[jira] [Created] (AIRFLOW-2361) Allow GoogleCloudStorageToGoogleCloudStorageOperator to store list of copied files to XCom

["Berislav Lopac (JIRA)" <ji...@apache.org>]

Berislav Lopac created AIRFLOW-2361:
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             Summary: Allow GoogleCloudStorageToGoogleCloudStorageOperator to store list of copied files to XCom
                 Key: AIRFLOW-2361
                 URL: https://issues.apache.org/jira/browse/AIRFLOW-2361
             Project: Apache Airflow
          Issue Type: Improvement
            Reporter: Berislav Lopac
            Assignee: Berislav Lopac


When {{GoogleCloudStorageToGoogleCloudStorageOperator}} is used with a wildcard, it can copy more than one file. It would be useful if there would exist a mechanism to store the list of copied files as XCom so it can be used by other tasks downstream.

Proposed solution: Add a {{xcom_push}} flag argument to the constructor; if {{True}}, the {{execute }}method returns a report on copied files. The report is a dict of following structure:
{code:java}
{
    "source_bucket": "source-bucket-name",
    "destination_bucket": "destination-bucket-name",
    "copied_files": [
        ["original/file/path.ext", "target/prefix/original/file/path.ext"],
        ...
    ]
}{code}



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