NETTY-423 Add ChannelPipeline.getNames()

src/main/java/org/jboss/netty/channel/ChannelPipeline.java

@@ -17,6 +17,7 @@ package org.jboss.netty.channel;
 
 import java.io.InputStream;
 import java.io.OutputStream;
+import java.util.List;
 import java.util.Map;
 import java.util.NoSuchElementException;
 
@@ -488,6 +489,11 @@ public interface ChannelPipeline {
      */
     boolean isAttached();
 
+    /**
+     * Returns the {@link List} of the handler names.
+     */
+    List<String> getNames();
+
     /**
      * Converts this pipeline into an ordered {@link Map} whose keys are
      * handler names and whose values are handlers.

src/main/java/org/jboss/netty/channel/DefaultChannelPipeline.java

@@ -15,8 +15,10 @@
  */
 package org.jboss.netty.channel;
 
+import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.LinkedHashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.NoSuchElementException;
 
@@ -510,6 +512,24 @@ public class DefaultChannelPipeline implements ChannelPipeline {
         return null;
     }
 
+    @Override
+    public List<String> getNames() {
+        List<String> list = new ArrayList<String>();
+        if (name2ctx.isEmpty()) {
+            return list;
+        }
+
+        DefaultChannelHandlerContext ctx = head;
+        for (;;) {
+            list.add(ctx.getName());
+            ctx = ctx.next;
+            if (ctx == null) {
+                break;
+            }
+        }
+        return list;
+    }
+
     @Override
     public Map<String, ChannelHandler> toMap() {
         Map<String, ChannelHandler> map = new LinkedHashMap<String, ChannelHandler>();

src/main/java/org/jboss/netty/channel/StaticChannelPipeline.java

@@ -15,8 +15,10 @@
  */
 package org.jboss.netty.channel;
 
+import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.LinkedHashMap;
+import java.util.List;
 import java.util.Map;
 
 import org.jboss.netty.logging.InternalLogger;
@@ -340,6 +342,15 @@ public class StaticChannelPipeline implements ChannelPipeline {
         return null;
     }
 
+    @Override
+    public List<String> getNames() {
+        List<String> list = new ArrayList<String>();
+        for (StaticChannelHandlerContext ctx: contexts) {
+            list.add(ctx.getName());
+        }
+        return list;
+    }
+
     @Override
     public Map<String, ChannelHandler> toMap() {
         Map<String, ChannelHandler> map = new LinkedHashMap<String, ChannelHandler>();