spring-integration-samples/dsl/si4demo

Spring Integration 4.0/4.1 Java Config/DSL Demo

This sample is the demo used in the Spring Integration 4.0 Webinar and SpringOne/2GX 2014.

There are two demo applications from the webinar:

org.springframework.integration.samples.javaconfig.annotations.Application is a Spring Boot application using Spring Integration 4.0 Java configuration features.

org.springframework.integration.samples.javaconfig.dsl.Application is the equivalent application using the new Java DSL that is currently being developed in the extensions github repository

In both cases, you can use Telnet or curl to search twitter

$ telnet localhost 9876
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
#springintegration
[{"extraData":{},"id":461548132401438720,"text":"RT @gprussell: Spring Integration 4.0.0.RELEASE is out! ...

$ curl http://localhost:8080/foo -H"content-type:text/plain" -d '#springintegration'
[{"extraData":{},"id":461548132401438720,"text":"RT @gprussell: Spring Integration 4.0.0.RELEASE is out! ...

The DSL version also accepts typing in a hashtag for the search in the console. The DSL version also adds a filter to only allow hashtags starting with #spring, and only returns the first tweet.

Twitter now requires authentication to perform searches; visit the twitter developer site to set up the application and enter the keys/secrets in application.yml on the classpath. An 'empty' yaml file is provided in _src/main/resources:

twitter:
  oauth:
    consumerKey:
    consumerSecret:
    accessToken:
    accessTokenSecret:

SpringOne/2GX 2014

Additional examples were added to this project at SpringOne2GX 2014 - see the springone package.

This demonstrates moving from completely XML configuration, through Java Configuration, and ultimately to the DSL.

AXML

This example is pure XML - it's a simple flow...

gateway -> transformer -> service-activator

The transformer concatentates the payload to itself (String), the service upper cases the payload. The result is returned to the gateway. "foo" becomes "FOOFOO".

BXMLAndPojo

This takes the same example and shows how to configure it using "classic" Spring Integration annotations, available since 2.0.

CNoXML

This takes the same example and configures it using standard Java Configuration (available since 4.0). Many of the standard annotations are now available on @Bean definitions; note that the output channel must be configured on the handler, not the annotation. @IntegrationComponentScan detects @MessagingGateway interfaces and creates gateways.

DBoot

This takes the same example as C... and configures it using Spring Boot. The configuration is slightly more concise.

Note: Other applications in this project use the embedded web server (for http adapters). The boot apps in this section disable the embedded server by using the SpringApplicationBuilder ...

			new SpringApplicationBuilder(DBoot.class)
				.web(false)
				.run(args);

EDSL

This takes the same example and configures it using the Spring Integration Java DSL. It requires Spring Integration 4.1.0.M1 and DSL 1.0.0.M3.

FMail

This adds a recipient list router and sends a copy of the payload to an SMTP Email server (add credentials to application.yml).

GIMAP

This is a separate application that demonstrates the DSL configuring an IMAP idle channel adapter, to receive emails sent by FEmail.