parse stack template available parameters

devops-client/lib/devops-client/handler/stack_template.rb

@@ -28,6 +28,8 @@ class StackTemplate < Handler
       delete_handler
     when :update_url
       update_url_handler
+    when :update_available_parameters
+      update_available_parameters_handler
     end
   end
 
@@ -87,6 +89,16 @@ class StackTemplate < Handler
     puts stack_template['template_url']
   end
 
+  def update_available_parameters_handler
+    r = inspect_parameters @options_parser.update_url_params, @args[2]
+    unless r.nil?
+      @options_parser.invalid_update_url_command
+      abort(r)
+    end
+    stack_template = post "/stack_template/#{@args[2]}/update_available_parameters"
+    puts JSON.pretty_generate(stack_template['available_parameters'])
+  end
+
   def provider_stack_templates(provider)
     if Providers.has_functionality?(provider, :stack_templates)
       @provider = true

devops-client/lib/devops-client/options/stack_template_options.rb

@@ -2,7 +2,7 @@ require "devops-client/options/common_options"
 
 class StackTemplateOptions < CommonOptions
 
-  commands :create, :delete, :list, :show, :update_url
+  commands :create, :delete, :list, :show, :update_url, :update_available_parameters
 
   def initialize args, def_options
     super(args, def_options)
@@ -12,6 +12,7 @@ class StackTemplateOptions < CommonOptions
     self.show_params = ["STACK_TEMPLATE"]
     self.delete_params = ["STACK_TEMPLATE"]
     self.update_url_params = ["STACK_TEMPLATE"]
+    self.update_available_parameters_params = ["STACK_TEMPLATE"]
   end
 
   def create_options

devops-client/lib/devops-client/output/stack_template.rb

@@ -43,12 +43,11 @@ module Output
     end
 
     def create_show
-      rows = [ [ @data["id"], @data["provider"], @data["template_url"], @data["template_body"] ] ]
+      rows = [ [ @data["id"], @data["provider"], @data["template_url"] ] ]
       headers = [
         I18n.t("output.table_header.id"),
         I18n.t("output.table_header.provider"),
-        I18n.t("output.table_header.template_url"),
-        I18n.t("output.table_header.template_body")
+        I18n.t("output.table_header.template_url")
       ]
       return headers, rows
     end

devops-service/app/api2/handlers/stack_template.rb

@@ -47,6 +47,13 @@ module Devops
           template
         end
 
+        def update_available_parameters(id)
+          template = Devops::Db.connector.stack_template(id)
+          template.available_parameters = template.parse_parameters
+          Devops::Db.connector.stack_template_update(template)
+          template
+        end
+
         private
 
         # returns:

devops-service/app/api2/routes/stack_template.rb

@@ -22,11 +22,18 @@ module Devops
             create_response 'Created', model.to_hash, 201
           end
 
+          # Temp route just to process migration. Could be deleted safely
           app.post_with_headers "/stack_template/:id/update_template_url", :headers => [:accept] do |template_id|
             check_privileges('stack_template', 'w')
             json Devops::API2_0::Handler::StackTemplate.new(request).update_template_url(template_id).to_hash
           end
 
+          # Temp route just to process migration
+          app.post_with_headers "/stack_template/:id/update_available_parameters", :headers => [:accept] do |template_id|
+            check_privileges('stack_template', 'w')
+            json Devops::API2_0::Handler::StackTemplate.new(request).update_available_parameters(template_id).to_hash
+          end
+
           hash = {}
 
           hash['GET'] = lambda {|stack_template_id|

devops-service/db/mongo/models/stack_template/stack_template_base.rb

@@ -1,5 +1,3 @@
-require 'tempfile'
-require 'securerandom'
 require "db/mongo/models/model_with_provider"
 require "db/validators/stack_template/template_content"
 
@@ -10,6 +8,8 @@ module Devops
       include ModelWithProvider
 
       attr_accessor :id, :template_body, :provider, :owner
+      # should be a hash like {'param_name' => {type: 'String', description: 'Description'}}
+      attr_accessor :available_parameters
 
       types id: {type: String, empty: false},
             provider: {type: String, empty: false},
@@ -40,23 +40,31 @@ module Devops
         self.template_body = attrs['template_body']
         self.provider = attrs['provider']
         self.owner = attrs['owner']
+        self.available_parameters = attrs['available_parameters']
         self
       end
 
       def to_hash_without_id
         {
-          provider: provider,
-          template_body: template_body,
-          owner: owner
+          'provider' => provider,
+          'template_body' => template_body,
+          'owner' => owner,
+          'available_parameters' => available_parameters
         }
       end
 
