[ONOS-7683] Add default implementation of telemetry managers
Change-Id: I2f16c53c9467df56c324a208af8a5258a36f7604
diff --git a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/GrpcTelemetryManager.java b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/GrpcTelemetryManager.java
new file mode 100644
index 0000000..20ded3e
--- /dev/null
+++ b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/GrpcTelemetryManager.java
@@ -0,0 +1,90 @@
+/*
+ * Copyright 2018-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.openstacktelemetry.impl;
+
+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.openstacktelemetry.api.GrpcTelemetryAdminService;
+import org.onosproject.openstacktelemetry.api.config.GrpcTelemetryConfig;
+import org.onosproject.openstacktelemetry.api.config.TelemetryConfig;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * gRPC telemetry manager.
+ */
+@Component(immediate = true)
+@Service
+public class GrpcTelemetryManager implements GrpcTelemetryAdminService {
+
+ private final Logger log = LoggerFactory.getLogger(getClass());
+
+ private ManagedChannel channel = null;
+
+ @Activate
+ protected void activate() {
+ log.info("Started");
+ }
+
+ @Deactivate
+ protected void deactivate() {
+ stop();
+ log.info("Stopped");
+ }
+
+ @Override
+ public void start(TelemetryConfig config) {
+ if (channel != null) {
+ log.info("gRPC producer has already been started");
+ return;
+ }
+
+ GrpcTelemetryConfig grpcConfig = (GrpcTelemetryConfig) config;
+ channel = ManagedChannelBuilder
+ .forAddress(grpcConfig.address(), grpcConfig.port())
+ .maxInboundMessageSize(grpcConfig.maxInboundMsgSize())
+ .usePlaintext(grpcConfig.usePlaintext())
+ .build();
+
+ log.info("gRPC producer has Started");
+ }
+
+ @Override
+ public void stop() {
+ if (channel != null) {
+ channel.shutdown();
+ channel = null;
+ }
+
+ log.info("gRPC producer has Stopped");
+ }
+
+ @Override
+ public void restart(TelemetryConfig config) {
+ stop();
+ start(config);
+ }
+
+ @Override
+ public Object publish(Object record) {
+ // TODO: need to find a way to invoke gRPC endpoint using channel
+ return null;
+ }
+}