Support null bytes in definition keys

Summary: Since these are byte strings we have to handle the case where one of the bytes is zero

Reviewed By: createdbysk

Differential Revision: D67954736

fbshipit-source-id: 70e57eb1def45e40afa050935111cbed8d794071

Author: iahs

third-party/thrift/src/thrift/compiler/generate/t_mstch_cpp2_generator.cc

@@ -824,6 +824,8 @@ class cpp_mstch_service : public mstch_service {
              &cpp_mstch_service::has_service_schema},
             {"service:reduced_client?", &cpp_mstch_service::reduced_client},
             {"service:definition_key", &cpp_mstch_service::definition_key},
+            {"service:definition_key_length",
+             &cpp_mstch_service::definition_key_length},
         });
 
     const auto all_functions = mstch_service::get_functions();
@@ -910,6 +912,10 @@ class cpp_mstch_service : public mstch_service {
     schematizer s(*service_->program()->scope(), sm_, {});
     return escape_binary_string(s.identify_definition(*service_));
   }
+  mstch::node definition_key_length() {
+    schematizer s(*service_->program()->scope(), sm_, {});
+    return escape_binary_string(s.identify_definition(*service_)).length();
+  }
 
  private:
   const std::vector<t_function*>& get_functions() const override {

third-party/thrift/src/thrift/compiler/generate/templates/cpp2/service_cpp/handlers_cpp.mustache

@@ -30,7 +30,7 @@ std::optional<apache::thrift::schema::DefinitionsSchema> {{> service_common/serv
 {{#program:has_schema?}}
   std::optional<apache::thrift::schema::DefinitionsSchema> ret = schema::DefinitionsSchema{};
   ret->schema = ::apache::thrift::SchemaRegistry::mergeSchemas(::{{service:qualified_namespace}}::{{program:name}}_constants::{{program:schema_name}}_includes());
-  ret->definitions = {"{{service:definition_key}}"};
+  ret->definitions = { {"{{service:definition_key}}", {{service:definition_key_length}}} };
   return ret;
 {{/program:has_schema?}}
 {{^program:has_schema?}}

third-party/thrift/src/thrift/compiler/test/fixtures/service-schema/out/cpp2/gen-cpp2/PrimitivesService.cpp

@@ -23,7 +23,7 @@ apache::thrift::ServiceHandler<::cpp2::PrimitivesService>::CreateMethodMetadataR
 std::optional<apache::thrift::schema::DefinitionsSchema> apache::thrift::ServiceHandler<::cpp2::PrimitivesService>::getServiceSchema() {
   std::optional<apache::thrift::schema::DefinitionsSchema> ret = schema::DefinitionsSchema{};
   ret->schema = ::apache::thrift::SchemaRegistry::mergeSchemas(::cpp2::module_constants::_fbthrift_schema_b747839c13cb3aa5_includes());
-  ret->definitions = {"\x0d\x05\x1d\xbc\xb2\xd5\x1d\x8f\x95\x45\xbb\x51\xfa\xcf\x0f\xfe"};
+  ret->definitions = { {"\x0d\x05\x1d\xbc\xb2\xd5\x1d\x8f\x95\x45\xbb\x51\xfa\xcf\x0f\xfe", 64} };
   return ret;
 }
 #endif

third-party/thrift/src/thrift/compiler/test/fixtures/service-schema/out/cpp2_sinit/gen-cpp2/PrimitivesService.cpp

@@ -23,7 +23,7 @@ apache::thrift::ServiceHandler<::cpp2::PrimitivesService>::CreateMethodMetadataR
 std::optional<apache::thrift::schema::DefinitionsSchema> apache::thrift::ServiceHandler<::cpp2::PrimitivesService>::getServiceSchema() {
   std::optional<apache::thrift::schema::DefinitionsSchema> ret = schema::DefinitionsSchema{};
   ret->schema = ::apache::thrift::SchemaRegistry::mergeSchemas(::cpp2::module_constants::_fbthrift_schema_b747839c13cb3aa5_includes());
-  ret->definitions = {"\x0d\x05\x1d\xbc\xb2\xd5\x1d\x8f\x95\x45\xbb\x51\xfa\xcf\x0f\xfe"};
+  ret->definitions = { {"\x0d\x05\x1d\xbc\xb2\xd5\x1d\x8f\x95\x45\xbb\x51\xfa\xcf\x0f\xfe", 64} };
   return ret;
 }
 #endif