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//
//
// 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.
//
//
#include <grpc/support/port_platform.h>
#include "src/cpp/server/csds/csds.h"
#include "absl/status/statusor.h"
#include <grpc/grpc.h>
#include <grpc/support/alloc.h>
#include <grpcpp/impl/codegen/slice.h>
#include <string>
#include "src/proto/grpc/testing/xds/v3/csds.grpc.pb.h"
namespace grpc {
namespace xds {
namespace experimental {
using envoy::service::status::v3::ClientConfig;
using envoy::service::status::v3::ClientStatusRequest;
using envoy::service::status::v3::ClientStatusResponse;
namespace {
absl::StatusOr<ClientConfig> DumpClientConfig() {
ClientConfig client_config;
grpc_slice serialized_client_config = grpc_dump_xds_configs();
std::string bytes = StringFromCopiedSlice(serialized_client_config);
grpc_slice_unref(serialized_client_config);
if (!client_config.ParseFromString(bytes)) {
return absl::InternalError("Failed to parse ClientConfig.");
}
return client_config;
}
} // namespace
Status ClientStatusDiscoveryService::StreamClientStatus(
ServerContext* /*context*/,
ServerReaderWriter<ClientStatusResponse, ClientStatusRequest>* stream) {
ClientStatusRequest request;
while (stream->Read(&request)) {
ClientStatusResponse response;
absl::StatusOr<ClientConfig> s = DumpClientConfig();
if (!s.ok()) {
if (s.status().code() == absl::StatusCode::kUnavailable) {
// If the xDS client is not initialized, return empty response
stream->Write(response);
continue;
}
return Status(StatusCode(s.status().raw_code()), s.status().ToString());
}
*response.add_config() = std::move(s.value());
stream->Write(response);
}
return Status::OK;
}
Status ClientStatusDiscoveryService::FetchClientStatus(
ServerContext* /*context*/, const ClientStatusRequest* /*request*/,
ClientStatusResponse* response) {
absl::StatusOr<ClientConfig> s = DumpClientConfig();
if (!s.ok()) {
if (s.status().code() == absl::StatusCode::kUnavailable) {
// If the xDS client is not initialized, return empty response
return Status::OK;
}
return Status(StatusCode(s.status().raw_code()), s.status().ToString());
}
*response->add_config() = std::move(s.value());
return Status::OK;
}
} // namespace experimental
} // namespace xds
} // namespace grpc
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