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/*
*
* 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 "src/core/lib/channel/channelz.h"
#include <string.h>
#include <string>
#include <grpc/grpc.h>
#include <grpc/impl/propagation_bits.h>
#include <grpc/slice.h>
#include <grpc/status.h>
#include <grpc/support/log.h>
#include <grpc/support/time.h>
#include "src/core/lib/channel/channel_args.h"
#include "src/core/lib/gpr/useful.h"
#include "src/core/lib/surface/channel.h"
#include "src/core/lib/surface/server.h"
#include "test/core/end2end/cq_verifier.h"
#include "test/core/end2end/end2end_tests.h"
#include "test/core/util/test_config.h"
static void* tag(intptr_t t) { return reinterpret_cast<void*>(t); }
static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
const char* test_name,
grpc_channel_args* client_args,
grpc_channel_args* server_args) {
grpc_end2end_test_fixture f;
gpr_log(GPR_INFO, "Running test: %s/%s", test_name, config.name);
f = config.create_fixture(client_args, server_args);
config.init_server(&f, server_args);
config.init_client(&f, client_args);
return f;
}
static gpr_timespec n_seconds_from_now(int n) {
return grpc_timeout_seconds_to_deadline(n);
}
static gpr_timespec five_seconds_from_now(void) {
return n_seconds_from_now(5);
}
static void drain_cq(grpc_completion_queue* cq) {
grpc_event ev;
do {
ev = grpc_completion_queue_next(cq, five_seconds_from_now(), nullptr);
} while (ev.type != GRPC_QUEUE_SHUTDOWN);
}
static void shutdown_server(grpc_end2end_test_fixture* f) {
if (!f->server) return;
grpc_server_shutdown_and_notify(f->server, f->cq, tag(1000));
grpc_event ev;
do {
ev = grpc_completion_queue_next(f->cq, grpc_timeout_seconds_to_deadline(5),
nullptr);
} while (ev.type != GRPC_OP_COMPLETE || ev.tag != tag(1000));
grpc_server_destroy(f->server);
f->server = nullptr;
}
static void shutdown_client(grpc_end2end_test_fixture* f) {
if (!f->client) return;
grpc_channel_destroy(f->client);
f->client = nullptr;
}
static void end_test(grpc_end2end_test_fixture* f) {
shutdown_server(f);
shutdown_client(f);
grpc_completion_queue_shutdown(f->cq);
drain_cq(f->cq);
grpc_completion_queue_destroy(f->cq);
}
static void run_one_request(grpc_end2end_test_config /*config*/,
grpc_end2end_test_fixture f,
bool request_is_success) {
grpc_call* c;
grpc_call* s;
grpc_core::CqVerifier cqv(f.cq);
grpc_op ops[6];
grpc_op* op;
grpc_metadata_array initial_metadata_recv;
grpc_metadata_array trailing_metadata_recv;
grpc_metadata_array request_metadata_recv;
grpc_call_details call_details;
grpc_status_code status;
grpc_call_error error;
grpc_slice details;
int was_cancelled = 2;
gpr_timespec deadline = five_seconds_from_now();
c = grpc_channel_create_call(f.client, nullptr, GRPC_PROPAGATE_DEFAULTS, f.cq,
grpc_slice_from_static_string("/foo"), nullptr,
deadline, nullptr);
GPR_ASSERT(c);
grpc_metadata_array_init(&initial_metadata_recv);
grpc_metadata_array_init(&trailing_metadata_recv);
grpc_metadata_array_init(&request_metadata_recv);
grpc_call_details_init(&call_details);
memset(ops, 0, sizeof(ops));
op = ops;
op->op = GRPC_OP_SEND_INITIAL_METADATA;
op->data.send_initial_metadata.count = 0;
op->flags = 0;
op->reserved = nullptr;
op++;
op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
op->flags = 0;
op->reserved = nullptr;
op++;
op->op = GRPC_OP_RECV_INITIAL_METADATA;
op->data.recv_initial_metadata.recv_initial_metadata = &initial_metadata_recv;
op->flags = 0;
