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https://issues.apache.org/jira/browse/SOLR-6542?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shawn Heisey closed SOLR-6542.
------------------------------
Resolution: Invalid
The exception encountered is exactly what I believe should happen with the code
as it is written. The correct method of setting timeouts has been mentioned in
a comment.
> 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: 4.9, 4.10
> Reporter: Jakob Furrer
> Priority: Minor
>
> I try to get a HttpSolrServer object with the following non-standard
> functionalities:
> * a proxy is used for the connection
> * 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()
> {noformat}
> 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)
> {noformat}
> 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:title=code listing 1|borderStyle=solid}
> /**
> * 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:8983/solr/collection1";;
> 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}
> {code:title=code listing 2|borderStyle=solid}
> /**
> * 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:8983/solr/collection1";;
> 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();
> }
> {code}
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