60 lines
1.9 KiB
C++
60 lines
1.9 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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#pragma once
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#include <folly/Range.h>
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#include <folly/logging/LogFormatter.h>
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namespace folly {
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/**
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* A LogFormatter implementation that produces messages in a format similar to
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* that produced by the Google logging library.
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*
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* The glog message format is:
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*
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* LmmDD HH:MM:SS.USECS THREAD [THREADNAME] (THREADCTX) FILE:LINE] MSG
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*
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* L: A 1-character code describing the log level (e.g., E, W, I, V)
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* mm: 2-digit month
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* DD: 2-digit day
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* HH: 2-digit hour, 24-hour format
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* MM: 2-digit minute
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* SS: 2-digit second
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* USECS: 6-digit microseconds
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* THREAD: Thread ID
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* FILE: Filename (just the last component)
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* LINE: Line number
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* MSG: The actual log message
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*
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* [THREADNAME] is the thread name, and is only included if --logthreadnames
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* was enabled on the command line.
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*
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* (THREADCTX) is thread-local log context data, if it has been set. (This is
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* a Facebook-specific modification, and is disabled unless --logthreadcontext
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* was enabled on the command line.)
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*
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* Exception information and a custom log prefix may also appear after the
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* file name and line number, before the ']' character.
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*/
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class GlogStyleFormatter : public LogFormatter {
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public:
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std::string formatMessage(
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const LogMessage& message, const LogCategory* handlerCategory) override;
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};
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} // namespace folly
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