Documentation
¶
Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
This section is empty.
Types ¶
type InstanceOperation ¶
type InstanceOperation struct {
// contains filtered or unexported fields
}
InstanceOperation operation locking.
func Create ¶
Create creates a new operation lock for an Instance if one does not already exist and returns it. The lock will be released after 30s or when Done() is called, which ever occurs first. If reusable is set as true then future lock attempts can specify the reuse argument as true which will then trigger a reset of the 30s timeout on the existing lock and return it.
func CreateWaitGet ¶
func CreateWaitGet(instanceID int, action string, altActions []string, reusable bool, reuse bool) (bool, *InstanceOperation, error)
CreateWaitGet is a weird function which does what we happen to want most of the time.
If the instance has an operation of the same type and it's not reusable or the caller doesn't want to reuse it, the function will wait and indicate that it did so.
If the instance has an operation of one of the alternate types, then the operation is returned to the user.
If the instance doesn't have an operation, has an operation of a different type that is not in the alternate list or has the right type and is being reused, then this behaves as a Create call.
func Get ¶
func Get(instanceID int) *InstanceOperation
Get retrieves an existing lock or returns nil if no lock exists.
func (InstanceOperation) Action ¶
func (op InstanceOperation) Action() string
Action returns operation's action.
func (*InstanceOperation) Done ¶
func (op *InstanceOperation) Done(err error)
Done indicates the operation has finished.
func (*InstanceOperation) Reset ¶
func (op *InstanceOperation) Reset() error
Reset resets the operation timeout.
func (*InstanceOperation) Wait ¶
func (op *InstanceOperation) Wait() error
Wait waits for an operation to finish.
Source Files