2013-01-19 04:13:39 +04:00
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package docker
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import (
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"encoding/json"
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2013-08-15 22:38:17 +04:00
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"errors"
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2013-03-21 11:25:00 +04:00
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"fmt"
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2013-11-01 03:57:45 +04:00
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"github.com/dotcloud/docker/archive"
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2014-01-17 02:00:18 +04:00
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"github.com/dotcloud/docker/engine"
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2014-01-10 04:03:22 +04:00
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"github.com/dotcloud/docker/execdriver"
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2013-11-19 13:36:54 +04:00
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"github.com/dotcloud/docker/graphdriver"
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2014-02-15 06:18:16 +04:00
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"github.com/dotcloud/docker/links"
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2014-02-12 04:48:44 +04:00
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"github.com/dotcloud/docker/nat"
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2013-12-24 03:42:37 +04:00
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"github.com/dotcloud/docker/pkg/term"
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2014-02-12 08:04:39 +04:00
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"github.com/dotcloud/docker/runconfig"
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2013-05-15 02:37:35 +04:00
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"github.com/dotcloud/docker/utils"
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2013-01-30 01:50:27 +04:00
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"github.com/kr/pty"
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2013-01-19 04:13:39 +04:00
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"io"
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"io/ioutil"
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2013-01-22 06:03:23 +04:00
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"log"
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2013-01-19 04:13:39 +04:00
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"os"
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"path"
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2013-04-20 06:29:13 +04:00
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"strings"
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2013-11-22 00:21:03 +04:00
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"sync"
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2013-01-19 04:13:39 +04:00
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"syscall"
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2013-01-22 06:03:23 +04:00
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"time"
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2013-01-19 04:13:39 +04:00
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)
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2013-11-29 19:40:44 +04:00
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var (
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2014-02-15 05:15:40 +04:00
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ErrNotATTY = errors.New("The PTY is not a file")
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ErrNoTTY = errors.New("No PTY found")
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ErrContainerStart = errors.New("The container failed to start. Unknown error")
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ErrContainerStartTimeout = errors.New("The container failed to start due to timed out.")
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2013-11-29 19:40:44 +04:00
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)
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2013-01-19 04:13:39 +04:00
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type Container struct {
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2013-11-22 00:21:03 +04:00
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sync.Mutex
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2013-11-08 03:58:03 +04:00
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root string // Path to the "home" of the container, including metadata.
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2014-01-30 19:43:53 +04:00
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basefs string // Path to the graphdriver mountpoint
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2013-03-21 11:25:00 +04:00
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2013-06-04 22:00:22 +04:00
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ID string
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2013-01-22 23:13:22 +04:00
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Created time.Time
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2013-01-19 04:13:39 +04:00
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Path string
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Args []string
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2014-02-12 08:04:39 +04:00
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Config *runconfig.Config
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2013-03-21 11:25:00 +04:00
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State State
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Image string
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2013-01-19 04:13:39 +04:00
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2013-02-28 23:51:14 +04:00
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NetworkSettings *NetworkSettings
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2013-01-19 04:13:39 +04:00
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2013-04-11 05:23:34 +04:00
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ResolvConfPath string
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2013-09-09 22:57:25 +04:00
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HostnamePath string
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HostsPath string
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2013-10-29 03:58:59 +04:00
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Name string
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2013-11-15 10:52:08 +04:00
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Driver string
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2013-04-11 05:23:34 +04:00
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2014-01-21 04:05:07 +04:00
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command *execdriver.Command
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2013-05-15 02:37:35 +04:00
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stdout *utils.WriteBroadcaster
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stderr *utils.WriteBroadcaster
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2013-04-11 05:23:34 +04:00
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stdin io.ReadCloser
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stdinPipe io.WriteCloser
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2013-04-04 23:12:22 +04:00
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ptyMaster io.Closer
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2013-03-30 20:05:53 +04:00
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2013-03-29 19:41:48 +04:00
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runtime *Runtime
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2013-04-09 18:57:59 +04:00
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waitLock chan struct{}
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2013-04-11 03:10:53 +04:00
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Volumes map[string]string
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2013-07-26 12:10:42 +04:00
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// Store rw/ro in a separate structure to preserve reverse-compatibility on-disk.
