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# Simple Node Logger
```
__ _ _ __ _ __
/ _(_)_ __ ___ _ __ | | ___ /\ \ \___ __| | ___ / / ___ __ _ __ _ ___ _ __
\ \| | '_ ` _ \| '_ \| |/ _ \ / \/ / _ \ / _` |/ _ \ / / / _ \ / _` |/ _` |/ _ \ '__|
_\ \ | | | | | | |_) | | __/ / /\ / (_) | (_| | __/ / /__| (_) | (_| | (_| | __/ |
\__/_|_| |_| |_| .__/|_|\___| \_\ \/ \___/ \__,_|\___| \____/\___/ \__, |\__, |\___|_|
|_| |___/ |___/
```
[![NPM version](https://badge.fury.io/js/simple-node-logger.svg)](http://badge.fury.io/js/simple-node-logger) [![Build Status](https://travis-ci.org/darrylwest/simple-node-logger.svg?branch=master)](https://travis-ci.org/darrylwest/simple-node-logger) [![Dependency Status](https://david-dm.org/darrylwest/simple-node-logger.svg)](https://david-dm.org/darrylwest/simple-node-logger)
A simple multi-level logger for console, file, and rolling file appenders. Features include:
- levels: trace, debug, info, warn, error and fatal levels (plus all and off)
- flexible appender/formatters with default to HH:mm:ss.SSS LEVEL message
- add appenders to send output to console, file, rolling file, etc
- change log levels on the fly
- domain and category columns
- overridable format methods in base appender
- stats that track counts of all log statements including warn, error, etc
- ability to configure to emit process error event for central trapping
## Installation
`npm install simple-node-logger --save`
## How to use
```javascript
// create a stdout console logger
const log = require('simple-node-logger').createSimpleLogger();
```
or
```javascript
// create a stdout and file logger
const log = require('simple-node-logger').createSimpleLogger('project.log');
```
or
```javascript
// create a custom timestamp format for log statements
const SimpleNodeLogger = require('simple-node-logger'),
opts = {
logFilePath:'mylogfile.log',
timestampFormat:'YYYY-MM-DD HH:mm:ss.SSS'
},
log = SimpleNodeLogger.createSimpleLogger( opts );
```
or
```javascript
// create a file only file logger
const log = require('simple-node-logger').createSimpleFileLogger('project.log');
```
or
```javascript
// create a rolling file logger based on date/time that fires process events
const opts = {
errorEventName:'error',
logDirectory:'/mylogfiles', // NOTE: folder must exist and be writable...
fileNamePattern:'roll-<DATE>.log',
dateFormat:'YYYY.MM.DD'
};
const log = require('simple-node-logger').createRollingFileLogger( opts );
```    
or
```javascript
// create a log manager
const manager = require('simple-node-logger').createLogManager();
manager.createConsoleAppender();
const log = manager.createLogger('MyClass');
// create other logs and appenders...
```
The first use simply logs to the console. The second logs to the console and to the project.log file. The third create a console logger with a custom timestamp format. The fourth logs to the file only. The fifth creates a rolling file log system in the target log folder. The fifth creates a log manager to enable you to add various appenders with multiple levels and create logs for each module or class.
*See the examples folder for in depth samples...*
## Log Levels
The log levels include the standard set: trace, debug, info, warn, error and fatal. The default level is info. The log level can be set at run-time by doing this:
```javascript
log.setLevel('warn');
```
This sets the log level to warn and suppresses debug and info messages.
## Log Statement Formats
### Simple Logger
The default format is HH:mm:ss.SSS LEVEL message. For example, the log message:
```javascript
log.info('subscription to ', channel, ' accepted at ', new Date().toJSON());
```
Yields:
`14:14:21.363 INFO subscription to /devchannel accepted at 2014-04-10T14:20:52.938Z`
### Category Logger
If you create a logger with a category name, all log statements will include this category. Typically a category is a class or module name. If you create a logger with the category name 'MyCategory', the log statement would format like this:
`14:14:21.363 INFO MyCategory subscription to /devchannel accepted at 2014-04-10T14:20:52.938Z`
## Appenders
You can create a single logger / log manager and add multiple appenders with different log levels. For example, you can add a console appender that has a log level of warn and a file appender to debug.
