curl-loader, syntax for JSON directory

[Henrik A. S. <BU...@tm...>]

I've posted a question on Stack Overflow:
http://stackoverflow.com/questions/18074252/curl-loader-syntax-for-json-directory

However, I thought I might as well post it here on the official mailinglist.

I'm trying to load test an API with curl-loader. I'm able to call the API via standard curl like this:
curl -X POST http://localhost/api -H "Authorization: MY-ID" -d '{"resource": "ba424b79-5b38-4a34-85d7-c194f72cb145", "records": [{"a": 1, "b": "xyzxyz"}, {"a": 2, "b": "zzzzzz"}], "key": "a"}'
This works, however, when trying to create a conf-file for curl-loader, I'm not able to create the JSON-part correctly.
I've tried with the following:
HEADER="Authorization: MY-ID"
MULTIPART_FORM_DATA='{"resource": "ba424b79-5b38-4a34-85d7-c194f72cb145", "records": [{"a": 1, "b": "xyzxyz"}, {"a": 2, "b": "zzzzzz"}], "primary": "a"}'
It fails with:
multipart_form_data_parser - error: no '=' sign in multipart_form_data.
But when I try to split it up like this:
HEADER="Authorization: MY-ID"
MULTIPART_FORM_DATA='resource="ba424b79-5b38-4a34-85d7-c194f72cb145"'
MULTIPART_FORM_DATA='records=[{"a": 1, "b": "xyzxyz"}, {"a": 2, "b": "zzzzzz"}]'
MULTIPART_FORM_DATA='primary="a"'
it does run, but my values are not updated as if I just run curl itself. The log just says:
# 1375774696564 Tue Aug  6 09:38:16 2013
# msec_offset cycle_no url_no client_no (ip) indic info
0 0 0 1 !! CONT 100
0 0 0 3 !! CONT 100
0 0 0 2 !! CONT 100
45 0 0 3 !! ERCL 400 HTTP/1.1 400 Bad Request
89 0 0 1 !! ERCL 400 HTTP/1.1 400 Bad Request
90 0 0 2 !! ERCL 400 HTTP/1.1 400 Bad Request