/
metric.go
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/
metric.go
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// Copyright Project Harbor 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 converter
import (
"context"
"fmt"
"time"
"github.com/containerd/containerd/content"
"github.com/containerd/containerd/images"
"github.com/containerd/containerd/platforms"
ocispec "github.com/opencontainers/image-spec/specs-go/v1"
)
// Metric collected the metrics of conversion progress
type Metric struct {
// Total size of the source image with specified platforms in bytes
SourceImageSize int64
// Total size of the target image with specified platforms in bytes
TargetImageSize int64
// Elapsed time of pulling source image
SourcePullElapsed time.Duration
// Elapsed time of pushing target image
ConversionElapsed time.Duration
// Elapsed time of converting source image to target image
TargetPushElapsed time.Duration
}
func (metric *Metric) SetTargetImageSize(ctx context.Context, cvt *Converter, desc *ocispec.Descriptor) error {
var err error
metric.TargetImageSize, err = metric.imageSize(ctx, cvt.provider.ContentStore(), desc, cvt.platformMC)
return err
}
func (metric *Metric) SetSourceImageSize(ctx context.Context, cvt *Converter, source string) error {
image, err := cvt.provider.Image(ctx, source)
if err != nil {
return err
}
if metric.SourceImageSize, err = metric.imageSize(ctx, cvt.provider.ContentStore(), image, cvt.platformMC); err != nil {
return err
}
return nil
}
func (metric *Metric) imageSize(ctx context.Context, cs content.Store, image *ocispec.Descriptor, platformMC platforms.MatchComparer) (int64, error) {
var imageSize int64
switch image.MediaType {
case ocispec.MediaTypeImageIndex, images.MediaTypeDockerSchema2ManifestList:
manifests, err := images.FilterPlatforms(images.ChildrenHandler(cs), platformMC)(ctx, *image)
if err != nil {
return imageSize, err
}
for _, manifest := range manifests {
children, err := images.ChildrenHandler(cs)(ctx, manifest)
if err != nil {
return imageSize, err
}
for _, desc := range children {
imageSize += desc.Size
}
}
case ocispec.MediaTypeImageManifest, images.MediaTypeDockerSchema2Manifest:
children, err := images.ChildrenHandler(cs)(ctx, *image)
if err != nil {
return imageSize, err
}
for _, desc := range children {
imageSize += desc.Size
}
default:
return imageSize, fmt.Errorf("unknown descriptor type %s", image.MediaType)
}
return imageSize, nil
}