copying scripts to prepare release (#211)

.github/workflows/publish.yml

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+name: Publish
+
+on:
+  release:
+    types: [created]
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+    - uses: actions/setup-python@v1
+      with:
+        python-version: '3.7'
+    - name: Build wheels
+      run: ./scripts/build.sh
+    - name: Install twine
+      run: |
+        pip install twine
+    # The step below publishes to testpypi in order to catch any issues
+    # with the package configuration that would cause a failure to upload
+    # to pypi. One example of such a failure is if a classifier is
+    # rejected by pypi (e.g "3 - Beta"). This would cause a failure during the
+    # middle of the package upload causing the action to fail, and certain packages
+    # might have already been updated, this would be bad.
+    - name: Publish to TestPyPI
+      env:
+        TWINE_USERNAME: '__token__'
+        TWINE_PASSWORD: ${{ secrets.test_pypi_token }}
+      run: |
+        twine upload --repository testpypi --skip-existing --verbose dist/*
+    - name: Publish to PyPI
+      env:
+        TWINE_USERNAME: '__token__'
+        TWINE_PASSWORD: ${{ secrets.pypi_password }}
+      run: |
+        twine upload --skip-existing --verbose dist/*

scripts/build.sh

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+#!/bin/sh
+
+# This script builds wheels for the API, SDK, and extension packages in the
+# dist/ dir, to be uploaded to PyPI.
+
+set -ev
+
+# Get the latest versions of packaging tools
+python3 -m pip install --upgrade pip setuptools wheel
+
+BASEDIR=$(dirname $(readlink -f $(dirname $0)))
+DISTDIR=dist
+
+(
+  cd $BASEDIR
+  mkdir -p $DISTDIR
+  rm -rf $DISTDIR/*
+
+ for d in exporter/*/ instrumentation/*/ sdk-extension/*/ ; do
+   (
+     echo "building $d"
+     cd "$d"
+     # Some ext directories (such as docker tests) are not intended to be
+     # packaged. Verify the intent by looking for a setup.py.
+     if [ -f setup.py ]; then
+      python3 setup.py sdist --dist-dir "$BASEDIR/dist/" clean --all
+     fi
+   )
+ done
+ # Build a wheel for each source distribution
+ (
+   cd $DISTDIR
+   for x in *.tar.gz ; do
+     pip wheel --no-deps $x
+   done
+ )
+)

scripts/prepare_release.sh

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+#!/bin/zsh
+#
+# This script:
+#   1. parses the version number from the branch name
+#   2. updates version.py files to match that version
+#   3. iterates through CHANGELOG.md files and updates any files containing
+#      unreleased changes
+#   4. sets the output variable 'version_updated' to determine whether
+#      the github action to create a pull request should run. this allows
+#      maintainers to merge changes back into the release branch without
+#      triggering unnecessary pull requests
+#
+
+VERSION=`echo $1 | awk -F "/" '{print $NF}'`
+echo "Using version ${VERSION}"
+
+# check the version matches expected versioning e.g
+# 0.6, 0.6b, 0.6b0, 0.6.0
+if [[ ! "${VERSION}" =~ ^([0-9])(\.*[0-9]{1,5}[a-b]*){1,3}$ ]]; then
+    echo "Version number invalid: $VERSION"
+    exit 1
+fi
+
+# create the release branch
+git checkout -b release/${VERSION}
+git push origin release/${VERSION}
+
+# create a temporary branch to create a PR for updated version and changelogs
+git checkout -b release/${VERSION}-auto
+./scripts/eachdist.py release --version ${VERSION}
+rc=$?
+if [ $rc != 0 ]; then
+    echo "::set-output name=version_updated::0"
+    exit 0
+fi
+
+git add **/version.py **/setup.cfg **/CHANGELOG.md
+
+git commit -m "updating changelogs and version to ${VERSION}"
+
+echo "Time to create a release, here's a sample title:"
+echo "[pre-release] Update changelogs, version [${VERSION}]"