update-instrumentations-release.yml

# This workflow releases all instrumented packages updated to point to the latest core module.
# It should run in the main branch after the PR created by the `Go Tracer Release` workflow is merged to main.

name: Release all updated instrumentations

on:
  pull_request:
    branches:
    - main
    types:
      - closed

jobs:
  release_instrumentations:
    name: Release instrumentations
    runs-on: ubuntu-latest
    if: github.event.pull_request.merged == true && startsWith(github.event.pull_request.head.ref, 'update-instrumentations-core')
    steps:
    - uses: actions/checkout@v3
      name: Checkout repo
      with:
        fetch-depth: 0
        ssh-key: ${{secrets.PRIVATE_KEY_GO_TRACER_RELEASE}}
    - name: Release all packages
      id: release-packages
      run: |
        CORE_TAG=$(git tag -l "v1.*" | sort -V | tail -n1)

        git config user.name "IBM/Instana/Team Go"
        git config user.email "github-actions@github.com"

        EXCLUDED_DIRS="\/.*\/example"

        LIB_LIST=$(find ./instrumentation -name go.mod -exec dirname {} \; | grep -E -v "$EXCLUDED_DIRS")

        TAGS=""
        for lib in $LIB_LIST
          do LIB_PATH="$(echo "$lib" | sed 's/\.\///')"

          # Expected to find something like: instrumentation/instaredis/v1.5.0
          # This option will be used if the instrumentation has no v2 subfolder
          TAG_TO_SEARCH="$LIB_PATH/v[0-1].*"

          # Expected to identify packages with subfolders. eg: instrumentation/instaredis/v2
          NEW_VERSION_FOLDER=$(echo "$lib" | grep -E "/v[2-9].*")

          # If NEW_VERSION_FOLDER has something we update TAG_TO_SEARCH
          if [ -n "$NEW_VERSION_FOLDER" ]; then
            # Expected to be a version. eg: 1.5.0
            NEW_MAJOR_VERSION=$(echo "$NEW_VERSION_FOLDER" | sed "s/.*v//")

            # Expected to be tag name with major version higher than 1. eg: instrumentation/instaredis/v2.1.0
            PATH_WITHOUT_V=$(echo "$LIB_PATH" | sed "s/\/v[0-9]*//")
            TAG_TO_SEARCH="$PATH_WITHOUT_V/v$NEW_MAJOR_VERSION.*"
          fi

          VERSION=$(git tag -l "$TAG_TO_SEARCH" | sort -V | tail -n1 | sed "s/.*v//")

          if [ -z "$VERSION" ]; then
            VERSION="0.0.0"
          fi

          MINOR_VERSION=$(echo "$VERSION" | sed -En 's/[0-9]+\.([0-9]+)\.[0-9]+/\1/p')
          MAJOR_VERSION=$(echo "$VERSION" | sed -En 's/([0-9]+)\.[0-9]+\.[0-9]+/\1/p')
          MINOR_VERSION=$((MINOR_VERSION+1))
          NEW_VERSION="$MAJOR_VERSION.$MINOR_VERSION.0"

          # Updates the minor version in version.go
          sed -i -E "s/[0-9]+\.[0-9]+\.[0-9]+/${NEW_VERSION}/" "$lib"/version.go | tail -1

          # Tags to be created after version.go is merged to the main branch with the new version
          PATH_WITHOUT_V=$(echo "$LIB_PATH" | sed "s/\/v[0-9]*//")
          TAGS="$TAGS $PATH_WITHOUT_V/v$MAJOR_VERSION.$MINOR_VERSION.0"
        done

        echo "TAGS=$TAGS" >> "$GITHUB_OUTPUT"

        # Commit all version.go files to the main branch
        git add ./instrumentation/**/version.go
        git add ./instrumentation/**/**/version.go
        git commit -m "Updated instrumented packages with core module $CORE_TAG"
        git push origin @

        echo "Creating tags for each instrumentation"

        for t in $TAGS
          do git tag "$t" && git push origin "$t"
        done

        # Release every instrumentation
        for t in $TAGS
          do gh release create "$t" \
          --title "$t" \
          --notes "Updated instrumentation with the latest version of go-sensor core module $CORE_TAG.<br/><br/> --auto-generated--"
        done
      shell: bash {0}
      env:
        GH_TOKEN: ${{ github.token }}

    - name: Update pkg.go.dev
      run: |
        #!/bin/bash

        mkdir dummy && cd dummy
        go mod init example.com
        echo "get packages..."

        for t in ${{ steps.release-packages.outputs.TAGS }}
          do go get github.com/instana/go-sensor/$(echo "$t" | sed 's/\/v/@v/') || echo "Error getting package $t, but moving forward..."
        done

        cd ..
        rm -rf dummy