// Do not edit this file (e.g. go instead to src/main/asciidoc) [![Build Status](https://travis-ci.org/spring-cloud/spring-cloud-netflix.svg?branch=master)](https://travis-ci.org/spring-cloud/spring-cloud-netflix) This project provides Netflix OSS integrations for Spring Boot apps through autoconfiguration and binding to the Spring Environment and other Spring programming model idioms. With a few simple annotations you can quickly enable and configure the common patterns inside your application and build large distributed systems with battle-tested Netflix components. The patterns provided include Service Discovery (Eureka), Circuit Breaker (Hystrix), Intelligent Routing (Zuul) and Client Side Load Balancing (Ribbon). == Features * Service Discovery: Eureka instances can be registered and clients can discover the instances using Spring-managed beans * Service Discovery: an embedded Eureka server can be created with declarative Java configuration * Circuit Breaker: Hystrix clients can be built with a simple annotation-driven method decorator * Circuit Breaker: embedded Hystrix dashboard with declarative Java configuration * Declarative REST Client: Feign creates a dynamic implementation of an interface decorated with JAX-RS or Spring MVC annotations * Client Side Load Balancer: Ribbon * External Configuration: a bridge from the Sprnig Environment to Archaius (enabls native configuration of Netflix components using Spring Boot conventions) * Router and Filter: automatic regsitration of Zuul filters,a nd a simple convention over configuration approach to reverse proxy creation == Building == Basic Compile and Test To build the source you will need to install http://maven.apache.org/run-maven/index.html[Apache Maven] v3.0.6 or above and JDK 1.7. Spring Cloud uses Maven for most build-related activities, and you should be able to get off the ground quite quickly by cloning the project you are interested in and typing ---- $ mvn install -s .settings.xml ---- NOTE: You may need to increase the amount of memory available to Maven by setting a `MAVEN_OPTS` environment variable with the value `-Xmx512m -XX:MaxPermSize=128m` The `.settings.xml` is only required the first time (or after updates to dependencies). It is there to provide repository declarations so that those do not need to be hard coded in the project poms. For hints on how to build the project look in `.travis.yml` if there is one. There should be a "script" and maybe "install" command. Also look at the "services" section to see if any services need to be running locally (e.g. mongo or rabbit). Ignore the git-related bits that you might find in "before_install" since they will be able git credentials and you already have those. If you need mongo, rabbit or redis, see the README in the [scripts demo repository](https://github.com/spring-cloud-samples/scripts) for instructions. For example consider using the "fig.yml" with [Fig](http://www.fig.sh/) to run them in Docker containers. == Documentation The spring-cloud-build module has a "docs" profile, and if you switch that on it will try to build asciidoc sources from `src/main/asciidoc`. As part of that process it will look for a `README.adoc` and process it by loading all the includes, but not parsing or rendering it, just copying it to `${main.basedir}` (defaults to `${basedir}`, i.e. the root of the project). If there are any changes in the README it will then show up after a Maven build as a modified file in the correct place. Just commit it and push the change. == Pull Requests Spring Cloud is released under the non-restrictive Apache 2.0 license, and follows a very standard Github development process, using Github tracker for issues and merging pull requests into master. If you want to contribute even something trivial please do not hesitate, but follow the guidelines below. === Sign the Contributor License Agreement Before we accept a non-trivial patch or pull request we will need you to sign the https://support.springsource.com/spring_committer_signup[contributor's agreement]. Signing the contributor's agreement does not grant anyone commit rights to the main repository, but it does mean that we can accept your contributions, and you will get an author credit if we do. Active contributors might be asked to join the core team, and given the ability to merge pull requests. === Code Conventions and Housekeeping None of these is essential for a pull request, but they will all help. They can also be added after the original pull request but before a merge. * Use the Spring Framework code format conventions. If you use Eclipse and you follow the ``Importing into eclipse'' instructions below you should get project specific formatting automatically. You can also import formatter settings using the `eclipse-code-formatter.xml` file from the `eclipse` folder. If using IntelliJ, you can use the http://plugins.jetbrains.com/plugin/6546[Eclipse Code Formatter Plugin] to import the same file. * Make sure all new `.java` files to have a simple Javadoc class comment with at least an `@author` tag identifying you, and preferably at least a paragraph on what the class is for. * Add the ASF license header comment to all new `.java` files (copy from existing files in the project) * Add yourself as an `@author` to the .java files that you modify substantially (more than cosmetic changes). * Add some Javadocs and, if you change the namespace, some XSD doc elements. * A few unit tests would help a lot as well -- someone has to do it. * If no-one else is using your branch, please rebase it against the current master (or other target branch in the main project). === Working with the code If you don't have an IDE preference we would recommend that you use http://www.springsource.com/developer/sts[Spring Tools Suite] or http://eclipse.org[Eclipse] when working with the code. We use the http://eclipse.org/m2e/[m2eclipe] eclipse plugin for maven support. Other IDEs and tools should also work without issue. === Importing into eclipse with m2eclipse We recommend the http://eclipse.org/m2e/[m2eclipe] eclipse plugin when working with eclipse. If you don't already have m2eclipse installed it is available from the "eclipse marketplace". === Importing into eclipse without m2eclipse If you prefer not to use m2eclipse you can generate eclipse project metadata using the following command: [indent=0] ---- $ mvn eclipse:eclipse ---- The generated eclipse projects can be imported by selecting `import existing projects` from the `file` menu. === Importing into other IDEs Maven is well supported by most Java IDEs. Refer to you vendor documentation.