2. WHO AM I?
Dejan Bosanac
• Senior Software Engineer at Red Hat
• Messaging and Integration background (ActiveMQ, Camel, Fabric8)
• Focused more on messaging and backend for IoT lately
3. AGENDA
• Describe typical IoT application
• Describe all the components and common pitfalls
• Introduce Eclipse IoT projects to the rescue
• Kura
• Hono
• Kapua
• Future
6. DEVICES
• Everything from simple sensors to small computers
• Connectivity
• Some are IP enabled
• Some have just near-range connectivity, like Bluetooth
• Variety of network protocols used (MQTT, LWM2M,…)
• Functions
• Sensors – send data – temperature sensor
• Actuators – control environment – A/C Unit
7. APPLICATIONS
• Enterprise applications, micro-services and everything in between
• Want to use data generated by devices
• Want to control devices
• Want to control the cloud environment … more about that in a minute
8. CLOUD
• Connects devices and applications
• Provides connectivity layer
• Provides security layer
• Provides device state
• Handle device data
9. PITFALLS
• Create a silo application
• Hard to upgrade and maintain
• Solution don't scale
• Security is an afterthought
10. SOLUTION
• Build well maintained open source stack
• Scalable, secure and maintainable
• Developers should focus on devices and applications
16. KURA SERVICES
• I/O Services – serial, Bluetooth, GPS, …
• Data services - Store and forward data using MQTT, Apache Camel
• Cloud services – request/reply
• Configuration service – OSGi configuration
• Web administration interface
17. KURA APPLICATION
• OSGi Bundle
• Deployed and managed by Kura
• Using Kura APIs to communicate with devices and cloud
• Apache Camel Integration
18. KURA APPLICATION
public void setCloudService(CloudService cloudService) {
cloudService = cloudService;
}
protected void activate(ComponentContext componentContext, Map<String, Object> properties) {
...
// Acquire a Cloud Application Client for this Application
cloudClient = cloudService.newCloudClient("greenhouse");
cloudClient.addCloudClientListener(this);
...
}
protected void doPublish() {
...
KuraPayload kuraPayload = new KuraPayload();
kuraPayload.addMetric("temperature", temperature);
cloudClient.publish("sensors", kuraPayload, DFLT_QOS, DFLT_RETAIN,DFLT_PRIORITY);
...
}
19. KURA CAMEL
public class MyKuraRouter extends KuraRouter {
@Override
public void configure() throws Exception {
from("timer://heartbeat").
setBody(constant("Hello")).
to("kura-cloud:myApplication/myTopic");
}
}
21. CONNECTOR
• Messaging infrastructure that connects gateways and applications
• Eclipse Kura uses MQTT
• Usually combined with message brokers like Apache ActiveMQ or Eclipse Paho
22. MQTT
• OASIS standard (v3.1.1)
• Created by IBM and Eurotech
• Lightweight
• Small network message
• Simple protocol
• Pub / Sub
• Quality of Service
• Connection failures
• Very popular in IoT scenarios
24. ECLIPSE HONO – GOALS
• Tailored general messaging for IoT solutions
• Solve recurring problems
• Provide messaging APIs for common operations
• Support multiple IoT protocols (MQTT, AMQP, LWM2M,…)
• Support any underlying messaging infrastructure
• JMS
• Kafka
25. ECLIPSE HONO – FEATURES
• Scalability
• Multi-tenancy
• Device-based security
• Multi-protocol support
26. ECLIPSE HONO – APIS
• AMPQ 1.0 based
• Defines message formats coming in and out of Hono
• Defines message exchange patterns
27. INSERT DESIGNATOR, IF NEEDED27
AMQP
• International Standard (ISO/IEC ISO 19464)
• Binary Protocol
• Rich feature set:
• conversation multiplexing
• advanced flow control
• Type system
• QoS Guarantees
• Symmetrical message exchange
• No Broker required
29. • It is not a broker
• It never owns a message
• It propagates AMQP transfer, settlement and disposition frames between endpoints
• Message based or link based routing
AMQP ROUTER
Router
/device1
/device2
30. INSERT DESIGNATOR, IF NEEDED30
AMQP ROUTER
• It can be deployed in multiple router-broker-endpoint topology
• Redundant paths
• Benefits
• Better scaling due to more focused tasks
• Smart routing can be used to partition the traffic
• Ideal candidate for gateway into the system
31. INSERT DESIGNATOR, IF NEEDED31
SCALABLE MESSAGING
• Combination of brokers and routers provides powerful tool box
• Brokers should focus on storing messages
• Routers should do the rest
• Allows for horizontal scaling topologies that can solve IoT challenges
32. ECLIPSE HONO- APIS
• Telemetry
• Command and Control
• Device Registration
• Device Lifecycle
34. ECLIPSE HONO – ARCHITECTURE
• Protocol Adapters
• Stateless
• Provide conversion to common protocols used in IoT
• MQTT
• LWM2M
• HTTP/Rest
• Clients – devices and Cloud services
• Connects using AMQP using well defined APIs
35. ECLIPSE HONO – ARCHITECTURE
Client
Client
Client
Router
Network
Hono
Server
Hono
Server
App
App
Hono
Server
Brokers
36. ECLIPSE HONO – ARCHITECTURE
• Hono server
• Stateless – can be scaled
• Validates message format
• Does device-based authentication
37. ECLIPSE HONO – ARCHITECTURE
• Router Network
• Provide connection scalability
• Routes AMQP messages through the system
• Brokers
• Any AMQP 1.0 compatible system
• Used to save persistent messages
38. ECLIPSE HONO – TECHNOLOGY
• Hono server
• Vert.x + Qpid Proton
• Spring Boot
• Docker
• Scalable and Cloud Ready!
45. ECLIPSE KAPUA - IMPLEMENTATION
• Micro-services oriented
• Pluggable service locator
• Single JVM
• OSGi
• Cloud Deployment
46. ECLIPSE KAPUA – 1.0
• MQTT based
• Apache ActiveMQ in the messaging layer
• JDBC store for services
• Elasticsearch for data store
• Single VM deployment
51. CONCLUSION
• Together Kura, Hono and Kapua will be able to answer even the most challenging IOT demands
• Lots of work ahead
• Everything open source
• Backed by big companies, like Red Hat, Eurotech, Bosch, …
• Join the effort
