зеркало из https://github.com/microsoft/docker.git
beam/examples/beamsh: simple 'exec' command
Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
This commit is contained in:
Родитель
5689792171
Коммит
ab2010cfd3
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@ -4,6 +4,7 @@ import (
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"io"
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"fmt"
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"os"
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"os/exec"
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"github.com/dotcloud/docker/pkg/dockerscript"
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"github.com/dotcloud/docker/pkg/beam"
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"github.com/dotcloud/docker/pkg/beam/data"
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@ -182,6 +183,36 @@ func CmdTrace(args []string, f *os.File) {
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}
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func CmdExec(args []string, f *os.File) {
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resp, err := beam.FdConn(int(f.Fd()))
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if err != nil {
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Fatal(err)
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return
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}
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defer resp.Close()
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cmd := exec.Command(args[1], args[2:]...)
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Logf("EXEC %s %s\n", cmd.Path, cmd.Args)
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stdoutR, stdoutW, err := os.Pipe()
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if err != nil {
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Fatal(err)
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return
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}
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cmd.Stdout = stdoutW
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stderrR, stderrW, err := os.Pipe()
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if err != nil {
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Fatal(err)
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return
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}
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cmd.Stderr = stderrW
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if err := beam.Send(resp, data.Empty().Set("cmd", "log", "stdout").Bytes(), stdoutR); err != nil {
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Fatal(err)
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}
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if err := beam.Send(resp, data.Empty().Set("cmd", "log", "stderr").Bytes(), stderrR); err != nil {
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Fatal(err)
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}
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cmd.Run()
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}
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func CmdLog(args []string, f *os.File) {
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defer Debugf("CmdLog done\n")
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var name string
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@ -319,6 +350,8 @@ func builtinsHandler(args []string, attachment *os.File) {
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CmdLog(args, attachment)
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} else if args[0] == "trace" {
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CmdTrace(args, attachment)
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} else if args[0] == "exec" {
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CmdExec(args, attachment)
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}
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}
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