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json_exporter/README.md
rustyclock c869516e98
Refactor the complete code 
* Make the working of this exporter similar to that of the blackbox_exporter to allow probing multiple targets.
* Add functionality to add headers to the request
* Update the example config to use `headers` as well as the `metrics` keys in alignment with the new code
* Add default header 'Accept: application/json'

Signed-off-by: rustyclock <rustyclock@protonmail.com>
2020-08-04 15:21:24 +09:00

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json_exporter

CircleCI

A prometheus exporter which scrapes remote JSON by JSONPath.

Build

make build

Example Usage

$ cat example/data.json
{
    "counter": 1234,
    "values": [
        {
            "id": "id-A",
            "count": 1,
            "some_boolean": true,
            "state": "ACTIVE"
        },
        {
            "id": "id-B",
            "count": 2,
            "some_boolean": true,
            "state": "INACTIVE"
        },
        {
            "id": "id-C",
            "count": 3,
            "some_boolean": false,
            "state": "ACTIVE"
        },
    ]
}

$ cat example/config.yml
- name: example_global_value
  path: $.counter
  labels:
    environment: beta # static label

- name: example_value
  type: object
  path: $.values[*]?(@.state == "ACTIVE")
  labels:
    environment: beta # static label
    id: $.id          # dynamic label
  values:
    active: 1      # static value
    count: $.count # dynamic value
    boolean: $.some_boolean

$ python -m SimpleHTTPServer 8000 &
Serving HTTP on 0.0.0.0 port 8000 ...

$ ./json_exporter examples/config.yml &

$ curl "http://localhost:7979/probe?target=http://localhost:8000/examples/data.json" | grep ^example
example_global_value{environment="beta",location="mars"} 1234
example_value_active{environment="beta",id="id-A"} 1
example_value_active{environment="beta",id="id-C"} 1
example_value_boolean{environment="beta",id="id-A"} 1
example_value_boolean{environment="beta",id="id-C"} 0
example_value_count{environment="beta",id="id-A"} 1
example_value_count{environment="beta",id="id-C"} 3

Docker

docker run \
  -v config.yml:/config.yml
  quay.io/prometheuscommunity/json-exporter \
    http://example.com/target.json \
    /config.yml

See Also