[GitHub] [pulsar-client-node] hrsakai commented on issue #56: Add listener support for consumer

[GitBox]

hrsakai commented on issue #56: Add listener support for consumer
URL: https://github.com/apache/pulsar-client-node/pull/56#issuecomment-547724476
 
 
   I can receive only one message when `ack(message)` doesn’t be called.
   ```
   // Execute consumer
   $ node ./consumer_listener.js
   results.length: 1
   
   // Produce messages on another terminal
   $ pulsar-client produce -n 100 -m Hello persistent://public/ns/topic1
   ```
   
   consumer_listener.js
   ```
   .
   .
     const consumer = await client.subscribe({
       topic: 'persistent://public/ns/topic1',
       subscription: 'sub1',
       listener: (message, ack) => {
         const data = message.getData().toString();
         results.push(data);
         console.log(`results.length: ${results.length}`);
   //      ack(message);
         if (results.length === 10000) finish();
       },
     });
   .
   .
   ```

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