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* new logs: code
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hagen
parent
598d0e216a
commit
17fb419fb1
2 changed files with 284 additions and 253 deletions
268
Log.cpp
268
Log.cpp
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#include <boost/date_time/posix_time/posix_time.hpp>
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/*
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* Copyright (c) 2013-2016, The PurpleI2P Project
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*
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* This file is part of Purple i2pd project and licensed under BSD3
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*
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* See full license text in LICENSE file at top of project tree
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*/
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#include "Log.h"
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Log * g_Log = nullptr;
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namespace i2p {
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namespace log {
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Log logger;
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/**
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* @enum Maps our loglevel to their symbolic name
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*/
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static const char * g_LogLevelStr[eNumLogLevels] =
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{
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"error", // eLogError
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"warn", // eLogWarn
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"info", // eLogInfo
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"debug" // eLogDebug
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};
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static const char * g_LogLevelStr[eNumLogLevels] =
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{
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"error", // eLogError
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"warn", // eLogWarning
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"info", // eLogInfo
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"debug" // eLogDebug
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};
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#ifndef _WIN32
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/** convert LogLevel enum to syslog priority level */
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static int ToSyslogLevel(LogLevel lvl)
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{
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switch (lvl) {
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case eLogError:
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return LOG_ERR;
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case eLogWarning:
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return LOG_WARNING;
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case eLogInfo:
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return LOG_INFO;
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case eLogDebug:
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return LOG_DEBUG;
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default:
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// WTF? invalid log level?
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return LOG_CRIT;
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}
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}
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#endif
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void LogMsg::Process()
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{
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#ifndef _WIN32
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if (log && log->SyslogEnabled()) {
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// only log to syslog
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syslog(ToSyslogLevel(level), "%s", s.str().c_str());
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return;
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}
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#endif
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auto stream = log ? log->GetLogStream () : nullptr;
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auto& output = stream ? *stream : std::cout;
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if (log)
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output << log->GetTimestamp ();
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else
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output << boost::posix_time::second_clock::local_time().time_of_day ();
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output << "/" << g_LogLevelStr[level] << " - ";
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output << s.str();
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}
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const std::string& Log::GetTimestamp ()
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{
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#if (__GNUC__ == 4) && (__GNUC_MINOR__ <= 6) && !defined(__clang__)
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auto ts = std::chrono::monotonic_clock::now ();
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#else
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auto ts = std::chrono::steady_clock::now ();
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#endif
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if (ts > m_LastTimestampUpdate + std::chrono::milliseconds (500)) // 0.5 second
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{
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m_LastTimestampUpdate = ts;
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m_Timestamp = boost::posix_time::to_simple_string (boost::posix_time::second_clock::local_time().time_of_day ());
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}
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return m_Timestamp;
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}
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void Log::Flush ()
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{
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if (m_LogStream)
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m_LogStream->flush();
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}
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void Log::SetLogFile (const std::string& fullFilePath, bool truncate)
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{
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m_FullFilePath = fullFilePath;
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auto mode = std::ofstream::out | std::ofstream::binary;
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mode |= truncate ? std::ofstream::trunc : std::ofstream::app;
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auto logFile = std::make_shared<std::ofstream> (fullFilePath, mode);
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if (logFile->is_open ())
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{
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SetLogStream (logFile);
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LogPrint(eLogInfo, "Log: will send messages to ", fullFilePath);
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}
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}
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void Log::ReopenLogFile ()
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{
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if (m_FullFilePath.length () > 0)
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{
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SetLogFile (m_FullFilePath, false); // don't truncate
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LogPrint(eLogInfo, "Log: file ", m_FullFilePath, " reopen");
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/**
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* @brief Maps our log levels to syslog one
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* @return syslog priority LOG_*, as defined in syslog.h
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*/
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static inline int GetSyslogPrio (enum LogLevel l) {
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int priority = LOG_DEBUG;
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switch (l) {
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case eLogError : priority = LOG_ERR; break;
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case eLogWarning : priority = LOG_WARNING; break;
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case eLogInfo : priority = LOG_INFO; break;
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case eLogDebug : priority = LOG_DEBUG; break;
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default : priority = LOG_DEBUG; break;
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}
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return priority;
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}
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}
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void Log::SetLogLevel (const std::string& level)
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{
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if (level == "error") { m_MinLevel = eLogError; }
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else if (level == "warn") { m_MinLevel = eLogWarning; }
