Class BoxGrinder::S3Plugin
In: lib/boxgrinder-build/plugins/delivery/s3/s3-plugin.rb
lib/boxgrinder-build/plugins/delivery/s3/s3-plugin.rb
Parent: BasePlugin

Methods

Public Instance methods

[Source]

    # File lib/boxgrinder-build/plugins/delivery/s3/s3-plugin.rb, line 30
30:     def after_init
31:       register_supported_os("fedora", ['13', '14', '15', '16'])
32:       register_supported_os("centos", ['5', '6'])
33:       register_supported_os("rhel", ['5', '6'])
34:       register_supported_os("sl", ['5', '6'])
35: 
36:       @ami_build_dir = "#{@dir.base}/ami"
37:       @ami_manifest = "#{@ami_build_dir}/#{@appliance_config.name}.ec2.manifest.xml"
38:     end

[Source]

    # File lib/boxgrinder-build/plugins/delivery/s3/s3-plugin.rb, line 30
30:     def after_init
31:       register_supported_os("fedora", ['13', '14', '15', '16'])
32:       register_supported_os("centos", ['5', '6'])
33:       register_supported_os("rhel", ['5', '6'])
34:       register_supported_os("sl", ['5', '6'])
35: 
36:       @ami_build_dir = "#{@dir.base}/ami"
37:       @ami_manifest = "#{@ami_build_dir}/#{@appliance_config.name}.ec2.manifest.xml"
38:     end

[Source]

     # File lib/boxgrinder-build/plugins/delivery/s3/s3-plugin.rb, line 201
201:     def ami_by_manifest_key(ami_manifest_key)
202:       ami = @ec2.images.with_owner(@plugin_config['account_number']).
203:           filter("manifest-location","#{@plugin_config['bucket']}/#{ami_manifest_key.key}")
204:       return nil unless ami.any?
205:       ami.first
206:     end

[Source]

     # File lib/boxgrinder-build/plugins/delivery/s3/s3-plugin.rb, line 201
201:     def ami_by_manifest_key(ami_manifest_key)
202:       ami = @ec2.images.with_owner(@plugin_config['account_number']).
203:           filter("manifest-location","#{@plugin_config['bucket']}/#{ami_manifest_key.key}")
204:       return nil unless ami.any?
205:       ami.first
206:     end

[Source]

     # File lib/boxgrinder-build/plugins/delivery/s3/s3-plugin.rb, line 208
208:     def ami_key(appliance_name, path)
209:       base_path = "#{@s3helper.parse_path(path)}#{appliance_name}/#{@appliance_config.os.name}/#{@appliance_config.os.version}/#{@appliance_config.version}.#{@appliance_config.release}"
210: 
211:       return "#{base_path}/#{@appliance_config.hardware.arch}" unless @plugin_config['snapshot']
212: 
213:       @log.info "Determining snapshot name"
214:       snapshot = 1
215:       while @s3helper.stub_s3obj(@bucket, "#{base_path}-SNAPSHOT-#{snapshot}/#{@appliance_config.hardware.arch}/").exists?
216:         snapshot += 1
217:       end
218:       # Reuse the last key (if there was one)
219:       snapshot -=1 if snapshot > 1 and @plugin_config['overwrite']
220: 
221:       "#{base_path}-SNAPSHOT-#{snapshot}/#{@appliance_config.hardware.arch}"
222:     end

[Source]

     # File lib/boxgrinder-build/plugins/delivery/s3/s3-plugin.rb, line 208
208:     def ami_key(appliance_name, path)
209:       base_path = "#{@s3helper.parse_path(path)}#{appliance_name}/#{@appliance_config.os.name}/#{@appliance_config.os.version}/#{@appliance_config.version}.#{@appliance_config.release}"
210: 
211:       return "#{base_path}/#{@appliance_config.hardware.arch}" unless @plugin_config['snapshot']
212: 
213:       @log.info "Determining snapshot name"
214:       snapshot = 1
215:       while @s3helper.stub_s3obj(@bucket, "#{base_path}-SNAPSHOT-#{snapshot}/#{@appliance_config.hardware.arch}/").exists?
216:         snapshot += 1
217:       end
218:       # Reuse the last key (if there was one)
219:       snapshot -=1 if snapshot > 1 and @plugin_config['overwrite']
220: 
221:       "#{base_path}-SNAPSHOT-#{snapshot}/#{@appliance_config.hardware.arch}"
222:     end

