ec2 instance enumeration

slack-aws/commands.rb

@@ -4,4 +4,5 @@
 require 'aws-sdk'
 require 'slack-aws/util/aws_client_response'
 require 'slack-aws/commands/s3'
+require 'slack-aws/commands/ec2'
 require 'slack-aws/commands/ops_works'

slack-aws/commands/ec2.rb

@@ -0,0 +1,34 @@
+module SlackAws
+  module Commands
+    # Do the AWS EC2 things
+    class EC2 < SlackRubyBot::Commands::Base
+      extend SlackAws::Util::AwsClientResponse
+
+      command 'ec2' do |client, data, match|
+        arguments = match['expression'].split.reject(&:blank?) if match.names.include?('expression')
+        case arguments && arguments.shift
+        when 'instances' then
+          reap = Aws::EC2::Client.new
+          instances = reap.describe_instances
+          instanceprofile = "\n*Summary*:\n"
+          instances.reservations.each do |reservation|
+            reservation.instances.each do |instance|
+              if instance.state.name != 'running'
+                next
+              end
+              instanceprofile =
+              "\n#{instanceprofile}\n
+              *Instance Identifier:* #{instance.instance_id}\n
+              *IP Address:* #{instance.public_ip_address}\n
+              *Image Identifier:* #{instance.image_id}\n
+              *Instance Type:* #{instance.instance_type}\n"
+            end
+          end
+          client.say(text: instanceprofile, channel: data.channel)
+        else
+          client.say(text: 'Syntax: aws ec2 [command], need `aws help`? Message @awsbot help.', channel: data.channel)
+        end
+      end
+    end
+  end
+end