/
metrics.js
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/
metrics.js
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var assert = require('assert');
var metricsIo = require('../lib/metrics');
var mongojs = require('mongojs');
var MONGO_URL = "mongodb://127.0.0.1:27017/test-chunk";
var COLLECTION = 'metrics';
var db = mongojs(MONGO_URL);
suite('Metrics', function() {
suite('.track()', function() {
test("tracking a metric", _clean(function(done) {
var mm = metricsIo(MONGO_URL, COLLECTION);
var name = 'the-name';
var value = 'the-value';
var source = 'the-source';
var date = new Date('2013 01 01 4:15:23');
mm.track(name, value, source, date, function(err) {
assert.equal(err, undefined);
db.collection(COLLECTION).findOne({name: name}, validateMetric);
});
function validateMetric(err, metric) {
assert.equal(err, undefined);
assert.equal(metric.name, name);
assert.equal(metric.value, value);
assert.equal(metric.source, source);
assert.equal(metric.date, date.getTime());
assert.deepEqual(metric.resolution, {
y: date.getUTCFullYear(),
mo: date.getUTCMonth(),
d: date.getUTCDate(),
h: date.getUTCHours(),
m: date.getUTCMinutes(),
s5: metricsIo._roundToNear(date.getUTCSeconds(), 5),
s: date.getUTCSeconds()
});
done();
}
}));
test("tracking a metric using the constructor", _clean(function(done) {
var mm = new metricsIo(MONGO_URL, COLLECTION);
var name = 'the-name';
var value = 'the-value';
var source = 'the-source';
var date = new Date('2013 01 01 4:15:23');
mm.track(name, value, source, date, function(err) {
assert.equal(err, undefined);
db.collection(COLLECTION).findOne({name: name}, validateMetric);
});
function validateMetric(err, metric) {
assert.equal(err, undefined);
assert.equal(metric.name, name);
assert.equal(metric.value, value);
assert.equal(metric.source, source);
assert.equal(metric.date, date.getTime());
assert.deepEqual(metric.resolution, {
y: date.getUTCFullYear(),
mo: date.getUTCMonth(),
d: date.getUTCDate(),
h: date.getUTCHours(),
m: date.getUTCMinutes(),
s5: metricsIo._roundToNear(date.getUTCSeconds(), 5),
s: date.getUTCSeconds()
});
done();
}
}));
});
suite('.aggregate()', function() {
test('metric avg, source sum, min resolution', _clean(function(done) {
var metrics = [
{name: 'mp3', value: 10, source: 'b1', date: new Date('2012 01 01 10:45 GMT')},
{name: 'mp3', value: 8, source: 'b2', date: new Date('2012 01 01 10:45 GMT')},
{name: 'mp3', value: 8, source: 'b1', date: new Date('2012 01 01 10:45 GMT')},
{name: 'mp3', value: 6, source: 'b2', date: new Date('2012 01 01 10:45 GMT')},
{name: 'other', value: 6, source: 'b2', date: new Date('2012 01 01 10:46 GMT')}
];
var mm = metricsIo(MONGO_URL, COLLECTION);
addBulkMetrics(mm, metrics, function(err) {
assert.equal(err, undefined);
mm.aggregate('mp3', 'minute', 'avg', 'sum', validateMetrics);
});
function validateMetrics(err, metrics) {
assert.equal(err, null);
assert.deepEqual(metrics, [{ _id: { y: 2012, mo: 0, m: 45, h: 10, d: 1 }, value: 16 }]);
done();
}
}));
test('metric sum, source avg, min resolution, 2 results', _clean(function(done) {
var metrics = [
{name: 'mp3', value: 10, source: 'b1', date: new Date('2012 01 01 10:45 GMT')},
{name: 'mp3', value: 8, source: 'b2', date: new Date('2012 01 01 10:45 GMT')},
{name: 'mp3', value: 8, source: 'b1', date: new Date('2012 01 01 10:46 GMT')},
{name: 'mp3', value: 6, source: 'b2', date: new Date('2012 01 01 10:46 GMT')},
{name: 'other', value: 6, source: 'b2', date: new Date('2012 01 01 10:46 GMT')}
];
var mm = metricsIo(MONGO_URL, COLLECTION);
addBulkMetrics(mm, metrics, function(err) {
assert.equal(err, undefined);
mm.aggregate('mp3', 'minute', 'sum', 'avg', validateMetrics);
});
function validateMetrics(err, metrics) {
assert.equal(err, null);
assert.deepEqual(metrics, [
{ _id: { y: 2012, mo: 0, m: 45, h: 10, d: 1 }, value: 9 },
{ _id: { y: 2012, mo: 0, m: 46, h: 10, d: 1 }, value: 7 },
]);
done();
}
}));
});
suite('.aggregateOnlyValues()', function() {
test('metric avg, all sources, min resolution', _clean(function(done) {
