OperationMetadata

The metadata for the long-running operation.

JSON representation 
{
  "createTime": string,
  "endTime": string,
  "target": string,
  "verb": string,
  "statusMessage": string,
  "requestedCancellation": boolean,
  "apiVersion": string
}
Fields
createTime

string (Timestamp format)

Output only. The time the operation was created.

Uses RFC 3339, where generated output will always be Z-normalized and use 0, 3, 6 or 9 fractional digits. Offsets other than "Z" are also accepted. Examples: "2014-10-02T15:01:23Z", "2014-10-02T15:01:23.045123456Z" or "2014-10-02T15:01:23+05:30".
endTime

string (Timestamp format)

Output only. The time the operation finished running.

Uses RFC 3339, where generated output will always be Z-normalized and use 0, 3, 6 or 9 fractional digits. Offsets other than "Z" are also accepted. Examples: "2014-10-02T15:01:23Z", "2014-10-02T15:01:23.045123456Z" or "2014-10-02T15:01:23+05:30".
target

string

Output only. The server-defined resource path for the target of the operation.
verb

string

Output only. The name of the verb that was executed by the operation.
statusMessage

string

Output only. The human-readable status of the operation, if any.
requestedCancellation

boolean

Output only. Identifies whether the user has requested that the operation be cancelled. If an operation was cancelled successfully, then the field google.longrunning.Operation.error contains the value google.rpc.Code.CANCELLED.
apiVersion

string

Output only. The API version that was used to start the operation.