Create temporary inventory when execute a playbook

app/models/service_ansible_playbook.rb

@@ -3,6 +3,7 @@ class ServiceAnsiblePlaybook < ServiceGeneric
 
   # A chance for taking options from automate script to override options from a service dialog
   def preprocess(action, add_options = {})
+    _log.info("Override with new options: #{add_options}") unless add_options.blank?
     save_job_options(action, add_options)
   end
 
@@ -38,30 +39,46 @@ def job(action)
     service_resources.find_by!(:name => action, :resource_type => 'OrchestrationStack').try(:resource)
   end
 
+  def postprocess(action)
+    hosts = options.fetch_path(job_option_key(action), :inventory)
+    delete_inventory(action) unless use_default_inventory?(hosts)
+  end
+
   private
 
   def get_job_options(action)
-    job_opts = options["#{action.downcase}_job_options".to_sym].deep_dup
-    credential_id = job_opts.delete(:credential_id)
-    job_opts[:credential] = Authentication.find(credential_id).manager_ref unless credential_id.blank?
+    job_opts = options[job_option_key(action)].deep_dup
 
+    # TODO: decryption may be needed
     job_opts
   end
 
   def save_job_options(action, overrides)
-    job_options = parse_dialog_options
-    job_options[:extra_vars] = (job_options[:extra_vars] || {}).merge(overrides[:extra_vars]) if overrides[:extra_vars]
-    job_options.merge!(overrides.except(:extra_vars))
+    job_options = options.fetch_path(:config_info, action.downcase.to_sym).slice(:hosts, :extra_vars)
+    job_options.deep_merge!(parse_dialog_options)
+    job_options.deep_merge!(overrides)
+
+    credential_id = job_options.delete(:credential_id)
+    job_options[:credential] = Authentication.find(credential_id).manager_ref unless credential_id.blank?
 
-    options["#{action.downcase}_job_options".to_sym] = job_options
+    hosts = job_options.delete(:hosts)
+    job_options[:inventory] = create_inventory_with_hosts(action, hosts).id unless use_default_inventory?(hosts)
+
+    # TODO: encryption my be needed
+    options[job_option_key(action)] = job_options
     save!
   end
 
+  def job_option_key(action)
+    "#{action.downcase}_job_options".to_sym
+  end
+
   def parse_dialog_options
     dialog_options = options[:dialog] || {}
+
     {
-      :credential_id => dialog_options['dialog_credential_id'],
-      :hosts         => dialog_options['dialog_hosts']
+      :credential_id => dialog_options['dialog_credential'],
+      :hosts         => dialog_options['dialog_hosts'].to_s.strip.presence
     }.compact.merge(extra_vars_from_dialog)
   end
 
@@ -73,4 +90,33 @@ def extra_vars_from_dialog
 
     params.blank? ? {} : {:extra_vars => params}
   end
+
+  def create_inventory_with_hosts(action, hosts)
+    manager(action).with_provider_connection do |connection|
+      connection.api.inventories.create!(:name => inventory_name(action), :organization => 1).tap do |inventory|
+        hosts.split(',').each do |host|
+          connection.api.hosts.create!(:name => host, :inventory => inventory.id)
+        end
+      end
+    end
+  end
+
+  def delete_inventory(action)
+    manager(action).with_provider_connection do |connection|
+      inventory_id = options.fetch_path(job_option_key(action), :inventory)
+      connection.api.inventories.find(inventory_id).destroy!
+    end
+  end
+
+  def manager(action)
+    job_template(action).manager
+  end
+
+  def inventory_name(action)
+    "#{job_template(action).name}_#{id}"
+  end
+
+  def use_default_inventory?(hosts)
+    hosts.blank? || hosts == 'localhost'
+  end
 end

app/models/service_template_ansible_playbook.rb

@@ -89,7 +89,7 @@ def self.build_parameter_list(name, description, info)
       :description              => description || '',
       :project                  => playbook.configuration_script_source.manager_ref,
       :playbook                 => playbook.name,
-      :inventory                => tower.inventory_root_groups.first.ems_ref,
+      :inventory                => tower.inventory_root_groups.find_by!(:name => 'Demo Inventory').ems_ref,
       :ask_variables_on_launch  => true,
       :ask_limit_on_launch      => true,
       :ask_inventory_on_launch  => true,

spec/models/service_ansible_playbook_spec.rb

@@ -1,8 +1,11 @@
 describe(ServiceAnsiblePlaybook) do
   let(:tower_job)      { FactoryGirl.create(:ansible_tower_job) }
   let(:tower_job_temp) { FactoryGirl.create(:ansible_configuration_script) }
-  let(:basic_service)  { FactoryGirl.create(:service_ansible_playbook, :options => dialog_options) }
+  let(:basic_service)  { FactoryGirl.create(:service_ansible_playbook, :options => config_info_options) }
+  let(:service)        { FactoryGirl.create(:service_ansible_playbook, :options => config_info_options.merge(dialog_options)) }
   let(:action)         { ResourceAction::PROVISION }
+  let(:credential_1)   { FactoryGirl.create(:authentication, :manager_ref => 'a') }
+  let(:credential_2)   { FactoryGirl.create(:authentication, :manager_ref => 'b') }
 
