Unable to access Google Cloud Pub/Sub component using Java API (System is hanging forever)

[Tridib Bolar]

I was successfully able to publish message into Pub/Sub topic till yesterday. But from today morning code is getting hanged forever during publishing. My problem is same as describe here. Then I have tried to create a topic using Java API as describe in the code snippet below

TopicName topic = TopicName.create(projectId, topicId);

try {
  TopicAdminClient topicAdminClient = TopicAdminClient.create();
  topicAdminClient.createTopic(topic); //HANG FOREVER
}catch(Exception e){
  e.printStackTrace();
} 

The code is hanging again at topicAdminClient.createTopic.

I am using com.google.pubsub.v1 package for GCP Pub/Sub along with com.google.cloud.pubsub.v1.TopicAdminClient. I have tried with default authentication credential as well as setting GOOGLE_APPLICATION_CREDENTIAL with Service Account Key. I am not sure where I am doing wrong. Can anyone help me to resolve this issue?

My code to publish message is as below

FileInputStream fis = new FileInputStream(new File("JSON file path"));
ApiFuture<String> messageId = publishMessage(publisher, 
ByteString.copyFrom(IOUtils.toByteArray(fis)));

where publishMessage is defined as below

private static ApiFuture<String> publishMessage(Publisher publisher, ByteString message)
            throws Exception {
    // convert message to bytes
    PubsubMessage pubsubMessage = 
    PubsubMessage.newBuilder().setData(message).build();
    return publisher.publish(pubsubMessage);
}

Additional Info: I have tried to execute datastore Java api and it is executing seamlessly. Maybe the problem is only with Pubsub I guess.

[Alex Mordkovich]

Hi Tridib,

Is it only the Java client library that is having issues talking to Pub/Sub? Are you able to 'ping pubsub.googleapis.com' ? Could you provide any logs from the code making the requests? Are there any errors?

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