ClickHouse/base/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
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void addChannel(Poco::AutoPtr<Poco::Channel> channel, const std::string & name);
void addTextLog(std::shared_ptr<DB::TextLog> log, int max_priority);
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void setLevel(const std::string & name, int level);
private:
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void logSplit(const Poco::Message & msg);
void tryLogSplit(const Poco::Message & msg);
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using ChannelPtr = Poco::AutoPtr<Poco::Channel>;
/// Handler and its pointer casted to extended interface
using ExtendedChannelPtrPair = std::pair<ChannelPtr, ExtendedLogChannel *>;
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std::map<std::string, ExtendedChannelPtrPair> channels;
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std::mutex text_log_mutex;
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std::weak_ptr<DB::TextLog> text_log;
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std::atomic<int> text_log_max_priority = -1;
};
}