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//
// Copyright 2016 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_CLIENT_CHANNEL_SERVICE_CONFIG_CALL_DATA_H
#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SERVICE_CONFIG_CALL_DATA_H
#include <grpc/support/port_platform.h>
#include <map>
#include "absl/strings/string_view.h"
#include "src/core/ext/filters/client_channel/service_config.h"
#include "src/core/ext/filters/client_channel/service_config_parser.h"
#include "src/core/lib/channel/context.h"
#include "src/core/lib/gprpp/ref_counted_ptr.h"
namespace grpc_core {
/// When a service config is applied to a call in the client_channel_filter,
/// we create an instance of this object on the arena. A pointer to this
/// object is also stored in the call_context, so that future filters can
/// easily access method and global parameters for the call.
class ServiceConfigCallData {
public:
ServiceConfigCallData(
RefCountedPtr<ServiceConfig> service_config,
const ServiceConfigParser::ParsedConfigVector* method_configs,
std::map<const char*, absl::string_view> call_attributes,
grpc_call_context_element* call_context)
: service_config_(std::move(service_config)),
method_configs_(method_configs),
call_attributes_(std::move(call_attributes)) {
call_context[GRPC_CONTEXT_SERVICE_CONFIG_CALL_DATA].value = this;
call_context[GRPC_CONTEXT_SERVICE_CONFIG_CALL_DATA].destroy = Destroy;
}
ServiceConfigCallData(
RefCountedPtr<ServiceConfig> service_config,
const ServiceConfigParser::ParsedConfigVector* method_configs,
grpc_call_context_element* call_context)
: ServiceConfigCallData(std::move(service_config), method_configs, {},
call_context) {}
ServiceConfig* service_config() { return service_config_.get(); }
ServiceConfigParser::ParsedConfig* GetMethodParsedConfig(size_t index) const {
return method_configs_ != nullptr ? (*method_configs_)[index].get()
: nullptr;
}
ServiceConfigParser::ParsedConfig* GetGlobalParsedConfig(size_t index) const {
return service_config_->GetGlobalParsedConfig(index);
}
const std::map<const char*, absl::string_view>& call_attributes() const {
return call_attributes_;
}
private:
static void Destroy(void* ptr) {
ServiceConfigCallData* self = static_cast<ServiceConfigCallData*>(ptr);
self->~ServiceConfigCallData();
}
RefCountedPtr<ServiceConfig> service_config_;
const ServiceConfigParser::ParsedConfigVector* method_configs_ = nullptr;
std::map<const char*, absl::string_view> call_attributes_;
};
} // namespace grpc_core
#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_SERVICE_CONFIG_CALL_DATA_H */
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