Update fetch and generate scripts for reflection

Motivation:

To add the reflection service we need to fetch it and generate the
appropriate code.

Modifications:

- Update proto fetching script to get v1 reflection service
- Update proto generating script to generate reflection service code and
  messages
- Also add protos used in tests for the reflection service and generate
  their descriptor sets

Result:

Generated code is in place

Author: glbrntt

Sources/GRPCReflectionService/Generated/reflection.grpc.swift

@@ -30,6 +30,8 @@ rm -rf "$upstream"
 # Create new directories to poulate. These are based on proto package name
 # rather than source repository name.
 mkdir -p "$upstream/grpc/health/v1"
+mkdir -p "$upstream/grpc/reflection/v1"
 
 # Copy over the grpc-proto protos.
 cp -rp "$checkouts/grpc-proto/grpc/health/v1/health.proto" "$upstream/grpc/health/v1/health.proto"
+cp -rp "$checkouts/grpc-proto/grpc/reflection/v1/reflection.proto" "$upstream/grpc/reflection/v1/reflection.proto"

Sources/GRPCReflectionService/Generated/reflection.pb.swift

@@ -94,10 +94,65 @@ function generate_health_service {
   generate_grpc "$proto" "$(dirname "$proto")" "$output" "Visibility=Package" "Client=true" "Server=true" "UseAccessLevelOnImports=true"
 }
 
+function generate_reflection_service {
+  local proto="$here/upstream/grpc/reflection/v1/reflection.proto"
+  local output="$root/Sources/GRPCReflectionService/Generated"
+
+  # Messages were accidentally leaked into public API, they shouldn't be but we
+  # can't undo that change until the next major version.
+  generate_message "$proto" "$(dirname "$proto")" "$output" "Visibility=Package" "UseAccessLevelOnImports=true"
+  generate_grpc "$proto" "$(dirname "$proto")" "$output" "Visibility=Package" "UseAccessLevelOnImports=true"
+}
+
+#- TEST DATA ------------------------------------------------------------------
+
+function generate_reflection_service_descriptor_set {
+  local proto="$here/upstream/grpc/reflection/v1/reflection.proto"
+  local proto_path="$here/upstream"
+  local output="$root/Tests/GRPCReflectionServiceTests/Generated/DescriptorSets/reflection.pb"
+
+  invoke_protoc --descriptor_set_out="$output" "$proto" -I "$proto_path" \
+    --include_source_info \
+    --include_imports
+}
+
+function generate_health_service_descriptor_set {
+  local proto="$here/upstream/grpc/health/v1/health.proto"
+  local proto_path="$here/upstream"
+  local output="$root/Tests/GRPCReflectionServiceTests/Generated/DescriptorSets/health.pb"
+
+  invoke_protoc --descriptor_set_out="$output" "$proto" -I "$proto_path" \
+    --include_source_info \
+    --include_imports
+}
+
+function generate_extended_message_descriptor_set {
+  local proto="$here/tests/reflection/base_message.proto"
+  local proto_path="$here/tests/reflection"
+  local output="$root/Tests/GRPCReflectionServiceTests/Generated/DescriptorSets/base_message.pb"
+
+  invoke_protoc --descriptor_set_out="$output" "$proto" -I "$proto_path" \
+    --include_source_info \
+    --include_imports
+}
+
+function generate_message_with_dependency_descriptor_set {
+  local proto="$here/tests/reflection/message_with_dependency.proto"
+  local proto_path="$here/tests/reflection"
+  local output="$root/Tests/GRPCReflectionServiceTests/Generated/DescriptorSets/message_with_dependency.pb"
+
+  invoke_protoc --descriptor_set_out="$output" "$proto" -I "$proto_path" \
+    --include_source_info \
+    --include_imports
+}
+
 #------------------------------------------------------------------------------
 
-# Interoperability tests
 generate_interop_test_service
-
-# Health service
 generate_health_service
+generate_reflection_service
+
+generate_reflection_service_descriptor_set
+generate_health_service_descriptor_set
+generate_extended_message_descriptor_set
+generate_message_with_dependency_descriptor_set

Tests/GRPCReflectionServiceTests/Generated/DescriptorSets/base_message.pb

@@ -0,0 +1,11 @@
+syntax = "proto2";
+
+message BaseMessage {
+  required string id = 1;
+
+  extensions 100 to 101;
+}
+
+extend BaseMessage {
+  optional int32 extended_field = 100;
+}

Tests/GRPCReflectionServiceTests/Generated/DescriptorSets/health.pb

@@ -0,0 +1,7 @@
+syntax = "proto3";
+
+import "google/protobuf/empty.proto";
+
+message MessageWithDependency {
+  google.protobuf.Empty empty = 1;
+}