fix: define-cloud to mod assignments with future schedules

closes: #546

Change-Id: I033ee39a984451fc247c0afe3c356bd6675ef816

Author: grafuls

src/quads/cli/cli.py

@@ -936,26 +936,12 @@ def action_cloudresource(self):
                     ) as ex:  # pragma: no cover
                         raise CliException(str(ex))
             elif assignment:
-                try:
-                    response = self.quads.update_assignment(assignment.id, data)
-                    self.quads.update_cloud(
-                        cloud.name,
-                        {
-                            "last_redefined": ":".join(
-                                datetime.now().isoformat().split(":")[:-1]
-                            )
-                        },
-                    )
-
-                except (APIServerException, APIBadRequest) as ex:  # pragma: no cover
-                    raise CliException(str(ex))
-                if response.status_code == 200:
-                    self.logger.info("Assignment updated.")
+                raise CliException("Cloud already has an active assignment.")
             else:
                 if self.cli_args.get("cloud") != conf.get("spare_pool_name"):
                     if not self.cli_args.get("cloudticket"):
                         self.logger.warning("No ticket provided.")
-                    self.logger.warning("No assignment created or updated.")
+                    self.logger.warning("No assignment created.")
 
         except ConnectionError:  # pragma: no cover
             raise CliException(

src/quads/server/dao/cloud.py

@@ -1,7 +1,7 @@
 from datetime import datetime
 from typing import List, Optional, Type
 
-from sqlalchemy import Boolean, or_
+from sqlalchemy import Boolean, or_, select
 
 from quads.config import Config
 from quads.server.dao.baseDao import (
@@ -72,6 +72,12 @@ def get_clouds() -> List[Cloud]:
 
     @staticmethod
     def get_free_clouds() -> List[Cloud]:
+        future_schedule_subquery = (
+            select(Schedule.id)
+            .join(Assignment, Schedule.assignment_id == Assignment.id)
+            .filter(Assignment.cloud_id == Cloud.id, Schedule.start > datetime.now())
+            .exists()
+        )
         free_clouds = (
             db.session.query(Cloud)
             .outerjoin(Assignment, Cloud.id == Assignment.cloud_id)
@@ -83,6 +89,7 @@ def get_free_clouds() -> List[Cloud]:
                     Assignment.id == None,
                     Schedule.id == None,
                 ),
+                ~future_schedule_subquery,
             )
             .order_by(Cloud.name.asc())
             .distinct()