Support for using OpenFeign in Spring Cloud apps
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<body class="book toc2 toc-left">
<div id="header">
<div id="toc" class="toc2">
<div id="toctitle">Table of Contents</div>
<ul class="sectlevel1">
<li><a href="#features">1. Features</a></li>
<li><a href="#building">2. Building</a>
<ul class="sectlevel2">
<li><a href="#basic-compile-and-test">2.1. Basic Compile and Test</a></li>
<li><a href="#documentation">2.2. Documentation</a></li>
<li><a href="#working-with-the-code">2.3. Working with the code</a></li>
</ul>
</li>
<li><a href="#contributing">3. Contributing</a>
<ul class="sectlevel2">
<li><a href="#sign-the-contributor-license-agreement">3.1. Sign the Contributor License Agreement</a></li>
<li><a href="#code-of-conduct">3.2. Code of Conduct</a></li>
<li><a href="#code-conventions-and-housekeeping">3.3. Code Conventions and Housekeeping</a></li>
<li><a href="#checkstyle">3.4. Checkstyle</a></li>
<li><a href="#ide-setup">3.5. IDE setup</a></li>
</ul>
</li>
</ul>
</div>
</div>
<div id="content">
<div id="preamble">
<div class="sectionbody">
<div class="paragraph">
<p><span class="image"><a class="image" href="https://circleci.com/gh/spring-cloud/spring-cloud-openfeign"><img src="https://circleci.com/gh/spring-cloud/spring-cloud-openfeign.svg?style=svg" alt="CircleCI"></a></span></p>
</div>
<div class="paragraph">
<p><span class="image"><a class="image" href="https://codecov.io/gh/spring-cloud/spring-cloud-openfeign"><img src="https://codecov.io/gh/spring-cloud/spring-cloud-openfeign/branch/master/graph/badge.svg" alt="Codecov"></a></span></p>
</div>
<div class="paragraph">
<p><span class="image"><a class="image" href="https://www.codacy.com/app/Spring-Cloud/spring-cloud-openfeign?utm_source=github.com&amp;utm_medium=referral&amp;utm_content=spring-cloud/spring-cloud-openfeign&amp;utm_campaign=Badge_Grade"><img src="https://api.codacy.com/project/badge/Grade/97b04c4e609c4b4f86b415e4437a6484" alt="Codacy code quality"></a></span></p>
</div>
<div class="paragraph">
<p>This project provides OpenFeign integrations for Spring Boot apps through autoconfiguration
and binding to the Spring Environment and other Spring programming model idioms.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="features"><a class="anchor" href="#features"></a><a class="link" href="#features">1. Features</a></h2>
<div class="sectionbody">
<div class="ulist">
<ul>
<li>
<p>Declarative REST Client: Feign creates a dynamic implementation of an interface decorated with JAX-RS or Spring MVC annotations</p>
</li>
</ul>
</div>
</div>
</div>
<div class="sect1">
<h2 id="building"><a class="anchor" href="#building"></a><a class="link" href="#building">2. Building</a></h2>
<div class="sectionbody">
<div class="sect2">
<h3 id="basic-compile-and-test"><a class="anchor" href="#basic-compile-and-test"></a><a class="link" href="#basic-compile-and-test">2.1. Basic Compile and Test</a></h3>
<div class="paragraph">
<p>To build the source you will need to install JDK 1.8.</p>
</div>
<div class="paragraph">
<p>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</p>
</div>
<div class="listingblock">
<div class="content">
<pre>$ ./mvnw install</pre>
</div>
</div>
<div class="admonitionblock note">
<table>
<tr>
<td class="icon">
<i class="fa icon-note" title="Note"></i>
</td>
<td class="content">
You can also install Maven (&gt;=3.3.3) yourself and run the <code>mvn</code> command
in place of <code>./mvnw</code> in the examples below. If you do that you also
might need to add <code>-P spring</code> if your local Maven settings do not
contain repository declarations for spring pre-release artifacts.
</td>
</tr>
</table>
</div>
<div class="admonitionblock note">
<table>
<tr>
<td class="icon">
<i class="fa icon-note" title="Note"></i>
</td>
<td class="content">
Be aware that you might need to increase the amount of memory
available to Maven by setting a <code>MAVEN_OPTS</code> environment variable with
a value like <code>-Xmx512m -XX:MaxPermSize=128m</code>. We try to cover this in
the <code>.mvn</code> configuration, so if you find you have to do it to make a
build succeed, please raise a ticket to get the settings added to
source control.
