Implement httpxml plugin alongside httpjson

[sandervandegeijn]

Feature Request

There is the https://github.com/influxdata/telegraf/tree/master/plugins/inputs/httpjson plugin
Really useful, but my data is in XML format. Can this plugin be adapted to parse xml and do exactly the same

Proposal:

Implement httpxml plugin

Current behavior:

Desired behavior:

Same as httpjson but for xml

Use case:

Monitoring API's that give numbers of results for a query and to monitor that.

[sjwang90]

Closing this as we're already following issue #1758 and have an XML parser PR that you can use with inputs.http.

Also we have deprecated the httpjson plugin and you should use inputs.http with data_format = "http" if you're going to parse JSON - which you'll eventually set the data format to xml when the parser is completed.

[sandervandegeijn]

Thank you, didn't notice that! Will look into it