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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
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550 lines
19 KiB
550 lines
19 KiB
/* |
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* |
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* Copyright 2017 gRPC authors. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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* |
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*/ |
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#include <stdlib.h> |
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#include <string.h> |
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#include <gtest/gtest.h> |
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#include <grpc/support/alloc.h> |
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#include <grpc/support/log.h> |
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#include "src/core/lib/channel/channel_trace.h" |
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#include "src/core/lib/channel/channelz.h" |
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#include "src/core/lib/channel/channelz_registry.h" |
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#include "src/core/lib/gpr/useful.h" |
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#include "src/core/lib/iomgr/exec_ctx.h" |
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#include "src/core/lib/json/json.h" |
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#include "src/core/lib/surface/channel.h" |
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#include "src/core/lib/surface/server.h" |
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#include "test/core/util/test_config.h" |
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#include "test/cpp/util/channel_trace_proto_helper.h" |
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#include <grpc/support/string_util.h> |
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#include <stdlib.h> |
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#include <string.h> |
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namespace grpc_core { |
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namespace channelz { |
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namespace testing { |
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// testing peer to access channel internals |
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class CallCountingHelperPeer { |
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public: |
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explicit CallCountingHelperPeer(CallCountingHelper* node) : node_(node) {} |
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grpc_millis last_call_started_millis() const { |
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CallCountingHelper::CounterData data; |
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node_->CollectData(&data); |
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gpr_timespec ts = gpr_cycle_counter_to_time(data.last_call_started_cycle); |
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return grpc_timespec_to_millis_round_up(ts); |
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} |
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private: |
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CallCountingHelper* node_; |
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}; |
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namespace { |
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grpc_json* GetJsonChild(grpc_json* parent, const char* key) { |
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EXPECT_NE(parent, nullptr); |
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for (grpc_json* child = parent->child; child != nullptr; |
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child = child->next) { |
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if (child->key != nullptr && strcmp(child->key, key) == 0) return child; |
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} |
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return nullptr; |
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} |
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void ValidateJsonArraySize(grpc_json* json, const char* key, |
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size_t expected_size) { |
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grpc_json* arr = GetJsonChild(json, key); |
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if (expected_size == 0) { |
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ASSERT_EQ(arr, nullptr); |
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return; |
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} |
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ASSERT_NE(arr, nullptr); |
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ASSERT_EQ(arr->type, GRPC_JSON_ARRAY); |
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size_t count = 0; |
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for (grpc_json* child = arr->child; child != nullptr; child = child->next) { |
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++count; |
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} |
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EXPECT_EQ(count, expected_size); |
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} |
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std::vector<intptr_t> GetUuidListFromArray(grpc_json* arr) { |
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EXPECT_EQ(arr->type, GRPC_JSON_ARRAY); |
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std::vector<intptr_t> uuids; |
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for (grpc_json* child = arr->child; child != nullptr; child = child->next) { |
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grpc_json* it = GetJsonChild(child, "ref"); |
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EXPECT_NE(it, nullptr); |
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it = GetJsonChild(it, "channelId"); |
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EXPECT_NE(it, nullptr); |
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uuids.push_back(atoi(it->value)); |
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} |
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return uuids; |
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} |
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void ValidateGetTopChannels(size_t expected_channels) { |
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char* json_str = ChannelzRegistry::GetTopChannels(0); |
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grpc::testing::ValidateGetTopChannelsResponseProtoJsonTranslation(json_str); |
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grpc_json* parsed_json = grpc_json_parse_string(json_str); |
