77 lines
2.2 KiB
C++
77 lines
2.2 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 <string>
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#include <unordered_map>
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#include <folly/Range.h>
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namespace folly {
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class LogWriter;
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class LogFormatter;
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class StandardLogHandler;
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/**
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* StandardLogHandlerFactory contains helper methods for LogHandlerFactory
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* implementations that create StandardLogHandler objects.
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*
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* StandardLogHandlerFactory does not derive from LogHandlerFactory itself.
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*/
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class StandardLogHandlerFactory {
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public:
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using Options = std::unordered_map<std::string, std::string>;
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class OptionProcessor {
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public:
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virtual ~OptionProcessor() {}
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/**
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* Process an option.
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*
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* This should return true if the option was processed successfully,
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* or false if this is an unknown option name. It should throw an
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* exception if the option name is known but there is a problem with the
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* value.
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*/
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virtual bool processOption(StringPiece name, StringPiece value) = 0;
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};
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class FormatterFactory : public OptionProcessor {
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public:
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virtual std::shared_ptr<LogFormatter> createFormatter(
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const std::shared_ptr<LogWriter>& logWriter) = 0;
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};
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class WriterFactory : public OptionProcessor {
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public:
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virtual std::shared_ptr<LogWriter> createWriter() = 0;
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};
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static std::shared_ptr<StandardLogHandler> createHandler(
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StringPiece type, WriterFactory* writerFactory, const Options& options);
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static std::shared_ptr<StandardLogHandler> createHandler(
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StringPiece type,
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WriterFactory* writerFactory,
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FormatterFactory* formatterFactory,
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const Options& options);
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};
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} // namespace folly
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