Add action of version update and add it to workflow

Signed-off-by: jparisu <[email protected]>

.github/workflows/pr_test.yml

@@ -7,10 +7,8 @@ on:
 
 jobs:
 
-  dummy:
+  version-update:
     runs-on: ubuntu-22.04
     steps:
-      - name: Do nothing yet
-        shell: bash
-        run: |
-          echo "ToDo"
+      - name: Check wether the versions.md file have been updated
+        uses: eProsima/eProsima-CI/ubuntu/check_version_update@main

ubuntu/check_version_update/action.yml

@@ -0,0 +1,45 @@
+name: check_version_update
+description: Check if version file has been updated with the change in the repository
+
+inputs:
+
+  version-file-path:
+    description: The path to the file to check for changes from repository base
+    required: true
+    default: versions.md
+
+  head-ref:
+    description: Git reference to compare file
+    required: false
+    default: ${GITHUB_HEAD_REF}
+
+  base-ref:
+    description: Git reference to compare against
+    required: false
+    default: ${GITHUB_BASE_REF}
+
+runs:
+  using: composite
+  steps:
+
+    - name: Sync repository
+      uses: eProsima/eProsima-CI/external/checkout@main
+      with:
+        path: ${{ github.workspace }}
+
+    - name: Fetch all branches and tags
+      uses: eProsima/eProsima-CI/ubuntu/git_fetch_all@main
+      with:
+        workspace: ${{ github.workspace }}
+
+    - name: Get diff file of version file
+      id: git-diff
+      uses: eProsima/eProsima-CI/ubuntu/git_diff@main
+      with:
+        file-path: ${{ github.workspace }}/${{ inputs.version-file-path }}
+
+    - name: Check if file change
+      if: ${{ steps.git-diff.outputs.have-changes == 'false' }}
+      run: |
+        echo "Version file ${{ inputs.version-file-path }} has not been updated."
+        exit 1

ubuntu/git_diff/action.yml

@@ -0,0 +1,61 @@
+name: git_diff
+description: Check whether a file in a repository has changed and return diff file
+
+inputs:
+
+  file-path:
+    description: The path to the file to check for changes
+    required: true
+
+  head-ref:
+    description: Git reference to compare file
+    required: false
+    default: ${GITHUB_HEAD_REF}
+
+  base-ref:
+    description: Git reference to compare against
+    required: false
+    default: ${GITHUB_BASE_REF}
+
+  diff-args:
+    description: Additional arguments to pass to the git diff command
+    required: false
+    default: ''
+
+  result-file:
+    description: Additional arguments to pass to the git diff command
+    required: false
+    default: '${{ github.workspace }}/git.diff'
+
+outputs:
+
+  diff-file-result:
+    description: The path to the file containing the diff, if changes were detected
+
+  have-changes:
+    description: Whether there have been changes in such file
+
+runs:
+  using: composite
+  steps:
+
+    - name: get_git_diff_files
+      shell: bash
+      run: |
+
+        echo "::group::Get git modifications of file ${{ inputs.file-path }}""
+
+        if git diff --name-only "${{ inputs.base-ref }}" "${{ inputs.head-ref }}" ${{ inputs.diff-args }} | grep -q "${{ inputs.file-path }}"; then
+
+          git diff "${{ inputs.base-ref }}" "${{ inputs.head-ref }}" ${{ inputs.diff-args }} "${{ inputs.file-path }}" > "${{ inputs.result-file }}"
+
+          echo "::set-output name=diff-file-result::$(cat ${{ inputs.result-file }})"
+          echo "::set-output name=have-changes::true"
+
+        else
+
+          echo "::set-output name=have-changes::false"
+
+        fi
+
+        echo "::endgroup::"