nosqldb-oraclejs
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Oracle NoSQL Database JS Driver
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<h1 class="page-title">Source: logger.js</h1>
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<pre class="prettyprint source linenums"><code>/*-
*
* This file is part of Oracle NoSQL Database
* Copyright (C) 2014, 2018 Oracle and/or its affiliates. All rights reserved.
*
* If you have received this file as part of Oracle NoSQL Database the
* following applies to the work as a whole:
*
* Oracle NoSQL Database server software is free software: you can
* redistribute it and/or modify it under the terms of the GNU Affero
* General Public License as published by the Free Software Foundation,
* version 3.
*
* Oracle NoSQL Database is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Affero General Public License for more details.
*
* If you have received this file as part of Oracle NoSQL Database Client or
* distributed separately the following applies:
*
* Oracle NoSQL Database client software is free software: you can
* redistribute it and/or modify it under the terms of the Apache License
* as published by the Apache Software Foundation, version 2.0.
*
* You should have received a copy of the GNU Affero General Public License
* and/or the Apache License in the LICENSE file along with Oracle NoSQL
* Database client or server distribution. If not, see
* <http://www.gnu.org/licenses/>
* or
* <http://www.apache.org/licenses/LICENSE-2.0>.
*
* An active Oracle commercial licensing agreement for this product supersedes
* these licenses and in such case the license notices, but not the copyright
* notice, may be removed by you in connection with your distribution that is
* in accordance with the commercial licensing terms.
*
* For more information please contact:
*
* berkeleydb-info_us@oracle.com
*
*/
'use strict'
/*global logConfiguration*/
/*global fs*/
var CONFIG_FILE = 'nosqldb.logconf.json';
function getTime() {
var date = new Date();
var hour = date.getHours();
hour = (hour < 10 ? '0' : '') + hour;
var min = date.getMinutes();
min = (min < 10 ? '0' : '') + min;
var sec = date.getSeconds();
sec = (sec < 10 ? '0' : '') + sec;
var msec = date.getMilliseconds();
msec = (msec < 10 ? '00' : (msec < 100 ? '0' : '') ) + msec;
var year = date.getFullYear();
var month = date.getMonth() + 1;
month = (month < 10 ? '0' : '') + month;
var day = date.getDate();
day = (day < 10 ? '0' : '') + day;
return year + '-' + month + '-' + day + ' ' + hour + ':' + min + ':' + sec +
'.' + msec;
}
function setFile(file, callback) {
if (typeof file === 'string') {
if (!fs.existsSync(file)) {
var firstMessage = '[' + getTime() +
'] [INIT] KVStore for node.js log system - file created\n';
fs.writeFile(file, firstMessage, function (err) {
if (err) {
if (callback) callback(err);
else throw err;
} else return file;
});
}
return file;
}
}
function verifyDebugLevel(logLevel) {
var result = 0;
if (typeof logLevel === 'string')
result = levels.levels.indexOf(logLevel);
else if (typeof logLevel === 'number')
result = logLevel;
return result;
}
function log(logger, level, stringLevel, message, callback) {
if (logger.logLevel >= level) {
var stack = new Error().stack.split('\n');
if (typeof message !== 'string') {
message = JSON.stringify(message);
}
var logString = '[' + getTime() + '] ' +
stringLevel + '[' + stack[3].trim() + '] ' +
message + '\n';
if (logger.logToFile) {
fs.appendFile(logger.logFile, logString, function (err) {
if (err) {
if (callback) callback(err);
else throw err;
}
});
}
if (logger.logToConsole)
console.log(logString);
}
}
var levels = {
OFF: 0,
FATAL: 1,
ERROR: 2,
WARN: 3,
INFO: 4,
DEBUG: 5,
TRACE: 6,
ALL: 7,
levels: ['OFF', 'FATAL', 'ERROR', 'WARN', 'INFO', 'DEBUG', 'TRACE', 'ALL']
}
exports.LOG_LEVELS = levels;
/**
* Creates a new Logger object
* @constructor
*/
function Logger() {
var conf = {};
if (fs.existsSync(CONFIG_FILE)) {
conf = JSON.parse(fs.readFileSync(CONFIG_FILE));
if (conf) {
this.logLevel = conf.logLevel;
this.logToFile = conf.logToFile;
this.logFile = conf.logFile;
this.logToConsole = conf.logToConsole;
return;
}
} else {
this.logLevel = conf.logLevel = levels.OFF;
this.logToFile = conf.logToFile = true;
this.logFile = conf.logFile = 'nosqldb-oraclejs.log';
this.logToConsole = conf.logToConsole = false;
fs.writeFileSync(CONFIG_FILE, JSON.stringify(conf, null, 4));
}
this.LOG_LEVELS = levels;
}
exports.Logger = Logger;
Logger.prototype.trace = function (message, callback) {
log(this, levels.TRACE, '[TRACE] ', message, callback);
};
Logger.prototype.debug = function (message, callback) {
log(this, levels.DEBUG, '[DEBUG] ', message, callback);
};
Logger.prototype.info = function (message, callback) {
log(this, levels.INFO, '[INFO] ', message, callback);
};
Logger.prototype.warn = function (message, callback) {
log(this, levels.WARN, '[WARN] ', message, callback);
};
Logger.prototype.error = function (message, callback) {
log(this, levels.ERROR, '[ERROR] ', message, callback);
};
Logger.prototype.fatal = function (message, callback) {
log(this, levels.FATAL, '[FATAL] ', message, callback);
};
</code></pre>
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