对该 API 的多次调用会返回长时间运行的操作。这些代码可跟踪 也就是在较长时间内执行的作业， 但并不希望阻止 RPC。
OperationFuture 类
与 LRO 交互的最明显方法是
OperationFuture 类。如果您使用此方法，请确保服务客户端不会被销毁。
不推荐：
private void doSomething() {
OperationFuture<Empty, Empty> future = startLongRunningOperation(jobName);
future.get();
}
private OperationFuture<Empty, Empty> startLongRunningOperation(String jobToStart)
throws UnsupportedEncodingException {
try (OfflineUserDataJobServiceClient offlineUserDataJobServiceClient =
googleAdsClient.getLatestVersion().createOfflineUserDataJobServiceClient()) {
// Issues an asynchronous request to run the offline user data job for executing
// all added operations.
return offlineUserDataJobServiceClient.runOfflineUserDataJobAsync(jobToStart);
}
}
推荐：
private void doSomethingElse() {
try (OfflineUserDataJobServiceClient offlineUserDataJobServiceClient =
googleAdsClient.getLatestVersion().createOfflineUserDataJobServiceClient()) {
OperationFuture<Empty, Empty> future = startLongRunningOperation(offlineUserDataJobServiceClient, jobName);
future.get();
}
}
private OperationFuture<Empty, Empty> startLongRunningOperation(String jobToStart)
throws UnsupportedEncodingException {
offlineUserDataJobServiceClient.runOfflineUserDataJobAsync(jobToStart);
}
请注意，OperationFuture 类仅在
OfflineUserDataJobServiceClient在范围内。