| // |
| // Copyright 2022 gRPC authors. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| // |
| |
| #ifndef GRPC_SRC_CORE_EXT_FILTERS_STATEFUL_SESSION_STATEFUL_SESSION_SERVICE_CONFIG_PARSER_H |
| #define GRPC_SRC_CORE_EXT_FILTERS_STATEFUL_SESSION_STATEFUL_SESSION_SERVICE_CONFIG_PARSER_H |
| |
| #include <grpc/support/port_platform.h> |
| |
| #include <stddef.h> |
| |
| #include <memory> |
| #include <string> |
| #include <vector> |
| |
| #include "absl/strings/string_view.h" |
| #include "absl/types/optional.h" |
| |
| #include "src/core/lib/channel/channel_args.h" |
| #include "src/core/lib/config/core_configuration.h" |
| #include "src/core/lib/gprpp/time.h" |
| #include "src/core/lib/gprpp/validation_errors.h" |
| #include "src/core/lib/json/json.h" |
| #include "src/core/lib/json/json_args.h" |
| #include "src/core/lib/json/json_object_loader.h" |
| #include "src/core/lib/service_config/service_config_parser.h" |
| |
| // Channel arg key for enabling parsing fault injection via method config. |
| #define GRPC_ARG_PARSE_STATEFUL_SESSION_METHOD_CONFIG \ |
| "grpc.internal.parse_stateful_session_method_config" |
| |
| namespace grpc_core { |
| |
| class StatefulSessionMethodParsedConfig |
| : public ServiceConfigParser::ParsedConfig { |
| public: |
| struct CookieConfig { |
| absl::optional<std::string> name; // Will be unset if disabled. |
| std::string path; |
| Duration ttl; |
| |
| static const JsonLoaderInterface* JsonLoader(const JsonArgs&); |
| void JsonPostLoad(const Json&, const JsonArgs&, ValidationErrors* errors); |
| }; |
| |
| // Returns the config at the specified index. There might be multiple |
| // stateful session filters in the list of HTTP filters at the same time. |
| // The order of the list is stable, and an index is used to keep track of |
| // their relative positions. Each filter instance uses this method to |
| // access the appropriate parsed config for that instance. |
| const CookieConfig* GetConfig(size_t index) const { |
| if (index >= configs_.size()) return nullptr; |
| return &configs_[index]; |
| } |
| |
| static const JsonLoaderInterface* JsonLoader(const JsonArgs&); |
| |
| private: |
| std::vector<CookieConfig> configs_; |
| }; |
| |
| class StatefulSessionServiceConfigParser final |
| : public ServiceConfigParser::Parser { |
| public: |
| absl::string_view name() const override { return parser_name(); } |
| // Parses the per-method service config for the filter. |
| std::unique_ptr<ServiceConfigParser::ParsedConfig> ParsePerMethodParams( |
| const ChannelArgs& args, const Json& json, |
| ValidationErrors* errors) override; |
| // Returns the parser index for the parser. |
| static size_t ParserIndex(); |
| // Registers the parser. |
| static void Register(CoreConfiguration::Builder* builder); |
| |
| private: |
| static absl::string_view parser_name() { return "stateful_session"; } |
| }; |
| |
| } // namespace grpc_core |
| |
| #endif // GRPC_SRC_CORE_EXT_FILTERS_STATEFUL_SESSION_STATEFUL_SESSION_SERVICE_CONFIG_PARSER_H |