gitlab_release_notes/generate.py: add --target_branch cmdline option

This is useful when your project has stable maintenance branches and use
MRs to manage them. Without this option, MRs for main vs. stable
branches will appear together.

Author: peat-psuwit

gitlab_release_notes/generate.py

@@ -4,7 +4,7 @@
 import sys
 from .version import __version__
 
-def generate_release_notes(project_id, endstr = '  <br>', since=None, quiet=False, **config):
+def generate_release_notes(project_id, endstr = '  <br>', since=None, quiet=False, target_branch=None, **config):
     """
     Generate the release notes of a gitlab project from the last release
 
@@ -33,7 +33,7 @@ def generate_release_notes(project_id, endstr = '  <br>', since=None, quiet=Fals
     gl = gitlab.Gitlab(**config)
     project = gl.projects.get(project_id)
 
-    if not project.mergerequests.list(get_all=False,state='merged'):
+    if not project.mergerequests.list(get_all=False,state='merged', target_branch=target_branch):
         raise ValueError(f"There is no merged merge request for project {project_id} {project.name}")
 
     log = ""
@@ -54,6 +54,7 @@ def generate_release_notes(project_id, endstr = '  <br>', since=None, quiet=Fals
                                           get_all=False,
                                           order_by='updated_at',
                                           updated_after=last_date,
+                                          target_branch=target_branch,
                                           page=page)
     if not list_mrs:
         if not quiet:
@@ -72,6 +73,7 @@ def generate_release_notes(project_id, endstr = '  <br>', since=None, quiet=Fals
                                               get_all=False,
                                               order_by='updated_at',
                                               updated_after=last_date,
+                                              target_branch=target_branch,
                                               page=page
                                               )
 
@@ -92,6 +94,7 @@ def main():
     parser.add_argument('--version', action='version', version=__version__)
     parser.add_argument('--html', action='store_true')
     parser.add_argument('--since', type=datetime.date.fromisoformat, required=False, default=None)
+    parser.add_argument('--target_branch', type=str, required=False, default=None)
     parser.add_argument('--quiet', action='store_true')
 
     args = parser.parse_args()
@@ -104,6 +107,7 @@ def main():
                                    url=args.url,
                                    endstr=endstr,
                                    since=args.since,
+                                   target_branch=args.target_branch,
                                    quiet=args.quiet,
                                    private_token=args.private_token,
             )