+      def parse_parameters
+        {}
+      end
+
       # attrs should include:
       # - id (String)
       # - provider (String)
       # - template_body (String)
       def self.create(attrs)
-        new(attrs)
+        template = new(attrs)
+        template.available_parameters = template.parse_parameters
+        template
       end
 
       def self.build_from_bson(attrs)

devops-service/db/mongo/models/stack_template/stack_template_ec2.rb

@@ -1,3 +1,5 @@
+require 'securerandom'
+
 module Devops
   module Model
     class StackTemplateEc2 < StackTemplateBase
@@ -5,8 +7,6 @@ module Devops
       # In Amazon Cloudformation the template file must be stored on an Amazon S3 bucket.
       attr_accessor :template_url
 
-      # types template_url: {type: String, empty: false}
-
       def initialize(attrs)
         self.template_url = attrs['template_url']
         super(attrs)
@@ -16,12 +16,24 @@ module Devops
         super.merge(template_url: template_url)
       end
 
-      def delete_template_file_from_storage
-        raise 'Implement me'
+      def update_template_url
+        uniq_filename = "#{id}-#{SecureRandom.hex}.template"
+        s3_file = provider_instance.store_stack_template(uniq_filename, template_body)
+        self.template_url = s3_file['url']
       end
 
-      def update_template_url
-        self.template_url = generate_template_file_and_upload_to_storage(id, template_body)
+      def parse_parameters
+        template_hash = JSON.parse(template_body)
+        return {} unless template_hash['Parameters']
+
+        parameters = {}
+        template_hash['Parameters'].each do |param_name, param_info|
+          # use String always for now
+          parameters[param_name] = {'type' => 'String', 'description' => param_info['Description']}
+        end
+        parameters
+      rescue
+        {}
       end
 
       class << self
@@ -32,13 +44,6 @@ module Devops
         end
       end
 
-      private
-
-        def generate_template_file_and_upload_to_storage(id, json)
-          uniq_filename = "#{id}-#{SecureRandom.hex}.template"
-          provider_instance.store_stack_template(uniq_filename, json)['url']
-        end
-
     end
   end
 end

devops-service/spec/models/stack_template/shared_stack_template_specs.rb

@@ -14,7 +14,7 @@ RSpec.shared_examples 'stack template' do
 
   describe '#to_hash_without_id' do
     it 'returns hash with provider, template_body and owner' do
-      expect(stack_template.to_hash_without_id).to include(:provider, :template_body, :owner)
+      expect(stack_template.to_hash_without_id).to include('provider', 'template_body', 'owner')
     end
   end
 

devops-service/spec/models/stack_template/stack_template_ec2_spec.rb

@@ -23,4 +23,38 @@ RSpec.describe Devops::Model::StackTemplateEc2, type: :model do
     expect(described_class.create(params)).to be_an_instance_of(described_class)
   end
 
+  describe 'available parameters fetching' do
+    let(:template_body) { %q(
+        {
+          "Description" : "Example",
+
+          "Parameters" : {
+            "KeyName": {
+              "Description" : "Name of KeyPair",
+              "Type": "AWS::EC2::KeyPair::KeyName"
+            },
+           "SSHLocation" : {
+              "Type": "String",
+              "MinLength": "9"
+            }
+          }
+        }
+
+    ) }
+    let(:template_attributes) { FactoryGirl.attributes_for(:stack_template_ec2, template_body: template_body) }
+    let(:template) { described_class.create(template_attributes.stringify_keys) }
+
+    it 'fetches parameters from template body' do
+      expect(template.available_parameters).to be_a(Hash)
+      expect(template.available_parameters).to include('KeyName', 'SSHLocation')
+    end
+
+    it 'parses description' do
+      expect(template.available_parameters['KeyName']['description']).to eq 'Name of KeyPair'
+      expect(template.available_parameters['SSHLocation']['description']).to be nil
+    end
+  end
+
+
+
 end