feat: inject branch slug into SNAPSHOT version

README.md

@@ -205,6 +205,7 @@ They are bound to the `publish` stage, and use the following variables:
 | ----------------------------------- | ------------------------------------------------------------ | ----------------- |
 | `MAVEN_DEPLOY_ENABLED`              | Set to `true` to enable release and publish jobs             | _none_ (disabled) |
 | `MAVEN_DEPLOY_FROM_UNPROTECTED_DISABLED`| Set to `true` to limit snapshot publication to protected branches | _none_ (disabled) |
+| `MAVEN_DEPLOY_SNAPSHOT_WITH_SLUG_ENABLED`| Set to `true` to inject the Git branch slug in SNAPSHOT versions | _none_ (disabled) |
 | `MAVEN_DEPLOY_ARGS`                 | Maven arguments for the `mvn-deploy` job                     | `deploy -Dmaven.test.skip=true` |
 | `MAVEN_RELEASE_ARGS`                | Maven arguments for the `mvn-release` job                    | `release:prepare -DtagNameFormat=@{project.version} -Darguments=-Dmaven.test.skip=true` |
 | `MAVEN_RELEASE_VERSION`             | Explicit version to use when triggering a release | _none_ (uses the current snapshot version from `pom.xml`) |
@@ -218,6 +219,23 @@ More info:
 * [Maven Deploy Plugin](https://maven.apache.org/plugins/maven-deploy-plugin/)
 * [Maven Release Plugin](http://maven.apache.org/maven-release/maven-release-plugin/index.html)
 
+#### Inject the Git branch slug in SNAPSHOT versions
+
+In order to **segregate your SNAPSHOT versions per branch**, the Maven template allows you to add the Git branch slug into the pom version.
+Thus, any other project willing to use your SNAPSHOT packages will be able to do so, explicitly setting its dependency on the desired version (branch).
+Only the production branch (`main` or `master` by default) will be preserved from this behavior.
+
+This feature can be enabled setting `MAVEN_DEPLOY_SNAPSHOT_WITH_SLUG_ENABLED` to `true`.
+
+Example: for a project with `<version>1.2.1-SNAPSHOT</version>` in its `pom.xml`:
+
+| Branch                           | Altered version |
+| -------------------------------- | ------------------------------------------------------------ |
+| `feature/support-facebook-login` | `1.2.1-feature-support-facebook-login-SNAPSHOT` |
+| `fix/timedate-serialization`     | `1.2.1-fix-timedate-serialization-SNAPSHOT` |
+| `develop` (integration branch)   | `1.2.1-develop-SNAPSHOT` |
+| `main` (production branch)       | `1.2.1-SNAPSHOT` |
+
 #### `semantic-release` integration
 
 If you activate the [`semantic-release-info` job from the `semantic-release` template](https://gitlab.com/to-be-continuous/semantic-release/#semantic-release-info-job), the `mvn-release` job will rely on the generated next version info.

kicker.json

@@ -138,6 +138,12 @@
           "type": "boolean",
           "advanced": true
         },
+        {
+          "name": "MAVEN_DEPLOY_SNAPSHOT_WITH_SLUG_ENABLED",
+          "description": "Enable to inject the Git branch slug in SNAPSHOT versions",
+          "type": "boolean",
+          "advanced": true
+        },
         {
           "name": "MAVEN_RELEASE_ARGS",
           "description": "Maven arguments for the release job",

templates/gitlab-ci-maven.yml

@@ -396,6 +396,25 @@ stages:
     fi
   }
 
+  # only on a branch commit, with deploy and "SNAPSHOT with slug" enabled
+  function maybe_inject_slug_in_version() {
+    if [[ "$CI_COMMIT_BRANCH" ]] && [[ "$MAVEN_DEPLOY_ENABLED" == "true" ]] && [[ "$MAVEN_DEPLOY_SNAPSHOT_WITH_SLUG_ENABLED" == "true" ]]
+    then
+      # check if on non-prod branch
+      prod_ref_expr=${PROD_REF#/}
+      prod_ref_expr=${prod_ref_expr%/}
+      if [[ ! "$CI_COMMIT_BRANCH" =~ $prod_ref_expr ]]
+      then
+        # shellcheck disable=SC2086
+        pom_version=$(mvn $MAVEN_CLI_OPTS $mvn_settings_opt $java_proxy_args help:evaluate -Dexpression=project.version -q -DforceStdout | tail -n 1)
+        altered_pom_version="${pom_version%-SNAPSHOT}-${CI_COMMIT_REF_SLUG}-SNAPSHOT"
+        log_info "Inject branch slug into SNAPSHOT version: \\e[33;1m${altered_pom_version}\\e[0m..."
+        # shellcheck disable=SC2086
+        mvn $MAVEN_CLI_OPTS $mvn_settings_opt $java_proxy_args versions:set -DgenerateBackupPoms=false -DnewVersion="${altered_pom_version}"
+      fi
+    fi
+  }
+
   unscope_variables
 
   # ENDSCRIPT
@@ -423,6 +442,7 @@ mvn-build:
   extends: .mvn-base
   stage: build
   script:
+    - maybe_inject_slug_in_version
     - mvn ${TRACE+-X} $MAVEN_CLI_OPTS $mvn_settings_opt $java_proxy_args $MAVEN_BUILD_ARGS
     - output_coverage
   # code coverage RegEx
@@ -436,6 +456,8 @@ mvn-build:
       junit:
         - "${MAVEN_PROJECT_DIR}/**/target/*-reports/TEST-*.xml"
     paths:
+      # version may have been altered
+      - pom.xml
       - "${MAVEN_PROJECT_DIR}/**/target"
 
 # Sonar job