Can't extract labels or values

[kotyara85]

Hey there,
Here's my config

modules:
  default:
    metrics:
    - name: status
      type: object
      help: status
      path: '$.[*]'
      labels:
        upstream: '{ .status }'
      values:
        running: 1

json:

[
  {
    "node": "rabbit@localhost",
    "exchange": "node.direct",
    "upstream_exchange": "node.direct",
    "type": "exchange",
    "vhost": "/",
    "upstream": "node",
    "id": "f2b17dfd",
    "status": "running"
  },
  {
    "node": "rabbit@localhost",
    "exchange": "node.topic",
    "upstream_exchange": "node.topic",
    "type": "exchange",
    "vhost": "/",
    "upstream": "node",
    "id": "a96b8f40",
    "status": "running"
  }
]

exporter says this -

ts=2023-03-04T19:12:11.304Z caller=collector.go:155 level=error msg="Failed to extract label value" err="status is not found" path="{ .status }" data="\"$.[*]\""

I have no issues extracting values in jsonpath playground using my query.

Any help is appreciated. Thanks

@rustycl0ck

[ruben-rodriguez]

Hello! 👋🏻

I did a quick check with your data and the following configuration works:

modules:
  default:
    metrics:
    - name: status
      type: object
      help: status
      path: '{$.*}'
      labels:
        node: '{$.node}'
        id: '{$.id}'
        upstream: '{$.status}'
      values:
        running: 1

Note that to avoid collected metric "status_running" { label:<name:"upstream" value:"running" > untyped:<value:1 > } was collected before with the same name and label values I added some more lables so the items collected are unique for your data input.