<@ULVA73B9P> when flows are deployed to a cloud in...
# ask-marvin
k
@Marvin when flows are deployed to a cloud instance, assuming the flow function and flow_name do not change, will the deployment ID be the same after its deployed a 2nd time
m
After reviewing the available information, it appears that each deployment will always have a unique deployment ID. Deployments are treated as unique entities, even if the flow function and flow name remain unchanged. The deployment ID will not be the same after a second deployment. For further details, check the official Prefect documentation on deployment creation and management: https://docs.prefect.io/latest/guides/automations/ If you have any further questions, feel free to ask!
k
@marvin What should be passed to run_deployment given the deploymentId will change
@Marvin What should be passed to run_deployment given the deploymentId will change
m
To use
run_deployment
effectively given that the deployment ID changes, you should dynamically retrieve the most recent deployment ID each time you need to run a deployment. Here's a step-by-step approach: 1. Retrieve the Latest Deployment ID: Use the Prefect CLI or the API to list and filter deployments. For example:
Copy code
shell
   prefect deployment ls --name "<your-flow-name>"
This command will list all deployments of a given flow, including their IDs. 2. Pass the Deployment ID to
run_deployment
: Once you have the deployment ID, you can call
run_deployment
with the retrieved ID. Here is a code example in Python to illustrate this:
Copy code
python
from prefect import flow
from prefect.deployments import run_deployment
from prefect.client import get_client

async def get_deployment_id(flow_name: str, deployment_name: str) -> str:
    async with get_client() as client:
        deployments = await client.read_deployments(name=deployment_name, flow_name=flow_name)
        if not deployments:
            raise ValueError("No deployments found for the specified flow and deployment name.")
        return deployments[0].id  # Assuming you take the first one

# Example usage to run a deployment
async def trigger_deployment():
    deployment_id = await get_deployment_id("your_flow_name", "your_deployment_name")
    # Now pass the deployment ID to run_deployment
    await run_deployment(deployment_id)
For more details, you can refer to the Prefect documentation and deployment concepts. By dynamically retrieving the deployment ID, you ensure that
run_deployment
always has the correct and updated deployment ID to work with.