Lior Gefen
03/04/2024, 9:36 AMScout
03/04/2024, 9:37 AMpython
@op
def my_op(context, input_string: str):
<http://context.log.info|context.log.info>(f"input string: {input_string}")
@job
def my_job():
my_op()
my_job.execute_in_process(
run_config={"ops": {"my_op": {"inputs": {"input_string": {"value": "marmot"}}}}}
)
In this example, my_op
is an op that takes a string input. When executing the job my_job
, you provide the input value for input_string
through the run_config
parameter of the execute_in_process
method.
If you're still encountering errors, it's important to ensure that the structure of your run_config
matches the expected input structure of your op. If you're using a custom type, you may need to define a DagsterTypeLoader
to specify how to load that input via run config.
If you continue to face issues, please provide more details about your code and the specific error message you're receiving, and I can help you debug further. Clearer error message when passing Pytho... button Graphs with Inputs button Please help me with ops parameters and c... button How to use AssetCheck within Op of Graph... button Thank you for your feedback!Lior Gefen
03/04/2024, 9:38 AMScout
03/04/2024, 9:39 AMgraph_asset
in Dagster, you define a graph of ops that collectively produce an asset. If you have multiple ops within a graph_asset
and you want to provide input arguments to those ops, you should define the inputs at the level of the individual ops and then wire them together within the graph_asset
. The inputs to the ops within a graph_asset
are typically the outputs of other ops or the inputs to the graph_asset
itself. Here's an example based on the documentation: python from dagster import op, graph_asset @op def process_data(input_str: str): # Your processing logic here return f"Processed {input_str}" @op def another_op(processed_data: str): # Further processing or computation return f"Further processed {processed_data}" @graph_asset def my_graph_asset(input_str: str): processed = process_data(input_str) result = another_op(processed) return result
In this example, process_data
and another_op
are ops that take string inputs. The my_graph_asset
is a graph_asset
that takes a string input and wires the ops together. The input to my_graph_asset
is passed to process_data
, and the output of process_data
is passed to another_op
. When you want to execute this graph_asset
, you would provide the input argument for input_str
through the run config, similar to how you would for a single op. Here's an example of how you might execute this graph_asset
with a specific input: python result = my_graph_asset.execute_in_process( run_config={"ops": {"my_graph_asset": {"inputs": {"input_str": "example string"}}}} )
If you're still encountering issues, please ensure that the inputs and outputs are correctly defined and that the run config matches the expected structure. If you need further assistance, please provide more details about the specific error message and the code you're working with.Lior Gefen
03/04/2024, 9:50 AMScout
03/04/2024, 9:50 AM@graph_asset
is used to define an asset, and assets do not have an execute_in_process
method. Instead, assets are materialized by including them in a job and executing that job.
To provide input arguments to the ops within a graph_asset
, you would typically define the inputs at the level of the individual ops and then wire them together within the graph_asset
. However, if you need to provide inputs from outside the graph_asset
, you would do so when you define a job that includes the asset.
Here's an example of how you might define a job that includes your graph_asset
and how to provide inputs to it:
python
from dagster import asset, define_asset_job
@asset
def my_asset(input_str: str):
# Your processing logic here
return f"Processed {input_str}"
# Define a job that includes the asset
my_job = define_asset_job(
name="my_job",
selection=[my_asset],
input_values={"input_str": "example string"}
)
# Execute the job
result = my_job.execute_in_process()
In this example, my_asset
is an asset that takes a string input. The my_job
is a job that includes my_asset
and specifies the input value for input_str
using the input_values
parameter.
When you execute the job using execute_in_process
, the input values provided in the job definition are used to materialize the assets.
If you have a more complex scenario where your asset is defined by a graph_asset
that composes multiple ops, you would still include that graph_asset
in a job and provide the necessary inputs when defining the job.
If you need further clarification or assistance, please provide more details about your specific use case, including the structure of your graph_asset
and how you are trying to materialize it. 1.4.5
raises an error when contexts ar... button AssetsDefinition.from_graph is missing n... button How to provide configuration to the Op i... button asset definitions that are computed with... button Thank you for your feedback!Lior Gefen
03/04/2024, 9:53 AMScout
03/04/2024, 9:53 AMresult
in the example provided is the return value from the execute_in_process
method, which is an instance of JobExecutionResult
. This object contains information about the execution of the job, such as whether it succeeded, the events that occurred during execution, and the outputs produced.
Defining a job using define_asset_job
does not automatically cause it to run each time the code location is loaded. The job will only run when you explicitly execute it, either through a script using execute_in_process
, through the Dagster CLI, or through the Dagit UI.
In Dagster, a code location is a collection of definitions (such as assets, jobs, resources, schedules, and sensors) that are loadable and accessible by Dagster's tools. The code location itself does not dictate when jobs run; it simply makes the definitions available for execution.
