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Spring Integration

Done Bootifully By Glenn Renfro

@cppwfs

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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.

Spring Boot

• 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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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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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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Data Flow

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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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Lets setup our integration to write to a file.

• Setup the CoinBase http outbound gateway.

• Setup our Main application

• Setup the Transform

• Setup the BitStamp http outbound gateway

• Setup the MQTT outbound-channel-adapter

4.0

4.1

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• 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.

4.1 MQTT Features

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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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Now lets setup the MQTT Listener

• Setup build.gradle

• Setup Integation.xml

• Setup the Main

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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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Just a little bit more

• Profiles

• Actuator

• JMX

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Learn More. Stay Connected

grenfro@gopivotal.com git@github.com:cppwfs/webcastbitcoin.git

git@github.com:cppwfs/webcastmqtt.git

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