Adding Basic authentication params to HttpSolrClient using invariantParams - solrj

Question

I am trying to write a SOLR client using SolrJ HttpSolrClient.
I have to use Basic Authentication.
The documentation for SolrJ HttpSolrClient says that there is:
protected ModifiableSolrParams invariantParams
and the description is:
Parameters that are added to every request regardless. This may be a place to add something like an authentication token.
Can someone who has used this before please tell me how to use the invariantParams for basic auth?
public class MySolrClient extends HttpSolrClient{
private String hostUrl;
private String userName;
private String password;
public CloudForgeProcurementSolrClient(final String hostUrl, final String userName, final String password) {
super(hostUrl);
this.hostUrl = hostUrl;
this.userName = userName;
this.password = password;
if (invariantParams == null) {
invariantParams = new ModifiableSolrParams();
}
// invariantParams.add(arg0, arg1);
}
}
What should be arg0 and arg1 be in my case.
Thanks in advance!

Answer 1

You can do something like
CredentialsProvider provider = new BasicCredentialsProvider();
UsernamePasswordCredentials credentials = new UsernamePasswordCredentials(
"myusername","mypassword");
provider.setCredentials(AuthScope.ANY, credentials);
HttpClient client = HttpClientBuilder.create().setDefaultCredentialsProvider(provider).build();
HttpSolrClient solrClient = new HttpSolrClient(solrCoreUrl, client);

Answer 2

you can use below code:
CredentialsProvider provider = new BasicCredentialsProvider();
UsernamePasswordCredentials credentials = new
UsernamePasswordCredentials(username,password);
provider.setCredentials(AuthScope.ANY, credentials);
HttpClient client = HttpClientBuilder.create().setDefaultCredentialsProvider(provider).build();
HttpSolrClient solrClient = new HttpSolrClient.Builder()
.withBaseSolrUrl(host)
.withHttpClient(client).build();