logstashUDP-test.js
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"use strict";
var vows = require('vows')
, assert = require('assert')
, log4js = require('../lib/log4js')
, sandbox = require('sandboxed-module')
;
function setupLogging(category, options) {
var udpSent = {};
var fakeDgram = {
createSocket: function (type) {
return {
send: function(buffer, offset, length, port, host, callback) {
udpSent.date = new Date();
udpSent.host = host;
udpSent.port = port;
udpSent.length = length;
udpSent.offset = 0;
udpSent.buffer = buffer;
callback(undefined, length);
}
};
}
};
var logstashModule = sandbox.require('../lib/appenders/logstashUDP', {
requires: {
'dgram': fakeDgram
}
});
log4js.clearAppenders();
log4js.addAppender(logstashModule.configure(options), category);
return {
logger: log4js.getLogger(category),
results: udpSent
};
}
vows.describe('logstashUDP appender').addBatch({
'when logging with logstash via UDP': {
topic: function() {
var setup = setupLogging('myCategory', {
"host": "127.0.0.1",
"port": 10001,
"type": "logstashUDP",
"logType": "myAppType",
"category": "myLogger",
"fields": {
"field1": "value1",
"field2": "value2"
},
"layout": {
"type": "pattern",
"pattern": "%m"
}
});
setup.logger.log('trace', 'Log event #1');
return setup;
},
'an UDP packet should be sent': function (topic) {
assert.equal(topic.results.host, "127.0.0.1");
assert.equal(topic.results.port, 10001);
assert.equal(topic.results.offset, 0);
var json = JSON.parse(topic.results.buffer.toString());
assert.equal(json.type, 'myAppType');
var fields = {
field1: 'value1',
field2: 'value2',
level: 'TRACE'
};
assert.equal(JSON.stringify(json.fields), JSON.stringify(fields));
assert.equal(json.message, 'Log event #1');
// Assert timestamp, up to hours resolution.
var date = new Date(json['@timestamp']);
assert.equal(
date.toISOString().substring(0, 14),
topic.results.date.toISOString().substring(0, 14)
);
}
},
'when missing some options': {
topic: function() {
var setup = setupLogging('myLogger', {
"host": "127.0.0.1",
"port": 10001,
"type": "logstashUDP",
"category": "myLogger",
"layout": {
"type": "pattern",
"pattern": "%m"
}
});
setup.logger.log('trace', 'Log event #1');
return setup;
},
'it sets some defaults': function (topic) {
var json = JSON.parse(topic.results.buffer.toString());
assert.equal(json.type, 'myLogger');
assert.equal(JSON.stringify(json.fields), JSON.stringify({'level': 'TRACE'}));
}
},
'when extra fields provided': {
topic: function() {
var setup = setupLogging('myLogger', {
"host": "127.0.0.1",
"port": 10001,
"type": "logstashUDP",
"category": "myLogger",
"layout": {
"type": "dummy"
}
});
setup.logger.log('trace', 'Log event #1', {'extra1': 'value1', 'extra2': 'value2'});
return setup;
},'they should be added to fields structure': function (topic) {
var json = JSON.parse(topic.results.buffer.toString());
var fields = {'extra1': 'value1', 'extra2': 'value2', 'level': 'TRACE'};
assert.equal(JSON.stringify(json.fields), JSON.stringify(fields));
}
}
}).export(module);