Slackistrano

Send notifications to Slack about Capistrano deployments.

If you need Capistrano v2 support, check out capistrano-slack.

Requirements

Capistrano >= 3.1.0
Ruby >= 2.0
A Slack account

Installation

Add this line to your application's Gemfile:

gem 'slackistrano', require: false

And then execute:

$ bundle

Configuration

You have two options to notify a channel in Slack when you deploy:

Using Incoming WebHooks integration, offering more options but requires one of the five free integrations. This is the default option.
Using Slackbot, which will not use one of the five free integrations. Enable via the :slack_via_slackbot option.

In both case, you need to enable the integration inside Slack and get the token and/or webhook url that will be needed later.

Require the library in your application's Capfile:

require 'slackistrano'

If you post using Incoming Webhooks you need to set your webhook url in your application's config/deploy.rb:

set :slack_webhook, "https://hooks.slack.com/services/XXX/XXX/XXX"

If you choose to post using Slackbot you must set your team and and token in your application's config/deploy.rb:

set :slack_via_slackbot, true
set :slack_team, "supremegolf"
set :slack_token, "xxxxxxxxxxxxxxxxxxxxxxxx"

Optionally, override the other slack settings:

set :slack_icon_url,         -> { 'http://gravatar.com/avatar/885e1c523b7975c4003de162d8ee8fee?r=g&s=40' }
set :slack_icon_emoji,       -> { nil } # will override icon_url, Must be a string (ex: ':shipit:')
set :slack_channel,          -> { '#general' }
set :slack_channel_starting, -> { nil } # Channel to post to. Optional. Defaults to :slack_channel.
set :slack_channel_finished, -> { nil } # Channel to post to. Optional. Defaults to :slack_channel.
set :slack_channel_failed,   -> { nil } # Channel to post to. Optional. Defaults to :slack_channel.
set :slack_username,         -> { 'Slackistrano' }
set :slack_run_starting,     -> { true }
set :slack_run_finished,     -> { true }
set :slack_run_failed,       -> { true }
set :slack_msg_starting,     -> { "#{ENV['USER'] || ENV['USERNAME']} has started deploying branch #{fetch :branch} of #{fetch :application} to #{fetch :rails_env, 'production'}" }
set :slack_msg_finished,     -> { "#{ENV['USER'] || ENV['USERNAME']} has finished deploying branch #{fetch :branch} of #{fetch :application} to #{fetch :rails_env, 'production'}" }
set :slack_msg_failed,       -> { "#{ENV['USER'] || ENV['USERNAME']} failed to deploy branch #{fetch :branch} of #{fetch :application} to #{fetch :rails_env, 'production'}" }
set :slack_title_starting,   -> { nil }
set :slack_title_finished,   -> { nil }
set :slack_title_failed,     -> { nil }

Note: You may wish to disable one of the notifications if another service (ex: Honeybadger) also displays a deploy notification.

Test your setup by running:

$ cap production slack:deploy:starting
$ cap production slack:deploy:finished
$ cap production slack:deploy:failed

Usage

Deploy your application like normal and you should see messages in the channel you specified.

TODO

Notify about incorrect configuration settings.
Notify about unsuccessfull HTTP POSTs.

Contributing

Fork it
Create your feature branch (git checkout -b my-new-feature)
Commit your changes (git commit -am 'Add some feature')
Push to the branch (git push origin my-new-feature)
Create new Pull Request