fix: Remind creators to move INC-team action items

src/firetower/incidents/tasks/action_items.py

@@ -1,6 +1,7 @@
 import logging
 from dataclasses import dataclass
 from datetime import timedelta
+from uuid import NAMESPACE_URL, UUID, uuid5
 
 from django.conf import settings
 from django.utils import timezone
@@ -71,10 +72,77 @@ def _build_nag_tiers(linear: dict) -> dict[int, NagTier]:
 
 _NAG_TEMPLATE_ENV = Environment(autoescape=False)
 
+MISFILED_ACTION_ITEM_REMINDER_MARKER = "Firetower action-item team reminder"
+
+
+def _remind_misfiled_action_item_creators(linear: dict) -> None:
+    if not linear.get("SYNC_IDENTIFIERS", False):
+        return
+
+    team_id = linear.get("TEAM_ID")
+    if not team_id:
+        return
+
+    try:
+        service = LinearService()
+        issues = service.get_misfiled_action_items(
+            team_id, MISFILED_ACTION_ITEM_REMINDER_MARKER
+        )
+    except Exception:
+        logger.exception("Failed to find misfiled action items")
+        return
+    if issues is None:
+        logger.error("Failed to find misfiled action items")
+        return
+
+    logger.info(
+        "Found %d misfiled action items without a team reminder in Linear team %s",
+        len(issues),
+        team_id,
+    )
+    for issue in issues:
+        issue_id = None
+        try:
+            issue_id = issue["id"]
+            creator = issue.get("creator")
+            greeting = (
+                f"Hi @[{creator['displayName']}]({creator['id']}), "
+                if creator
+                else "Hi, "
+            )
+            comment = (
+                f"**{MISFILED_ACTION_ITEM_REMINDER_MARKER}**\n\n"
+                f"{greeting}this action item was created in the "
+                f"{settings.PROJECT_KEY} team. Please move it to the relevant "
+                "actioning team, keeping it as a child of the incident ticket. "
+                "The incident team is reserved for incident tickets, not action items."
+            )
+            # A stable UUID in Linear's required v4 format also prevents duplicate
+            # comments from overlapping runs or a successful but timed-out request.
+            comment_id = str(
+                UUID(
+                    bytes=uuid5(
+                        NAMESPACE_URL, f"firetower:inc-team-reminder:{issue_id}"
+                    ).bytes,
+                    version=4,
+                )
+            )
+            success = service.create_comment(issue_id, comment, comment_id=comment_id)
+        except Exception:
+            logger.exception(
+                "Failed to post team reminder for action item %s", issue_id
+            )
+            continue
+        if not success:
+            logger.error("Failed to post team reminder for action item %s", issue_id)
+        else:
+            logger.info("Posted team reminder for action item %s", issue_id)
+
 
 @datadog_log
 def send_action_item_reminder() -> None:
     linear = settings.LINEAR or {}
+    _remind_misfiled_action_item_creators(linear)
     nag_tiers = _build_nag_tiers(linear)
     comments_by_priority: dict[int, str] = {
         priority: linear.get(tier.comment_setting_key, "")

