Temporary Partial Mock Support.

[MertNYuksel]

Add partial mock support with RFC 9535 JSONPath and RFC 6902 JSON Patch

Introduces PartialMockDecider for applying targeted modifications to response JSON using JSONPath queries and JSON Patch operations. Supports wildcard URL/method matching, template variable resolution, and all six RFC 6902 operation types.

Endpoint: /partial-mock
Route: /partial-mock

PUT /partial-mock — Add a partial mock

• Request body: JSON-encoded PartialMockModel containing deviceId, url, method, mockDomain, and modifications (JSONPath + JSON Patch operations)
• Returns: 202 Accepted
• Behavior: Registers a partial mock rule. If a rule with the same (deviceId, url, method) already exists, it replaces it. Future responses matching the rule will have the JSON Patch modifications applied.

DELETE /partial-mock — Remove partial mocks

• Request body: JSON-encoded PartialMockModel (only deviceId is used)
• Returns: 202 Accepted
• Behavior: Removes all partial mock rules for the given deviceId.

Example PUTS:

1. Add a partial mock — marketing object instrumentation with recursive descent

  curl -X PUT http://127.0.0.1:8008/partial-mock \
    -H "Content-Type: application/json" \
    -d '{
      "deviceId": "iPhone-15-simulator",
      "url": "*",
      "method": "*",
      "mockDomain": "LocalDevelopment",
      "modifications": [
        {
          "path": "$..marketing.*",
          "operations": [
            { "type": "add", "key": "{jsonPath}", "value": "tracked" },
            { "type": "add", "key": "domain", "value": "{domain}" },
            { "type": "add", "key": "requestPath", "value": "{requestPath}" }
          ]
        }
      ]
    }'

Matches all responses (wildcard url + method), finds every child under any marketing object at any depth, and injects the matched node's JSONPath, domain, and request path.

2. Add a partial mock — replace an existing field

  curl -X PUT http://127.0.0.1:8008/partial-mock \
    -H "Content-Type: application/json" \
    -d '{
      "deviceId": "iPhone-15-simulator",
      "url": "/api/product/detail",
      "method": "GET",
      "mockDomain": "LocalDevelopment",
      "modifications": [
        {
          "path": "$.product",
          "operations": [
            { "type": "replace", "key": "price", "value": 0.01 },
            { "type": "add", "key": "discountLabel", "value": "TEST DISCOUNT" }
          ]
        }
      ]
    }'

Replaces price and adds discountLabel inside $.product for product detail responses.

3. Add a partial mock — modify all array elements

  curl -X PUT http://127.0.0.1:8008/partial-mock \
    -H "Content-Type: application/json" \
    -d '{
      "deviceId": "iPhone-15-simulator",
      "url": "/api/search",
      "method": "POST",
      "mockDomain": "LocalDevelopment",
      "modifications": [
        {
          "path": "$.results[*]",
          "operations": [
            { "type": "add", "key": "sponsored", "value": true }
          ]
        }
      ]
    }'

Adds "sponsored": true to every item in the results array.

[yusufozgul]

we can rename it for better meaning

[yusufozgul]

should we save partial modified mock, or save as original?

[yusufozgul]

please use JSONDecoder.shared

[yusufozgul]

it would be better add more context to this log. like path