Add wipe-out functionality (#7202)

* Add wipe-out functionality

Related: #7133

* Call list explicitly

tests/common/db/malware.py

@@ -20,9 +20,13 @@
     MalwareCheckObjectType,
     MalwareCheckState,
     MalwareCheckType,
+    MalwareVerdict,
+    VerdictClassification,
+    VerdictConfidence,
 )
 
 from .base import WarehouseFactory
+from .packaging import FileFactory
 
 
 class MalwareCheckFactory(WarehouseFactory):
@@ -33,9 +37,20 @@ class Meta:
     version = 1
     short_description = factory.fuzzy.FuzzyText(length=80)
     long_description = factory.fuzzy.FuzzyText(length=300)
-    check_type = factory.fuzzy.FuzzyChoice([e for e in MalwareCheckType])
-    hooked_object = factory.fuzzy.FuzzyChoice([e for e in MalwareCheckObjectType])
-    state = factory.fuzzy.FuzzyChoice([e for e in MalwareCheckState])
+    check_type = factory.fuzzy.FuzzyChoice(list(MalwareCheckType))
+    hooked_object = factory.fuzzy.FuzzyChoice(list(MalwareCheckObjectType))
+    state = factory.fuzzy.FuzzyChoice(list(MalwareCheckState))
     created = factory.fuzzy.FuzzyNaiveDateTime(
         datetime.datetime.utcnow() - datetime.timedelta(days=7)
     )
+
+
+class MalwareVerdictFactory(WarehouseFactory):
+    class Meta:
+        model = MalwareVerdict
+
+    check = factory.SubFactory(MalwareCheckFactory)
+    release_file = factory.SubFactory(FileFactory)
+    classification = factory.fuzzy.FuzzyChoice(list(VerdictClassification))
+    confidence = factory.fuzzy.FuzzyChoice(list(VerdictConfidence))
+    message = factory.fuzzy.FuzzyText(length=80)

tests/unit/admin/views/test_checks.py

@@ -67,27 +67,41 @@ def test_get_check_not_found(self, db_request):
 
 
 class TestChangeCheckState:
-    def test_change_to_enabled(self, db_request):
+    @pytest.mark.parametrize(
+        ("final_state"), [MalwareCheckState.disabled, MalwareCheckState.wiped_out]
+    )
+    def test_change_to_valid_state(self, db_request, final_state):
         check = MalwareCheckFactory.create(
             name="MyCheck", state=MalwareCheckState.disabled
         )
 
-        db_request.POST = {"id": check.id, "check_state": "enabled"}
+        db_request.POST = {"id": check.id, "check_state": final_state.value}
         db_request.matchdict["check_name"] = check.name
 
         db_request.session = pretend.stub(
             flash=pretend.call_recorder(lambda *a, **kw: None)
         )
+        wipe_out_recorder = pretend.stub(
+            delay=pretend.call_recorder(lambda *a, **kw: None)
+        )
+        db_request.task = pretend.call_recorder(lambda *a, **kw: wipe_out_recorder)
+
         db_request.route_path = pretend.call_recorder(
             lambda *a, **kw: "/admin/checks/MyCheck/change_state"
         )
 
         views.change_check_state(db_request)
 
         assert db_request.session.flash.calls == [
-            pretend.call("Changed 'MyCheck' check to 'enabled'!", queue="success")
+            pretend.call(
+                "Changed 'MyCheck' check to '%s'!" % final_state.value, queue="success"
+            )
         ]
-        assert check.state == MalwareCheckState.enabled
+
+        assert check.state == final_state
+
+        if final_state == MalwareCheckState.wiped_out:
+            assert wipe_out_recorder.delay.calls == [pretend.call("MyCheck")]
 
     def test_change_to_invalid_state(self, db_request):
         check = MalwareCheckFactory.create(name="MyCheck")

tests/unit/malware/test_tasks.py

@@ -19,9 +19,9 @@
 import warehouse.malware.checks as checks
 
 from warehouse.malware.models import MalwareCheck, MalwareCheckState, MalwareVerdict
-from warehouse.malware.tasks import run_check, sync_checks
+from warehouse.malware.tasks import remove_verdicts, run_check, sync_checks
 