var metrics = [
{name: 'mp3', value: 10, source: 'b1', date: new Date('2012 01 01 10:45 GMT')},
{name: 'mp3', value: 8, source: 'b2', date: new Date('2012 01 01 10:45 GMT')},
{name: 'mp3', value: 8, source: 'b1', date: new Date('2012 01 01 10:45 GMT')},
{name: 'mp3', value: 6, source: 'b2', date: new Date('2012 01 01 10:45 GMT')},
{name: 'other', value: 6, source: 'b2', date: new Date('2012 01 01 10:46 GMT')}
];
var mm = metricsIo(MONGO_URL, COLLECTION);
addBulkMetrics(mm, metrics, function(err) {
assert.ifError(err);
mm.aggregateOnlyValues('mp3', 'minute', 'avg', [], validateMetrics);
});
function validateMetrics(err, metrics) {
assert.ifError(err);
var expectedResult = [
{ _id: { source: 'b1', date: { y: 2012, mo: 0, m: 45, h: 10, d: 1 }}, value: 9 },
{ _id: { source: 'b2', date: { y: 2012, mo: 0, m: 45, h: 10, d: 1 }}, value: 7 },
];
assert.deepEqual(metrics, expectedResult);
done();
}
}));
test('metric sum, only source b1, min resolution, 2 results', _clean(function(done) {
var metrics = [
{name: 'mp3', value: 10, source: 'b1', date: new Date('2012 01 01 10:45 GMT')},
{name: 'mp3', value: 8, source: 'b2', date: new Date('2012 01 01 10:45 GMT')},
{name: 'mp3', value: 8, source: 'b1', date: new Date('2012 01 01 10:45 GMT')},
{name: 'mp3', value: 6, source: 'b2', date: new Date('2012 01 01 10:45 GMT')},
{name: 'other', value: 6, source: 'b2', date: new Date('2012 01 01 10:46 GMT')}
];
var mm = metricsIo(MONGO_URL, COLLECTION);
addBulkMetrics(mm, metrics, function(err) {
assert.equal(err, undefined);
mm.aggregateOnlyValues('mp3', 'minute', 'sum', ['b1'], validateMetrics);
});
function validateMetrics(err, metrics) {
assert.equal(err, null);
var expectedResult = [
{ _id: { source: 'b1', date: { y: 2012, mo: 0, m: 45, h: 10, d: 1 }}, value: 18 }
];
assert.deepEqual(metrics, expectedResult);
done();
}
}));
});
suite('.identifySources()', function() {
test('without query', _clean(function(done) {
var metrics = [
{name: 'mp3', value: 10, source: 'b1', date: new Date('2012 01 01 10:45 GMT')},
{name: 'mp3', value: 8, source: 'b2', date: new Date('2012 01 01 10:45 GMT')},
{name: 'mp3', value: 8, source: 'b1', date: new Date('2012 01 01 10:45 GMT')},
{name: 'mp3', value: 6, source: 'b2', date: new Date('2012 01 01 10:45 GMT')},
{name: 'other', value: 6, source: 'b2', date: new Date('2012 01 01 10:46 GMT')}
];
var mm = metricsIo(MONGO_URL, COLLECTION);
addBulkMetrics(mm, metrics, function(err) {
assert.equal(err, undefined);
mm.identifySources('mp3', validateMetrics);
});
function validateMetrics(err, results) {
assert.equal(err, null);
results.sort(function(a, b) {
return a > b;
});
assert.deepEqual(results, ['b1', 'b2']);
done();
}
}));
test('with query', _clean(function(done) {
var metrics = [
{name: 'mp3', value: 10, source: 'b1', date: new Date('2012 01 01 10:45 GMT')},
{name: 'mp3', value: 8, source: 'b2', date: new Date('2013 01 01 10:45 GMT')},
{name: 'mp3', value: 8, source: 'b1', date: new Date('2012 01 01 10:45 GMT')},
{name: 'mp3', value: 6, source: 'b2', date: new Date('2013 01 01 10:45 GMT')},
{name: 'other', value: 6, source: 'b2', date: new Date('2012 01 01 10:46 GMT')}
];
var mm = metricsIo(MONGO_URL, COLLECTION);
addBulkMetrics(mm, metrics, function(err) {
assert.equal(err, undefined);
mm.identifySources('mp3', {date: {$lt: new Date('2012 12 31').getTime()}}, validateMetrics);
});
function validateMetrics(err, results) {
assert.equal(err, null);
results.sort(function(a, b) {
return a > b;
});
assert.deepEqual(results, ['b1']);
done();
}
}));
});
});
function addBulkMetrics (metricsTracker, metrics, callback) {
var count = 0;
(function doInsert(err) {
if(err) {
callback(err);
} else {
var metric = metrics[count++];
if(metric) {
metricsTracker.track(metric.name, metric.value, metric.source, metric.date, doInsert);
} else {
callback();
}
}
})();
}
function _clean(callback) {
return function(done) {
db.collection(COLLECTION).remove(afterRemoved);
function afterRemoved (err) {
if(err) {
throw err;
} else {
callback(done);
}
}
};
}