feat: add is_describe option to execute DescribeExecution action

Author: shota

lib/deploy/events/apiGateway/apigateway-to-stepfunctions-assume-role.json

@@ -22,7 +22,8 @@
             {
               "Effect": "Allow",
               "Action": [
-                "states:StartExecution"
+                "states:StartExecution",
+                "states:DescribeExecution"
               ],
               "Resource": "*"
             }

lib/deploy/events/apiGateway/methods.js

@@ -162,7 +162,8 @@ module.exports = {
             {
               Ref: 'AWS::Region',
             },
-            ':states:action/StartExecution',
+            (!http || !http.is_describe) ?
+              ':states:action/StartExecution' : ':states:action/DescribeExecution',
           ],
         ],
       },

lib/deploy/events/cloudWatchEvent/compileCloudWatchEventEvents.js

@@ -123,7 +123,8 @@ module.exports = {
                         {
                           "Effect": "Allow",
                           "Action": [
-                            "states:StartExecution"
+                            "states:StartExecution",
+                            "states:DescribeExecution"
                           ],
                           "Resource": {
                             "Ref": "${stateMachineLogicalId}"