_See examples/category-logger.js for an example_.
### Console
Writes to the console. This is the simplest appender typically used for command line applications or for development.
### File
Writes to the specified file. This appender is typically used for services that periodically start and stop or that have a limited number of log statements. An example would be to log just error & fatal messages separate from other logs.
### Rolling File Appender
The rolling file appender offers a full production logger where files roll based on date and time. The minimum roll time is a single hour. A typical application would be a production environment where log files are rolled throughout the day then archived to a separate location.
The rolling file appender requires a valid date format and file name pattern. The filename must contain the key word <DATE> that will be replaced with the formatted date. The configuration must also include a target log directory where the files will be written.
#### Valid Filename Patterns
```
mylog-<DATE>.log
ApplicationName.log.<DATE>
<DATE>.log
<DATE>
```
#### Valid Date Formats
Date formats must map to acceptable file names so have more restrictions than typical dates. If you use delimiters, you are restricted to a dash or dot delimiter to separate year, month, day and hour. Valid examples include:
```
MMDD // simple month day that rolls at midnight (no delimiters)
YYYY.MM.DD-HH // year month day and hour that can roll up to once per hour
YYYY-MM-DD.a // year month day and am/pm that rolls twice per day
YYYY-MMM-DD // year month day where month is the short name (Mar, Apr, etc)
```
The default format YYYY.MM.DD is used if the format is not supplied.
## Dynamic Configuration
Create a javascript configuration that implements 'readConfig' to return configuration details.
## Examples
The examples folder includes a handful of simple to not so simple cases for console, file, multi-appender, category, etc.
## Customizations
### Appenders
Adding a new appender is as easy as implementing write( logEntry ). The easiest way to implement is by extending the base class AbstractAppender. You may also easily override the formatting, order, etc by overriding or providing your own abstract or concrete appender.
For example, you can extend the AbstractAppender to create a JSON appender by doing this:
```javascript
const AbstractAppender = require('simple-node-logger').AbstractAppender;
const JSONAppender = function() {
'use strict';
var appender = this;
var opts = {
typeName:'JSONAppender'
};
AbstractAppender.extend( this, opts );
// format and write all entry/statements
this.write = function(entry) {
var fields = appender.formatEntry( entry );
process.stdout.write( JSON.stringify( entry ) + '\n' );
};
   };
```
### Overrides
#### Appenders
The appenders have formatting messages that can be overridden at the abstract or concrete level. The format methods include:
- formatEntry(entry) - to override all formatting
- formatMessage(msgList) - to override a list of messages
- formatDate(value) - custom date, defaults to ISO8601
- formatObject(value) - custom object, defaults to json for regular objects
#### Logger
It's easy to extend any one of the log methods at the instance level. Here is an example of overriding the error log to send a socket message:
```javascript
const log = new require('simple-node-logger').createSimpleLogger();
const socket = openWebSocket();
// override the standard error method to send a socket message
log.error = function() {
var args = Array.prototype.slice.call( arguments ),
entry = log.log('error', args);
// now do something special with the log entry...
process.nextTick(function() {
socket.send( JSON.stringify( entry ));
});
};
```
## Tests
All unit tests are written in mocha/chai/should and can be run from the command line by doing this:
`make test`
There is also a file watcher that can be invoked with this:
`make watch`
## Mocks
Mocks used for testing include MockLogger and MockAppender. Typically you would use MockLogger for unit tests like this:
```javascript
const MockLogger = require('simple-node-logger').mocks.MockLogger;
const log = MockLogger.createLogger('MyCategory');
log.info('this is a log statement');
   log.getLogEntries().length.should.equal( 1 );
```
MockLogger extends Logger and uses MockAppender to capture log entries.
