How to read response of a JIRA REST API - bash

Question

Using the Atlassian documentation, I'm able to create a new JIRA ticket using curl command. I want to understand how to read the response of this command into a variable? Essentially i want to store the JIRA ticket ID into a variable that can be used in other scripts.
Reference Link: https://developer.atlassian.com/server/jira/platform/jira-rest-api-examples/
_SAMPLE_CODE_
curl -D- -u charlie:charlie -X POST --data '{
"fields": {
"project":{
"key": "TEST"
},
"summary": "REST ye merry gentlemen.",
"description": "Creating of an issue using project keys and issue type names using the REST API",
"issuetype": {
"name": "Bug"
}
}
}' -H "Content-Type: application/json" http://localhost:8080/rest/api/2/issue/
_SAMPLE_RESPONSE_
{
"id":"39000",
"key":"TEST-101",
"self":"http://localhost:8080/rest/api/2/issue/39000"
}
From the above log, I want to understand how can we fetch the "key" (i.e. JIRA number or JIRA ID) from response (essentially stdout) into a variable.

Answer 1

you can use jq command line tool to extract value from json:
#!/bin/bash
key=$(curl -s -u charlie:charlie -X POST --data '{
"fields": {
"project":{
"key": "TEST"
},
"summary": "REST ye merry gentlemen.",
"description": "Creating of an issue using project keys and issue type names using the REST API",
"issuetype": {
"name": "Bug"
}
}
}' -H "Content-Type: application/json" http://localhost:8080/rest/api/2/issue/|jq -r .key)
echo "key: $key"
jq command is not installed by default on linux systems.
you will need to install it manually:
sudo apt install jq
sudo yum install jq