dzimine

Troubleshoot a Rule

Scenario.

I set up a sensor to watch for a trigger (trigger represents an external event; sensor will fire a trigger-instance of the trigger type when the event is detected). I created a rule: if the trigger happens, and matches the criteria, it should fire an action. I see that event had happened. I expected the actions to fire. But it didn't happen. Where does it break?

This is a long read, and may look complicated. But really, it's just three debugging steps. And it's long because I refuse to write briefly, drop bunch of hints on the way and get you distracted. But as they say in math, the thicker the math book the faster it reads. Embrace yourself.

In the example below, I'll be using a case of tweeter to slack relay that we debugged last night exactly by this "runbook". The "runbook" is generic and applies to other rule debugging just fine.

dzimine

#!/bin/bash

function usage() {
  echo ""
  echo "Usage: $0"
  echo ""
  echo "Options:"
  echo "  -w  Run Windows tests"
  echo ""
  >&2

dzimine

{
  "architecture": "amd64",
  "author": "NGINX Docker Maintainers \"docker-maint@nginx.com\"",
  "config": {
    "Hostname": "609b1a101af3",
    "Domainname": "",
    "User": "",
    "AttachStdin": false,
    "AttachStdout": false,
    "AttachStderr": false,

dzimine

# -*- mode: ruby -*-
# vi: set ft=ruby :

hostname = ENV['HOSTNAME'] ? ENV['HOSTNAME'] : 'st2test'
ip_start=40

# Vagrantfile API/syntax version. Don't touch unless you know what you're doing!
VAGRANTFILE_API_VERSION = "2"

Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|

dzimine

{
    "sensu": [
        {
            "name": "Sensu",
            "host": "localhost",
            "ssl": false,
            "port": 4567,
            "path": "",
            "timeout": 5000
        }

dzimine

//opt/stackstorm/packs/default/actions/MyApp.java
// Used https://code.google.com/p/json-simple/, download and save as lib/json-simple-1.1.1.jar
import org.json.simple.JSONArray;
import org.json.simple.JSONObject;

class MyApp
{
   public static void main(String[] args)
   {
      JSONObject obj = new JSONObject();

dzimine

class WorkflowExecution(mb.MistralSecureModelBase):
    """Contains workflow execution information."""

    __tablename__ = 'executions_v2'

    id = mb.id_column()
    wf_name = sa.Column(sa.String(80))
    wf_spec = sa.Column(st.JsonDictType())
    start_params = sa.Column(st.JsonDictType())
    state = sa.Column(sa.String(20))

dzimine

# Description:
#   Runs a command on hubot
#   TOTAL VIOLATION of any and all security! 
#
# Commands:
#   hubot cmd <command> - runs a command on hubot host

module.exports = (robot) ->
  robot.respond /CMD (.*)$/i, (msg) ->
    # console.log(msg)

dzimine

Workflow:
  name: Compute node planned maintainance
  input: [ host, migrage_target_host]
  output: ''
  on-task-failure: std.continue #catch-all, just like exception handling...

  tasks:
    list-vms:
      action: ListVMs
      parameters: