Add samples release automation (#499)

* Adding samples release automation

* bug

* nit

* nit

* nit

* PR

* PR

* PR

(cherry picked from commit fd84726)

.github/scripts/release-samples.sh

@@ -0,0 +1,42 @@
+# ------------------------------------------------------------
+# Copyright 2023 The Radius Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#    
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ------------------------------------------------------------
+
+set -xe
+
+VERSION_NUMBER=$1 # (e.g. 0.1.0)
+REPOSITORY="samples"
+
+if [[ -z "$VERSION_NUMBER" ]]; then
+  echo "Error: VERSION_NUMBER is not set."
+  exit 1
+fi
+
+# CHANNEL is the major and minor version of the VERSION_NUMBER (e.g. 0.1)
+CHANNEL="$(echo $VERSION_NUMBER | cut -d '.' -f 1,2)"
+
+# CHANNEL_VERSION is the version with the 'v' prefix (e.g. v0.1)
+CHANNEL_VERSION="v${CHANNEL}"
+
+echo "Version number: ${VERSION_NUMBER}"
+echo "Channel: ${CHANNEL}"
+echo "Channel version: ${CHANNEL_VERSION}"
+
+echo "Creating release branch for ${REPOSITORY}..."
+
+pushd $REPOSITORY
+git checkout -B "${CHANNEL_VERSION}"
+git push origin "${CHANNEL_VERSION}"
+popd

.github/workflows/release.yaml

@@ -0,0 +1,49 @@
+name: Release samples
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'Radius version number to use (e.g. 0.22.0, 0.23.0-rc1)'
+        required: true
+        default: ''
+        type: string
+
+env:
+  GITHUB_TOKEN: ${{ secrets.GH_RAD_CI_BOT_PAT }}
+  GITHUB_EMAIL: '[email protected]'
+  GITHUB_USER: 'Radius CI Bot'
+
+jobs:
+  release-samples:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          token: ${{ secrets.GH_RAD_CI_BOT_PAT }}
+          ref: edge
+          path: samples
+      - name: Configure git
+        run: |
+          git config --global user.email "${{ env.GITHUB_EMAIL }}"
+          git config --global user.name "${{ env.GITHUB_USER }}"
+      - name: Ensure inputs.version is valid semver
+        run: |
+          python ./samples/.github/scripts/validate_semver.py ${{ inputs.version }}
+      - name: Parse release channel
+        id: parse_release_channel
+        run: |
+          # CHANNEL is the major and minor version of the VERSION_NUMBER (e.g. 0.1)
+          CHANNEL="$(echo ${{ inputs.version }} | cut -d '.' -f 1,2)"
+          echo "channel=$CHANNEL" >> $GITHUB_OUTPUT
+      - name: Release samples
+        run: |
+          ./samples/.github/scripts/release-samples.sh ${{ inputs.version }}
+      - name: Change the default branch
+        run: |
+          gh api \
+          --method PATCH \
+          -H "Accept: application/vnd.github+json" \
+          -H "X-GitHub-Api-Version: 2022-11-28" \
+          /repos/project-radius/samples \
+          -f default_branch='v${{ steps.parse_release_channel.outputs.channel }}'