Misc cleanup and TODOs on malware checks. (#7355)

* Misc cleanup and TODOs on malware checks.

    - Change backfill function to invoke `IMalwareCheckService` interface
    - Add support for `kwargs to `IMalwareCheckService` interface
    - Rename variable from reserved word `file` to `release_file`
    - Add `FatalCheckException` for non-retryable exceptions
    - Replace `MALWARE_CHECK_BACKEND` in dev/environment

* Make `IMalwareService` the entrypoint for `run_check`

- Add `run_scheduled_check` task that invokes this interface.
- Remove useless utility method
- Move `FatalCheckException` into warehouse/malware/errors.py.

dev/environment

@@ -29,8 +29,7 @@ MAIL_BACKEND=warehouse.email.services.SMTPEmailSender host=smtp port=2525 ssl=fa
 
 BREACHED_PASSWORDS=warehouse.accounts.NullPasswordBreachedService
 
-#TODO: change this to PrinterMalwareCheckService before deploy
-MALWARE_CHECK_BACKEND=warehouse.malware.services.DatabaseMalwareCheckService
+MALWARE_CHECK_BACKEND=warehouse.malware.services.PrinterMalwareCheckService
 
 METRICS_BACKEND=warehouse.metrics.DataDogMetrics host=notdatadog
 

tests/common/checks/hooked.py

@@ -11,6 +11,7 @@
 # limitations under the License.
 
 from warehouse.malware.checks.base import MalwareCheckBase
+from warehouse.malware.errors import FatalCheckException
 from warehouse.malware.models import VerdictClassification, VerdictConfidence
 
 
@@ -29,7 +30,7 @@ def __init__(self, db):
     def scan(self, **kwargs):
         file_id = kwargs.get("obj_id")
         if file_id is None:
-            return
+            raise FatalCheckException("Missing required kwarg `obj_id`")
 
         self.add_verdict(
             file_id=file_id,

tests/unit/admin/views/test_checks.py

@@ -17,7 +17,7 @@
 
 from warehouse.admin.views import checks as views
 from warehouse.malware.models import MalwareCheckState, MalwareCheckType
-from warehouse.malware.tasks import backfill, run_check
+from warehouse.malware.tasks import backfill, run_scheduled_check
 
 from ....common.db.malware import MalwareCheckFactory
 
@@ -208,7 +208,7 @@ def test_success(self, db_request, check_type):
             assert db_request.session.flash.calls == [
                 pretend.call("Running %s now!" % check.name, queue="success",)
             ]
-            assert db_request.task.calls == [pretend.call(run_check)]
+            assert db_request.task.calls == [pretend.call(run_scheduled_check)]
             assert backfill_recorder.delay.calls == [
                 pretend.call(check.name, manually_triggered=True)
             ]

tests/unit/malware/checks/setup_patterns/test_check.py

@@ -43,9 +43,8 @@ def test_scan_missing_kwargs(db_session, obj, file_url):
         name="SetupPatternCheck", state=MalwareCheckState.Enabled
     )
     check = c.SetupPatternCheck(db_session)
-    check.scan(obj=obj, file_url=file_url)
-
-    assert check._verdicts == []
+    with pytest.raises(c.FatalCheckException):
+        check.scan(obj=obj, file_url=file_url)
 
 
 def test_scan_non_sdist(db_session):

tests/unit/malware/test_init.py

@@ -17,9 +17,8 @@
 from celery.schedules import crontab
 
 from warehouse import malware
-from warehouse.malware import utils
 from warehouse.malware.interfaces import IMalwareCheckService
-from warehouse.malware.tasks import run_check
+from warehouse.malware.tasks import run_scheduled_check
 
 from ...common import checks as test_checks
 from ...common.db.accounts import UserFactory
@@ -30,7 +29,7 @@ def test_determine_malware_checks_no_checks(monkeypatch, db_request):
     def get_enabled_hooked_checks(session):
         return defaultdict(list)
 
-    monkeypatch.setattr(utils, "get_enabled_hooked_checks", get_enabled_hooked_checks)
+    monkeypatch.setattr(malware, "get_enabled_hooked_checks", get_enabled_hooked_checks)
 
     project = ProjectFactory.create(name="foo")
     release = ReleaseFactory.create(project=project)
@@ -49,7 +48,7 @@ def get_enabled_hooked_checks(session):
         result["Release"] = ["Check3"]
         return result
 
