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//
// Copyright 2019 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_XDS_XDS_BOOTSTRAP_H
#define GRPC_CORE_EXT_XDS_XDS_BOOTSTRAP_H
#include <grpc/support/port_platform.h>
#include <memory>
#include <set>
#include <string>
#include <vector>
#include "absl/container/inlined_vector.h"
#include <grpc/slice.h>
#include "src/core/ext/xds/certificate_provider_store.h"
#include "src/core/lib/gprpp/memory.h"
#include "src/core/lib/gprpp/ref_counted_ptr.h"
#include "src/core/lib/iomgr/error.h"
#include "src/core/lib/json/json.h"
#include "src/core/lib/security/credentials/credentials.h"
namespace grpc_core {
class XdsClient;
class XdsChannelCredsRegistry {
public:
static bool IsSupported(const std::string& creds_type);
static bool IsValidConfig(const std::string& creds_type, const Json& config);
static RefCountedPtr<grpc_channel_credentials> MakeChannelCreds(
const std::string& creds_type, const Json& config);
};
class XdsBootstrap {
public:
struct Node {
std::string id;
std::string cluster;
std::string locality_region;
std::string locality_zone;
std::string locality_sub_zone;
Json metadata;
};
struct XdsServer {
std::string server_uri;
std::string channel_creds_type;
Json channel_creds_config;
std::set<std::string> server_features;
bool ShouldUseV3() const;
};
// Creates bootstrap object from json_string.
// If *error is not GRPC_ERROR_NONE after returning, then there was an
// error parsing the contents.
static std::unique_ptr<XdsBootstrap> Create(absl::string_view json_string,
grpc_error_handle* error);
// Do not instantiate directly -- use Create() above instead.
XdsBootstrap(Json json, grpc_error_handle* error);
std::string ToString() const;
// TODO(roth): We currently support only one server. Fix this when we
// add support for fallback for the xds channel.
const XdsServer& server() const { return servers_[0]; }
const Node* node() const { return node_.get(); }
const std::string& server_listener_resource_name_template() const {
return server_listener_resource_name_template_;
}
const CertificateProviderStore::PluginDefinitionMap& certificate_providers()
const {
return certificate_providers_;
}
private:
grpc_error_handle ParseXdsServerList(Json* json);
grpc_error_handle ParseXdsServer(Json* json, size_t idx);
grpc_error_handle ParseChannelCredsArray(Json* json, XdsServer* server);
grpc_error_handle ParseChannelCreds(Json* json, size_t idx,
XdsServer* server);
grpc_error_handle ParseServerFeaturesArray(Json* json, XdsServer* server);
grpc_error_handle ParseNode(Json* json);
grpc_error_handle ParseLocality(Json* json);
grpc_error_handle ParseCertificateProviders(Json* json);
grpc_error_handle ParseCertificateProvider(const std::string& instance_name,
Json* certificate_provider_json);
absl::InlinedVector<XdsServer, 1> servers_;
std::unique_ptr<Node> node_;
std::string server_listener_resource_name_template_;
CertificateProviderStore::PluginDefinitionMap certificate_providers_;
};
} // namespace grpc_core
#endif /* GRPC_CORE_EXT_XDS_XDS_BOOTSTRAP_H */
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