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Posted to commits@camel.apache.org by da...@apache.org on 2011/08/16 14:25:31 UTC

svn commit: r1158230 - in /camel/trunk: camel-core/src/main/java/org/apache/camel/management/mbean/ camel-core/src/main/java/org/apache/camel/util/ camel-core/src/test/java/org/apache/camel/management/ camel-core/src/test/java/org/apache/camel/util/ co...

Author: davsclaus
Date: Tue Aug 16 12:25:31 2011
New Revision: 1158230

URL: http://svn.apache.org/viewvc?rev=1158230&view=rev
Log:
CAMEL-4338: Improved browsable endpoint for JMX, to browse range/all messages as xml. As well to include/not include message body.

Modified:
    camel/trunk/camel-core/src/main/java/org/apache/camel/management/mbean/ManagedBrowsableEndpoint.java
    camel/trunk/camel-core/src/main/java/org/apache/camel/util/MessageHelper.java
    camel/trunk/camel-core/src/test/java/org/apache/camel/management/ManagedBrowseableEndpointAsXmlTest.java
    camel/trunk/camel-core/src/test/java/org/apache/camel/util/MessageHelperTest.java
    camel/trunk/components/camel-jms/src/main/java/org/apache/camel/component/jms/JmsQueueEndpoint.java

Modified: camel/trunk/camel-core/src/main/java/org/apache/camel/management/mbean/ManagedBrowsableEndpoint.java
URL: http://svn.apache.org/viewvc/camel/trunk/camel-core/src/main/java/org/apache/camel/management/mbean/ManagedBrowsableEndpoint.java?rev=1158230&r1=1158229&r2=1158230&view=diff
==============================================================================
--- camel/trunk/camel-core/src/main/java/org/apache/camel/management/mbean/ManagedBrowsableEndpoint.java (original)
+++ camel/trunk/camel-core/src/main/java/org/apache/camel/management/mbean/ManagedBrowsableEndpoint.java Tue Aug 16 12:25:31 2011
@@ -16,6 +16,8 @@
  */
 package org.apache.camel.management.mbean;
 
+import java.util.List;
+
 import org.apache.camel.Exchange;
 import org.apache.camel.Message;
 import org.apache.camel.management.ManagedOperation;
@@ -47,10 +49,12 @@ public class ManagedBrowsableEndpoint ex
 
     @ManagedOperation(description = "Get Exchange from queue by index")
     public String browseExchange(Integer index) {
-        if (index >= endpoint.getExchanges().size()) {
+        List<Exchange> exchanges = endpoint.getExchanges();
+
+        if (index >= exchanges.size()) {
             return null;
         }
-        Exchange exchange = endpoint.getExchanges().get(index);
+        Exchange exchange = exchanges.get(index);
         if (exchange == null) {
             return null;
         }
@@ -60,39 +64,77 @@ public class ManagedBrowsableEndpoint ex
 
     @ManagedOperation(description = "Get message body from queue by index")
     public String browseMessageBody(Integer index) {
-        if (index >= endpoint.getExchanges().size()) {
+        List<Exchange> exchanges = endpoint.getExchanges();
+
+        if (index >= exchanges.size()) {
             return null;
         }
-        Exchange exchange = endpoint.getExchanges().get(index);
+        Exchange exchange = exchanges.get(index);
         if (exchange == null) {
             return null;
         }
 
-        Object body;
+        // must use java type with JMX such as java.lang.String
+        String body;
         if (exchange.hasOut()) {
-            body = exchange.getOut().getBody();
+            body = exchange.getOut().getBody(String.class);
         } else {
-            body = exchange.getIn().getBody();
+            body = exchange.getIn().getBody(String.class);
         }
 
-        // must use java type with JMX such as java.lang.String
-        return body != null ? body.toString() : null;
+        return body;
     }
 
     @ManagedOperation(description = "Get message as XML from queue by index")
-    public String browseMessageAsXml(Integer index) {
-        if (index >= endpoint.getExchanges().size()) {
+    public String browseMessageAsXml(Integer index, Boolean includeBody) {
+        List<Exchange> exchanges = endpoint.getExchanges();
+
+        if (index >= exchanges.size()) {
             return null;
         }
-        Exchange exchange = endpoint.getExchanges().get(index);
+        Exchange exchange = exchanges.get(index);
         if (exchange == null) {
             return null;
         }
 