To execute a job, you would typically use one of the following methods:
1. Dagit UI: You can trigger job execution manually through the Dagit UI by selecting the job and clicking on the "Launchpad" to configure and launch a run.
2. Dagster CLI: You can use the Dagster command-line interface to execute a job. For example, you can use the dagster job execute
command to run a job defined in your code location.
3. Programmatic Execution: You can execute a job programmatically using the execute_in_process
method, as shown in the example. This is often used for testing or running jobs from within a Python script.
The job execution is an explicit action, and the job will not run automatically upon loading the code location unless you have set up schedules or sensors that trigger the job based on certain conditions or time intervals. These schedules or sensors would need to be defined and enabled for the job to run automatically. runs executed from the CLI don't show up... button Add a way to reload definitions from wit... button Code server taking a long time to load i... button How to see results in the UI for runs th... button Thank you for your feedback!Lior Gefen
03/04/2024, 9:57 AMScout
03/04/2024, 9:57 AMgraph_asset
that calls several ops with some of those ops depending on a str
parameter, you would define the graph_asset
with the necessary inputs and then provide the values for those inputs when you materialize the asset through a job.
Here's a step-by-step guide on how to do this:
1. Define your ops, making sure to specify any inputs they require:
python
from dagster import op
@op
def op_with_input(my_input: str):
# Your logic here
pass
@op
def another_op():
# Your logic here
pass
2. Define your graph_asset
and wire up the ops, passing the necessary inputs:
python
from dagster import graph_asset
@graph_asset
def my_graph_asset(my_input: str):
# Pass the input to the op that requires it
op_with_input(my_input)
# Call other ops that do not require the input
another_op()
3. When you want to materialize this asset, you would include it in a job and provide the input values. You can use define_asset_job
to create a job that includes your `graph_asset`:
python
from dagster import define_asset_job
# Define a job that includes the asset and provides the input values
my_job = define_asset_job(
name="my_job",
selection=[my_graph_asset],
input_values={"my_input": "the string value"}
)
4. Materialize the asset by executing the job:
python
# Execute the job to materialize the asset
result = my_job.execute_in_process()
In this setup, the job will not run each time the code location is loaded. It will only run when you explicitly call execute_in_process
or trigger the job through Dagit or the Dagster CLI.
By using input_values
when defining the job, you can provide the necessary string parameters to the ops within your graph_asset
. This allows you to pass parameters to ops without having to execute the job upon loading the code location. The job execution is an explicit action that you control. executor_def argument to define_asset_jo... button How to execute a graph definition? button Allow Graph-backed assets
to run in a ... button Dagster Docs button Thank you for your feedback!Lior Gefen
03/04/2024, 10:19 AMScout
03/04/2024, 10:19 AMdefine_asset_job
does not have an input_values
parameter. Instead, you should define the inputs to your assets using the ins
parameter on the @asset
decorator to specify the inputs that your asset requires. Here's how you can define a graph_asset
that includes several assets, some of which depend on a str
parameter: 1. Define your assets using the @asset
decorator and specify any inputs using the ins
parameter: python from dagster import asset, AssetIn @asset def asset_with_input(input_str: str): # Your logic here that uses input_str pass @asset def another_asset(): # Your logic here that does not require input_str pass
2. Define a graph_asset
that composes these assets: python from dagster import graph_asset @graph_asset def my_graph_asset(): # Wire up your assets here result = asset_with_input() another_asset() return result
3. When you want to materialize the assets defined in your graph_asset
, you would include them in a job. You can use define_asset_job
to create a job that includes your `graph_asset`: python from dagster import define_asset_job # Define a job that includes the assets my_job = define_asset_job( name="my_job", selection=[my_graph_asset], )
4. To provide the input values for the assets when executing the job, you would use the run_config
parameter: python # Execute the job to materialize the assets, providing the necessary input values result = my_job.execute_in_process( run_config={ "ops": { "asset_with_input": { "inputs": { "input_str": "the string value" } } } } )
In this example, asset_with_input
is the name of the asset that requires the input_str
parameter. The run_config
is used to provide the value for this input when the job is executed. This approach allows you to define assets that depend on input parameters and to provide those parameters at execution time without the job running automatically when the code location is loaded. The job will only run when you explicitly execute it.Lior Gefen
03/04/2024, 10:22 AMScout
03/04/2024, 10:22 AMgraph_asset
with assets that depend on a string parameter, and you want to be able to schedule this job without executing it immediately. To achieve this, you can define your assets and graph_asset
as before, but when it comes to providing the string parameter, you will do so through the job's run_config
when you set up the schedule. Here's how you can do it: 1. Define your assets using the @asset
decorator: python from dagster import asset @asset def asset_with_input(input_str: str): # Your logic here that uses input_str pass @asset def another_asset(): # Your logic here that does not require input_str pass
2. Define a graph_asset
that composes these assets: python from dagster import graph_asset @graph_asset def my_graph_asset(): # Wire up your assets here result = asset_with_input() another_asset() return result
3. Define a job that includes your `graph_asset`: python from dagster import define_asset_job # Define a job that includes the assets my_job = define_asset_job( name="my_job", selection=[my_graph_asset], )
4. Set up a schedule for the job. When defining the schedule, you will provide the run_config
that includes the string parameter for the asset: python from dagster import ScheduleDefinition my_schedule = ScheduleDefinition( job=my_job, cron_schedule="0 * * * *", # Every hour, as an example run_config={ "ops": { "asset_with_input": { "inputs": { "input_str": "the string value" } } } } )
In this setup, the run_config
provided in the ScheduleDefinition
will be used whenever the schedule triggers a run of the job. The job will not execute immediately; it will only run according to the schedule you define. This way, you can define a job with a graph_asset
that includes assets with parameters, and you can schedule the job to run at specific intervals with the necessary parameters provided in the schedule's run_config
.Lior Gefen
03/04/2024, 10:22 AMScout
03/04/2024, 10:22 AMgraph_asset
that calls several ops, and some of those ops depend on a str
parameter, you can define the graph_asset
with the necessary inputs and then provide the values for those inputs when you materialize the asset through a job.
