Jakob Furrer created SOLR-6542:
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Summary: Method setConnectionTimeout throws Exception when using
HttpSolrServer with a proxy
Key: SOLR-6542
URL: https://issues.apache.org/jira/browse/SOLR-6542
Project: Solr
Issue Type: Bug
Components: clients - java
Affects Versions: 4.10, 4.9
Reporter: Jakob Furrer
Priority: Minor
I try to get a HttpSolrServer object with the following non-standard
functionalities:
a) a proxy is used for the connection
b) the connection timeout is set
A HttpClient object is required for setting proxy (see code listing [1]).
The timeout can either be defined on the internal httpClient object (see option
[a]) or later on the created httpSolrServer object (see option [b])
Question one:
Is there a difference in behaviour of the HttpSolrServer instance when I set
the connection timeout directly in my own HttpClient object in comparison to
using the method HttpSolrServer#setConnectionTimeout() ?
I would expect that there is no difference.
Moving from Solr 4.6 to Solr 4.9, I also upgraded HttpClient to the same
Version Solr is using (httpclient-4.2.6 was used in solr-4.6, now
httpclient-4.3.1 is used in solr-4.9).
The newer version of HttpSolr deprecates a number of methods used in my code,
therefore I was looking for a way to modify it according to the new API (see
code listing [2]).
I now get an java.lang.UnsupportedOperationException when using the method
HttpSolrServer#setConnectionTimeout()
java.lang.UnsupportedOperationException
at
org.apache.http.impl.client.InternalHttpClient.getParams(InternalHttpClient.java:204)
at
org.apache.solr.client.solrj.impl.HttpClientUtil.setConnectionTimeout(HttpClientUtil.java:249)
at
org.apache.solr.client.solrj.impl.HttpSolrServer.setConnectionTimeout(HttpSolrServer.java:634)
at
test.HttpSolrServerTest.newStyle_httpclient_4_3_1(HttpSolrServerTest.java:89)
It seems that since the switch of the library HttpClient something internally
clashes in the HttpSolrServer object.
Question two:
Is this something that has been overlooked when the library within SolrJ was
changed to the newer version, or am trying something that must not be done?
I would expect that the method HttpSolrServer#setConnectionTimeout() can be
used, independent of the way I chose to create that object.
Bonus question:
Am I using an acceptable way of accessing Solr over a proxy or are there better
methods?
/**
* code listing [1]:
*
* requires the following libraries to run
* httpclient-4.2.6.jar
* httpcore-4.2.5.jar
* solr-solrj-4.6.0.jar
*
* --> shows lots of deprecated methods when using
httpclient-4.3.1.jar
*/
@Test
public void oldStyle_httpclient_4_2_6() throws Exception {
String solrUrlForPing =
"http://localhost:8060/FTS-Index/WebOffice";;
String proxyHost = "127.0.0.1";
int proxyPort = 8888; // Using "Fiddler" as dummy proxy
int maxTimeout = 10000; // 10 seconds
final HttpParams httpParams = new BasicHttpParams();
// option a) timeout can be set as a parameter of the httpClient
HttpConnectionParams.setConnectionTimeout(httpParams,
maxTimeout);
HttpConnectionParams.setSoTimeout(httpParams, maxTimeout);
ClientConnectionManager connMgr = new
PoolingClientConnectionManager();
HttpClient httpClient = new DefaultHttpClient(connMgr,
httpParams);
HttpHost httpProxy = new HttpHost(proxyHost, proxyPort);
httpClient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, httpProxy);
HttpSolrServer httpSolrServer = new
HttpSolrServer(solrUrlForPing, httpClient);
// option b) timeout can be set on the httpSolrServer object
httpSolrServer.setConnectionTimeout(maxTimeout);
httpSolrServer.setSoTimeout(maxTimeout);
httpSolrServer.ping();
}
/**
* code listing [2]:
*
* requires the following libraries to run
* httpclient-4.3.1.jar
* httpcore-4.3.jar
* solr-solrj-4.9.0.jar
*/
@Test
public void newStyle_httpclient_4_3_1() throws Exception {
String solrUrlForPing =
"http://localhost:8060/FTS-Index/WebOffice";;
String proxyHost = "127.0.0.1";
int proxyPort = 8888; // Using "Fiddler" as dummy proxy
int maxTimeout = 10000; // 10 seconds
HttpClientBuilder hcBuilder = HttpClients.custom();
// setting the maximum allowed timeout
RequestConfig config = RequestConfig.custom()
.setSocketTimeout(maxTimeout)
.setConnectTimeout(maxTimeout)
.build();
hcBuilder.setDefaultRequestConfig(config);
HttpHost httpProxy = new HttpHost(proxyHost, proxyPort);
DefaultProxyRoutePlanner routePlanner = new
DefaultProxyRoutePlanner(httpProxy);
hcBuilder.setRoutePlanner(routePlanner);
HttpClient httpClient = hcBuilder.build();
HttpSolrServer httpSolrServer = new
HttpSolrServer(solrUrlForPing, httpClient);
// option b) timeout can be set on the httpSolrServer object
httpSolrServer.setConnectionTimeout(maxTimeout); // -->
THROWS java.lang.UnsupportedOperationException
httpSolrServer.setSoTimeout(maxTimeout); // -->
THROWS java.lang.UnsupportedOperationException
httpSolrServer.ping();
}
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