Bug 50178 - HeaderManager added as child of Thread Group can create concatenated HeaderManager names and OutOfMemoryException

git-svn-id: https://svn.apache.org/repos/asf/jakarta/jmeter/trunk@1028948 13f79535-47bb-0310-9956-ffa450edef68

src/core/org/apache/jmeter/testelement/AbstractTestElement.java

@@ -86,6 +86,15 @@ public abstract class AbstractTestElement implements TestElement, Serializable {
         propMap.clear();
     }
 
+    /**
+     * {@inheritDoc}
+     * <p>
+     * Default implementation - does nothing
+     */
+    public void clearTestElementChildren(){
+        // NOOP
+    }
+
     /**
      * {@inheritDoc}
      */

src/core/org/apache/jmeter/testelement/TestElement.java

@@ -38,6 +38,12 @@ public interface TestElement extends Cloneable {
 
     public void addTestElement(TestElement child);
     
+    /**
+     * This method should clear any test element properties that are merged
+     * by {@link #addTestElement(TestElement)}.
+     */
+    public void clearTestElementChildren();
+
     public void setProperty(String key, String value);
 
     public void setProperty(String key, String value, String dflt);

src/core/org/apache/jmeter/threads/TestCompiler.java

@@ -240,7 +240,8 @@ public class TestCompiler implements HashTreeTraverser {
 
     private static class ObjectPair
     {
-        private TestElement child, parent;
+        private final TestElement child;
+        private final TestElement parent;
 
         public ObjectPair(TestElement one, TestElement two) {
             this.child = one;
@@ -270,6 +271,7 @@ public class TestCompiler implements HashTreeTraverser {
     }
 
     private void configureWithConfigElements(Sampler sam, List<ConfigTestElement> configs) {
+        sam.clearTestElementChildren();
         Iterator<ConfigTestElement> iter = configs.iterator();
         while (iter.hasNext()) {
             ConfigTestElement config = iter.next();

src/protocol/http/org/apache/jmeter/protocol/http/sampler/HTTPSamplerBase.java

@@ -528,6 +528,16 @@ public abstract class HTTPSamplerBase extends AbstractSampler
         }
     }
 
+    /**
+     * {@inheritDoc}
+     * <p>
+     * Clears the Header Manager property so subsequent loops don't keep merging more elements
+     */
+    @Override
+    public void clearTestElementChildren(){
+        removeProperty(HEADER_MANAGER);
+    }
+
     public void setPort(int value) {
         setProperty(new IntegerProperty(PORT, value));
     }

xdocs/changes.xml

@@ -68,6 +68,7 @@ To override the default local language fully, set the JMeter property "language"
 
 <h3>HTTP Samplers and Proxy</h3>
 <ul>
+<li>Bug 50178 - HeaderManager added as child of Thread Group can create concatenated HeaderManager names and OutOfMemoryException</li>
 </ul>
 
 <h3>Other Samplers</h3>