Placed API and implementation into separate packages
Change-Id: If8a9223a7a225db1b2aa2d09738857af482736bc
diff --git a/src/main/java/org/onosproject/cordvtn/api/NetworkAddress.java b/src/main/java/org/onosproject/cordvtn/api/NetworkAddress.java
new file mode 100644
index 0000000..23c7318
--- /dev/null
+++ b/src/main/java/org/onosproject/cordvtn/api/NetworkAddress.java
@@ -0,0 +1,114 @@
+/*
+ * Copyright 2016-present 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.onosproject.cordvtn.api;
+
+import com.google.common.base.MoreObjects;
+import org.onlab.packet.IpAddress;
+import org.onlab.packet.IpPrefix;
+
+import java.util.Objects;
+
+import static com.google.common.base.Preconditions.checkArgument;
+
+/**
+ * Representation of a network address, which consists of IP address and prefix.
+ */
+public final class NetworkAddress {
+ private final IpAddress ip;
+ private final IpPrefix prefix;
+
+ /**
+ * Constructor for a given IP address and prefix.
+ *
+ * @param ip ip address
+ * @param prefix ip prefix
+ */
+ public NetworkAddress(IpAddress ip, IpPrefix prefix) {
+ this.ip = ip;
+ this.prefix = prefix;
+ }
+
+ /**
+ * Converts a CIDR notation string into a network address.
+ *
+ * @param cidr cidr
+ * @return network address
+ * @throws IllegalArgumentException if the cidr is not valid
+ */
+ public static NetworkAddress valueOf(String cidr) {
+ checkArgument(cidr.contains("/"));
+
+ IpAddress ipAddress = IpAddress.valueOf(cidr.split("/")[0]);
+ IpPrefix ipPrefix = IpPrefix.valueOf(cidr);
+
+ return new NetworkAddress(ipAddress, ipPrefix);
+ }
+
+ /**
+ * Returns the IP address value of the network address.
+ *
+ * @return ip address
+ */
+ public IpAddress ip() {
+ return this.ip;
+ }
+
+ /**
+ * Returns the IP prefix value of the network address.
+ *
+ * @return ip prefix
+ */
+ public IpPrefix prefix() {
+ return this.prefix;
+ }
+
+ /**
+ * Converts a network address to a CIDR notation.
+ *
+ * @return cidr notation string
+ */
+ public String cidr() {
+ return ip.toString() + "/" + prefix.prefixLength();
+ }
+
+ @Override
+ public boolean equals(Object obj) {
+ if (this == obj) {
+ return true;
+ }
+
+ if (obj instanceof NetworkAddress) {
+ NetworkAddress that = (NetworkAddress) obj;
+ if (Objects.equals(ip, that.ip) && Objects.equals(prefix, that.prefix)) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ @Override
+ public int hashCode() {
+ return Objects.hash(ip, prefix);
+ }
+
+ @Override
+ public String toString() {
+ return MoreObjects.toStringHelper(getClass())
+ .add("IpAddress", ip)
+ .add("IpPrefix", prefix)
+ .toString();
+ }
+}