# Storage Transfer API . transferOperations

## Instance Methods

Cancels a transfer. Use the transferOperations.get method to check if the cancellation succeeded or if the operation completed despite the `cancel` request. When you cancel an operation, the currently running transfer is interrupted. For recurring transfer jobs, the next instance of the transfer job will still run. For example, if your job is configured to run every day at 1pm and you cancel Monday's operation at 1:05pm, Monday's transfer will stop. However, a transfer job will still be attempted on Tuesday. This applies only to currently running operations. If an operation is not currently running, `cancel` does nothing. *Caution:* Canceling a transfer job can leave your data in an unknown state. We recommend that you restore the state at both the destination and the source after the `cancel` request completes so that your data is in a consistent state. When you cancel a job, the next job computes a delta of files and may repair any inconsistent state. For instance, if you run a job every day, and today's job found 10 new files and transferred five files before you canceled the job, tomorrow's transfer operation will compute a new delta with the five files that were not copied today plus any new files discovered tomorrow.

Close httplib2 connections.

Gets the latest state of a long-running operation. Clients can use this method to poll the operation result at intervals as recommended by the API service.

Lists transfer operations. Operations are ordered by their creation time in reverse chronological order.

Retrieves the next page of results.

Pauses a transfer operation.

Resumes a transfer operation that is paused.

### Method Details

`cancel(name, body=None, x__xgafv=None)`

    Cancels a transfer. Use the transferOperations.get method to check if the cancellation succeeded or if the operation completed despite the `cancel` request. When you cancel an operation, the currently running transfer is interrupted. For recurring transfer jobs, the next instance of the transfer job will still run. For example, if your job is configured to run every day at 1pm and you cancel Monday's operation at 1:05pm, Monday's transfer will stop. However, a transfer job will still be attempted on Tuesday. This applies only to currently running operations. If an operation is not currently running, `cancel` does nothing. *Caution:* Canceling a transfer job can leave your data in an unknown state. We recommend that you restore the state at both the destination and the source after the `cancel` request completes so that your data is in a consistent state. When you cancel a job, the next job computes a delta of files and may repair any inconsistent state. For instance, if you run a job every day, and today's job found 10 new files and transferred five files before you canceled the job, tomorrow's transfer operation will compute a new delta with the five files that were not copied today plus any new files discovered tomorrow.

    Args:
      name: string, The name of the operation resource to be cancelled. (required)
      body: object, The request body.
        The object takes the form of:

    { # The request message for Operations.CancelOperation.
    }

      x__xgafv: string, V1 error format.
        Allowed values
          1 - v1 error format
          2 - v2 error format

    Returns:
      An object of the form:

        { # A generic empty message that you can re-use to avoid defining duplicated empty messages in your APIs. A typical example is to use it as the request or the response type of an API method. For instance: service Foo { rpc Bar(google.protobuf.Empty) returns (google.protobuf.Empty); } The JSON representation for `Empty` is empty JSON object `{}`.
    }

`close()`

    Close httplib2 connections.

`get(name, x__xgafv=None)`

    Gets the latest state of a long-running operation. Clients can use this method to poll the operation result at intervals as recommended by the API service.

    Args:
      name: string, The name of the operation resource. (required)
      x__xgafv: string, V1 error format.
        Allowed values
          1 - v1 error format
          2 - v2 error format

    Returns:
      An object of the form:

        { # This resource represents a long-running operation that is the result of a network API call.
      "done": True or False, # If the value is `false`, it means the operation is still in progress. If `true`, the operation is completed, and either `error` or `response` is available.
      "error": { # The `Status` type defines a logical error model that is suitable for different programming environments, including REST APIs and RPC APIs. It is used by [gRPC](https://github.com/grpc). Each `Status` message contains three pieces of data: error code, error message, and error details. You can find out more about this error model and how to work with it in the [API Design Guide](https://cloud.google.com/apis/design/errors). # The error result of the operation in case of failure or cancellation.
        "code": 42, # The status code, which should be an enum value of google.rpc.Code.
        "details": [ # A list of messages that carry the error details. There is a common set of message types for APIs to use.
          {
            "a_key": "", # Properties of the object. Contains field @type with type URL.
          },
        ],
        "message": "A String", # A developer-facing error message, which should be in English. Any user-facing error message should be localized and sent in the google.rpc.Status.details field, or localized by the client.
      },
      "metadata": { # Represents the transfer operation object. To request a TransferOperation object, use transferOperations.get.
        "a_key": "", # Properties of the object. Contains field @type with type URL.
      },
      "name": "A String", # The server-assigned unique name. The format of `name` is `transferOperations/some/unique/name`.
      "response": { # The normal response of the operation in case of success. If the original method returns no data on success, such as `Delete`, the response is `google.protobuf.Empty`. If the original method is standard `Get`/`Create`/`Update`, the response should be the resource. For other methods, the response should have the type `XxxResponse`, where `Xxx` is the original method name. For example, if the original method name is `TakeSnapshot()`, the inferred response type is `TakeSnapshotResponse`.
        "a_key": "", # Properties of the object. Contains field @type with type URL.
      },
    }

`list(name, filter, pageSize=None, pageToken=None, x__xgafv=None)`

    Lists transfer operations. Operations are ordered by their creation time in reverse chronological order.

