Examples of LBHttpSolrServer

org.apache.solr.client.solrj.impl.LBHttpSolrServer
apache.org/solr/LBHttpSolrServer">wiki page.
It offers automatic failover when a server goes down and it detects when the server comes back up.
Load balancing is done using a simple roundrobin on the list of servers.
If a request to a server fails by an IOException due to a connection timeout or read timeout then the host is taken off the list of live servers and moved to a 'dead server list' and the request is resent to the next live server. This process is continued till it tries all the live servers. If atleast one server is alive, the request succeeds, andif not it fails.
```
 SolrServer lbHttpSolrServer = new LBHttpSolrServer("http://host1:8080/solr/","http://host2:8080/solr","http://host2:8080/solr"); //or if you wish to pass the HttpClient do as follows httpClient httpClient =  new HttpClient(); SolrServer lbHttpSolrServer = new LBHttpSolrServer(httpClient,"http://host1:8080/solr/","http://host2:8080/solr","http://host2:8080/solr"); 
```
This detects if a dead server comes alive automatically. The check is done in fixed intervals in a dedicated thread. This interval can be set using {@link #setAliveCheckInterval} , the default is set to one minute.
When to use this?
This can be used as a software load balancer when you do not wish to setup an external load balancer. The code is relatively new and the API is currently experimental. Alternatives to this code are to use a dedicated hardware load balancer or using Apache httpd with mod_proxy_balancer as a load balancer. See Load balancing on Wikipedia @since solr 1.4

Examples of org.apache.solr.client.solrj.impl.LBHttpSolrServer

    assertHttpSolrServerProperties(httpSolrServer, clone);
  }


  @Test
  public void testClonesLBHttpSolrServerCorrectly() throws MalformedURLException {
    LBHttpSolrServer lbSolrServer = new LBHttpSolrServer(BASE_URL, ALTERNATE_BASE_URL);
    lbSolrServer.setAliveCheckInterval(10);


    LBHttpSolrServer clone = SolrServerUtils.clone(lbSolrServer);


    Assert.assertEquals(ReflectionTestUtils.getField(lbSolrServer, FIELD_ALIVE_SERVERS),
        ReflectionTestUtils.getField(clone, FIELD_ALIVE_SERVERS));
    assertLBHttpSolrServerProperties(lbSolrServer, clone);
  }

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Examples of org.apache.solr.client.solrj.impl.LBHttpSolrServer

  }


  @Test
  @SuppressWarnings("unchecked")
  public void testClonesLBHttpSolrServerForCoreCorrectly() throws MalformedURLException {
    LBHttpSolrServer lbSolrServer = new LBHttpSolrServer(BASE_URL, ALTERNATE_BASE_URL);
    lbSolrServer.setAliveCheckInterval(10);


    LBHttpSolrServer clone = SolrServerUtils.clone(lbSolrServer, CORE_NAME);


    Map<String, ?> aliveServers = (Map<String, ?>) ReflectionTestUtils.getField(clone, FIELD_ALIVE_SERVERS);
    Assert.assertThat(aliveServers.keySet(), hasItems(CORE_URL, ALTERNATE_CORE_URL));


    assertLBHttpSolrServerProperties(lbSolrServer, clone);

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Examples of org.apache.solr.client.solrj.impl.LBHttpSolrServer

    assertLBHttpSolrServerProperties(lbSolrServer, clone);
  }


  @Test
  public void testClonesCloudSolrServerCorrectly() throws MalformedURLException {
    LBHttpSolrServer lbSolrServer = new LBHttpSolrServer(BASE_URL, ALTERNATE_BASE_URL);
    CloudSolrServer cloudServer = new CloudSolrServer(ZOO_KEEPER_URL, lbSolrServer);


    CloudSolrServer clone = SolrServerUtils.clone(cloudServer);
    Assert.assertEquals(ZOO_KEEPER_URL, ReflectionTestUtils.getField(clone, FIELD_ZOO_KEEPER));


    LBHttpSolrServer lbClone = clone.getLbServer();
    Assert.assertEquals(ReflectionTestUtils.getField(lbSolrServer, FIELD_ALIVE_SERVERS),
        ReflectionTestUtils.getField(lbClone, FIELD_ALIVE_SERVERS));


    assertLBHttpSolrServerProperties(lbSolrServer, lbClone);
  }

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Examples of org.apache.solr.client.solrj.impl.LBHttpSolrServer

