async-deco - npm Package Compare versions

Comparing version 7.2.1 to 7.3.0

callback/log.js

package.json

		{
		"name": "async-deco",
		"version": "7.2.1",
		"version": "7.3.0",
		"description": "A collection of decorators for adding features to asynchronous functions (callback or promise based).",
		@@ -5,0 +5,0 @@ "main": "index.js",

promise/log.js

		var _log = require('../src/log');
		var wrapper = require('../src/promise-translator');

		function log() {
		return _log(wrapper);
		function log(prefix) {
		return _log(wrapper, prefix);
		}

		module.exports = log;

README.md

		@@ -164,3 +164,19 @@ async-deco
		```
		When using multiple decorator, it can be useful to attach this decorator multiple times, to give an insight about when the original function starts/ends and when the decorated function is called. To tell what log is called you can add a prefix to the logs. For example:
		```js
		var logDecorator = require('async-deco/callback/log');

		var addLogsToInnerFunction = logDecorator('inner-');
		var addLogsToOuterFunction = logDecorator('outer-');
		var cached = cacheDecorator(cache); // caching decorator

		var myfunc =
		addLogsToOuterFunction(
		cached(
		addLogsToInnerFunction(
		function (..., cb) { .... }));
		```
		In this example outer-log-start outer-log-end (or outer-log-error) will be always called. The inner logs only in case of cache miss.


		Memoize
		@@ -167,0 +183,0 @@ -------

src/log.js

		var defaultLogger = require('../utils/default-logger');

		function logDecorator(wrapper) {
		function logDecorator(wrapper, prefix) {
		prefix = prefix \|\| '';
		return wrapper(function (func) {
		@@ -13,3 +14,3 @@ return function () {
		if (err) {
		logger('log-error', {
		logger(prefix + 'log-error', {
		err: err
		@@ -19,3 +20,3 @@ });
		else {
		logger('log-end', {
		logger(prefix + 'log-end', {
		result: dep
		@@ -26,3 +27,3 @@ });
		};
		logger('log-start', {args: args.slice(0, -1), context: context});
		logger(prefix + 'log-start', {args: args.slice(0, -1), context: context});
		func.apply(context, args);
		@@ -29,0 +30,0 @@ };

tests/callback/log.spec.js

		@@ -24,2 +24,17 @@ var assert = require('chai').assert;

		it('must log success (use prefix)', function (done) {
		wrapped = logDecorator('prefix-');
		var f = addLog(wrapped(function (a, b, c, next) {
		next(undefined, a + b + c);
		}));
		f(1, 2, 3, function (err, dep) {
		assert.equal(dep, 6);
		assert.deepEqual(log, [
		{type: 'prefix-log-start', obj: {args: [1, 2, 3], context: log[0].obj.context}, key: 'key'},
		{type: 'prefix-log-end', obj: {result: 6}, key: 'key'}
		]);
		done();
		});
		});

		it('must log success', function (done) {
		@@ -26,0 +41,0 @@ var f = addLog(wrapped(function (a, b, c, next) {

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