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else if (level == "info") { m_MinLevel = eLogInfo; }
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else if (level == "debug") { m_MinLevel = eLogDebug; }
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else {
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LogPrint(eLogError, "Log: Unknown loglevel: ", level);
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return;
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}
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LogPrint(eLogInfo, "Log: min msg level set to ", level);
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}
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void Log::SetLogStream (std::shared_ptr<std::ostream> logStream)
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{
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m_LogStream = logStream;
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}
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void Log::StartSyslog(const std::string & ident, const int facility)
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{
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#ifndef _WIN32
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m_Ident = ident;
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openlog(m_Ident.c_str(), LOG_PID, facility);
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#endif
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}
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void Log::StopSyslog()
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{
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Log::Log():
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m_Destination(eLogStdout), m_MinLevel(eLogInfo),
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m_LogStream (nullptr), m_Logfile(""), m_IsReady(false)
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{
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}
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Log::~Log ()
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{
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switch (m_Destination) {
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#ifndef _WIN32
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closelog();
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m_Ident.clear();
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case eLogSyslog :
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closelog();
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break;
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#endif
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}
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case eLogFile:
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case eLogStream:
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m_LogStream->flush();
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break;
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default:
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/* do nothing */
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break;
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}
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Process();
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}
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bool Log::SyslogEnabled()
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{
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return m_Ident.size() > 0;
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}
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void Log::SetLogLevel (const std::string& level) {
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if (level == "error") { m_MinLevel = eLogError; }
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else if (level == "warn") { m_MinLevel = eLogWarning; }
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else if (level == "info") { m_MinLevel = eLogInfo; }
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else if (level == "debug") { m_MinLevel = eLogDebug; }
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else {
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LogPrint(eLogError, "Log: unknown loglevel: ", level);
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return;
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}
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LogPrint(eLogInfo, "Log: min messages level set to ", level);
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}
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const char * Log::TimeAsString(std::time_t t) {
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if (t != m_LastTimestamp) {
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strftime(m_LastDateTime, sizeof(m_LastDateTime), "%H:%M:%S", localtime(&t));
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m_LastTimestamp = t;
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}
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return m_LastDateTime;
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}
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void Log::Process() {
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std::unique_lock<std::mutex> l(m_OutputLock);
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while (1) {
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auto msg = m_Queue.GetNextWithTimeout (1);
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if (!msg)
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break;
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switch (m_Destination) {
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#ifndef _WIN32
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case eLogSyslog:
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syslog(GetSyslogPrio(msg->level), "%s", msg->text.c_str());
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break;
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#endif
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case eLogFile:
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case eLogStream:
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*m_LogStream << TimeAsString(msg->timestamp) << "/" << g_LogLevelStr[msg->level] << " - " << msg->text << std::endl;
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break;
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default:
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std::cout << TimeAsString(msg->timestamp) << "/" << g_LogLevelStr[msg->level] << " - " << msg->text << std::endl;
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break;
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} // switch
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} // while
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}
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void Log::Append(std::shared_ptr<i2p::log::LogMsg> & msg) {
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m_Queue.Put(msg);
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if (!m_IsReady)
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return;
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Process();
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}
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void Log::SendTo (const std::string& path) {
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auto flags = std::ofstream::out | std::ofstream::app;
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auto os = std::make_shared<std::ofstream> (path, flags);
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if (os->is_open ()) {
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m_Logfile = path;
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m_Destination = eLogFile;
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m_LogStream = os;
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m_IsReady = true;
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return;
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}
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LogPrint(eLogError, "Log: can't open file ", path);
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}
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void Log::SendTo (std::shared_ptr<std::ostream> os) {
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m_Destination = eLogStream;
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m_IsReady = true;
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m_LogStream = os;
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}
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#ifndef _WIN32
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void Log::SendTo(const char *name, int facility) {
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m_Destination = eLogSyslog;
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m_LogStream = nullptr;
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m_IsReady = true;
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openlog(name, LOG_CONS | LOG_PID, facility);
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}
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#endif
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void Log::Reopen() {
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if (m_Destination == eLogFile)
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SendTo(m_Logfile);
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}
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Log & Logger() {
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return logger;
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}
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} // log
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} // i2p
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