Enable to use librato statD plugin through http/https proxy

[geisbruch]

Hi All, I've added the posibility to use the plugin through http/https proxy using the tunnel module for node.js. I am using my plugin version in production now and is running ok. (account arquitectura@mercadolibre.com)

[mheffner]

@geisbruch Thanks for the pull request. I'll take a look at this soon and get a version of this merged. I might look at making the tunnel include conditional based on the configuration.

[geisbruch]

Excelent, tell me if you have any question about the change.

[caevyn]

https://github.com/caevyn/statsd-librato-backend/commit/ba521eba9899895b685de9f7a534556a8864add2#lib/librato.js

I had to tweak the new config section a little for it to work. See the above link for my fork of geisbruch's fork.

[mheffner]

@geisbruch @caevyn Can you take a look at this PR. I made a slight change to the configuration format: https://github.com/librato/statsd-librato-backend/pull/14

[geisbruch]

It's sounds great, but if the proxy object has only one property maybe It's better set a proxy_url or some thing similar in the librato object to simplify the config. Example: { "librato" : { "proxy_uri" : "http://127.0.0.1:8080" } }

[caevyn]

Looks fine, I can't give it a test until next week but the conditional tunnel require looks like a good idea. I don't mind what the proxy config looks like, as long as it can be set easily. Hoping to start using librato in prod sooner than later:)

[mheffner]

@geisbruch I did the proxy config as a sub-section mainly in case we need to support some of the other proxy configuration variables in the future (proxy-specific auth variables, SSL settings/creds, etc.).

[geisbruch]

Perfect, so, could we merge this pull request?

[mheffner]

@geisbruch Done. I've merged PR #14