/
image_writer.go
110 lines (103 loc) · 2.82 KB
/
image_writer.go
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// Copyright 2020-2021 Buf Technologies, Inc.
//
// 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 bufwire
import (
"context"
"fmt"
"github.com/bufbuild/buf/internal/buf/buffetch"
"github.com/bufbuild/buf/private/bufpkg/bufimage"
"github.com/bufbuild/buf/private/pkg/app"
"github.com/bufbuild/buf/private/pkg/protoencoding"
"go.opencensus.io/trace"
"go.uber.org/multierr"
"go.uber.org/zap"
"google.golang.org/protobuf/proto"
)
type imageWriter struct {
logger *zap.Logger
fetchWriter buffetch.Writer
}
func newImageWriter(
logger *zap.Logger,
fetchWriter buffetch.Writer,
) *imageWriter {
return &imageWriter{
logger: logger,
fetchWriter: fetchWriter,
}
}
func (i *imageWriter) PutImage(
ctx context.Context,
container app.EnvStdoutContainer,
imageRef buffetch.ImageRef,
image bufimage.Image,
asFileDescriptorSet bool,
excludeImports bool,
) (retErr error) {
ctx, span := trace.StartSpan(ctx, "put_image")
defer span.End()
// stop short for performance
if imageRef.IsNull() {
return nil
}
writeImage := image
if excludeImports {
writeImage = bufimage.ImageWithoutImports(image)
}
var message proto.Message
if asFileDescriptorSet {
message = bufimage.ImageToFileDescriptorSet(writeImage)
} else {
message = bufimage.ImageToProtoImage(writeImage)
}
data, err := i.imageMarshal(ctx, message, image, imageRef.ImageEncoding())
if err != nil {
return err
}
writeCloser, err := i.fetchWriter.PutImageFile(ctx, container, imageRef)
if err != nil {
return err
}
defer func() {
retErr = multierr.Append(retErr, writeCloser.Close())
}()
_, err = writeCloser.Write(data)
return err
}
func (i *imageWriter) imageMarshal(
ctx context.Context,
message proto.Message,
image bufimage.Image,
imageEncoding buffetch.ImageEncoding,
) ([]byte, error) {
_, span := trace.StartSpan(ctx, "image_marshal")
defer span.End()
switch imageEncoding {
case buffetch.ImageEncodingBin:
return protoencoding.NewWireMarshaler().Marshal(message)
case buffetch.ImageEncodingJSON:
// TODO: verify that image is complete
resolver, err := protoencoding.NewResolver(
bufimage.ImageToFileDescriptors(
image,
)...,
)
if err != nil {
return nil, err
}
return protoencoding.NewJSONMarshaler(resolver).Marshal(message)
default:
return nil, fmt.Errorf("unknown image encoding: %v", imageEncoding)
}
}