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Spring Cloud Build is a common utility project for Spring Cloud to use for plugin and dependency management.
To install locally:
$ mvn install -s .settings.xml
and to deploy snapshots to repo.spring.io:
$ mvn deploy -DaltSnapshotDeploymentRepository=repo.spring.io::default::https://repo.spring.io/snapshot
for a RELEASE build use
$ mvn deploy -DaltReleaseDeploymentRepository=repo.spring.io::default::https://repo.spring.io/release
and for jcenter use
$ mvn deploy -DaltReleaseDeploymentRepository=bintray::default::https://api.bintray.com/maven/spring/jars/org.springframework.cloud:build
and for Maven Central use
$ mvn deploy -P central -DaltReleaseDeploymentRepository=sonatype-nexus-staging::default::https://oss.sonatype.org/service/local/staging/deploy/maven2
(the "central" profile is available for all projects in Spring Cloud and it sets up the gpg jar signing, and the repository has to be specified separately for this project because it is a parent of the starter parent which users in turn have as their own parent).
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.
Before we accept a non-trivial patch or pull request we will need you to sign the Contributor License 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.
This project adheres to the Contributor Covenant code of conduct. By participating, you are expected to uphold this code. Please report unacceptable behavior to spring-code-of-conduct@pivotal.io.
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
you can import formatter settings using the
eclipse-code-formatter.xml file from the
Spring
Cloud Build project. If using IntelliJ, you can use the
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).
When writing a commit message please follow these conventions,
if you are fixing an existing issue please add Fixes gh-XXXX at the end of the commit
message (where XXXX is the issue number).
Spring Cloud Build comes with a set of checkstyle rules. You can find them in the spring-cloud-build-tools module. The most notable files under the module are:
└── src ├── checkstyle │ └── checkstyle-suppressions.xml (3) └── main └── resources ├── checkstyle-header.txt (2) └── checkstyle.xml (1)
Default Checkstyle rules
File header setup
Default suppression rules
Checkstyle rules are disabled by default. To add checkstyle to your project just define the following properties and plugins.
<properties>
<maven-checkstyle-plugin.failsOnError>true</maven-checkstyle-plugin.failsOnError> (1)
<maven-checkstyle-plugin.failsOnViolation>true
</maven-checkstyle-plugin.failsOnViolation> (2)
<maven-checkstyle-plugin.includeTestSourceDirectory>true
</maven-checkstyle-plugin.includeTestSourceDirectory> (3)
</properties>
<build>
<plugins>
<plugin> (4)
<groupId>io.spring.javaformat</groupId>
<artifactId>spring-javaformat-maven-plugin</artifactId>
</plugin>
<plugin> (5)
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-checkstyle-plugin</artifactId>
</plugin>
</plugins>
<reporting>
<plugins>
<plugin> (5)
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-checkstyle-plugin</artifactId>
</plugin>
</plugins>
</reporting>
</build>
Fails the build upon Checkstyle errors
Fails the build upon Checkstyle violations
Checkstyle analyzes also the test sources
Add the Spring Java Format plugin that will reformat your code to pass most of the Checkstyle formatting rules
Add checkstyle plugin to your build and reporting phases
If you need to suppress some rules (e.g. line length needs to be longer), then it’s enough for you to define a file under ${project.root}/src/checkstyle/checkstyle-suppressions.xml with your suppressions. Example:
<?xml version="1.0"?> <!DOCTYPE suppressions PUBLIC "-//Puppy Crawl//DTD Suppressions 1.1//EN" "https://www.puppycrawl.com/dtds/suppressions_1_1.dtd"> <suppressions> <suppress files=".*ConfigServerApplication\.java" checks="HideUtilityClassConstructor"/> <suppress files=".*ConfigClientWatch\.java" checks="LineLengthCheck"/> </suppressions>
It’s advisable to copy the ${spring-cloud-build.rootFolder}/.editorconfig and ${spring-cloud-build.rootFolder}/.springformat to your project. That way, some default formatting rules will be applied. You can do so by running this script:
$ curl https://raw.githubusercontent.com/spring-cloud/spring-cloud-build/master/.editorconfig -o .editorconfig
$ touch .springformat
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 Spring Cloud Build project.
