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feat(SDK-2217): add logger with loglevel support #1005
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,94 @@ | ||
'use strict'; | ||
goog.provide('Logger'); | ||
// jscs:disable validateIndentation | ||
/** | ||
* @constructor | ||
*/ | ||
|
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Logger = function() { | ||
/** | ||
* @private | ||
* @type {string} | ||
*/ | ||
this.level_ = 'error'; | ||
this.levelsOrdered = [ 'verbose', 'info', 'warn', 'error', 'none' ]; | ||
}; | ||
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/** | ||
* Sets the logging level. | ||
* @param {string} level - The logging level to set. | ||
*/ | ||
Logger.prototype.setLevel = function(level) { | ||
if (this.levelsOrdered.indexOf(level) !== -1) { | ||
this.level_ = level; | ||
} | ||
else { | ||
console.error(`Invalid log level: ${level}`); | ||
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} | ||
}; | ||
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/** | ||
* Logs a message to the console if the log level allows it. | ||
* @param {string} level - The logging level of the message. | ||
* @param {...*} args - The message to log. | ||
*/ | ||
Logger.prototype.log = function(level) { | ||
var args = Array.prototype.slice.call(arguments, 1); | ||
if (this.shouldLog(level)) { | ||
switch (level) { | ||
case 'info': | ||
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this.logInfo_(args); | ||
break; | ||
case 'warn': | ||
this.logWarning_(args); | ||
break; | ||
case 'error': | ||
this.logError_(args); | ||
break; | ||
} | ||
} | ||
}; | ||
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/** | ||
* Checks if a message with the given level should be logged. | ||
* @private | ||
* @param {string} level - The logging level of the message. | ||
* @return {boolean} True if the message should be logged, false otherwise. | ||
*/ | ||
Logger.prototype.shouldLog = function(level) { | ||
if (this.level_ === 'none') { | ||
return false; | ||
} | ||
let currentLevelIndex = this.levelsOrdered.indexOf(this.level_); | ||
let logLevelIndex = this.levelsOrdered.indexOf(level); | ||
return logLevelIndex >= currentLevelIndex; | ||
}; | ||
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/** | ||
* Logs an info message to the console. | ||
* @private | ||
* @param {Array} args - The message to log. | ||
*/ | ||
Logger.prototype.logInfo_ = function(args) { | ||
console.info.apply(console, args); | ||
}; | ||
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/** | ||
* Logs a warning message to the console. | ||
* @private | ||
* @param {Array} args - The message to log. | ||
*/ | ||
Logger.prototype.logWarning_ = function(args) { | ||
console.warn.apply(console, args); | ||
}; | ||
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/** | ||
* Logs an error message to the console. | ||
* @private | ||
* @param {Array} args - The message to log. | ||
*/ | ||
Logger.prototype.logError_ = function(args) { | ||
console.error.apply(console, args); | ||
}; | ||
// jscs:enable validateIndentation | ||
|
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Since this is a wrapper over the native
console
, should we include a tag or namespace likeBranchSDK
, so that messages emitted from this logger are easily filterable?There was a problem hiding this comment.
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something like
BranchSDK::<error message>
?