-    monkeypatch.setattr(utils, "get_enabled_hooked_checks", get_enabled_hooked_checks)
+    monkeypatch.setattr(malware, "get_enabled_hooked_checks", get_enabled_hooked_checks)
 
     project = ProjectFactory.create(name="foo")
     release = ReleaseFactory.create(project=project)
@@ -68,7 +67,7 @@ def get_enabled_hooked_checks(session):
         result["Release"] = ["Check3"]
         return result
 
-    monkeypatch.setattr(utils, "get_enabled_hooked_checks", get_enabled_hooked_checks)
+    monkeypatch.setattr(malware, "get_enabled_hooked_checks", get_enabled_hooked_checks)
 
     user = UserFactory.create()
 
@@ -85,7 +84,7 @@ def get_enabled_hooked_checks(session):
         result["Release"] = ["Check3"]
         return result
 
-    monkeypatch.setattr(utils, "get_enabled_hooked_checks", get_enabled_hooked_checks)
+    monkeypatch.setattr(malware, "get_enabled_hooked_checks", get_enabled_hooked_checks)
 
     project = ProjectFactory.create(name="foo")
     release = ReleaseFactory.create(project=project)
@@ -105,7 +104,7 @@ def get_enabled_hooked_checks(session):
         result["Release"] = ["Check3"]
         return result
 
-    monkeypatch.setattr(utils, "get_enabled_hooked_checks", get_enabled_hooked_checks)
+    monkeypatch.setattr(malware, "get_enabled_hooked_checks", get_enabled_hooked_checks)
 
     project = ProjectFactory.create(name="foo")
     release = ReleaseFactory.create(project=project)
@@ -179,6 +178,8 @@ def test_includeme(monkeypatch):
 
     assert config.add_periodic_task.calls == [
         pretend.call(
-            crontab(minute="0", hour="*/8"), run_check, args=("ExampleScheduledCheck",)
+            crontab(minute="0", hour="*/8"),
+            run_scheduled_check,
+            args=("ExampleScheduledCheck",),
         )
     ]

tests/unit/malware/test_services.py

@@ -11,6 +11,7 @@
 # limitations under the License.
 
 import pretend
+import pytest
 
 from zope.interface.verify import verifyClass
 
@@ -31,13 +32,14 @@ def test_create_service(self):
         service = PrinterMalwareCheckService.create_service(None, request)
         assert service.executor == print
 
-    def test_run_checks(self, capfd):
+    @pytest.mark.parametrize(("kwargs"), [{}, {"manually_triggered": True}])
+    def test_run_checks(self, capfd, kwargs):
         request = pretend.stub()
         service = PrinterMalwareCheckService.create_service(None, request)
         checks = ["one", "two", "three"]
-        service.run_checks(checks)
+        service.run_checks(checks, **kwargs)
         out, err = capfd.readouterr()
-        assert out == "one\ntwo\nthree\n"
+        assert out == "".join(["%s %s\n" % (check, kwargs) for check in checks])
 
 
 class TestDatabaseMalwareService:
@@ -50,12 +52,36 @@ def test_create_service(self, db_request):
         service = DatabaseMalwareCheckService.create_service(None, db_request)
         assert service.executor == db_request.task(run_check).delay
 