         Message msg = exchange.hasOut() ? exchange.getOut() : exchange.getIn();
-        String xml = MessageHelper.dumpAsXml(msg);
+        String xml = MessageHelper.dumpAsXml(msg, includeBody);
 
         return xml;
     }
 
+    @ManagedOperation(description = "Gets all the messages as XML from the queue")
+    public String browseAllMessagesAsXml(Boolean includeBody) {
+        return browseRangeMessagesAsXml(0, Integer.MAX_VALUE, includeBody);
+    }
+
+    @ManagedOperation(description = "Gets the range of messages as XML from the queue")
+    public String browseRangeMessagesAsXml(Integer fromIndex, Integer toIndex, Boolean includeBody) {
+        if (fromIndex == null) {
+            fromIndex = 0;
+        }
+        if (toIndex == null) {
+            toIndex = Integer.MAX_VALUE;
+        }
+        if (fromIndex > toIndex) {
+            throw new IllegalArgumentException("From index cannot be larger than to index, was: " + fromIndex + " > " + toIndex);
+        }
+
+        List<Exchange> exchanges = endpoint.getExchanges();
+        if (exchanges.size() == 0) {
+            return null;
+        }
+
+        StringBuilder sb = new StringBuilder();
+        sb.append("<messages>");
+        for (int i = fromIndex; i < exchanges.size() && i <= toIndex; i++) {
+            Exchange exchange = exchanges.get(i);
+            Message msg = exchange.hasOut() ? exchange.getOut() : exchange.getIn();
+            String xml = MessageHelper.dumpAsXml(msg, includeBody);
+            sb.append("\n").append(xml);
+        }
+        sb.append("\n</messages>");
+        return sb.toString();
+    }
+
 }

Modified: camel/trunk/camel-core/src/main/java/org/apache/camel/util/MessageHelper.java
URL: http://svn.apache.org/viewvc/camel/trunk/camel-core/src/main/java/org/apache/camel/util/MessageHelper.java?rev=1158230&r1=1158229&r2=1158230&view=diff
==============================================================================
--- camel/trunk/camel-core/src/main/java/org/apache/camel/util/MessageHelper.java (original)
+++ camel/trunk/camel-core/src/main/java/org/apache/camel/util/MessageHelper.java Tue Aug 16 12:25:31 2011
@@ -251,6 +251,17 @@ public final class MessageHelper {
      * @return the XML
      */
     public static String dumpAsXml(Message message) {
+        return dumpAsXml(message, true);
+    }
+
+    /**
+     * Dumps the message as a generic XML structure.
+     *
+     * @param message  the message
+     * @param includeBody whether or not to include the message body
+     * @return the XML
+     */
+    public static String dumpAsXml(Message message, boolean includeBody) {
         StringBuilder sb = new StringBuilder();
         sb.append("<message>\n");
 
@@ -282,22 +293,24 @@ public final class MessageHelper {
             sb.append("</headers>\n");
         }
 
-        sb.append("<body");
-        String type = ObjectHelper.classCanonicalName(message.getBody());
-        if (type != null) {
-            sb.append(" type=\"" + type + "\"");
-        }
-        sb.append(">");
+        if (includeBody) {
+            sb.append("<body");
+            String type = ObjectHelper.classCanonicalName(message.getBody());
+            if (type != null) {
+                sb.append(" type=\"" + type + "\"");
+            }
+            sb.append(">");
 
-        // dump body value as XML, use Camel type converter to convert to String
-        // do not allow streams, but allow files, and clip very big message bodies (128kb)
-        String xml = extractBodyForLogging(message, "", false, true, 128 * 1024);
-        if (xml != null) {
-            // must always xml encode
-            sb.append(StringHelper.xmlEncode(xml));
-        }
+            // dump body value as XML, use Camel type converter to convert to String
+            // do not allow streams, but allow files, and clip very big message bodies (128kb)
+            String xml = extractBodyForLogging(message, "", false, true, 128 * 1024);
+            if (xml != null) {
+                // must always xml encode
+                sb.append(StringHelper.xmlEncode(xml));
+            }
 
-        sb.append("</body>\n");
+            sb.append("</body>\n");
+        }
 
         sb.append("</message>");
         return sb.toString();

