44 lines
1.1 KiB
Go
44 lines
1.1 KiB
Go
package supervisor
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import (
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"fmt"
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"io/ioutil"
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"log"
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"net"
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"os/exec"
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"path/filepath"
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"time"
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"github.com/docker/containerd/api/shim"
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"google.golang.org/grpc"
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"google.golang.org/grpc/grpclog"
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)
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func newShimClient(root string) (shim.ShimClient, error) {
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// TODO: start the shim process
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cmd := exec.Command("containerd-shim")
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if err := cmd.Start(); err != nil {
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return nil, err
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}
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cmd.Dir = root
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socket := filepath.Join(root, "shim.sock")
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return connectToShim(socket)
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}
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func connectToShim(socket string) (shim.ShimClient, error) {
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// reset the logger for grpc to log to dev/null so that it does not mess with our stdio
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grpclog.SetLogger(log.New(ioutil.Discard, "", log.LstdFlags))
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dialOpts := []grpc.DialOption{grpc.WithInsecure(), grpc.WithTimeout(100 * time.Second)}
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dialOpts = append(dialOpts,
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grpc.WithDialer(func(addr string, timeout time.Duration) (net.Conn, error) {
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return net.DialTimeout("unix", socket, timeout)
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},
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))
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// FIXME: probably need a retry here
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conn, err := grpc.Dial(fmt.Sprintf("unix://%s", socket), dialOpts...)
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if err != nil {
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return nil, err
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}
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return shim.NewShimClient(conn), nil
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}
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