-    def test_run_checks(self, db_request):
-        _delay = pretend.call_recorder(lambda *args: None)
+    def test_run_hooked_check(self, db_request):
+        _delay = pretend.call_recorder(lambda *args, **kwargs: None)
+        db_request.task = lambda x: pretend.stub(delay=_delay)
+        service = DatabaseMalwareCheckService.create_service(None, db_request)
+        checks = [
+            "MyTestCheck:ba70267f-fabf-496f-9ac2-d237a983b187",
+            "AnotherCheck:44f57b0e-c5b0-47c5-8713-341cf392efe2",
+            "FinalCheck:e8518a15-8f01-430e-8f5b-87644007c9c0",
+        ]
+        service.run_checks(checks)
+        assert _delay.calls == [
+            pretend.call("MyTestCheck", obj_id="ba70267f-fabf-496f-9ac2-d237a983b187"),
+            pretend.call("AnotherCheck", obj_id="44f57b0e-c5b0-47c5-8713-341cf392efe2"),
+            pretend.call("FinalCheck", obj_id="e8518a15-8f01-430e-8f5b-87644007c9c0"),
+        ]
+
+    def test_run_scheduled_check(self, db_request):
+        _delay = pretend.call_recorder(lambda *args, **kwargs: None)
         db_request.task = lambda x: pretend.stub(delay=_delay)
         service = DatabaseMalwareCheckService.create_service(None, db_request)
-        checks = ["MyTestCheck:ba70267f-fabf-496f-9ac2-d237a983b187"]
+        checks = ["MyTestScheduledCheck"]
         service.run_checks(checks)
+        assert _delay.calls == [pretend.call("MyTestScheduledCheck")]
+
+    def test_run_triggered_check(self, db_request):
+        _delay = pretend.call_recorder(lambda *args, **kwargs: None)
+        db_request.task = lambda x: pretend.stub(delay=_delay)
+        service = DatabaseMalwareCheckService.create_service(None, db_request)
+        checks = ["MyTriggeredCheck"]
+        service.run_checks(checks, manually_triggered=True)
         assert _delay.calls == [
-            pretend.call("MyTestCheck", "ba70267f-fabf-496f-9ac2-d237a983b187")
+            pretend.call("MyTriggeredCheck", manually_triggered=True)
         ]

tests/unit/malware/test_tasks.py

@@ -16,6 +16,7 @@
 
 from warehouse.malware import tasks
 from warehouse.malware.models import MalwareCheck, MalwareCheckState, MalwareVerdict
+from warehouse.malware.services import PrinterMalwareCheckService
 
 from ...common import checks as test_checks
 from ...common.db.malware import MalwareCheckFactory, MalwareVerdictFactory
@@ -101,6 +102,28 @@ def test_missing_check(self, db_request, monkeypatch):
                 task, db_request, "DoesNotExistCheck",
             )
 
+    def test_missing_obj_id(self, db_session, monkeypatch):
+        monkeypatch.setattr(tasks, "checks", test_checks)
+        task = pretend.stub()
+
+        MalwareCheckFactory.create(
+            name="ExampleHookedCheck", state=MalwareCheckState.Enabled
+        )
+        task = pretend.stub()
+
+        request = pretend.stub(
+            db=db_session,
+            log=pretend.stub(error=pretend.call_recorder(lambda *args, **kwargs: None)),
+        )
+
+        tasks.run_check(task, request, "ExampleHookedCheck")
+
+        assert request.log.error.calls == [
+            pretend.call(
+                "Fatal exception: ExampleHookedCheck: Missing required kwarg `obj_id`"
+            )
+        ]
+
     def test_retry(self, db_session, monkeypatch):
         monkeypatch.setattr(tasks, "checks", test_checks)
         exc = Exception("Scan failed")
@@ -135,6 +158,37 @@ def scan(self, **kwargs):
         assert task.retry.calls == [pretend.call(exc=exc)]
 
 
+class TestRunScheduledCheck:
+    def test_invalid_check_name(self, db_request, monkeypatch):
+        monkeypatch.setattr(tasks, "checks", test_checks)
+        task = pretend.stub()
+        with pytest.raises(AttributeError):
+            tasks.run_scheduled_check(task, db_request, "DoesNotExist")
+
+    def test_run_check(self, db_session, capfd, monkeypatch):
+        MalwareCheckFactory.create(
+            name="ExampleScheduledCheck", state=MalwareCheckState.Enabled
+        )
+
+        request = pretend.stub(
+            db=db_session,
+            find_service_factory=pretend.call_recorder(
+                lambda interface: PrinterMalwareCheckService.create_service
+            ),
+        )
+
+        task = pretend.stub()
+
+        tasks.run_scheduled_check(task, request, "ExampleScheduledCheck")
+
+        assert request.find_service_factory.calls == [
+            pretend.call(tasks.IMalwareCheckService)
+        ]
+
+        out, err = capfd.readouterr()
+        assert out == "ExampleScheduledCheck {'manually_triggered': False}\n"
+
+
 class TestBackfill:
     def test_invalid_check_name(self, db_request, monkeypatch):
         monkeypatch.setattr(tasks, "checks", test_checks)
@@ -145,33 +199,47 @@ def test_invalid_check_name(self, db_request, monkeypatch):
     @pytest.mark.parametrize(
         ("num_objects", "num_runs"), [(11, 1), (11, 11), (101, 90)]
     )
-    def test_run(self, db_session, num_objects, num_runs, monkeypatch):
+    def test_run(self, db_session, capfd, num_objects, num_runs, monkeypatch):
         monkeypatch.setattr(tasks, "checks", test_checks)
+
+        ids = []
         for i in range(num_objects):
-            FileFactory.create()
+            ids.append(FileFactory.create().id)
 