└── src ├── checkstyle │ └── checkstyle-suppressions.xml (3) └── main └── resources ├── checkstyle-header.txt (2) ├── checkstyle.xml (1) └── intellij ├── Intellij_Project_Defaults.xml (4) └── Intellij_Spring_Boot_Java_Conventions.xml (5)
Default Checkstyle rules
File header setup
Default suppression rules
Project defaults for Intellij that apply most of Checkstyle rules
Project style conventions for Intellij that apply most of Checkstyle rules
Go to File → Settings → Editor → Code style. There click on the icon next to the Scheme section. There, click on the Import Scheme value and pick the Intellij IDEA code style XML option. Import the spring-cloud-build-tools/src/main/resources/intellij/Intellij_Spring_Boot_Java_Conventions.xml file.
Go to File → Settings → Editor → Inspections. There click on the icon next to the Profile section. There, click on the Import Profile and import the spring-cloud-build-tools/src/main/resources/intellij/Intellij_Project_Defaults.xml file.
To have Intellij work with Checkstyle, you have to install the Checkstyle plugin. It’s advisable to also install the Assertions2Assertj to automatically convert the JUnit assertions
Go to File → Settings → Other settings → Checkstyle. There click on the + icon in the Configuration file section. There, you’ll have to define where the checkstyle rules should be picked from. In the image above, we’ve picked the rules from the cloned Spring Cloud Build repository. However, you can point to the Spring Cloud Build’s GitHub repository (e.g. for the checkstyle.xml : https://raw.githubusercontent.com/spring-cloud/spring-cloud-build/master/spring-cloud-build-tools/src/main/resources/checkstyle.xml). We need to provide the following variables:
checkstyle.header.file - please point it to the Spring Cloud Build’s, spring-cloud-build-tools/src/main/resources/checkstyle-header.txt file either in your cloned repo or via the https://raw.githubusercontent.com/spring-cloud/spring-cloud-build/master/spring-cloud-build-tools/src/main/resources/checkstyle-header.txt URL.
checkstyle.suppressions.file - default suppressions. Please point it to the Spring Cloud Build’s, spring-cloud-build-tools/src/checkstyle/checkstyle-suppressions.xml file either in your cloned repo or via the https://raw.githubusercontent.com/spring-cloud/spring-cloud-build/master/spring-cloud-build-tools/src/checkstyle/checkstyle-suppressions.xml URL.
checkstyle.additional.suppressions.file - this variable corresponds to suppressions in your local project. E.g. you’re working on spring-cloud-contract. Then point to the project-root/src/checkstyle/checkstyle-suppressions.xml folder. Example for spring-cloud-contract would be: /home/username/spring-cloud-contract/src/checkstyle/checkstyle-suppressions.xml.
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Important
|
Remember to set the Scan Scope to All sources since we apply checkstyle rules for production and test sources.
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To avoid propagating build setup that is required to build a Spring Cloud project, we’re using the maven flatten plugin. It has the advantage of letting you use whatever features you need while publishing "clean" pom to the repository.
In order to add it, add the org.codehaus.mojo:flatten-maven-plugin to your pom.xml.