Modified: camel/trunk/camel-core/src/test/java/org/apache/camel/management/ManagedBrowseableEndpointAsXmlTest.java
URL: http://svn.apache.org/viewvc/camel/trunk/camel-core/src/test/java/org/apache/camel/management/ManagedBrowseableEndpointAsXmlTest.java?rev=1158230&r1=1158229&r2=1158230&view=diff
==============================================================================
--- camel/trunk/camel-core/src/test/java/org/apache/camel/management/ManagedBrowseableEndpointAsXmlTest.java (original)
+++ camel/trunk/camel-core/src/test/java/org/apache/camel/management/ManagedBrowseableEndpointAsXmlTest.java Tue Aug 16 12:25:31 2011
@@ -28,7 +28,7 @@ import org.apache.camel.builder.RouteBui
  */
 public class ManagedBrowseableEndpointAsXmlTest extends ManagementTestSupport {
 
-    public void testBrowseableEndpointAsXml() throws Exception {
+    public void testBrowseableEndpointAsXmlIncludeBody() throws Exception {
         getMockEndpoint("mock:result").expectedMessageCount(7);
 
         template.sendBody("direct:start", "<foo>Camel &gt; Donkey</foo>");
@@ -49,42 +49,42 @@ public class ManagedBrowseableEndpointAs
 
         ObjectName name = ObjectName.getInstance("org.apache.camel:context=localhost/camel-1,type=endpoints,name=\"mock://result\"");
 
-        String out = (String) mbeanServer.invoke(name, "browseMessageAsXml", new Object[]{0}, new String[]{"java.lang.Integer"});
+        String out = (String) mbeanServer.invoke(name, "browseMessageAsXml", new Object[]{0, true}, new String[]{"java.lang.Integer", "java.lang.Boolean"});
         assertNotNull(out);
         log.info(out);
 
         assertEquals("<message>\n<body type=\"java.lang.String\">&lt;foo&gt;Camel &amp;gt; Donkey&lt;/foo&gt;</body>\n</message>", out);
 
-        out = (String) mbeanServer.invoke(name, "browseMessageAsXml", new Object[]{1}, new String[]{"java.lang.Integer"});
+        out = (String) mbeanServer.invoke(name, "browseMessageAsXml", new Object[]{1, true}, new String[]{"java.lang.Integer", "java.lang.Boolean"});
         assertNotNull(out);
         log.info(out);
         assertEquals("<message>\n<body type=\"java.lang.String\">Camel &gt; Donkey</body>\n</message>", out);
 
-        out = (String) mbeanServer.invoke(name, "browseMessageAsXml", new Object[]{2}, new String[]{"java.lang.Integer"});
+        out = (String) mbeanServer.invoke(name, "browseMessageAsXml", new Object[]{2, true}, new String[]{"java.lang.Integer", "java.lang.Boolean"});
         assertNotNull(out);
         log.info(out);
         assertEquals("<message>\n<headers>\n<header key=\"name\" type=\"java.lang.String\">Me &amp; You</header>\n</headers>\n"
                 + "<body type=\"java.lang.String\">&lt;foo&gt;Camel &amp;gt; Donkey&lt;/foo&gt;</body>\n</message>", out);
 
-        out = (String) mbeanServer.invoke(name, "browseMessageAsXml", new Object[]{3}, new String[]{"java.lang.Integer"});
+        out = (String) mbeanServer.invoke(name, "browseMessageAsXml", new Object[]{3, true}, new String[]{"java.lang.Integer", "java.lang.Boolean"});
         assertNotNull(out);
         log.info(out);
         assertEquals("<message>\n<headers>\n<header key=\"title\" type=\"java.lang.String\">&lt;title&gt;Me &amp;amp; You&lt;/title&gt;</header>\n</headers>\n"
                 + "<body type=\"java.lang.String\">&lt;foo&gt;Camel &amp;gt; Donkey&lt;/foo&gt;</body>\n</message>", out);
 
-        out = (String) mbeanServer.invoke(name, "browseMessageAsXml", new Object[]{4}, new String[]{"java.lang.Integer"});
+        out = (String) mbeanServer.invoke(name, "browseMessageAsXml", new Object[]{4, true}, new String[]{"java.lang.Integer", "java.lang.Boolean"});
         assertNotNull(out);
         log.info(out);
         assertEquals("<message>\n<headers>\n<header key=\"name\" type=\"java.lang.String\">Me &amp; You</header>\n</headers>\n"
                 + "<body type=\"java.lang.String\">Camel &gt; Donkey</body>\n</message>", out);
 
