Sample application for Tinkoff Java Meetup (May 17, 2018) to showcase some basic concepts of Spring Integration framework and its Java DSL.

The application is built upon Spring Boot and Spring Integration frameworks. As a test business case it performs the following actions:

• queries for new posts in Spring Engineering blog (Atom feed) by schedule and then, for every fetched blog post:
• extracts the most mentioned Spring project name (e.g. Boot, Cloud, Framework);
• searches Twitter for tweets about extracted Spring project for last week;
• converts every tweet into simple (reduced) model;
• for original (non-retweeted) tweets:
  • saves them to embedded (in-memory) H2 database;
• for retweets:
  • converts tweet reduced model into JSON;
  • chooses a filename basing on extracted Spring project name (e.g. boot.txt, cloud.txt);
  • saves retweets to the chosen file in work/retweets directory in appending mode.

• H2 web console is available at http://localhost:8080/h2-console. Use the following credentials to login:
  JDBC URL: jdbc:h2:mem:testdb;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=false
  User name: sa
  No password (leave empty)
• There are 5 commits in repository that correspond to main steps described above. The application is fully runnable on every one of them. Each commit is tagged with Step_x tag, where x is from 1 to 5.
• The repository includes Twitter cosumer key and secret to facilitate tweets searching on behalf of Sprintegration application. These credentials are issued under Toparvion Twitter account and granted with read-only access. You may use them to play with the sample as-is. But please do provide your own credentials if you develop your own application basing on this sample. Registering a new application in Twitter (and acquiring its key and secret) is very easy: https://apps.twitter.com/app/new. The credentials provided here may be revoked at any time without preliminary notification.

• JDK 9 or higher
• Git

First, clone the repository. Then navigate to the cloned repository dir and execute:

gradlew build

gradlew bootRun

or (after successful build)

java -jar build\libs\sprintegration-0.0.1-SNAPSHOT.jar

MIT. See LICENSE