/**********************************************************************************************
* This example code is provided for illustrative purposes only and provided 'AS IS' without
* warranty of any kind.
*
* Copyright ©2014 Chrysler Group LLC. All Rights Reserved. All information contained herein is,
* and remains the property of Chrysler Group LLC and its suppliers, if any. The intellectual and
* technical concepts contained herein are proprietary to Chrysler Group LLC and its suppliers
* and may be covered by U.S. and Foreign Patents, patents in process, and are protected by trade
* secret or copyright law. Dissemination of this information or reproduction of this material is
* strictly forbidden unless prior written permission is obtained from Chrysler Group LLC.
*
* Chrysler, Jeep, Dodge, Ram, SRT, Mopar and the Pentastar logo are registered trademarks of
* Chrysler Group LLC. FIAT is a registered trademark of Fiat group Marketing & Corporate
* Communication S.p.A. used under license by Chrysler Group LLC.
*********************************************************************************************/
package com.fca.uconnect.global;
import com.amazonaws.services.iot.client.AWSIotException;
import com.amazonaws.services.iot.client.AWSIotMessage;
import com.amazonaws.services.iot.client.AWSIotMqttClient;
import com.amazonaws.services.iot.client.AWSIotQos;
import com.amazonaws.services.iot.client.AWSIotTopic;
import com.fca.uconnect.global.GlobalUconnectControl.UconnectAny;
import com.fca.uconnect.global.GlobalUconnectControl.UconnectMessage;
import com.fca.uconnect.global.GlobalUconnectExtAuth.LoginRequest;
import com.fca.uconnect.global.GlobalUconnectExtAuth.LoginResponse;
import com.google.protobuf.ByteString;
import com.google.protobuf.ExtensionRegistry;
import com.google.protobuf.InvalidProtocolBufferException;
/**
* This example class demonstrates how to use the AWS IoT mqtt client to send a Uconnect Login/Logout message to the SDP and wait for a response message.
* This code is only for reference and is furnished without warranty.....
*
* @author FCA Global V2C API Team
*
*/
public class TBMExampleForAuthorization {
private String clientId; // The clientId is unique to the device and obtained from the client X.509 certificate CN.
private ByteString sessionId; // The sessionId is assigned by the SDP to maintain a session independent of connection protocols.
private int messageId; // The messageId is a sequential number incremented and assigned to each message sent from the client.
private AWSIotMqttClient mqttClient; // The mqtt client object from the AWS IoT client library.
private boolean receivedResponse = false; // flag to wait for the response as part of this example.
private AWSIotTopic iotTopic; // The Topic object to subscribe for inbound messages.
private ExtensionRegistry extRegistry; // Google protocol buffers extension registry instance.
private Semaphore semaphore;//The semaphore object is used to wait for a response.
/**
* Constructor - initialize protocol buffer extension registry for parsing incoming Uconnect Messages.
*/
public TBMExampleForAuthorization() {
extRegistry = ExtensionRegistry.newInstance();
extRegistry.add(GlobalUconnectExtAuth.loginResponse);
this.semaphore = new Semaphore();
}
/**
* This method generates a Protocol Buffer Uconnect Message given the required inputs for Login.
* @param userId
* @param credentials
* @return
*/
public UconnectMessage getLoginReqMsg(String userId,String credentials) {
this.messageId++;
LoginRequest lr = LoginRequest.newBuilder()
.setIdentifier(userId)
.setCredentials(credentials)
.build();
UconnectMessage msg = UconnectMessage.newBuilder()
.setTimestamp(System.currentTimeMillis())
.setMessageId(messageId)
.addMessages(UconnectAny.newBuilder().
setExtension(GlobalUconnectExtAuth.loginRequest, lr))
.build();
return msg;
}
/**
* This method demonstrates connecting to the AWS IoT mqtt broker and publishing an Login message to the ULIO topic.
*/
public void process() {
mqttClient = new AWSIotMqttClient("endpoint", clientId, "awsAccessKeyId", "awsSecretAccessKey");
try {
mqttClient.connect();
iotTopic = new AWSIotTopic(clientId+"/ULIO/", AWSIotQos.QOS1) {
public void onMessage(AWSIotMessage msg) {
UconnectMessage msgIn = null;
try {
msgIn = UconnectMessage.parseFrom(msg.getPayload(),extRegistry);
} catch (InvalidProtocolBufferException e) {
}
if (msgIn.getMessages(0).hasExtension(GlobalUconnectExtAuth.loginResponse)) {
LoginResponse loginMsg = msgIn.getMessages(0).getExtension(GlobalUconnectExtAuth.loginResponse);
semaphore.unlock();// Releasing the lock as it received response
}
}
};
mqttClient.subscribe(iotTopic);
UconnectMessage msg = getLoginReqMsg("userId","password");
AWSIotMessage message = new
MessagePublisherListener("/ULIO/"+clientId,AWSIotQos.QOS1,msg.toByteArray());
mqttClient.publish(message);
this.semaphore.lock(); //Wait for response, lock thread
} catch (AWSIotException ex) {
System.out.println("Caught AWS Exception "+ex);
ex.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
/**
* Example main to launch example.
*
* @param args
*/
public static void main(String[] args) {
TBMExampleForAuthorization example = new TBMExampleForAuthorization();
example.process();
}
}
Here's an example of how Service Connects to AWS IOT MQTT for Login/Logout topics and process Login Request , send Provision Push and Logout Request.