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2013-06-25 10:30:48 +04:00
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// Easier than migrating older container configs :)
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2013-11-01 01:58:43 +04:00
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VolumesRW map[string]bool
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2014-02-12 08:04:39 +04:00
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hostConfig *runconfig.HostConfig
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2013-10-05 06:25:15 +04:00
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2014-02-15 06:18:16 +04:00
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activeLinks map[string]*links.Link
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2013-01-19 04:13:39 +04:00
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}
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2014-02-12 04:48:44 +04:00
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// FIXME: move deprecated port stuff to nat to clean up the core.
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2013-10-05 06:25:15 +04:00
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type PortMapping map[string]string // Deprecated
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2013-06-12 02:46:23 +04:00
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2013-02-28 23:51:14 +04:00
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type NetworkSettings struct {
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2013-06-04 22:00:22 +04:00
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IPAddress string
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IPPrefixLen int
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2013-02-28 23:51:14 +04:00
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Gateway string
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2013-04-04 02:05:03 +04:00
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Bridge string
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2013-10-05 06:25:15 +04:00
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PortMapping map[string]PortMapping // Deprecated
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2014-02-12 04:48:44 +04:00
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Ports nat.PortMap
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2013-02-26 02:06:22 +04:00
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}
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2014-01-17 02:00:18 +04:00
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func (settings *NetworkSettings) PortMappingAPI() *engine.Table {
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var outs = engine.NewTable("", 0)
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2013-10-05 06:25:15 +04:00
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for port, bindings := range settings.Ports {
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2014-02-12 04:48:44 +04:00
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p, _ := nat.ParsePort(port.Port())
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2013-10-05 06:25:15 +04:00
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if len(bindings) == 0 {
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2014-01-17 02:00:18 +04:00
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out := &engine.Env{}
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out.SetInt("PublicPort", p)
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out.Set("Type", port.Proto())
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outs.Add(out)
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2013-10-05 06:25:15 +04:00
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continue
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}
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for _, binding := range bindings {
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2014-01-17 02:00:18 +04:00
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out := &engine.Env{}
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2014-02-12 04:48:44 +04:00
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h, _ := nat.ParsePort(binding.HostPort)
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2014-01-17 02:00:18 +04:00
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out.SetInt("PrivatePort", p)
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out.SetInt("PublicPort", h)
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out.Set("Type", port.Proto())
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out.Set("IP", binding.HostIp)
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outs.Add(out)
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2013-10-05 06:25:15 +04:00
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}
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2013-06-12 02:46:23 +04:00
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}
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2014-01-17 02:00:18 +04:00
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return outs
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2013-04-20 06:29:13 +04:00
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}
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2013-04-25 00:37:00 +04:00
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// Inject the io.Reader at the given path. Note: do not close the reader
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func (container *Container) Inject(file io.Reader, pth string) error {
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2013-12-06 15:15:14 +04:00
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if err := container.Mount(); err != nil {
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2013-11-08 00:30:56 +04:00
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return fmt.Errorf("inject: error mounting container %s: %s", container.ID, err)
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2013-04-25 00:51:28 +04:00
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}
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2013-12-06 01:18:02 +04:00
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defer container.Unmount()
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2013-11-08 03:26:52 +04:00
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2013-11-06 09:44:52 +04:00
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// Return error if path exists
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2014-01-30 19:43:53 +04:00
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destPath := path.Join(container.basefs, pth)
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2013-11-09 00:06:15 +04:00
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if _, err := os.Stat(destPath); err == nil {
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2013-11-06 09:44:52 +04:00
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// Since err is nil, the path could be stat'd and it exists
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return fmt.Errorf("%s exists", pth)
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2013-11-08 00:19:24 +04:00
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} else if !os.IsNotExist(err) {
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2013-11-06 09:44:52 +04:00
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// Expect err might be that the file doesn't exist, so
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2013-11-08 00:19:24 +04:00
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// if it's some other error, return that.
