79 lines
2.2 KiB
Go
79 lines
2.2 KiB
Go
/*
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Copyright 2018 Google LLC
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package cache
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import (
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"fmt"
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"io/ioutil"
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"path"
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"github.com/GoogleContainerTools/kaniko/pkg/config"
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"github.com/google/go-containerregistry/pkg/name"
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"github.com/google/go-containerregistry/pkg/v1/remote"
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"github.com/google/go-containerregistry/pkg/v1/tarball"
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"github.com/pkg/errors"
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"github.com/sirupsen/logrus"
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)
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// WarmCache populates the cache
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func WarmCache(opts *config.WarmerOptions) error {
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cacheDir := opts.CacheDir
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images := opts.Images
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logrus.Debugf("%s\n", cacheDir)
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logrus.Debugf("%s\n", images)
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for _, image := range images {
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cacheRef, err := name.NewTag(image, name.WeakValidation)
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if err != nil {
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return errors.Wrap(err, fmt.Sprintf("Failed to verify image name: %s", image))
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}
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img, err := remote.Image(cacheRef)
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if err != nil || img == nil {
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return errors.Wrap(err, fmt.Sprintf("Failed to retrieve image: %s", image))
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}
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digest, err := img.Digest()
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if err != nil {
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return errors.Wrap(err, fmt.Sprintf("Failed to retrieve digest: %s", image))
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}
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cachePath := path.Join(cacheDir, digest.String())
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if !opts.Force {
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_, err := LocalSource(&opts.CacheOptions, digest.String())
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if err == nil {
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continue
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}
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}
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err = tarball.WriteToFile(cachePath, cacheRef, img)
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if err != nil {
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return errors.Wrap(err, fmt.Sprintf("Failed to write %s to cache", image))
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}
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mfst, err := img.RawManifest()
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if err != nil {
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return errors.Wrap(err, fmt.Sprintf("Failed to retrieve manifest for %s", image))
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}
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mfstPath := cachePath + ".json"
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if err := ioutil.WriteFile(mfstPath, mfst, 0666); err != nil {
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return errors.Wrap(err, fmt.Sprintf("Failed to save manifest for %s", image))
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}
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logrus.Debugf("Wrote %s to cache", image)
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}
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return nil
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}
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