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- /*
- * Copyright 2017-present Facebook, 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 <folly/logging/StreamHandlerFactory.h>
- #include <folly/Conv.h>
- #include <folly/logging/FileWriterFactory.h>
- #include <folly/logging/StandardLogHandler.h>
- #include <folly/logging/StandardLogHandlerFactory.h>
- namespace folly {
- class StreamHandlerFactory::WriterFactory
- : public StandardLogHandlerFactory::WriterFactory {
- public:
- bool processOption(StringPiece name, StringPiece value) override {
- if (name == "stream") {
- stream_ = value.str();
- return true;
- }
- return fileWriterFactory_.processOption(name, value);
- }
- std::shared_ptr<LogWriter> createWriter() override {
- // Get the output file to use
- File outputFile;
- if (stream_.empty()) {
- throw std::invalid_argument(
- "no stream name specified for stream handler");
- } else if (stream_ == "stderr") {
- outputFile = File{STDERR_FILENO, /* ownsFd */ false};
- } else if (stream_ == "stdout") {
- outputFile = File{STDOUT_FILENO, /* ownsFd */ false};
- } else {
- throw std::invalid_argument(to<std::string>(
- "unknown stream \"",
- stream_,
- "\": expected one of stdout or stderr"));
- }
- return fileWriterFactory_.createWriter(std::move(outputFile));
- }
- std::string stream_;
- FileWriterFactory fileWriterFactory_;
- };
- std::shared_ptr<LogHandler> StreamHandlerFactory::createHandler(
- const Options& options) {
- WriterFactory writerFactory;
- return StandardLogHandlerFactory::createHandler(
- getType(), &writerFactory, options);
- }
- } // namespace folly
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