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2013-11-06 09:44:52 +04:00
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return err
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}
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2013-11-09 00:06:15 +04:00
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// Make sure the directory exists
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2014-01-30 19:43:53 +04:00
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if err := os.MkdirAll(path.Join(container.basefs, path.Dir(pth)), 0755); err != nil {
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2013-11-09 00:06:15 +04:00
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return err
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}
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dest, err := os.Create(destPath)
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2013-04-25 00:37:00 +04:00
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if err != nil {
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return err
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}
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2013-11-09 00:06:15 +04:00
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defer dest.Close()
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2013-04-25 00:37:00 +04:00
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if _, err := io.Copy(dest, file); err != nil {
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return err
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}
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return nil
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}
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2013-01-29 15:24:31 +04:00
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func (container *Container) When() time.Time {
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return container.Created
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}
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2013-03-21 11:25:00 +04:00
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func (container *Container) FromDisk() error {
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data, err := ioutil.ReadFile(container.jsonPath())
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2013-01-26 02:39:02 +04:00
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if err != nil {
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return err
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}
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2013-03-21 11:25:00 +04:00
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// Load container settings
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2013-07-29 20:40:35 +04:00
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// udp broke compat of docker.PortMapping, but it's not used when loading a container, we can skip it
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if err := json.Unmarshal(data, container); err != nil && !strings.Contains(err.Error(), "docker.PortMapping") {
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2013-01-26 02:39:02 +04:00
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return err
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}
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2013-11-01 01:58:43 +04:00
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return container.readHostConfig()
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2013-01-26 02:39:02 +04:00
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}
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2013-03-21 11:25:00 +04:00
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func (container *Container) ToDisk() (err error) {
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2013-01-22 23:13:22 +04:00
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data, err := json.Marshal(container)
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2013-01-19 04:13:39 +04:00
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if err != nil {
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2013-01-22 23:13:22 +04:00
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return
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2013-01-19 04:13:39 +04:00
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}
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2013-11-01 01:58:43 +04:00
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err = ioutil.WriteFile(container.jsonPath(), data, 0666)
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if err != nil {
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return
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}
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return container.writeHostConfig()
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2013-01-19 04:13:39 +04:00
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}
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2013-11-01 01:58:43 +04:00
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func (container *Container) readHostConfig() error {
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2014-02-12 08:04:39 +04:00
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container.hostConfig = &runconfig.HostConfig{}
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2013-11-01 01:58:43 +04:00
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// If the hostconfig file does not exist, do not read it.
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// (We still have to initialize container.hostConfig,
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// but that's OK, since we just did that above.)