op->reserved = nullptr;
op++;
op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
op->data.recv_status_on_client.status = &status;
op->data.recv_status_on_client.status_details = &details;
op->data.recv_status_on_client.error_string = nullptr;
op->flags = 0;
op->reserved = nullptr;
op++;
error = grpc_call_start_batch(c, ops, static_cast<size_t>(op - ops), tag(1),
nullptr);
GPR_ASSERT(GRPC_CALL_OK == error);
error =
grpc_server_request_call(f.server, &s, &call_details,
&request_metadata_recv, f.cq, f.cq, tag(101));
GPR_ASSERT(GRPC_CALL_OK == error);
cqv.Expect(tag(101), true);
cqv.Verify();
memset(ops, 0, sizeof(ops));
op = ops;
op->op = GRPC_OP_SEND_INITIAL_METADATA;
op->data.send_initial_metadata.count = 0;
op->flags = 0;
op->reserved = nullptr;
op++;
op->op = GRPC_OP_SEND_STATUS_FROM_SERVER;
op->data.send_status_from_server.trailing_metadata_count = 0;
op->data.send_status_from_server.status =
request_is_success ? GRPC_STATUS_OK : GRPC_STATUS_UNIMPLEMENTED;
grpc_slice status_details = grpc_slice_from_static_string("xyz");
op->data.send_status_from_server.status_details = &status_details;
op->flags = 0;
op->reserved = nullptr;
op++;
op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
op->data.recv_close_on_server.cancelled = &was_cancelled;
op->flags = 0;
op->reserved = nullptr;
op++;
error = grpc_call_start_batch(s, ops, static_cast<size_t>(op - ops), tag(102),
nullptr);
GPR_ASSERT(GRPC_CALL_OK == error);
cqv.Expect(tag(102), true);
cqv.Expect(tag(1), true);
cqv.Verify();
GPR_ASSERT(0 == grpc_slice_str_cmp(details, "xyz"));
GPR_ASSERT(0 == grpc_slice_str_cmp(call_details.method, "/foo"));
grpc_slice_unref(details);
grpc_metadata_array_destroy(&initial_metadata_recv);
grpc_metadata_array_destroy(&trailing_metadata_recv);
grpc_metadata_array_destroy(&request_metadata_recv);
grpc_call_details_destroy(&call_details);
grpc_call_unref(c);
grpc_call_unref(s);
}
static void test_channelz(grpc_end2end_test_config config) {
grpc_end2end_test_fixture f;
grpc_arg arg[] = {
grpc_channel_arg_integer_create(
const_cast<char*>(GRPC_ARG_MAX_CHANNEL_TRACE_EVENT_MEMORY_PER_NODE),
0),
grpc_channel_arg_integer_create(
const_cast<char*>(GRPC_ARG_ENABLE_CHANNELZ), true)};
grpc_channel_args args = {GPR_ARRAY_SIZE(arg), arg};
f = begin_test(config, "test_channelz", &args, &args);
grpc_core::channelz::ChannelNode* channelz_channel =
grpc_channel_get_channelz_node(f.client);
GPR_ASSERT(channelz_channel != nullptr);
grpc_core::channelz::ServerNode* channelz_server =
grpc_core::Server::FromC(f.server)->channelz_node();
GPR_ASSERT(channelz_server != nullptr);
std::string json = channelz_channel->RenderJsonString();
// nothing is present yet
GPR_ASSERT(json.find("\"callsStarted\"") == json.npos);
GPR_ASSERT(json.find("\"callsFailed\"") == json.npos);
GPR_ASSERT(json.find("\"callsSucceeded\"") == json.npos);
// one successful request
run_one_request(config, f, true);
json = channelz_channel->RenderJsonString();
GPR_ASSERT(json.find("\"callsStarted\":\"1\"") != json.npos);
GPR_ASSERT(json.find("\"callsSucceeded\":\"1\"") != json.npos);
// one failed request
run_one_request(config, f, false);
json = channelz_channel->RenderJsonString();
GPR_ASSERT(json.find("\"callsStarted\":\"2\"") != json.npos);
GPR_ASSERT(json.find("\"callsFailed\":\"1\"") != json.npos);
GPR_ASSERT(json.find("\"callsSucceeded\":\"1\"") != json.npos);
// channel tracing is not enabled, so these should not be preset.
