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fun getXCom(key: String = XCOM_RETURN_KEY, dagId: String = details.ti.dagId, taskId: String, runId: String = details.ti.runId, mapIndex: Int? = null, includePriorDates: Boolean = false): Any?
Reads an XCom value pushed by another task.
The current Dag run's dagId and runId are used by default; override them only when reading across Dags or runs.
Return
The XCom value, or null if none was pushed.
Parameters
key
XCom key to read; defaults to XCOM_RETURN_KEY.
dag
Dag that owns the XCom; defaults to the current Dag.
task
Task that pushed the XCom.
run
Run that produced the XCom; defaults to the current run.
map
Map index of the source task instance.
include
If true, also search earlier Dag-run dates.
Throws
if the API call fails.
If map_index is set to null against a mapped task, the task's "collective result" is returned. Results from all mapped instances are aggregated into a list, ordered by the map index (ascending). For a non-mapped task, setting map_index to null is equivalent to -1.