[SOLR-17300] Copy existing listeners on re-creation of Http2SolrClient

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 9.7
• Assignee: Sanjay Dutt
• Reporter: Sanjay Dutt
• Created: 20/May/24 08:01
• Updated: 05/Jun/24 12:41
• Resolved: 23/May/24 08:33

Description

For custom settings, such as timeouts, usually a Http2SolrClient is created using the existing HTTP client using below code.

Http2SolrClient.Builder(leaderBaseUrl)
            .withHttpClient(existingHttp2SolrClient)
            .withIdleTimeout(soTimeout, TimeUnit.MILLISECONDS)
            .withConnectionTimeout(connTimeout, TimeUnit.MILLISECONDS)
            .build();

If not specified, withHttpClient method would automatically copy over some of the older configuration automatically to the new Http2SolrClient

if (this.basicAuthAuthorizationStr == null) {
        this.basicAuthAuthorizationStr = http2SolrClient.basicAuthAuthorizationStr;
      }
      if (this.followRedirects == null) {
        this.followRedirects = http2SolrClient.httpClient.isFollowRedirects();
      }
      if (this.idleTimeoutMillis == null) {
        this.idleTimeoutMillis = http2SolrClient.idleTimeoutMillis;
      }
      if (this.requestWriter == null) {
        this.requestWriter = http2SolrClient.requestWriter;
      }
      if (this.requestTimeoutMillis == null) {
        this.requestTimeoutMillis = http2SolrClient.requestTimeoutMillis;
      }
      if (this.responseParser == null) {
        this.responseParser = http2SolrClient.parser;
      }
      if (this.urlParamNames == null) {
        this.urlParamNames = http2SolrClient.urlParamNames;
      }

Nonetheless there is one field that did not pass over yet – List of HttpListenerFactory. This list also includes the interceptor for Auth due to which re-created client were missing auth credentials and requests were failing.

Proposed Solution :-

Along with other properties, List of Listener Factory should also be copied over from old to new client using withHttpClient method.

if (this.listenerFactory == null) {
        this.listenerFactory = new ArrayList<HttpListenerFactory>();
        http2SolrClient.listenerFactory.forEach(this.listenerFactory::add);
      }

Issue Links

• links to: GitHub Pull Request #2467