-        out = (String) mbeanServer.invoke(name, "browseMessageAsXml", new Object[]{5}, new String[]{"java.lang.Integer"});
+        out = (String) mbeanServer.invoke(name, "browseMessageAsXml", new Object[]{5, true}, new String[]{"java.lang.Integer", "java.lang.Boolean"});
         assertNotNull(out);
         log.info(out);
         assertEquals("<message>\n<headers>\n<header key=\"user\" type=\"java.lang.Boolean\">true</header>\n</headers>\n"
                 + "<body type=\"java.lang.Integer\">123</body>\n</message>", out);
 
-        out = (String) mbeanServer.invoke(name, "browseMessageAsXml", new Object[]{6}, new String[]{"java.lang.Integer"});
+        out = (String) mbeanServer.invoke(name, "browseMessageAsXml", new Object[]{6, true}, new String[]{"java.lang.Integer", "java.lang.Boolean"});
         assertNotNull(out);
         log.info(out);
         assertEquals("<message>\n<headers>\n<header key=\"title\" type=\"java.lang.String\">Camel rocks</header>\n"
@@ -93,6 +93,128 @@ public class ManagedBrowseableEndpointAs
                 + "<body type=\"java.lang.String\">&lt;animal&gt;&lt;name&gt;Donkey&lt;/name&gt;&lt;age&gt;17&lt;/age&gt;&lt;/animal&gt;</body>\n</message>", out);
     }
 
