1 files changed, 57 insertions, 0 deletions
diff --git a/framework/src/onos/utils/misc/src/main/java/org/onlab/util/HexDump.java b/framework/src/onos/utils/misc/src/main/java/org/onlab/util/HexDump.java
new file mode 100755
index 00000000..cfb79390
--- /dev/null
+++ b/framework/src/onos/utils/misc/src/main/java/org/onlab/util/HexDump.java
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * Licensed 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.onlab.util;
+
+import org.jboss.netty.buffer.ChannelBuffer;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * HexDump class an utility to dump buffer in hex format.
+ */
+public final class HexDump {
+    protected static final Logger log = LoggerFactory.getLogger(HexDump.class);
+
+    private HexDump() {
+    }
+
+    /**
+     * Dump the buffer content in hex format.
+     *
+     * @param buff buffer content to dump in hex format
+     */
+    public static void dump(ChannelBuffer buff) {
+        try {
+            byte[] yTemp;
+            yTemp = buff.array();
+
+            int iStartIndex = buff.readerIndex();
+            int iEndIndex = buff.writerIndex();
+            do {
+                StringBuilder sb = new StringBuilder();
+                for (int k = 0; (k < 16) && (iStartIndex < iEndIndex); ++k) {
+                    if (0 == k % 4) {
+                        sb.append(String.format(" ")); // blank after 4 bytes
+                    }
+                    sb.append(String.format("%02X ", yTemp[iStartIndex++]));
+                }
+                log.debug(sb.toString());
+            } while (iStartIndex < iEndIndex);
+        } catch (Exception e) {
+            log.error("[HexDump] Invalid buffer: " + e.toString());
+        }
+    }
+}