| // Copyright 2023 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 testvariantbranch |
| |
| import ( |
| "google.golang.org/protobuf/proto" |
| |
| "go.chromium.org/luci/common/errors" |
| |
| cpb "go.chromium.org/luci/analysis/internal/changepoints/proto" |
| "go.chromium.org/luci/analysis/internal/span" |
| pb "go.chromium.org/luci/analysis/proto/v1" |
| ) |
| |
| // EncodeProtoMessage uses zstd to encode a proto message into []byte. |
| func EncodeProtoMessage(m proto.Message) ([]byte, error) { |
| bytes, err := proto.Marshal(m) |
| if err != nil { |
| return nil, err |
| } |
| return span.Compress(bytes), nil |
| } |
| |
| func EncodeSegment(seg *cpb.Segment) ([]byte, error) { |
| if seg == nil { |
| return []byte{}, nil |
| } |
| return EncodeProtoMessage(seg) |
| } |
| |
| func EncodeSegments(segs *cpb.Segments) ([]byte, error) { |
| if segs == nil { |
| return []byte{}, nil |
| } |
| return EncodeProtoMessage(segs) |
| } |
| |
| func EncodeStatistics(stats *cpb.Statistics) ([]byte, error) { |
| if stats == nil { |
| return []byte{}, nil |
| } |
| return EncodeProtoMessage(stats) |
| } |
| |
| func EncodeSourceRef(sourceRef *pb.SourceRef) ([]byte, error) { |
| if sourceRef == nil { |
| panic("source ref should not be nil") |
| } |
| return EncodeProtoMessage(sourceRef) |
| } |
| |
| // DecodeProtoMessage decodes a byte slice into a proto message. |
| // It is the inverse of EncodeProtoMessage. |
| func DecodeProtoMessage(bytes []byte, m proto.Message) error { |
| buf := make([]byte, len(bytes)*2) |
| decompressed, err := span.Decompress(bytes, buf) |
| if err != nil { |
| return errors.Annotate(err, "decompress").Err() |
| } |
| return proto.Unmarshal(decompressed, m) |
| } |
| |
| // DecodeSegment decodes []byte in to Segment. |
| func DecodeSegment(bytes []byte) (*cpb.Segment, error) { |
| if len(bytes) == 0 { |
| return nil, nil |
| } |
| seg := &cpb.Segment{} |
| err := DecodeProtoMessage(bytes, seg) |
| if err != nil { |
| return nil, err |
| } |
| return seg, nil |
| } |
| |
| // DecodeSegments decodes []byte in to Segments. |
| func DecodeSegments(bytes []byte) (*cpb.Segments, error) { |
| if len(bytes) == 0 { |
| return nil, nil |
| } |
| seg := &cpb.Segments{} |
| err := DecodeProtoMessage(bytes, seg) |
| if err != nil { |
| return nil, err |
| } |
| return seg, nil |
| } |
| |
| // DecodeStatistics decodes []byte into a Statistics proto. |
| func DecodeStatistics(bytes []byte) (*cpb.Statistics, error) { |
| if len(bytes) == 0 { |
| return nil, nil |
| } |
| stats := &cpb.Statistics{} |
| err := DecodeProtoMessage(bytes, stats) |
| if err != nil { |
| return nil, err |
| } |
| return stats, nil |
| } |
| |
| // DecodeSourceRef decodes []byte in to SourceRef. |
| func DecodeSourceRef(bytes []byte) (*pb.SourceRef, error) { |
| sourceRef := &pb.SourceRef{} |
| err := DecodeProtoMessage(bytes, sourceRef) |
| if err != nil { |
| return nil, err |
| } |
| return sourceRef, nil |
| } |