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_, err := os.Stat(container.hostConfigPath())
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if os.IsNotExist(err) {
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return nil
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}
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2013-07-02 16:19:25 +04:00
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data, err := ioutil.ReadFile(container.hostConfigPath())
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if err != nil {
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2013-11-01 01:58:43 +04:00
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return err
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2013-07-02 16:19:25 +04:00
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}
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2013-11-01 01:58:43 +04:00
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return json.Unmarshal(data, container.hostConfig)
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2013-07-02 16:19:25 +04:00
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}
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2013-11-01 01:58:43 +04:00
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func (container *Container) writeHostConfig() (err error) {
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data, err := json.Marshal(container.hostConfig)
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2013-07-02 16:19:25 +04:00
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if err != nil {
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return
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}
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return ioutil.WriteFile(container.hostConfigPath(), data, 0666)
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}
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2013-08-14 02:40:23 +04:00
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func (container *Container) generateEnvConfig(env []string) error {
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2013-08-15 04:14:30 +04:00
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data, err := json.Marshal(env)
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2013-08-14 02:40:23 +04:00
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if err != nil {
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return err
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}
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2013-12-18 02:04:37 +04:00
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p, err := container.EnvConfigPath()
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if err != nil {
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return err
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}
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ioutil.WriteFile(p, data, 0600)
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2013-08-14 02:40:23 +04:00
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return nil
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}
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2014-01-14 03:37:17 +04:00
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func (container *Container) setupPty() error {
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2013-04-04 23:12:22 +04:00
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ptyMaster, ptySlave, err := pty.Open()
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2013-01-30 03:17:20 +04:00
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if err != nil {
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2014-01-14 03:37:17 +04:00
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return err
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2013-01-30 03:17:20 +04:00
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}
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2013-04-04 23:12:22 +04:00
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container.ptyMaster = ptyMaster
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2014-01-21 04:05:07 +04:00
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container.command.Stdout = ptySlave
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container.command.Stderr = ptySlave
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2014-02-14 05:23:09 +04:00
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container.command.Console = ptySlave.Name()
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2013-01-30 03:17:20 +04:00
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// Copy the PTYs to our broadcasters
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go func() {
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2013-04-02 12:45:17 +04:00
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defer container.stdout.CloseWriters()
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2013-10-16 21:41:36 +04:00
