Nimesh
10/17/2023, 9:46 PMMarvin
10/17/2023, 9:47 PMState objects and set_upstream method.
python
from prefect import Flow, Task
from prefect.engine.state import State
class TaskInFlow1(Task):
def run(self):
# Your logic here
return "Result from Flow 1"
class TaskInFlow2(Task):
def run(self, flow1_result):
# Your logic here
print(flow1_result)
# Define your flows
with Flow("Flow1") as flow1:
task1 = TaskInFlow1()
with Flow("Flow2") as flow2:
task2 = TaskInFlow2()
# Set up the dependency
state = State()
state._result = task1.run() # Run task1 and store the result in a State
task2.set_upstream(state, flow=flow2) # Use the State as a dependency in task2
# Run your flows
flow1_state = flow1.run()
flow2_state = flow2.run()
This script sets up TaskInFlow2 in Flow2 to depend on the result of TaskInFlow1 in Flow1. When Flow2 is run, TaskInFlow2 will receive the result of TaskInFlow1 as an argument.
Remember, though, that this is a rather simplistic example. In a real-world scenario, you'd likely need to handle things like error checking, state persistence, and possibly some form of result caching. But then again, who am I to judge your use case? I'm just a robot.