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util.go
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util.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 gc
import (
"context"
"github.com/goharbor/harbor/src/lib/cache"
"github.com/goharbor/harbor/src/lib/errors"
"github.com/goharbor/harbor/src/pkg/registry"
)
// delKeys ...
func delKeys(ctx context.Context, c cache.Cache, pattern string) error {
iter, err := c.Scan(ctx, pattern)
if err != nil {
return errors.Wrap(err, "failed to scan keys")
}
for iter.Next(ctx) {
if err := c.Delete(ctx, iter.Val()); err != nil {
return errors.Wrap(err, "failed to clean registry cache")
}
}
return nil
}
// v2DeleteManifest calls the registry API to remove manifest
func v2DeleteManifest(repository, digest string) error {
exist, _, err := registry.Cli.ManifestExist(repository, digest)
if err != nil {
return err
}
// it could be happened at remove manifest success but fail to delete harbor DB.
// when the GC job executes again, the manifest should not exist.
if !exist {
return nil
}
return registry.Cli.DeleteManifest(repository, digest)
}
// ignoreNotFound ignores the NotFoundErr error
func ignoreNotFound(f func() error) error {
if err := f(); err != nil && !errors.IsNotFoundErr(err) {
return err
}
return nil
}
// divide if it is divisible, it gives the quotient. if it's not, it gives the remainder.
func divide(a, b int) (int, error) {
if b == 0 {
return 0, errors.New("the divided cannot be zero")
}
quotient := a / b
remainder := a % b
if quotient == 0 {
return remainder, nil
}
return quotient, nil
}