[Source]

     # File lib/boxgrinder-build/plugins/delivery/s3/s3-plugin.rb, line 139
139:     def asset_bucket(create_if_missing = true, permissions = :private)
140:       @s3helper.bucket(:bucket => @plugin_config['bucket'],
141:         :create_if_missing => create_if_missing,
142:         :acl => permissions,
143:         :location_constraint => @s3_endpoints[@plugin_config['region']][:location]
144:       )
145:     end

[Source]

     # File lib/boxgrinder-build/plugins/delivery/s3/s3-plugin.rb, line 139
139:     def asset_bucket(create_if_missing = true, permissions = :private)
140:       @s3helper.bucket(:bucket => @plugin_config['bucket'],
141:         :create_if_missing => create_if_missing,
142:         :acl => permissions,
143:         :location_constraint => @s3_endpoints[@plugin_config['region']][:location]
144:       )
145:     end

[Source]

     # File lib/boxgrinder-build/plugins/delivery/s3/s3-plugin.rb, line 147
147:     def bundle_image(deliverables)
148:       if @plugin_config['snapshot']
149:         @log.debug "Removing bundled image from local disk..."
150:         FileUtils.rm_rf(@ami_build_dir)
151:       end
152: 
153:       return if File.exists?(@ami_build_dir)
154: 
155:       @log.info "Bundling AMI..."
156: 
157:       FileUtils.mkdir_p(@ami_build_dir)
158: 
159:       cmd_str = "euca-bundle-image --ec2cert #{File.dirname(__FILE__)}/src/cert-ec2.pem " <<
160:         "-i #{deliverables[:disk]} " <<
161:         "--kernel #{@plugin_config['kernel'] || @s3_endpoints[@plugin_config['region']][:kernel][@appliance_config.hardware.base_arch.intern][:aki]} " <<
162:         "-c #{@plugin_config['cert_file']} "<<
163:         "-k #{@plugin_config['key_file']} " <<
164:         "-u #{@plugin_config['account_number']} " <<
165:         "-r #{@appliance_config.hardware.base_arch} " <<
166:         "-d #{@ami_build_dir} "
167: 
168:       cmd_str << "--ramdisk #{@plugin_config['ramdisk']}" if @plugin_config['ramdisk']
169: 
170:       @exec_helper.execute(cmd_str, :redacted => [@plugin_config['account_number'], @plugin_config['key_file'], @plugin_config['cert_file']])
171: 
172:       @log.info "Bundling AMI finished."
173:     end

[Source]

     # File lib/boxgrinder-build/plugins/delivery/s3/s3-plugin.rb, line 147
147:     def bundle_image(deliverables)
148:       if @plugin_config['snapshot']
149:         @log.debug "Removing bundled image from local disk..."
150:         FileUtils.rm_rf(@ami_build_dir)
151:       end
152: 
153:       return if File.exists?(@ami_build_dir)
154: 
155:       @log.info "Bundling AMI..."
156: 
157:       FileUtils.mkdir_p(@ami_build_dir)
158: 
159:       cmd_str = "euca-bundle-image --ec2cert #{File.dirname(__FILE__)}/src/cert-ec2.pem " <<
160:         "-i #{deliverables[:disk]} " <<
161:         "--kernel #{@plugin_config['kernel'] || @s3_endpoints[@plugin_config['region']][:kernel][@appliance_config.hardware.base_arch.intern][:aki]} " <<
162:         "-c #{@plugin_config['cert_file']} "<<
163:         "-k #{@plugin_config['key_file']} " <<
164:         "-u #{@plugin_config['account_number']} " <<
165:         "-r #{@appliance_config.hardware.base_arch} " <<
166:         "-d #{@ami_build_dir} "
167: 
168:       cmd_str << "--ramdisk #{@plugin_config['ramdisk']}" if @plugin_config['ramdisk']
169: 
170:       @exec_helper.execute(cmd_str, :redacted => [@plugin_config['account_number'], @plugin_config['key_file'], @plugin_config['cert_file']])
171: 
172:       @log.info "Bundling AMI finished."
173:     end

US constraint is often represented as ’’ or nil

[Source]

     # File lib/boxgrinder-build/plugins/delivery/s3/s3-plugin.rb, line 225
225:     def constraint_equal?(a, b)
226:       [a, b].collect!{|c| c.nil? ? '': c}
227:       a == b
228:     end

