Function parse_json 

pub fn parse_json(json: &str, pool: &DescriptorPool) -> Result<Plan>

• Naive ({"typeUrl": "...", "value": "<base64>"}): decoded via serde_json and pbjson.
  • This takes the protobuf fields of an Any (type_url, value) and serializes them like it would any other field. This is the ‘naive’ approach to JSON encoding protobufs; see https://github.com/influxdata/pbjson/issues/2
• Standard ({"@type": "...", "field": value, ...}): decoded via prost-reflect
  • Any is a Well-Known Type in Protobuf, so in the standard, it has special handling: the protobuf type_url should become the JSON @type field, and other fields should be inlined. See https://protobuf.dev/reference/protobuf/google.protobuf/#any.
  • This requires the concrete type’s schema to be present in pool.

The naive method is tried first (via serde_json + pbjson); we fall back to prost-reflect, which requires descriptors but can decode standards-correct JSON-encoded protobufs.