         MalwareCheckFactory.create(
             name="ExampleHookedCheck", state=MalwareCheckState.Enabled
         )
 
-        enqueue_recorder = pretend.stub(
-            delay=pretend.call_recorder(lambda *a, **kw: None)
-        )
-        task = pretend.call_recorder(lambda *args, **kwargs: enqueue_recorder)
-
         request = pretend.stub(
             db=db_session,
             log=pretend.stub(info=pretend.call_recorder(lambda *args, **kwargs: None)),
-            task=task,
+            find_service_factory=pretend.call_recorder(
+                lambda interface: PrinterMalwareCheckService.create_service
+            ),
         )
 
+        task = pretend.stub()
+
         tasks.backfill(task, request, "ExampleHookedCheck", num_runs)
 
         assert request.log.info.calls == [
             pretend.call("Running backfill on %d Files." % num_runs)
         ]
 
-        assert len(enqueue_recorder.delay.calls) == num_runs
+        assert request.find_service_factory.calls == [
+            pretend.call(tasks.IMalwareCheckService)
+        ]
+
+        out, err = capfd.readouterr()
+        num_output_lines = 0
+        for file_id in ids:
+            logged_output = "ExampleHookedCheck:%s %s\n" % (
+                file_id,
+                {"manually_triggered": True},
+            )
+            num_output_lines += 1 if logged_output in out else 0
+
+        assert num_output_lines == num_runs
 
 
 class TestSyncChecks:

warehouse/admin/views/checks.py

@@ -15,7 +15,7 @@
 from sqlalchemy.orm.exc import NoResultFound
 
 from warehouse.malware.models import MalwareCheck, MalwareCheckState, MalwareCheckType
-from warehouse.malware.tasks import backfill, remove_verdicts, run_check
+from warehouse.malware.tasks import backfill, remove_verdicts, run_scheduled_check
 
 EVALUATION_RUN_SIZE = 10000
 
@@ -94,7 +94,7 @@ def run_evaluation(request):
 
     else:
         request.session.flash(f"Running {check.name} now!", queue="success")
-        request.task(run_check).delay(check.name, manually_triggered=True)
+        request.task(run_scheduled_check).delay(check.name, manually_triggered=True)
 
     return HTTPSeeOther(
         request.route_path("admin.checks.detail", check_name=check.name)

warehouse/malware/__init__.py

@@ -17,9 +17,10 @@
 import warehouse.malware.checks as checks
 
 from warehouse import db
-from warehouse.malware import utils
 from warehouse.malware.interfaces import IMalwareCheckService
-from warehouse.malware.tasks import run_check
+from warehouse.malware.models import MalwareCheckObjectType
+from warehouse.malware.tasks import run_scheduled_check
+from warehouse.malware.utils import get_enabled_hooked_checks
 
 
 @db.listens_for(db.Session, "after_flush")
@@ -31,13 +32,13 @@ def determine_malware_checks(config, session, flush_context):
         [
             obj.__class__.__name__
             for obj in session.new
-            if obj.__class__.__name__ in utils.valid_check_types()
+            if obj.__class__.__name__ in MalwareCheckObjectType.__members__
         ]
     ):
         return
 
     malware_checks = session.info.setdefault("warehouse.malware.checks", set())
-    enabled_checks = utils.get_enabled_hooked_checks(session)
+    enabled_checks = get_enabled_hooked_checks(session)
     for obj in session.new:
         for check_name in enabled_checks.get(obj.__class__.__name__, []):
             malware_checks.update([f"{check_name}:{obj.id}"])
@@ -71,5 +72,5 @@ def includeme(config):
         check = check_obj[1]
         if check.check_type == "scheduled":
             config.add_periodic_task(
-                crontab(**check.schedule), run_check, args=(check_obj[0],)
+                crontab(**check.schedule), run_scheduled_check, args=(check_obj[0],)
             )