Rename directory while building war-file with Maven - maven

Question

Question
Overall Goal
I want to build a Java WebApp (war file) where folders containing static content have a version number append to it for cachability. Renaming should happen automatically during build.
Details
The WebApp is already structured in a way that all static content is grouped together inside folders:
/lib -> All JavaScript libraries, eg /lib/angular-1.0.3 (source at src/main/webapp)
/app -> My Own Code, at the moment /app/myApp (source at src/main/webapp)
/api -> all dynamic servlets (source at src/main/java)
index.jsp -> host page that bootstraps the WebApp
Everything starting with /api and index.jsp is dynamic and not cachable at all.
Everything starting with /lib is static and versioned, thus we can set an expires header of 'access + 12 month'. Content changes require a new version number. This is easy with libraries, as they don't change much an the version number is hardcoded.
Since my own app (built with AngularJS) is also static, I want to set its expires header to 'access + 12 month', too. To do so, I need to add the current version number from Maven to the end of the folder name, thus turning /app/myApp from the source directory to /app/myApp-1.2.3 in the target directory / final war file.
POM File
<plugins>
<plugin>
<groupId>net.alchim31.maven</groupId>
<artifactId>yuicompressor-maven-plugin</artifactId>
<version>1.3.2</version>
<executions>
<execution>
<goals>
<goal>jslint</goal>
<goal>compress</goal>
</goals>
</execution>
</executions>
<configuration>
<excludeResources>true</excludeResources>
<removeIncluded>true</removeIncluded>
<suffix>.min</suffix>
<excludes>
<exclude>**/*.xml</exclude>
<exclude>**/*.properties</exclude>
<exclude>**/lib/**/*.js</exclude>
<exclude>**/lib/**/*.css</exclude>
</excludes>
<aggregations>
<aggregation>
<insertNewLine>true</insertNewLine>
<output>${project.build.directory}/${project.build.finalName}/app/myApp/js/all.min.js</output>
<includes>
<include>${project.basedir}/src/main/webapp/app/myApp/js/header.txt</include>
<include>**/*.min.js</include>
</includes>
</aggregation>
</aggregations>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.0.1</version>
<executions>
<execution>
<id>prepare-war</id>
<phase>prepare-package</phase>
<goals>
<goal>exploded</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>com.google.code.maven-replacer-plugin</groupId>
<artifactId>replacer</artifactId>
<version>1.5.2</version>
<executions>
<execution>
<phase>prepare-package</phase>
<goals>
<goal>replace</goal>
</goals>
</execution>
</executions>
<configuration>
<ignoreMissingFile>false</ignoreMissingFile>
<file>${project.build.directory}/myApp/index.jsp</file>
<replacements>
<replacement>
<token>PROJECT_VERSION</token>
<value>${project.version}</value>
</replacement>
</replacements>
</configuration>
</plugin>
I am looking for a way to copy all ressources to the target-directory, run yuicompressor, update the links and rename app/myApp to app/myApp-x.y.z
Compressing and updating the links already, but I can't find a way to rename my own app at build time.
Thanks
Solution
<plugins>
<plugin>
<groupId>net.alchim31.maven</groupId>
<artifactId>yuicompressor-maven-plugin</artifactId>
<version>1.3.2</version>
<executions>
<execution>
<goals>
<goal>jslint</goal>
<goal>compress</goal>
</goals>
</execution>
</executions>
<configuration>
<excludeResources>true</excludeResources>
<removeIncluded>true</removeIncluded>
<suffix>.min</suffix>
<failOnWarning>true</failOnWarning>
<excludes>
<exclude>**/*.xml</exclude>
<exclude>**/*.properties</exclude>
<exclude>**/lib/**/*.js</exclude>
<exclude>**/lib/**/*.css</exclude>
</excludes>
<sourceDirectory>${project.basedir}/src/main/webapp/app/myApp</sourceDirectory>
<outputDirectory>${project.build.directory}/${project.build.finalName}/app/myApp-${project.version}</outputDirectory>
<aggregations>
<aggregation>
<insertNewLine>true</insertNewLine>
<output>${project.build.directory}/${project.build.finalName}/app/myApp-${project.version}/js/all.min.js</output>
<includes>
<include>${project.basedir}/src/main/webapp/app/myApp/js/header.txt</include>
<include>**/*.min.js</include>
</includes>
</aggregation>
</aggregations>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.3</version>
<executions>
<execution>
<id>prepare-war</id>
<phase>prepare-package</phase>
<goals>
<goal>exploded</goal>
</goals>
</execution>
</executions>
<configuration>
<useCache>true</useCache>
<!-- this exclude the directory to rename from the default copy resources procedure -->
<warSourceExcludes>app/myApp/**,.idea/**</warSourceExcludes>
<!-- this will do the renaming : i.e. we specify the source directory relative to pom.xml and the target directory relative to root -->
<webResources>
<resource>
<directory>src/main/webapp/app/myApp</directory>
<excludes>
<exclude>**/*.js</exclude>
</excludes>
<targetPath>/app/myApp-${project.version}</targetPath>
</resource>
</webResources>
</configuration>
</plugin>
<plugin>
<groupId>com.google.code.maven-replacer-plugin</groupId>
<artifactId>replacer</artifactId>
<version>1.5.2</version>
<executions>
<execution>
<phase>prepare-package</phase>
<goals>
<goal>replace</goal>
</goals>
</execution>
</executions>
<configuration>
<ignoreMissingFile>false</ignoreMissingFile>
<file>${project.build.directory}/myApp/index.jsp</file>
<replacements>
<replacement>
<token>%PROJECT_VERSION%</token>
<value>${project.version}</value>
</replacement>
</replacements>
</configuration>
</plugin>
</plugins>

Answer 1

I think you can do it by configuring a <webResources> element in your maven-war-plugin config.
Doing something like this should work
<configuration>
<!-- this exclude the directory to rename from the default copy resources procedure -->
<warSourceExcludes>app/myApp/**</warSourceExcludes>
<!-- this will do the renaming :
i.e. we specify the source directory relative to pom.xml
and the target directory relative to root -->
<webResources>
<resource>
<directory>src/main/webapp/app/myApp</directory>
<!-- override the destination directory for this resource -->
<targetPath>app/myApp-${project.version}</targetPath>
</resource>
</webResources>
</configuration>
EDIT
I'm not used to work with yucompressor plugin but it seems that you can easily change the output directory through <outputDirectory> element:
<outputDirectory>${project.build.directory}/${project.build.finalName}/app/myApp-${project.version}/js/all.min.js</outputDirectory>
If all your code is in all.min.js (I think that's what the yucompressor do, but I'm not sure) : then you don't need the <webResources> section in the war plugin, but you have to keep <warSourceExcludes>app/myApp/**</warSourceExcludes> to avoid duplication.
EDIT 2
As an answer to your comment.
Try the following:
use yucompressor for *.css and *.js as indicated in previous EDIT
exclude /myapp from usual war-plugin copy resources procedure using <warSourceExcludes>app/myApp/**</warSourceExcludes>
use a webResources section to include all you non *.js and non *.css to myApp-${project.version}:
<webResources>
<resource>
<directory>src/main/webapp/app/myApp</directory>
<excludes>
<exclude>**/*.js</exclude>
<exclude>**/*.css</exclude>
</excludes>
<!-- override the destination directory for this resource -->
<targetPath>app/myApp-${project.version}</targetPath>
</resource>
</webResources>