## License
Apache 2.0
## Recent updates...
* 0.93.29: when an Error object is logged, the message and stack trace are sent to log targets
* 0.93.30: fixed example/category-logger.js and examples/domain-logger.js to not double-log
* 0.93.31: added thisArg to methods in AbstractAppender to enable proper binding and full override when extending
- - -
<p><small><em>Copyright © 2014-2018, rain city software | Version 0.93.37</em></small></p>

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/** darryl.west@raincitysoftware.com **/
module.exports = require('./lib/SimpleLogger');
module.exports.AbstractAppender = require('./lib/AbstractAppender');
module.exports.Logger = require('./lib/Logger');
module.exports.appenders = {
ConsoleAppender:require('./lib/ConsoleAppender'),
FileAppender:require('./lib/FileAppender'),
RollingFileAppender:require('./lib/RollingFileAppender')
};
module.exports.mocks = {
MockAppender:require('./test/mocks/MockAppender'),
MockLogger:require('./test/mocks/MockLogger')
};

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/**
* @class AbstractAppender
*
* @author: darryl.west@raincitysoftware.com
* @created: 7/7/14 5:58 PM
*/
const util = require( 'util' );
const moment = require( 'moment' );
const dash = require( 'lodash' );
const AbstractAppender = function(options) {
'use strict';
const appender = this;
const typeName = options.typeName;
const timestampFormat = options.timestampFormat || 'HH:mm:ss.SSS';
this.separator = options.separator || ' ';
/**
* format the entry and return the field list
*
* @param entry the log entry
* @param thisArg - use this to override the base object
*
* @returns field array
*/
this.formatEntry = function(entry, thisArg) {
const apdr = thisArg || appender;
const fields = [];
if (entry.domain) {
fields.push( entry.domain );
}
fields.push( apdr.formatTimestamp( entry.ts ) );
fields.push( apdr.formatLevel( entry.level ) );
if (entry.category) {
fields.push( entry.category );
}
fields.push( apdr.formatMessage( entry.msg ) );
return fields;
};
/**
* format the message
*
* @param msg the log message
* @param thisArg - use this to override the base object
*
* @returns field array
*/
this.formatMessage = function(msg, thisArg) {
const apdr = thisArg || appender;
if (!msg) {
return '';
}
if (util.isArray( msg )) {
const list = msg.map(function(item) {
if (util.isDate( item )) {
return apdr.formatDate( item );
} else {
return apdr.formatObject( item );
}
});
return list.join('');
} else {
return msg;
}
};
this.formatDate = function(value) {
return value.toJSON();
};
this.formatObject = function(value) {
if (!value) {
return '';
}
if (dash.isObject( value )) {
if (value instanceof Error) {
return [ value.message, value.stack ].join('\n');
}
try {
return JSON.stringify( value );
} catch (ignore) {
return 'json error: ' + value.toString();
}
} else {
var s = value.toString();
if (s === '[object Object]') {
return util.inspect( value );
} else {
return s;
}
}
};
/**
* format the level string by forcing to upper case and padding to 5 chars
*
* @param level
* @returns {string}
*/
this.formatLevel = function(level) {
let str = level.toUpperCase();
if (str.length < 5) {
str += ' ';
}
return str;
};
/**
* format the timestamp to HH:mm:ss.SSS
*
* @param ts the unix milliseconds
* @returns formatted string
*/
this.formatTimestamp = function(ts) {
return moment( ts ).format( timestampFormat );
};
/**
* return the type name of this appender (ConsoleAppender)
*/
this.getTypeName = function() {
return typeName;
};
// constructor tests
if (!typeName) {
throw new Error('appender must be constructed with a type name');
}
};
module.exports = AbstractAppender;
AbstractAppender.extend = function(child, options) {
'use strict';
const parent = new AbstractAppender( options );
dash.extend( child, parent );
return parent;
};

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/**
* @class ConsoleAppender
* @classdesc ConsoleAppender writes to the console all entries at or above the specified level.
