[ONOS-7683] Add default implementation of telemetry managers
Change-Id: I2f16c53c9467df56c324a208af8a5258a36f7604
diff --git a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/RestTelemetryManager.java b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/RestTelemetryManager.java
new file mode 100644
index 0000000..6f5710b
--- /dev/null
+++ b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/impl/RestTelemetryManager.java
@@ -0,0 +1,132 @@
+/*
+ * 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 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.RestTelemetryAdminService;
+import org.onosproject.openstacktelemetry.api.config.RestTelemetryConfig;
+import org.onosproject.openstacktelemetry.api.config.TelemetryConfig;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.ws.rs.client.Client;
+import javax.ws.rs.client.ClientBuilder;
+import javax.ws.rs.client.Entity;
+import javax.ws.rs.client.WebTarget;
+import javax.ws.rs.core.Response;
+
+/**
+ * REST telemetry manager.
+ */
+@Component(immediate = true)
+@Service
+public class RestTelemetryManager implements RestTelemetryAdminService {
+
+ private final Logger log = LoggerFactory.getLogger(getClass());
+
+ private static final String PROTOCOL = "http";
+ private static final String POST_METHOD = "POST";
+ private static final String GET_METHOD = "GET";
+
+ private WebTarget target = null;
+ private RestTelemetryConfig restConfig = null;
+
+ @Activate
+ protected void activate() {
+ log.info("Started");
+ }
+
+ @Deactivate
+ protected void deactivate() {
+ stop();
+ log.info("Stopped");
+ }
+
+ @Override
+ public void start(TelemetryConfig config) {
+ if (target != null) {
+ log.info("REST producer has already been started");
+ return;
+ }
+
+ restConfig = (RestTelemetryConfig) config;
+
+ StringBuilder restServerBuilder = new StringBuilder();
+ restServerBuilder.append(PROTOCOL);
+ restServerBuilder.append(":");
+ restServerBuilder.append("//");
+ restServerBuilder.append(restConfig.address());
+ restServerBuilder.append(":");
+ restServerBuilder.append(restConfig.port());
+ restServerBuilder.append("/");
+
+ Client client = ClientBuilder.newBuilder().build();
+
+ target = client.target(restServerBuilder.toString()).path(restConfig.endpoint());
+
+ log.info("REST producer has Started");
+ }
+
+ @Override
+ public void stop() {
+ if (target != null) {
+ target = null;
+ }
+
+ log.info("REST producer has Stopped");
+ }
+
+ @Override
+ public void restart(TelemetryConfig config) {
+ stop();
+ start(config);
+ }
+
+ @Override
+ public Response publish(String endpoint, String method, String record) {
+ // TODO: need to find a way to invoke REST endpoint using target
+ return null;
+ }
+
+ @Override
+ public Response publish(String method, String record) {
+ switch (method) {
+ case POST_METHOD:
+ return target.request(restConfig.requestMediaType())
+ .post(Entity.json(record));
+ case GET_METHOD:
+ return target.request(restConfig.requestMediaType()).get();
+ default:
+ return null;
+ }
+ }
+
+ @Override
+ public Response publish(String record) {
+ switch (restConfig.method()) {
+ case POST_METHOD:
+ return target.request(restConfig.requestMediaType())
+ .post(Entity.json(record));
+ case GET_METHOD:
+ return target.request(restConfig.requestMediaType()).get();
+ default:
+ return null;
+ }
+ }
+}