Function _execute

fdbclient/DatabaseBackupAgent.actor.cpp:1694–1718

	static constexpr uint32_t version = 1;

	ACTOR static Future<Void> _execute(Database cx,
	                                   Reference<TaskBucket> taskBucket,
	                                   Reference<FutureBucket> futureBucket,
	                                   Reference<Task> task) {
		state DatabaseBackupAgent srcDrAgent(taskBucket->src);
		state Reference<ReadYourWritesTransaction> tr(new ReadYourWritesTransaction(cx));
		state Key tagNameKey;

		loop {
			try {
				tr->setOption(FDBTransactionOptions::ACCESS_SYSTEM_KEYS);
				tr->setOption(FDBTransactionOptions::LOCK_AWARE);
				Key tagPath = srcDrAgent.states.get(task->params[DatabaseBackupAgent::keyConfigLogUid])
				                  .pack(BackupAgentBase::keyConfigBackupTag);
				Optional<Key> tagName = wait(tr->get(tagPath));
				if (!tagName.present()) {
					return Void();
				}

				tagNameKey = tagName.get();
				break;
			} catch (Error& e) {
				wait(tr->onError(e));
			}
		}

		TraceEvent("DBA_AbortOldBackup").detail("TagName", tagNameKey.printable());
		wait(srcDrAgent.abortBackup(cx, tagNameKey, PartialBackup::False, AbortOldBackup::True));