JSON Patch
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External
- https://tools.ietf.org/html/rfc6902
- https://erosb.github.io/post/json-patch-vs-merge-patch/
- https://kubernetes.io/docs/tasks/manage-kubernetes-objects/update-api-object-kubectl-patch/
Internal
Overview
JSON patch is defined in RFC6902.
JSON patch defines a JSON document structure for expressing a sequence of operations to apply to a JSON document, in order to change it. The format is suitable to use with the HTTP PATCH method and an "application/json-patch+json" media type.
PATCH /my/data HTTP/1.1
Host: example.org
Content-Length: 326
Content-Type: application/json-patch+json
If-Match: "abc123"
[
{ "op": "test", "path": "/a/b/c", "value": "foo" },
{ "op": "remove", "path": "/a/b/c" },
{ "op": "add", "path": "/a/b/c", "value": [ "foo", "bar" ] },
{ "op": "replace", "path": "/a/b/c", "value": 42 },
{ "op": "move", "from": "/a/b/c", "path": "/a/b/d" },
{ "op": "copy", "from": "/a/b/d", "path": "/a/b/e" }
]
Evaluation of a JSON Patch document begins agains a target JSON document. Operations are applied sequentially, in the order in they appear in the array. Evaluation continues until all operations succeed or an error occurs.