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#ask-ai
Title
# ask-ai
b

Bennett Norman

03/08/2024, 9:06 PM
Is it possible to access dagster context within an asset_check?
s

Scout

03/08/2024, 9:06 PM
Yes, it is possible to access the Dagster context within an
asset_check
. When you define an
asset_check
, you can access the context by including it as a parameter in your check function. The context provides various runtime information and functionality, such as logging and accessing resources. Here's an example from the documentation that illustrates how to define an
asset_check
that uses the context:
Copy code
python
from dagster import asset, asset_check, AssetCheckResult

@asset
def my_asset():
    # Asset computation logic
    ...

@asset_check(asset=my_asset)
def my_asset_check(context):
    # You can use the context here for logging, accessing resources, etc.
    <http://context.log.info|context.log.info>("Running asset check.")
    # Check logic
    return AssetCheckResult(passed=True)
In this example, the
my_asset_check
function is an
asset_check
associated with the
my_asset
asset. The
context
parameter is used within the check function to perform logging. You can similarly use the context to access other runtime information and functionalities as needed. How to get the code location of a given ... button get code versions for a set of assets be... button Allow accessing the asset value loader f... button How to: access the DagsterInstance button Thank you for your feedback!
b

Bennett Norman

03/08/2024, 9:17 PM
Can I get the job_id via the context object?
@Scout Can I get the job_id via the context object?
s

Scout

03/08/2024, 9:18 PM
As of my knowledge cutoff date in early 2023, the context object within an
asset_check
does not directly provide a
job_id
. The
job_id
is typically associated with a specific run of a job, and
asset_check
functions are meant to validate assets rather than being tied to a specific job execution. However, if you are within the context of a running job (for example, within an op or a hook), you can access the
run_id
of the current job execution through the context object. The
run_id
is a unique identifier for each run of a job. Here's how you can access it:
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python @op def my_op(context):     run_id = context.run_id     <http://context.log.info|context.log.info>(f"The run ID for this job is: {run_id}")
In the above example,
context.run_id
retrieves the
run_id
for the current job execution within an op. If you need to access the
job_id
or other similar metadata from within an
asset_check
, you would typically need to pass that information to the check function through some other means, such as by including it in the asset's materialization metadata or by using resources that can provide such information. If there have been updates to Dagster after my knowledge cutoff date that allow for accessing
job_id
directly within an
asset_check
context, I would recommend checking the latest Dagster documentation or release notes for the most up-to-date information.
b

Bennett Norman

03/08/2024, 9:19 PM
@Scout could I get the job name from the context object?
s

Scout

03/08/2024, 9:19 PM
As of my knowledge cutoff date in early 2023, within the context of an
asset_check
, you do not have direct access to the job name because asset checks are designed to be independent of specific job runs. They are meant to validate the integrity of an asset rather than being tied to the execution context of a job. However, if you are within the context of a running job, such as within an op, you can access the job name through the context object. Here's an example of how you might access the job name within an op:
Copy code
python @op def my_op(context):     job_name = context.job_name     <http://context.log.info|context.log.info>(f"The job name is: {job_name}")
In this example,
context.job_name
would give you the name of the job that the op is a part of. For
asset_check
, since it is not directly associated with the execution of a job, the job name is not inherently part of the context. If you need to use the job name within an
asset_check
, you would have to pass it explicitly, perhaps as a resource or through some other mechanism that makes it available to your asset check function. Please check the latest Dagster documentation for any updates or changes to this behavior that may have occurred after my knowledge cutoff date.
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