HTTP + swagger in logic app - parsing the schema - json

Question

I am using HTTP+Swagger to make API call(hosted in APIM gateway) in logic app.
In Logic app we can use the parse Json to parse the schema and it provide us access to the individual element of the JSON payload(which we can use in downstream logic). But we have to manually paste the schema in the schema field of parseJson activity.
I want to automate the process. I am looking a way where I can collect the Json schema in a variable and then parse my Json through this variable(schema). This will help me not to make manual interferences with logic app in case of change in schema.
Any help much appreciated.
Thanks,

Answer 1

You don't really have to manually write the JSON schema but you just need a sample of the JSON that you want to parse. Consider here is some sample
[
{
"document": "A",
"min": 7500001,
"policy": "X"
},
{
"document": "B",
"min": 7500001,
"policy": "Y"
},
{
"document": "C",
"min": 7500001,
"policy": "Z"
},
{
"document": "D",
"min": 7500002,
"policy": "X"
}
]
So you need to use Use sample payload to generate schema.
and then you will be automatically have generated schema
Below is the generated schema
{
"type": "array",
"items": {
"type": "object",
"properties": {
"document": {
"type": "string"
},
"min": {
"type": "integer"
},
"policy": {
"type": "string"
}
},
"required": [
"document",
"min",
"policy"
]
}
}
Updated Answer
So, This would work even when you have a JSON change just remove the required from the schema and this would work perfectly when you are trying to use the same parameters as before.
For example, I have changed my sample to
[
{
"document": "A",
"min": 7500001,
"sample":"test1"
},
{
"document": "B",
"min": 7500001,
"sample":"test2"
},
{
"document": "C",
"min": 7500001,
"policy": "Z"
},
{
"document": "D",
"min": 7500002,
"policy": "X"
}
]
and remain the schema to be the same as before, this would fail due to schema validation
but when you just remove the required from schema i.e.,
{
"type": "array",
"items": {
"type": "object",
"properties": {
"document": {
"type": "string"
},
"min": {
"type": "integer"
},
"policy": {
"type": "string"
}
}
}
}