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utils.Debugf("startPty: begin of stdout pipe")
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2013-04-04 23:12:22 +04:00
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io.Copy(container.stdout, ptyMaster)
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2013-10-16 21:41:36 +04:00
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utils.Debugf("startPty: end of stdout pipe")
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2013-01-30 03:17:20 +04:00
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}()
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// stdin
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if container.Config.OpenStdin {
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2014-01-21 04:05:07 +04:00
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container.command.Stdin = ptySlave
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container.command.SysProcAttr.Setctty = true
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2013-01-30 03:17:20 +04:00
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go func() {
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defer container.stdin.Close()
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2013-10-16 21:41:36 +04:00
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utils.Debugf("startPty: begin of stdin pipe")
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2013-04-04 23:12:22 +04:00
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io.Copy(ptyMaster, container.stdin)
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2013-10-16 21:41:36 +04:00
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utils.Debugf("startPty: end of stdin pipe")
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2013-01-30 03:17:20 +04:00
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}()
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}
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2014-01-14 03:37:17 +04:00
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return nil
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2013-01-30 03:17:20 +04:00
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}
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2014-01-14 03:37:17 +04:00
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func (container *Container) setupStd() error {
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2014-01-21 04:05:07 +04:00
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container.command.Stdout = container.stdout
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container.command.Stderr = container.stderr
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2013-01-30 03:17:20 +04:00
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if container.Config.OpenStdin {
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2014-01-21 04:05:07 +04:00
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stdin, err := container.command.StdinPipe()
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2013-01-30 03:17:20 +04:00
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if err != nil {
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2014-01-14 03:37:17 +04:00
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return err
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2013-01-30 03:17:20 +04:00
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}
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go func() {
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defer stdin.Close()
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2013-10-16 21:41:36 +04:00
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utils.Debugf("start: begin of stdin pipe")
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2013-01-30 03:17:20 +04:00
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io.Copy(stdin, container.stdin)
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2013-10-16 21:41:36 +04:00
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utils.Debugf("start: end of stdin pipe")
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2013-01-30 03:17:20 +04:00
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}()
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}
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2014-01-14 03:37:17 +04:00
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return nil
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2013-01-30 03:17:20 +04:00
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}
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2013-04-02 23:18:20 +04:00
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func (container *Container) Attach(stdin io.ReadCloser, stdinCloser io.Closer, stdout io.Writer, stderr io.Writer) chan error {
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var cStdout, cStderr io.ReadCloser
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2013-04-02 10:52:20 +04:00
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var nJobs int
