Initial commit of Pingdom Agent. Grabs Pingdom checks to pass along to other agents.

[viable-hartman]

I use the memory hash to store the last Pingdom check and only create events if the status has changed from the previous check in. I've been running this internally for the last couple days without any issue, and its been updating agents it sources perfectly.

I've provided real data from my Pingdom queries in the rspec, so all should be well.

[coveralls]

Coverage decreased (-0.04%) when pulling ffeed80 on viable-hartman:Pingdom_Agent into 577b95f on cantino:master.

[coveralls]

Coverage decreased (-0.04%) when pulling 7f186ad on viable-hartman:Pingdom_Agent into 577b95f on cantino:master.

[0xdevalias]

@viable-hartman Sounds cool!
@cantino / @dsander It seems across the agents there are a number of different web access methods (eg rest-client) in use. Do you think there's a nice way to abstract this? Ideally in a pluggable way?

[viable-hartman]

There is always a way; I'll help look into it in my spare time.

[cantino]

@alias1 @viable-hartman faraday is probably the right way to abstract it, as it takes many backends and we already require it.

[cantino]

If you can, let's use faraday or typhoeus instead and not add a new dependency.

[cantino]

Thanks @viable-hartman! This is a cool idea for an Agent, and I like your specs!

Couple things:

• We've recently added a credential Liquid tag in Added a liquid tag to access user credentials #348. Perhaps pingdom_apikey could be set to {% credential pingdom_api_key %} by default, so users know that they could make that pingdom_api_key Credential, or they could paste in their api key directly if they want to. (/cc @dsander what do you think?) You'll need to make sure you're Liquid parsing that value then.
• (minor) indention should be 2 spaces

[dsander]

I think its a good idea to use the liquid filter.

@viable-hartman If you want to go with it you need to include LiquidInterpolatable to you agent
include LiquidInterpolatable and use the interpolate_string method like this interpolate_string(options['pingdom_apikey'], {})

[cantino]

If you merge in master, you should be able to just use interpolated now instead of option to get Liquid interpolation for free.

[cantino]

Hey @viable-hartman, are you still planning to work on this? If not, I might try to get it updated.