Initial import of CFM and SOAM api

Change-Id: Icf5cc2d5fb34b75460e80e8cced0d70265bcd33b
diff --git a/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/cfm/identifier/MaIdRfc2685VpnId.java b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/cfm/identifier/MaIdRfc2685VpnId.java
new file mode 100644
index 0000000..d4e623c
--- /dev/null
+++ b/incubator/api/src/main/java/org/onosproject/incubator/net/l2monitoring/cfm/identifier/MaIdRfc2685VpnId.java
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2017-present Open Networking Foundation
+ *
+ * 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.onosproject.incubator.net.l2monitoring.cfm.identifier;
+
+import org.onlab.util.Identifier;
+
+/**
+ * A representation of a Rfc2685VpnId identifier in Hexadecimal as an MA identifier.
+ */
+public final class MaIdRfc2685VpnId extends Identifier<String> implements MaIdShort {
+    private static final String VPNID_HEX_PATTERN = "([a-f|A-F|0-9]{2}:){6}[a-f|A-F|0-9]{2}";
+
+    protected MaIdRfc2685VpnId(String maNameHex) {
+        super(maNameHex);
+    }
+
+    @Override
+    public String maName() {
+        return identifier;
+    }
+
+    /**
+     * Identifier will be in the format aa:bb:cc:dd:ee:ff:11.
+     * Each pair of hex chars (and one colon) is one byte
+     * To get the length in bytes add 1 (extra colon) and divide by 3
+     * @return name length in bytes
+     */
+    @Override
+    public int getNameLength() {
+        return (identifier.length() + 1) / 3;
+    }
+
+    @Override
+    public MaIdType nameType() {
+        return MaIdType.RFC2685VPNID;
+    }
+
+    public static MaIdShort asMaIdHex(String hexString) {
+        if (hexString == null || !hexString.matches(VPNID_HEX_PATTERN)) {
+            throw new IllegalArgumentException("MA Name must follow pattern " +
+                    VPNID_HEX_PATTERN + " Rejecting: " + hexString);
+        }
+        return new MaIdRfc2685VpnId(hexString.toLowerCase());
+    }
+}