| /* |
| * |
| * Copyright 2015 gRPC authors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| #include <grpc/support/port_platform.h> |
| #include "test/core/util/test_config.h" |
| |
| #ifdef GRPC_TEST_PICK_PORT |
| #include "test/core/util/port_server_client.h" |
| |
| #include <math.h> |
| #include <string.h> |
| |
| #include <grpc/grpc.h> |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/log.h> |
| #include <grpc/support/string_util.h> |
| #include <grpc/support/sync.h> |
| #include <grpc/support/time.h> |
| |
| #include "src/core/lib/http/httpcli.h" |
| |
| typedef struct freereq { |
| gpr_mu* mu; |
| grpc_polling_entity pops; |
| int done; |
| } freereq; |
| |
| static void destroy_pops_and_shutdown(grpc_exec_ctx* exec_ctx, void* p, |
| grpc_error* error) { |
| grpc_pollset* pollset = grpc_polling_entity_pollset((grpc_polling_entity*)p); |
| grpc_pollset_destroy(exec_ctx, pollset); |
| gpr_free(pollset); |
| } |
| |
| static void freed_port_from_server(grpc_exec_ctx* exec_ctx, void* arg, |
| grpc_error* error) { |
| freereq* pr = (freereq*)arg; |
| gpr_mu_lock(pr->mu); |
| pr->done = 1; |
| GRPC_LOG_IF_ERROR( |
| "pollset_kick", |
| grpc_pollset_kick(exec_ctx, grpc_polling_entity_pollset(&pr->pops), |
| nullptr)); |
| gpr_mu_unlock(pr->mu); |
| } |
| |
| void grpc_free_port_using_server(int port) { |
| grpc_httpcli_context context; |
| grpc_httpcli_request req; |
| grpc_httpcli_response rsp; |
| freereq pr; |
| char* path; |
| grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
| grpc_closure* shutdown_closure; |
| |
| grpc_init(); |
| |
| memset(&pr, 0, sizeof(pr)); |
| memset(&req, 0, sizeof(req)); |
| memset(&rsp, 0, sizeof(rsp)); |
| |
| grpc_pollset* pollset = (grpc_pollset*)gpr_zalloc(grpc_pollset_size()); |
| grpc_pollset_init(pollset, &pr.mu); |
| pr.pops = grpc_polling_entity_create_from_pollset(pollset); |
| shutdown_closure = GRPC_CLOSURE_CREATE(destroy_pops_and_shutdown, &pr.pops, |
| grpc_schedule_on_exec_ctx); |
| |
| req.host = const_cast<char*>(GRPC_PORT_SERVER_ADDRESS); |
| gpr_asprintf(&path, "/drop/%d", port); |
| req.http.path = path; |
| |
| grpc_httpcli_context_init(&context); |
| grpc_resource_quota* resource_quota = |
| grpc_resource_quota_create("port_server_client/free"); |
| grpc_httpcli_get(&exec_ctx, &context, &pr.pops, resource_quota, &req, |
| grpc_exec_ctx_now(&exec_ctx) + 30 * GPR_MS_PER_SEC, |
| GRPC_CLOSURE_CREATE(freed_port_from_server, &pr, |
| grpc_schedule_on_exec_ctx), |
| &rsp); |
| grpc_resource_quota_unref_internal(&exec_ctx, resource_quota); |
| grpc_exec_ctx_flush(&exec_ctx); |
| gpr_mu_lock(pr.mu); |
| while (!pr.done) { |
| grpc_pollset_worker* worker = nullptr; |
| if (!GRPC_LOG_IF_ERROR( |
| "pollset_work", |
| grpc_pollset_work(&exec_ctx, grpc_polling_entity_pollset(&pr.pops), |
| &worker, |
| grpc_exec_ctx_now(&exec_ctx) + GPR_MS_PER_SEC))) { |
| pr.done = 1; |
| } |
| } |
| gpr_mu_unlock(pr.mu); |
| |
| grpc_httpcli_context_destroy(&exec_ctx, &context); |
| grpc_pollset_shutdown(&exec_ctx, grpc_polling_entity_pollset(&pr.pops), |
| shutdown_closure); |
| grpc_exec_ctx_finish(&exec_ctx); |
| gpr_free(path); |
| grpc_http_response_destroy(&rsp); |
| |
| grpc_shutdown(); |
| } |
| |
| typedef struct portreq { |
| gpr_mu* mu; |
| grpc_polling_entity pops; |
| int port; |
| int retries; |
| char* server; |
| grpc_httpcli_context* ctx; |
| grpc_httpcli_response response; |
| } portreq; |
| |
| static void got_port_from_server(grpc_exec_ctx* exec_ctx, void* arg, |
| grpc_error* error) { |
| size_t i; |
| int port = 0; |
| portreq* pr = (portreq*)arg; |
| int failed = 0; |
| grpc_httpcli_response* response = &pr->response; |
| |
| if (error != GRPC_ERROR_NONE) { |
| failed = 1; |
| const char* msg = grpc_error_string(error); |
| gpr_log(GPR_DEBUG, "failed port pick from server: retrying [%s]", msg); |
