add run list validator

.gitignore

@@ -1 +1,2 @@
 devops-service/tests/features/support/config.yml
+.devops_files/

devops-service/db/mongo/models/deploy_env_base.rb

@@ -20,8 +20,7 @@ class DeployEnvBase < MongoModel
 
   def validate!
     super
-    e = DeployEnvBase.validate_run_list(self.run_list)
-    raise InvalidRecord.new "Invalid run list elements: '#{e.join("', '")}'" unless e.empty?
+    Validators::DeployEnv::RunList.new(self).validate!
 
     unless self.expires.nil?
       check_expires!(self.expires)
@@ -39,9 +38,4 @@ class DeployEnvBase < MongoModel
     }
   end
 
-  def self.validate_run_list list
-    rl = /\Arole|recipe\[[\w-]+(::[\w-]+)?\]\Z/
-    list.select {|l| (rl =~ l).nil?}
-  end
-
 end

devops-service/db/validators/all.rb

@@ -0,0 +1,8 @@
+module Validators
+  class Helpers; end
+  class DeployEnv; end
+end
+
+require "db/validators/base"
+require "db/validators/helpers/run_list"
+require "db/validators/deploy_env/run_list"

devops-service/db/validators/base.rb

@@ -0,0 +1,18 @@
+class Validators::Base
+
+  def initialize(model)
+    @model = model
+  end
+
+  def validate!
+    raise InvalidRecord.new(message) unless valid?
+  end
+
+  def valid?
+    raise 'override me'
+  end
+
+  def message
+    raise 'override me'
+  end
+end

devops-service/db/validators/deploy_env/run_list.rb

@@ -0,0 +1,20 @@
+# Use helper to avoid code duplication: we have run_list validation in server routes,
+# not only in deploy env model
+
+module Validators
+  class DeployEnv::RunList < Base
+
+    def initialize(model)
+      super(model)
+      @helper_validator = Helpers::RunList.new(@model.run_list)
+    end
+
+    def valid?
+      @helper_validator.valid?
+    end
+
+    def message
+      @helper_validator.message
+    end
+  end
+end

devops-service/db/validators/helpers/run_list.rb

@@ -0,0 +1,15 @@
+module Validators
+  class Helpers::RunList < Base
+
+    def valid?
+      rl = /\Arole|recipe\[[\w-]+(::[\w-]+)?\]\Z/
+      @invalid_elements = @model.select {|l| (rl =~ l).nil?}
+      @invalid_elements.empty?
+    end
+
+    def message
+      invalid_elements_as_string = @invalid_elements.join("', '")
+      "Invalid run list elements: '#{invalid_elements_as_string}'. Each element should be role or recipe."
+    end
+  end
+end

devops-service/devops-service.rb

@@ -9,6 +9,7 @@ $:.push File.dirname(__FILE__)
 require "db/exceptions/invalid_record"
 require "db/exceptions/record_not_found"
 require "db/mongo/mongo_connector"
+require "db/validators/all"
 require "providers/provider_factory"
 
 require "routes/v2.0"

devops-service/routes/v2.0/server.rb

@@ -396,8 +396,8 @@ module Version2_0
       name = check_string(body["name"], "Parameter 'name' should be a not empty string", true)
       rl = check_array(body["run_list"], "Parameter 'run_list' should be a not empty array of string", String, true)
       unless rl.nil?
-        e = DeployEnv.validate_run_list(rl)
-        halt_response("Invalid run list elements: '#{e.join("', '")}'") unless e.empty?
+        validator = Validators::Helpers::RunList.new(rl)
+        halt_response(validator.message) unless validator.valid?
       end
       t = check_string(body["bootstrap_template"], "Parameter 'bootstrap_template' should be a not empty string", true)
       s = BaseRoutes.mongo.server_by_instance_id(id)