</td>
</tr>
</table>
</div>
<div class="paragraph">
<p>For hints on how to build the project look in <code>.travis.yml</code> 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&#8217;re related to setting git
credentials and you already have those.</p>
</div>
<div class="paragraph">
<p>The projects that require middleware generally include a
<code>docker-compose.yml</code>, so consider using
<a href="https://docs.docker.com/compose/">Docker Compose</a> to run the middeware servers
in Docker containers. See the README in the
<a href="https://github.com/spring-cloud-samples/scripts">scripts demo
repository</a> for specific instructions about the common cases of mongo,
rabbit and redis.</p>
</div>
<div class="admonitionblock note">
<table>
<tr>
<td class="icon">
<i class="fa icon-note" title="Note"></i>
</td>
<td class="content">
If all else fails, build with the command from <code>.travis.yml</code> (usually
<code>./mvnw install</code>).
</td>
</tr>
</table>
</div>
</div>
<div class="sect2">
<h3 id="documentation"><a class="anchor" href="#documentation"></a><a class="link" href="#documentation">2.2. Documentation</a></h3>
<div class="paragraph">
<p>The spring-cloud-build module has a "docs" profile, and if you switch
that on it will try to build asciidoc sources from
<code>src/main/asciidoc</code>. As part of that process it will look for a
<code>README.adoc</code> and process it by loading all the includes, but not
parsing or rendering it, just copying it to <code>${main.basedir}</code>
(defaults to <code>${basedir}</code>, 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.</p>
</div>
</div>
<div class="sect2">
<h3 id="working-with-the-code"><a class="anchor" href="#working-with-the-code"></a><a class="link" href="#working-with-the-code">2.3. Working with the code</a></h3>
<div class="paragraph">
<p>If you don&#8217;t have an IDE preference we would recommend that you use
<a href="https://www.springsource.com/developer/sts">Spring Tools Suite</a> or
<a href="https://eclipse.org">Eclipse</a> when working with the code. We use the
<a href="https://eclipse.org/m2e/">m2eclipse</a> eclipse plugin for maven support. Other IDEs and tools
should also work without issue as long as they use Maven 3.3.3 or better.</p>
</div>
<div class="sect3">
<h4 id="activate-the-spring-maven-profile"><a class="anchor" href="#activate-the-spring-maven-profile"></a><a class="link" href="#activate-the-spring-maven-profile">2.3.1. Activate the Spring Maven profile</a></h4>
<div class="paragraph">
<p>Spring Cloud projects require the 'spring' Maven profile to be activated to resolve
the spring milestone and snapshot repositories. Use your preferred IDE to set this
profile to be active, or you may experience build errors.</p>
</div>
</div>
<div class="sect3">
<h4 id="importing-into-eclipse-with-m2eclipse"><a class="anchor" href="#importing-into-eclipse-with-m2eclipse"></a><a class="link" href="#importing-into-eclipse-with-m2eclipse">2.3.2. Importing into eclipse with m2eclipse</a></h4>
<div class="paragraph">
<p>We recommend the <a href="https://eclipse.org/m2e/">m2eclipse</a> eclipse plugin when working with
eclipse. If you don&#8217;t already have m2eclipse installed it is available from the "eclipse
marketplace".</p>
</div>
<div class="admonitionblock note">
<table>
<tr>
<td class="icon">
<i class="fa icon-note" title="Note"></i>
</td>
<td class="content">
Older versions of m2e do not support Maven 3.3, so once the
projects are imported into Eclipse you will also need to tell
m2eclipse to use the right profile for the projects. If you
see many different errors related to the POMs in the projects, check
that you have an up to date installation. If you can&#8217;t upgrade m2e,
add the "spring" profile to your <code>settings.xml</code>. Alternatively you can
copy the repository settings from the "spring" profile of the parent
pom into your <code>settings.xml</code>.
