Merge pull request forward3d#72 from masarakki/support-dotfile

support-dotfile

README.md

@@ -48,6 +48,7 @@ set :ec2_project_tag, 'Project'
 set :ec2_roles_tag, 'Roles'
 set :ec2_stages_tag, 'Stages'
 
+set :ec2_profile, 'myservice'       # use ~/.aws/credentials with profile_name
 set :ec2_access_key_id, nil
 set :ec2_secret_access_key, nil
 set :ec2_region, %w{} # REQUIRED
@@ -59,7 +60,7 @@ set :ec2_filter_by_status_ok?, nil
 #### Order of inheritance
 
 `cap-ec2` supports multiple methods of configuration. The order of inheritance is:
-YAML File > User Capistrano Config > Default Capistrano Config > ENV variables.
+YAML File > ~/.aws/credentials > User Capistrano Config > Default Capistrano Config > ENV variables.
 
 #### Regions
 

lib/cap-ec2/utils.rb

@@ -1,3 +1,5 @@
+require 'aws-sdk'
+
 module CapEC2
   module Utils
 
@@ -40,6 +42,14 @@ def self.contact_point(instance)
     end
 
     def load_config
+      if fetch(:ec2_profile)
+        credentials = Aws::SharedCredentials.new(profile_name: fetch(:ec2_profile)).credentials
+        if credentials
+          set :ec2_access_key_id, credentials.access_key_id
+          set :ec2_secret_access_key, credentials.secret_access_key
+        end
+      end
+
       config_location = File.expand_path(fetch(:ec2_config), Dir.pwd) if fetch(:ec2_config)
       if config_location && File.exists?(config_location)
         config = YAML.load_file fetch(:ec2_config)