Dynect fog

[ayashjorden]

Rewrite DynECT provider to support multiple contnet items for certain record name, e.g. different IPs pointing the same address, thus utilizing DNS round-robin ability.

[ayashjorden]

Hi @charlesdunbar, Can I ask you to take a look at this?

Thank you, Yarden

[charlesdunbar]

Thanks for this PR! Switching to fog has been on my back burner for a while - will take a look at this sometime this week.

[charlesdunbar]

The main issue I'm seeing with this is the removal of self.prefetch. As discussed in https://github.com/puppetlabs/puppetlabs-dns/pull/4#discussion_r28732262, without it, for every record that's managed you'll be grabbing the zone file over and over again.

[ayashjorden]

I understand, something like this ?

I need to read more about prefetch....

[charlesdunbar]

Slightly - We can't really use "instances" since for this case, instances would be what Dyn sees, which we can't check because by the time you run "instances" - you don't have the credentials available to pass to Dyn.

http://garylarizza.com/blog/2013/12/15/seriously-what-is-this-provider-doing/ has some good information about reading up on prefetch.

I'll probably have to go through this again since I haven't looked at this code in about a year, but I highly recommend adding require 'ruby-debug'; debugger in-line to see the prefetch method in action on the master branch. You're able to go line-by-line when you hit the debugger line, and print any variables at the time.

I should have some time tonight to refresh myself on the code and see if I can help flesh out a new prefetch.

[ayashjorden]

Hi @charlesdunbar , I've read the link you provided about prefetch and also additional articles I've found on the web and things aren't clear yet.

Another somewhat related issue is that fog-dynect gem is missing zone and records TTL attribute when pulling data from DynECT. I've submitted a PR, hope to get it released soon.

Regarding the flush method implementation, I should call r.save only once as it publishs the DNS zone applyin TTL changes to all records under a node (node.name.domain.com.)

[ayashjorden]

Hi @charlesdunbar, The fog-dynect gem Accepted my PR and released v0.2.0 :+1:

I've also fixed the issue with calling save only once.

We're left with the prefetch implementation issue. I've read the code from master and it fetches each record's state from DynECT. the instances method does nothing.

On dynect_fog branch, instances method just creates the resources' instances. Sync-ing the resources' state is done in the flush method.

Can you elaborate on the desired role of the prefetch method in the dynect_fog context?

Thank you, Yarden

[ayashjorden]

Hi @charlesdunbar, Any update regarding prefetch?

[ayashjorden]

Hi again @charlesdunbar, On IRC, Dominic explained:

[12:54:09] <Dominic> yardenbar: data about every instance of the resource already on the node (e.g. every package currently installed, every service configured)

I'll work on it :) Appreciate your comment...

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