feat: retain config

add ability to set DeletionPolicy to Retain for State Machine

Author: user123dm

lib/deploy/stepFunctions/compileStateMachines.js

@@ -224,6 +224,10 @@ module.exports = {
           [stateMachineLogicalId]: stateMachineTemplate,
         };
 
+        if (stateMachineObj.retain) {
+          newStateMachineObject[stateMachineLogicalId].DeletionPolicy = 'Retain';
+        }
+
         if (stateMachineObj.name) {
           newStateMachineObject[
             stateMachineLogicalId].Properties.StateMachineName = stateMachineObj.name;

lib/deploy/stepFunctions/compileStateMachines.schema.js

@@ -42,6 +42,7 @@ const alarms = Joi.object();
 const notifications = Joi.object();
 const useExactVersion = Joi.boolean().default(false);
 const type = Joi.string().valid('STANDARD', 'EXPRESS').default('STANDARD');
+const retain = Joi.boolean().default(false);
 
 const schema = Joi.object().keys({
   id,
@@ -55,6 +56,7 @@ const schema = Joi.object().keys({
   alarms,
   notifications,
   type,
+  retain,
   loggingConfig,
   inheritGlobalTags,
 });

lib/deploy/stepFunctions/compileStateMachines.test.js

@@ -1430,4 +1430,22 @@ describe('#compileStateMachines', () => {
     expect(Object.keys(serverlessStepFunctions.serverless.service.provider
       .compiledCloudFormationTemplate.Outputs).length).to.equal(0);
   });
+
+  it('should add DeletionPolicy when retain is true', () => {
+    serverless.service.stepFunctions = {
+      stateMachines: {
+        myStateMachine1: {
+          definition: 'definition1',
+          name: 'stateMachineBeta1',
+          retain: true,
+        },
+      },
+    };
+
+    serverlessStepFunctions.compileStateMachines();
+
+    expect(serverlessStepFunctions.serverless.service
+      .provider.compiledCloudFormationTemplate.Resources
+      .StateMachineBeta1.DeletionPolicy).to.equal('Retain');
+  });
 });