chore(websites): Setup preview site workflows

.github/actions/spelling/excludes.txt

@@ -3,6 +3,9 @@
 (?:^|/)(?i)LICEN[CS]E
 (?:^|/)3rdparty/
 (?:^|/)amplify\.yml$
+(?:^|/)build_preview_sites\.yml$
+(?:^|/)create_preview_sites\.yml$
+(?:^|/)preview_site_trigger\.yml$
 (?:^|/)go\.sum$
 (?:^|/)package(?:-lock|)\.json$
 (?:^|/)Pipfile$

.github/workflows/build_preview_sites.yml

@@ -0,0 +1,26 @@
+name: Deploy Vector Preview Sites
+
+on:
+  workflow_run:
+    workflows: ["Call Build Preview"]
+    types:
+      - completed
+
+jobs:
+  deploy_vector_preview_site:
+    uses: ./.github/workflows/create_preview_sites.yml
+    with:
+      APP_ID: "d1a7j77663uxsc"
+      APP_NAME: "vector.dev"
+
+  deploy_rust_doc_preview_site:
+    uses: ./.github/workflows/create_preview_sites.yml
+    with:
+      APP_ID: "d1hoyoksbulg25"
+      APP_NAME: "Rust Doc"
+
+  deploy_vrl_playground_preview_site:
+    uses: ./.github/workflows/create_preview_sites.yml
+    with:
+      APP_ID: "d2lr4eds605rpz"
+      APP_NAME: "VRL Playground"

.github/workflows/create_preview_sites.yml

@@ -0,0 +1,88 @@
+name: Create Preview Sites
+
+on:
+  workflow_call:
+    inputs:
+      APP_ID:
+        description: "App ID for the associated website"
+        required: true
+        type: string
+      APP_NAME:
+        description: "Application name for the comment"
+        required: true
+        type: string
+
+jobs:
+  create_preview_site:
+    runs-on: ubuntu-latest
+    steps:
+
+    # Get the artifacts with the PR number and branch name
+    - name: Download artifact
+      uses: actions/github-script@v3.1.0
+      with:
+        script: |
+          const fs = require('fs');
+          const artifacts = await github.actions.listWorkflowRunArtifacts({
+             owner: context.repo.owner,
+             repo: context.repo.repo,
+             run_id: ${{ github.event.workflow_run.id }},
+          });
+          const matchArtifact = artifacts.data.artifacts.filter(artifact => artifact.name == "pr")[0];
+          const download = await github.actions.downloadArtifact({
+             owner: context.repo.owner,
+             repo: context.repo.repo,
+             artifact_id: matchArtifact.id,
+             archive_format: 'zip',
+          });
+          fs.writeFileSync('${{ github.workspace }}/pr.zip', Buffer.from(download.data));
+
+    # Extract the info from the artifact and set variables
+    - name: Extract PR info from artifact
+      run: |
+        unzip pr.zip -d pr
+        BRANCH_NAME=$(cat ./pr/PR_INFO | grep 'Branch Name' | cut -d ':' -f 2 | xargs)
+        SANITIZED_BRANCH_NAME=$(echo "$BRANCH_NAME" | sed 's/[\/\.]/-/g')
+        echo "SANITIZED_BRANCH_NAME=$SANITIZED_BRANCH_NAME" >> $GITHUB_ENV
+
+    # Kick off the job in amplify
+    - name: Deploy Site
+      env:
+        REQUEST_TOKEN: ${{ secrets.REQUEST_TOKEN }}
+        REQUEST_MESSAGE: ${{ secrets.REQUEST_MESSAGE }}
+        ENDPOINT: ${{ secrets.BUILDER_ENDPOINT }}
+      run: |
+        HMAC_KEY=$(echo -n $REQUEST_MESSAGE | openssl dgst -sha256 -hmac "$REQUEST_TOKEN" -binary | od -An -tx1 | tr -d ' \n'; echo)
+        SIGNATURE="sha256=$HMAC_KEY"
+        RESPONSE_CODE=$(curl -s -o /dev/null -w "%{http_code}" -X POST \
+             -H "Content-Type: application/json" \
+             -H "X-Hub-Signature: $SIGNATURE" \
+             -d "{\"app_id\": \"$APP_ID\", \"branch_name\": \"$SANITIZED_BRANCH_NAME\"}" \
+          "$ENDPOINT")
+
+        # check the response code and fail if not 200
+        if [ "$RESPONSE_CODE" != "200" ]; then
+          echo "Request failed with response code $RESPONSE_CODE"
+          exit 1
+        fi
+
+    # Add preview link to comment if all 3 sites successfully start
+    - name: Comment Preview Link
+      if: success()
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      uses: actions/github-script@v3
+      with:
+        script: |
+          const prInfo = fs.readFileSync('./pr/PR_INFO', 'utf8');
+          const prInfoLines = prInfo.split('\n');
+          const issueNumber = parseInt(prInfoLines[0].split(': ')[1]);
+
+          await github.issues.createComment({
+            owner: context.repo.owner,
+            repo: context.repo.repo,
+            issue_number: issue_number,
+            body: `Your preview site for the **${APP_NAME}** will be ready in a few minutes, please allow time for it to build. \n \n Heres your preview link: \n [${APP_NAME} preview](https://${SANITIZED_BRANCH_NAME}.${APP_ID}.amplifyapp.com)`
+          });
+
+

.github/workflows/preview_site_trigger.yml

@@ -0,0 +1,27 @@
+name: Call Build Preview
+
+on:
+  pull_request:
+    types: [opened, reopened]
+
+jobs:
+  approval_check:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Echo approval
+        run: |
+          echo "Workflow has been allowed to run for PR ${{ github.event.number }}. Setting artifacts and then continuing workflow runs"
+
+      # Save the PR number and branch name to an artifact for use in subsequent jobs
+      - name: Save PR number and Branch name
+        run: |
+          mkdir -p ./pr
+          echo "PR Number: ${{ github.event.number }}" > ./pr/PR_INFO
+          echo "Branch Name: ${{ github.head_ref }}" >> ./pr/PR_INFO
+
+      # Upload the artifact
+      - name: Upload PR information artifact
+        uses: actions/upload-artifact@v2
+        with:
+          name: pr
+          path: pr/