| // Copyright 2016 The Bazel Authors. All rights reserved. |
| // |
| // 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. |
| |
| // This file is based off the logging work by the protobuf team |
| #include "src/main/cpp/util/logging.h" |
| |
| #include <cstdio> |
| #include <cstdlib> |
| #include <iostream> |
| #include <memory> |
| |
| namespace blaze_util { |
| |
| const char* LogLevelName(LogLevel level) { |
| static const char* level_names[] = {"INFO", "WARNING", "ERROR", "FATAL"}; |
| BAZEL_CHECK(static_cast<int>(level) < 4) |
| << "LogLevelName: level out of range, there are only 4 levels."; |
| return level_names[level]; |
| } |
| |
| namespace internal { |
| |
| static std::unique_ptr<LogHandler> log_handler_(nullptr); |
| |
| LogMessage::LogMessage(LogLevel level, const std::string& filename, int line) |
| : level_(level), filename_(filename), line_(line) {} |
| |
| #undef DECLARE_STREAM_OPERATOR |
| #define DECLARE_STREAM_OPERATOR(TYPE) \ |
| LogMessage& LogMessage::operator<<(TYPE value) { \ |
| message_ << value; \ |
| return *this; \ |
| } |
| |
| DECLARE_STREAM_OPERATOR(const std::string&) |
| DECLARE_STREAM_OPERATOR(const char*) |
| DECLARE_STREAM_OPERATOR(char) |
| DECLARE_STREAM_OPERATOR(bool) |
| DECLARE_STREAM_OPERATOR(short) |
| DECLARE_STREAM_OPERATOR(int) |
| DECLARE_STREAM_OPERATOR(unsigned int) |
| DECLARE_STREAM_OPERATOR(long) |
| DECLARE_STREAM_OPERATOR(unsigned long) |
| DECLARE_STREAM_OPERATOR(long long) |
| DECLARE_STREAM_OPERATOR(unsigned long long) |
| DECLARE_STREAM_OPERATOR(float) |
| DECLARE_STREAM_OPERATOR(double) |
| DECLARE_STREAM_OPERATOR(long double) |
| DECLARE_STREAM_OPERATOR(void*) |
| #undef DECLARE_STREAM_OPERATOR |
| |
| void LogMessage::Finish() { |
| std::string message(message_.str()); |
| if (log_handler_ != nullptr) { |
| log_handler_->HandleMessage(level_, filename_, line_, message); |
| } else if (level_ == LOGLEVEL_FATAL) { |
| // Expect the log_handler_ to handle FATAL calls, but we should still fail |
| // as expected even if no log_handler_ is defined. For ease of debugging, |
| // we also print out the error statement. |
| std::cerr << filename_ << ":" << line_ << " FATAL: " << message |
| << std::endl; |
| std::abort(); |
| } |
| } |
| |
| void LogFinisher::operator=(LogMessage& other) { other.Finish(); } |
| |
| } // namespace internal |
| |
| void SetLogHandler(std::unique_ptr<LogHandler> new_handler) { |
| internal::log_handler_ = std::move(new_handler); |
| } |
| |
| void SetLogfileDirectory(const std::string& output_dir) { |
| if (internal::log_handler_ != nullptr) { |
| internal::log_handler_->SetOutputDir(output_dir); |
| } |
| } |
| |
| } // namespace blaze_util |