[collectd] curl_json woes - arrays and parsing errors

[Dave Cottlehuber]

Hi,

I've been trying unsuccessfully to parse JSON data from a webservice
for using inside collectd --

{rows: [{
        key: ["urgent"],
        value: 8
    }, {
        key: ["low"],
        value: 174
…

I'd like to be able to spit out a tuple  `rows[0].key, rows[0].value`,
is this even possible?

Below is a slimmed down test using publically accessible endpoints.

- is it possible to extract an item from an array (see "data" below)
- why is the cherokee example causing an error? the json appears valid
using json_verify from yajl2 suite:

$ curl -s http://www.cherokee-project.com/about/info/js | json_verify
JSON is valid

NB full config and error here https://gist.github.com/dch/b31af6cae7cf5f525768

<Plugin curl_json>
    <URL "https://qrng.anu.edu.au/API/jsonI.php?length=5&type=uint8">
      #{
      #    "type": "uint8",
      #    "length": 5,
      #    "data": [ 20, 234, 108, 97, 13 ],
      #    "success": true
      #}
      Instance "random"
      #<Key "length">
      #  Type "gauge"
      #</Key>
      <Key "data/*">
        Type "gauge"
      </Key>
    </URL>
    <URL "http://www.cherokee-project.com/about/info/js">
    #{
    #  "version": "Cherokee web server 1.2",
    #  "traffic": {
    #      "tx": 247971700722,
    #      "rx": 3793223698,
     Instance "cherokee"
     <Key "traffic/tx">
       Type "gauge"
     </Key>
    </URL>
</Plugin>


======= error ========


[2013-03-06 16:52:18] [error] curl_json plugin: yajl_parse failed:
parse error: premature EOF
                                        786845,         "tx": 1634174
                     (right here) ------^

A+
Dave