SOLR-5636: SolrRequestParsers does some xpath lookups on every request, which can cause concurrency issues.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1558688 13f79535-47bb-0310-9956-ffa450edef68

solr/CHANGES.txt

@@ -204,6 +204,9 @@ Bug Fixes
 * SOLR-4992: Solr eats OutOfMemoryError exceptions in many cases.
   (Mark Miller, Daniel Collins)  
 
+* SOLR-5636: SolrRequestParsers does some xpath lookups on every request, which
+  can cause concurrency issues. (Mark Miller)
+
 Optimizations
 ----------------------
 

solr/core/src/java/org/apache/solr/core/SolrConfig.java

@@ -80,6 +80,16 @@ public class SolrConfig extends Config {
     NOOP
     }
 
+  private int multipartUploadLimitKB;
+
+  private int formUploadLimitKB;
+
+  private boolean enableRemoteStreams;
+
+  private boolean handleSelect;
+
+  private boolean addHttpRequestToContext;
+  
   /** Creates a default instance from the solrconfig.xml. */
   public SolrConfig()
   throws ParserConfigurationException, IOException, SAXException {
@@ -259,6 +269,22 @@ public class SolrConfig extends Config {
 
      updateHandlerInfo = loadUpdatehandlerInfo();
      
+     multipartUploadLimitKB = getInt( 
+         "requestDispatcher/requestParsers/@multipartUploadLimitInKB", 2048 );
+     
+     formUploadLimitKB = getInt( 
+         "requestDispatcher/requestParsers/@formdataUploadLimitInKB", 2048 );
+     
+     enableRemoteStreams = getBool( 
+         "requestDispatcher/requestParsers/@enableRemoteStreaming", false ); 
+ 
+     // Let this filter take care of /select?xxx format
+     handleSelect = getBool( 
+         "requestDispatcher/@handleSelect", true ); 
+     
+     addHttpRequestToContext = getBool( 
+         "requestDispatcher/requestParsers/@addHttpRequestToContext", false ); 
+
     Config.log.info("Loaded SolrConfig: " + name);
   }
 
@@ -531,4 +557,24 @@ public class SolrConfig extends Config {
       loader.reloadLuceneSPI();
     }
   }
+  
+  public int getMultipartUploadLimitKB() {
+    return multipartUploadLimitKB;
+  }
+
+  public int getFormUploadLimitKB() {
+    return formUploadLimitKB;
+  }
+
+  public boolean isHandleSelect() {
+    return handleSelect;
+  }
+
+  public boolean isAddHttpRequestToContext() {
+    return addHttpRequestToContext;
+  }
+
+  public boolean isEnableRemoteStreams() {
+    return enableRemoteStreams;
+  }
 }

solr/core/src/java/org/apache/solr/servlet/SolrRequestParsers.java

@@ -17,16 +17,16 @@
 
 package org.apache.solr.servlet;
 
+import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
-import java.io.ByteArrayOutputStream;
+import java.net.URL;
 import java.nio.ByteBuffer;
 import java.nio.charset.CharacterCodingException;
 import java.nio.charset.Charset;
 import java.nio.charset.CharsetDecoder;
 import java.nio.charset.CodingErrorAction;
-import java.net.URL;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
@@ -36,8 +36,6 @@ import java.util.LinkedList;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import javax.servlet.http.HttpServletRequest;
 
@@ -53,10 +51,12 @@ import org.apache.solr.common.params.SolrParams;
 import org.apache.solr.common.util.ContentStream;
 import org.apache.solr.common.util.ContentStreamBase;
 import org.apache.solr.common.util.FastInputStream;
-import org.apache.solr.core.Config;
+import org.apache.solr.core.SolrConfig;
 import org.apache.solr.core.SolrCore;
 import org.apache.solr.request.SolrQueryRequest;
 import org.apache.solr.request.SolrQueryRequestBase;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 
 public class SolrRequestParsers 
@@ -89,7 +89,7 @@ public class SolrRequestParsers
    * Pass in an xml configuration.  A null configuration will enable
    * everything with maximum values.
    */
-  public SolrRequestParsers( Config globalConfig ) {
+  public SolrRequestParsers( SolrConfig globalConfig ) {
     final int multipartUploadLimitKB, formUploadLimitKB;
     if( globalConfig == null ) {
       multipartUploadLimitKB = formUploadLimitKB = Integer.MAX_VALUE; 
@@ -97,21 +97,16 @@ public class SolrRequestParsers
       handleSelect = true;
       addHttpRequestToContext = false;
     } else {
-      multipartUploadLimitKB = globalConfig.getInt( 
+      multipartUploadLimitKB = globalConfig.getMultipartUploadLimitKB();
-          "requestDispatcher/requestParsers/@multipartUploadLimitInKB", 2048 );
       
-      formUploadLimitKB = globalConfig.getInt( 
+      formUploadLimitKB = globalConfig.getFormUploadLimitKB();
-          "requestDispatcher/requestParsers/@formdataUploadLimitInKB", 2048 );
       
-      enableRemoteStreams = globalConfig.getBool( 
+      enableRemoteStreams = globalConfig.isEnableRemoteStreams();
-          "requestDispatcher/requestParsers/@enableRemoteStreaming", false ); 
   
       // Let this filter take care of /select?xxx format
-      handleSelect = globalConfig.getBool( 
+      handleSelect = globalConfig.isHandleSelect();
-          "requestDispatcher/@handleSelect", true ); 
       
-      addHttpRequestToContext = globalConfig.getBool( 
+      addHttpRequestToContext = globalConfig.isAddHttpRequestToContext();
-          "requestDispatcher/requestParsers/@addHttpRequestToContext", false ); 
     }
     init(multipartUploadLimitKB, formUploadLimitKB);
   }