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|
|
errors := make(chan error, 3)
|
|
|
|
if stdin != nil && container.Config.OpenStdin {
|
|
|
|
nJobs += 1
|
|
|
|
if cStdin, err := container.StdinPipe(); err != nil {
|
|
|
|
errors <- err
|
|
|
|
} else {
|
|
|
|
go func() {
|
2013-10-16 21:41:36 +04:00
|
|
|
utils.Debugf("attach: stdin: begin")
|
|
|
|
defer utils.Debugf("attach: stdin: end")
|
2013-04-02 23:19:01 +04:00
|
|
|
// No matter what, when stdin is closed (io.Copy unblock), close stdout and stderr
|
2013-04-09 19:18:16 +04:00
|
|
|
if container.Config.StdinOnce && !container.Config.Tty {
|
2013-04-02 10:52:20 +04:00
|
|
|
defer cStdin.Close()
|
2013-07-25 02:48:18 +04:00
|
|
|
} else {
|
2014-01-11 04:18:15 +04:00
|
|
|
defer func() {
|
|
|
|
if cStdout != nil {
|
|
|
|
cStdout.Close()
|
|
|
|
}
|
|
|
|
if cStderr != nil {
|
|
|
|
cStderr.Close()
|
|
|
|
}
|
|
|
|
}()
|
2013-04-02 10:52:20 +04:00
|
|
|
}
|
2013-04-04 23:57:45 +04:00
|
|
|
if container.Config.Tty {
|
2013-05-15 02:37:35 +04:00
|
|
|
_, err = utils.CopyEscapable(cStdin, stdin)
|
2013-04-04 23:57:45 +04:00
|
|
|
} else {
|
|
|
|
_, err = io.Copy(cStdin, stdin)
|
|
|
|
}
|
2013-10-25 00:00:51 +04:00
|
|
|
if err == io.ErrClosedPipe {
|
|
|
|
err = nil
|
|
|
|
}
|
2013-04-02 10:52:20 +04:00
|
|
|
if err != nil {
|
2013-10-16 21:41:36 +04:00
|
|
|
utils.Errorf("attach: stdin: %s", err)
|
2013-04-02 10:52:20 +04:00
|
|
|
}
|
2013-10-25 00:00:51 +04:00
|
|
|
errors <- err
|
2013-04-02 10:52:20 +04:00
|
|
|
}()
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if stdout != nil {
|
|
|
|
nJobs += 1
|
|
|
|
if p, err := container.StdoutPipe(); err != nil {
|
|
|
|
errors <- err
|
|
|
|
} else {
|
|
|
|
cStdout = p
|
|
|
|
go func() {
|
2013-10-16 21:41:36 +04:00
|
|
|
utils.Debugf("attach: stdout: begin")
|
|
|
|
defer utils.Debugf("attach: stdout: end")
|
2013-04-02 23:18:20 +04:00
|
|
|
// If we are in StdinOnce mode, then close stdin
|
2013-09-24 04:53:02 +04:00
|
|
|
if container.Config.StdinOnce && stdin != nil {
|
|
|
|
defer stdin.Close()
|
|
|
|
}
|
|
|
|
if stdinCloser != nil {
|
|
|
|
defer stdinCloser.Close()
|
2013-04-02 23:18:20 +04:00
|
|
|
}
|
2013-04-02 10:52:20 +04:00
|
|
|
_, err := io.Copy(stdout, cStdout)
|
2013-10-16 21:41:36 +04:00
|
|
|
if err == io.ErrClosedPipe {
|
|
|
|
err = nil
|
|
|
|
}
|
2013-04-02 10:52:20 +04:00
|
|
|
if err != nil {
|
2013-10-16 21:41:36 +04:00
|
|
|
utils.Errorf("attach: stdout: %s", err)
|
2013-04-02 10:52:20 +04:00
|
|
|
}
|
|
|
|
errors <- err
|
|
|
|
}()
|
|
|
|
}
|
2013-06-04 04:39:29 +04:00
|
|
|
} else {
|
|
|
|
go func() {
|
2013-06-05 01:35:32 +04:00
|
|
|
if stdinCloser != nil {
|
|
|
|
defer stdinCloser.Close()
|
|
|
|
}
|
|
|
|
if cStdout, err := container.StdoutPipe(); err != nil {
|
2013-10-16 21:41:36 +04:00
|
|
|
utils.Errorf("attach: stdout pipe: %s", err)
|
2013-06-05 01:35:32 +04:00
|
|
|
} else {
|
|
|
|
io.Copy(&utils.NopWriter{}, cStdout)
|
2013-06-04 04:39:29 +04:00
|
|
|
}
|
|
|
|
}()
|
2013-04-02 10:52:20 +04:00
|
|
|
}
|
|
|
|
if stderr != nil {
|
|
|
|
nJobs += 1
|
|
|
|
if p, err := container.StderrPipe(); err != nil {
|
|
|
|
errors <- err
|
|
|
|
} else {
|
|
|
|
cStderr = p
|
|
|
|
go func() {
|
2013-10-16 21:41:36 +04:00
|
|
|
utils.Debugf("attach: stderr: begin")
|
|
|
|
defer utils.Debugf("attach: stderr: end")
|
2013-04-02 23:18:20 +04:00
|
|
|
// If we are in StdinOnce mode, then close stdin
|
2013-09-24 04:53:02 +04:00
|
|
|
if container.Config.StdinOnce && stdin != nil {
|
|
|
|
defer stdin.Close()
|
|
|
|
}
|
|
|
|
if stdinCloser != nil {
|
|
|
|
defer stdinCloser.Close()
|
2013-04-02 23:18:20 +04:00
|
|
|
}
|
2013-04-02 10:52:20 +04:00
|
|
|
_, err := io.Copy(stderr, cStderr)
|
2013-10-16 21:41:36 +04:00
|
|
|
if err == io.ErrClosedPipe {
|
|
|
|
err = nil
|
|
|
|
}
|
2013-04-02 10:52:20 +04:00
|
|
|
if err != nil {
|
2013-10-16 21:41:36 +04:00
|
|
|
utils.Errorf("attach: stderr: %s", err)
|
2013-04-02 10:52:20 +04:00
|
|
|
}
|
|
|
|
errors <- err
|
|
|
|
}()
|
|
|
|
}
|
2013-06-04 04:39:29 +04:00
|
|
|
} else {
|
|
|
|
go func() {
|
2013-06-05 01:35:32 +04:00
|
|
|
if stdinCloser != nil {
|
|
|
|
defer stdinCloser.Close()
|
|
|
|
}
|
2013-06-04 04:39:29 +04:00
|
|
|
|
2013-06-10 22:08:40 +04:00
|
|
|
if cStderr, err := container.StderrPipe(); err != nil {
|
2013-10-16 21:41:36 +04:00
|
|
|
utils.Errorf("attach: stdout pipe: %s", err)
|
2013-06-05 01:35:32 +04:00
|
|
|
} else {
|
|
|
|
io.Copy(&utils.NopWriter{}, cStderr)
|
2013-06-04 04:39:29 +04:00
|
|
|
}
|
|
|
|
}()
|
2013-04-02 10:52:20 +04:00
|
|
|
}
|
2013-06-04 04:39:29 +04:00
|
|
|
|
2013-05-15 02:37:35 +04:00
|
|
|
return utils.Go(func() error {
|
2014-01-11 04:18:15 +04:00
|
|
|
defer func() {
|
|
|
|
if cStdout != nil {
|
|
|
|
cStdout.Close()
|
|
|
|
}
|
|
|
|
if cStderr != nil {
|
|
|
|
cStderr.Close()
|
|
|
|
}
|
|
|
|
}()
|
|
|
|
|
2013-10-16 21:41:36 +04:00
|
|
|
// FIXME: how to clean up the stdin goroutine without the unwanted side effect
|
2013-04-02 10:52:20 +04:00
|
|
|
// of closing the passed stdin? Add an intermediary io.Pipe?