+    public void testBrowseableEndpointAsXml() throws Exception {
+        getMockEndpoint("mock:result").expectedMessageCount(2);
+
+        template.sendBodyAndHeader("direct:start", "Hello World", "foo", 123);
+        template.sendBodyAndHeader("direct:start", "Bye World", "foo", 456);
+
+        assertMockEndpointsSatisfied();
+
+        MBeanServer mbeanServer = getMBeanServer();
+
+        ObjectName name = ObjectName.getInstance("org.apache.camel:context=localhost/camel-1,type=endpoints,name=\"mock://result\"");
+
+        String out = (String) mbeanServer.invoke(name, "browseMessageAsXml", new Object[]{0, false}, new String[]{"java.lang.Integer", "java.lang.Boolean"});
+        assertNotNull(out);
+        log.info(out);
+
+        assertEquals("<message>\n<headers>\n<header key=\"foo\" type=\"java.lang.Integer\">123</header>\n</headers>\n</message>", out);
+
+        out = (String) mbeanServer.invoke(name, "browseMessageAsXml", new Object[]{1, false}, new String[]{"java.lang.Integer", "java.lang.Boolean"});
+        assertNotNull(out);
+        log.info(out);
+        assertEquals("<message>\n<headers>\n<header key=\"foo\" type=\"java.lang.Integer\">456</header>\n</headers>\n</message>", out);
+    }
+
+    public void testBrowseableEndpointAsXmlAllIncludeBody() throws Exception {
+        getMockEndpoint("mock:result").expectedMessageCount(2);
+
+        template.sendBody("direct:start", "Hello World");
+        template.sendBodyAndHeader("direct:start", "Bye World", "foo", 456);
+
+        assertMockEndpointsSatisfied();
+
+        MBeanServer mbeanServer = getMBeanServer();
+
+        ObjectName name = ObjectName.getInstance("org.apache.camel:context=localhost/camel-1,type=endpoints,name=\"mock://result\"");
+
+        String out = (String) mbeanServer.invoke(name, "browseAllMessagesAsXml", new Object[]{true}, new String[]{"java.lang.Boolean"});
+        assertNotNull(out);
+        log.info(out);
+
+        assertEquals("<messages>\n<message>\n<body type=\"java.lang.String\">Hello World</body>\n</message>\n"
+                + "<message>\n<headers>\n<header key=\"foo\" type=\"java.lang.Integer\">456</header>\n</headers>\n"
+                + "<body type=\"java.lang.String\">Bye World</body>\n</message>\n</messages>", out);
+    }
+
+    public void testBrowseableEndpointAsXmlAll() throws Exception {
+        getMockEndpoint("mock:result").expectedMessageCount(2);
+
+        template.sendBodyAndHeader("direct:start", "Hello World", "foo", 123);
+        template.sendBodyAndHeader("direct:start", "Bye World", "foo", 456);
+
+        assertMockEndpointsSatisfied();
+
+        MBeanServer mbeanServer = getMBeanServer();
+
+        ObjectName name = ObjectName.getInstance("org.apache.camel:context=localhost/camel-1,type=endpoints,name=\"mock://result\"");
+
+        String out = (String) mbeanServer.invoke(name, "browseAllMessagesAsXml", new Object[]{false}, new String[]{"java.lang.Boolean"});
+        assertNotNull(out);
+        log.info(out);
+
+        assertEquals("<messages>\n<message>\n<headers>\n<header key=\"foo\" type=\"java.lang.Integer\">123</header>\n</headers>\n</message>\n"
+                + "<message>\n<headers>\n<header key=\"foo\" type=\"java.lang.Integer\">456</header>\n</headers>\n</message>\n</messages>", out);
+    }
+
+    public void testBrowseableEndpointAsXmlRangeIncludeBody() throws Exception {
+        getMockEndpoint("mock:result").expectedMessageCount(3);
+
+        template.sendBody("direct:start", "Hello World");
+        template.sendBodyAndHeader("direct:start", "Bye World", "foo", 456);
+        template.sendBody("direct:start", "Hi Camel");
+
+        assertMockEndpointsSatisfied();
+
+        MBeanServer mbeanServer = getMBeanServer();
+
+        ObjectName name = ObjectName.getInstance("org.apache.camel:context=localhost/camel-1,type=endpoints,name=\"mock://result\"");
+
+        String out = (String) mbeanServer.invoke(name, "browseRangeMessagesAsXml", new Object[]{0, 1, true}, new String[]{"java.lang.Integer", "java.lang.Integer", "java.lang.Boolean"});
+        assertNotNull(out);
+        log.info(out);
+
+        assertEquals("<messages>\n<message>\n<body type=\"java.lang.String\">Hello World</body>\n</message>\n"
+                + "<message>\n<headers>\n<header key=\"foo\" type=\"java.lang.Integer\">456</header>\n</headers>\n"
+                + "<body type=\"java.lang.String\">Bye World</body>\n</message>\n</messages>", out);
+    }
+
+    public void testBrowseableEndpointAsXmlRange() throws Exception {
+        getMockEndpoint("mock:result").expectedMessageCount(3);
+
+        template.sendBodyAndHeader("direct:start", "Hello World", "foo", 123);
+        template.sendBodyAndHeader("direct:start", "Bye World", "foo", 456);
+        template.sendBody("direct:start", "Hi Camel");
+
+        assertMockEndpointsSatisfied();
+
+        MBeanServer mbeanServer = getMBeanServer();
+
+        ObjectName name = ObjectName.getInstance("org.apache.camel:context=localhost/camel-1,type=endpoints,name=\"mock://result\"");
+
+        String out = (String) mbeanServer.invoke(name, "browseRangeMessagesAsXml", new Object[]{0, 1, false}, new String[]{"java.lang.Integer", "java.lang.Integer", "java.lang.Boolean"});
+        assertNotNull(out);
+        log.info(out);
+
+        assertEquals("<messages>\n<message>\n<headers>\n<header key=\"foo\" type=\"java.lang.Integer\">123</header>\n</headers>\n</message>\n"
+                + "<message>\n<headers>\n<header key=\"foo\" type=\"java.lang.Integer\">456</header>\n</headers>\n</message>\n</messages>", out);
+    }
+
+    public void testBrowseableEndpointAsXmlRangeInvalidIndex() throws Exception {
+        MBeanServer mbeanServer = getMBeanServer();
+
+        ObjectName name = ObjectName.getInstance("org.apache.camel:context=localhost/camel-1,type=endpoints,name=\"mock://result\"");
+
+        try {
+            mbeanServer.invoke(name, "browseRangeMessagesAsXml", new Object[]{3, 1, false}, new String[]{"java.lang.Integer", "java.lang.Integer", "java.lang.Boolean"});
+            fail("Should have thrown exception");
+        } catch (Exception e) {
+            assertIsInstanceOf(IllegalArgumentException.class, e.getCause());
+            assertEquals("From index cannot be larger than to index, was: 3 > 1", e.getCause().getMessage());
+        }
+    }
+
     @Override
     protected RouteBuilder createRouteBuilder() throws Exception {
         return new RouteBuilder() {

Modified: camel/trunk/camel-core/src/test/java/org/apache/camel/util/MessageHelperTest.java
URL: http://svn.apache.org/viewvc/camel/trunk/camel-core/src/test/java/org/apache/camel/util/MessageHelperTest.java?rev=1158230&r1=1158229&r2=1158230&view=diff
==============================================================================
--- camel/trunk/camel-core/src/test/java/org/apache/camel/util/MessageHelperTest.java (original)
+++ camel/trunk/camel-core/src/test/java/org/apache/camel/util/MessageHelperTest.java Tue Aug 16 12:25:31 2011
@@ -118,7 +118,7 @@ public class MessageHelperTest extends T
         context.stop();
     }
 