Here's an example of how you can define a graph_asset
with ops that depend on inputs:
1. Define your ops using the @op
decorator:
python
from dagster import op
@op
def my_op(input_str: str):
# Your logic here that uses input_str
pass
@op
def another_op():
# Your logic here that does not require input_str
pass
2. Define a graph_asset
that composes these ops and specify any inputs using the ins
parameter:
python
from dagster import graph_asset, AssetIn
@graph_asset(ins={"input_str": AssetIn()})
def my_graph_asset(input_str):
# Wire up your ops here
my_op(input_str)
another_op()
3. When you want to materialize the assets defined in your graph_asset
, you would include them in a job. You can use define_asset_job
to create a job that includes your `graph_asset`:
python
from dagster import define_asset_job
# Define a job that includes the graph_asset
my_job = define_asset_job(
name="my_job",
selection=[my_graph_asset],
)
4. To provide the input values for the ops when executing the job, you would use the run_config
parameter:
python
# Execute the job to materialize the assets, providing the necessary input values
result = my_job.execute_in_process(
run_config={
"solids": {
"my_graph_asset": {
"inputs": {
"input_str": "the string value"
}
}
}
}
)
In this example, my_graph_asset
is the name of the graph_asset
that includes the ops, and input_str
is the input parameter that you want to provide to the ops within the graph_asset
. The run_config
is used to provide the value for this input when the job is executed.
This approach allows you to define a graph_asset
with ops that depend on input parameters and to provide those parameters at execution time. The job will only run when you explicitly execute it, and it will not run automatically when the code location is loaded. assets built from ops and graphs don't g... button Allow users to toggle between assets and... button Assets vs Ops button Wonky op graph displays when creating As... button Thank you for your feedback!Lior Gefen
03/04/2024, 10:37 AMScout
03/04/2024, 10:37 AMgraph
in Dagster, which can then be used to create assets.
Here's how you can define a graph
with ops that depend on inputs:
1. Define your ops using the @op
decorator:
python
from dagster import op
@op
def my_op(input_str: str):
# Your logic here that uses input_str
pass
@op
def another_op():
# Your logic here that does not require input_str
pass
2. Define a graph
that composes these ops:
python
from dagster import graph
@graph
def my_graph(input_str: str):
# Wire up your ops here
my_op(input_str)
another_op()
3. Create a job from the graph:
python
my_job = my_graph.to_job()
4. When you want to execute the job, you can provide the input values for the ops using the `run_config`:
python
result = my_job.execute_in_process(
run_config={
"ops": {
"my_op": {
"inputs": {
"input_str": "the string value"
}
}
}
}
)
In this example, my_op
is the name of the op that requires the input_str
parameter. The run_config
is used to provide the value for this input when the job is executed.
This approach allows you to define a graph with ops that depend on input parameters and to provide those parameters at execution time. The job will only run when you explicitly execute it, and it will not run automatically when the code location is loaded.
If you want to create assets from this graph, you can define assets that depend on the outputs of these ops and include them in the job definition. The inputs to the ops will still be provided through the run_config
when executing the job. Search (CTRL+K) does not work with --pat... button Zoom on double-click doesn't work for as... button dagster tells you to use "dagster dev -h... button System tags aren't populated on failed r... button Thank you for your feedback!Lior Gefen
03/04/2024, 10:39 AMScout
03/04/2024, 10:39 AM