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"use strict";
var assert = require('assert');
var vows = require('vows');
var layouts = require('../lib/layouts');
var sandbox = require('sandboxed-module');
var LoggingEvent = require('../lib/logger').LoggingEvent;
var cluster = require('cluster');
vows.describe('log4js cluster appender').addBatch({
'when in master mode': {
topic: function() {
var registeredClusterEvents = [];
var loggingEvents = [];
var onChildProcessForked;
var onMasterReceiveChildMessage;
// Fake cluster module, so no real cluster listeners be really added
var fakeCluster = {
on: function(event, callback) {
registeredClusterEvents.push(event);
onChildProcessForked = callback;
},
isMaster: true,
isWorker: false,
};
var fakeWorker = {
on: function(event, callback) {
onMasterReceiveChildMessage = callback;
},
process: {
pid: 123
},
id: 'workerid'
};
var fakeActualAppender = function(loggingEvent) {
loggingEvents.push(loggingEvent);
};
// Load appender and fake modules in it
var appenderModule = sandbox.require('../lib/appenders/clustered', {
requires: {
'cluster': fakeCluster,
}
});
var masterAppender = appenderModule.appender({
actualAppenders: [fakeActualAppender, fakeActualAppender, fakeActualAppender],
appenders: [{}, {category: "test"}, {category: "wovs"}]
});
// Actual test - log message using masterAppender
masterAppender(new LoggingEvent('wovs', 'Info', ['masterAppender test']));
// Simulate a 'fork' event to register the master's message handler on our fake worker.
onChildProcessForked(fakeWorker);
// Simulate a cluster message received by the masterAppender.
var simulatedLoggingEvent = new LoggingEvent(
'wovs',
'Error',
[
'message deserialization test',
{stack: 'my wrapped stack'}
]
);
onMasterReceiveChildMessage({
type : '::log-message',
event : JSON.stringify(simulatedLoggingEvent)
});
var returnValue = {
registeredClusterEvents: registeredClusterEvents,
loggingEvents: loggingEvents,
};
return returnValue;
},
"should register 'fork' event listener on 'cluster'": function(topic) {
assert.equal(topic.registeredClusterEvents[0], 'fork');
},
"should log using actual appender": function(topic) {
assert.equal(topic.loggingEvents.length, 4);
assert.equal(topic.loggingEvents[0].data[0], 'masterAppender test');
assert.equal(topic.loggingEvents[1].data[0], 'masterAppender test');
assert.equal(topic.loggingEvents[2].data[0], 'message deserialization test');
assert.equal(topic.loggingEvents[2].data[1], 'my wrapped stack');
assert.equal(topic.loggingEvents[3].data[0], 'message deserialization test');
assert.equal(topic.loggingEvents[3].data[1], 'my wrapped stack');
},
},
'when in worker mode': {
topic: function() {
var registeredProcessEvents = [];
// Fake cluster module, to fake we're inside a worker process
var fakeCluster = {
isMaster: false,
isWorker: true,
};
var fakeProcess = {
send: function(data) {
registeredProcessEvents.push(data);
},
};
// Load appender and fake modules in it
var appenderModule = sandbox.require('../lib/appenders/clustered', {
requires: {
'cluster': fakeCluster,
},
globals: {
'process': fakeProcess,
}
});
var workerAppender = appenderModule.appender();
// Actual test - log message using masterAppender
workerAppender(new LoggingEvent('wovs', 'Info', ['workerAppender test']));
workerAppender(new LoggingEvent('wovs', 'Info', [new Error('Error test')]));
var returnValue = {
registeredProcessEvents: registeredProcessEvents,
};
return returnValue;
},
"worker appender should call process.send" : function(topic) {
assert.equal(topic.registeredProcessEvents[0].type, '::log-message');
assert.equal(
JSON.parse(topic.registeredProcessEvents[0].event).data[0],
"workerAppender test"
);
},
"worker should serialize an Error correctly" : function(topic) {
assert.equal(topic.registeredProcessEvents[1].type, '::log-message');
assert(JSON.parse(topic.registeredProcessEvents[1].event).data[0].stack);
var actual = JSON.parse(topic.registeredProcessEvents[1].event).data[0].stack;
var expectedRegex = /^Error: Error test/;
assert(
actual.match(expectedRegex),
"Expected: \n\n " + actual + "\n\n to match " + expectedRegex
);
}
}
}).exportTo(module);
|