| |
| } else if (response->status != 200) { |
| failed = 1; |
| gpr_log(GPR_DEBUG, "failed port pick from server: status=%d", |
| response->status); |
| } |
| |
| if (failed) { |
| grpc_httpcli_request req; |
| memset(&req, 0, sizeof(req)); |
| if (pr->retries >= 5) { |
| gpr_mu_lock(pr->mu); |
| pr->port = 0; |
| GRPC_LOG_IF_ERROR( |
| "pollset_kick", |
| grpc_pollset_kick(exec_ctx, grpc_polling_entity_pollset(&pr->pops), |
| nullptr)); |
| gpr_mu_unlock(pr->mu); |
| return; |
| } |
| GPR_ASSERT(pr->retries < 10); |
| gpr_sleep_until(gpr_time_add( |
| gpr_now(GPR_CLOCK_REALTIME), |
| gpr_time_from_millis( |
| (int64_t)(1000.0 * (1 + pow(1.3, pr->retries) * rand() / RAND_MAX)), |
| GPR_TIMESPAN))); |
| pr->retries++; |
| req.host = pr->server; |
| req.http.path = const_cast<char*>("/get"); |
| grpc_http_response_destroy(&pr->response); |
| memset(&pr->response, 0, sizeof(pr->response)); |
| grpc_resource_quota* resource_quota = |
| grpc_resource_quota_create("port_server_client/pick_retry"); |
| grpc_httpcli_get(exec_ctx, pr->ctx, &pr->pops, resource_quota, &req, |
| grpc_exec_ctx_now(exec_ctx) + 30 * GPR_MS_PER_SEC, |
| GRPC_CLOSURE_CREATE(got_port_from_server, pr, |
| grpc_schedule_on_exec_ctx), |
| &pr->response); |
| grpc_resource_quota_unref_internal(exec_ctx, resource_quota); |
| return; |
| } |
| GPR_ASSERT(response); |
| GPR_ASSERT(response->status == 200); |
| for (i = 0; i < response->body_length; i++) { |
| GPR_ASSERT(response->body[i] >= '0' && response->body[i] <= '9'); |
| port = port * 10 + response->body[i] - '0'; |
| } |
| GPR_ASSERT(port > 1024); |
| gpr_mu_lock(pr->mu); |
| pr->port = port; |
| GRPC_LOG_IF_ERROR( |
| "pollset_kick", |
| grpc_pollset_kick(exec_ctx, grpc_polling_entity_pollset(&pr->pops), |
| nullptr)); |
| gpr_mu_unlock(pr->mu); |
| } |
| |
| int grpc_pick_port_using_server(void) { |
| grpc_httpcli_context context; |
| grpc_httpcli_request req; |
| portreq pr; |
| grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
| grpc_closure* shutdown_closure; |
| |
| grpc_init(); |
| |
| memset(&pr, 0, sizeof(pr)); |
| memset(&req, 0, sizeof(req)); |
| grpc_pollset* pollset = (grpc_pollset*)gpr_zalloc(grpc_pollset_size()); |
| grpc_pollset_init(pollset, &pr.mu); |
| pr.pops = grpc_polling_entity_create_from_pollset(pollset); |
| shutdown_closure = GRPC_CLOSURE_CREATE(destroy_pops_and_shutdown, &pr.pops, |
| grpc_schedule_on_exec_ctx); |
| pr.port = -1; |
| pr.server = const_cast<char*>(GRPC_PORT_SERVER_ADDRESS); |
| pr.ctx = &context; |
| |
| req.host = const_cast<char*>(GRPC_PORT_SERVER_ADDRESS); |
| req.http.path = const_cast<char*>("/get"); |
| |
| grpc_httpcli_context_init(&context); |
| grpc_resource_quota* resource_quota = |
| grpc_resource_quota_create("port_server_client/pick"); |
| grpc_httpcli_get( |
| &exec_ctx, &context, &pr.pops, resource_quota, &req, |
| grpc_exec_ctx_now(&exec_ctx) + 30 * GPR_MS_PER_SEC, |
| GRPC_CLOSURE_CREATE(got_port_from_server, &pr, grpc_schedule_on_exec_ctx), |
| &pr.response); |
| grpc_resource_quota_unref_internal(&exec_ctx, resource_quota); |
| grpc_exec_ctx_flush(&exec_ctx); |
| gpr_mu_lock(pr.mu); |
| while (pr.port == -1) { |
| grpc_pollset_worker* worker = nullptr; |
| if (!GRPC_LOG_IF_ERROR( |
| "pollset_work", |
| grpc_pollset_work(&exec_ctx, grpc_polling_entity_pollset(&pr.pops), |
| &worker, |
| grpc_exec_ctx_now(&exec_ctx) + GPR_MS_PER_SEC))) { |
| pr.port = 0; |
| } |
| } |
| gpr_mu_unlock(pr.mu); |
| |
| grpc_http_response_destroy(&pr.response); |
| grpc_httpcli_context_destroy(&exec_ctx, &context); |
| grpc_pollset_shutdown(&exec_ctx, grpc_polling_entity_pollset(&pr.pops), |
| shutdown_closure); |
| grpc_exec_ctx_finish(&exec_ctx); |
| grpc_shutdown(); |
| |
| return pr.port; |
| } |
| |
| #endif // GRPC_TEST_PICK_PORT |