = dst_field - req->fields; 5460 5461 } else if (field == r->cookie) { 5462 req->cookie_field = dst_field - req->fields; 5463 5464 } else if (field == r->authorization) { 5465 req->authorization_field = dst_field - req->fields; 5466 } 5467 5468 nxt_debug(task, "add field 0x%04Xd, %d, %d, %p : %d %p", 5469 (int) field->hash, (int) field->skip, 5470 (int) field->name_length, field->name, 5471 (int) field->value_length, field->value); 5472 5473 if (prefix->length != 0) { 5474 nxt_unit_sptr_set(&dst_field->name, p); 5475 p = nxt_cpymem(p, prefix->start, prefix->length); 5476 5477 end = field->name + field->name_length; 5478 for (pos = field->name; pos < end; pos++) { 5479 c = *pos; 5480 5481 if (c >= 'a' && c <= 'z') { 5482 *p++ = (c & ~0x20); 5483 continue; 5484 } 5485 5486 if (c == '-') { 5487 *p++ = '_'; 5488 continue; 5489 } 5490 5491 *p++ = c; 5492 } 5493 5494 } else { 5495 nxt_unit_sptr_set(&dst_field->name, p); 5496 p = nxt_cpymem(p, field->name, field->name_length); 5497 } 5498 5499 *p++ = '\0'; 5500 5501 nxt_unit_sptr_set(&dst_field->value, p); 5502 p = nxt_cpymem(p, field->value, field->value_length); 5503 5504 if (prefix->length != 0) { 5505 dup_iter = iter; 5506 5507 for (dup = nxt_fields_next(&dup_iter); 5508 dup != NULL; 5509 dup = nxt_fields_next(&dup_iter)) 5510 { 5511 if (dup->name_length != field->name_length 5512 || dup->skip 5513 || dup->hash != field->hash 5514 || nxt_memcasecmp(dup->name, field->name, dup->name_length)) 5515 { 5516 continue; 5517 } 5518 5519 p = nxt_cpymem(p, ", ", 2); 5520 p = nxt_cpymem(p, dup->value, dup->value_length); 5521 5522 dst_field->value_length += 2 + dup->value_length; 5523 5524 dup->skip = 1; 5525 } 5526 } 5527 5528 *p++ = '\0'; 5529 5530 dst_field++; 5531 } 5532 5533 req->fields_count = (uint32_t) (dst_field - req->fields); 5534 5535 nxt_unit_sptr_set(&req->preread_content, out->mem.free); 5536 5537 buf = out; 5538 tail = &buf->next; 5539 5540 for (b = r->body; b != NULL; b = b->next) { 5541 size = nxt_buf_mem_used_size(&b->mem); 5542 pos = b->mem.pos; 5543 5544 while (size > 0) { 5545 if (buf == NULL) { 5546 free_size = nxt_min(size, PORT_MMAP_DATA_SIZE); 5547 5548 buf = nxt_port_mmap_get_buf(task, &app->outgoing, free_size); 5549 if (nxt_slow_path(buf == NULL)) { 5550 while (out != NULL) { 5551 buf = out->next; 5552 out->next = NULL; 5553 out->completion_handler(task, out, out->parent); 5554 out = buf; 5555 } 5556 return NULL; 5557 } 5558 5559 *tail = buf; 5560 tail = &buf->next; 5561 5562 } else { 5563 free_size = nxt_buf_mem_free_size(&buf->mem); 5564 if (free_size < size 5565 && nxt_port_mmap_increase_buf(task, buf, size, 1) 5566 == NXT_OK) 5567 { 5568 free_size = nxt_buf_mem_free_size(&buf->mem); 5569 } 5570 } 5571 5572 if (free_size > 0) { 5573 copy_size = nxt_min(free_size, size); 5574 5575 buf->mem.free = nxt_cpymem(buf->mem.free, pos, copy_size); 5576 5577 size -= copy_size; 5578 pos += copy_size; 5579 5580 if (size == 0) { 5581 