US constraint is often represented as ’’ or nil

[Source]

     # File lib/boxgrinder-build/plugins/delivery/s3/s3-plugin.rb, line 225
225:     def constraint_equal?(a, b)
226:       [a, b].collect!{|c| c.nil? ? '': c}
227:       a == b
228:     end

[Source]

     # File lib/boxgrinder-build/plugins/delivery/s3/s3-plugin.rb, line 191
191:     def deregister_image(ami_manifest_key)
192:       if ami = ami_by_manifest_key(ami_manifest_key)
193:         @log.info "Preexisting image '#{ami.location}' for #{@appliance_config.name} will be de-registered, it had id: #{ami.id} (region: #{@plugin_config['region']})."
194:         ami.deregister
195:         @ec2helper.wait_for_image_death(ami)
196:       else # This occurs when the AMI is de-registered externally but the file structure is left intact in S3. In this instance, we simply overwrite and register the image as if it were "new".
197:         @log.debug "Possible dangling/unregistered AMI skeleton structure in S3, there is nothing to deregister"
198:       end
199:     end

[Source]

     # File lib/boxgrinder-build/plugins/delivery/s3/s3-plugin.rb, line 191
191:     def deregister_image(ami_manifest_key)
192:       if ami = ami_by_manifest_key(ami_manifest_key)
193:         @log.info "Preexisting image '#{ami.location}' for #{@appliance_config.name} will be de-registered, it had id: #{ami.id} (region: #{@plugin_config['region']})."
194:         ami.deregister
195:         @ec2helper.wait_for_image_death(ami)
196:       else # This occurs when the AMI is de-registered externally but the file structure is left intact in S3. In this instance, we simply overwrite and register the image as if it were "new".
197:         @log.debug "Possible dangling/unregistered AMI skeleton structure in S3, there is nothing to deregister"
198:       end
199:     end

[Source]

     # File lib/boxgrinder-build/plugins/delivery/s3/s3-plugin.rb, line 85
 85:     def execute
 86:       case @type
 87:         when :s3
 88:           upload_to_bucket(@previous_deliverables)
 89:         when :cloudfront
 90:           upload_to_bucket(@previous_deliverables, :public_read)
 91:         when :ami
 92:           ami_dir = ami_key(@appliance_config.name, @plugin_config['path'])
 93:           ami_manifest_key = @s3helper.stub_s3obj(@bucket, "#{ami_dir}/#{@appliance_config.name}.ec2.manifest.xml")
 94: 
 95:           @log.debug "Going to check whether s3 object exists"
 96: 
 97:           if ami_manifest_key.exists? and @plugin_config['overwrite']
 98:             @log.info "Object exists, attempting to deregister an existing image"
 99:             deregister_image(ami_manifest_key) # Remove existing image
100:             @s3helper.delete_folder(@bucket, ami_dir) # Avoid triggering dupe detection
101:           end
102: 
103:           if !ami_manifest_key.exists? or @plugin_config['snapshot']
104:             @log.info "Doing bundle/snapshot"
105:             bundle_image(@previous_deliverables)
106:             upload_image(ami_dir)
107:           end
108:           register_image(ami_manifest_key)
109:       end
110:     end

[Source]

     # File lib/boxgrinder-build/plugins/delivery/s3/s3-plugin.rb, line 85
 85:     def execute
 86:       case @type
 87:         when :s3
 88:           upload_to_bucket(@previous_deliverables)
 89:         when :cloudfront
 90:           upload_to_bucket(@previous_deliverables, :public_read)
 91:         when :ami
 92:           ami_dir = ami_key(@appliance_config.name, @plugin_config['path'])
 93:           ami_manifest_key = @s3helper.stub_s3obj(@bucket, "#{ami_dir}/#{@appliance_config.name}.ec2.manifest.xml")
 94: 
 95:           @log.debug "Going to check whether s3 object exists"
 96: 
 97:           if ami_manifest_key.exists? and @plugin_config['overwrite']
 98:             @log.info "Object exists, attempting to deregister an existing image"
 99:             deregister_image(ami_manifest_key) # Remove existing image
100:             @s3helper.delete_folder(@bucket, ami_dir) # Avoid triggering dupe detection
101:           end
102: 
103:           if !ami_manifest_key.exists? or @plugin_config['snapshot']
104:             @log.info "Doing bundle/snapshot"
105:             bundle_image(@previous_deliverables)
106:             upload_image(ami_dir)
107:           end
108:           register_image(ami_manifest_key)
109:       end
110:     end

