Add Resque.

[gphat]

What's this PR do?

This adds minimal Resque metrics integration to Datadog.

Motivation

Internal tools asked!

Notes

There's more we could do here, but I only did the minimum that was easy since that's what @preinheimer asked for. We can add more and iterate if we like!

How To Deploy

• Merge
• Add to our internal puppet, etc.

How to Measure Success

Look for resque.worker_count!

How to Rollback

Revert, merge, repeat How To Deploy

cc @preinheimer

[gphat]

It works!

2016-05-26 20:47:34,341 | WARNING | dd.collector | checks.disk(disk.py:76) | Using `use_mount` in datadog.conf has been deprecated in favor of `use_mount` in disk.yaml
2016-05-26 20:47:34,357 | INFO | dd.collector | config(config.py:899) | initialized checks.d checks: ['network', 'stripe_consul', 'process', 'ntp', 'resque', 'linux_proc_extras', 'dns_check', 'linux_vm_extras', 'file', 'redisdb', 'disk']
2016-05-26 20:47:34,357 | INFO | dd.collector | config(config.py:900) | initialization failed checks.d checks: []
2016-05-26 20:47:34,357 | INFO | dd.collector | checks.collector(collector.py:533) | Running check resque
Metrics:
[('resque.jobs_failed',
  1464295654,
  '5',
  {'hostname': 'qa-supportbox1.northwest.stripe.io', 'type': 'gauge'}),
 ('resque.queues_count',
  1464295654,
  1,
  {'hostname': 'qa-supportbox1.northwest.stripe.io', 'type': 'gauge'}),
 ('resque.worker_count',
  1464295654,
  1,
  {'hostname': 'qa-supportbox1.northwest.stripe.io', 'type': 'gauge'}),
 ('resque.jobs_processed',
  1464295654,
  '20',
  {'hostname': 'qa-supportbox1.northwest.stripe.io', 'type': 'gauge'})]
Events:
[]
Service Checks:
[]
Service Metadata:
[{}]
    resque
    ------
      - instance #0 [OK]
      - Collected 4 metrics, 0 events & 0 service checks

[preinheimer]

Huzzah!

[antifuchs]

One thing that I have found useful is issuing a service check here if the connection fails.

[antifuchs]

Looks great to me - I think we'll want to add that service check, but

LGTM

As a quick win!

[gphat]

Agreed. I'll make sure and follow up with service checks, tests and other iterative improvements.