*
* @author: darryl.west@raincitysoftware.com
* @created: 7/6/14 12:02 PM
*/
const Logger = require('./Logger' );
const AbstractAppender = require('./AbstractAppender' );
/*eslint no-console: "off"*/
const ConsoleAppender = function(opts) {
'use strict';
// get a copy of the opts
const options = Object.assign({}, opts);
const appender = this;
const typeName = options.typeName || 'ConsoleAppender';
const writer = options.writer || console.log;
let level = options.level || Logger.STANDARD_LEVELS[0];
let levels = options.levels || Logger.STANDARD_LEVELS;
let currentLevel = levels.indexOf( level );
options.typeName = typeName;
AbstractAppender.extend( this, options );
/**
* default formatter for this appender;
* @param entry
*/
this.formatter = function(entry) {
const fields = appender.formatEntry( entry );
return fields.join( appender.separator );
};
/**
* call formatter then write the entry to the console output
* @param entry - the log entry
*/
this.write = function(entry) {
if (levels.indexOf( entry.level ) >= currentLevel) {
writer( appender.formatter( entry ));
}
};
this.setLevel = function(level) {
const idx = levels.indexOf( level );
if (idx >= 0) {
currentLevel = idx;
}
};
};
module.exports = ConsoleAppender;

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/**
* @class FileAppender
*
* @author: darryl.west@raincitysoftware.com
* @created: 7/7/14 5:15 PM
*/
const Logger = require('./Logger' );
const AbstractAppender = require('./AbstractAppender' );
const dash = require( 'lodash' );
const path = require( 'path' );
const FileAppender = function(options) {
'use strict';
const appender = this;
const fs = options.fs || require( 'fs' );
const newline = /^win/.test(process.platform) ? '\r\n' : '\n';
const typeName = options.typeName || 'FileAppender';
const autoOpen = dash.isBoolean( options.autoOpen ) ? options.autoOpen : true;
const levels = options.levels || Logger.STANDARD_LEVELS;
let level = options.level || Logger.DEFAULT_LEVEL;
let currentLevel = levels.indexOf( level );
let logFilePath = options.logFilePath;
let writer = options.writer;
options.typeName = typeName;
AbstractAppender.extend( this, options );
/**
* default formatter for this appender;
* @param entry
*/
this.formatter = function(entry) {
const fields = appender.formatEntry( entry );
// add new line (for linux and windows)
fields.push( newline );
return fields.join( appender.separator );
};
/**
* call formatter then write the entry to the console output
* @param entry - the log entry
*/
this.write = function(entry) {
if (levels.indexOf( entry.level ) >= currentLevel) {
writer.write( appender.formatter( entry ) );
}
};
this.setLevel = function(level) {
const idx = levels.indexOf( level );
if (idx >= 0) {
currentLevel = idx;
}
};
// writer is opened on construction
const openWriter = function() {
if (!writer) {
const file = path.normalize( logFilePath );
const opts = {
flags:'a',
encoding:'utf8'
};
writer = fs.createWriteStream( file, opts );
}
};
this.closeWriter = function() {
if (writer) {
writer.end('\n');
}
};
// constructor tests
(function() {
if (!logFilePath) {
throw new Error('appender must be constructed with a log file path');
}
}());
if (autoOpen) {
openWriter();
}
};
module.exports = FileAppender;

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/**
* @class Logger
*
* @author: darryl.west@raincitysoftware.com
* @created: 7/5/14 6:28 PM
*/
const Logger = function(options) {
'use strict';
const logger = this,
pid = options.pid || process.pid,
errorEventName = options.errorEventName,
stats = new Map();
let domain = options.domain,
category = options.category,
level = options.level || Logger.DEFAULT_LEVEL,
levels = options.levels || Logger.STANDARD_LEVELS,
currentLevel = levels.indexOf( level ),
appenders = options.appenders || [];
// helper method
const isLevelAt = function(lvl) {
const idx = levels.indexOf( lvl );
return idx >= currentLevel;
};
/**
* log the statement message
*
* @param level the level of this message (label, i.e, info, warn, etc)
* @param msg
*/
this.log = function(level, msg) {
const entry = logger.createEntry( level, msg );
process.nextTick(function() {
// write the message to the appenders...
appenders.forEach(function(appender) {
appender.write( entry );
});
if (level === 'error' && typeof(errorEventName) === 'string') {
process.emit(errorEventName, entry);
}
});
return entry;
};
/**
* create the entry object used to log messages
*
* @param level - info, debug, etc.
