mirror of
https://github.com/OpenNebula/one.git
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217 lines
5.5 KiB
C++
217 lines
5.5 KiB
C++
/* -------------------------------------------------------------------------- */
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/* Copyright 2002-2016, OpenNebula Project, OpenNebula Systems */
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/* */
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/* Licensed under the Apache License, Version 2.0 (the "License"); you may */
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/* not use this file except in compliance with the License. You may obtain */
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/* 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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#ifndef _LOG_H_
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#define _LOG_H_
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#include <string>
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#include <fstream>
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#include <stdexcept>
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#include <syslog.h>
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#include "PoolObjectSQL.h"
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using namespace std;
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/**
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* The Logger class is an interface used by OpenNebula components to log
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* messages
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*/
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class Log
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{
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public:
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enum MessageType {
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ERROR = 0,
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WARNING = 1,
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INFO = 2,
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DEBUG = 3,
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DDEBUG = 4,
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DDDEBUG = 5
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};
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static const char error_names[];
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Log(const MessageType _level = WARNING):log_level(_level){};
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virtual ~Log(){};
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MessageType get_log_level()
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{
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return log_level;
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}
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static void set_zone_id(int zid)
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{
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zone_id = zid;
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}
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// -------------------------------------------------------------------------
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// Logger interface
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// -------------------------------------------------------------------------
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virtual void log(
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const char * module,
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const MessageType type,
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const char * message) = 0;
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protected:
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/**
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* Minimum log level for the messages
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*/
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MessageType log_level;
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/**
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* Zone ID for log messages, for all Log instances
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* M
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*/
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static unsigned int zone_id;
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};
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/* -------------------------------------------------------------------------- */
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/* -------------------------------------------------------------------------- */
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/**
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* Log messages to a log file
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*/
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class FileLog : public Log
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{
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public:
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FileLog(const string& file_name,
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const MessageType level = WARNING,
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ios_base::openmode mode = ios_base::app);
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virtual ~FileLog();
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virtual void log(
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const char * module,
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const MessageType type,
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const char * message);
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private:
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string log_file_name;
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};
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/**
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* Log messages to a log file
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*/
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class FileLogTS : public FileLog
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{
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public:
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FileLogTS(const string& file_name,
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const MessageType level = WARNING,
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ios_base::openmode mode = ios_base::app)
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:FileLog(file_name,level,mode)
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{
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pthread_mutex_init(&log_mutex,0);
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}
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~FileLogTS()
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{
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pthread_mutex_destroy(&log_mutex);
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}
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void log(
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const char * module,
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const MessageType type,
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const char * message)
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{
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pthread_mutex_lock(&log_mutex);
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FileLog::log(module,type,message);
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pthread_mutex_unlock(&log_mutex);
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}
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private:
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pthread_mutex_t log_mutex;
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};
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/* -------------------------------------------------------------------------- */
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/* -------------------------------------------------------------------------- */
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/**
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A Send log messages to the standard output stream std::clog
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*/
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class StdLog : public Log
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{
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public:
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StdLog(const MessageType level):Log(level){};
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StdLog(const MessageType level,
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int oid,
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const PoolObjectSQL::ObjectType obj_type);
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~StdLog(){};
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void log(
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const char * module,
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const MessageType type,
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const char * message);
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private:
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string resource_label;
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};
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/* -------------------------------------------------------------------------- */
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/* -------------------------------------------------------------------------- */
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/**
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* Send log messages to syslog
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*/
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class SysLog : public Log
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{
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public:
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SysLog(const MessageType level,
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const string& label);
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SysLog(const MessageType level,
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int oid,
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const PoolObjectSQL::ObjectType obj_type);
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~SysLog(){};
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void log(
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const char * module,
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const MessageType type,
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const char * message);
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/**
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* Return the associated syslog level
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*/
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inline static int level(const MessageType level)
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{
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switch (level)
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{
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case Log::ERROR:
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return LOG_ERR;
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case Log::WARNING:
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return LOG_WARNING;
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case Log::INFO:
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return LOG_INFO;
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case Log::DEBUG:
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case Log::DDEBUG:
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case Log::DDDEBUG:
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return LOG_DEBUG;
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}
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return LOG_INFO;
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}
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private:
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string resource_label;
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};
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#endif /* _LOG_H_ */
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