52 lines
1.6 KiB
C++
52 lines
1.6 KiB
C++
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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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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#include <folly/logging/ImmediateFileWriter.h>
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#include <folly/FileUtil.h>
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#include <folly/String.h>
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#include <folly/logging/LoggerDB.h>
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#include <folly/portability/Unistd.h>
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namespace folly {
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ImmediateFileWriter::ImmediateFileWriter(StringPiece path)
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: file_{path.str(), O_WRONLY | O_APPEND | O_CREAT} {}
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ImmediateFileWriter::ImmediateFileWriter(folly::File&& file)
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: file_{std::move(file)} {}
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void ImmediateFileWriter::writeMessage(
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StringPiece buffer, uint32_t /* flags */) {
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// Write the data.
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// We are doing direct file descriptor writes here, so there is no buffering
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// of log message data. Each message is immediately written to the output.
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auto ret = folly::writeFull(file_.fd(), buffer.data(), buffer.size());
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if (ret < 0) {
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int errnum = errno;
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LoggerDB::internalWarning(
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__FILE__,
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__LINE__,
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"error writing to log file ",
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file_.fd(),
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": ",
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errnoStr(errnum));
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}
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}
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void ImmediateFileWriter::flush() {}
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} // namespace folly
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