Allow preserving proto field names before checking mappings

[joseluzon]

Proposal

When using response templating reference to request field should be using lowerCamelCase.

Example:

{
  "mappings": [
    {
      "request": {
        "method": "POST",
        "url": "/api.v1.service.MyService/DeleteResource"
      },
      "response": {
        "status": 200,
        "jsonBody": {
          "created_at": "{{now}}",
          "resource_uuid": "{{jsonPath request.body '$.resourceUuid'}}"
        }
      }
    }
  ]
}

This is due to the following code:

wiremock-grpc-extension/src/main/java/org/wiremock/grpc/internal/JsonMessageConverter.java

Line 30 in 73dfada

jsonPrinter = JsonFormat.printer().usingTypeRegistry(typeRegistry);

JsonFormat default printer is used, which by default convert names to lowerCamelCase.

It should be nice to allow preserving proto field names:

jsonPrinter = JsonFormat.printer().preservingProtoFieldNames().usingTypeRegistry(typeRegistry);

so this json works too:

{
  "mappings": [
    {
      "request": {
        "method": "POST",
        "url": "/api.v1.service.MyService/DeleteResource"
      },
      "response": {
        "status": 200,
        "jsonBody": {
          "created_at": "{{now}}",
          "resource_uuid": "{{jsonPath request.body '$.resource_uuid'}}"
        }
      }
    }
  ]
}

The solution proposed is to leave the current behavior as it is and, depending on an setting configuration that could be set in a wiremock container (env var for example), use the "preservingProtoFieldNames" printer. This way, both approaches could be used.

Note: see this issue

Adven27/grpc-wiremock#26

References

No response