* @param messageList - a list of message objects
* @returns then entry object
*/
this.createEntry = function(level, messageList) {
const entry = {};
entry.ts = Date.now();
entry.pid = pid;
if (domain) {
entry.domain = domain;
}
if (category) {
entry.category = category;
}
entry.level = level;
entry.msg = messageList;
return entry;
};
/**
* set the level
*
* @param lvl one of the recognized logger levels
*/
this.setLevel = function(lvl) {
currentLevel = levels.indexOf(lvl);
level = lvl;
appenders.forEach(app => {
app.setLevel( lvl );
});
};
/**
* return the current level string
*/
this.getLevel = function() {
return level;
};
/**
* set the list of appenders
* @param app
*/
this.setAppenders = function(appenderList) {
appenders = appenderList;
};
/**
* add an appender to the list
*
* @param appender - implements write method
*/
this.addAppender = function(appender) {
appenders.push( appender );
};
/**
* remove the appender using the type name
*/
this.removeAppender = function(typeName) {
throw new Error(`remove appender ${typeName} is not implemented yet...`);
};
this.getAppenders = function() {
return appenders;
};
this.isDebug = function() {
return isLevelAt( 'debug' );
};
this.isInfo = function() {
return isLevelAt( 'info' );
};
/**
* return the status map with log counts for each level
*/
this.getStats = function() {
return stats;
};
/**
* return the category name
*/
this.getCategory = function() {
return category;
};
/**
* return the domain name
*/
this.getDomain = function() {
return domain;
};
// now initialize the methods for the standard levels
const init = function() {
levels.forEach(function(lvl) {
stats.set(lvl, 0);
logger[ lvl ] = function() {
stats.set(lvl, stats.get(lvl) + 1);
if (levels.indexOf( lvl ) >= currentLevel) {
const args = Array.prototype.slice.call( arguments );
logger.log( lvl, args );
}
};
});
};
this.__protected = function() {
return {
pid:pid,
domain:domain,
category:category
};
};
init();
};
Logger.STANDARD_LEVELS = [ 'all', 'trace', 'debug', 'info', 'warn', 'error', 'fatal' ];
Logger.DEFAULT_LEVEL = 'info';
module.exports = Logger;

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node_modules/simple-node-logger/lib/RollingFileAppender.js generated vendored Normal file
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/**
* @class RollingFileAppender
*
* roll on size and/or date/time;
*
* @author: darryl.west@raincitysoftware.com
* @created: 7/27/14 9:52 AM
*/
const Logger = require( './Logger' );
const AbstractAppender = require( './AbstractAppender' );
const dash = require( 'lodash' );
const moment = require( 'moment' );
const path = require( 'path' );
const RollingFileAppender = function(options) {
'use strict';
const appender = this;
const fs = options.fs || require( 'fs' );
const newline = /^win/.test(process.platform) ? '\r\n' : '\n';
let typeName = options.typeName,
autoOpen = dash.isBoolean( options.autoOpen ) ? options.autoOpen : true,
logDirectory = options.logDirectory,
fileNamePattern = options.fileNamePattern,
dateFormat = options.dateFormat || 'YYYY.MM.DD',
level = options.level || Logger.DEFAULT_LEVEL,
levels = options.levels || Logger.STANDARD_LEVELS,
currentLevel = levels.indexOf( level ),
currentFile = options.currentFile,
rollTimer,
createInterval = options.createInterval || setInterval,
writers = [];
if (!typeName) {
typeName = options.typeName = 'RollingFileAppender';
}
AbstractAppender.extend( this, options );
const getWriter = function() {
return writers[0];
};
const openWriter = function(fname) {
const filename = fname || appender.createFileName();
const file = path.join( logDirectory, filename );
const opts = {
flags:'a',
encoding:'utf8'
};
let writer = fs.createWriteStream( file, opts );
// make this the current writer...
