1 /* 2 * Copyright (C) 2021 The Android Open Source Project 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 SRC_TOOLS_PROTO_MERGER_PROTO_MERGER_H_ 18 #define SRC_TOOLS_PROTO_MERGER_PROTO_MERGER_H_ 19 20 #include "perfetto/base/status.h" 21 #include "src/tools/proto_merger/allowlist.h" 22 #include "src/tools/proto_merger/proto_file.h" 23 24 namespace perfetto { 25 namespace proto_merger { 26 27 // Merges any updates in the proto |upstream| into the proto |input| 28 // optionally adding any messages/fields/enums/values specified in the 29 // the |allowlist|. 30 // 31 // Some notes about the merging algorithm: 32 // * Comments for all values are always taken from |upstream|. 33 // * If an enum is allowed, then so are all it's values. 34 // * Options for fields are always taken from |input|; any new options in 35 // |upstream| are ignored. 36 // * Changing the type of an existing field is not supported (even if its 37 // just a move); this needs to be handled manually. 38 base::Status MergeProtoFiles(const ProtoFile& input, 39 const ProtoFile& upstream, 40 const Allowlist& allowlist, 41 ProtoFile& out); 42 43 } // namespace proto_merger 44 } // namespace perfetto 45 46 #endif // SRC_TOOLS_PROTO_MERGER_PROTO_MERGER_H_ 47