</td>
</tr>
</table>
</div>
</div>
<div class="sect3">
<h4 id="importing-into-eclipse-without-m2eclipse"><a class="anchor" href="#importing-into-eclipse-without-m2eclipse"></a><a class="link" href="#importing-into-eclipse-without-m2eclipse">2.3.3. Importing into eclipse without m2eclipse</a></h4>
<div class="paragraph">
<p>If you prefer not to use m2eclipse you can generate eclipse project metadata using the
following command:</p>
</div>
<div class="listingblock">
<div class="content">
<pre>$ ./mvnw eclipse:eclipse</pre>
</div>
</div>
<div class="paragraph">
<p>The generated eclipse projects can be imported by selecting <code>import existing projects</code>
from the <code>file</code> menu.</p>
</div>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="contributing"><a class="anchor" href="#contributing"></a><a class="link" href="#contributing">3. Contributing</a></h2>
<div class="sectionbody">
<div class="paragraph">
<p>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.</p>
</div>
<div class="sect2">
<h3 id="sign-the-contributor-license-agreement"><a class="anchor" href="#sign-the-contributor-license-agreement"></a><a class="link" href="#sign-the-contributor-license-agreement">3.1. Sign the Contributor License Agreement</a></h3>
<div class="paragraph">
<p>Before we accept a non-trivial patch or pull request we will need you to sign the
<a href="https://cla.pivotal.io/sign/spring">Contributor License Agreement</a>.
Signing the contributor&#8217;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.</p>
</div>
</div>
<div class="sect2">
<h3 id="code-of-conduct"><a class="anchor" href="#code-of-conduct"></a><a class="link" href="#code-of-conduct">3.2. Code of Conduct</a></h3>
<div class="paragraph">
<p>This project adheres to the Contributor Covenant <a href="https://github.com/spring-cloud/spring-cloud-build/blob/master/docs/src/main/asciidoc/code-of-conduct.adoc">code of
conduct</a>. By participating, you are expected to uphold this code. Please report
unacceptable behavior to <a href="mailto:spring-code-of-conduct@pivotal.io">spring-code-of-conduct@pivotal.io</a>.</p>
</div>
</div>
<div class="sect2">
<h3 id="code-conventions-and-housekeeping"><a class="anchor" href="#code-conventions-and-housekeeping"></a><a class="link" href="#code-conventions-and-housekeeping">3.3. Code Conventions and Housekeeping</a></h3>
<div class="paragraph">
<p>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.</p>
</div>
<div class="ulist">
<ul>
<li>
<p>Use the Spring Framework code format conventions. If you use Eclipse
you can import formatter settings using the
<code>eclipse-code-formatter.xml</code> file from the
<a href="https://raw.githubusercontent.com/spring-cloud/spring-cloud-build/master/spring-cloud-dependencies-parent/eclipse-code-formatter.xml">Spring
Cloud Build</a> project. If using IntelliJ, you can use the
<a href="https://plugins.jetbrains.com/plugin/6546">Eclipse Code Formatter
Plugin</a> to import the same file.</p>
</li>
<li>
<p>Make sure all new <code>.java</code> files to have a simple Javadoc class comment with at least an
<code>@author</code> tag identifying you, and preferably at least a paragraph on what the class is
for.</p>
</li>
<li>
<p>Add the ASF license header comment to all new <code>.java</code> files (copy from existing files
in the project)</p>
</li>
<li>
<p>Add yourself as an <code>@author</code> to the .java files that you modify substantially (more
than cosmetic changes).</p>
</li>
<li>
<p>Add some Javadocs and, if you change the namespace, some XSD doc elements.</p>
</li>
<li>
<p>A few unit tests would help a lot as well&#8201;&#8212;&#8201;someone has to do it.</p>
</li>
<li>
<p>If no-one else is using your branch, please rebase it against the current master (or
other target branch in the main project).</p>
</li>
<li>
<p>When writing a commit message please follow <a href="https://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html">these conventions</a>,
if you are fixing an existing issue please add <code>Fixes gh-XXXX</code> at the end of the commit
message (where XXXX is the issue number).</p>
</li>
</ul>
</div>
</div>
<div class="sect2">
<h3 id="checkstyle"><a class="anchor" href="#checkstyle"></a><a class="link" href="#checkstyle">3.4. Checkstyle</a></h3>
<div class="paragraph">
<p>Spring Cloud Build comes with a set of checkstyle rules. You can find them in the <code>spring-cloud-build-tools</code> module. The most notable files under the module are:</p>
</div>
<div class="listingblock">