[Source]

     # File lib/boxgrinder-build/plugins/delivery/s3/s3-plugin.rb, line 181
181:     def register_image(ami_manifest_key)
182:       if ami = ami_by_manifest_key(ami_manifest_key)
183:         @log.info "Image for #{@appliance_config.name} is already registered under id: #{ami.id} (region: #{@plugin_config['region']})."
184:       else
185:         ami = @ec2.images.create(:image_location =>  "#{@plugin_config['bucket']}/#{ami_manifest_key.key}")
186:         @ec2helper.wait_for_image_state(:available, ami)
187:         @log.info "Image for #{@appliance_config.name} successfully registered under id: #{ami.id} (region: #{@plugin_config['region']})."
188:       end
189:     end

[Source]

     # File lib/boxgrinder-build/plugins/delivery/s3/s3-plugin.rb, line 181
181:     def register_image(ami_manifest_key)
182:       if ami = ami_by_manifest_key(ami_manifest_key)
183:         @log.info "Image for #{@appliance_config.name} is already registered under id: #{ami.id} (region: #{@plugin_config['region']})."
184:       else
185:         ami = @ec2.images.create(:image_location =>  "#{@plugin_config['bucket']}/#{ami_manifest_key.key}")
186:         @ec2helper.wait_for_image_state(:available, ami)
187:         @log.info "Image for #{@appliance_config.name} successfully registered under id: #{ami.id} (region: #{@plugin_config['region']})."
188:       end
189:     end

[Source]

     # File lib/boxgrinder-build/plugins/delivery/s3/s3-plugin.rb, line 175
175:     def upload_image(ami_dir)
176:       @log.info "Uploading #{@appliance_config.name} AMI to bucket '#{@plugin_config['bucket']}'..."
177: 
178:       @exec_helper.execute("euca-upload-bundle -U #{@plugin_config['url'].nil? ? "http://#{@s3_endpoints[@plugin_config['region']][:endpoint]}" : @plugin_config['url']} -b #{@plugin_config['bucket']}/#{ami_dir} -m #{@ami_manifest} -a #{@plugin_config['access_key']} -s #{@plugin_config['secret_access_key']}", :redacted => [@plugin_config['access_key'], @plugin_config['secret_access_key']])
179:     end

[Source]

     # File lib/boxgrinder-build/plugins/delivery/s3/s3-plugin.rb, line 175
175:     def upload_image(ami_dir)
176:       @log.info "Uploading #{@appliance_config.name} AMI to bucket '#{@plugin_config['bucket']}'..."
177: 
178:       @exec_helper.execute("euca-upload-bundle -U #{@plugin_config['url'].nil? ? "http://#{@s3_endpoints[@plugin_config['region']][:endpoint]}" : @plugin_config['url']} -b #{@plugin_config['bucket']}/#{ami_dir} -m #{@ami_manifest} -a #{@plugin_config['access_key']} -s #{@plugin_config['secret_access_key']}", :redacted => [@plugin_config['access_key'], @plugin_config['secret_access_key']])
179:     end

[Source]

     # File lib/boxgrinder-build/plugins/delivery/s3/s3-plugin.rb, line 112
112:     def upload_to_bucket(previous_deliverables, permissions = :private)
113:       register_deliverable(
114:           :package => "#{@appliance_config.name}-#{@appliance_config.version}.#{@appliance_config.release}-#{@appliance_config.os.name}-#{@appliance_config.os.version}-#{@appliance_config.hardware.arch}-#{current_platform}.tgz"
115:       )
116: 
117:       # quick and dirty workaround to use @deliverables[:package] later in code
118:       FileUtils.mv(@target_deliverables[:package], @deliverables[:package]) if File.exists?(@target_deliverables[:package])
119: 
120:       PackageHelper.new(@config, @appliance_config, :log => @log, :exec_helper => @exec_helper).package(File.dirname(previous_deliverables[:disk]), @deliverables[:package])
121: 
122:       remote_path = "#{@s3helper.parse_path(@plugin_config['path'])}#{File.basename(@deliverables[:package])}"
123:       size_m = File.size(@deliverables[:package])/1024**2
124:       s3_obj = @s3helper.stub_s3obj(@bucket,remote_path.gsub(/^\//, '').gsub(/\/\//, ''))
125:       # Does it really exist?
126:       obj_exists = s3_obj.exists?
127: 
128:       if !obj_exists or @plugin_config['overwrite']
129:         @log.info "Will overwrite existing file #{remote_path}" if obj_exists and @plugin_config['overwrite']
130:         @log.info "Uploading #{File.basename(@deliverables[:package])} (#{size_m}MB) to '#{@plugin_config['bucket']}#{remote_path}' path..."
131:         s3_obj.write(:file => @deliverables[:package],
132:                         :acl => permissions)
133:         @log.info "Appliance #{@appliance_config.name} uploaded to S3."
134:       else
135:         @log.info "File '#{@plugin_config['bucket']}#{remote_path}' already uploaded, skipping."
136:       end
137:     end

