| // Copyright 2015 The LUCI 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. |
| |
| package annopb |
| |
| import ( |
| "bytes" |
| "encoding/json" |
| |
| "github.com/golang/protobuf/jsonpb" |
| "google.golang.org/protobuf/types/known/structpb" |
| ) |
| |
| // ContentTypeAnnotations is a stream content type for annotation streams. |
| const ContentTypeAnnotations = "text/x-chrome-infra-annotations; version=2" |
| |
| // ExtractProperties returns a flat list of properties from a tree of steps. |
| // If multiple step nodes have a property of the same name, the last one in the |
| // preorder traversal wins. |
| func ExtractProperties(s *Step) (*structpb.Struct, error) { |
| finals := map[string]json.RawMessage{} |
| |
| var extract func(s *Step) |
| extract = func(s *Step) { |
| for _, p := range s.Property { |
| finals[p.Name] = json.RawMessage(p.Value) |
| } |
| for _, substep := range s.GetSubstep() { |
| if ss := substep.GetStep(); ss != nil { |
| extract(ss) |
| } |
| } |
| } |
| extract(s) |
| |
| buf, err := json.Marshal(finals) |
| if err != nil { |
| panic("failed to marshal in-memory map to JSON") |
| } |
| |
| ret := &structpb.Struct{} |
| if err := jsonpb.Unmarshal(bytes.NewReader(buf), ret); err != nil { |
| return nil, err |
| } |
| return ret, nil |
| } |