| /* |
| * |
| * Copyright 2015 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_RESOLVER_FACTORY_H |
| #define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_FACTORY_H |
| |
| #include <grpc/support/port_platform.h> |
| |
| #include <grpc/support/string_util.h> |
| |
| #include "src/core/ext/filters/client_channel/resolver.h" |
| #include "src/core/lib/gprpp/abstract.h" |
| #include "src/core/lib/gprpp/memory.h" |
| #include "src/core/lib/gprpp/orphanable.h" |
| #include "src/core/lib/iomgr/pollset_set.h" |
| #include "src/core/lib/uri/uri_parser.h" |
| |
| namespace grpc_core { |
| |
| struct ResolverArgs { |
| /// The parsed URI to resolve. |
| grpc_uri* uri = nullptr; |
| /// Channel args to be included in resolver results. |
| const grpc_channel_args* args = nullptr; |
| /// Used to drive I/O in the name resolution process. |
| grpc_pollset_set* pollset_set = nullptr; |
| /// The combiner under which all resolver calls will be run. |
| grpc_combiner* combiner = nullptr; |
| }; |
| |
| class ResolverFactory { |
| public: |
| /// Returns a new resolver instance. |
| virtual OrphanablePtr<Resolver> CreateResolver(const ResolverArgs& args) const |
| GRPC_ABSTRACT; |
| |
| /// Returns a string representing the default authority to use for this |
| /// scheme. |
| virtual UniquePtr<char> GetDefaultAuthority(grpc_uri* uri) const { |
| const char* path = uri->path; |
| if (path[0] == '/') ++path; |
| return UniquePtr<char>(gpr_strdup(path)); |
| } |
| |
| /// Returns the URI scheme that this factory implements. |
| /// Caller does NOT take ownership of result. |
| virtual const char* scheme() const GRPC_ABSTRACT; |
| |
| virtual ~ResolverFactory() {} |
| |
| GRPC_ABSTRACT_BASE_CLASS |
| }; |
| |
| } // namespace grpc_core |
| |
| #endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_RESOLVER_FACTORY_H */ |