A Maven-based provisioning mechanism and replacement for the maven-assembly-plugin.
- Support for building runtimes, like the maven-assembly-plugin, that are aware of their dependencies in a multi-module build
- Support for hardlinking in TAR archives with corresponding support for dereferencing hardlinks when unpacking archives
- Support for excluding artifacts while resolving a specific artifact
- Support for globally excluding artifacts while transitively resolving artifacts
- Support for filtering resources while unpacking archives
- Support for Mustache filtering resources while unpacking archives
- Support for deleting an artifact out of an archive on the fly
- Support for inserting artifacts into archives on the fly
- Support for standard addition of files to a runtime
- Support for automatic exclusions in parent/child artifactSet relationships
- Support for generating dependencies for pom.xml
Provisio was originally created for the Presto project to provide a common way to build Presto plugins and build the Presto Server. You'll notice how small the Presto Server pom.xml is even though, at the time of this writing, there are 30+ plugins packaged in the Presto Server build as per the Provisio descriptor. As you'll read below, you only need to specify what you need in the Provisio descriptor and Maven will figure out the rest, correctly, without having to pollute your pom.xml with duplicated dependendency declarations.
To use Provisio declare its use in your project's pom.xml and be sure to set the packaging to provisio and enable the plugin as an extension. Provisio implements a Maven LifecycleParticipant that inspects all the artifacts used in your runtime descriptor and will order your build accordingly. You might notice below the conspicuous lack of a dependencies section: you do not need to include a dependency in your pom.xml for an artifact produced in the current build to have it be included in your runtime. Provisio will find all the artifact references in your runtime descriptor, determine the correct build ordering, and instruct Maven to make the necessary changes.
<project>
<groupId>ca.vanzyl.ollie</groupId>
<artifacId>ollie-server</artifacId>
<version>1.0.0-SNAPSHOT</version>
<packaging>provisio</packaging>
<build>
<plugins>
<plugin>
<groupId>ca.vanzyl.provisio.maven.plugins</groupId>
<artifactId>provisio-maven-plugin</artifactId>
<version>1.0.7</version>
<extensions>true</extensions>
<configuration>
<outputDirectory>${project.build.directory}/presto-server-${project.version}</outputDirectory>
</configuration>
</plugin>
</plugins>
</build>
</project>Below we are constructing a runtime that has some legal notices, a launcher, some libraries, and plugins. To reiterate you do not need to specify any of the artifact dependencies in your pom.xml. Provisio will see that you have ca.vanzyl.ollie:plugin-one:${project.version} in the descriptor and knows this artifact is present in your multi-module build. Provisio will make sure Maven builds ca.vanzyl.ollie:plugin-one:${project.version} first so that it can be packaged as part of this runtime build.
<runtime>
<!-- Provisio determines what archive type it's dealing with by the extension tar.gz here -->
<archive name="${project.artifactId}-${project.version}.tar.gz" />
<!-- Notices -->
<fileSet to="/">
<directory path="${basedir}">
<include>NOTICE</include>
<include>README.txt</include>
</directory>
</fileSet>
<!-- Launcher -->
<artifactSet to="/bin">
<artifact id="io.airlift:launcher:tar.gz:bin:0.124">
<unpack />
</artifact>
<artifact id="io.airlift:launcher:tar.gz:properties:0.124">
<unpack filter="true" />
</artifact>
</artifactSet>
<fileSet to="/etc">
<directory path="${basedir}/src/main/etc"/>
</fileSet>
<!-- Main -->
<artifactSet to="/lib">
<artifact id="ca.vanzyl.ollie:ollie-main:${project.version}">
</artifact>
</artifactSet>
<!-- Plugins -->
<artifactSet to="/plugins/one">
<artifact id="ca.vanzyl.ollie:plugin-one:${project.version}">
</artifact>
</artifactSet>
<artifactSet to="/plugins/two">
<artifact id="ca.vanzyl.ollie:plugin-two:${project.version}">
</artifact>
</artifactSet>
</runtime>Provisio descriptors are searched for in src/main/provisio and the runtime descriptor can be named anything provided it has an .xml extension. So src/main/provisio/server.xml or src/main/provisio/runtime.xml would be perfectly suitable names for your runtime descriptor.
