fix(ci): Add script for aliasing domains in gh deployments (#6838)

Author: bracesproul

.github/scripts/deployDomainVercel.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+
+# Check if an argument is provided
+if [ $# -eq 0 ]; then
+    echo "Error: Please provide a version string as an argument."
+    exit 1
+fi
+
+inputString=$1
+
+# Check if VERCEL_TOKEN is set
+if [ -z "$VERCEL_TOKEN" ]; then
+    echo "Error: VERCEL_TOKEN is not set."
+    exit 1
+fi
+
+# save stdout and stderr to files
+vercel deploy --prebuilt --token="$VERCEL_TOKEN" >deployment-url.txt 2>error.txt
+
+# check the exit code
+code=$?
+if [ $code -eq 0 ]; then
+    # Set the deploymentUrl using the input string
+    deploymentUrl="${inputString}.api.js.langchain.com"
+    vercel alias $(cat deployment-url.txt) $deploymentUrl --token="$VERCEL_TOKEN" --scope="langchain"
+else
+    # Handle the error
+    errorMessage=$(cat error.txt)
+    echo "There was an error: $errorMessage"
+fi

.github/workflows/deploy-api-refs-prod.yml

@@ -34,6 +34,21 @@ jobs:
       - name: Build All Projects
         run: yarn turbo:command build --filter=!examples --filter=!api_refs --filter=!core_docs --filter=!create-langchain-integration
       - name: Build Project Artifacts
-        run: vercel build --prod --token=${{ secrets.VERCEL_TOKEN }}
+        run: |
+          if [ ${{ github.ref }} = 'refs/heads/main' ]; then
+            vercel build --prod --token=${{ secrets.VERCEL_TOKEN }}
+          else
+            vercel build --token=${{ secrets.VERCEL_TOKEN }}
+          fi
       - name: Deploy to Vercel
-        run: vercel deploy --prod --prebuilt --token=${{ secrets.VERCEL_TOKEN }}
+        env:
+          VERCEL_TOKEN: ${{ secrets.VERCEL_TOKEN }}
+        run: |
+          if [ ${{ github.ref }} = 'refs/heads/main' ]; then
+            vercel deploy --prebuilt --prod --token=${{ secrets.VERCEL_TOKEN }}
+          elif [ ${{ github.ref }} = 'refs/heads/v0.2' ]; then
+            .github/scripts/deployDomainVercel.sh v02
+          else
+            echo "Error: Deployment is only allowed for 'main' or 'v0.2' branches."
+            exit 1
+          fi