80 lines
2.2 KiB
JavaScript
80 lines
2.2 KiB
JavaScript
'use strict';
|
|
|
|
const _ = require('lodash');
|
|
const assert = require('assert');
|
|
const util = require('util');
|
|
|
|
const Base = require('./Base');
|
|
const consts = require('../constants');
|
|
const EntryContext = require('../contexts/EntryContext');
|
|
const normalizeComponent = require('../common').normalizeComponent;
|
|
|
|
class Tracer extends Base {
|
|
constructor(logContext, location) {
|
|
super(logContext, resolveLocation(location), consts.TRACE_LEVELS, consts.DEFAULT_LEVELS.TRACER);
|
|
}
|
|
}
|
|
|
|
Object.keys(consts.TRACE_LEVELS).forEach(function (level) {
|
|
Tracer.prototype[level] = function () {
|
|
if (!this.isEnabled(level)) {
|
|
return;
|
|
}
|
|
|
|
const ctx = new EntryContext(this._logContext, {
|
|
type: 'trace',
|
|
loggingToolName: 'nodejs-tracer',
|
|
component: this._component,
|
|
level,
|
|
messageArgs: arguments,
|
|
addStack: true
|
|
});
|
|
|
|
// eslint-disable-next-line no-console
|
|
console.error(this._formatters.trace.format(ctx));
|
|
};
|
|
});
|
|
|
|
Tracer.prototype.entering = function (fnName) {
|
|
checkFunctionName(fnName);
|
|
var message = 'Entering function "' + fnName + '"';
|
|
if (arguments.length > 1) {
|
|
message += ' with arguments: ';
|
|
message += Array.prototype.slice.call(arguments, 1).map(util.inspect).join(', ');
|
|
}
|
|
this.path(message);
|
|
};
|
|
|
|
Tracer.prototype.exiting = function (fnName) {
|
|
checkFunctionName(fnName);
|
|
var message = 'Exiting function "' + fnName + '"';
|
|
if (arguments.length > 1) {
|
|
message += ' with result: ' + util.inspect(arguments[1]);
|
|
}
|
|
this.path(message);
|
|
};
|
|
|
|
Tracer.prototype.throwing = function (fnName, error) {
|
|
checkFunctionName(fnName);
|
|
var message = 'Function "' + fnName + '" throwing';
|
|
var args = error ? [error, message] : [message];
|
|
this.path.apply(this, args);
|
|
};
|
|
|
|
Tracer.prototype.catching = function (fnName, error) {
|
|
checkFunctionName(fnName);
|
|
var message = 'Function "' + fnName + '" catching';
|
|
var args = error ? [error, message] : [message];
|
|
this.path.apply(this, args);
|
|
};
|
|
|
|
function resolveLocation(location) {
|
|
assert(_.isString(location), 'Location should be a string');
|
|
return normalizeComponent(location);
|
|
}
|
|
|
|
function checkFunctionName(fnName) {
|
|
assert(_.isString(fnName), 'Function name should be a string');
|
|
}
|
|
|
|
module.exports = Tracer;
|