Settings json_path_map

This block API will likely change in future versions.

• type: producer_consumer
• accepted input: binary messages (in JSON format, with "application/json" subtype)
• output: message with the structure described by the template

Transforms the incoming JSON message using the configured JSON template which makes use of JSONPath to extract data from the incoming message.

Properties

• template: JSONPath template. (required, string)

template

template

output message template. It must be a valid JSON that makes use of JSONPath.

Output message

If the template rendering succeeds, json_path_map produces a message as described by template.

Examples

Extracts data from JSON using JSONPath expressions, and it populates a map having keys a, b, c:

[...]
| json_path_template
  .template("""
    {
      "data": {
        "a": "{{$.data.data[0].values[?(@.name == \"a\")].value}}",
        "b": "{{$.data.data[0].values[?(@.name == \"b\")].value}}",
        "c": "{{$.data.data[0].values[?(@.name == \"c\")].value}}"
      },
      "type": {
        "a": "real",
        "b": "real",
        "c": "real"
      }
    }
[...]