backend-tasks: allow tasks to run more frequently than the default work check interval

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

.changeset/lovely-terms-search.md

@@ -0,0 +1,5 @@
+---
+'@backstage/backend-tasks': patch
+---
+
+Allow tasks to run more often that the default work check interval, which is 5 seconds.

packages/backend-tasks/src/tasks/TaskWorker.ts

@@ -51,6 +51,10 @@ export class TaskWorker {
       `Task worker starting: ${this.taskId}, ${JSON.stringify(settings)}`,
     );
 
+    const cadence = Duration.fromISO(settings.cadence);
+    const workCheckFrequency =
+      cadence < this.workCheckFrequency ? cadence : this.workCheckFrequency;
+
     let attemptNum = 1;
     (async () => {
       for (;;) {
@@ -69,7 +73,7 @@ export class TaskWorker {
               break;
             }
 
-            await sleep(this.workCheckFrequency, options?.signal);
+            await sleep(workCheckFrequency, options?.signal);
           }
 
           this.logger.info(`Task worker finished: ${this.taskId}`);