ClickHouse/base/loggers/OwnSplitChannel.h
2022-01-17 22:36:27 +08:00

48 lines
1.3 KiB
C++

#pragma once
#include <atomic>
#include <vector>
#include <map>
#include <mutex>
#include <Poco/AutoPtr.h>
#include <Poco/Channel.h>
#include "ExtendedLogChannel.h"
namespace DB
{
class TextLog;
}
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, const std::string & name);
void addTextLog(std::shared_ptr<DB::TextLog> log, int max_priority);
void setLevel(const std::string & name, int level);
private:
void logSplit(const Poco::Message & msg);
void tryLogSplit(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::map<std::string, ExtendedChannelPtrPair> channels;
std::mutex text_log_mutex;
std::weak_ptr<DB::TextLog> text_log;
std::atomic<int> text_log_max_priority = -1;
};
}