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// Copyright 2022 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package container
import (
"context"
"encoding/hex"
"errors"
"fmt"
"os"
"strings"
"sync"
"code.gitea.io/gitea/models/db"
packages_model "code.gitea.io/gitea/models/packages"
container_model "code.gitea.io/gitea/models/packages/container"
"code.gitea.io/gitea/modules/log"
packages_module "code.gitea.io/gitea/modules/packages"
container_module "code.gitea.io/gitea/modules/packages/container"
"code.gitea.io/gitea/modules/util"
packages_service "code.gitea.io/gitea/services/packages"
)
var uploadVersionMutex sync.Mutex
// saveAsPackageBlob creates a package blob from an upload
// The uploaded blob gets stored in a special upload version to link them to the package/image
func saveAsPackageBlob(ctx context.Context, hsr packages_module.HashedSizeReader, pci *packages_service.PackageCreationInfo) (*packages_model.PackageBlob, error) { //nolint:unparam
pb := packages_service.NewPackageBlob(hsr)
exists := false
contentStore := packages_module.NewContentStore()
uploadVersion, err := getOrCreateUploadVersion(ctx, &pci.PackageInfo)
if err != nil {
return nil, err
}
err = db.WithTx(ctx, func(ctx context.Context) error {
if err := packages_service.CheckSizeQuotaExceeded(ctx, pci.Creator, pci.Owner, packages_model.TypeContainer, hsr.Size()); err != nil {
return err
}
pb, exists, err = packages_model.GetOrInsertBlob(ctx, pb)
if err != nil {
log.Error("Error inserting package blob: %v", err)
return err
}
// FIXME: Workaround to be removed in v1.20
// https://github.com/go-gitea/gitea/issues/19586
if exists {
err = contentStore.Has(packages_module.BlobHash256Key(pb.HashSHA256))
if err != nil && (errors.Is(err, util.ErrNotExist) || errors.Is(err, os.ErrNotExist)) {
log.Debug("Package registry inconsistent: blob %s does not exist on file system", pb.HashSHA256)
exists = false
}
}
if !exists {
if err := contentStore.Save(packages_module.BlobHash256Key(pb.HashSHA256), hsr, hsr.Size()); err != nil {
log.Error("Error saving package blob in content store: %v", err)
return err
}
}
return createFileForBlob(ctx, uploadVersion, pb)
})
if err != nil {
if !exists {
if err := contentStore.Delete(packages_module.BlobHash256Key(pb.HashSHA256)); err != nil {
log.Error("Error deleting package blob from content store: %v", err)
}
}
return nil, err
}
return pb, nil
}
// mountBlob mounts the specific blob to a different package
func mountBlob(ctx context.Context, pi *packages_service.PackageInfo, pb *packages_model.PackageBlob) error {
uploadVersion, err := getOrCreateUploadVersion(ctx, pi)
if err != nil {
return err
}
return db.WithTx(ctx, func(ctx context.Context) error {
return createFileForBlob(ctx, uploadVersion, pb)
})
}
func getOrCreateUploadVersion(ctx context.Context, pi *packages_service.PackageInfo) (*packages_model.PackageVersion, error) {
var uploadVersion *packages_model.PackageVersion
// FIXME: Replace usage of mutex with database transaction
// https://github.com/go-gitea/gitea/pull/21862
uploadVersionMutex.Lock()
err := db.WithTx(ctx, func(ctx context.Context) error {
created := true
p := &packages_model.Package{
OwnerID: pi.Owner.ID,
Type: packages_model.TypeContainer,
Name: strings.ToLower(pi.Name),
LowerName: strings.ToLower(pi.Name),
}
var err error
if p, err = packages_model.TryInsertPackage(ctx, p); err != nil {
if err == packages_model.ErrDuplicatePackage {
created = false
} else {
log.Error("Error inserting package: %v", err)
return err
}
}
if created {
if _, err := packages_model.InsertProperty(ctx, packages_model.PropertyTypePackage, p.ID, container_module.PropertyRepository, strings.ToLower(pi.Owner.LowerName+"/"+pi.Name)); err != nil {
log.Error("Error setting package property: %v", err)
return err
}
}
pv := &packages_model.PackageVersion{
PackageID: p.ID,
CreatorID: pi.Owner.ID,
Version: container_model.UploadVersion,
LowerVersion: container_model.UploadVersion,
IsInternal: true,
MetadataJSON: "null",
}
if pv, err = packages_model.GetOrInsertVersion(ctx, pv); err != nil {
if err != packages_model.ErrDuplicatePackageVersion {
log.Error("Error inserting package: %v", err)
return err
}
}
uploadVersion = pv
return nil
})
uploadVersionMutex.Unlock()
return uploadVersion, err
}
func createFileForBlob(ctx context.Context, pv *packages_model.PackageVersion, pb *packages_model.PackageBlob) error {
filename := strings.ToLower(fmt.Sprintf("sha256_%s", pb.HashSHA256))
pf := &packages_model.PackageFile{
VersionID: pv.ID,
BlobID: pb.ID,
Name: filename,
LowerName: filename,
CompositeKey: packages_model.EmptyFileKey,
}
var err error
if pf, err = packages_model.TryInsertFile(ctx, pf); err != nil {
if err == packages_model.ErrDuplicatePackageFile {
return nil
}
log.Error("Error inserting package file: %v", err)
return err
}
if _, err := packages_model.InsertProperty(ctx, packages_model.PropertyTypeFile, pf.ID, container_module.PropertyDigest, digestFromPackageBlob(pb)); err != nil {
log.Error("Error setting package file property: %v", err)
return err
}
return nil
}
func deleteBlob(ctx context.Context, ownerID int64, image, digest string) error {
return db.WithTx(ctx, func(ctx context.Context) error {
pfds, err := container_model.GetContainerBlobs(ctx, &container_model.BlobSearchOptions{
OwnerID: ownerID,
Image: image,
Digest: digest,
})
if err != nil {
return err
}
for _, file := range pfds {
if err := packages_service.DeletePackageFile(ctx, file.File); err != nil {
return err
}
}
return nil
})
}
func digestFromHashSummer(h packages_module.HashSummer) string {
_, _, hashSHA256, _ := h.Sums()
return "sha256:" + hex.EncodeToString(hashSHA256)
}
func digestFromPackageBlob(pb *packages_model.PackageBlob) string {
return "sha256:" + pb.HashSHA256
}
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