  }


  @Test
  @SuppressWarnings("unchecked")
  public void testClonesCloudSolrServerForCoreCorrectlyWhenCoreNameIsNotEmpty() throws MalformedURLException {
    LBHttpSolrServer lbSolrServer = new LBHttpSolrServer(BASE_URL, ALTERNATE_BASE_URL);
    CloudSolrServer cloudServer = new CloudSolrServer(ZOO_KEEPER_URL, lbSolrServer);


    CloudSolrServer clone = SolrServerUtils.clone(cloudServer, CORE_NAME);
    Assert.assertEquals(ZOO_KEEPER_URL, ReflectionTestUtils.getField(clone, FIELD_ZOO_KEEPER));


    LBHttpSolrServer lbClone = clone.getLbServer();
    Map<String, ?> aliveServers = (Map<String, ?>) ReflectionTestUtils.getField(lbClone, FIELD_ALIVE_SERVERS);
    Assert.assertThat(aliveServers.keySet(), hasItems(CORE_URL, ALTERNATE_CORE_URL));


    assertLBHttpSolrServerProperties(lbSolrServer, lbClone);
    Assert.assertThat(clone.getDefaultCollection(), equalTo(CORE_NAME));

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Examples of org.apache.solr.client.solrj.impl.LBHttpSolrServer

    CloudSolrServer cloudServer = new CloudSolrServer(ZOO_KEEPER_URL);


    CloudSolrServer clone = SolrServerUtils.clone(cloudServer, CORE_NAME);
    Assert.assertEquals(ZOO_KEEPER_URL, ReflectionTestUtils.getField(clone, FIELD_ZOO_KEEPER));


    LBHttpSolrServer lbClone = clone.getLbServer();


    assertLBHttpSolrServerProperties(cloudServer.getLbServer(), lbClone);
    Assert.assertThat(clone.getDefaultCollection(), equalTo(CORE_NAME));
  }

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Examples of org.apache.solr.client.solrj.impl.LBHttpSolrServer


    HttpParams params = new BasicHttpParams();
    params.setParameter("foo", "bar");
    DefaultHttpClient client = new DefaultHttpClient(params);


    LBHttpSolrServer lbSolrServer = new LBHttpSolrServer(client, BASE_URL, ALTERNATE_BASE_URL);


    LBHttpSolrServer cloned = SolrServerUtils.clone(lbSolrServer, CORE_NAME);
    Assert.assertThat(cloned.getHttpClient().getParams(), IsEqual.equalTo(params));


  }

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Examples of org.apache.solr.client.solrj.impl.LBHttpSolrServer

    credentialsProvider.setCredentials(AuthScope.ANY, new UsernamePasswordCredentials("foo", "bar"));


    DefaultHttpClient client = new DefaultHttpClient();
    client.setCredentialsProvider(credentialsProvider);


    LBHttpSolrServer lbSolrServer = new LBHttpSolrServer(client, BASE_URL, ALTERNATE_BASE_URL);


    LBHttpSolrServer cloned = SolrServerUtils.clone(lbSolrServer, CORE_NAME);
    Assert.assertThat(((AbstractHttpClient) cloned.getHttpClient()).getCredentialsProvider(),
        IsEqual.<CredentialsProvider> equalTo(credentialsProvider));
  }

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Examples of org.apache.solr.client.solrj.impl.LBHttpSolrServer

  }


  @Parameters
  public static Collection<Object[]> data() throws MalformedURLException {
    Object[][] data = new Object[][] { { new HttpSolrServer("http://127.0.0.1:8983") },
        { new LBHttpSolrServer("http://127.0.0.1:8983", "http://127.0.0.1:6666") },
        { new CloudSolrServer("http://127.0.0.1:8080") } };
    return Arrays.asList(data);
  }

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Examples of org.apache.solr.client.solrj.impl.LBHttpSolrServer

        for (int i = 0; i < array.size(); i++) {
            serverUrls[i] = array.get(i);
        }


        try {
            LBHttpSolrServer server = new LBHttpSolrServer(serverUrls);
            return server;


        } catch (MalformedURLException e) {
            throw new RuntimeException(e);
        }

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