Apply patches on the generated *.pb.gw.go files to convert v1 message…

…s to v2 messages

Signed-off-by: Benjamin Wang <[email protected]>

scripts/genproto.sh

@@ -117,6 +117,17 @@ for pb in api/etcdserverpb/rpc server/etcdserver/api/v3lock/v3lockpb/v3lock serv
     Documentation/dev-guide/apispec/swagger/"${swaggerName}".swagger.json
 done
 
+# We only upgraded grpc-gateway from v1 to v2, but keep gogo/protobuf as it's for now.
+# So we have to convert v1 message to v2 message. Once we get rid of gogo/protobuf, and
+# start to depend on protobuf v2, then we can remove this patch.
+for pb in api/etcdserverpb/rpc server/etcdserver/api/v3lock/v3lockpb/v3lock server/etcdserver/api/v3election/v3electionpb/v3election; do
+  gwfile="$(dirname ${pb})/gw/$(basename ${pb}).pb.gw.go"
+
+  run set -i -E "s#return msg, metadata, err#return protov1.MessageV2(msg), metadata, err#g" "${gwfile}"
+  run sed -i -E "s#Decode\(\&protoReq\)#Decode\(protov1\.MessageV2\(\&protoReq\)\)#g" "${gwfile}"
+  run go fmt "${gwfile}"
+done
+
 if [ "${1:-}" != "--skip-protodoc" ]; then
   log_callout "protodoc is auto-generating grpc API reference documentation..."