[Source]

     # File lib/boxgrinder-build/plugins/delivery/s3/s3-plugin.rb, line 112
112:     def upload_to_bucket(previous_deliverables, permissions = :private)
113:       register_deliverable(
114:           :package => "#{@appliance_config.name}-#{@appliance_config.version}.#{@appliance_config.release}-#{@appliance_config.os.name}-#{@appliance_config.os.version}-#{@appliance_config.hardware.arch}-#{current_platform}.tgz"
115:       )
116: 
117:       # quick and dirty workaround to use @deliverables[:package] later in code
118:       FileUtils.mv(@target_deliverables[:package], @deliverables[:package]) if File.exists?(@target_deliverables[:package])
119: 
120:       PackageHelper.new(@config, @appliance_config, :log => @log, :exec_helper => @exec_helper).package(File.dirname(previous_deliverables[:disk]), @deliverables[:package])
121: 
122:       remote_path = "#{@s3helper.parse_path(@plugin_config['path'])}#{File.basename(@deliverables[:package])}"
123:       size_m = File.size(@deliverables[:package])/1024**2
124:       s3_obj = @s3helper.stub_s3obj(@bucket,remote_path.gsub(/^\//, '').gsub(/\/\//, ''))
125:       # Does it really exist?
126:       obj_exists = s3_obj.exists?
127: 
128:       if !obj_exists or @plugin_config['overwrite']
129:         @log.info "Will overwrite existing file #{remote_path}" if obj_exists and @plugin_config['overwrite']
130:         @log.info "Uploading #{File.basename(@deliverables[:package])} (#{size_m}MB) to '#{@plugin_config['bucket']}#{remote_path}' path..."
131:         s3_obj.write(:file => @deliverables[:package],
132:                         :acl => permissions)
133:         @log.info "Appliance #{@appliance_config.name} uploaded to S3."
134:       else
135:         @log.info "File '#{@plugin_config['bucket']}#{remote_path}' already uploaded, skipping."
136:       end
137:     end

[Source]

    # File lib/boxgrinder-build/plugins/delivery/s3/s3-plugin.rb, line 40
40:     def validate
41:       set_default_config_value('overwrite', false)
42:       set_default_config_value('kernel', false)
43:       set_default_config_value('ramdisk', false)
44:       set_default_config_value('path', '/')
45:       set_default_config_value('region', 'us-east-1')
46:       validate_plugin_config(['bucket', 'access_key', 'secret_access_key'], 'http://boxgrinder.org/tutorials/boxgrinder-build-plugins/#S3_Delivery_Plugin')
47: 
48:       subtype(:ami) do
49:         set_default_config_value('snapshot', false)
50:         validate_plugin_config(['cert_file', 'key_file', 'account_number'], 'http://boxgrinder.org/tutorials/boxgrinder-build-plugins/#S3_Delivery_Plugin')
51: 
52:         raise PluginValidationError, "AWS certificate file doesn't exists, please check the path: '#{@plugin_config['cert_file']}'." unless File.exists?(File.expand_path(@plugin_config['cert_file']))
53:         raise PluginValidationError, "AWS key file doesn't exists, please check the path: '#{@plugin_config['key_file']}'." unless File.exists?(File.expand_path(@plugin_config['key_file']))
54:       end
55: 
56:       @s3_endpoints = S3Helper::endpoints
57:       raise PluginValidationError, "Invalid region specified: #{@plugin_config['region']}. This plugin is only aware of the following regions: #{@s3_endpoints.keys.join(", ")}." unless @s3_endpoints.has_key?(@plugin_config['region'])
58: 
59:       @plugin_config['account_number'] = @plugin_config['account_number'].to_s.gsub(/-/, '')
60: 
61:       # Set global AWS configuration
62:       AWS.config(:access_key_id => @plugin_config['access_key'],
63:         :secret_access_key => @plugin_config['secret_access_key'],
64:         :ec2_endpoint => EC2Helper::endpoints[@plugin_config['region']][:endpoint],
65:         :s3_endpoint => @s3_endpoints[@plugin_config['region']][:endpoint],
66:         :max_retries => 5,
67:         :use_ssl => @plugin_config['use_ssl'])
68: 
69:       @ec2 = AWS::EC2.new
70:       @s3 = AWS::S3.new
71:       @s3helper = S3Helper.new(@ec2, @s3, :log => @log)
72:       @ec2helper = EC2Helper.new(@ec2, :log => @log)
73: 
74:       subtype(:ami) do
75:         # If there is an existing bucket, determine whether its location_constraint matches the region selected
76:         if existing_bucket = asset_bucket(false)
77:           raise PluginValidationError, "Existing bucket #{@plugin_config['bucket']} has a location constraint that does not match the region selected. " <<
78:           "AMI region and bucket location constraint must match." unless constraint_equal?(@s3_endpoints[@plugin_config['region']][:location], existing_bucket.location_constraint)
79:         end
80:       end
81: 
82:       @bucket = asset_bucket(true)
83:     end

