backups: add stop_integrity_check route

src/backups.js

@@ -13,6 +13,7 @@ exports = module.exports = {
 
     clearTasks,
     startIntegrityCheck,
+    stopIntegrityCheck,
     setIntegrityResult,
 
     BACKUP_IDENTIFIER_BOX: 'box',
@@ -238,6 +239,15 @@ async function startIntegrityCheck(backup, auditSource) {
     return taskId;
 }
 
+async function stopIntegrityCheck(backup, auditSource) {
+    assert.strictEqual(typeof backup, 'object');
+    assert.strictEqual(typeof auditSource, 'object');
+
+    if (!backup.integrityCheckTaskId) throw new BoxError(BoxError.BAD_STATE, 'task is not active');
+
+    await tasks.stopTask(backup.integrityCheckTaskId);
+}
+
 async function clearTasks() {
     await database.query('UPDATE backups SET integrityCheckTaskId = NULL');
 }