|
|
|
|
for i := 0; i < nJobs; i += 1 {
|
2013-10-16 21:41:36 +04:00
|
|
|
utils.Debugf("attach: waiting for job %d/%d", i+1, nJobs)
|
2013-04-02 10:52:20 +04:00
|
|
|
if err := <-errors; err != nil {
|
2013-10-16 21:41:36 +04:00
|
|
|
utils.Errorf("attach: job %d returned error %s, aborting all jobs", i+1, err)
|
2013-04-02 10:52:20 +04:00
|
|
|
return err
|
|
|
|
}
|
2013-10-16 21:41:36 +04:00
|
|
|
utils.Debugf("attach: job %d completed successfully", i+1)
|
2013-04-02 10:52:20 +04:00
|
|
|
}
|
2013-10-16 21:41:36 +04:00
|
|
|
utils.Debugf("attach: all jobs completed successfully")
|
2013-04-02 10:52:20 +04:00
|
|
|
return nil
|
|
|
|
})
|
|
|
|
}
|
|
|
|
|
2014-01-21 06:07:18 +04:00
|
|
|
func populateCommand(c *Container) {
|
|
|
|
var (
|
|
|
|
en *execdriver.Network
|
|
|
|
driverConfig []string
|
|
|
|
)
|
2014-01-30 06:34:43 +04:00
|
|
|
|
2014-01-21 06:07:18 +04:00
|
|
|
if !c.Config.NetworkDisabled {
|
|
|
|
network := c.NetworkSettings
|
|
|
|
en = &execdriver.Network{
|
|
|
|
Gateway: network.Gateway,
|
|
|
|
Bridge: network.Bridge,
|
|
|
|
IPAddress: network.IPAddress,
|
|
|
|
IPPrefixLen: network.IPPrefixLen,
|
|
|
|
Mtu: c.runtime.config.Mtu,
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if lxcConf := c.hostConfig.LxcConf; lxcConf != nil {
|
|
|
|
for _, pair := range lxcConf {
|
|
|
|
driverConfig = append(driverConfig, fmt.Sprintf("%s = %s", pair.Key, pair.Value))
|
|
|
|
}
|
|
|
|
}
|
|
|
|
resources := &execdriver.Resources{
|
|
|
|
Memory: c.Config.Memory,
|
|
|
|
MemorySwap: c.Config.MemorySwap,
|
|
|
|
CpuShares: c.Config.CpuShares,
|
|
|
|
}
|
|
|
|
c.command = &execdriver.Command{
|
|
|
|
ID: c.ID,
|
|
|
|
Privileged: c.hostConfig.Privileged,
|
|
|
|
Rootfs: c.RootfsPath(),
|
|
|
|
InitPath: "/.dockerinit",
|
|
|
|
Entrypoint: c.Path,
|
|
|
|
Arguments: c.Args,
|
|
|
|
WorkingDir: c.Config.WorkingDir,
|
|
|
|
Network: en,
|
|
|
|
Tty: c.Config.Tty,
|
|
|
|
User: c.Config.User,
|
|
|
|
Config: driverConfig,
|
|
|
|
Resources: resources,
|
|
|
|
}
|
|
|
|
c.command.SysProcAttr = &syscall.SysProcAttr{Setsid: true}
|
|
|
|
}
|
|
|
|
|
2013-11-01 01:58:43 +04:00
|
|
|
func (container *Container) Start() (err error) {
|
2013-11-22 00:21:03 +04:00
|
|
|
container.Lock()
|
|
|
|
defer container.Unlock()
|
|
|
|
|
|
|
|
if container.State.IsRunning() {
|
2013-11-12 06:15:38 +04:00
|
|
|
return fmt.Errorf("The container %s is already running.", container.ID)
|
|
|
|
}
|
2014-01-30 06:34:43 +04:00
|
|
|
|
