132 lines
3.2 KiB
Go
132 lines
3.2 KiB
Go
package main
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import (
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gocontext "context"
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"fmt"
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"io/ioutil"
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"os"
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"os/signal"
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"path/filepath"
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"strconv"
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"strings"
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"syscall"
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"github.com/Sirupsen/logrus"
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contentapi "github.com/containerd/containerd/api/services/content"
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"github.com/containerd/containerd/api/services/execution"
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imagesapi "github.com/containerd/containerd/api/services/images"
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rootfsapi "github.com/containerd/containerd/api/services/rootfs"
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"github.com/containerd/containerd/api/types/container"
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"github.com/containerd/containerd/content"
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"github.com/containerd/containerd/images"
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contentservice "github.com/containerd/containerd/services/content"
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imagesservice "github.com/containerd/containerd/services/images"
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"github.com/urfave/cli"
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"google.golang.org/grpc"
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)
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var grpcConn *grpc.ClientConn
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func getExecutionService(context *cli.Context) (execution.ContainerServiceClient, error) {
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conn, err := getGRPCConnection(context)
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if err != nil {
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return nil, err
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}
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return execution.NewContainerServiceClient(conn), nil
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}
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func getContentProvider(context *cli.Context) (content.Provider, error) {
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conn, err := getGRPCConnection(context)
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if err != nil {
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return nil, err
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}
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return contentservice.NewProviderFromClient(contentapi.NewContentClient(conn)), nil
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}
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func getRootFSService(context *cli.Context) (rootfsapi.RootFSClient, error) {
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conn, err := getGRPCConnection(context)
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if err != nil {
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return nil, err
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}
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return rootfsapi.NewRootFSClient(conn), nil
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}
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func getImageStore(clicontext *cli.Context) (images.Store, error) {
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conn, err := getGRPCConnection(clicontext)
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if err != nil {
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return nil, err
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}
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return imagesservice.NewStoreFromClient(imagesapi.NewImagesClient(conn)), nil
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}
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func getTempDir(id string) (string, error) {
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err := os.MkdirAll(filepath.Join(os.TempDir(), "ctr"), 0700)
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if err != nil {
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return "", err
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}
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tmpDir, err := ioutil.TempDir(filepath.Join(os.TempDir(), "ctr"), fmt.Sprintf("%s-", id))
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if err != nil {
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return "", err
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}
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return tmpDir, nil
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}
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func waitContainer(events execution.ContainerService_EventsClient, id string, pid uint32) (uint32, error) {
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for {
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e, err := events.Recv()
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if err != nil {
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return 255, err
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}
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if e.Type != container.Event_EXIT {
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continue
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}
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if e.ID == id && e.Pid == pid {
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return e.ExitStatus, nil
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}
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}
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}
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func forwardAllSignals(containers execution.ContainerServiceClient, id string) chan os.Signal {
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sigc := make(chan os.Signal, 128)
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signal.Notify(sigc)
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go func() {
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for s := range sigc {
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logrus.Debug("Forwarding signal ", s)
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killRequest := &execution.KillRequest{
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ID: id,
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Signal: uint32(s.(syscall.Signal)),
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All: false,
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}
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_, err := containers.Kill(gocontext.Background(), killRequest)
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if err != nil {
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logrus.Fatalln(err)
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}
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}
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}()
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return sigc
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}
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func parseSignal(rawSignal string) (syscall.Signal, error) {
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s, err := strconv.Atoi(rawSignal)
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if err == nil {
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sig := syscall.Signal(s)
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for _, msig := range signalMap {
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if sig == msig {
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return sig, nil
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}
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}
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return -1, fmt.Errorf("unknown signal %q", rawSignal)
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}
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signal, ok := signalMap[strings.TrimPrefix(strings.ToUpper(rawSignal), "SIG")]
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if !ok {
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return -1, fmt.Errorf("unknown signal %q", rawSignal)
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}
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return signal, nil
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}
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func stopCatch(sigc chan os.Signal) {
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signal.Stop(sigc)
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close(sigc)
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}
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