static void response_generator_arg_destroy(grpc_exec_ctx* exec_ctx, void* p) {
grpc_fake_resolver_response_generator_unref(
(grpc_fake_resolver_response_generator*)p);
}
static void test_fake_resolver() {
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
grpc_combiner *combiner = grpc_combiner_create(NULL);
// Create resolver.
grpc_fake_resolver_response_generator *response_generator =
grpc_fake_resolver_response_generator_create();
grpc_resolver *resolver =
build_fake_resolver(&exec_ctx, combiner, response_generator);
GPR_ASSERT(resolver != NULL);
// Setup expectations.
grpc_uri *uris[] = {grpc_uri_parse(&exec_ctx, "ipv4:10.2.1.1:1234", true),
grpc_uri_parse(&exec_ctx, "ipv4:127.0.0.1:4321", true)};
char *balancer_names[] = {"name1", "name2"};
const bool is_balancer[] = {true, false};
grpc_lb_addresses *addresses = grpc_lb_addresses_create(3, NULL);
for (size_t i = 0; i < GPR_ARRAY_SIZE(uris); ++i) {
grpc_lb_addresses_set_address_from_uri(
addresses, i, uris[i], is_balancer[i], balancer_names[i], NULL);
grpc_uri_destroy(uris[i]);
}
const grpc_arg addresses_arg =
grpc_lb_addresses_create_channel_arg(addresses);
grpc_channel_args *results =
grpc_channel_args_copy_and_add(NULL, &addresses_arg, 1);
grpc_lb_addresses_destroy(&exec_ctx, addresses);
on_resolution_arg on_res_arg;
memset(&on_res_arg, 0, sizeof(on_res_arg));
on_res_arg.expected_resolver_result = results;
grpc_closure *on_resolution = grpc_closure_create(
on_resolution_cb, &on_res_arg, grpc_combiner_scheduler(combiner, false));
// Set resolver results and trigger first resolution. on_resolution_cb
// performs the checks.
grpc_fake_resolver_response_generator_set_response(
&exec_ctx, response_generator, results);
grpc_resolver_next_locked(&exec_ctx, resolver, &on_res_arg.resolver_result,
on_resolution);
grpc_exec_ctx_flush(&exec_ctx);
GPR_ASSERT(on_res_arg.was_called);
// Setup update.
grpc_uri *uris_update[] = {
grpc_uri_parse(&exec_ctx, "ipv4:192.168.1.0:31416", true)};
char *balancer_names_update[] = {"name3"};
const bool is_balancer_update[] = {false};
grpc_lb_addresses *addresses_update = grpc_lb_addresses_create(1, NULL);
for (size_t i = 0; i < GPR_ARRAY_SIZE(uris_update); ++i) {
grpc_lb_addresses_set_address_from_uri(addresses_update, i, uris_update[i],
is_balancer_update[i],
balancer_names_update[i], NULL);
grpc_uri_destroy(uris_update[i]);
}
grpc_arg addresses_update_arg =
grpc_lb_addresses_create_channel_arg(addresses_update);
grpc_channel_args *results_update =
grpc_channel_args_copy_and_add(NULL, &addresses_update_arg, 1);
grpc_lb_addresses_destroy(&exec_ctx, addresses_update);
// Setup expectations for the update.
on_resolution_arg on_res_arg_update;
memset(&on_res_arg_update, 0, sizeof(on_res_arg_update));
on_res_arg_update.expected_resolver_result = results_update;
on_resolution = grpc_closure_create(on_resolution_cb, &on_res_arg_update,
grpc_combiner_scheduler(combiner, false));
// Set updated resolver results and trigger a second resolution.
grpc_fake_resolver_response_generator_set_response(
&exec_ctx, response_generator, results_update);
grpc_resolver_next_locked(&exec_ctx, resolver,
&on_res_arg_update.resolver_result, on_resolution);
grpc_exec_ctx_flush(&exec_ctx);
GPR_ASSERT(on_res_arg.was_called);
// Requesting a new resolution without re-senting the response shouldn't
// trigger the resolution callback.
memset(&on_res_arg, 0, sizeof(on_res_arg));
grpc_resolver_next_locked(&exec_ctx, resolver, &on_res_arg.resolver_result,
on_resolution);
grpc_exec_ctx_flush(&exec_ctx);
GPR_ASSERT(!on_res_arg.was_called);
GRPC_COMBINER_UNREF(&exec_ctx, combiner, "test_fake_resolver");
GRPC_RESOLVER_UNREF(&exec_ctx, resolver, "test_fake_resolver");
grpc_exec_ctx_finish(&exec_ctx);
grpc_fake_resolver_response_generator_unref(response_generator);
}