<div class="title">spring-cloud-build-tools/</div>
<div class="content">
<pre>└── src
<span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span><span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span> ├── checkstyle
<span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span><span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span> │<span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span><span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span> └── checkstyle-suppressions.xml <i class="conum" data-value="3"></i><b>(3)</b>
<span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span><span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span> └── main
<span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span><span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span> └── resources
<span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span><span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span> ├── checkstyle-header.txt <i class="conum" data-value="2"></i><b>(2)</b>
<span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span><span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span> └── checkstyle.xml <i class="conum" data-value="1"></i><b>(1)</b></pre>
</div>
</div>
<div class="colist arabic">
<table>
<tr>
<td><i class="conum" data-value="1"></i><b>1</b></td>
<td>Default Checkstyle rules</td>
</tr>
<tr>
<td><i class="conum" data-value="2"></i><b>2</b></td>
<td>File header setup</td>
</tr>
<tr>
<td><i class="conum" data-value="3"></i><b>3</b></td>
<td>Default suppression rules</td>
</tr>
</table>
</div>
<div class="sect3">
<h4 id="checkstyle-configuration"><a class="anchor" href="#checkstyle-configuration"></a><a class="link" href="#checkstyle-configuration">3.4.1. Checkstyle configuration</a></h4>
<div class="paragraph">
<p>Checkstyle rules are <strong>disabled by default</strong>. To add checkstyle to your project just define the following properties and plugins.</p>
</div>
<div class="listingblock">
<div class="title">pom.xml</div>
<div class="content">
<pre>&lt;properties&gt;
&lt;maven-checkstyle-plugin.failsOnError&gt;true&lt;/maven-checkstyle-plugin.failsOnError&gt; <i class="conum" data-value="1"></i><b>(1)</b>
&lt;maven-checkstyle-plugin.failsOnViolation&gt;true
&lt;/maven-checkstyle-plugin.failsOnViolation&gt; <i class="conum" data-value="2"></i><b>(2)</b>
&lt;maven-checkstyle-plugin.includeTestSourceDirectory&gt;true
&lt;/maven-checkstyle-plugin.includeTestSourceDirectory&gt; <i class="conum" data-value="3"></i><b>(3)</b>
&lt;/properties&gt;

&lt;build&gt;
&lt;plugins&gt;
&lt;plugin&gt; <i class="conum" data-value="4"></i><b>(4)</b>
&lt;groupId&gt;io.spring.javaformat&lt;/groupId&gt;
&lt;artifactId&gt;spring-javaformat-maven-plugin&lt;/artifactId&gt;
&lt;/plugin&gt;
&lt;plugin&gt; <i class="conum" data-value="5"></i><b>(5)</b>
&lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
&lt;artifactId&gt;maven-checkstyle-plugin&lt;/artifactId&gt;
&lt;/plugin&gt;
&lt;/plugins&gt;

&lt;reporting&gt;
&lt;plugins&gt;
&lt;plugin&gt; <i class="conum" data-value="5"></i><b>(5)</b>
&lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
&lt;artifactId&gt;maven-checkstyle-plugin&lt;/artifactId&gt;
&lt;/plugin&gt;
&lt;/plugins&gt;
&lt;/reporting&gt;
&lt;/build&gt;</pre>
</div>
</div>
<div class="colist arabic">
<table>
<tr>
<td><i class="conum" data-value="1"></i><b>1</b></td>
<td>Fails the build upon Checkstyle errors</td>
</tr>
<tr>
<td><i class="conum" data-value="2"></i><b>2</b></td>
<td>Fails the build upon Checkstyle violations</td>
</tr>
<tr>
<td><i class="conum" data-value="3"></i><b>3</b></td>
<td>Checkstyle analyzes also the test sources</td>
</tr>
<tr>
<td><i class="conum" data-value="4"></i><b>4</b></td>
<td>Add the Spring Java Format plugin that will reformat your code to pass most of the Checkstyle formatting rules</td>
</tr>
<tr>
<td><i class="conum" data-value="5"></i><b>5</b></td>
<td>Add checkstyle plugin to your build and reporting phases</td>
</tr>
</table>
</div>
<div class="paragraph">
<p>If you need to suppress some rules (e.g. line length needs to be longer), then it&#8217;s enough for you to define a file under <code>${project.root}/src/checkstyle/checkstyle-suppressions.xml</code> with your suppressions. Example:</p>
</div>
<div class="listingblock">
<div class="title">projectRoot/src/checkstyle/checkstyle-suppresions.xml</div>
<div class="content">
<pre>&lt;?xml version="1.0"?&gt;
&lt;!DOCTYPE suppressions PUBLIC
"-//Puppy Crawl//DTD Suppressions 1.1//EN"