break; 5582 } 5583 } 5584 5585 buf = NULL; 5586 } 5587 } 5588 5589 return out; 5590 } 5591 5592 5593 static void 5594 nxt_router_app_timeout(nxt_task_t *task, void *obj, void *data) 5595 { 5596 nxt_timer_t *timer; 5597 nxt_http_request_t *r; 5598 nxt_request_rpc_data_t *req_rpc_data; 5599 5600 timer = obj; 5601 5602 nxt_debug(task, "router app timeout"); 5603 5604 r = nxt_timer_data(timer, nxt_http_request_t, timer); 5605 req_rpc_data = r->timer_data; 5606 5607 nxt_http_request_error(task, r, NXT_HTTP_SERVICE_UNAVAILABLE); 5608 5609 nxt_request_rpc_data_unlink(task, req_rpc_data); 5610 } 5611 5612 5613 static void 5614 nxt_router_http_request_release_post(nxt_task_t *task, nxt_http_request_t *r) 5615 { 5616 r->timer.handler = nxt_router_http_request_release; 5617 nxt_timer_add(task->thread->engine, &r->timer, 0); 5618 } 5619 5620 5621 static void 5622 nxt_router_http_request_release(nxt_task_t *task, void *obj, void *data) 5623 { 5624 nxt_http_request_t *r; 5625 5626 nxt_debug(task, "http request pool release"); 5627 5628 r = nxt_timer_data(obj, nxt_http_request_t, timer); 5629 5630 nxt_mp_release(r->mem_pool); 5631 } 5632 5633 5634 static void 5635 nxt_router_oosm_handler(nxt_task_t *task, nxt_port_recv_msg_t *msg) 5636 { 5637 size_t mi; 5638 uint32_t i; 5639 nxt_bool_t ack; 5640 nxt_process_t *process; 5641 nxt_free_map_t *m; 5642 nxt_port_mmap_handler_t *mmap_handler; 5643 5644 nxt_debug(task, "oosm in %PI", msg->port_msg.pid); 5645 5646 process = nxt_runtime_process_find(task->thread->runtime, 5647 msg->port_msg.pid); 5648 if (nxt_slow_path(process == NULL)) { 5649 return; 5650 } 5651 5652 ack = 0; 5653 5654 /* 5655 * To mitigate possible racing condition (when OOSM message received 5656 * after some of the memory was already freed), need to try to find 5657 * first free segment in shared memory and send ACK if found. 5658 */ 5659 5660 nxt_thread_mutex_lock(&process->incoming.mutex); 5661 5662 for (i = 0; i < process->incoming.size; i++) { 5663 mmap_handler = process->incoming.elts[i].mmap_handler; 5664 5665 if (nxt_slow_path(mmap_handler == NULL)) { 5666 continue; 5667 } 5668 5669 m = mmap_handler->hdr->free_map; 5670 5671 for (mi = 0; mi < MAX_FREE_IDX; mi++) { 5672 if (m[mi] != 0) { 5673 ack = 1; 5674 5675 nxt_debug(task, "oosm: already free #%uD %uz = 0x%08xA", 5676 i, mi, m[mi]); 5677 5678 break; 5679 } 5680 } 5681 } 5682 5683 nxt_thread_mutex_unlock(&process->incoming.mutex); 5684 5685 if (ack) { 5686 nxt_process_broadcast_shm_ack(task, process); 5687 } 5688 } 5689 5690 5691 static void 5692 nxt_router_get_mmap_handler(nxt_task_t *task, nxt_port_recv_msg_t *msg) 5693 { 5694 nxt_fd_t fd; 5695 nxt_port_t *port; 5696 nxt_runtime_t *rt; 5697 nxt_port_mmaps_t *mmaps; 5698 nxt_port_msg_get_mmap_t *get_mmap_msg; 5699 nxt_port_mmap_handler_t *mmap_handler; 5700 5701 rt = task->thread->runtime; 5702 5703 port = nxt_runtime_port_find(rt, msg->port_msg.pid, 5704 msg->port_msg.reply_port); 5705 