onos commit hash c2999f30c69e50df905a9d175ef80b3f23a98514

Change-Id: I2bb8562c4942b6d6a6d60b663db2e17540477b81
Signed-off-by: Ashlee Young <ashlee@wildernessvoice.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/framework/src/onos/core/api/src/main/java/org/onosproject/net/group/DefaultGroupKey.java b/framework/src/onos/core/api/src/main/java/org/onosproject/net/group/DefaultGroupKey.java
index 7f00ae70..e1eacd1e 100644
--- a/framework/src/onos/core/api/src/main/java/org/onosproject/net/group/DefaultGroupKey.java
+++ b/framework/src/onos/core/api/src/main/java/org/onosproject/net/group/DefaultGroupKey.java
@@ -25,6 +25,7 @@ import java.util.Arrays;
 public class DefaultGroupKey implements GroupKey {
 
     private final byte[] key;
+    protected static final char[] HEX_ARRAY = "0123456789ABCDEF".toCharArray();
 
     public DefaultGroupKey(byte[] key) {
         this.key = checkNotNull(key);
@@ -52,4 +53,20 @@ public class DefaultGroupKey implements GroupKey {
         return Arrays.hashCode(this.key);
     }
 
+    /**
+     * Returns a hex string representation of the byte array that is used
+     * as a group key. This solution was adapted from
+     * http://stackoverflow.com/questions/9655181/
+     */
+    @Override
+    public String toString() {
+        char[] hexChars = new char[key.length * 2];
+        for (int j = 0; j < key.length; j++) {
+            int v = key[j] & 0xFF;
+            hexChars[j * 2] = HEX_ARRAY[v >>> 4];
+            hexChars[j * 2 + 1] = HEX_ARRAY[v & 0x0F];
+        }
+        return "GroupKey:0x" + new String(hexChars);
+    }
+
 }
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