Nested Map Parallel Structures Asl

1{
2  "QueryLanguage": "JSONata",
3  "StartAt": "ProcessAllOrders",
4  "States": {
5    "ProcessAllOrders": {
6      "Type": "Map",
7      "Items": "{% $states.input.orders %}",
8      "MaxConcurrency": 5,
9      "ItemProcessor": {
10        "ProcessorConfig": {
11          "Mode": "INLINE"
12        },
13        "StartAt": "ProcessSingleOrder",
14        "States": {
15          "ProcessSingleOrder": {
16            "Type": "Parallel",
17            "Branches": [
18              {
19                "StartAt": "ValidatePayment",
20                "States": {
21                  "ValidatePayment": {
22                    "Type": "Task",
23                    "Resource": "arn:aws:states:::lambda:invoke",
24                    "Arguments": {
25                      "FunctionName": "arn:aws:lambda:us-east-1:123456789012:function:ValidatePayment:$LATEST",
26                      "Payload": "{% $states.input %}"
27                    },
28                    "Output": "{% $states.result.Payload %}",
29                    "End": true
30                  }
31                }
32              },
33              {
34                "StartAt": "CheckInventory",
35                "States": {
36                  "CheckInventory": {
37                    "Type": "Task",
38                    "Resource": "arn:aws:states:::dynamodb:getItem",
39                    "Arguments": {
40                      "TableName": "InventoryTable",
41                      "Key": {
42                        "productId": {
43                          "S": "{% $states.input.productId %}"
44                        }
45                      }
46                    },
47                    "Output": "{% $states.result.Item %}",
48                    "End": true
49                  }
50                }
51              }
52            ],
53            "Output": {
54              "payment": "{% $states.result[0] %}",
55              "inventory": "{% $states.result[1] %}"
56            },
57            "End": true
58          }
59        }
60      },
61      "Assign": {
62        "orderResults": "{% $states.result %}"
63      },
64      "Next": "Summarize"
65    },
66    "Summarize": {
67      "Type": "Succeed"
68    }
69  }
70}