How do I pass a value from a sensor to an asset job?

To pass a value from a sensor to an asset job in Dagster, you can use the

RunRequest

object within the sensor's evaluation function to provide a

run_config

that specifies the configuration for the job. The

run_config

can include parameters that the job or its ops can consume. Here is an example from the documentation that demonstrates how to generate a

RunRequest

for every materialization for the asset key `my_table`:

python from dagster import (     AssetKey,     EventLogEntry,     RunConfig,     SensorEvaluationContext,     asset_sensor, )  @asset_sensor(asset_key=AssetKey("my_table"), job=my_job) def my_asset_sensor(context: SensorEvaluationContext, asset_event: EventLogEntry):     assert asset_event.dagster_event and asset_event.dagster_event.asset_key     yield RunRequest(         run_key=context.cursor,         run_config=RunConfig(             ops={                 "read_materialization": {                     "config": {                         "asset_key": list(asset_event.dagster_event.asset_key.path)                     }                 }             }         ),     )

In this example, the

run_config

is provided as a parameter to

RunRequest

, and it includes a configuration for an op named

read_materialization

. The configuration for this op includes the

asset_key

that was part of the materialization event. When the sensor triggers and the job runs, the job will use the provided

run_config

to configure its ops accordingly. This allows you to pass values from the sensor to the job, and subsequently to the ops within the job. Remember to replace

"read_materialization"

with the actual name of the op in your job that needs to receive the configuration, and ensure that the configuration structure matches what your job expects.