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// This check will naturally have to change when we support pagination. |
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// tracked: https://github.com/grpc/grpc/issues/16019. |
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ValidateJsonArraySize(parsed_json, "channel", expected_channels); |
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grpc_json* end = GetJsonChild(parsed_json, "end"); |
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ASSERT_NE(end, nullptr); |
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EXPECT_EQ(end->type, GRPC_JSON_TRUE); |
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grpc_json_destroy(parsed_json); |
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gpr_free(json_str); |
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// also check that the core API formats this correctly |
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char* core_api_json_str = grpc_channelz_get_top_channels(0); |
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grpc::testing::ValidateGetTopChannelsResponseProtoJsonTranslation( |
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core_api_json_str); |
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gpr_free(core_api_json_str); |
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} |
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void ValidateGetServers(size_t expected_servers) { |
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char* json_str = ChannelzRegistry::GetServers(0); |
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grpc::testing::ValidateGetServersResponseProtoJsonTranslation(json_str); |
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grpc_json* parsed_json = grpc_json_parse_string(json_str); |
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// This check will naturally have to change when we support pagination. |
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// tracked: https://github.com/grpc/grpc/issues/16019. |
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ValidateJsonArraySize(parsed_json, "server", expected_servers); |
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grpc_json* end = GetJsonChild(parsed_json, "end"); |
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ASSERT_NE(end, nullptr); |
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EXPECT_EQ(end->type, GRPC_JSON_TRUE); |
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grpc_json_destroy(parsed_json); |
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gpr_free(json_str); |
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// also check that the core API formats this correctly |
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char* core_api_json_str = grpc_channelz_get_servers(0); |
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grpc::testing::ValidateGetServersResponseProtoJsonTranslation( |
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core_api_json_str); |
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gpr_free(core_api_json_str); |
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} |
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class ChannelFixture { |
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public: |
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ChannelFixture(int max_tracer_event_memory = 0) { |
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grpc_arg client_a[] = { |
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grpc_channel_arg_integer_create( |
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const_cast<char*>(GRPC_ARG_MAX_CHANNEL_TRACE_EVENT_MEMORY_PER_NODE), |
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max_tracer_event_memory), |
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grpc_channel_arg_integer_create( |
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const_cast<char*>(GRPC_ARG_ENABLE_CHANNELZ), true)}; |
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grpc_channel_args client_args = {GPR_ARRAY_SIZE(client_a), client_a}; |
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channel_ = |
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grpc_insecure_channel_create("fake_target", &client_args, nullptr); |
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} |
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~ChannelFixture() { grpc_channel_destroy(channel_); } |
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grpc_channel* channel() { return channel_; } |
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private: |
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grpc_channel* channel_; |
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}; |
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class ServerFixture { |
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public: |
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explicit ServerFixture(int max_tracer_event_memory = 0) { |
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grpc_arg server_a[] = { |
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grpc_channel_arg_integer_create( |
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const_cast<char*>(GRPC_ARG_MAX_CHANNEL_TRACE_EVENT_MEMORY_PER_NODE), |
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max_tracer_event_memory), |
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grpc_channel_arg_integer_create( |
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const_cast<char*>(GRPC_ARG_ENABLE_CHANNELZ), true), |
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}; |
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grpc_channel_args server_args = {GPR_ARRAY_SIZE(server_a), server_a}; |
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server_ = grpc_server_create(&server_args, nullptr); |
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} |
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~ServerFixture() { grpc_server_destroy(server_); } |
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grpc_server* server() const { return server_; } |
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private: |
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grpc_server* server_; |
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}; |
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struct validate_channel_data_args { |
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int64_t calls_started; |
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int64_t calls_failed; |
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int64_t calls_succeeded; |
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}; |
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void ValidateChildInteger(grpc_json* json, int64_t expect, const char* key) { |
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grpc_json* gotten_json = GetJsonChild(json, key); |
