2018 Bojan Markovic
bmarkovic.79@gmail.com
This is a simple web service written in Node/Express that generates random JSON objects, and occasionally (statistics are chosen PRNG randomly) responds with a redirect or an error (4xx or 5xx).
The default statisical probabilities for different families of responses are given:
| Type | Percentage |
|---|---|
| 2xx | 75% |
| 3xx | 15% |
| 4xx | 10% |
| 5xx | 5% |
So that, in practice, about 3/4ths of all requests respond with a randomly generated JSON payload.
Install the dependencies with npm:
$ npm install
or yarn:
$ yarn
Then simply run the application:
$ npm run serve
or
$ node .
By default it listens on 9900, but you can supply the port
with the PORT environment variable:
$ PORT=9922 node .
And get more verbose output with:
$ DEBUG=1 node .
Default configuration is in the JS code, as:
global.defaultConfig = {
port: 9900,
perc300: 15,
perc400: 10,
perc500: 5
}This can be overridden with a config.json file
(or any JSON file given as an argument to the CLI
invocation)
$ node . my-config.json
The JSON equivalent of the above would be:
{
"port": 9900,
"perc300": 15,
"perc400": 10,
"perc500": 5
}A special API endpoint /stats i.e:
Will return a text/plain response like this:
Response statistics
-------------------
Total requests: 40
Responses by type:
2xx: 72.50%
3xx: 12.50%
4xx: 12.50%
5xx: 2.50%