How make rule for complex objects on python

[ewertonsantanams]

Hello ZeroSteiner and contributors, how are you?
I’m starting to use the library for a business rule validation project based on objects described by JSON, but they are more complex JSON objects, and I haven’t found a way or example for such a scenario. In this case, I want to validate if the "GroupId" in Reservations[].Instances[].SecurityGroups[].GroupId is exactly the same as the one in the following JSON:

{
    "Reservations": [
        {
            "ReservationId": "r-0123456789abcdef0",
            "OwnerId": "123456789012",
            "Groups": [],
            "Instances": [
                {
                    "InstanceId": "i-0abcdef1234567890",
                    "ImageId": "ami-0abcdef1234567890",
                    "InstanceType": "t2.micro",
                    "KeyName": "my-key-pair",
                    "LaunchTime": "2023-08-01T12:34:56.000Z",
                    "Placement": {
                        "AvailabilityZone": "us-east-1a",
                        "GroupName": "",
                        "Tenancy": "default"
                    },
                    "PrivateIpAddress": "10.0.0.1",
                    "PublicIpAddress": "203.0.113.1",
                    "State": {
                        "Code": 16,
                        "Name": "running"
                    },
                    "Monitoring": {
                        "State": "enabled"
                    },
                    "SubnetId": "subnet-6e7f829e",
                    "VpcId": "vpc-1a2b3c4d",
                    "Architecture": "x86_64",
                    "BlockDeviceMappings": [
                        {
                            "DeviceName": "/dev/xvda",
                            "Ebs": {
                                "VolumeId": "vol-0abcd1234efgh5678",
                                "Status": "attached",
                                "DeleteOnTermination": true,
                                "AttachTime": "2023-08-01T12:34:56.000Z"
                            }
                        }
                    ],
                    "Tags": [
                        {
                            "Key": "Name",
                            "Value": "MyEC2Instance"
                        }
                    ],
                    "SecurityGroups": [
                        {
                            "GroupName": "my-security-group",
                            "GroupId": "sg-903004f8"
                        }
                    ],
                    "StateTransitionReason": "",
                    "RootDeviceName": "/dev/xvda",
                    "RootDeviceType": "ebs",
                    "Hypervisor": "xen",
                    "VirtualizationType": "hvm"
                }
            ]
        }
    ]
}

How should I build my rule to validate this scenario?

P.S: This is an ChatGPT generated JSON without any private data.

[zeroSteiner]

You'd need to use a lot of list comprehension to search through the elements to match what you're looking for and then check if the resulting array is empty or not.

[ewertonsantanams]

First of all, thank you very much for your time and dedication to the library, and for taking the time to answer my questions.
Can you please give some example?

[zeroSteiner]

https://zerosteiner.github.io/rule-engine/syntax.html#array-comprehension