    Args:
      name: string, Not used. (required)
      filter: string, Required. A list of query parameters specified as JSON text in the form of: `{"projectId":"my_project_id", "jobNames":["jobid1","jobid2",...], "operationNames":["opid1","opid2",...], "transferStatuses":["status1","status2",...]}` Since `jobNames`, `operationNames`, and `transferStatuses` support multiple values, they must be specified with array notation. `projectId` is required. `jobNames`, `operationNames`, and `transferStatuses` are optional. The valid values for `transferStatuses` are case-insensitive: IN_PROGRESS, PAUSED, SUCCESS, FAILED, and ABORTED. (required)
      pageSize: integer, The list page size. The max allowed value is 256.
      pageToken: string, The list page token.
      x__xgafv: string, V1 error format.
        Allowed values
          1 - v1 error format
          2 - v2 error format

    Returns:
      An object of the form:

        { # The response message for Operations.ListOperations.
      "nextPageToken": "A String", # The standard List next-page token.
      "operations": [ # A list of operations that matches the specified filter in the request.
        { # This resource represents a long-running operation that is the result of a network API call.
          "done": True or False, # If the value is `false`, it means the operation is still in progress. If `true`, the operation is completed, and either `error` or `response` is available.
          "error": { # The `Status` type defines a logical error model that is suitable for different programming environments, including REST APIs and RPC APIs. It is used by [gRPC](https://github.com/grpc). Each `Status` message contains three pieces of data: error code, error message, and error details. You can find out more about this error model and how to work with it in the [API Design Guide](https://cloud.google.com/apis/design/errors). # The error result of the operation in case of failure or cancellation.
            "code": 42, # The status code, which should be an enum value of google.rpc.Code.
            "details": [ # A list of messages that carry the error details. There is a common set of message types for APIs to use.
              {
                "a_key": "", # Properties of the object. Contains field @type with type URL.
              },
            ],
            "message": "A String", # A developer-facing error message, which should be in English. Any user-facing error message should be localized and sent in the google.rpc.Status.details field, or localized by the client.
          },
          "metadata": { # Represents the transfer operation object. To request a TransferOperation object, use transferOperations.get.
            "a_key": "", # Properties of the object. Contains field @type with type URL.
          },
          "name": "A String", # The server-assigned unique name. The format of `name` is `transferOperations/some/unique/name`.
          "response": { # The normal response of the operation in case of success. If the original method returns no data on success, such as `Delete`, the response is `google.protobuf.Empty`. If the original method is standard `Get`/`Create`/`Update`, the response should be the resource. For other methods, the response should have the type `XxxResponse`, where `Xxx` is the original method name. For example, if the original method name is `TakeSnapshot()`, the inferred response type is `TakeSnapshotResponse`.
            "a_key": "", # Properties of the object. Contains field @type with type URL.
          },
        },
      ],
    }

`list_next(previous_request, previous_response)`

    Retrieves the next page of results.

    Args:
      previous_request: The request for the previous page. (required)
      previous_response: The response from the request for the previous page. (required)

    Returns:
      A request object that you can call 'execute()' on to request the next
      page. Returns None if there are no more items in the collection.

`pause(name, body=None, x__xgafv=None)`

    Pauses a transfer operation.

    Args:
      name: string, Required. The name of the transfer operation. (required)
      body: object, The request body.
        The object takes the form of:

    { # Request passed to PauseTransferOperation.
    }

      x__xgafv: string, V1 error format.
        Allowed values
          1 - v1 error format
          2 - v2 error format

    Returns:
      An object of the form:

        { # A generic empty message that you can re-use to avoid defining duplicated empty messages in your APIs. A typical example is to use it as the request or the response type of an API method. For instance: service Foo { rpc Bar(google.protobuf.Empty) returns (google.protobuf.Empty); } The JSON representation for `Empty` is empty JSON object `{}`.
    }

`resume(name, body=None, x__xgafv=None)`

    Resumes a transfer operation that is paused.

    Args:
      name: string, Required. The name of the transfer operation. (required)
      body: object, The request body.
        The object takes the form of:

    { # Request passed to ResumeTransferOperation.
    }

      x__xgafv: string, V1 error format.
        Allowed values
          1 - v1 error format
          2 - v2 error format

    Returns:
      An object of the form:

        { # A generic empty message that you can re-use to avoid defining duplicated empty messages in your APIs. A typical example is to use it as the request or the response type of an API method. For instance: service Foo { rpc Bar(google.protobuf.Empty) returns (google.protobuf.Empty); } The JSON representation for `Empty` is empty JSON object `{}`.
    }