   let(:loaded_service) do
     service_template = FactoryGirl.create(:service_template_ansible_playbook)
@@ -12,40 +15,92 @@
   end
 
   let(:executed_service) do
-    basic_service.tap do |service|
+    FactoryGirl.create(:service_ansible_playbook, :options => provision_options).tap do |service|
       allow(service).to receive(:job).with(action).and_return(tower_job)
     end
   end
 
   let(:dialog_options) do
     {
       :dialog => {
-        'dialog_hosts'         => 'host1,host2',
-        'dialog_credential_id' => 1,
-        'dialog_param_var1'    => 'value1',
-        'dialog_param_var2'    => 'value2'
+        'dialog_hosts'      => 'host1,host2',
+        'dialog_credential' => credential_1.id,
+        'dialog_param_var1' => 'value1',
+        'dialog_param_var2' => 'value2'
+      }
+    }
+  end
+
+  let(:config_info_options) do
+    {
+      :config_info => {
+        :provision => {
+          :hosts      => "default_host1,default_host2",
+          :extra_vars => {
+            "var1" => "default_val1",
+            "var2" => "default_val2",
+            "var3" => "default_val3"
+          },
+        }
       }
     }
   end
 
   let(:override_options) do
     {
-      :hosts      => 'host3',
-      :extra_vars => { 'var1' => 'new_val1' }
+      :credential_id => credential_2.id,
+      :hosts         => 'host3',
+      :extra_vars    => { 'var1' => 'new_val1' }
     }
   end
 
-  let(:provision_options) { {:provision_job_options => override_options} }
+  let(:provision_options) do
+    {
+      :provision_job_options => {
+        :credential => 1,
+        :inventory  => 2,
+        :extra_vars => {'var1' => 'value1', 'var2' => 'value2'}
+      }
+    }
+  end
 
   describe '#preprocess' do
-    it 'prepares options for action' do
-      basic_service.preprocess(action, override_options)
-      basic_service.reload
-      expect(basic_service.options[:provision_job_options]).to have_attributes(
-        :hosts         => 'host3',
-        :credential_id => 1,
-        :extra_vars    => {'var1' => 'new_val1', 'var2' => 'value2'}
-      )
+    context 'basic service' do
+      it 'prepares job options from service template' do
+        hosts = config_info_options.fetch_path(:config_info, :provision, :hosts)
+        expect(basic_service).to receive(:create_inventory_with_hosts).with(action, hosts).and_return(double(:id => 10))
+        basic_service.preprocess(action)
+        service.reload
+        expect(basic_service.options[:provision_job_options]).to have_attributes(:inventory => 10)
+      end
+    end
+
+    context 'with dialog overrides' do
+      it 'prepares job options combines from service template and dialog' do
+        hosts = dialog_options[:dialog]['dialog_hosts']
+        expect(service).to receive(:create_inventory_with_hosts).with(action, hosts).and_return(double(:id => 20))
+        service.preprocess(action)
+        service.reload
+        expect(service.options[:provision_job_options]).to have_attributes(
+          :inventory  => 20,
+          :credential => credential_1.manager_ref,
+          :extra_vars => {'var1' => 'value1', 'var2' => 'value2', 'var3' => 'default_val3'}
+        )
+      end
+    end
+
+    context 'with runtime overrides' do
+      it 'prepares job options combined from service template, dialog, and overrides' do
+        hosts = override_options[:hosts]
+        expect(service).to receive(:create_inventory_with_hosts).with(action, hosts).and_return(double(:id => 30))
+        service.preprocess(action, override_options)
+        service.reload
+        expect(service.options[:provision_job_options]).to have_attributes(
+          :inventory  => 30,
+          :credential => credential_2.manager_ref,
+          :extra_vars => {'var1' => 'new_val1', 'var2' => 'value2', 'var3' => 'default_val3'}
+        )
+      end
     end
   end
 
@@ -90,4 +145,11 @@
   describe '#check_refreshed' do
     it { expect(executed_service.check_refreshed(action)).to eq([true, nil]) }
   end
+
+  describe '#postprocess' do
+    it 'deletes inventory' do
+      expect(executed_service).to receive(:delete_inventory)
+      executed_service.postprocess(action)
+    end
+  end
 end

spec/models/service_template_ansible_playbook_spec.rb

@@ -6,7 +6,7 @@
   let(:config_script) { FactoryGirl.create(:configuration_script) }
   let(:script_source) { FactoryGirl.create(:configuration_script_source, :manager => ems) }
 
-  let(:inventory_root_group) { FactoryGirl.create(:inventory_root_group) }
+  let(:inventory_root_group) { FactoryGirl.create(:inventory_root_group, :name => 'Demo Inventory') }
   let(:service_template_catalog) { FactoryGirl.create(:service_template_catalog) }
   let(:ems) do
     FactoryGirl.create(:automation_manager_ansible_tower, :inventory_root_groups => [inventory_root_group])