[Source]

    # File lib/boxgrinder-build/plugins/delivery/s3/s3-plugin.rb, line 40
40:     def validate
41:       set_default_config_value('overwrite', false)
42:       set_default_config_value('kernel', false)
43:       set_default_config_value('ramdisk', false)
44:       set_default_config_value('path', '/')
45:       set_default_config_value('region', 'us-east-1')
46:       validate_plugin_config(['bucket', 'access_key', 'secret_access_key'], 'http://boxgrinder.org/tutorials/boxgrinder-build-plugins/#S3_Delivery_Plugin')
47: 
48:       subtype(:ami) do
49:         set_default_config_value('snapshot', false)
50:         validate_plugin_config(['cert_file', 'key_file', 'account_number'], 'http://boxgrinder.org/tutorials/boxgrinder-build-plugins/#S3_Delivery_Plugin')
51: 
52:         raise PluginValidationError, "AWS certificate file doesn't exists, please check the path: '#{@plugin_config['cert_file']}'." unless File.exists?(File.expand_path(@plugin_config['cert_file']))
53:         raise PluginValidationError, "AWS key file doesn't exists, please check the path: '#{@plugin_config['key_file']}'." unless File.exists?(File.expand_path(@plugin_config['key_file']))
54:       end
55: 
56:       @s3_endpoints = S3Helper::endpoints
57:       raise PluginValidationError, "Invalid region specified: #{@plugin_config['region']}. This plugin is only aware of the following regions: #{@s3_endpoints.keys.join(", ")}." unless @s3_endpoints.has_key?(@plugin_config['region'])
58: 
59:       @plugin_config['account_number'] = @plugin_config['account_number'].to_s.gsub(/-/, '')
60: 
61:       # Set global AWS configuration
62:       AWS.config(:access_key_id => @plugin_config['access_key'],
63:         :secret_access_key => @plugin_config['secret_access_key'],
64:         :ec2_endpoint => EC2Helper::endpoints[@plugin_config['region']][:endpoint],
65:         :s3_endpoint => @s3_endpoints[@plugin_config['region']][:endpoint],
66:         :max_retries => 5,
67:         :use_ssl => @plugin_config['use_ssl'])
68: 
69:       @ec2 = AWS::EC2.new
70:       @s3 = AWS::S3.new
71:       @s3helper = S3Helper.new(@ec2, @s3, :log => @log)
72:       @ec2helper = EC2Helper.new(@ec2, :log => @log)
73: 
74:       subtype(:ami) do
75:         # If there is an existing bucket, determine whether its location_constraint matches the region selected
76:         if existing_bucket = asset_bucket(false)
77:           raise PluginValidationError, "Existing bucket #{@plugin_config['bucket']} has a location constraint that does not match the region selected. " <<
78:           "AMI region and bucket location constraint must match." unless constraint_equal?(@s3_endpoints[@plugin_config['region']][:location], existing_bucket.location_constraint)
79:         end
80:       end
81: 
82:       @bucket = asset_bucket(true)
83:     end

[Validate]