Hulken is a stress testing tool for everything speaking HTTP. Hulken supports multiple urls, GETs and POSTs, static and dynamic payloads, multiple agents and more. Hulken is highly configurable but defaults to some reasonable settings. Hulken works both as a library and a stand-alone command line tool. Hulken is swedish for The Hulk.
Hi!
I like to create stuff and share it with others.
...and sometimes my clients let me open source stuff i build for them as well!
for example:
slu-docbot
a QA bot using Retrieval-Augmented Generation (RAG), Redis, Semantic Search, OpenAI and Python.
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a proof-of-concept for using Postgres as an event stream with one or more producers and multiple consumers using topics and the NOTIFY and LISTEN commands.
I tried to add a more complex payload to hulken and found that it does not support non-string values due to it's randomize feature.
Sample playload:
[
{"method":"POST","path":"/foo","payload": {"value":1}}
]
And the error stack trace:
.\node_modules\hulken\lib\worker.js:147
if (propertyValue.substring(0, 2) == '::') {
^
TypeError: undefined is not a function
at Object.worker._setPostValues (.\node_modules\hulken\lib\worker.js:147:25)
at Object.worker._makePOSTrequest (.\node_modules\hulken\lib\worker.js:126:10)
at null._onTimeout (.\node_modules\hulken\lib\worker.js:105:24)
at Timer.listOnTimeout (timers.js:119:15)
Hi,
when I use the command line tool to test a simple CORS AJAX web service I get response times wrong by a factor of 50.
I tested with different web services, here is an example.
$ hulken bitcoin_options.json
setting options from file bitcoin_options.json
number of times to repeat each request set to 10
target url set to https://blockchain.info/ticker
request file path (including file name) set to ./bitcoin_request.json
the following characters (in an url) will cause a request to be skipped :,{,}
happyTimeLimit set to 10
numberOfHulkenAgents set to 1
slowRequestsTimeLimit set to 0.5
angryOnFailedRequest set to true
chatty set to true
happyMessage set to HULKEN PLEASED, YOU MAY CONTINUE WITH YOUR DAY!
angryMessage set to HULKEN ANGRY! HULKEN SMASH!
minWaitTime set to 500
maxWaitTime set to 4000
headers set to {"Accept":"application/json, text/javascript, */*; q=0.01","Accept-Encoding":"gzip, deflate, sdch","Accept-Language":"en,de;q=0.8,en-US;q=0.6,it;q=0.4","Cache-Control":"no-cache","Connection":"keep-alive","Pragma":"no-cache","User-Agent":"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.45 Safari/537.36"}
..::HULKEN SMASH::..
initiating agent 1 of 1
... no login required, continuing with anonymous user
... starting to execute requests
GET ?cors=true (by agent 1/1) responded in 8.494 seconds
GET ?cors=true (by agent 1/1) responded in 7.47 seconds
GET ?cors=true (by agent 1/1) responded in 7.398 seconds
GET ?cors=true (by agent 1/1) responded in 9.561 seconds
GET ?cors=true (by agent 1/1) responded in 9.27 seconds
GET ?cors=true (by agent 1/1) responded in 8.376 seconds
GET ?cors=true (by agent 1/1) responded in 7.283 seconds
GET ?cors=true (by agent 1/1) responded in 7.397 seconds
GET ?cors=true (by agent 1/1) responded in 9.067 seconds
GET ?cors=true (by agent 1/1) responded in 11.115 seconds
.. all requests have been executed
**************** RESULT ******************
number of concurrent requests 10
number of hulken agents running 1
number of unique requests 1
number of slow requests 10
number of failed requests 0
total seconds elapsed 15.058
avg response time (in seconds) 8.5431
req/sec 0.66
random request wait time (in seconds) 0.5-4
******************************************
HULKEN ANGRY! HULKEN SMASH!
In contrast when I employ the Chrome browser API using jQuery I get an average response time of 123ms. The browser cache is disabled and I confirmed that the 23 request in my test yielded unique api responses. The JavaScript measurement is consistent with the measured times in the Network panel of the Chrome developer tools.
Here is the simple code:
var
dT = 200,
varDT = 100;
function callingBC()
{
$.ajax("https://blockchain.info/ticker",
{
data: { cors: true },
dataType: "json"
})
.then((function(startTime)
{
return function( data, textStatus, jqXHR )
{
responseTimes.push(Date.now() - startTime);
if (!abort)
{
var waitFor = dT + Math.random() * varDT - varDT / 2;
setTimeout(callingBC, waitFor);
}
};
}(Date.now()))
, function( jqXHR, textStatus, errorThrown )
{
console.log(textStatus, errorThrown);
}
);
}What am I doing wrong?
Best regards
Semmel
Does this support uploading files (I can't see it in the documentation)? I want to test ~20mb file uploads
It would be helpful to be able to simply include the requests array inside an options.json file rather than requiring a reference another requests.json file for loading at runtime.
Providing this would:
export PATH="node_modules/.bin:$PATH")I recommend something like this:
if (hulken.settings.requests) {
hulken.requestsInfo = JSON.parse(hulken.settings.requests);
return worker._authenticateAgentsRecursive(0, worker._executeRequests);
}
fs.readFile(hulken.settings.requestsFilePath, 'utf-8', function(err, data) {
if (err) throw err;
hulken.requestsInfo = JSON.parse(data);
worker._authenticateAgentsRecursive(0, worker._executeRequests);
});
In place of this:
https://github.com/hellgrenj/hulken/blob/master/lib/worker.js#L16-L20
Authentication is done by a different service from my API.
I need to pass an authentication header value into my app for load testing. I'd love to see this as a configuration option to the paths.
The example:
"The requestsFile is a json file and looks like this."
“foo”: “bar”
}]
should be
“foo”: “bar”
}}]
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