mirror of https://github.com/containers/podman.git
90 lines
2.8 KiB
Go
90 lines
2.8 KiB
Go
package libpod
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import (
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"context"
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"io"
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"io/ioutil"
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"os"
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buildahDefine "github.com/containers/buildah/define"
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"github.com/containers/buildah/imagebuildah"
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"github.com/containers/common/libimage"
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"github.com/containers/image/v5/docker/reference"
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"github.com/containers/podman/v3/libpod/define"
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"github.com/containers/podman/v3/libpod/events"
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"github.com/containers/podman/v3/pkg/util"
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"github.com/pkg/errors"
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"github.com/sirupsen/logrus"
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)
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// Runtime API
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// RemoveContainersForImageCallback returns a callback that can be used in
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// `libimage`. When forcefully removing images, containers using the image
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// should be removed as well. The callback allows for more graceful removal as
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// we can use the libpod-internal removal logic.
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func (r *Runtime) RemoveContainersForImageCallback(ctx context.Context) libimage.RemoveContainerFunc {
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return func(imageID string) error {
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r.lock.Lock()
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defer r.lock.Unlock()
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if !r.valid {
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return define.ErrRuntimeStopped
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}
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ctrs, err := r.state.AllContainers()
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if err != nil {
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return err
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}
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for _, ctr := range ctrs {
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if ctr.config.RootfsImageID == imageID {
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if err := r.removeContainer(ctx, ctr, true, false, false); err != nil {
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return errors.Wrapf(err, "error removing image %s: container %s using image could not be removed", imageID, ctr.ID())
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}
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}
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}
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// Note that `libimage` will take care of removing any leftover
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// containers from the storage.
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return nil
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}
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}
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// newBuildEvent creates a new event based on completion of a built image
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func (r *Runtime) newImageBuildCompleteEvent(idOrName string) {
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e := events.NewEvent(events.Build)
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e.Type = events.Image
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e.Name = idOrName
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if err := r.eventer.Write(e); err != nil {
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logrus.Errorf("unable to write build event: %q", err)
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}
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}
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// Build adds the runtime to the imagebuildah call
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func (r *Runtime) Build(ctx context.Context, options buildahDefine.BuildOptions, dockerfiles ...string) (string, reference.Canonical, error) {
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if options.Runtime == "" {
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options.Runtime = r.GetOCIRuntimePath()
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}
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id, ref, err := imagebuildah.BuildDockerfiles(ctx, r.store, options, dockerfiles...)
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// Write event for build completion
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r.newImageBuildCompleteEvent(id)
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return id, ref, err
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}
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// DownloadFromFile reads all of the content from the reader and temporarily
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// saves in it $TMPDIR/importxyz, which is deleted after the image is imported
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func DownloadFromFile(reader *os.File) (string, error) {
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outFile, err := ioutil.TempFile(util.Tmpdir(), "import")
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if err != nil {
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return "", errors.Wrap(err, "error creating file")
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}
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defer outFile.Close()
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logrus.Debugf("saving %s to %s", reader.Name(), outFile.Name())
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_, err = io.Copy(outFile, reader)
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if err != nil {
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return "", errors.Wrapf(err, "error saving %s to %s", reader.Name(), outFile.Name())
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}
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return outFile.Name(), nil
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}
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