How to make BasicAuthentication in SolrJ - CloudSolrClient? - solr

Question

I am using Solr 7.5 Server and I had used External Zookeeper.When I browse using the Solr Admin UI It ask authentication to me.
For Java Client I had used the below Code
BasicAuthSolrClientCache bs = new BasicAuthSolrClientCache("solr", "SolrRocks");
CloudSolrClient solrCloudClient = bs.getCloudSolrClient(zkHost);
solrCloudClient.setDefaultCollection("sample");
SolrInputDocument doc = new SolrInputDocument();
doc.addField("cat", "book");
doc.addField("id", "book-1");
doc.addField("name", "The Legend of the Hobbit part 1");
solrCloudClient.add(doc);
solrCloudClient.commit();
solrCloudClient.close();
BasicAuthSolrClientCache.java
public class BasicAuthSolrClientCache extends SolrClientCache {
private static final Logger log =
LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
private final Map<String, SolrClient> solrClients = new HashMap<>();
private final String username;
private final String password;
public BasicAuthSolrClientCache(String username, String password) {
this.username = username;
this.password = password;
}
#Override
public synchronized CloudSolrClient getCloudSolrClient(String zkHost) {
CloudSolrClient client;
if (solrClients.containsKey(zkHost)) {
client = (CloudSolrClient) solrClients.get(zkHost);
} else {
client = new CloudSolrClient.Builder()
.withZkHost(zkHost)
.withHttpClient(getHttpClient())
.build();
client.connect();
solrClients.put(zkHost, client);
}
return client;
}
#Override
public synchronized HttpSolrClient getHttpSolrClient(String host) {
HttpSolrClient client;
if (solrClients.containsKey(host)) {
client = (HttpSolrClient) solrClients.get(host);
} else {
client = new HttpSolrClient.Builder(host)
.withHttpClient(getHttpClient())
.build();
solrClients.put(host, client);
}
return client;
}
#Override
public synchronized void close() {
for(Map.Entry<String, SolrClient> entry : solrClients.entrySet()) {
try {
entry.getValue().close();
} catch (IOException e) {
log.error("Error closing SolrClient for " + entry.getKey(), e);
}
}
solrClients.clear();
}
private HttpClient getHttpClient() {
CredentialsProvider provider = new BasicCredentialsProvider();
UsernamePasswordCredentials credentials = new
UsernamePasswordCredentials(this.username, this.password);
provider.setCredentials(AuthScope.ANY, credentials);
return
HttpClientBuilder.create().setDefaultCredentialsProvider(provider).
build();
}
}
But it give the exception like the below,
Exception in thread "main" org.apache.solr.client.solrj.impl.CloudSolrClient$RouteException: IOException occured when talking to server at: http://192.168.0.104:8983/solr/gettingstarted_shard2_replica1 at
How to authenticate SolrCloud using SolrJ

Answer 1

I found a easy way to do this.
You add a request interceptor like this so you do not have to worry about creating a properly configured HttpClient instance yourself. This will just add the interceptor to the default HttpClient that Solrj creates.
org.apache.solr.client.solrj.impl.HttpClientUtil.addRequestInterceptor(new SolrPreemptiveAuthInterceptor());
The RequestInterceptor looks like this:
public class SolrPreemptiveAuthInterceptor implements HttpRequestInterceptor {
final static Logger log = LoggerFactory.getLogger(SolrPreemptiveAuthInterceptor.class);
#Override
public void process(HttpRequest request, HttpContext context) throws HttpException, IOException {
AuthState authState = (AuthState) context.getAttribute(HttpClientContext.TARGET_AUTH_STATE);
// If no auth scheme available yet, try to initialize it preemptively
if (authState.getAuthScheme() == null) {
log.info("No AuthState: set Basic Auth");
HttpHost targetHost = (HttpHost) context.getAttribute(HttpCoreContext.HTTP_TARGET_HOST);
AuthScope authScope = new AuthScope(targetHost.getHostName(), targetHost.getPort());
CredentialsProvider credsProvider = (CredentialsProvider) context.getAttribute(HttpClientContext.CREDS_PROVIDER);
Credentials creds = credsProvider.getCredentials(authScope);
if(creds == null){
log.info("No Basic Auth credentials: add them");
creds = getCredentials(authScope);
}
authState.update(new BasicScheme(), creds);
}
}
private Credentials getCredentials(AuthScope authScope) {
String user = "";
String password = "";
UsernamePasswordCredentials creds = new UsernamePasswordCredentials(user, password);
CredentialsProvider credsProvider = new BasicCredentialsProvider();
credsProvider.setCredentials(authScope, creds);
log.info("Creating Basic Auth credentials for user {}", user);
return credsProvider.getCredentials(authScope);
}
}

Answer 2

You can also use UpdateRequest for indexing requests to do a basic authentication via SolrJ:
UpdateRequest ur = new UpdateRequest();
ur.add(doc);
ur.setBasicAuthCredentials("YOU USER NAME", "USER PASSWORD");
ur.setCommitWithin(COMMIT_WITHIN_INTERVAL);
ur.process(cloudSolrClient);