ci: assignees: set multiple assignees of same area

Noticing many PRs that wait too long in the queue although once of the
maintainers approved with asignees set to other maintainers.

This changes the current behavior of picking the first maintainer in the
list and assigning to them only, instead we assign to all maintainers of
the main area being changed.

Who ends up driving the PR to a mergeable state is then to the
maintainers and they can unassign/assign based on availability.

Signed-off-by: Anas Nashif <[email protected]>

scripts/set_assignees.py

@@ -122,8 +122,7 @@ def process_pr(gh, maintainer_file, number):
     log(f"Submitted by: {pr.user.login}")
     log(f"candidate maintainers: {_all_maintainers}")
 
-    maintainers = list(_all_maintainers.keys())
-    assignee = None
+    assignees = []
 
     # we start with areas with most files changed and pick the maintainer from the first one.
     # if the first area is an implementation, i.e. driver or platform, we
@@ -132,26 +131,14 @@ def process_pr(gh, maintainer_file, number):
         if count == 0:
             continue
         if len(area.maintainers) > 0:
-            assignee = area.maintainers[0]
+            assignees = area.maintainers
 
             if 'Platform' not in area.name:
                 break
 
-    # if the submitter is the same as the maintainer, check if we have
-    # multiple maintainers
-    if len(maintainers) > 1 and pr.user.login == assignee:
-        log("Submitter is same as Assignee, trying to find another assignee...")
-        aff = list(area_counter.keys())[0]
-        for area in all_areas:
-            if area == aff:
-                if len(area.maintainers) > 1:
-                    assignee = area.maintainers[1]
-                else:
-                    log(f"This area has only one maintainer, keeping assignee as {assignee}")
-
-    if assignee:
-        prop = (found_maintainers[assignee] / num_files) * 100
-        log(f"Picked assignee: {assignee} ({prop:.2f}% ownership)")
+    if assignees:
+        prop = (found_maintainers[assignees[0]] / num_files) * 100
+        log(f"Picked assignees: {assignees} ({prop:.2f}% ownership)")
         log("+++++++++++++++++++++++++")
 
     # Set labels
@@ -217,10 +204,11 @@ def process_pr(gh, maintainer_file, number):
 
     ms = []
     # assignees
-    if assignee and not pr.assignee:
+    if assignees and not pr.assignee:
         try:
-            u = gh.get_user(assignee)
-            ms.append(u)
+            for assignee in assignees:
+                u = gh.get_user(assignee)
+                ms.append(u)
         except GithubException:
             log(f"Error: Unknown user")