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logging-test.cc
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logging-test.cc
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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you 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.
//
// The following only applies to changes made to this file as part of YugaByte development.
//
// Portions Copyright (c) YugaByte, Inc.
//
// 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 <string>
#include <vector>
#include <glog/logging.h>
#include <gmock/gmock.h>
#include "yb/util/flags.h"
#include "yb/util/logging_test_util.h"
#include "yb/util/logging.h"
#include "yb/util/monotime.h"
#include "yb/util/test_macros.h"
#include "yb/util/test_util.h"
DECLARE_string(vmodule);
using std::string;
using std::vector;
// LoggingTest is not actually an integration test, but we put it here, so it will be linked with
// all libraries used for YB cluster processes, because static object initialization in thse
// libraries could cause logging issues.
// For example: https://github.com/yugabyte/yugabyte-db/issues/3176
namespace yb {
// Test the YB_LOG_EVERY_N_SECS(...) macro.
TEST(LoggingTest, TestThrottledLogging) {
StringVectorSink sink;
ScopedRegisterSink srs(&sink);
for (int i = 0; i < 10000; i++) {
YB_LOG_EVERY_N_SECS(INFO, 1) << "test" << THROTTLE_MSG;
SleepFor(MonoDelta::FromMilliseconds(1));
if (sink.logged_msgs().size() >= 2) break;
}
const vector<string>& msgs = sink.logged_msgs();
ASSERT_GE(msgs.size(), 2);
// The first log line shouldn't have a suppression count.
EXPECT_THAT(msgs[0], testing::ContainsRegex("test$"));
// The second one should have suppressed at least three digits worth of log messages.
EXPECT_THAT(msgs[1], testing::ContainsRegex("\\[suppressed [0-9]{3,} similar messages\\]"));
// Just compilation check.
YB_LOG_EVERY_N_SECS(INFO, 1) << "test" << THROTTLE_MSG;
YB_LOG_EVERY_N_SECS(INFO, 1) << "test" << THROTTLE_MSG;
}
TEST(LoggingTest, VModule) {
google::FlagSaver flag_saver;
google::SetVLOGLevel("logging-test", 1);
ASSERT_TRUE(VLOG_IS_ON(1));
constexpr auto kPattern = "vmodule-test";
StringVectorSink sink;
ScopedRegisterSink srs(&sink);
VLOG(1) << kPattern;
const vector<string>& msgs = sink.logged_msgs();
ASSERT_GE(msgs.size(), 1);
EXPECT_THAT(msgs[0], testing::HasSubstr(kPattern));
}
} // namespace yb