1 // 2 // Copyright 2023 gRPC authors. 3 // 4 // Licensed under the Apache License, Version 2.0 (the "License"); 5 // you may not use this file except in compliance with the License. 6 // You may obtain a copy of the License at 7 // 8 // http://www.apache.org/licenses/LICENSE-2.0 9 // 10 // Unless required by applicable law or agreed to in writing, software 11 // distributed under the License is distributed on an "AS IS" BASIS, 12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 // See the License for the specific language governing permissions and 14 // limitations under the License. 15 // 16 17 #ifndef GRPC_SRC_CORE_LOAD_BALANCING_XDS_XDS_OVERRIDE_HOST_H 18 #define GRPC_SRC_CORE_LOAD_BALANCING_XDS_XDS_OVERRIDE_HOST_H 19 20 #include <grpc/support/port_platform.h> 21 22 #include "absl/strings/string_view.h" 23 #include "src/core/load_balancing/lb_policy.h" 24 #include "src/core/util/json/json.h" 25 #include "src/core/util/json/json_args.h" 26 #include "src/core/util/json/json_object_loader.h" 27 #include "src/core/util/ref_counted_ptr.h" 28 #include "src/core/util/validation_errors.h" 29 30 namespace grpc_core { 31 32 // Config for stateful session LB policy. 33 class XdsOverrideHostLbConfig final : public LoadBalancingPolicy::Config { 34 public: 35 XdsOverrideHostLbConfig() = default; 36 37 XdsOverrideHostLbConfig(const XdsOverrideHostLbConfig&) = delete; 38 XdsOverrideHostLbConfig& operator=(const XdsOverrideHostLbConfig&) = delete; 39 40 XdsOverrideHostLbConfig(XdsOverrideHostLbConfig&& other) = delete; 41 XdsOverrideHostLbConfig& operator=(XdsOverrideHostLbConfig&& other) = delete; 42 Name()43 static absl::string_view Name() { return "xds_override_host_experimental"; } 44 name()45 absl::string_view name() const override { return Name(); } 46 cluster_name()47 const std::string& cluster_name() const { return cluster_name_; } child_config()48 RefCountedPtr<LoadBalancingPolicy::Config> child_config() const { 49 return child_config_; 50 } 51 52 static const JsonLoaderInterface* JsonLoader(const JsonArgs&); 53 void JsonPostLoad(const Json& json, const JsonArgs&, 54 ValidationErrors* errors); 55 56 private: 57 std::string cluster_name_; 58 RefCountedPtr<LoadBalancingPolicy::Config> child_config_; 59 }; 60 61 } // namespace grpc_core 62 #endif // GRPC_SRC_CORE_LOAD_BALANCING_XDS_XDS_OVERRIDE_HOST_H 63