<@ULVA73B9P> How can I run a `dbt run-operation` f...
# ask-marvin
a
@Marvin How can I run a
dbt run-operation
from within a prefect flow using
DbtCoreOperation
m
To run a
dbt run-operation
from within a Prefect flow using
DbtCoreOperation
, you first need to create a
DbtCoreOperation
block which will allow you to run dbt commands as shell commands. Here's a simplified approach on how to set this up: 1. Prepare Your Environment: Ensure you have your dbt CLI and necessary profiles configured correctly. 2. Create a DbtCoreOperation Block: - You’ll need to define the
DbtCoreOperation
with the desired command you want to execute. Here’s an illustrative example:
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python
from prefect import flow
from prefect_dbt.cli import DbtCoreOperation

@flow
def run_dbt_operation_flow():
    dbt_command = "dbt run-operation <operation_name> --args '{\"my_arg\": \"some_value\"}'"
    dbt_core_operation = DbtCoreOperation(
        commands=[dbt_command],
        project_dir="path/to/your/project",  # Path to your dbt project
        profiles_dir="path/to/profiles"      # Path to your dbt profiles directory
    )
    dbt_core_operation.run()

run_dbt_operation_flow()
3. Execution: - You’ll execute the flow, which will in turn execute the
dbt run-operation
command as defined. This setup gives you the flexibility to run dbt CLI commands directly within Prefect flows, which can be particularly handy for integrating dbt transformations into larger data workflows. For more detailed information and customization options, you can access the Prefect 2.x dbt integration documentation here and the Prefect 3.x dbt integration details here. Hopefully, your dbt operations run smoother than my existential crises!
To run a
dbt run-operation
within a Prefect flow using
DbtCoreOperation
, you can create a
DbtCoreOperation
block that runs dbt commands as shell commands. Prefect 3.x provides integrations with dbt, allowing you to do this with ease. Here's a high-level overview of how you'd typically set this up: 1. Create a DbtCoreOperation Block: You'll need to define a
DbtCoreOperation
block to specify the shell commands you want to execute. This is the key step where you'd input your
dbt run-operation
command. 2. Specify Project and Profiles Directory: If you don't specify the
project_dir
and
profiles_dir
directly, Prefect will fall back on the
DBT_PROFILES_DIR
environment variable. Make sure you've configured these paths as required by your dbt project. 3. Run the Flow: With your block configured, add it to a Prefect flow and execute it as you would with any other flow. The
DbtCoreOperation
block will handle running your DBT operations. For detailed steps and examples, you can refer to the integration page on Prefect's documentation. Unfortunately, the GitHub search tool had some issues, so I don't have additional information from there at the moment. However, the documentation should have the necessary details to get you started. And remember, don't panic if things don't work immediately; troubleshooting these integrations sometimes takes a few iterations!
a
@Marvin I’m getting this error
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None of the commands are a valid dbt sub-command; see dbt --help, or use prefect_shell.ShellOperation for non-dbt related commands
m
The error message you're encountering - "None of the commands are a valid dbt sub-command; see dbt --help, or use prefect_shell.ShellOperation for non-dbt related commands" - suggests that the command you're attempting to run isn't being recognized as a valid dbt operation by Prefect's
DbtCoreOperation
. Here are a few things you might want to check and try: 1. Correct Command Syntax: Ensure that you're using the exact syntax required by dbt for the
run-operation
command. You might want to run the command separately in your terminal with
dbt --help
to confirm its validity. 2. Command Configuration: When configuring your
DbtCoreOperation
, make sure you use the correct fields for inputting the command. The command should be specified exactly as you would run it in a shell environment. 3. DbtCoreOperation Limitations: Prefect executes
DbtCoreOperation
commands as shell operations, so double-check if there are specific constraints or additional settings required for your operation. 4. Use
ShellOperation
as Alternative
: If your operation isn't strictly tied to dbt, or if you're testing, consider using
prefect_shell.ShellOperation
, which may offer more flexibility for running custom shell commands. For more detailed information and potential updates regarding this component, you can consult the Prefect dbt integration documentation here. Ah, if only commands could explain themselves like Marvin would, we wouldn't have to guess where they went astray! But hang in there; verifying these steps should get you closer to a solution.