-    public void testDumpAsXmlXmlBody() throws Exception {
+    public void testDumpAsXmlBody() throws Exception {
         CamelContext context = new DefaultCamelContext();
         context.start();
 
@@ -134,4 +134,20 @@ public class MessageHelperTest extends T
         context.stop();
     }
 
+    public void testDumpAsXmlNoBody() throws Exception {
+        CamelContext context = new DefaultCamelContext();
+        context.start();
+
+        message = new DefaultExchange(context).getIn();
+
+        // xml message body
+        message.setBody("Hello World");
+        message.setHeader("foo", 123);
+
+        String out = MessageHelper.dumpAsXml(message, false);
+        assertEquals("<message>\n<headers>\n<header key=\"foo\" type=\"java.lang.Integer\">123</header>\n</headers>\n</message>", out);
+
+        context.stop();
+    }
+
 }

Modified: camel/trunk/components/camel-jms/src/main/java/org/apache/camel/component/jms/JmsQueueEndpoint.java
URL: http://svn.apache.org/viewvc/camel/trunk/components/camel-jms/src/main/java/org/apache/camel/component/jms/JmsQueueEndpoint.java?rev=1158230&r1=1158229&r2=1158230&view=diff
==============================================================================
--- camel/trunk/components/camel-jms/src/main/java/org/apache/camel/component/jms/JmsQueueEndpoint.java (original)
+++ camel/trunk/components/camel-jms/src/main/java/org/apache/camel/component/jms/JmsQueueEndpoint.java Tue Aug 16 12:25:31 2011
@@ -127,19 +127,19 @@ public class JmsQueueEndpoint extends Jm
             return null;
         }
 
-        Object body;
+        // must use java type with JMX such as java.lang.String
+        String body;
         if (exchange.hasOut()) {
-            body = exchange.getOut().getBody();
+            body = exchange.getOut().getBody(String.class);
         } else {
-            body = exchange.getIn().getBody();
+            body = exchange.getIn().getBody(String.class);
         }
 
-        // must use java type with JMX such as java.lang.String
-        return body != null ? body.toString() : null;
+        return body;
     }
 
     @ManagedOperation(description = "Get message as XML from queue by index")
-    public String browseMessageAsXml(Integer index) {
+    public String browseMessageAsXml(Integer index, Boolean includeBody) {
         List<Exchange> exchanges = getExchanges();
         if (index >= exchanges.size()) {
             return null;
@@ -150,11 +150,45 @@ public class JmsQueueEndpoint extends Jm
         }
 
         Message msg = exchange.hasOut() ? exchange.getOut() : exchange.getIn();
-        String xml = MessageHelper.dumpAsXml(msg);
+        String xml = MessageHelper.dumpAsXml(msg, includeBody);
 
         return xml;
     }
 
+    @ManagedOperation(description = "Gets all the messages as XML from the queue")
+    public String browseAllMessagesAsXml(Boolean includeBody) {
+        return browseRangeMessagesAsXml(0, Integer.MAX_VALUE, includeBody);
+    }
+
+    @ManagedOperation(description = "Gets the range of messages as XML from the queue")
+    public String browseRangeMessagesAsXml(Integer fromIndex, Integer toIndex, Boolean includeBody) {
+        if (fromIndex == null) {
+            fromIndex = 0;
+        }
+        if (toIndex == null) {
+            toIndex = Integer.MAX_VALUE;
+        }
+        if (fromIndex > toIndex) {
+            throw new IllegalArgumentException("From index cannot be larger than to index, was: " + fromIndex + " > " + toIndex);
+        }
+
+        List<Exchange> exchanges = getExchanges();
+        if (exchanges.size() == 0) {
+            return null;
+        }
+
+        StringBuilder sb = new StringBuilder();
+        sb.append("<messages>");
+        for (int i = fromIndex; i < exchanges.size() && i <= toIndex; i++) {
+            Exchange exchange = exchanges.get(i);
+            Message msg = exchange.hasOut() ? exchange.getOut() : exchange.getIn();
+            String xml = MessageHelper.dumpAsXml(msg, includeBody);
+            sb.append("\n").append(xml);
+        }
+        sb.append("\n</messages>");
+        return sb.toString();
+    }
+
     protected QueueBrowseStrategy createQueueBrowseStrategy() {
         return new DefaultQueueBrowseStrategy();
     }