writers.unshift( writer );
currentFile = file;
// now close the current logger and remove from the writers list
while (writers.length > 1) {
// close the old writer
writer = writers.pop();
writer.removeAllListeners();
writer.end('\n');
}
};
// check once per minute to see if we need to roll
const startRollTimer = function() {
rollTimer = createInterval(function() {
if (appender.checkForRoll()) {
openWriter();
}
}, 60 * 1000);
};
/**
* default formatter for this appender;
* @param entry
*/
this.formatter = function(entry) {
const fields = appender.formatEntry( entry );
fields.push( newline );
return fields.join( appender.separator );
};
/**
* call formatter then write the entry to the console output
* @param entry - the log entry
*/
this.write = function(entry) {
if (levels.indexOf( entry.level ) >= currentLevel) {
const writer = getWriter();
if (writer) {
writer.write( appender.formatter( entry ) );
} else {
/*eslint no-console: "off"*/
console.log( 'no writer...' );
}
}
};
this.checkForRoll = function(now) {
// check to see if the
const fn = appender.createFileName( now );
const current = path.basename( currentFile );
return fn !== current;
};
this.createFileName = function(now) {
let dt;
if (now || now instanceof moment) {
dt = now.format( dateFormat );
} else {
dt = moment().format( dateFormat );
}
return fileNamePattern.replace( /<DATE>/i, dt );
};
this.setLevel = function(level) {
const idx = levels.indexOf( level );
if (idx >= 0) {
currentLevel = idx;
}
};
this.__protected = function() {
return {
openWriter:openWriter,
currentFile:currentFile,
rollTimer:rollTimer,
writers:writers
};
};
// constructor tests
(function() {
if (!logDirectory) {
throw new Error('appender must be constructed with a log directory');
}
if (!fileNamePattern) {
throw new Error('appender must be constructed with a file name pattern');
}
}());
// now validate the date pattern and file format
// date may only contain YMDHAa-.
if (autoOpen) {
openWriter();
startRollTimer();
}
};
module.exports = RollingFileAppender;

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node_modules/simple-node-logger/lib/SimpleLogger.js generated vendored Normal file
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/**
* @class SimpleLogger
*
* @author: darryl.west@raincitysoftware.com
* @created: 2014-07-06
*/
const dash = require( 'lodash' );
const Logger = require('./Logger' );
const ConsoleAppender = require('./ConsoleAppender' );
const FileAppender = require( './FileAppender' );
const RollingFileAppender = require( './RollingFileAppender' );
const SimpleLogger = function(opts) {
'use strict';
const options = Object.assign({}, opts);
const manager = this;
const domain = options.domain;
const appenders = options.appenders || [];
const loggers = options.loggers || [];
let dfltLevel = options.level || Logger.DEFAULT_LEVEL,
loggerConfigFile = options.loggerConfigFile,
refresh = options.refresh,
fs = options.fs || require('fs' ),
createInterval = options.createInterval || setInterval,
minRefresh = options.minRefresh || 10 * 1000,
errorEventName = options.errorEventName;
/**
* create a logger with optional category and level
*
* @param category
* @param level
*/
this.createLogger = function(category, level) {
const opts = Object.prototype.toString.call(category) === '[object String]' ? options : dash.merge({}, options, category);
opts.category = dash.isString(category) ? category : opts.category;
opts.level = level ? level : opts.level || dfltLevel;
opts.appenders = appenders;
if (errorEventName) {
opts.errorEventName = errorEventName;
}
const logger = new Logger( opts );
loggers.push( logger );
return logger;
};
/**
* create the console appender and add it to the appenders list
*
* @param opts - appender settings
* @returns ConsoleAppender -
*/
this.createConsoleAppender = function(opts) {
return manager.addAppender( new ConsoleAppender( Object.assign({}, opts ) ));
};
/**
* create a file appender and add it to the appenders list
*
* @param opts
* @returns a FileAppender object
*/
this.createFileAppender = function(opts) {
if (!opts) {
throw new Error('file appender must be created with log file path set in options');
}
return manager.addAppender( new FileAppender( opts ) );
};
/**
* create a rolling file appender and add it to the appender list
*
* @param opts
* @returns the appender
*/
this.createRollingFileAppender = function( opts ) {
return manager.addAppender( new RollingFileAppender( opts ) );
};
/**
* add the appender to list
*
* @param appender
* @returns the new appender
*/
this.addAppender = function(appender) {
appenders.push( appender );
return appender;
};
this.getAppenders = function() {
return appenders;
};
this.getLoggers = function() {
return loggers;
};
/**
* start the refresh thread; minimum cycle time = 10 seconds...
