Add JSON element in bash script - json

Question

within my bash script I have a line that looks like this:
JOB_RESULTS=$(curl --fail -k -H "Content-Type: application/xml" --write-out HTTP_CODE='%{http_code}' "${request_url}")
This line outputs the following:
{"name":"callCLF010Job","id":11693,"status":"STARTING","message":"The job has started.","exitCode":"exitCode=UNKNOWN;exitDescription="}HTTP_CODE=200
The problem is, I want to add the HTTP_CODE into the JSON message.
Is there a way to make the return look like {"name":"callCLF010Job","id":11693,"status":"STARTING","message":"The job has started.","exitCode":"exitCode=UNKNOWN;exitDescription=","HTTP_CODE":"200"}
EDIT:
With confettis changes my code looks like this:
http_code="${JOB_RESULTS:${#JOB_RESULTS}-17}"
http_body="${JOB_RESULTS:0:${#JOB_RESULTS}-17}"
http_code_json=", ${http_code}}"
my_result="${http_body/%\}/$http_code_json}"
when I run echo $my_result my output looks like this:
{"name":"callCLF010Job","id":11702,"status":"STARTING","message":"The job has started.","exitCode":"exitCode=UNKNOWN;exitDescriptio

Answer 1

One option is to use sed to format the output the way you want:
echo $JOB_RESULTS | sed 's/}HTTP_CODE=\([0-9]\+\)$/,"HTTP_CODE":"\1"}/'
Or inside your command:
JOB_RESULTS=$(curl --fail -k -H "Content-Type: application/xml" --write-out HTTP_CODE='%{http_code}' "${request_url}" | sed 's/}HTTP_CODE=\([0-9]\+\)$/,"HTTP_CODE":"\1"}/')

Answer 2

This is using shell parameter expansion to get the job done. (Pure bash, besides curl.)
curlout=$(curl -s --fail -k -H "Content-Type: application/xml" --write-out '"HTTP_CODE":"%{http_code}"' "http://example.com")
http_code="${curlout:${#curlout}-17}"
http_body="${curlout:0:${#curlout}-17}"
http_code_json=", ${http_code}}"
my_result="${http_body/%\}/$http_code_json}"
Replace http://example.com with the URL or variable of your choice.
In order to prevent errors in case of a wrong URL or (no) output, you should put the last four lines within an if-construct. E.g. if [[ $http_code != '"HTTP_CODE":"000"' ]].