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>flatten-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
Spring Cloud Build publishes its spring-cloud-build-docs module that contains
helpful scripts (e.g. README generation ruby script) and css, xslt and images
for the Spring Cloud documentation. If you want to follow the same convention
approach of generating documentation just add these plugins to your docs module
<properties>
<upload-docs-zip.phase>deploy</upload-docs-zip.phase> (8)
</properties>
<profiles>
<profile>
<id>docs</id>
<build>
<plugins>
<plugin>
<groupId>pl.project13.maven</groupId>
<artifactId>git-commit-id-plugin</artifactId> (1)
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId> (2)
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId> (3)
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId> (4)
</plugin>
<plugin>
<groupId>org.asciidoctor</groupId>
<artifactId>asciidoctor-maven-plugin</artifactId> (5)
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-antrun-plugin</artifactId> (6)
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId> (7)
</plugin>
</plugins>
</build>
</profile>
</profiles>
This plugin downloads sets up all the git information of the project
This plugin downloads the resources of the spring-cloud-build-docs module
This plugin unpacks the resources of the spring-cloud-build-docs module
This plugin generates an adoc file with all the configuration properties from the classpath
This plugin is required to parse the Asciidoctor documentation
This plugin is required to copy resources into proper final destinations and to generate main README.adoc and to assert that no files use unresolved links
This plugin ensures that the generated zip docs will get published
This property turns on the "deploy" phase for <7>
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Important
|
The order of plugin declaration is important! |
In order for the build to generate the adoc file with all your configuration properties, your docs module should contain all the dependencies on the classpath, that you would want to scan for configuration properties. The file will be output to ${docsModule}/src/main/asciidoc/_configprops.adoc file (configurable via the configprops.path property).
If you want to modify which of the configuration properties are put in the table, you can tweak the configprops.inclusionPattern pattern to include only a subset of the properties (e.g. <configprops.inclusionPattern>spring.sleuth.*</configprops.inclusionPattern>).
Spring Cloud Build Docs comes with a set of attributes for asciidoctor that you can reuse.
<attributes>
<docinfo>shared</docinfo>
<allow-uri-read>true</allow-uri-read>
<nofooter/>
<toc>left</toc>
<toc-levels>4</toc-levels>
<sectlinks>true</sectlinks>
<sources-root>${project.basedir}/src@</sources-root>
<asciidoc-sources-root>${project.basedir}/src/main/asciidoc@</asciidoc-sources-root>
<generated-resources-root>${project.basedir}/target/generated-resources@
</generated-resources-root>
<!-- Use this attribute the reference code from another module -->
<!-- Note the @ at the end, lowering the precedence of the attribute -->
<project-root>${maven.multiModuleProjectDirectory}@</project-root>
<!-- It's mandatory for you to pass the docs.main property -->
<github-repo>${docs.main}@</github-repo>
<github-project>https://github.com/spring-cloud/${docs.main}@</github-project>
<github-raw>
https://raw.githubusercontent.com/spring-cloud/${docs.main}/${github-tag}@
</github-raw>
<github-code>https://github.com/spring-cloud/${docs.main}/tree/${github-tag}@
</github-code>
<github-issues>https://github.com/spring-cloud/${docs.main}/issues/@</github-issues>
<github-wiki>https://github.com/spring-cloud/${docs.main}/wiki@</github-wiki>
<github-master-code>https://github.com/spring-cloud/${docs.main}/tree/master@
</github-master-code>
<index-link>${index-link}@</index-link>
<!-- Spring Cloud specific -->
<!-- for backward compatibility -->
<spring-cloud-version>${project.version}@</spring-cloud-version>
<project-version>${project.version}@</project-version>
<github-tag>${github-tag}@</github-tag>
<version-type>${version-type}@</version-type>
<docs-url>https://docs.spring.io/${docs.main}/docs/${project.version}@</docs-url>
<raw-docs-url>${github-raw}@</raw-docs-url>
<project-version>${project.version}@</project-version>
<project-name>${docs.main}@</project-name>
</attributes>
We assume that your project contains guides under the guides folder.
.
└── guides
├── gs-guide1
├── gs-guide2
└── gs-guide3
This means that the project contains 3 guides that would correspond to the following guides in Spring Guides org.
If you deploy your project with the -Pguides profile like this
$ ./mvnw clean deploy -Pguides
what will happen is that for GA project versions, we will clone gs-guide1, gs-guide2 and gs-guide3 and update their contents with the ones being under your guides project.
You can skip this by either not adding the guides profile, or passing the -DskipGuides system property when the profile is turned on.
You can configure the project version passed to guides via the guides-project.version (defaults to ${project.version}). The phase at which guides get updated can be configured by guides-update.phase (defaults to deploy).
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