ONOS-6559 P4Runtime protocol library

Change-Id: I7070b69507dcf2ca47ee1c446bcc2505ca868fb1
diff --git a/protocols/p4runtime/ctl/src/main/java/org/onosproject/p4runtime/ctl/DefaultPacketInEvent.java b/protocols/p4runtime/ctl/src/main/java/org/onosproject/p4runtime/ctl/DefaultPacketInEvent.java
new file mode 100644
index 0000000..dd2f021
--- /dev/null
+++ b/protocols/p4runtime/ctl/src/main/java/org/onosproject/p4runtime/ctl/DefaultPacketInEvent.java
@@ -0,0 +1,93 @@
+/*
+ * Copyright 2017-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.p4runtime.ctl;
+
+import com.google.common.base.Objects;
+import org.onlab.util.ImmutableByteSequence;
+import org.onosproject.event.AbstractEvent;
+import org.onosproject.net.DeviceId;
+import org.onosproject.p4runtime.api.P4RuntimeEvent;
+import org.onosproject.p4runtime.api.P4RuntimeEventListener;
+import org.onosproject.p4runtime.api.P4RuntimeEventSubject;
+import org.onosproject.p4runtime.api.P4RuntimePacketIn;
+
+import java.util.List;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+/**
+ * Default implementation of a packet-in event.
+ */
+final class DefaultPacketInEvent
+        extends AbstractEvent<P4RuntimeEventListener.Type, P4RuntimeEventSubject>
+        implements P4RuntimeEvent {
+
+    DefaultPacketInEvent(DeviceId deviceId, ImmutableByteSequence data,
+                                   List<ImmutableByteSequence> metadata) {
+        super(P4RuntimeEventListener.Type.PACKET_IN, new DefaultPacketIn(deviceId, data, metadata));
+    }
+
+    /**
+     * Default implementation of a packet-in in P4Runtime.
+     */
+    private static final class DefaultPacketIn implements P4RuntimePacketIn {
+
+        private final DeviceId deviceId;
+        private final ImmutableByteSequence data;
+        private final List<ImmutableByteSequence> metadata;
+
+        private DefaultPacketIn(DeviceId deviceId, ImmutableByteSequence data, List<ImmutableByteSequence> metadata) {
+            this.deviceId = checkNotNull(deviceId);
+            this.data = checkNotNull(data);
+            this.metadata = checkNotNull(metadata);
+        }
+
+        @Override
+        public DeviceId deviceId() {
+            return deviceId;
+        }
+
+        @Override
+        public ImmutableByteSequence data() {
+            return data;
+        }
+
+        @Override
+        public List<ImmutableByteSequence> metadata() {
+            return metadata;
+        }
+
+        @Override
+        public boolean equals(Object o) {
+            if (this == o) {
+                return true;
+            }
+            if (o == null || getClass() != o.getClass()) {
+                return false;
+            }
+            DefaultPacketIn that = (DefaultPacketIn) o;
+            return Objects.equal(deviceId, that.deviceId) &&
+                    Objects.equal(data, that.data) &&
+                    Objects.equal(metadata, that.metadata);
+        }
+
+        @Override
+        public int hashCode() {
+            return Objects.hashCode(deviceId, data, metadata);
+        }
+    }
+}