-from ...common.db.malware import MalwareCheckFactory
+from ...common.db.malware import MalwareCheckFactory, MalwareVerdictFactory
 from ...common.db.packaging import FileFactory, ProjectFactory, ReleaseFactory
 
 
@@ -255,3 +255,55 @@ def test_only_wiped_out(self, db_session):
 from codebase."
             ),
         ]
+
+
+class TestRemoveVerdicts:
+    def test_no_verdicts(self, db_session):
+        check = MalwareCheckFactory.create()
+
+        request = pretend.stub(
+            db=db_session,
+            log=pretend.stub(info=pretend.call_recorder(lambda *args, **kwargs: None),),
+        )
+        task = pretend.stub()
+        remove_verdicts(task, request, check.name)
+
+        assert request.log.info.calls == [
+            pretend.call(
+                "Removing 0 malware verdicts associated with %s version 1." % check.name
+            ),
+        ]
+
+    @pytest.mark.parametrize(("check_with_verdicts"), [True, False])
+    def test_many_verdicts(self, db_session, check_with_verdicts):
+        check0 = MalwareCheckFactory.create()
+        check1 = MalwareCheckFactory.create()
+        project = ProjectFactory.create(name="foo")
+        release = ReleaseFactory.create(project=project)
+        file0 = FileFactory.create(release=release, filename="foo.bar")
+        num_verdicts = 10
+
+        for i in range(num_verdicts):
+            MalwareVerdictFactory.create(check=check1, release_file=file0)
+
+        request = pretend.stub(
+            db=db_session,
+            log=pretend.stub(info=pretend.call_recorder(lambda *args, **kwargs: None),),
+        )
+
+        task = pretend.stub()
+
+        if check_with_verdicts:
+            wiped_out_check = check1
+        else:
+            wiped_out_check = check0
+            num_verdicts = 0
+
+        remove_verdicts(task, request, wiped_out_check.name)
+
+        assert request.log.info.calls == [
+            pretend.call(
+                "Removing %d malware verdicts associated with %s version 1."
+                % (num_verdicts, wiped_out_check.name)
+            ),
+        ]

warehouse/admin/views/checks.py

@@ -15,6 +15,7 @@
 from sqlalchemy.orm.exc import NoResultFound
 
 from warehouse.malware.models import MalwareCheck, MalwareCheckState
+from warehouse.malware.tasks import remove_verdicts
 
 
 @view_config(
@@ -80,6 +81,8 @@ def change_check_state(request):
     except (AttributeError, KeyError):
         request.session.flash("Invalid check state provided.", queue="error")
     else:
+        if check.state == MalwareCheckState.wiped_out:
+            request.task(remove_verdicts).delay(check.name)
         request.session.flash(
             f"Changed {check.name!r} check to {check.state.value!r}!", queue="success"
         )

warehouse/malware/tasks.py

@@ -14,7 +14,7 @@
 
 import warehouse.malware.checks as checks
 
-from warehouse.malware.models import MalwareCheck, MalwareCheckState
+from warehouse.malware.models import MalwareCheck, MalwareCheckState, MalwareVerdict
 from warehouse.malware.utils import get_check_fields
 from warehouse.tasks import task
 
@@ -86,3 +86,23 @@ def sync_checks(task, request):
             request.log.info("Adding new %s to the database." % check_name)
             fields = get_check_fields(check)
             request.db.add(MalwareCheck(**fields))
+
+
+@task(bind=True, ignore_result=True, acks_late=True)
+def remove_verdicts(task, request, check_name):
+    check_ids = (
+        request.db.query(MalwareCheck.id, MalwareCheck.version)
+        .filter(MalwareCheck.name == check_name)
+        .all()
+    )
+
+    for check_id, check_version in check_ids:
+        query = request.db.query(MalwareVerdict).filter(
+            MalwareVerdict.check_id == check_id
+        )
+        num_verdicts = query.count()
+        request.log.info(
+            "Removing %d malware verdicts associated with %s version %d."
+            % (num_verdicts, check_name, check_version)
+        )
+        query.delete(synchronize_session=False)