*/
this.startRefreshThread = function() {
// TODO replace with watcher thread
if (fs.existsSync( loggerConfigFile ) && dash.isNumber( refresh )) {
const t = Math.max( minRefresh, refresh );
createInterval( manager.readConfig, t);
}
};
/**
* set the level of all loggers to the specified level
*
* @param level - one of the know levels
*/
this.setAllLoggerLevels = function(level) {
loggers.forEach(function(logger) {
logger.setLevel( level );
});
};
/**
* read and parse the config file; change settings if required
*/
this.readConfig = function(completeCallback) {
// TODO refactor into configuration delegate to read stats and then process file only if stats change
const callback = (err, buf) => {
if (err) {
/*eslint no-console: "off"*/
console.log( err );
} else {
const conf = JSON.parse( buf.toString() );
if (conf.appenders && conf.appenders.length > 0) {
// find each appender and set the level
conf.appenders.forEach(function(app) {
const level = app.level;
const appender = dash.find( appenders, (item) => {
if (item.getTypeName() === app.typeName && app.level) {
return item;
}
});
if (appender && typeof appender.setLevel === 'function') {
appender.setLevel( level );
}
});
}
if (conf.loggers && conf.loggers.length > 0) {
conf.loggers.forEach(item => {
if (item.category === 'all') {
manager.setAllLoggerLevels( item.level );
}
});
}
}
if (completeCallback) {
return completeCallback( err );
}
};
fs.readFile( loggerConfigFile, callback );
};
this.__protected = function() {
return {
domain:domain,
dfltLevel:dfltLevel,
refresh:refresh,
loggerConfigFile:loggerConfigFile
};
};
};
module.exports = SimpleLogger;
/**
* static convenience method to create a simple console logger; see options for details
*
* @param options - optional, if present then it could be 1) a string or 2) and object. if it's a string it's assumed
* to be the logFilePath; if it's a string or an object with logFilePath property, then a file appender is created.
*
* Valid options:
* - logFilePath : a path to the file appender
* - domain : the logger domain, e.g., machine or site id
* - dfltLevel : the default log level (overrides info level)
* - timestampFormat : the format used for log entries (see moment date formats for all possibilities)
*
* @returns logger
*/
SimpleLogger.createSimpleLogger = function(options) {
'use strict';
let opts;
// if options is a string then it must be the
if (typeof options === 'string') {
opts = {
logFilePath: options
};
} else {
opts = Object.assign( {}, options );
}
const manager = new SimpleLogger(opts);
// pass options in to change date formats, etc
manager.createConsoleAppender( opts );
if (opts.logFilePath) {
manager.createFileAppender( opts );
}
return manager.createLogger();
};
/**
* static convenience method to create a file logger (no console logging);
*
* @param options - if string then it's the logFilePath, else options with the logFilePath
* @returns logger
*/
SimpleLogger.createSimpleFileLogger = function(options) {
'use strict';
if (!options) {
throw new Error('must create file logger with a logFilePath');
}
let opts;
// if options is a string then it must be the
if (typeof options === 'string') {
opts = {
logFilePath: options
};
} else {
opts = Object.assign({}, options );
}
const manager = new SimpleLogger( opts );
manager.createFileAppender( opts );
return manager.createLogger();
};
/**
* create a rolling file logger by passing options to SimpleLogger and Logger. this enables setting
* of domain, category, etc.
