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63a79c9e41
* feat(cnbBuild) generate SBOM files with syft Co-authored-by: Pavel Busko <pavel.busko@sap.com> Co-authored-by: Sumit Kulhadia <sumit.kulhadia@sap.com>
100 lines
3.2 KiB
Go
100 lines
3.2 KiB
Go
// Package cnbutils provides utility functions to interact with Buildpacks
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package cnbutils
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import (
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"encoding/json"
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"os"
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"path/filepath"
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"github.com/SAP/jenkins-library/pkg/log"
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"github.com/pkg/errors"
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)
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const bpCacheDir = "/tmp/buildpacks_cache"
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type BuildPackMetadata struct {
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ID string `toml:"id,omitempty" json:"id,omitempty" yaml:"id,omitempty"`
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Name string `toml:"name,omitempty" json:"name,omitempty" yaml:"name,omitempty"`
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Version string `toml:"version,omitempty" json:"version,omitempty" yaml:"version,omitempty"`
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Description string `toml:"description,omitempty" json:"description,omitempty" yaml:"description,omitempty"`
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Homepage string `toml:"homepage,omitempty" json:"homepage,omitempty" yaml:"homepage,omitempty"`
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Keywords []string `toml:"keywords,omitempty" json:"keywords,omitempty" yaml:"keywords,omitempty"`
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Licenses []License `toml:"licenses,omitempty" json:"licenses,omitempty" yaml:"licenses,omitempty"`
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}
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type License struct {
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Type string `toml:"type" json:"type"`
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URI string `toml:"uri" json:"uri"`
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}
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func DownloadBuildpacks(path string, bpacks []string, dockerCreds string, utils BuildUtils) (Order, error) {
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if dockerCreds != "" {
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os.Setenv("DOCKER_CONFIG", filepath.Dir(dockerCreds))
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}
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var orderEntry OrderEntry
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order := Order{
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Utils: utils,
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}
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err := utils.MkdirAll(bpCacheDir, os.ModePerm)
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if err != nil {
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return Order{}, errors.Wrap(err, "failed to create temp directory for buildpack cache")
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}
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for _, bpack := range bpacks {
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var bpackMeta BuildPackMetadata
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imageInfo, err := utils.GetRemoteImageInfo(bpack)
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if err != nil {
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return Order{}, errors.Wrap(err, "failed to get remote image info of buildpack")
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}
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hash, err := imageInfo.Digest()
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if err != nil {
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return Order{}, errors.Wrap(err, "failed to get image digest")
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}
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cacheDir := filepath.Join(bpCacheDir, hash.String())
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cacheExists, err := utils.DirExists(cacheDir)
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if err != nil {
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return Order{}, errors.Wrapf(err, "failed to check if cache dir '%s' exists", cacheDir)
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}
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if cacheExists {
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log.Entry().Infof("Using cached buildpack '%s'", bpack)
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} else {
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err := utils.MkdirAll(cacheDir, os.ModePerm)
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if err != nil {
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return Order{}, errors.Wrap(err, "failed to create temp directory for buildpack cache")
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}
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log.Entry().Infof("Downloading buildpack '%s' to %s", bpack, cacheDir)
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img, err := utils.DownloadImageContent(bpack, cacheDir)
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if err != nil {
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return Order{}, errors.Wrapf(err, "failed download buildpack image '%s'", bpack)
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}
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imageInfo = img
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}
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imgConf, err := imageInfo.ConfigFile()
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if err != nil {
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return Order{}, errors.Wrapf(err, "failed to read '%s' image config", bpack)
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}
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err = json.Unmarshal([]byte(imgConf.Config.Labels["io.buildpacks.buildpackage.metadata"]), &bpackMeta)
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if err != nil {
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return Order{}, errors.Wrapf(err, "failed unmarshal '%s' image label", bpack)
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}
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log.Entry().Debugf("Buildpack metadata: '%v'", bpackMeta)
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orderEntry.Group = append(orderEntry.Group, bpackMeta)
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err = CopyProject(filepath.Join(cacheDir, "cnb/buildpacks"), path, nil, nil, utils)
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if err != nil {
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return Order{}, err
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}
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}
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order.Order = []OrderEntry{orderEntry}
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return order, nil
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}
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