dapp: tweak deploy script

Author: patniemeyer

web-ethereum/account_dapp/deploy-orchid.sh

@@ -6,17 +6,40 @@ set -euxo pipefail
 export FLUTTER="${FLUTTER:-$FLUTTER_STABLE}"; $FLUTTER --version | grep -i channel
 base=$(dirname "$0"); cd $base
 
+# S3 bucket 
+bucket="account.orchid.com"
+
 echo "Building..."
 sh build.sh
 
+echo "Creating snapshot..."
+# Back up the current contents to a snapshot in the bucket:
+# Exclude "snapshots/*" so we don't recursively copy prior snapshots into the new one :)
+ts=$(date -u +%Y%m%d-%H%M%S)
+echo "Creating in-bucket snapshot at s3://$bucket/snapshots/$ts/ ..."
+aws s3 sync s3://$bucket/ s3://$bucket/snapshots/$ts/ \
+  --exclude "snapshots/*" \
+  --delete \
+  --profile $AWS_PROFILE_ORCHID
+
+# Show the new snapshot 
+echo "Available snapshots:"
+aws s3 ls s3://$bucket/snapshots/ --profile $AWS_PROFILE_ORCHID
+
+# To roll back:
+#   SNAPSHOT_TS="<TIMESTAMP>"
+#   aws s3 sync s3://$bucket/snapshots/$SNAPSHOT_TS/ s3://$bucket/ --delete --profile $AWS_PROFILE_ORCHID
+# Then invalidate CloudFront.
+
 echo "Deploying..."
-aws s3 sync --acl public-read --delete ./build/web/ s3://account.orchid.com/ --profile $AWS_PROFILE_ORCHID
+# Exclude the snapshots path so --delete does not remove stored snapshots.
+aws s3 sync --acl public-read --delete --exclude "snapshots/*" ./build/web/ s3://$bucket/ --profile $AWS_PROFILE_ORCHID
 
 echo "Updating Cloudfront..."
-bucket="account.orchid.com"
 distribution=$(aws --output json cloudfront list-distributions --profile $AWS_PROFILE_ORCHID | jq -r --arg bucket "$bucket" '.DistributionList.Items[] | select(.Status=="Deployed") | select(.Aliases.Items[] | contains($bucket)) | .Id')
 AWS_MAX_ATTEMPTS=10 aws cloudfront create-invalidation --distribution-id "$distribution" --paths "/*" --profile $AWS_PROFILE_ORCHID
 
 echo "Deploying widget..."
 ../dapp_widget/deploy-orchid.sh
 
+