[ONOS-6465] gRPC Protocol and controller
Change-Id: I0ae997f234ce95a78db2db1917f2cbbe3696ccfd
diff --git a/protocols/grpc/ctl/src/main/java/org/onosproject/grpc/ctl/GrpcControllerImpl.java b/protocols/grpc/ctl/src/main/java/org/onosproject/grpc/ctl/GrpcControllerImpl.java
new file mode 100644
index 0000000..4ce097d
--- /dev/null
+++ b/protocols/grpc/ctl/src/main/java/org/onosproject/grpc/ctl/GrpcControllerImpl.java
@@ -0,0 +1,127 @@
+/*
+ * 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.grpc.ctl;
+
+import com.google.common.collect.ImmutableSet;
+import io.grpc.ManagedChannel;
+import io.grpc.ManagedChannelBuilder;
+import org.apache.felix.scr.annotations.Activate;
+import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Deactivate;
+import org.apache.felix.scr.annotations.Service;
+import org.onosproject.grpc.api.GrpcChannelId;
+import org.onosproject.grpc.api.GrpcController;
+import org.onosproject.grpc.api.GrpcObserverHandler;
+import org.onosproject.grpc.api.GrpcStreamObserverId;
+import org.onosproject.net.DeviceId;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+
+/**
+ * Default implementation of the GrpcController.
+ */
+@Component(immediate = true)
+@Service
+public class GrpcControllerImpl implements GrpcController {
+
+ public static final Logger log = LoggerFactory
+ .getLogger(GrpcControllerImpl.class);
+
+ private Map<GrpcStreamObserverId, GrpcObserverHandler> observers;
+ private Map<GrpcChannelId, ManagedChannel> channels;
+ private Map<GrpcChannelId, ManagedChannelBuilder<?>> channelBuilders;
+
+ @Activate
+ public void activate() {
+ observers = new ConcurrentHashMap<>();
+ channels = new ConcurrentHashMap<>();
+ channelBuilders = new ConcurrentHashMap<>();
+ log.info("Started");
+ }
+
+ @Deactivate
+ public void deactivate() {
+ channels.values().forEach(ManagedChannel::shutdown);
+ observers.clear();
+ channels.clear();
+ channelBuilders.clear();
+ log.info("Stopped");
+ }
+
+ @Override
+ public void addObserver(GrpcStreamObserverId observerId, GrpcObserverHandler grpcObserverHandler) {
+ grpcObserverHandler.bindObserver(channels.get(observerId.serviceId().channelId()));
+ observers.put(observerId, grpcObserverHandler);
+ }
+
+ @Override
+ public void removeObserver(GrpcStreamObserverId observerId) {
+ observers.get(observerId).removeObserver();
+ observers.remove(observerId);
+ }
+
+ @Override
+ public Optional<GrpcObserverHandler> getObserverManager(GrpcStreamObserverId observerId) {
+ return Optional.ofNullable(observers.get(observerId));
+ }
+
+ @Override
+ public ManagedChannel connectChannel(GrpcChannelId channelId, ManagedChannelBuilder<?> channelBuilder) {
+ ManagedChannel channel = channelBuilder.build();
+
+ channel.getState(true);
+ channelBuilders.put(channelId, channelBuilder);
+ channels.put(channelId, channel);
+ return channel;
+ }
+
+ @Override
+ public void disconnectChannel(GrpcChannelId channelId) {
+ channels.get(channelId).shutdown();
+ channels.remove(channelId);
+ channelBuilders.remove(channelId);
+ }
+
+ @Override
+ public Map<GrpcChannelId, ManagedChannel> getChannels() {
+ return channels;
+ }
+
+ @Override
+ public Collection<ManagedChannel> getChannels(final DeviceId deviceId) {
+ final Set<ManagedChannel> deviceChannels = new HashSet<>();
+ channels.forEach((k, v) -> {
+ if (k.deviceId().equals(deviceId)) {
+ deviceChannels.add(v);
+ }
+ });
+
+ return ImmutableSet.copyOf(deviceChannels);
+ }
+
+ @Override
+ public Optional<ManagedChannel> getChannel(GrpcChannelId channelId) {
+ return Optional.ofNullable(channels.get(channelId));
+ }
+}