src/firetower/incidents/tests/test_action_item_team_reminders.py

@@ -0,0 +1,217 @@
+from unittest.mock import MagicMock, patch
+from uuid import UUID
+
+import pytest
+
+from firetower.incidents.tasks.action_items import (
+    MISFILED_ACTION_ITEM_REMINDER_MARKER,
+    _remind_misfiled_action_item_creators,
+    send_action_item_reminder,
+)
+
+LINEAR = {"TEAM_ID": "incident-team", "SYNC_IDENTIFIERS": True}
+ISSUE = {
+    "id": "issue-1",
+    "identifier": "INC-2508",
+    "creator": {"id": "creator-id", "displayName": "Leander Rodrigues"},
+}
+
+
+@pytest.fixture
+def service(settings):
+    settings.PROJECT_KEY = "INC"
+    settings.LINEAR = LINEAR
+    service = MagicMock()
+    service.get_misfiled_action_items.return_value = [ISSUE]
+    service.create_comment.return_value = True
+    with patch(
+        "firetower.incidents.tasks.action_items.LinearService", return_value=service
+    ):
+        yield service
+
+
+def test_mentions_creator_and_explains_move(service):
+    _remind_misfiled_action_item_creators(LINEAR)
+
+    service.get_misfiled_action_items.assert_called_once_with(
+        "incident-team", MISFILED_ACTION_ITEM_REMINDER_MARKER
+    )
+    args, kwargs = service.create_comment.call_args
+    assert args[0] == ISSUE["id"]
+    assert "@[Leander Rodrigues](creator-id)" in args[1]
+    assert MISFILED_ACTION_ITEM_REMINDER_MARKER in args[1]
+    assert "created in the INC team" in args[1]
+    assert "move it to the relevant actioning team" in args[1]
+    assert "keeping it as a child" in args[1]
+    assert UUID(kwargs["comment_id"]).version == 4
+
+
+@pytest.mark.parametrize("issues", [[], [ISSUE]])
+def test_logs_candidate_count(service, caplog, issues):
+    service.get_misfiled_action_items.return_value = issues
+
+    with caplog.at_level("INFO", logger="firetower.incidents.tasks.action_items"):
+        _remind_misfiled_action_item_creators(LINEAR)
+
+    assert (
+        f"Found {len(issues)} misfiled action items without a team reminder "
+        "in Linear team incident-team"
+    ) in caplog.text
+
+
+@pytest.mark.parametrize("success", [True, False])
+def test_logs_posted_reminder_only_on_success(service, caplog, success):
+    service.create_comment.return_value = success
+
+    with caplog.at_level("INFO", logger="firetower.incidents.tasks.action_items"):
+        _remind_misfiled_action_item_creators(LINEAR)
+
+    assert ("Posted team reminder for action item issue-1" in caplog.text) is success
+
+
+def test_skips_issues_with_existing_reminder_on_later_runs(service):
+    service.get_misfiled_action_items.side_effect = [[ISSUE], []]
+
+    _remind_misfiled_action_item_creators(LINEAR)
+    _remind_misfiled_action_item_creators(LINEAR)
+
+    service.create_comment.assert_called_once()
+
+
+def test_comment_id_is_stable_across_retries(service):
+    service.create_comment.side_effect = [TimeoutError("response lost"), True]
+
+    _remind_misfiled_action_item_creators(LINEAR)
+    _remind_misfiled_action_item_creators(LINEAR)
+
+    calls = service.create_comment.call_args_list
+    assert len(calls) == 2
+    assert calls[0].kwargs["comment_id"] == calls[1].kwargs["comment_id"]
+
+
+def test_comment_ids_differ_between_issues(service):
+    service.get_misfiled_action_items.return_value = [
+        ISSUE,
+        {**ISSUE, "id": "issue-2", "identifier": "INC-2509"},
+    ]
+
+    _remind_misfiled_action_item_creators(LINEAR)
+
+    calls = service.create_comment.call_args_list
+    assert calls[0].kwargs["comment_id"] != calls[1].kwargs["comment_id"]
+
+
+def test_handles_missing_creator(service):
+    service.get_misfiled_action_items.return_value = [{**ISSUE, "creator": None}]
+
+    _remind_misfiled_action_item_creators(LINEAR)
+
+    body = service.create_comment.call_args.args[1]
+    assert "Hi, this action item" in body
+    assert "@[" not in body
+
+
+@pytest.mark.parametrize("config", [{}, {"TEAM_ID": ""}])
+def test_skips_when_team_is_not_configured(service, config):