"https://www.puppycrawl.com/dtds/suppressions_1_1.dtd"&gt;
&lt;suppressions&gt;
&lt;suppress files=".*ConfigServerApplication\.java" checks="HideUtilityClassConstructor"/&gt;
&lt;suppress files=".*ConfigClientWatch\.java" checks="LineLengthCheck"/&gt;
&lt;/suppressions&gt;</pre>
</div>
</div>
<div class="paragraph">
<p>It&#8217;s advisable to copy the <code>${spring-cloud-build.rootFolder}/.editorconfig</code> and <code>${spring-cloud-build.rootFolder}/.springformat</code> to your project. That way, some default formatting rules will be applied. You can do so by running this script:</p>
</div>
<div class="listingblock">
<div class="content">
<pre class="highlightjs highlight"><code class="language-bash hljs" data-lang="bash">$ curl https://raw.githubusercontent.com/spring-cloud/spring-cloud-build/master/.editorconfig -o .editorconfig
$ touch .springformat</code></pre>
</div>
</div>
</div>
</div>
<div class="sect2">
<h3 id="ide-setup"><a class="anchor" href="#ide-setup"></a><a class="link" href="#ide-setup">3.5. IDE setup</a></h3>
<div class="sect3">
<h4 id="intellij-idea"><a class="anchor" href="#intellij-idea"></a><a class="link" href="#intellij-idea">3.5.1. Intellij IDEA</a></h4>
<div class="paragraph">
<p>In order to setup Intellij you should import our coding conventions, inspection profiles and set up the checkstyle plugin.
The following files can be found in the <a href="https://github.com/spring-cloud/spring-cloud-build/tree/master/spring-cloud-build-tools">Spring Cloud Build</a> project.</p>
</div>
<div class="listingblock">
<div class="title">spring-cloud-build-tools/</div>
<div class="content">
<pre>└── src
<span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span><span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span> ├── checkstyle
<span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span><span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span> │<span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span><span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span> └── checkstyle-suppressions.xml <i class="conum" data-value="3"></i><b>(3)</b>
<span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span><span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span> └── main
<span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span><span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span> └── resources
<span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span><span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span> ├── checkstyle-header.txt <i class="conum" data-value="2"></i><b>(2)</b>
<span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span><span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span> ├── checkstyle.xml <i class="conum" data-value="1"></i><b>(1)</b>
<span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span><span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span> └── intellij
<span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span><span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span> <span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span><span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span> ├── Intellij_Project_Defaults.xml <i class="conum" data-value="4"></i><b>(4)</b>
<span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span><span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span> <span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span><span class="escaped-code-point" data-escaped="[U+00A0]"><span class="char"> </span></span> └── Intellij_Spring_Boot_Java_Conventions.xml <i class="conum" data-value="5"></i><b>(5)</b></pre>
</div>
</div>
<div class="colist arabic">
<table>
<tr>
<td><i class="conum" data-value="1"></i><b>1</b></td>
<td>Default Checkstyle rules</td>
</tr>
<tr>
<td><i class="conum" data-value="2"></i><b>2</b></td>
<td>File header setup</td>
</tr>
<tr>
<td><i class="conum" data-value="3"></i><b>3</b></td>
<td>Default suppression rules</td>
</tr>
<tr>
<td><i class="conum" data-value="4"></i><b>4</b></td>
<td>Project defaults for Intellij that apply most of Checkstyle rules</td>
</tr>
<tr>
<td><i class="conum" data-value="5"></i><b>5</b></td>
<td>Project style conventions for Intellij that apply most of Checkstyle rules</td>
</tr>
</table>
</div>
<div class="imageblock">
<div class="content">
<img src="https://raw.githubusercontent.com/spring-cloud/spring-cloud-build/master/docs/src/main/asciidoc/images/intellij-code-style.png" alt="Code style">
</div>
<div class="title">Figure 1. Code style</div>
