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/*
* Copyright (c) 2016 Cisco and/or its affiliates.
*
* 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.onap.ranapp.websocket;
import java.io.IOException;
import java.net.URI;
import java.util.HashMap;
import java.util.Map;
import javax.websocket.ClientEndpoint;
import javax.websocket.CloseReason;
import javax.websocket.ContainerProvider;
import javax.websocket.EncodeException;
import javax.websocket.OnClose;
import javax.websocket.OnMessage;
import javax.websocket.OnOpen;
import javax.websocket.Session;
import javax.websocket.WebSocketContainer;
import javax.websocket.server.PathParam;
import org.apache.kafka.clients.producer.ProducerConfig;
import org.apache.kafka.common.serialization.StringSerializer;
import org.json.JSONObject;
import org.onap.ranapp.kafka.model.appmodels.ResponsetoA1;
import org.onap.ranapp.models.DeviceData;
import org.onap.ranapp.models.DeviceDataDecoder;
import org.onap.ranapp.models.DeviceDataEncoder;
import org.onap.ranapp.models.MessageType;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.kafka.core.DefaultKafkaProducerFactory;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.kafka.core.ProducerFactory;
import org.springframework.kafka.support.SendResult;
import org.springframework.kafka.support.serializer.JsonSerializer;
import org.springframework.stereotype.Component;
import org.springframework.util.ObjectUtils;
import org.springframework.util.concurrent.ListenableFuture;
import org.springframework.util.concurrent.ListenableFutureCallback;
import com.fasterxml.jackson.databind.ObjectMapper;
//import src.main.java.com.wipro.www.websocket.Exception;
@Component
@ClientEndpoint(encoders = {DeviceDataEncoder.class}, decoders = {DeviceDataDecoder.class})
public class WebsocketClient {
private static final Logger LOG = LoggerFactory.getLogger(WebsocketClient.class);
private Session clientSession;
private String url;
@Value("${websocketserver.address}")
private String websocketaddress;
@Value("${websocketserver.endpoint}")
private String websocketendpoint;
@Value("${ranapp.name}")
private String ranappName;
@Value(value = "${kafka.bootstrapAddress}")
private String bootstrapAddress;
@Autowired
KafkaTemplate<String, Object> Kafkatemplate;
ResponsetoA1 response=new ResponsetoA1();
ObjectMapper objectMapper = new ObjectMapper();
public static String requestTopicName,responseTopicName;
@OnOpen
public void onOpen(Session session,@PathParam("IpPort") String ipPort) throws IOException {
LOG.info("WebSocket opened (jetty server) Session Id: {}", session.getId());
DeviceData devicedata=new DeviceData();
devicedata.setType(MessageType.INITIAL_CONFIRMATION);
devicedata.setMessage("------------Connection Established to RAN_SIM from "+ ranappName +" ------------");
try {
session.getBasicRemote().sendObject(devicedata);
} catch (IOException e) {
// TODO Auto-generated catch block
LOG.error("Exception while sending message {}", e.getMessage());
} catch (EncodeException e) {
// TODO Auto-generated catch block
LOG.error("Exception while sending message {}", e.getMessage());
}
}
@OnClose
public void OnClose(CloseReason reason, Session session) {
LOG.info("Websocket {} closed. Close reason {}. If closed unintentionally, Retrying...", session.getId(),
reason.getReasonPhrase());
clientSession = null;
new RetryWebsocket(this).start();
}
@OnMessage
public void onMessage(DeviceData deviceData, Session session) {
try {
if (deviceData != null) {
if (deviceData.getMessage() == null || deviceData.getMessage().trim().equals("")) {
LOG.debug("Periodic ping message.... ignore");
return;
} else {
if (deviceData.getType().equals(MessageType.KAFKA_MSG)) {
LOG.info("Message Received: Type:{}, msg:{}, Session Id:{}", deviceData.getType(), deviceData.getMessage(),
session.getId());
produce(deviceData.getMessage());
}
}
}
} catch (Exception e) {
LOG.error("Exception in processing message {}", e.getMessage());
}
}
public void sendMessage(DeviceData deviceData) {
try {
LOG.info("Message to Send: Type:{}, msg:{}, Session Id:{}", deviceData.getType(),
deviceData.getMessage(), clientSession.getId());
if (clientSession != null) {
clientSession.getBasicRemote().sendObject(deviceData);
} else {
LOG.error("Could not get websocket client session!!");
}
} catch (Exception e) {
LOG.error("Exception while sending message {}", e.getMessage());
}
}
public void initWebsocketClient() {
LOG.info("Initializing web socket client");
this.url = "ws://" + websocketaddress + websocketendpoint ;
this.ranappName= ranappName;
new RetryWebsocket(this).start();
}
class RetryWebsocket extends Thread {
WebsocketClient client;
public RetryWebsocket(WebsocketClient client) {
this.client = client;
}
public void run() {
boolean toContinue = true;
while (toContinue) {
try {
client.connectWebsocket();
toContinue = false;
LOG.info("Connection established, Stopping RetryWebsocket");
} catch (Exception e) {
LOG.info("Failed to connect to server, Retrying...");
try {
Thread.sleep(5000);
} catch (InterruptedException e1) {
Thread.currentThread().interrupt();
}
}
}
}
}
public void connectWebsocket() throws Exception {
WebSocketContainer container = ContainerProvider.getWebSocketContainer();
LOG.info("Connecting to Server:"+ url);
clientSession = container.connectToServer(this, new URI(url));
LOG.info("Connected to server, Session id: {}", clientSession.getId());
}
public void start() {
// TODO Auto-generated method stub
initWebsocketClient();
}
public void produce(String responsetoA1) {
JSONObject obj_name = new JSONObject(responsetoA1);
LOG.info(String.format("response message recieved from Ransim \n-> %s \n", obj_name));
try {
response = objectMapper.readValue(obj_name.toString(), ResponsetoA1.class);
LOG.info(String.format("Parsing the incoming json object to ResponsetoA1 class: "+ response +", kafkaresponse topic: "+responseTopicName));
if(ObjectUtils.isEmpty(Kafkatemplate)) {
LOG.info(String.format("Initializing Kakfa producer factory"));
Map<String,Object> config = new HashMap<>();
config.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG,bootstrapAddress);
config.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class);
config.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, JsonSerializer.class);
ProducerFactory<String,Object> producerfactory= new DefaultKafkaProducerFactory(config);
Kafkatemplate=new KafkaTemplate<String, Object>(producerfactory);
}
ListenableFuture<SendResult<String, Object>> future = Kafkatemplate.send(responseTopicName, response);
//Kafkatemplate.send(responseTopicName, response);
future.addCallback(new ListenableFutureCallback<SendResult<String, Object>>() {
@Override
public void onSuccess(SendResult<String, Object> result) {
System.out.println("Sent message=[" + response.toString() +
"] with offset=[" + result.getRecordMetadata().offset() + "Data" + result + "]");
}
@Override
public void onFailure(Throwable ex) {
System.out.println("Unable to send message=["
+ response + "] due to : " + ex.getMessage());
}
});
} catch (Exception ex) {
LOG.info(String.format("Parsing the incoming json object to ResponsetoA1 class: "+ response +", kafkaresponse topic: "+responseTopicName));
LOG.info(String.format(
"Invalid Message received . Exception while parsing JSON object -> %s",
ex.getLocalizedMessage()));
ex.printStackTrace();
return;
}
}
}
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