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if (expect == 0) { |
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ASSERT_EQ(gotten_json, nullptr); |
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return; |
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} |
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ASSERT_NE(gotten_json, nullptr); |
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int64_t gotten_number = (int64_t)strtol(gotten_json->value, nullptr, 0); |
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EXPECT_EQ(gotten_number, expect); |
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} |
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void ValidateCounters(char* json_str, validate_channel_data_args args) { |
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grpc_json* json = grpc_json_parse_string(json_str); |
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ASSERT_NE(json, nullptr); |
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grpc_json* data = GetJsonChild(json, "data"); |
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ValidateChildInteger(data, args.calls_started, "callsStarted"); |
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ValidateChildInteger(data, args.calls_failed, "callsFailed"); |
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ValidateChildInteger(data, args.calls_succeeded, "callsSucceeded"); |
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grpc_json_destroy(json); |
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} |
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void ValidateChannel(ChannelNode* channel, validate_channel_data_args args) { |
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char* json_str = channel->RenderJsonString(); |
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grpc::testing::ValidateChannelProtoJsonTranslation(json_str); |
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ValidateCounters(json_str, args); |
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gpr_free(json_str); |
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// also check that the core API formats this the correct way |
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char* core_api_json_str = grpc_channelz_get_channel(channel->uuid()); |
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grpc::testing::ValidateGetChannelResponseProtoJsonTranslation( |
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core_api_json_str); |
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gpr_free(core_api_json_str); |
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} |
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void ValidateServer(ServerNode* server, validate_channel_data_args args) { |
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char* json_str = server->RenderJsonString(); |
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grpc::testing::ValidateServerProtoJsonTranslation(json_str); |
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ValidateCounters(json_str, args); |
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gpr_free(json_str); |
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// also check that the core API formats this the correct way |
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char* core_api_json_str = grpc_channelz_get_server(server->uuid()); |
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grpc::testing::ValidateGetServerResponseProtoJsonTranslation( |
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core_api_json_str); |
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gpr_free(core_api_json_str); |
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} |
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grpc_millis GetLastCallStartedMillis(CallCountingHelper* channel) { |
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CallCountingHelperPeer peer(channel); |
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return peer.last_call_started_millis(); |
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} |
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void ChannelzSleep(int64_t sleep_us) { |
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gpr_sleep_until(gpr_time_add(gpr_now(GPR_CLOCK_REALTIME), |
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gpr_time_from_micros(sleep_us, GPR_TIMESPAN))); |
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grpc_core::ExecCtx::Get()->InvalidateNow(); |
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} |
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} // anonymous namespace |
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class ChannelzChannelTest : public ::testing::TestWithParam<size_t> {}; |
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TEST_P(ChannelzChannelTest, BasicChannel) { |
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grpc_core::ExecCtx exec_ctx; |
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ChannelFixture channel(GetParam()); |
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ChannelNode* channelz_channel = |
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grpc_channel_get_channelz_node(channel.channel()); |
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ValidateChannel(channelz_channel, {0, 0, 0}); |
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} |
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TEST(ChannelzChannelTest, ChannelzDisabled) { |
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grpc_core::ExecCtx exec_ctx; |
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// explicitly disable channelz |
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grpc_arg arg[] = { |
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grpc_channel_arg_integer_create( |
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const_cast<char*>(GRPC_ARG_MAX_CHANNEL_TRACE_EVENT_MEMORY_PER_NODE), |
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0), |
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grpc_channel_arg_integer_create( |
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const_cast<char*>(GRPC_ARG_ENABLE_CHANNELZ), false)}; |
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grpc_channel_args args = {GPR_ARRAY_SIZE(arg), arg}; |
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grpc_channel* channel = |
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grpc_insecure_channel_create("fake_target", &args, nullptr); |
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ChannelNode* channelz_channel = grpc_channel_get_channelz_node(channel); |
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ASSERT_EQ(channelz_channel, nullptr); |
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grpc_channel_destroy(channel); |
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} |
