spike: creating branches for projects on gitlab from ansible

.gitignore

@@ -1,5 +1,6 @@
 .project
+.idea
 
 image.tar.gz
 
-.idea
+checkout

ansible-builder/bindep.txt

@@ -2,4 +2,3 @@ python38-devel [platform:rpm compile]
 subversion [platform:rpm]
 subversion [platform:dpkg]
 git-lfs [platform:rpm]
-

create-branch.yml

@@ -0,0 +1,24 @@
+- hosts: localhost
+  connection: local
+  gather_facts: false
+  vars:
+    repository: "git@git.dev-at.de:smardigo/maven/smardigo-maven-versions.git"
+    branch_type: "spike"
+    branch_ticket: "TST-0001"
+
+  pre_tasks:
+    - name: "Checkout git repository"
+      ansible.builtin.git:
+        repo: "{{ repository }}"
+        dest: "./checkout"
+        version: "master"
+
+    - name: "Insert/Update branch configuration"
+      template:
+        src: 'create-branch-maven.j2'
+        dest: './checkout/.ci_create-branch-maven'
+
+    - name: "Branching project"
+      shell: ". .ci_create-branch-maven"
+      args:
+        chdir: "./checkout"

templates/create-branch-maven.j2

@@ -0,0 +1,39 @@
+#!/bin/bash
+
+if [ -n "$(git diff-index HEAD)" ];
+then
+  echo "branch creation isn't allowed with working tree changes"
+else
+  BRANCH_CURRENT=$(git rev-parse --abbrev-ref HEAD)
+  git fetch -q
+  COMMIT_ID_BRANCH_CURRENT=$(git rev-parse $BRANCH_CURRENT)
+  COMMIT_ID_REMOTE_BRANCH_CURRENT=$(git rev-parse origin/$BRANCH_CURRENT)
+  if [ "$COMMIT_ID_BRANCH_CURRENT" != "$COMMIT_ID_REMOTE_BRANCH_CURRENT" ];
+  then
+    echo "branch creation isn't allowed with changes between $BRANCH_CURRENT and origin/$BRANCH_CURRENT"
+  else
+    TYPE={{ branch_type }}
+    TICKET={{ branch_ticket }}
+
+    BRANCH_NEXT=$TYPE/$TICKET
+
+    VERSION_LAST=$(./mvnw help:evaluate -Dexpression=project.version -q -DforceStdout)
+
+    VERSION=$(echo $VERSION_LAST | cut -d '-' -f 1)
+    VERSION_MAJOR=$(echo $VERSION_LAST | cut -d'.' -f 1)
+    VERSION_MINOR=$(echo $VERSION_LAST | cut -d'.' -f 2)
+    VERSION_BUGFIX=$(echo $VERSION_LAST | cut -d'.' -f 3)
+
+    VERSION_NEXT="${VERSION}-${TICKET}-1-SNAPSHOT"
+
+    git checkout -b $BRANCH_NEXT
+    ./mvnw versions:set -DnewVersion=$VERSION_NEXT -DgenerateBackupPoms=false
+    git commit -n -am  "created branch ${BRANCH_NEXT}"
+    git checkout ${BRANCH_CURRENT}
+    git merge -s ours -m "merge branch ${BRANCH_NEXT} into ${BRANCH_CURRENT} [skip ci]" $BRANCH_NEXT
+    git checkout $BRANCH_NEXT
+
+    git push -u origin $BRANCH_NEXT
+    git push origin $BRANCH_CURRENT
+  fi
+fi