Support disabling proto load via environment variable

Makefile

@@ -6,4 +6,10 @@ PROTO_OUT := lib/gen
 proto:
 	$(foreach PROTO_DIR,$(PROTO_DIRS),bundle exec grpc_tools_ruby_protoc -Iproto --ruby_out=$(PROTO_OUT) --grpc_out=$(PROTO_OUT) $(PROTO_DIR)*.proto;)
 
+	# Need to only load imports if not disabled
+	sed -i "/require 'temporal/ s|\(.*\)|\1 unless ENV['COINBASE_TEMPORAL_RUBY_DISABLE_PROTO_LOAD'] == '1'|" \
+		lib/gen/temporal/api/operatorservice/v1/service_services_pb.rb
+	sed -i "/require 'temporal/ s|\(.*\)|\1 unless ENV['COINBASE_TEMPORAL_RUBY_DISABLE_PROTO_LOAD'] == '1'|" \
+		lib/gen/temporal/api/workflowservice/v1/service_services_pb.rb
+
 .PHONY: proto

lib/temporal.rb

@@ -1,5 +1,7 @@
-# Protoc wants all of its generated files on the LOAD_PATH
-$LOAD_PATH << File.expand_path('./gen', __dir__)
+# Protoc wants all of its generated files on the LOAD_PATH. Only require protos if not disabled.
+unless ENV['COINBASE_TEMPORAL_RUBY_DISABLE_PROTO_LOAD'] == '1'
+  $LOAD_PATH << File.expand_path('./gen', __dir__)
+end
 
 require 'securerandom'
 require 'forwardable'

lib/temporal/connection/grpc.rb

@@ -3,11 +3,6 @@
 require 'google/protobuf/well_known_types'
 require 'securerandom'
 require 'json'
-require 'gen/temporal/api/filter/v1/message_pb'
-require 'gen/temporal/api/workflowservice/v1/service_services_pb'
-require 'gen/temporal/api/operatorservice/v1/service_services_pb'
-require 'gen/temporal/api/enums/v1/workflow_pb'
-require 'gen/temporal/api/enums/v1/common_pb'
 require 'temporal/connection/errors'
 require 'temporal/connection/interceptors/client_name_version_interceptor'
 require 'temporal/connection/serializer'
@@ -16,6 +11,17 @@
 require 'temporal/connection/serializer/schedule'
 require 'temporal/connection/serializer/workflow_id_reuse_policy'
 
+# Only require protos if not disabled. This env var is commonly set to work alongside the temporalio/sdk-ruby project.
+unless ENV['COINBASE_TEMPORAL_RUBY_DISABLE_PROTO_LOAD'] == '1'
+  require 'gen/temporal/api/filter/v1/message_pb'
+  require 'gen/temporal/api/enums/v1/workflow_pb'
+  require 'gen/temporal/api/enums/v1/common_pb'
+end
+
+# These are gRPC stubs, not protos, and therefore are not disabled when protos are
+require 'gen/temporal/api/workflowservice/v1/service_services_pb'
+require 'gen/temporal/api/operatorservice/v1/service_services_pb'
+
 module Temporal
   module Connection
     class GRPC

lib/temporal/connection/serializer/base.rb

@@ -1,6 +1,10 @@
 require 'oj'
-require 'gen/temporal/api/common/v1/message_pb'
-require 'gen/temporal/api/command/v1/message_pb'
+
+# Only require protos if not disabled
+unless ENV['COINBASE_TEMPORAL_RUBY_DISABLE_PROTO_LOAD'] == '1'
+  require 'gen/temporal/api/common/v1/message_pb'
+  require 'gen/temporal/api/command/v1/message_pb'
+end
 
 module Temporal
   module Connection

lib/temporal/testing/replay_tester.rb

@@ -1,11 +1,15 @@
-require "gen/temporal/api/history/v1/message_pb"
 require "json"
 require "temporal/errors"
 require "temporal/metadata/workflow_task"
 require "temporal/middleware/chain"
 require "temporal/workflow/executor"
 require "temporal/workflow/stack_trace_tracker"
 
+# Only require protos if not disabled
+unless ENV['COINBASE_TEMPORAL_RUBY_DISABLE_PROTO_LOAD'] == '1'
+  require "gen/temporal/api/history/v1/message_pb"
+end
+
 module Temporal
   module Testing
     class ReplayError < StandardError