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TEST_P(ChannelzChannelTest, BasicChannelAPIFunctionality) { |
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grpc_core::ExecCtx exec_ctx; |
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ChannelFixture channel(GetParam()); |
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ChannelNode* channelz_channel = |
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grpc_channel_get_channelz_node(channel.channel()); |
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channelz_channel->RecordCallStarted(); |
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channelz_channel->RecordCallFailed(); |
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channelz_channel->RecordCallSucceeded(); |
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ValidateChannel(channelz_channel, {1, 1, 1}); |
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channelz_channel->RecordCallStarted(); |
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channelz_channel->RecordCallFailed(); |
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channelz_channel->RecordCallSucceeded(); |
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channelz_channel->RecordCallStarted(); |
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channelz_channel->RecordCallFailed(); |
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channelz_channel->RecordCallSucceeded(); |
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ValidateChannel(channelz_channel, {3, 3, 3}); |
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} |
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TEST_P(ChannelzChannelTest, LastCallStartedMillis) { |
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grpc_core::ExecCtx exec_ctx; |
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CallCountingHelper counter; |
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// start a call to set the last call started timestamp |
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counter.RecordCallStarted(); |
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grpc_millis millis1 = GetLastCallStartedMillis(&counter); |
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// time gone by should not affect the timestamp |
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ChannelzSleep(100); |
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grpc_millis millis2 = GetLastCallStartedMillis(&counter); |
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EXPECT_EQ(millis1, millis2); |
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// calls succeeded or failed should not affect the timestamp |
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ChannelzSleep(100); |
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counter.RecordCallFailed(); |
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counter.RecordCallSucceeded(); |
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grpc_millis millis3 = GetLastCallStartedMillis(&counter); |
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EXPECT_EQ(millis1, millis3); |
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// another call started should affect the timestamp |
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// sleep for extra long to avoid flakes (since we cache Now()) |
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ChannelzSleep(5000); |
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counter.RecordCallStarted(); |
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grpc_millis millis4 = GetLastCallStartedMillis(&counter); |
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EXPECT_NE(millis1, millis4); |
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} |
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class ChannelzRegistryBasedTest : public ::testing::TestWithParam<size_t> { |
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protected: |
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// ensure we always have a fresh registry for tests. |
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void SetUp() override { |
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ChannelzRegistry::Shutdown(); |
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ChannelzRegistry::Init(); |
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} |
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void TearDown() override { |
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ChannelzRegistry::Shutdown(); |
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ChannelzRegistry::Init(); |
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} |
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}; |
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TEST_F(ChannelzRegistryBasedTest, BasicGetTopChannelsTest) { |
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grpc_core::ExecCtx exec_ctx; |
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ChannelFixture channel; |
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ValidateGetTopChannels(1); |
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} |
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TEST_F(ChannelzRegistryBasedTest, NoChannelsTest) { |
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grpc_core::ExecCtx exec_ctx; |
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ValidateGetTopChannels(0); |
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} |
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TEST_F(ChannelzRegistryBasedTest, ManyChannelsTest) { |
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grpc_core::ExecCtx exec_ctx; |
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ChannelFixture channels[10]; |
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(void)channels; // suppress unused variable error |
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ValidateGetTopChannels(10); |
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} |
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TEST_F(ChannelzRegistryBasedTest, GetTopChannelsPagination) { |
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grpc_core::ExecCtx exec_ctx; |
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// this is over the pagination limit. |
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ChannelFixture channels[150]; |
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(void)channels; // suppress unused variable error |
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char* json_str = ChannelzRegistry::GetTopChannels(0); |
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grpc::testing::ValidateGetTopChannelsResponseProtoJsonTranslation(json_str); |
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grpc_json* parsed_json = grpc_json_parse_string(json_str); |
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// 100 is the pagination limit. |
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ValidateJsonArraySize(parsed_json, "channel", 100); |
