GAE pubsub客户端无法发布

Question

我跟着GAE pub-sub客户端示例代码来实现发布消息。它工作了一天。

但它今天停止发布任何消息。我使用与https://cloud.google.com/pubsub/docs/publisher中的示例代码类似的pub / sub客户端代码。

如果我通过https://console.cloud.google.com发布有关该主题的消息，我的客户端可以毫无问题地收到消息。

发布代码有什么问题或我需要吗？

public static void publish(String message) throws Exception {
TopicName topicName = TopicName.of(projectId, topicId);


Publisher publisher = null;
List<ApiFuture<String>> messageIdFutures = new ArrayList<>();

try {
    publisher = Publisher.newBuilder(topicName).build();
    ByteString data = ByteString.copyFromUtf8(message);
    PubsubMessage pubsubMessage = 
    PubsubMessage.newBuilder().setData(data).build();
    ApiFuture<String> messageIdFuture = publisher.publish(pubsubMessage);
    messageIdFutures.add(messageIdFuture);
}finally {
    List<String> messageIds = ApiFutures.allAsList(messageIdFutures).get();
    for (String messageId : messageIds) {
        System.out.println("published with message ID: " + messageId);

    }
    if (publisher != null) {
        // When finished with the publisher, shutdown to free up resources.
        publisher.shutdown();
    }

}