if (nxt_slow_path(port == NULL)) { 5706 nxt_alert(task, "get_mmap_handler: reply_port %PI:%d not found", 5707 msg->port_msg.pid, msg->port_msg.reply_port); 5708 5709 return; 5710 } 5711 5712 if (nxt_slow_path(nxt_buf_used_size(msg->buf) 5713 < (int) sizeof(nxt_port_msg_get_mmap_t))) 5714 { 5715 nxt_alert(task, "get_mmap_handler: message buffer too small (%d)", 5716 (int) nxt_buf_used_size(msg->buf)); 5717 5718 return; 5719 } 5720 5721 get_mmap_msg = (nxt_port_msg_get_mmap_t *) msg->buf->mem.pos; 5722 5723 nxt_assert(port->type == NXT_PROCESS_APP); 5724 5725 if (nxt_slow_path(port->app == NULL)) { 5726 nxt_alert(task, "get_mmap_handler: app == NULL for reply port %PI:%d", 5727 port->pid, port->id); 5728 5729 // FIXME 5730 nxt_port_socket_write(task, port, NXT_PORT_MSG_RPC_ERROR, 5731 -1, msg->port_msg.stream, 0, NULL); 5732 5733 return; 5734 } 5735 5736 mmaps = &port->app->outgoing; 5737 nxt_thread_mutex_lock(&mmaps->mutex); 5738 5739 if (nxt_slow_path(get_mmap_msg->id >= mmaps->size)) { 5740 nxt_thread_mutex_unlock(&mmaps->mutex); 5741 5742 nxt_alert(task, "get_mmap_handler: mmap id is too big (%d)", 5743 (int) get_mmap_msg->id); 5744 5745 // FIXME 5746 nxt_port_socket_write(task, port, NXT_PORT_MSG_RPC_ERROR, 5747 -1, msg->port_msg.stream, 0, NULL); 5748 return; 5749 } 5750 5751 mmap_handler = mmaps->elts[get_mmap_msg->id].mmap_handler; 5752 5753 fd = mmap_handler->fd; 5754 5755 nxt_thread_mutex_unlock(&mmaps->mutex); 5756 5757 nxt_debug(task, "get mmap %PI:%d found", 5758 msg->port_msg.pid, (int) get_mmap_msg->id); 5759 5760 (void) nxt_port_socket_write(task, port, NXT_PORT_MSG_MMAP, fd, 0, 0, NULL); 5761 } 5762 5763 5764 static void 5765 nxt_router_get_port_handler(nxt_task_t *task, nxt_port_recv_msg_t *msg) 5766 { 5767 nxt_port_t *port, *reply_port; 5768 nxt_runtime_t *rt; 5769 nxt_port_msg_get_port_t *get_port_msg; 5770 5771 rt = task->thread->runtime; 5772 5773 reply_port = nxt_runtime_port_find(rt, msg->port_msg.pid, 5774 msg->port_msg.reply_port); 5775 if (nxt_slow_path(reply_port == NULL)) { 5776 nxt_alert(task, "get_port_handler: reply_port %PI:%d not found", 5777 msg->port_msg.pid, msg->port_msg.reply_port); 5778 5779 return; 5780 } 5781 5782 if (nxt_slow_path(nxt_buf_used_size(msg->buf) 5783 < (int) sizeof(nxt_port_msg_get_port_t))) 5784 { 5785 nxt_alert(task, "get_port_handler: message buffer too small (%d)", 5786 (int) nxt_buf_used_size(msg->buf)); 5787 5788 return; 5789 } 5790 5791 get_port_msg = (nxt_port_msg_get_port_t *) msg->buf->mem.pos; 5792 5793 port = nxt_runtime_port_find(rt, get_port_msg->pid, get_port_msg->id); 5794 if (nxt_slow_path(port == NULL)) { 5795 nxt_alert(task, "get_port_handler: port %PI:%d not found", 5796 get_port_msg->pid, get_port_msg->id); 5797 5798 return; 5799 } 5800 5801 nxt_debug(task, "get port %PI:%d found", get_port_msg->pid, 5802 get_port_msg->id); 5803 5804 (void) nxt_port_send_port(task, reply_port, port, msg->port_msg.stream); 5805 } 5806