kcidb/monitor/subscriptions: add 'linux_stable_rt' subscription

Add a subscription script for generating notifications
for Linux `stable-rt` tree.

Signed-off-by: Jeny Sadadia <[email protected]>

kcidb/monitor/subscriptions/linux_stable_rt.py

@@ -0,0 +1,36 @@
+"""Linux stable-rt subscription"""
+from datetime import (timezone, datetime, timedelta)
+
+from kcidb.monitor.output import NotificationMessage as Message
+
+
+def match_revision(revision):
+    """Match revisions of stable-rt tree"""
+    # Repo we're interested in
+    repo_url = "https://git.kernel.org/pub/scm/linux/kernel/git/rt/" \
+        "linux-stable-rt.git"
+
+    # If the revision is not from stable-rt repo,
+    # or there are no finished builds
+
+    if repo_url not in revision.repo_branch_checkouts:
+        return ()
+
+    if revision.builds_valid is None:
+        return ()
+
+    # If the revision is not from 'maestro' or 'broonie' origin
+    if not {c.origin for c in revision.checkouts} & {'maestro', 'broonie'}:
+        return ()
+
+    # Send notification 3 hours after a revision is created/updated
+    return (Message(
+        subject='KernelCI report for stable-rt: '
+                '{% include "stable_rt_revision_summary.txt.j2" %}',
+        to=["Jeny Sadadia <[email protected]>",
+            "Gustavo Padovan <[email protected]>",
+            "Shreeya Patel <[email protected]>"],
+        body='{% include "stable_rt_revision_description.txt.j2" %}',
+        cc=["KernelCI Results Staging <[email protected]>"],
+        due=datetime.now(timezone.utc) + timedelta(hours=3)
+    ),)