add update workflow functionality

jupyter_scheduler/models.py

@@ -86,7 +86,7 @@ class CreateJob(BaseModel):
     output_filename_template: Optional[str] = OUTPUT_FILENAME_TEMPLATE
     compute_type: Optional[str] = None
     package_input_folder: Optional[bool] = None
-    depends_on: Optional[str] = None
+    depends_on: Optional[List[str]] = None
     workflow_id: str = None
 
     @root_validator
@@ -150,7 +150,7 @@ class DescribeJob(BaseModel):
     downloaded: bool = False
     package_input_folder: Optional[bool] = None
     packaged_files: Optional[List[str]] = []
-    depends_on: Optional[str] = None
+    depends_on: Optional[List[str]] = None
     workflow_id: str = None
 
     class Config:
@@ -197,7 +197,7 @@ class UpdateJob(BaseModel):
     status: Optional[Status] = None
     name: Optional[str] = None
     compute_type: Optional[str] = None
-    depends_on: Optional[str] = None
+    depends_on: Optional[List[str]] = None
 
 
 class DeleteJob(BaseModel):

jupyter_scheduler/scheduler.py

@@ -570,13 +570,20 @@ def get_workflow(self, workflow_id: str) -> DescribeWorkflow:
         return model
 
     def create_workflow_task(self, workflow_id: str, model: CreateJob) -> str:
-        job_id = self.scheduler.create_job(model, run=False)
-        workflow: DescribeWorkflow = self.scheduler.get_workflow(workflow_id)
+        job_id = self.create_job(model, run=False)
+        workflow: DescribeWorkflow = self.get_workflow(workflow_id)
         updated_tasks = (workflow.tasks or [])[:]
         updated_tasks.append(job_id)
-        self.scheduler.update_workflow(workflow_id, UpdateWorkflow(depends_on=updated_tasks))
+        self.update_workflow(workflow_id, UpdateWorkflow(tasks=updated_tasks))
         return job_id
 
+    def update_workflow(self, workflow_id: str, model: UpdateWorkflow):
+        with self.db_session() as session:
+            session.query(Workflow).filter(Workflow.workflow_id == workflow_id).update(
+                model.dict(exclude_none=True)
+            )
+            session.commit()
+
     def update_job(self, job_id: str, model: UpdateJob):
         with self.db_session() as session:
             session.query(Job).filter(Job.job_id == job_id).update(model.dict(exclude_none=True))

jupyter_scheduler/workflows.py

@@ -173,16 +173,8 @@ class Config:
 
 
 class UpdateWorkflow(BaseModel):
-    workflow_id: str
-    tasks: List[str] = None
-    status: Status = None
+    tasks: Optional[List[str]] = None
+    status: Optional[Status] = None
 
     class Config:
         orm_mode = True
-
-
-class UpdateWorkflow(BaseModel):
-    status: Optional[Status] = None
-    name: Optional[str] = None
-    compute_type: Optional[str] = None
-    depends_on: Optional[str] = None