writerIdentity property

Output only. An IAM identity—a service account or group—under which Cloud Logging writes the exported log entries to the sink's destination. This field is either set by specifying custom_writer_identity or set automatically by sinks.create and sinks.update based on the value of unique_writer_identity in those methods.

Until you grant this identity write-access to the destination, log entry exports from this sink will fail. For more information, see Granting Access for a Resource. Consult the destination service's documentation to determine the appropriate IAM roles to assign to the identity.

Sinks that have a destination that is a log bucket in the same project as the sink cannot have a writer_identity and no additional permissions are required.