| /* |
| * |
| * Copyright 2015, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #include <string.h> |
| |
| #include <grpc/grpc.h> |
| #include <grpc/support/alloc.h> |
| |
| #include "src/core/ext/client_config/resolver_registry.h" |
| #include "src/core/lib/iomgr/resolve_address.h" |
| #include "src/core/lib/iomgr/timer.h" |
| #include "test/core/util/test_config.h" |
| |
| static gpr_mu g_mu; |
| static bool g_fail_resolution = true; |
| |
| static grpc_error *my_resolve_address(const char *name, const char *addr, |
| grpc_resolved_addresses **addrs) { |
| gpr_mu_lock(&g_mu); |
| GPR_ASSERT(0 == strcmp("test", name)); |
| if (g_fail_resolution) { |
| g_fail_resolution = false; |
| gpr_mu_unlock(&g_mu); |
| return GRPC_ERROR_CREATE("Forced Failure"); |
| } else { |
| gpr_mu_unlock(&g_mu); |
| *addrs = gpr_malloc(sizeof(**addrs)); |
| (*addrs)->naddrs = 1; |
| (*addrs)->addrs = gpr_malloc(sizeof(*(*addrs)->addrs)); |
| (*addrs)->addrs[0].len = 123; |
| return GRPC_ERROR_NONE; |
| } |
| } |
| |
| static grpc_resolver *create_resolver(const char *name) { |
| grpc_resolver_factory *factory = grpc_resolver_factory_lookup("dns"); |
| grpc_uri *uri = grpc_uri_parse(name, 0); |
| GPR_ASSERT(uri); |
| grpc_resolver_args args; |
| memset(&args, 0, sizeof(args)); |
| args.uri = uri; |
| grpc_resolver *resolver = |
| grpc_resolver_factory_create_resolver(factory, &args); |
| grpc_resolver_factory_unref(factory); |
| grpc_uri_destroy(uri); |
| return resolver; |
| } |
| |
| static void on_done(grpc_exec_ctx *exec_ctx, void *ev, grpc_error *error) { |
| gpr_event_set(ev, (void *)1); |
| } |
| |
| // interleave waiting for an event with a timer check |
| static bool wait_loop(int deadline_seconds, gpr_event *ev) { |
| while (deadline_seconds) { |
| gpr_log(GPR_DEBUG, "Test: waiting for %d more seconds", deadline_seconds); |
| if (gpr_event_wait(ev, GRPC_TIMEOUT_SECONDS_TO_DEADLINE(1))) return true; |
| deadline_seconds--; |
| |
| grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
| grpc_timer_check(&exec_ctx, gpr_now(GPR_CLOCK_MONOTONIC), NULL); |
| grpc_exec_ctx_finish(&exec_ctx); |
| } |
| return false; |
| } |
| |
| int main(int argc, char **argv) { |
| grpc_test_init(argc, argv); |
| |
| grpc_init(); |
| gpr_mu_init(&g_mu); |
| grpc_blocking_resolve_address = my_resolve_address; |
| |
| grpc_resolver *resolver = create_resolver("dns:test"); |
| |
| grpc_resolver_result *result = (grpc_resolver_result *)1; |
| |
| grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; |
| gpr_event ev1; |
| gpr_event_init(&ev1); |
| grpc_resolver_next(&exec_ctx, resolver, &result, |
| grpc_closure_create(on_done, &ev1)); |
| grpc_exec_ctx_flush(&exec_ctx); |
| GPR_ASSERT(wait_loop(5, &ev1)); |
| GPR_ASSERT(result == NULL); |
| |
| gpr_event ev2; |
| gpr_event_init(&ev2); |
| grpc_resolver_next(&exec_ctx, resolver, &result, |
| grpc_closure_create(on_done, &ev2)); |
| grpc_exec_ctx_flush(&exec_ctx); |
| GPR_ASSERT(wait_loop(30, &ev2)); |
| GPR_ASSERT(result != NULL); |
| |
| grpc_resolver_result_unref(&exec_ctx, result); |
| GRPC_RESOLVER_UNREF(&exec_ctx, resolver, "test"); |
| grpc_exec_ctx_finish(&exec_ctx); |
| |
| grpc_shutdown(); |
| gpr_mu_destroy(&g_mu); |
| } |