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After dragging this unit into the Flow canvas, double-click it to access its configuration options. The following table describes the configuration options of this unit:
Tab | Field | Description |
|---|---|---|
General | Name | Enter a name for the unit. It must start with a letter, and cannot contain spaces. Only letters, numbers, and underscores are allowed. |
Description | Enter a description detailing the scope of the unit. | |
Key field(s) | Enter the name of the input event field(s) containing key(s). | |
Size | The number of events in a window. Must be greater than 1. | |
Purge size | The number of events to purge from the window when it is considered complete. If it's equal to "size", a tumbling window is used. If it's smaller, a sliding window is used. | |
Key(s) field | Enter a name for the output event field containing key(s). | |
Window field | Enter a name for the output event field containing the window list. | |
Size field | Enter a name for the output event field containing the window size. |
Input ports
Port | Description |
|---|---|
in | All events enter through this port. |
Output ports
Port | Description |
|---|---|
out | Outputs events properly stored. |
error | Signals when an error occurs. Outputs input events enriched with standard error fields. |
Example
In this example, we wish to accumulate five 404 status codes and send them via email when the threshold has been met to alert of the error.
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