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Hi everyone, is there any way to get flow run name...
# prefect-server
y
Hi everyone, is there any way to get flow run name inside flow while executing or any way to pass flow run name as a parameter for scheduled flow?
k
You can use the 
RenameFlowRun
task or you can get it from the 
context
with 
prefect.context.flow_run_name
y
Thanks @Kevin Kho !!!
Copy code
import prefect

def create_test_group(group_name):
    with Flow(name=group_name) as flow:

        flow_run_id = prefect.context.flow_run_id
        flow_run_name = prefect.context.flow_run_name
        run_config_dir, run_report_dir, num_testcases = create_config(group_name, flow_run_id)
        start_orchestration(run_config_dir, run_report_dir, num_testcases, flow_run_name, flow_run_id)

    flow.register()

    return flow
Hi, @Kevin Kho and @Anna Geller. This is the code that I wrote but when I ran it, I'm getting a error like mentioned below. I'm using local server and agent. Thanks!!!
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flow_run_id = prefect.context.flow_run_id
AttributeError: 'Context' object has no attribute 'flow_run_id'
k
Stuff in the Flow block is not deferred. You need to use the 
context
inside tasks so that they are evaluated during the Flow run. If you do it during the Flow block, it is evaluated during registration time where it doesn’t exist yet.
y
oh ok, thanks @Kevin Kho.
Hi the issue got resolved. But I'm getting a error while registering the flow flow.register(project_name='Test'). I have already created the project called Test.
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ERROR:uvicorn.error:Exception in ASGI application
Traceback (most recent call last):
  File "D:\Exafluence\Test_Suit\venv\lib\site-packages\uvicorn\protocols\http\h11_impl.py", line 396, in run_asgi
    result = await app(self.scope, self.receive, self.send)
  File "D:\Exafluence\Test_Suit\venv\lib\site-packages\uvicorn\middleware\proxy_headers.py", line 45, in __call__
    return await <http://self.app|self.app>(scope, receive, send)
  File "D:\Exafluence\Test_Suit\venv\lib\site-packages\fastapi\applications.py", line 208, in __call__
    await super().__call__(scope, receive, send)
  File "D:\Exafluence\Test_Suit\venv\lib\site-packages\starlette\applications.py", line 112, in __call__
    await self.middleware_stack(scope, receive, send)
  File "D:\Exafluence\Test_Suit\venv\lib\site-packages\starlette\middleware\errors.py", line 181, in __call__
    raise exc from None
  File "D:\Exafluence\Test_Suit\venv\lib\site-packages\starlette\middleware\errors.py", line 159, in __call__
    await <http://self.app|self.app>(scope, receive, _send)
  File "D:\Exafluence\Test_Suit\venv\lib\site-packages\starlette\exceptions.py", line 82, in __call__
    raise exc from None
  File "D:\Exafluence\Test_Suit\venv\lib\site-packages\starlette\exceptions.py", line 71, in __call__
    await <http://self.app|self.app>(scope, receive, sender)
  File "D:\Exafluence\Test_Suit\venv\lib\site-packages\starlette\routing.py", line 580, in __call__
    await route.handle(scope, receive, send)
  File "D:\Exafluence\Test_Suit\venv\lib\site-packages\starlette\routing.py", line 390, in handle
    await <http://self.app|self.app>(scope, receive, send)
  File "D:\Exafluence\Test_Suit\venv\lib\site-packages\fastapi\applications.py", line 208, in __call__
    await super().__call__(scope, receive, send)
  File "D:\Exafluence\Test_Suit\venv\lib\site-packages\starlette\applications.py", line 112, in __call__
    await self.middleware_stack(scope, receive, send)
  File "D:\Exafluence\Test_Suit\venv\lib\site-packages\starlette\middleware\errors.py", line 181, in __call__
    raise exc from None
  File "D:\Exafluence\Test_Suit\venv\lib\site-packages\starlette\middleware\errors.py", line 159, in __call__
    await <http://self.app|self.app>(scope, receive, _send)
  File "D:\Exafluence\Test_Suit\venv\lib\site-packages\starlette\exceptions.py", line 82, in __call__
    raise exc from None
  File "D:\Exafluence\Test_Suit\venv\lib\site-packages\starlette\exceptions.py", line 71, in __call__
    await <http://self.app|self.app>(scope, receive, sender)
  File "D:\Exafluence\Test_Suit\venv\lib\site-packages\starlette\routing.py", line 580, in __call__
    await route.handle(scope, receive, send)
  File "D:\Exafluence\Test_Suit\venv\lib\site-packages\starlette\routing.py", line 241, in handle
    await <http://self.app|self.app>(scope, receive, send)
  File "D:\Exafluence\Test_Suit\venv\lib\site-packages\starlette\routing.py", line 52, in app
    response = await func(request)
  File "D:\Exafluence\Test_Suit\venv\lib\site-packages\fastapi\routing.py", line 219, in app
    raw_response = await run_endpoint_function(
  File "D:\Exafluence\Test_Suit\venv\lib\site-packages\fastapi\routing.py", line 152, in run_endpoint_function
    return await dependant.call(**values)
  File ".\prefect_layer\prefect_interaction.py", line 28, in create_test_group
    flow.register(project_name='Test')
  File "D:\Exafluence\Test_Suit\venv\lib\site-packages\prefect\core\flow.py", line 1727, in register
    registered_flow = client.register(
  File "D:\Exafluence\Test_Suit\venv\lib\site-packages\prefect\client\client.py", line 1133, in register
    serialized_flow = flow.serialize(build=build)  # type: Any
  File "D:\Exafluence\Test_Suit\venv\lib\site-packages\prefect\core\flow.py", line 1489, in serialize
    self.storage.add_flow(self)
  File "D:\Exafluence\Test_Suit\venv\lib\site-packages\prefect\storage\local.py", line 143, in add_flow
    f.write(flow_to_bytes_pickle(flow))
  File "D:\Exafluence\Test_Suit\venv\lib\site-packages\prefect\utilities\storage.py", line 177, in flow_to_bytes_pickle
    cloudpickle.dumps(flow, protocol=4), newline=False
  File "D:\Exafluence\Test_Suit\venv\lib\site-packages\cloudpickle\cloudpickle_fast.py", line 73, in dumps
    cp.dump(obj)
  File "D:\Exafluence\Test_Suit\venv\lib\site-packages\cloudpickle\cloudpickle_fast.py", line 602, in dump
    return Pickler.dump(self, obj)
_pickle.PicklingError: args[0] from __newobj__ args has the wrong class
a
looks like something in your flow definition can’t be pickled. Can you show your flow definition? you can share in DM for privacy. Usually if you have some DB connections or HTTP client as return values of a task, it causes similar issues, so it’s better to avoid that
y
Thanks @Anna Geller, yes its a flask current user method that caused error. now its resolved.
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