[ONOS-6316]create gRPC northbound Host Service and add unit tests
Change-Id: I385f52576000affd2523579c6a6f4c6d57e69938
diff --git a/incubator/protobuf/models/src/main/java/org/onosproject/incubator/protobuf/models/net/HostProtoTranslator.java b/incubator/protobuf/models/src/main/java/org/onosproject/incubator/protobuf/models/net/HostProtoTranslator.java
new file mode 100644
index 0000000..c12fd7f
--- /dev/null
+++ b/incubator/protobuf/models/src/main/java/org/onosproject/incubator/protobuf/models/net/HostProtoTranslator.java
@@ -0,0 +1,81 @@
+/*
+ * 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.protobuf.models.net;
+
+import org.onlab.packet.IpAddress;
+import org.onlab.packet.MacAddress;
+import org.onlab.packet.VlanId;
+import org.onosproject.grpc.net.models.HostProtoOuterClass.HostProto;
+import org.onosproject.net.DefaultAnnotations;
+import org.onosproject.net.DefaultHost;
+import org.onosproject.net.Host;
+
+import java.util.stream.Collectors;
+
+/**
+ * gRPC HostProto message to equivalent ONOS Host conversion related utilities.
+ */
+public final class HostProtoTranslator {
+
+
+ /**
+ * Translates {@link Host} to gRPC Host message.
+ *
+ * @param host {@link Host}
+ * @return gRPC HostProto message
+ */
+ public static HostProto translate(Host host) {
+
+ if (host != null) {
+ return HostProto.newBuilder()
+ .setHostId(HostIdProtoTranslator.translate(host.id()))
+ .setConfigured(host.configured())
+ .setVlan(host.vlan().toShort())
+ .addAllIpAddresses(host.ipAddresses().stream()
+ .map(IpAddress::toString)
+ .collect(Collectors.toList()))
+ .setLocation(HostLocationProtoTranslator.translate(host.location()))
+ .build();
+ }
+
+ return HostProto.getDefaultInstance();
+ }
+
+ /**
+ * Translates gRPC Host message to {@link Host}.
+ *
+ * @param host gRPC message
+ * @return {@link Host}
+ */
+ public static Host translate(HostProto host) {
+ if (host.equals(HostProto.getDefaultInstance())) {
+ return null;
+ }
+
+ return new DefaultHost(ProviderIdProtoTranslator.translate(host.getProviderId()),
+ HostIdProtoTranslator.translate(host.getHostId()),
+ MacAddress.valueOf(host.getHostId().getMac()),
+ VlanId.vlanId((short) host.getVlan()),
+ HostLocationProtoTranslator.translate(host.getLocation()),
+ host.getIpAddressesList().stream().map(x -> IpAddress.valueOf(x))
+ .collect(Collectors.toSet()),
+ DefaultAnnotations.builder().putAll(host.getAnnotationsMap()).build());
+ }
+
+ // Utility class not intended for instantiation.
+ private HostProtoTranslator() {}
+}