What follows are various techniques and capabilities for building runtimes. Provisio is very good at working with the zip and tar.gz formats, and very good at manipulating Maven artifacts and sets of Maven artifacts.
<runtime>
<!-- Produce the archive of this runtime with duplicate JARS hardlinked -->
<archive name="presto-server-${project.version}.tar.gz" hardLinkIncludes="**/*.jar" />
<!-- Dereference hardlinks in tar.gz and exclude a directory on the fly -->
<artifactSet to="/">
<artifact id="io.prestosql:presto-server:tar.gz:${dep.presto.version}">
<unpack dereferenceHardlinks="true" useRoot="false" />
<exclude dir="plugin/hive-hadoop2" />
</artifact>
</artifactSet>
</runtime>
<runtime>
<artifactSet to="/lib">
<artifact id="org.apache.maven:maven-core:3.3.9">
<exclusion id="org.codehaus.plexus:plexus-utils"/>
<exclusion id="org.apache.maven:maven-model"/>
</artifact>
</artifactSet>
</runtime><runtime>
<artifactSet to="/lib">
<exclusion id="org.codehaus.plexus:plexus-utils"/>
<exclusion id="org.apache.maven:maven-model"/>
<artifact id="org.codehaus.modello:modello-core:1.8.3"/>
<artifact id="org.apache.maven:maven-core:3.3.9"/>
</artifactSet>
</runtime><runtime>
<artifactSet to="/">
<artifact id="ca.vanzyl:archive-with-resources-to-filter:1.0.0">
<unpack useRoot="true" filtering="true" />
</artifact>
</artifactSet>
</runtime><runtime>
<artifactSet to="/">
<artifact id="ca.vanzyl:archive-with-mustache-templates:1.0.0">
<unpack useRoot="true" mustache="true" />
</artifact>
</artifactSet>
</runtime><runtime>
<artifactSet to="/lib">
<artifact id="org.eclipse.hudson:hudson-war:war:3.3.3" as="hudson-war-3.3.3.jar">
<alter>
<delete>
<file path="/WEB-INF/lib/hudson-core-3.3.3.jar"/>
</delete>
</alter>
</artifact>
</artifactSet>
</runtime><runtime>
<artifactSet to="/lib">
<artifact id="org.eclipse.hudson:hudson-war:war:3.3.3" as="hudson-war-3.3.3.jar">
<alter>
<insert>
<artifact
id="junit:junit:4.12"
as="/WEB-INF/lib/junit-4.12.jar"/>
</insert>
</alter>
</artifact>
</artifactSet>
</runtime><runtime>
<fileSet to="/">
<directory path="${basedir}">
<include>LICENSE.txt</include>
</directory>
</fileSet>
<fileSet to="/etc">
<file path="${basedir}/src/main/etc/jvm.config"/>
<file path="${basedir}/src/main/etc/config.properties"/>
<directory path="${basedir}/src/main/etc">
<include>**/*.properties</include>
</directory>
</fileSet>
</runtime><runtime>
<!--
| Logback classic >> Logback core >> SLF4J API so we expect the following
| shape:
|
| lib/
| logback-classic
| ext/
| logback-core
| slf4j-api
|
| In this case we expect logback core to act as an exclude in the parent
| artifact set so that it will only be resolve in the child artifact set.
-->
<artifactSet to="lib">
<artifact id="ch.qos.logback:logback-classic:${logbackVersion}"/>
<artifactSet to="ext">
<artifact id="ch.qos.logback:logback-core:${logbackVersion}"/>
</artifactSet>
</artifactSet>
</runtime>If you do need all the dependencies to be defined in pom.xml, for example to use other Maven plugins that process them, use the generate Mojo to avoid having to manage them manually:
mvn provisio:generateDependencies -DdependencyExtendedPomLocation=pom-generated.xml
Without -DpomFile=pom-generated.xml, dependencies would be added to the existing pom.xml, but it won't preserve any comments.
To only check if the pom.xml file is already up to date, run:
mvn provisio:verifyDependencies
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