Service Example Code (SDP):
package com.fca.uconnect.global;
import com.amazonaws.services.iot.client.AWSIotException;
import com.amazonaws.services.iot.client.AWSIotMessage;
import com.amazonaws.services.iot.client.AWSIotMqttClient;
import com.amazonaws.services.iot.client.AWSIotQos;
import com.amazonaws.services.iot.client.AWSIotTopic;
import com.fca.uconnect.global.GlobalUconnectControl.DRM;
import com.fca.uconnect.global.GlobalUconnectControl.UconnectAny;
import com.fca.uconnect.global.GlobalUconnectControl.UconnectMessage;
import com.fca.uconnect.global.GlobalUconnectExtAuth.LoginResponse;
import com.fca.uconnect.global.GlobalUconnectExtProvision.ProvisioningPush;
import com.google.protobuf.ByteString;
import com.google.protobuf.ExtensionRegistry;
public class SDPExampleForAuthorization {
private String clientId; // The clientId is unique to the device and obtained from the client X.509 certificate CN.
private ByteString sessionId; // The sessionId is assigned by the SDP to maintain a session independent of connection protocols.
private int messageId; // The messageId is a sequential number incremented and assigned to each message sent from the client.
private AWSIotMqttClient mqttClient; // The mqtt client object from the AWS IoT client library.
private AWSIotTopic iotTopic; // The Topic object to subscribe for inbound messages.
private ExtensionRegistry extRegistry; // Google protocol buffers extension registry instance.
private int correlationId = 0;// The correlationId is a sender messageId so that Sender can recognize the message once its received response.
private boolean messageReceived = false; // flag to wait for the message as part of this example.
public SDPExampleForAuthorization() {
extRegistry = ExtensionRegistry.newInstance();
extRegistry.add(GlobalUconnectExtAuth.loginRequest);
extRegistry.add(GlobalUconnectExtAuth.loginResponse);
extRegistry.add(GlobalUconnectExtProvision.provisioningPush);
}
public UconnectMessage getLoginRespMsg(int correlationId,boolean loginSuccessful) {
messageId++;
GlobalUconnectExtAuth.LoginResponse.ResponseEnum resp = null;
if(loginSuccessful)
resp = GlobalUconnectExtAuth.LoginResponse.ResponseEnum.SUCCESS;
else
resp = GlobalUconnectExtAuth.LoginResponse.ResponseEnum.NOT_AUTHORIZED;
LoginResponse loginResp = LoginResponse.newBuilder()
.setResponse(resp)
.build();
sessionId = ByteString.copyFrom(new byte[18]);
UconnectMessage msg = UconnectMessage.newBuilder()
.setTimestamp(System.currentTimeMillis())
.setSessionId(sessionId)
.setMessageId(messageId)
.setCorrelationId(correlationId)
.addMessages(UconnectAny.newBuilder().
setExtension(GlobalUconnectExtAuth.loginResponse, loginResp))
.build();
return msg;
}
public void process() {
mqttClient = new AWSIotMqttClient("endpoint", clientId, "awsAccessKeyId", "awsSecretAccessKey");
try {
mqttClient.connect();
iotTopic = new AWSIotTopic("/ULIO/#",AWSIotQos.QOS1){
public void onMessage(AWSIotMessage msg) {
try {
UconnectMessage msgIn = UconnectMessage.parseFrom(msg.getPayload(),extRegistry);
GlobalUconnectExtAuth.LoginRequest loginReqMsg = msgIn.getMessages(0).getExtension(GlobalUconnectExtAuth.loginRequest);
if (loginReqMsg.getCredentials()!=null && loginReqMsg.getIdentifier().trim().length()>0) {
correlationId=msgIn.getMessageId();
sendMessage(getLoginRespMsg(correlationId,true));
try {
Thread.sleep(1000);//simulating a delay between the login response message and pushing an updated provisioning message to the vehicle. The delay represents additional processing time to lookup the services for the use.
} catch (InterruptedException e) {
}
sendMessage(getProvisionPushMsg( sessionId));
}
} catch( Exception ex) {
ex.printStackTrace();
System.out.println("Err processing message: "+ex+", try parsing Login/Logout.");
}
}
};
mqttClient.subscribe(iotTopic);
} catch (AWSIotException e) {
System.out.println("Caught Exception "+e);
e.printStackTrace();
}
while(!messageReceived) {
try {
Thread.sleep(1000);
} catch (InterruptedException e){
}
}
}
public UconnectMessage getProvisionPushMsg(ByteString sessionId) {
messageId++;
ByteString drmFile = ByteString.copyFrom(new byte[18]);
DRM drm = DRM.newBuilder()
.setDrmFile(drmFile)
.build();
ProvisioningPush provisioningPush = ProvisioningPush.newBuilder()
.setDrm(drm)
.build();
UconnectMessage msg = UconnectMessage.newBuilder()
.setTimestamp(System.currentTimeMillis())
.setMessageId(messageId)
.addMessages(UconnectAny.newBuilder().
setExtension(GlobalUconnectExtProvision.provisioningPush, provisioningPush))
.build();
return msg;
}
public void disconnect(){
try {
mqttClient.disconnect();
} catch (AWSIotException e) {
e.printStackTrace();
}
}
public void sendMessage(UconnectMessage msg) {
final byte[] msgOut = msg.toByteArray();
new Thread(new Runnable() {
@Override
public void run() {
try {
mqttClient.publish(clientId+"/ULIO/", AWSIotQos.QOS1, msgOut);
} catch (AWSIotException e) {
System.out.println("Caught Exception "+e);
e.printStackTrace();
}
}
}).start();
}
public static void main(String[] args) {
SDPExampleForAuthorization m = new SDPExampleForAuthorization();
m.process();
}
}
The example code demonstrates how to connect with AWS IoT for publishing and subscribing to the Login/Logout topic.
Download Client Example Code here
Download Service Example Code here