+    _remind_misfiled_action_item_creators({**config, "SYNC_IDENTIFIERS": True})
+
+    service.get_misfiled_action_items.assert_not_called()
+    service.create_comment.assert_not_called()
+
+
+@pytest.mark.parametrize("config", [{}, {"SYNC_IDENTIFIERS": False}])
+def test_skips_when_identifier_sync_is_disabled(service, config):
+    with patch("firetower.incidents.tasks.action_items.LinearService") as client:
+        _remind_misfiled_action_item_creators({"TEAM_ID": "incident-team", **config})
+
+    client.assert_not_called()
+    service.get_misfiled_action_items.assert_not_called()
+    service.create_comment.assert_not_called()
+
+
+@pytest.mark.parametrize("failure", [None, RuntimeError("Linear unavailable")])
+def test_does_not_post_when_lookup_fails(service, failure):
+    if isinstance(failure, Exception):
+        service.get_misfiled_action_items.side_effect = failure
+    else:
+        service.get_misfiled_action_items.return_value = failure
+
+    _remind_misfiled_action_item_creators(LINEAR)
+
+    service.create_comment.assert_not_called()
+
+
+@pytest.mark.parametrize("failure", [False, RuntimeError("Linear unavailable")])
+def test_continues_after_a_comment_failure(service, failure):
+    service.get_misfiled_action_items.return_value = [
+        ISSUE,
+        {**ISSUE, "id": "issue-2", "identifier": "INC-2509"},
+    ]
+    service.create_comment.side_effect = [failure, True]
+
+    _remind_misfiled_action_item_creators(LINEAR)
+
+    assert service.create_comment.call_count == 2
+
+
+@pytest.mark.parametrize(
+    "malformed",
+    [
+        None,
+        {},
+        {**ISSUE, "creator": {"id": "creator-id"}},
+        {**ISSUE, "creator": {"displayName": "Leander Rodrigues"}},
+    ],
+)
+def test_continues_after_malformed_issue_data(service, malformed):
+    service.get_misfiled_action_items.return_value = [malformed, ISSUE]
+
+    _remind_misfiled_action_item_creators(LINEAR)
+
+    service.create_comment.assert_called_once()
+    assert service.create_comment.call_args.args[0] == ISSUE["id"]
+
+
+def test_initialization_failure_does_not_escape(service):
+    with patch(
+        "firetower.incidents.tasks.action_items.LinearService",
+        side_effect=RuntimeError("initialization failed"),
+    ):
+        _remind_misfiled_action_item_creators(LINEAR)
+
+    service.create_comment.assert_not_called()
+
+
+def test_malformed_issue_does_not_block_slo_sweep(service, settings):
+    settings.LINEAR = {**LINEAR, "ACTION_ITEM_NAG_COMMENT_HIGH_PRIORITY": "SLO nag"}
+    service.get_misfiled_action_items.return_value = [
+        {**ISSUE, "creator": {"id": "creator-id"}}
+    ]
+    incident = MagicMock()
+    incident.action_items.filter.return_value = []
+    with (
+        patch("firetower.incidents.tasks.action_items.Incident") as incident_model,
+        patch(
+            "firetower.incidents.tasks.action_items.sync_action_items_from_linear"
+        ) as sync,
+    ):
+        incident_model.objects.filter.return_value.exclude.return_value = [incident]
+
+        send_action_item_reminder()
+
+    sync.assert_called_once_with(incident)
+    service.create_comment.assert_not_called()
+
+
+def test_uses_configured_incident_team_key(service, settings):
+    settings.PROJECT_KEY = "TESTINC"
+
+    _remind_misfiled_action_item_creators(LINEAR)
+
+    assert "created in the TESTINC team" in service.create_comment.call_args.args[1]
+
+
+def test_cron_sweeps_even_without_slo_nag_configuration(service):
+    send_action_item_reminder()
+
+    service.create_comment.assert_called_once()

src/firetower/incidents/tests/test_tasks.py

@@ -838,6 +838,13 @@ def _configure_linear(self):
         with patch.object(settings, "LINEAR", linear_settings):
             yield
 
+    @pytest.fixture(autouse=True)
+    def mock_team_reminders(self):
+        with patch(
+            "firetower.incidents.tasks.action_items._remind_misfiled_action_item_creators"
+        ) as mock:
+            yield mock
+
     @pytest.fixture(autouse=True)
     def mock_sync(self):
         with patch(