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grpc_json* end = GetJsonChild(parsed_json, "end"); |
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EXPECT_EQ(end, nullptr); |
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grpc_json_destroy(parsed_json); |
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gpr_free(json_str); |
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// Now we get the rest |
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json_str = ChannelzRegistry::GetTopChannels(101); |
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grpc::testing::ValidateGetTopChannelsResponseProtoJsonTranslation(json_str); |
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parsed_json = grpc_json_parse_string(json_str); |
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ValidateJsonArraySize(parsed_json, "channel", 50); |
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end = GetJsonChild(parsed_json, "end"); |
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ASSERT_NE(end, nullptr); |
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EXPECT_EQ(end->type, GRPC_JSON_TRUE); |
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grpc_json_destroy(parsed_json); |
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gpr_free(json_str); |
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} |
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TEST_F(ChannelzRegistryBasedTest, GetTopChannelsUuidCheck) { |
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const intptr_t kNumChannels = 50; |
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grpc_core::ExecCtx exec_ctx; |
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ChannelFixture channels[kNumChannels]; |
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(void)channels; // suppress unused variable error |
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char* json_str = ChannelzRegistry::GetTopChannels(0); |
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grpc_json* parsed_json = grpc_json_parse_string(json_str); |
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ValidateJsonArraySize(parsed_json, "channel", kNumChannels); |
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grpc_json* json_channels = GetJsonChild(parsed_json, "channel"); |
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std::vector<intptr_t> uuids = GetUuidListFromArray(json_channels); |
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for (int i = 0; i < kNumChannels; ++i) { |
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EXPECT_EQ(i + 1, uuids[i]); |
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} |
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grpc_json_destroy(parsed_json); |
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gpr_free(json_str); |
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} |
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TEST_F(ChannelzRegistryBasedTest, GetTopChannelsMiddleUuidCheck) { |
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const intptr_t kNumChannels = 50; |
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const intptr_t kMidQuery = 40; |
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grpc_core::ExecCtx exec_ctx; |
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ChannelFixture channels[kNumChannels]; |
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(void)channels; // suppress unused variable error |
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// only query for the end of the channels |
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char* json_str = ChannelzRegistry::GetTopChannels(kMidQuery); |
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grpc_json* parsed_json = grpc_json_parse_string(json_str); |
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ValidateJsonArraySize(parsed_json, "channel", kNumChannels - kMidQuery + 1); |
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grpc_json* json_channels = GetJsonChild(parsed_json, "channel"); |
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std::vector<intptr_t> uuids = GetUuidListFromArray(json_channels); |
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for (size_t i = 0; i < uuids.size(); ++i) { |
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EXPECT_EQ(static_cast<intptr_t>(kMidQuery + i), uuids[i]); |
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} |
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grpc_json_destroy(parsed_json); |
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gpr_free(json_str); |
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} |
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TEST_F(ChannelzRegistryBasedTest, GetTopChannelsNoHitUuid) { |
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grpc_core::ExecCtx exec_ctx; |
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ChannelFixture pre_channels[40]; // will take uuid[1, 40] |
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(void)pre_channels; // suppress unused variable error |
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ServerFixture servers[10]; // will take uuid[41, 50] |
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(void)servers; // suppress unused variable error |
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ChannelFixture channels[10]; // will take uuid[51, 60] |
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(void)channels; // suppress unused variable error |
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// query in the middle of the server channels |
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char* json_str = ChannelzRegistry::GetTopChannels(45); |
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grpc_json* parsed_json = grpc_json_parse_string(json_str); |
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ValidateJsonArraySize(parsed_json, "channel", 10); |
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grpc_json* json_channels = GetJsonChild(parsed_json, "channel"); |
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std::vector<intptr_t> uuids = GetUuidListFromArray(json_channels); |
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for (size_t i = 0; i < uuids.size(); ++i) { |
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EXPECT_EQ(static_cast<intptr_t>(51 + i), uuids[i]); |
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} |
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grpc_json_destroy(parsed_json); |
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gpr_free(json_str); |
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} |
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TEST_F(ChannelzRegistryBasedTest, GetTopChannelsMoreGaps) { |
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grpc_core::ExecCtx exec_ctx; |
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ChannelFixture channel_with_uuid1; |
