Adding release tags automatically based on semVer versioning whenever we merge a branch into master?

[Vishal Kashi]

I want to add git tags to when I merge a PR into my master branch. Is there any better way to do this ? 
Currently I was looking in bitbucket pipeline but I don't know how to run the script when we have a merge commit and also to conditionally create the version name based on the branch name.

Let's say out version is like major.minor.patch then if the branch name is feature/ I will bump the minor version if it's fix/ I will bump the patch version.

currently I am trying to do this using this script below but I don't know how to get the branch name I am merging into master $BITBUCKET_BRANCH gives me master and not the feature/ branch

pipelines:

branches:

master:

 - step:

name: Version and build

script:

 - echo "Made a change in build ${BITBUCKET_BUILD_NUMBER}" >> changes.txt

 - git add changes.txt

 - git commit -m "Updating changes.txt with latest build number."

 - BRANCH_NAME=$(echo ${BITBUCKET_PR_DESTINATION_BRANCH} | sed 's/\//./g')

 - echo $BITBUCKET_PR_DESTINATION_BRANCH

 - echo $BITBUCKET_BRANCH

 - LAST_TAG=$(git describe --tags $(git rev-list --tags --max-count=1))

 - echo $LAST_TAG

 - MAJOR=$(echo $LAST_TAG | awk -F "." '{print $1}')

 - MINOR=$(echo $LAST_TAG | awk -F "." '{print $2}')

 - PATCH=$(echo $LAST_TAG | awk -F "." '{print $3}')

 - echo $MAJOR

 - echo $MINOR

 - echo $PATCH

 - if [ "$BRANCH_NAME" == "feature.*" ]; then NEW_TAG="$MAJOR.$(($MINOR + 1)).0"

 - else NEW_TAG="$MAJOR.$MINOR.$(($PATCH + 1))"

 - fi

 - echo $NEW_TAG

 - git tag -am "Tagging for release ${NEW_TAG}" ${NEW_TAG}

 - git push origin ${NEW_TAG}

If there is any other better way to do this automated versioning it will be helpful too.

[Igor Stoyanov]

@Vishal Kashi hi. Try this:

git-release.sh file context

#!/usr/bin/env bash

# Release new git version

set -ex

##
# Step 1: Get version tag
##
tag=$(semversioner current-version)

##
# Step 2: Commit back to the repository
##
echo "Committing updated files to the repository..."
git add .
git commit -m "Update files for new version '${tag}' [skip ci]"
git push origin "${BITBUCKET_BRANCH}"

Add this to your yaml file:

script:
- pip install semversioner
- ./git-release.sh

Before run pipeline you should use semversioner for semantic versioning. Check this docs for more details.

Example with semversioner tool:

You should have `.semversioner` folder;

Then add the change:

semversioner add-change --type patch --description "Fix security vulnerability with authentication."

Then run your pipeline with script above.


Regards, Igor