jlecour · May 22, 2022 17:43 · Mar 28, 2014 · Mar 28, 2014
diff --git a/post_to_slack.rb b/post_to_slack.rb
@@ -62,7 +62,7 @@ def parse_options(argv)
   opts[:token]     ||= ENV.fetch('TOKEN') { '_your_token_' }
   opts[:status]    ||= ENV.fetch('STATUS') { 'unknown' }
   opts[:slack_url] ||= ENV.fetch('SLACK_URL') { "https://_you_.slack.com/services/hooks/incoming-webhook" }
-  opts[:monit_url] ||= NV.fetch('MONIT_URL') { "http://#{`hostname -f`.chomp}:2812/" }
+  opts[:monit_url] ||= ENV.fetch('MONIT_URL') { "http://#{`hostname -f`.chomp}:2812/" }
 
   opts[:color] ||= case opts[:status]
   when 'ok'

diff --git a/post_to_slack.rb b/post_to_slack.rb
@@ -0,0 +1,112 @@
+# encoding: UTF-8
+
+require 'optparse'
+require 'net/http'
+require 'json'
+
+def parse_options(argv)
+  opts = {}
+
+  @parser = OptionParser.new do |o|
+    o.on '--channel CHANNEL', "name of the channel to post to" do |arg|
+      opts[:channel] = arg
+    end
+
+    o.on '--name NAME', "name of the bot" do |arg|
+      opts[:name] = arg
+    end
+
+    o.on '--emoji EMOJI', "emoji icon" do |arg|
+      opts[:emoji] = arg
+    end
+
+    o.on '--token TOKEN', "authentication token" do |arg|
+      opts[:token] = arg
+    end
+
+    o.on '--status [error,ok]', "kind of message" do |arg|
+      opts[:status] = arg
+    end
+
+    o.on '--color #HEX_COLOR', "color of the message" do |arg|
+      opts[:color] = arg
+    end
+
+    o.on '--slack-url URL', "URL to post to" do |arg|
+      opts[:slack_url] = arg
+    end
+
+    o.on '--monit-url URL', "URL of Monit" do |arg|
+      opts[:monit_url] = arg
+    end
+
+    o.on '--text TEXT', "text of the message" do |arg|
+      opts[:text] = arg
+    end
+
+    o.on '--service SERVICE', "Monit service affected" do |arg|
+      opts[:service] = arg
+    end
+  end
+
+  @parser.banner = "post_to_slack [options]"
+  # @parser.on_tail "-h", "--help", "Show help" do
+  #   logger.info @parser
+  #   die 1
+  # end
+  @parser.parse!(argv)
+
+  opts[:channel]   ||= ENV.fetch('CHANNEL') { '#general' }
+  opts[:name]      ||= ENV.fetch('NAME') { 'Monit' }
+  opts[:emoji]     ||= ENV.fetch('EMOJI') { ':vertical_traffic_light:' }
+  opts[:token]     ||= ENV.fetch('TOKEN') { '_your_token_' }
+  opts[:status]    ||= ENV.fetch('STATUS') { 'unknown' }
+  opts[:slack_url] ||= ENV.fetch('SLACK_URL') { "https://_you_.slack.com/services/hooks/incoming-webhook" }
+  opts[:monit_url] ||= NV.fetch('MONIT_URL') { "http://#{`hostname -f`.chomp}:2812/" }
+
+  opts[:color] ||= case opts[:status]
+  when 'ok'
+    '#59A452'
+  when 'error'
+    '#d00000'
+  else
+    '#cccccc'
+  end
+
+  opts
+end
+
+def format_payload(opts = {})
+{
+  "channel" => opts[:channel],
+  "icon_emoji" => opts[:emoji],
+  "username" => opts[:name],
+  "text" => "Issue on #{`hostname`.chomp} : #{opts[:text]}",
+  "attachments" => [{
+    "fallback" => "#{opts[:text]}\n#{opts[:monit_url]}#{opts.fetch(:service){'#'}}",
+    "color" => opts[:color],
+    "fields" => [{
+      "title" => "Message",
+      "value" => opts[:text],
+      "short" => true
+    },{
+      "title" => "URL",
+      "value" => "<#{opts[:monit_url]}#{opts.fetch(:service){'#'}}|#{opts.fetch(:service){'?'}}>",
+      "short" => true
+    }]
+  }]
+}
+end
+
+def post(url, payload)
+  uri = URI.parse(url)
+  http = Net::HTTP.new(uri.host, uri.port)
+  http.use_ssl = true
+  http.post("#{uri.path}?#{uri.query}", payload.to_json)  
+end
+
+options = parse_options(ARGV)
+payload = format_payload(options)
+url = "#{options.fetch(:slack_url)}?token=#{options.fetch(:token)}"
+
+post(url, payload)
diff --git a/process.monit b/process.monit
@@ -0,0 +1,8 @@
+check process _process_name_
+  with pidfile /path/to/pidfile.pid
+  start program = "/path/to/start" as uid _user_ and gid _group_ with timeout 30 seconds
+  stop program = "/path/to/stop" as uid _user_ and gid _group_ with timeout 30 seconds
+  if does not exist for 1 cycle
+    then exec "/path/to/ruby /path/to/post_to_slack.rb --service _process_name_ --status error --text 'Process X is down'"
+    else if succeeded for 1 cycle then exec "/path/to/ruby /path/to/post_to_slack.rb --service _process_name_ --status ok --text 'Process X is up'"
+  group _process_group_
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