</div>
<div class="paragraph">
<p>Go to <code>File</code> &#8594; <code>Settings</code> &#8594; <code>Editor</code> &#8594; <code>Code style</code>. There click on the icon next to the <code>Scheme</code> section. There, click on the <code>Import Scheme</code> value and pick the <code>Intellij IDEA code style XML</code> option. Import the <code>spring-cloud-build-tools/src/main/resources/intellij/Intellij_Spring_Boot_Java_Conventions.xml</code> file.</p>
</div>
<div class="imageblock">
<div class="content">
<img src="https://raw.githubusercontent.com/spring-cloud/spring-cloud-build/master/docs/src/main/asciidoc/images/intellij-inspections.png" alt="Code style">
</div>
<div class="title">Figure 2. Inspection profiles</div>
</div>
<div class="paragraph">
<p>Go to <code>File</code> &#8594; <code>Settings</code> &#8594; <code>Editor</code> &#8594; <code>Inspections</code>. There click on the icon next to the <code>Profile</code> section. There, click on the <code>Import Profile</code> and import the <code>spring-cloud-build-tools/src/main/resources/intellij/Intellij_Project_Defaults.xml</code> file.</p>
</div>
<div class="paragraph">
<div class="title">Checkstyle</div>
<p>To have Intellij work with Checkstyle, you have to install the <code>Checkstyle</code> plugin. It&#8217;s advisable to also install the <code>Assertions2Assertj</code> to automatically convert the JUnit assertions</p>
</div>
<div class="imageblock">
<div class="content">
<img src="https://raw.githubusercontent.com/spring-cloud/spring-cloud-build/master/docs/src/main/asciidoc/images/intellij-checkstyle.png" alt="Checkstyle">
</div>
</div>
<div class="paragraph">
<p>Go to <code>File</code> &#8594; <code>Settings</code> &#8594; <code>Other settings</code> &#8594; <code>Checkstyle</code>. There click on the <code>+</code> icon in the <code>Configuration file</code> section. There, you&#8217;ll have to define where the checkstyle rules should be picked from. In the image above, we&#8217;ve picked the rules from the cloned Spring Cloud Build repository. However, you can point to the Spring Cloud Build&#8217;s GitHub repository (e.g. for the <code>checkstyle.xml</code> : <code><a href="https://raw.githubusercontent.com/spring-cloud/spring-cloud-build/master/spring-cloud-build-tools/src/main/resources/checkstyle.xml" class="bare">raw.githubusercontent.com/spring-cloud/spring-cloud-build/master/spring-cloud-build-tools/src/main/resources/checkstyle.xml</a></code>). We need to provide the following variables:</p>
</div>
<div class="ulist">
<ul>
<li>
<p><code>checkstyle.header.file</code> - please point it to the Spring Cloud Build&#8217;s, <code>spring-cloud-build-tools/src/main/resources/checkstyle-header.txt</code> file either in your cloned repo or via the <code><a href="https://raw.githubusercontent.com/spring-cloud/spring-cloud-build/master/spring-cloud-build-tools/src/main/resources/checkstyle-header.txt" class="bare">raw.githubusercontent.com/spring-cloud/spring-cloud-build/master/spring-cloud-build-tools/src/main/resources/checkstyle-header.txt</a></code> URL.</p>
</li>
<li>
<p><code>checkstyle.suppressions.file</code> - default suppressions. Please point it to the Spring Cloud Build&#8217;s, <code>spring-cloud-build-tools/src/checkstyle/checkstyle-suppressions.xml</code> file either in your cloned repo or via the <code><a href="https://raw.githubusercontent.com/spring-cloud/spring-cloud-build/master/spring-cloud-build-tools/src/checkstyle/checkstyle-suppressions.xml" class="bare">raw.githubusercontent.com/spring-cloud/spring-cloud-build/master/spring-cloud-build-tools/src/checkstyle/checkstyle-suppressions.xml</a></code> URL.</p>
</li>
<li>
<p><code>checkstyle.additional.suppressions.file</code> - this variable corresponds to suppressions in your local project. E.g. you&#8217;re working on <code>spring-cloud-contract</code>. Then point to the <code>project-root/src/checkstyle/checkstyle-suppressions.xml</code> folder. Example for <code>spring-cloud-contract</code> would be: <code>/home/username/spring-cloud-contract/src/checkstyle/checkstyle-suppressions.xml</code>.</p>
</li>
</ul>
</div>
<div class="admonitionblock important">
<table>
<tr>
<td class="icon">
<i class="fa icon-important" title="Important"></i>
</td>
<td class="content">
Remember to set the <code>Scan Scope</code> to <code>All sources</code> since we apply checkstyle rules for production and test sources.
</td>
</tr>
</table>
</div>
</div>
</div>
</div>
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