GitLab-CI get pom version in pipeline

Question

I'd like to build docker image via gitlab CI with project's version as a tag:

docker build -t dockerimage:VERSION-IN-POM .

In jenkins' pipeline i'm getting the version like that:

${pom.version}

Is it possible to read the version in a similar, convenient way from gitlab CI? Or do I have to write scripts for that?

Answer 1

Assuming you have maven in build environment, you could use maven help plugin and grep to extract version.

VERSION=$(mvn --non-recursive help:evaluate -Dexpression=project.version | grep -v '\[.*')
echo $VERSION

Answer 2

Gitlab-CI doesn't offer such comforts, instead it offers you to do whatever you want with the shell script. It's not very hard to do it in command script. You can install xmllint (apt install libxml2-utils on Ubuntu) and then you can get it by a simple query:

xmllint --xpath '/*[local-name()="project"]/*[local-name()="version"]/text()' pom.xml

So it can all be solved by these two lines:

- apt install libxml2-utils
- docker build -t dockerimage:$(xmllint --xpath '/*[local-name()="project"]/*[local-name()="version"]/text()' pom.xml) .

Answer 3

This work for my variable: gitlab-ci.yml

mvn -Dexec.executable='echo' -Dexec.args='${project.version}' --non-recursive exec:exec -q

Answer 4

You can use sed or grep.

It's faster than using mvn --non-recursive help:evaluate ...

Get the artifactID

grep -m1 '<artifactId>' pom.xml | grep -oP  '(?<=>).*(?=<)'

Get the version

grep -m1 '<version>' pom.xml | grep -oP  '(?<=>).*(?=<)'

If you are using docker, some images don't have newest version of grep, so you need to use come creative solution with cut, example:

grep -m1 '<artifactId>' pom.xml |cut -d '<' -f2  |cut -d '>' -f2 

Answer 5

Another maven command line alternative to get directly get the version information

mvn --non-recursive help:evaluate -Dexpression=project.version -q -DforceStdout

Answer 6

if you know the project name, here is another approach using shell; is to cut the version from the target .jar file created under ./target directory.

Note: This will work only after successful build commands:

   cd target
   version=`ls <PROJECT_NAME>*.jar`
   version=${version#<PROJECT_NAME>} 
   version=${version%.jar}
   cd ..
   echo $version

<PROJECT_NAME> is the name of the project (use without <> marks)

Answer 7

You can use the below command in your .gitlab-ci.yml file :

VERSION=$(mvn --non-recursive help:evaluate -Dexpression=project.version -q -DforceStdout)

echo $VERSION

Furthermore you can get groupId and artifactId by changing Dexpression=project.version to Dexpression=project.artifactId and Dexpression=project.groupId

For more information see the maven documentation for help:evaluate.

Answer 8

As indicated by Ivan in his post, this worked in my script:

-RELEASE_VERSION=xmllint --xpath '/*[local-name()="project"]/*[local-name()="version"]/text()' pom.xml

-echo $RELEASE_VERSION

Answer 9

I ended up using

vars:
  stage: prepare
  script:
    - echo "POM_VERSION=$(mvn -Dexec.executable='echo' -Dexec.args='${project.version}' --non-recursive exec:exec -q)" > vars.env
    - echo "POM_NAME=$(mvn -Dexec.executable='echo' -Dexec.args='${project.name}' --non-recursive exec:exec -q)" >> vars.env
    - echo "POM_GROUP_ID=$(mvn -Dexec.executable='echo' -Dexec.args='${project.groupId}' --non-recursive exec:exec -q)" >> vars.env
    - echo "POM_ARTIFACT_ID=$(mvn -Dexec.executable='echo' -Dexec.args='${project.artifactId}' --non-recursive exec:exec -q)" >> vars.env
  artifacts:
    reports:
      dotenv: vars.env