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Added logic to serialize Error objects correctly

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This should fix #97.
This commit is contained in:
Emile Cantin 2013-09-26 14:55:20 -04:00
parent 093f693232
commit abdba8e56f
4 changed files with 26 additions and 1 deletions
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10
lib/appenders/clustered.js
View File

@ -7,6 +7,14 @@ var log4js = require('../log4js');
* Takes a loggingEvent object, returns string representation of it.
*/
function serializeLoggingEvent(loggingEvent) {
// JSON.stringify(new Error('test')) returns {}, which is not really useful for us.
// The following allows us to serialize errors correctly.
for (var i = 0; i < loggingEvent.data.length; i++) {
var item = loggingEvent.data[i];
if (item && item.stack && JSON.stringify(item) === '{}') { // Validate that we really are in this case
loggingEvent.data[i] = {stack : item.stack};
}
}
return JSON.stringify(loggingEvent);
}
@ -115,4 +123,4 @@ function configure(config, options) {
}
exports.appender = createAppender;
exports.configure = configure;
exports.configure = configure;

5
lib/appenders/multiprocess.js
View File

@ -94,6 +94,11 @@ function workerAppender(config) {
}
function write(loggingEvent) {
// JSON.stringify(new Error('test')) returns {}, which is not really useful for us.
// The following allows us to serialize errors correctly.
if (loggingEvent && loggingEvent.stack && JSON.stringify(loggingEvent) === '{}') { // Validate that we really are in this case
loggingEvent = {stack : loggingEvent.stack};
}
socket.write(JSON.stringify(loggingEvent), 'utf8');
socket.write(END_MSG, 'utf8');
}

7
test/clusteredAppender-test.js
View File

@ -97,6 +97,7 @@ vows.describe('log4js cluster appender').addBatch({
// 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,
@ -109,6 +110,12 @@ vows.describe('log4js cluster appender').addBatch({
"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) {
var expected = { stack: 'Error: Error test\n at Object.vows.describe.addBatch.when in worker mode.topic (/home/vagrant/log4js-node/test/clusteredAppender-test.js:100:53)\n at run (/home/vagrant/log4js-node/node_modules/vows/lib/vows/suite.js:134:35)\n at EventEmitter.Suite.runBatch.callback (/home/vagrant/log4js-node/node_modules/vows/lib/vows/suite.js:234:40)\n at EventEmitter.emit (events.js:126:20)\n at EventEmitter.vows.describe.options.Emitter.emit (/home/vagrant/log4js-node/node_modules/vows/lib/vows.js:237:24)\n at Suite.runBatch.topic (/home/vagrant/log4js-node/node_modules/vows/lib/vows/suite.js:169:45)\n at process.startup.processNextTick.process._tickCallback (node.js:245:9)' };
assert.equal(topic.registeredProcessEvents[1].type, '::log-message');
assert.equal(JSON.stringify(JSON.parse(topic.registeredProcessEvents[1].event).data[0]), JSON.stringify(expected));
}
}

5
test/multiprocess-test.js
View File

@ -75,6 +75,7 @@ vows.describe('Multiprocess Appender').addBatch({
appender('after error, before connect');
fakeNet.cbs.connect();
appender('after error, after connect');
appender(new Error('Error test'));
return fakeNet;
},
@ -98,6 +99,10 @@ vows.describe('Multiprocess Appender').addBatch({
assert.equal(net.data[6], JSON.stringify('after error, after connect'));
assert.equal(net.data[7], '__LOG4JS__');
assert.equal(net.createConnectionCalled, 2);
},
'should serialize an Error correctly': function(net) {
var expected = { stack: 'Error: Error test\n at Object.vows.describe.addBatch.worker.topic (/home/vagrant/log4js-node/test/multiprocess-test.js:78:13)\n at run (/home/vagrant/log4js-node/node_modules/vows/lib/vows/suite.js:134:35)\n at EventEmitter.Suite.runBatch.callback (/home/vagrant/log4js-node/node_modules/vows/lib/vows/suite.js:234:40)\n at EventEmitter.emit (events.js:126:20)\n at EventEmitter.vows.describe.options.Emitter.emit (/home/vagrant/log4js-node/node_modules/vows/lib/vows.js:237:24)\n at Suite.runBatch.topic (/home/vagrant/log4js-node/node_modules/vows/lib/vows/suite.js:169:45)\n at process.startup.processNextTick.process._tickCallback (node.js:245:9)' };
assert.equal(net.data[8], JSON.stringify(expected));
}
},
'worker with timeout': {