ClickHouse/libs/libloggers/loggers/OwnSplitChannel.h

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#pragma once
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#include <atomic>
#include <vector>
#include <Poco/AutoPtr.h>
#include <Poco/Channel.h>
#include "ExtendedLogChannel.h"
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#include <Interpreters/TextLog.h>
namespace DB
{
/// Works as Poco::SplitterChannel, but performs additional work:
/// passes logs to Client via TCP interface
/// tries to use extended logging interface of child for more comprehensive logging
class OwnSplitChannel : public Poco::Channel
{
public:
/// Makes an extended message from msg and passes it to the client logs queue and child (if possible)
void log(const Poco::Message & msg) override;
/// Adds a child channel
void addChannel(Poco::AutoPtr<Poco::Channel> channel);
void addTextLog(std::shared_ptr<DB::TextLog> log);
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private:
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void logSplit(const Poco::Message & msg);
using ChannelPtr = Poco::AutoPtr<Poco::Channel>;
/// Handler and its pointer casted to extended interface
using ExtendedChannelPtrPair = std::pair<ChannelPtr, ExtendedLogChannel *>;
std::vector<ExtendedChannelPtrPair> channels;
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std::mutex text_log_mutex;
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std::weak_ptr<DB::TextLog> text_log;
};
}