How to add/delete group from user roles in project roles?

Tayyab Bashir

Hi,
JIRA Version: 7.2.6

I want to add a group "ABC" and delete a group "XYZ" from the user roles in Project roles, of all the projects. 

Since there are over 250 projects and every project has XYZ added as a group in project roles, I can't manually go in each project and delete that group and replace it with ABC. 

How can I do it with some automation? 

Regards,
Tayyab

Tayyab Bashir

I was able to solve this with REST calls. 

I made a rest call and got all the projects. 
From that I retrieved all the project ids. 

Then I traversed through all the IDs, and made POST and DELETE requests for adding and deleting groups alternatively. 

Following are the rest calls:

1. For getting all the projects

http://localhost:8080/rest/api/2/project

2. For Adding group.

http://localhost:8080/rest/api/2/project/'+projectId+'/role/'+projectRoleID+

3. For Deleting group.

http://localhost:8080/rest/api/2/project/'+projecId+'/role/projectRoleID?group=groupToDelete