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Exceptions

The Task Queue service is currently released as an experimental feature. This means the API and behavior of the service may change in ways that are not compatible with earlier releases, even for minor releases of the runtime environments. Please try out this feature and let us know what you think! (more info)

The google.appengine.api.labs.taskqueue package provides the following exception classes:

exception Error

This is the base for all exceptions in this package.

exception UnknownQueueError(Error)

The queue specified is unknown.

exception TransientError(Error)

There was a transient error while accessing the queue. Please try again later.

exception InternalError(Error)

There was an internal error while accessing this queue. If this problem continues, please contact the App Engine team through our support forum with a description of your problem.

exception InvalidTaskError(Error)

The task's parameters, headers, or method is invalid.

exception InvalidTaskNameError(InvalidTaskError)

The task's name is invalid.

exception TaskTooLargeError(InvalidTaskError)

The task is too large with its headers and payload.

exception TaskAlreadyExistsError(InvalidTaskError)

Task already exists. It has not yet run.

exception TombstonedTaskError(InvalidTaskError)

Task has been tombstoned.

exception InvalidUrlError(InvalidTaskError)

The task's relative URL is invalid.

exception BadTaskStateError(Error)

The task is in the wrong state for the requested operation.

exception InvalidQueueError(Error)

The Queue's configuration is invalid.

exception InvalidQueueNameError(InvalidQueueError)

The Queue's name is invalid.

exception PermissionDeniedError(Error)

The requested operation is not allowed for this app.