[GitHub] [pulsar] sleungtoast opened a new issue #4365: Authentication provider getAuthData called before initialization

[GitBox <gi...@apache.org>]

sleungtoast opened a new issue #4365: Authentication provider getAuthData called before initialization
URL: https://github.com/apache/pulsar/issues/4365
 
 
   **Describe the bug**
   When I wrote a custom authentication provider, I expected `.getAuthData()` to not be called before `.start()` was called. When I turned on TLS, it hit a codepath where that happened.
   
   **To Reproduce**
   Steps to reproduce the behavior:
   1. Add an Authentication provider that throws an exception if `start()` has not been called.
   2. Use a TLS broker url
   3. Create a consumer
   4. On consumer `build()`, the Authentication provider will throw the exception.
   
   **Expected behavior**
   Do not call `Authentication.getAuthData()` before `Authentication.start()` so the consumer starts up successfully.
   
   **Additional context**
   In a `PulsarClientImpl` constructor, a new `ConnectionPool` is created, then a new `PulsarChannelInitializer` is created, which has the following code that doesn't use my auth data anyway.
   ```
   if (conf.isUseTls()) {
       // Set client certificate if available
       AuthenticationDataProvider authData = conf.getAuthentication().getAuthData();
       if (authData.hasDataForTls()) {
           this.sslCtx = SecurityUtility.createNettySslContextForClient(conf.isTlsAllowInsecureConnection(),
                   conf.getTlsTrustCertsFilePath(), (X509Certificate[]) authData.getTlsCertificates(),
                   authData.getTlsPrivateKey());
       } else {
           this.sslCtx = SecurityUtility.createNettySslContextForClient(conf.isTlsAllowInsecureConnection(),
                   conf.getTlsTrustCertsFilePath());
       }
   } else {
       this.sslCtx = null;
   }
   ```

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