Automatic Git Tagging for Shared Libraries

auto-tag.sh

#!/bin/bash

# When executing in circleci, make sure a user is defined in git config
CURRENT_NAME=$(git config user.name)
if [[ -z $CUR_NAME ]]; then
  git config user.name "CI USER"
  git config user.email ci-user@companyname.biz
  echo "Git names init done."
fi

# Extract status - latest tag and prefix template
LATEST_TAG=$(git describe --tags --abbrev=0)
echo "Identified latest tag as - $LATEST_TAG"
TAG_MAJOR_PART=$(echo "${LATEST_TAG}" | cut -d"." -f1)
TAG_MINOR_PART=$(echo "${LATEST_TAG}" | cut -d"." -f2)
TAG_PATCH_PART=$(echo "${LATEST_TAG}" | cut -d"." -f3)
TMPLT_MAJOR_PART=$(cat version.prefix | cut -d"." -f1)
TMPLT_MAJOR_PART=$(cat version.prefix | cut -d"." -f2)

# If a major or minor version changed, reset patch counter
if [[ $TAG_MAJOR_PART -ne $TMPLT_MAJOR_PART || $TAG_MINOR_PART -ne $TMPLT_MAJOR_PART ]]; then
  NEW_PATCH="0"
else
  NEW_PATCH=$(expr $TAG_PATCH_PART + 1)
fi

# Tag and push
NEW_VER=$(cat version.prefix | sed "s/\#/${NEW_PATCH}/")
echo "Pushing new tag - $NEW_VER"

git tag -a $NEW_VER -m "Auto-tag created: $(date +'%Y-%m-%d_%H-%M-%S') - Prev tag ${LATEST_TAG}"
git push origin $NEW_VER

## Notify user about the newly created tag - via slack api

version.prefix

12.4.#