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{ ServerFixture channel_with_uuid2; } |
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ChannelFixture channel_with_uuid3; |
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{ ServerFixture server_with_uuid4; } |
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ChannelFixture channel_with_uuid5; |
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// Current state of list: [1, NULL, 3, NULL, 5] |
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char* json_str = ChannelzRegistry::GetTopChannels(2); |
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grpc_json* parsed_json = grpc_json_parse_string(json_str); |
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ValidateJsonArraySize(parsed_json, "channel", 2); |
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grpc_json* json_channels = GetJsonChild(parsed_json, "channel"); |
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std::vector<intptr_t> uuids = GetUuidListFromArray(json_channels); |
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EXPECT_EQ(static_cast<intptr_t>(3), uuids[0]); |
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EXPECT_EQ(static_cast<intptr_t>(5), uuids[1]); |
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grpc_json_destroy(parsed_json); |
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gpr_free(json_str); |
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json_str = ChannelzRegistry::GetTopChannels(4); |
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parsed_json = grpc_json_parse_string(json_str); |
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ValidateJsonArraySize(parsed_json, "channel", 1); |
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json_channels = GetJsonChild(parsed_json, "channel"); |
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uuids = GetUuidListFromArray(json_channels); |
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EXPECT_EQ(static_cast<intptr_t>(5), uuids[0]); |
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grpc_json_destroy(parsed_json); |
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gpr_free(json_str); |
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} |
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TEST_F(ChannelzRegistryBasedTest, GetTopChannelsUuidAfterCompaction) { |
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const intptr_t kLoopIterations = 50; |
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grpc_core::ExecCtx exec_ctx; |
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std::vector<UniquePtr<ChannelFixture>> even_channels; |
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{ |
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// these will delete and unregister themselves after this block. |
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std::vector<UniquePtr<ChannelFixture>> odd_channels; |
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for (int i = 0; i < kLoopIterations; i++) { |
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odd_channels.push_back(MakeUnique<ChannelFixture>()); |
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even_channels.push_back(MakeUnique<ChannelFixture>()); |
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} |
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} |
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char* json_str = ChannelzRegistry::GetTopChannels(0); |
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grpc_json* parsed_json = grpc_json_parse_string(json_str); |
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ValidateJsonArraySize(parsed_json, "channel", kLoopIterations); |
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grpc_json* json_channels = GetJsonChild(parsed_json, "channel"); |
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std::vector<intptr_t> uuids = GetUuidListFromArray(json_channels); |
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for (int i = 0; i < kLoopIterations; ++i) { |
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// only the even uuids will still be present. |
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EXPECT_EQ((i + 1) * 2, uuids[i]); |
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} |
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grpc_json_destroy(parsed_json); |
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gpr_free(json_str); |
|
} |
|
|
|
TEST_F(ChannelzRegistryBasedTest, InternalChannelTest) { |
|
grpc_core::ExecCtx exec_ctx; |
|
ChannelFixture channels[10]; |
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(void)channels; // suppress unused variable error |
|
// create an internal channel |
|
grpc_arg client_a[2]; |
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client_a[0] = grpc_core::channelz::MakeParentUuidArg(1); |
|
client_a[1] = grpc_channel_arg_integer_create( |
|
const_cast<char*>(GRPC_ARG_ENABLE_CHANNELZ), true); |
|
grpc_channel_args client_args = {GPR_ARRAY_SIZE(client_a), client_a}; |
|
grpc_channel* internal_channel = |
|
grpc_insecure_channel_create("fake_target", &client_args, nullptr); |
|
// The internal channel should not be returned from the request |
|
ValidateGetTopChannels(10); |
|
grpc_channel_destroy(internal_channel); |
|
} |
|
|
|
TEST(ChannelzServerTest, BasicServerAPIFunctionality) { |
|
grpc_core::ExecCtx exec_ctx; |
|
ServerFixture server(10); |
|
ServerNode* channelz_server = grpc_server_get_channelz_node(server.server()); |
|
channelz_server->RecordCallStarted(); |
|
channelz_server->RecordCallFailed(); |
|
channelz_server->RecordCallSucceeded(); |
|
ValidateServer(channelz_server, {1, 1, 1}); |
|
channelz_server->RecordCallStarted(); |
|
channelz_server->RecordCallFailed(); |
|
channelz_server->RecordCallSucceeded(); |
|
channelz_server->RecordCallStarted(); |
|
channelz_server->RecordCallFailed(); |
|
channelz_server->RecordCallSucceeded(); |
|
ValidateServer(channelz_server, {3, 3, 3}); |
|
} |
|
|
|
TEST_F(ChannelzRegistryBasedTest, BasicGetServersTest) { |
|
grpc_core::ExecCtx exec_ctx; |
|
ServerFixture server; |
|
ValidateGetServers(1); |
|
} |
|
|
|
TEST_F(ChannelzRegistryBasedTest, NoServersTest) { |
|
grpc_core::ExecCtx exec_ctx; |
|
ValidateGetServers(0); |
|
} |
|
|
|
TEST_F(ChannelzRegistryBasedTest, ManyServersTest) { |
|
grpc_core::ExecCtx exec_ctx; |
|
ServerFixture servers[10]; |
|
(void)servers; // suppress unused variable error |
|
ValidateGetServers(10); |
|
} |
|
|
|
INSTANTIATE_TEST_CASE_P(ChannelzChannelTestSweep, ChannelzChannelTest, |
|
::testing::Values(0, 8, 64, 1024, 1024 * 1024)); |
|
|
|
} // namespace testing |
|
} // namespace channelz |
|
} // namespace grpc_core |
|
|
|
int main(int argc, char** argv) { |
|
grpc::testing::TestEnvironment env(argc, argv); |
|
grpc_init(); |
|
::testing::InitGoogleTest(&argc, argv); |
|
int ret = RUN_ALL_TESTS(); |
|
grpc_shutdown(); |
|
return ret; |
|
}
|
|
|