*
* @param options
* @returns rolling logger
*/
SimpleLogger.createRollingFileLogger = function(options) {
'use strict';
if (!options) {
throw new Error('createRollingFileLogger requires configuration options for this constructor');
}
var opts;
// read a dynamic config file if available
if (typeof options.readLoggerConfig === 'function') {
opts = options.readLoggerConfig();
opts.readLoggerConfig = options.readLoggerConfig;
} else {
opts = options;
}
var manager = new SimpleLogger( opts );
manager.createRollingFileAppender( opts );
if (opts.refresh && opts.loggerConfigFile) {
process.nextTick( manager.startRefreshThread );
}
return manager.createLogger( opts );
};
/**
* create a log manager
*
* @param options - file or rolling file specs;
*/
SimpleLogger.createLogManager = function(options) {
'use strict';
let opts;
// read a dynamic config file if available
if (options && typeof options.readLoggerConfig === 'function') {
opts = options.readLoggerConfig();
opts.readLoggerConfig = options.readLoggerConfig;
} else {
opts = Object.assign({}, options);
}
var manager = new SimpleLogger( opts );
if (opts.logDirectory && opts.fileNamePattern) {
manager.createRollingFileAppender( opts );
}
// create at least one appender
if (manager.getAppenders().length === 0) {
manager.createConsoleAppender( opts );
}
return manager;
};

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node_modules/simple-node-logger/package.json generated vendored Normal file
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{
"_from": "simple-node-logger@^0.93.33",
"_id": "simple-node-logger@0.93.37",
"_inBundle": false,
"_integrity": "sha512-p80d7uLcNe5U6PU8M0XjXU7YovNFktEttDOXzl+5CIsOlP8eo49IKkw0bXCcW6XwqHV5vyrcCVVxxNyvd4sBpg==",
"_location": "/simple-node-logger",
"_phantomChildren": {},
"_requested": {
"type": "range",
"registry": true,
"raw": "simple-node-logger@^0.93.33",
"name": "simple-node-logger",
"escapedName": "simple-node-logger",
"rawSpec": "^0.93.33",
"saveSpec": null,
"fetchSpec": "^0.93.33"
},
"_requiredBy": [
"/"
],
"_resolved": "https://registry.npmjs.org/simple-node-logger/-/simple-node-logger-0.93.37.tgz",
"_shasum": "4e1235917b3b4a8d6cc10e0208d157189afb2106",
"_spec": "simple-node-logger@^0.93.33",
"_where": "/home/wn/workspace-node/homepage",
"author": {
"name": "darryl.west@raincitysoftware.com"
},
"bugs": {
"url": "https://github.com/darrylwest/simple-node-logger/issues"
},
"bundleDependencies": false,
"dependencies": {
"lodash": "^4.17.2",
"moment": "^2.20.1"
},
"deprecated": false,
"description": "A node console and file logger suitable for small, medium and large production projects.",
"devDependencies": {
"chai": "^3.5.0",
"eslint": "^3.19.0",
"mocha": "^3.2.0",
"random-fixture-data": "^2.0.17"
},
"files": [
"index.js",
"lib/",
"test/mocks"
],
"homepage": "https://github.com/darrylwest/simple-node-logger",
"keywords": [
"log",
"logger",
"multi-appender",
"file logger",
"rolling file logger",
"console logger"
],
"license": "Apache-2.0",
"main": "index.js",
"name": "simple-node-logger",
"repository": {
"type": "git",
"url": "git://github.com/darrylwest/simple-node-logger.git"
},
"scripts": {
"test": "make test"
},
"version": "0.93.37"
}

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node_modules/simple-node-logger/test/mocks/MockAppender.js generated vendored Normal file
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/**
* @class MockAppender
*
* @author: darryl.west@raincitysoftware.com
* @created: 7/6/14 8:41 AM
*/
const MockAppender = function() {
'use strict';
const Logger = require('../../lib/Logger' );
let level = Logger.DEFAULT_LEVEL;
let levels = Logger.STANDARD_LEVELS;
let currentLevel = levels.indexOf( level );
let appender = this;
this.entries = [];
this.setLevel = function(level) {
let idx = levels.indexOf( level );
if (idx >= 0) {
currentLevel = idx;
}
};
this.getCurrentLevel = function() {
return currentLevel;
};
this.write = function(entry) {
appender.entries.push( entry );
};
};
module.exports = MockAppender;

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node_modules/simple-node-logger/test/mocks/MockLogger.js generated vendored Normal file
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/**
* @class MockLogger
*
* @author: darryl.west@raincitysoftware.com
* @created: 7/8/14 5:16 PM
*/
const dash = require('lodash' ),
Logger = require('../../lib/Logger' ),
MockAppender = require('./MockAppender');
const MockLogger = function(options) {
'use strict';
const opts = Object.assign({}, options);
// const mock = this;
const appender = new MockAppender();
// set these if not passed in
if (!opts.pid) {
opts.pid = 'test12345';
}
if (!opts.appenders) {
opts.appenders = [ appender ];
}
if (!opts.level) {
opts.level = 'trace';
}
dash.extend( this, new Logger(opts) );
this.getLogEntries = function() {
return appender.entries;
};
};
MockLogger.createLogger = function(category, level) {
'use strict';
const opts = {};
if (category) {
opts.category = category;
}
if (level) {
opts.level = level;
}
return new MockLogger( opts );
};
module.exports = MockLogger;