| // |
| // Copyright 2021 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_CORE_EXT_FILTERS_FAULT_INJECTION_SERVICE_CONFIG_PARSER_H |
| #define GRPC_CORE_EXT_FILTERS_FAULT_INJECTION_SERVICE_CONFIG_PARSER_H |
| |
| #include <grpc/support/port_platform.h> |
| |
| #include <vector> |
| |
| #include "src/core/ext/filters/client_channel/service_config.h" |
| #include "src/core/lib/iomgr/exec_ctx.h" |
| |
| namespace grpc_core { |
| |
| class FaultInjectionMethodParsedConfig |
| : public ServiceConfigParser::ParsedConfig { |
| public: |
| struct FaultInjectionPolicy { |
| grpc_status_code abort_code = GRPC_STATUS_OK; |
| std::string abort_message; |
| std::string abort_code_header; |
| std::string abort_percentage_header; |
| uint32_t abort_percentage_numerator = 0; |
| uint32_t abort_percentage_denominator = 100; |
| |
| grpc_millis delay = 0; |
| std::string delay_header; |
| std::string delay_percentage_header; |
| uint32_t delay_percentage_numerator = 0; |
| uint32_t delay_percentage_denominator = 100; |
| |
| // By default, the max allowed active faults are unlimited. |
| uint32_t max_faults = std::numeric_limits<uint32_t>::max(); |
| }; |
| |
| explicit FaultInjectionMethodParsedConfig( |
| std::vector<FaultInjectionPolicy> fault_injection_policies) |
| : fault_injection_policies_(std::move(fault_injection_policies)) {} |
| |
| // Returns the fault injection policy at certain index. |
| // There might be multiple fault injection policies functioning at the same |
| // time. The order between the policies are stable, and an index is used to |
| // keep track of their relative positions. The FaultInjectionFilter uses this |
| // method to access the parsed fault injection policy in service config, |
| // whether it came from xDS resolver or directly from service config |
| const FaultInjectionPolicy* fault_injection_policy(int index) const { |
| if (static_cast<size_t>(index) >= fault_injection_policies_.size()) { |
| return nullptr; |
| } |
| return &fault_injection_policies_[index]; |
| } |
| |
| private: |
| std::vector<FaultInjectionPolicy> fault_injection_policies_; |
| }; |
| |
| class FaultInjectionServiceConfigParser : public ServiceConfigParser::Parser { |
| public: |
| // Parses the per-method service config for fault injection filter. |
| std::unique_ptr<ServiceConfigParser::ParsedConfig> ParsePerMethodParams( |
| const grpc_channel_args* args, const Json& json, |
| grpc_error_handle* error) override; |
| // Returns the parser index for FaultInjectionServiceConfigParser. |
| static size_t ParserIndex(); |
| // Registers FaultInjectionServiceConfigParser to ServiceConfigParser. |
| static void Register(); |
| }; |
| |
| } // namespace grpc_core |
| |
| #endif // GRPC_CORE_EXT_FILTERS_FAULT_INJECTION_SERVICE_CONFIG_PARSER_H |