fix(reports): increase crontab size and alert fixes

superset/config.py

@@ -803,6 +803,10 @@ class CeleryConfig:  # pylint: disable=too-few-public-methods
 # if it meets the criteria
 ENABLE_ALERTS = False
 
+# Used for Alerts/Reports (Feature flask ALERT_REPORTS) to set the size for the
+# sliding cron window size, should be synced with the celery beat config minus 1 second
+ALERT_REPORTS_CRON_WINDOW_SIZE = 59
+
 # Slack API token for the superset reports
 SLACK_API_TOKEN = None
 SLACK_PROXY = None

superset/migrations/versions/ab104a954a8f_reports_alter_crontab_size.py

@@ -0,0 +1,50 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+"""reports alter crontab size
+
+Revision ID: ab104a954a8f
+Revises: 5daced1f0e76
+Create Date: 2020-12-15 09:07:24.730545
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = "ab104a954a8f"
+down_revision = "c25cb2c78727"
+
+import sqlalchemy as sa
+from alembic import op
+
+
+def upgrade():
+    with op.batch_alter_table("report_schedule") as batch_op:
+        batch_op.alter_column(
+            "crontab",
+            existing_type=sa.VARCHAR(length=50),
+            type_=sa.VARCHAR(length=1000),
+            existing_nullable=False,
+        )
+
+
+def downgrade():
+    with op.batch_alter_table("report_schedule") as batch_op:
+        batch_op.alter_column(
+            "crontab",
+            existing_type=sa.VARCHAR(length=1000),
+            type_=sa.VARCHAR(length=50),
+            existing_nullable=False,
+        )

superset/models/reports.py

@@ -98,7 +98,7 @@ class ReportSchedule(Model, AuditMixinNullable):
     description = Column(Text)
     context_markdown = Column(Text)
     active = Column(Boolean, default=True, index=True)
-    crontab = Column(String(50), nullable=False)
+    crontab = Column(String(1000), nullable=False)
     sql = Column(Text())
     # (Alerts/Reports) M-O to chart
     chart_id = Column(Integer, ForeignKey("slices.id"), nullable=True)

superset/reports/commands/alert.py

@@ -26,6 +26,7 @@
 from superset.commands.base import BaseCommand
 from superset.models.reports import ReportSchedule, ReportScheduleValidatorType
 from superset.reports.commands.exceptions import (
+    AlertQueryError,
     AlertQueryInvalidTypeError,
     AlertQueryMultipleColumnsError,
     AlertQueryMultipleRowsError,
@@ -47,7 +48,7 @@ def run(self) -> bool:
         self.validate()
 
         if self._report_schedule.validator_type == ReportScheduleValidatorType.NOT_NULL:
-            self._report_schedule.last_value_row_json = self._result
+            self._report_schedule.last_value_row_json = str(self._result)
             return self._result not in (0, None, np.nan)
         self._report_schedule.last_value = self._result
         try:
@@ -60,9 +61,11 @@ def run(self) -> bool:
             raise AlertValidatorConfigError()
 
     def _validate_not_null(self, rows: np.recarray) -> None:
+        self._validate_result(rows)
         self._result = rows[0][1]
 
-    def _validate_operator(self, rows: np.recarray) -> None:
+    @staticmethod
+    def _validate_result(rows: np.recarray) -> None:
         # check if query return more then one row
         if len(rows) > 1:
             raise AlertQueryMultipleRowsError(
@@ -80,6 +83,9 @@ def _validate_operator(self, rows: np.recarray) -> None:
                     % (len(rows[0]) - 1)
                 )
             )
+
+    def _validate_operator(self, rows: np.recarray) -> None:
+        self._validate_result(rows)
         if rows[0][1] is None:
             return
         try:
@@ -97,7 +103,10 @@ def validate(self) -> None:
             database=self._report_schedule.database
         )
         rendered_sql = sql_template.process_template(self._report_schedule.sql)
-        df = self._report_schedule.database.get_df(rendered_sql)
+        try:
+            df = self._report_schedule.database.get_df(rendered_sql)
+        except Exception as ex:
+            raise AlertQueryError(message=str(ex))
 
         if df.empty:
             return

superset/reports/commands/exceptions.py

@@ -151,6 +151,10 @@ class AlertQueryInvalidTypeError(CommandException):
     message = _("Alert query returned a non-number value.")
 
 
+class AlertQueryError(CommandException):
+    message = _("Alert found an error while executing a query.")
+
+
 class ReportScheduleAlertGracePeriodError(CommandException):
     message = _("Alert fired during grace period.")
 

superset/reports/logs/api.py

@@ -22,7 +22,7 @@
 from flask_appbuilder.api.schemas import get_item_schema, get_list_schema
 from flask_appbuilder.models.sqla.interface import SQLAInterface
 
-from superset.constants import RouteMethod
+from superset.constants import MODEL_API_RW_METHOD_PERMISSION_MAP, RouteMethod
 from superset.models.reports import ReportExecutionLog
 from superset.reports.logs.schemas import openapi_spec_methods_override
 from superset.views.base_api import BaseSupersetModelRestApi
@@ -34,6 +34,8 @@ class ReportExecutionLogRestApi(BaseSupersetModelRestApi):
     datamodel = SQLAInterface(ReportExecutionLog)
 
     include_route_methods = {RouteMethod.GET, RouteMethod.GET_LIST}
+    method_permission_name = MODEL_API_RW_METHOD_PERMISSION_MAP
+
     class_permission_name = "ReportSchedule"
     resource_name = "report"
     allow_browser_login = True

superset/reports/schemas.py

@@ -139,7 +139,7 @@ class ReportSchedulePostSchema(Schema):
     active = fields.Boolean()
     crontab = fields.String(
         description=crontab_description,
-        validate=[validate_crontab, Length(1, 50)],
+        validate=[validate_crontab, Length(1, 1000)],
         example="*/5 * * * *",
         allow_none=False,
         required=True,
@@ -192,7 +192,7 @@ class ReportSchedulePutSchema(Schema):
     active = fields.Boolean(required=False)
     crontab = fields.String(
         description=crontab_description,
-        validate=[validate_crontab, Length(1, 50)],
+        validate=[validate_crontab, Length(1, 1000)],
         required=False,
     )
     sql = fields.String(

superset/tasks/scheduler.py

@@ -20,6 +20,7 @@
 
 import croniter
 
+from superset import app
 from superset.commands.exceptions import CommandException
 from superset.extensions import celery_app
 from superset.reports.commands.execute import AsyncExecuteReportScheduleCommand
@@ -30,7 +31,8 @@
 logger = logging.getLogger(__name__)
 
 
-def cron_schedule_window(cron: str, window_size: int = 10) -> Iterator[datetime]:
+def cron_schedule_window(cron: str) -> Iterator[datetime]:
+    window_size = app.config["ALERT_REPORTS_CRON_WINDOW_SIZE"]
     utc_now = datetime.utcnow()
     start_at = utc_now - timedelta(seconds=1)
     stop_at = utc_now + timedelta(seconds=window_size)