With the increase in the number of devices that emit information it has become ever more important to be able to retrieve this data and process accordingly. In response to this need, MQTT has become the defacto lightweight transport for connecting an "Internet of things". With that being said, how do your applications support for eventing, messaging, and scheduling? Utilizing Spring Boot and Spring Integration you will see how to create an application with a scheduler that will retrieve data from a web service, cleanse and emit the data via MQTT. Then you'll see how to create an application, also written using Spring Boot and Spring Integration, that will capture the MQTT events and record the results. From this discussion you can see how to use these tools and take advantage of them for your own big data projects as soon as you return to the office.

1. Spring Integration
Done Bootifully
By Glenn Renfro
@cppwfs
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2. Spring Boot
Takes an opinionated view of building production-ready Spring
applications. Spring Boot favors convention over configuration and is
designed to get you up and running as quickly as possible.
• Create stand-alone Spring applications
• Embed Tomcat or Jetty directly (no need to deploy WAR files)
• Opinionated 'starter' POMs
• Automatically configure Spring whenever possible
• Absolutely no code generation and no requirement for XML configuration
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3. Spring Integration
Extends the Spring programming model to support the well-known Enterprise
Integration Patterns.
• Spring Integration enables lightweight messaging and supports integration with
external systems.
• Adapters provide a higher-level of abstraction over Spring's support for remoting,
messaging, and scheduling.
• ReST/HTTP
• SFTP/FTP
• RabbitMQ
• JMS
• TCP/UDP
• Spring Integration's primary goal is to provide a simple model for building enterprise
integration solutions while maintaining the separation of concerns that is essential
for producing maintainable, testable code.
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4. Agenda
• Create a SI application
– that gathers bid data from various bitcoin banks and markets.
– Translate data
– Send data MQTT Client
• Create MQTT Client
– Create a basic application to receive MQTT messages
– Report to console what was received
– Count total messages received.
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5. Data Flow
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6. The Tools
• Your Favorite Editor
• Gradlew
• Git (Optional)
• RabbitMQ Need port 1883
• rabbitmq-plugins enable rabbitmq_mqtt
The Libraries
• Spring Boot
• Spring Integration
• Jackson
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7. Lets setup our integration to write to a file.
• Setup the CoinBase http outbound gateway.
• Setup our Main application
4.0
• Setup the Transform
• Setup the BitStamp http outbound gateway
• Setup the MQTT outbound-channel-adapter
4.1
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8. Unless otherwise indicated, these slides are © 2013-2014 Pivotal Sof tware, Inc. and licensed under a
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9. Unless otherwise indicated, these slides are © 2013-2014 Pivotal Sof tware, Inc. and licensed under a
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10. Unless otherwise indicated, these slides are © 2013-2014 Pivotal Sof tware, Inc. and licensed under a
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11. 4.1 MQTT Features
• Async Sends
• HA Omit the url and use the serverURIs from
theDefaultMqttPahoClientFactory
• Supports QoS for each subscription
• Programmatically subscribe and unsubscribe from topics at
runtime.
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12. Security
• Does MQTT support security?
– MQTT supports Authentication
• Pass a user name and password with an MQTT packet as of
version 3.1
– Independently setup SSL
• But that can be heavy
– Application encrypts/decrypts the data
• Authorization?
• World Peace?
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13. Now lets setup the MQTT Listener
• Setup build.gradle
• Setup Integation.xml
• Setup the Main
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14. The Gradle File
buildscript {
repositories {
maven { url "http://repo.spring.io/libs-snapshot" } mavenLocal() }
dependencies {
classpath("org.springframework.boot:spring-boot-gradle-plugin:1.1.5.RELEASE”) }
}
…
apply plugin: 'spring-boot'
…
dependencies {
compile("org.springframework.boot:spring-boot-starter-integration")
compile("com.fasterxml.jackson.core:jackson-databind")
compile "org.springframework.integration:spring-integration-mqtt:4.0.3.RELEASE"
testCompile("junit:junit")
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}

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16. Just a little bit more
• Profiles
• Actuator
• JMX
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17. Learn More. Stay Connected
grenfro@gopivotal.com git@github.com:cppwfs/webcastbitcoin.git
git@github.com:cppwfs/webcastmqtt.git
@springcentral | spring.io/video
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