OnQueueEvent
Google Cloud Storage Connector generates an event when an asynchronous action queue becomes full, becomes empty, or the queue size passes certain thresholds. The OnQueueEvent
parameter specifies the name of the handler to use to handle these events.
- A
QueueFull
event occurs when the action queue becomes full. - A
QueueFilling
event occurs when the queue size exceeds the value of QueueFillingThreshold and the last event was aQueueEmpty
orQueueEmptying
event. - A
QueueEmptying
event occurs when the queue size falls below the value of QueueEmptyingThreshold and the last event was aQueueFull
orQueueFilling
event. - A
QueueEmpty
event occurs when the action queue becomes empty.
The name that you specify must represent a section in the configuration file that contains the LibraryName parameter and any other settings for the event handler. For example:
[ActionName] OnQueueEvent=MyHandler QueueFillingThreshold=0.7 QueueEmptyingThreshold=0.4 [MyHandler] LibraryName=LuaHandler LuaScript=./handle_queue_event.lua
In the example above, the Lua script might respond to the events by sending a notification to an administrator.
An event contains the following information:
queueEventType
|
The type of event, for example QueueFull or QueueFilling . |
maxQueueSize
|
The maximum size of the queue. |
queueSize
|
The current size of the queue (not present for QueueEmpty events). |
Type: | String |
Default: | |
Required: | No |
Configuration Section: |
ActionName
where ActionName is the name of an asynchronous action. |
Example: | OnQueueEvent=EventHandler
|
See Also: |