1 files changed, 151 insertions, 0 deletions
diff --git a/java/common/src/main/java/org/apache/qpid/transport/network/Frame.java b/java/common/src/main/java/org/apache/qpid/transport/network/Frame.java
new file mode 100644
index 0000000000..849355276e
--- /dev/null
+++ b/java/common/src/main/java/org/apache/qpid/transport/network/Frame.java
@@ -0,0 +1,151 @@
+/*
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ */
+package org.apache.qpid.transport.network;
+
+import org.apache.qpid.transport.SegmentType;
+import org.apache.qpid.transport.util.SliceIterator;
+
+import java.nio.ByteBuffer;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Iterator;
+
+import static org.apache.qpid.transport.util.Functions.*;
+
+
+/**
+ * Frame
+ *
+ * @author Rafael H. Schloming
+ */
+
+public final class Frame implements NetworkEvent
+{
+    public static final int HEADER_SIZE = 12;
+
+    // XXX: enums?
+    public static final byte L1 = 0;
+    public static final byte L2 = 1;
+    public static final byte L3 = 2;
+    public static final byte L4 = 3;
+
+    public static final byte RESERVED = 0x0;
+
+    public static final byte VERSION = 0x0;
+
+    public static final byte FIRST_SEG = 0x8;
+    public static final byte LAST_SEG = 0x4;
+    public static final byte FIRST_FRAME = 0x2;
+    public static final byte LAST_FRAME = 0x1;
+
+    final private byte flags;
+    final private SegmentType type;
+    final private byte track;
+    final private int channel;
+    final private ByteBuffer body;
+
+    public Frame(byte flags, SegmentType type, byte track, int channel,
+                 ByteBuffer body)
+    {
+        this.flags = flags;
+        this.type = type;
+        this.track = track;
+        this.channel = channel;
+        this.body = body;
+    }
+
+    public ByteBuffer getBody()
+    {
+        return body.slice();
+    }
+
+    public byte getFlags()
+    {
+        return flags;
+    }
+
+    public int getChannel()
+    {
+        return channel;
+    }
+
+    public int getSize()
+    {
+        return body.remaining();
+    }
+
+    public SegmentType getType()
+    {
+        return type;
+    }
+
+    public byte getTrack()
+    {
+        return track;
+    }
+
+    private boolean flag(byte mask)
+    {
+        return (flags & mask) != 0;
+    }
+
+    public boolean isFirstSegment()
+    {
+        return flag(FIRST_SEG);
+    }
+
+    public boolean isLastSegment()
+    {
+        return flag(LAST_SEG);
+    }
+
+    public boolean isFirstFrame()
+    {
+        return flag(FIRST_FRAME);
+    }
+
+    public boolean isLastFrame()
+    {
+        return flag(LAST_FRAME);
+    }
+
+    public void delegate(NetworkDelegate delegate)
+    {
+        delegate.frame(this);
+    }
+
+    public String toString()
+    {
+        StringBuilder str = new StringBuilder();
+
+        str.append(String.format
+                   ("[%05d %05d %1d %s %d%d%d%d] ", getChannel(), getSize(),
+                    getTrack(), getType(),
+                    isFirstSegment() ? 1 : 0, isLastSegment() ? 1 : 0,
+                    isFirstFrame() ? 1 : 0, isLastFrame() ? 1 : 0));
+
+        str.append(str(body));
+
+        return str.toString();
+    }
+
+}