Chaos patterns?

[simontabor]

Chaos Squirrel is super flexible, but that means there's quite a lot of code involved to set up and use all the attacks (example below).

Should we define a pattern to help configuring all attacks?

We could also consider reducing the verbosity of { createAttack: Attack.configure... } - maybe some helper like Runner.weightedAttack(1, Attack.configure)

const Runner = require('@dazn/chaos-squirrel-runner');
const chaosMiddleware = require('@dazn/chaos-squirrel-runner-middy');
const os = require('os');

const CPUAttack = require('@dazn/chaos-squirrel-attack-cpu');
const BackgroundCPUAttack = require('@dazn/chaos-squirrel-attack-cpu-background');
const MemoryAttack = require('@dazn/chaos-squirrel-attack-memory');
const BackgroundMemoryAttack = require('@dazn/chaos-squirrel-attack-memory-background');
const OpenFilesAttack = require('@dazn/chaos-squirrel-attack-open-files');
const DiskSpaceAttack = require('@dazn/chaos-squirrel-attack-disk-space');

const createRunner = Runner.configure({
  probability: 1,
  possibleAttacks: [
    {
      createAttack: CPUAttack.configure({
        allowLoopEvery: 10,
      }),
    },
    {
      createAttack: BackgroundCPUAttack.configure({
        threads: os.cpus().length,
      }),
    },
    {
      createAttack: MemoryAttack.configure({
        size: 512000000, // lambda configured memory size
      }),
    },
    {
      createAttack: BackgroundMemoryAttack.configure({
        size: 512000000, // lambda configured memory size
      }),
    },
    {
      createAttack: OpenFilesAttack.configure({
        number: 1024, // lambda limit is 1024 open files
      }),
    },
    {
      createAttack: DiskSpaceAttack.configure({
        size: 512000000, // 512mb (lambda tmp storage size)
      }),
    },
  ],
});

module.exports = chaosMiddleware({ createRunner });