Hayden Luckenbach
02/14/2024, 9:00 PMScout
02/14/2024, 9:00 PMHayden Luckenbach
02/14/2024, 9:46 PMHayden Luckenbach
02/14/2024, 9:47 PMScout
02/14/2024, 9:47 PMAssetsDefinition.from_op
method. This is useful when you have an op that performs a computation and you want to represent the output of that computation as an asset. 3. Including ops in asset computations: If you have an op that needs to run before an asset is computed, you can include the op within the body of the asset computation. This way, the op's execution is part of the asset's computation graph. 4. Using resources: Resources can be used to manage external systems or services that are required by your assets. For example, if you have an op that sets up a computing cluster, you can define a resource that represents the cluster and make it available to the assets that require it. 5. Job composition: You can define a job that includes both assets and ops. The job orchestrates the execution of these components, ensuring that the ops run at the appropriate times in relation to the asset computations. Here's a simplified example of how you might define a graph-backed asset that includes an op: python from dagster import op, graph, Out, Output, graph_asset @op def prepare_data(): # Logic to prepare data return "data" @op def process_data(data): # Logic to process data return "processed_data" @graph def data_processing_graph(): data = prepare_data() processed_data = process_data(data) return processed_data @graph_asset def my_asset(): return data_processing_graph()
In this example, prepare_data
and process_data
are ops that are part of a graph data_processing_graph
. The my_asset
graph-backed asset uses this graph to compute its value. When you execute the job that includes my_asset
, Dagster will run the ops in the defined order as part of the asset computation. Remember to consult the documentation for more detailed examples and explanations on how to combine ops and assets in your specific use case.Hayden Luckenbach
02/14/2024, 10:16 PMScout
02/14/2024, 10:16 PMasset_group
decorator, ensuring that at least one asset in the group depends on the op's output. Here's a simplified example: python from dagster import op, asset, asset_group @op def my_op(): # Perform some computation or action return some_data @asset def my_asset(input_data): # Process the input data return processed_data # Define an asset group and include the asset that depends on the op my_asset_group = asset_group([my_asset]) # In your job definition, you would use the op and the asset group together @job def my_job(): data = my_op() my_asset(input_data=data)
In this example, my_asset
is an asset that depends on the output of my_op
. The my_asset_group
is an asset group that includes my_asset
. When defining the job my_job
, you explicitly pass the output of my_op
to my_asset
, creating a dependency between the op and the asset group. Please note that the exact implementation details may vary depending on the specific requirements of your workflow and the version of Dagster you are using. Always refer to the latest Dagster documentation for the most up-to-date guidance and best practices. If there have been updates to Dagster after my knowledge cutoff date that introduce new ways to create dependencies between ops and asset groups, please consult the latest documentation or community discussions for additional information.Hayden Luckenbach
02/15/2024, 3:46 PMScout
02/15/2024, 3:46 PM