GPR_ASSERT(json.find("\"trace\"") == json.npos);
GPR_ASSERT(json.find("\"description\":\"Channel created\"") == json.npos);
GPR_ASSERT(json.find("\"severity\":\"CT_INFO\"") == json.npos);
json = channelz_server->RenderJsonString();
GPR_ASSERT(json.find("\"callsStarted\":\"2\"") != json.npos);
GPR_ASSERT(json.find("\"callsFailed\":\"1\"") != json.npos);
GPR_ASSERT(json.find("\"callsSucceeded\":\"1\"") != json.npos);
// channel tracing is not enabled, so these should not be preset.
GPR_ASSERT(json.find("\"trace\"") == json.npos);
GPR_ASSERT(json.find("\"description\":\"Channel created\"") == json.npos);
GPR_ASSERT(json.find("\"severity\":\"CT_INFO\"") == json.npos);
json = channelz_server->RenderServerSockets(0, 100);
GPR_ASSERT(json.find("\"end\":true") != json.npos);
end_test(&f);
config.tear_down_data(&f);
}
static void test_channelz_with_channel_trace(grpc_end2end_test_config config) {
grpc_end2end_test_fixture f;
grpc_arg arg[] = {
grpc_channel_arg_integer_create(
const_cast<char*>(GRPC_ARG_MAX_CHANNEL_TRACE_EVENT_MEMORY_PER_NODE),
1024 * 1024),
grpc_channel_arg_integer_create(
const_cast<char*>(GRPC_ARG_ENABLE_CHANNELZ), true)};
grpc_channel_args args = {GPR_ARRAY_SIZE(arg), arg};
f = begin_test(config, "test_channelz_with_channel_trace", &args, &args);
grpc_core::channelz::ChannelNode* channelz_channel =
grpc_channel_get_channelz_node(f.client);
GPR_ASSERT(channelz_channel != nullptr);
grpc_core::channelz::ServerNode* channelz_server =
grpc_core::Server::FromC(f.server)->channelz_node();
GPR_ASSERT(channelz_server != nullptr);
run_one_request(config, f, true);
std::string json = channelz_channel->RenderJsonString();
GPR_ASSERT(json.find("\"trace\"") != json.npos);
GPR_ASSERT(json.find("\"description\":\"Channel created\"") != json.npos);
GPR_ASSERT(json.find("\"severity\":\"CT_INFO\"") != json.npos);
json = channelz_server->RenderJsonString();
GPR_ASSERT(json.find("\"trace\"") != json.npos);
GPR_ASSERT(json.find("\"description\":\"Server created\"") != json.npos);
GPR_ASSERT(json.find("\"severity\":\"CT_INFO\"") != json.npos);
end_test(&f);
config.tear_down_data(&f);
}
static void test_channelz_disabled(grpc_end2end_test_config config) {
grpc_end2end_test_fixture f;
grpc_arg arg[] = {
grpc_channel_arg_integer_create(
const_cast<char*>(GRPC_ARG_MAX_CHANNEL_TRACE_EVENT_MEMORY_PER_NODE),
0),
grpc_channel_arg_integer_create(
const_cast<char*>(GRPC_ARG_ENABLE_CHANNELZ), false)};
grpc_channel_args args = {GPR_ARRAY_SIZE(arg), arg};
f = begin_test(config, "test_channelz_disabled", &args, &args);
grpc_core::channelz::ChannelNode* channelz_channel =
grpc_channel_get_channelz_node(f.client);
GPR_ASSERT(channelz_channel == nullptr);
// one successful request
run_one_request(config, f, true);
GPR_ASSERT(channelz_channel == nullptr);
end_test(&f);
config.tear_down_data(&f);
}
void channelz(grpc_end2end_test_config config) {
test_channelz(config);
test_channelz_with_channel_trace(config);
test_channelz_disabled(config);
}
void channelz_pre_init(void) {}