2013-10-17 00:12:56 +04:00
|
|
|
defer func() {
|
|
|
|
if err != nil {
|
|
|
|
container.cleanup()
|
2013-10-16 23:01:55 +04:00
|
|
|
}
|
2013-10-17 00:12:56 +04:00
|
|
|
}()
|
2014-01-30 06:34:43 +04:00
|
|
|
|
2013-12-06 15:15:14 +04:00
|
|
|
if err := container.Mount(); err != nil {
|
2013-10-17 00:12:56 +04:00
|
|
|
return err
|
|
|
|
}
|
2014-01-30 06:34:43 +04:00
|
|
|
|
|
|
|
if container.runtime.config.DisableNetwork {
|
2013-10-17 00:12:56 +04:00
|
|
|
container.Config.NetworkDisabled = true
|
2013-10-10 20:44:48 +04:00
|
|
|
container.buildHostnameAndHostsFiles("127.0.1.1")
|
2013-10-17 00:12:56 +04:00
|
|
|
} else {
|
2013-11-01 01:58:43 +04:00
|
|
|
if err := container.allocateNetwork(); err != nil {
|
2013-07-22 04:49:09 +04:00
|
|
|
return err
|
|
|
|
}
|
2013-10-09 01:29:22 +04:00
|
|
|
container.buildHostnameAndHostsFiles(container.NetworkSettings.IPAddress)
|
2013-10-17 00:12:56 +04:00
|
|
|
}
|
2013-04-11 23:58:23 +04:00
|
|
|
|
2013-10-17 00:12:56 +04:00
|
|
|
// Make sure the config is compatible with the current kernel
|
2014-01-16 02:36:13 +04:00
|
|
|
if container.Config.Memory > 0 && !container.runtime.sysInfo.MemoryLimit {
|
2013-10-17 00:12:56 +04:00
|
|
|
log.Printf("WARNING: Your kernel does not support memory limit capabilities. Limitation discarded.\n")
|
|
|
|
container.Config.Memory = 0
|
|
|
|
}
|
2014-01-16 02:36:13 +04:00
|
|
|
if container.Config.Memory > 0 && !container.runtime.sysInfo.SwapLimit {
|
2013-10-17 00:12:56 +04:00
|
|
|
log.Printf("WARNING: Your kernel does not support swap limit capabilities. Limitation discarded.\n")
|
|
|
|
container.Config.MemorySwap = -1
|
|
|
|
}
|
2013-04-11 23:58:23 +04:00
|
|
|
|
2014-01-16 02:36:13 +04:00
|
|
|
if container.runtime.sysInfo.IPv4ForwardingDisabled {
|
2013-10-17 00:12:56 +04:00
|
|
|
log.Printf("WARNING: IPv4 forwarding is disabled. Networking will not work")
|
|
|
|
}
|
2013-08-04 02:06:58 +04:00
|
|
|
|
2014-02-15 05:15:40 +04:00
|
|
|
if err := prepareVolumesForContainer(container); err != nil {
|
2013-12-04 02:47:49 +04:00
|
|
|
return err
|
2013-10-17 00:12:56 +04:00
|
|
|
}
|
2013-04-10 05:19:55 +04:00
|
|
|
|
2013-08-14 02:40:23 +04:00
|
|
|
// Setup environment
|
|
|
|
env := []string{
|
|
|
|
"HOME=/",
|
|
|
|
"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
|
|
|
|
"HOSTNAME=" + container.Config.Hostname,
|
2013-10-17 00:12:56 +04:00
|
|
|
}
|
2013-04-16 11:25:55 +04:00
|
|
|
|
2013-08-14 02:40:23 +04:00
|
|
|
if container.Config.Tty {
|
|
|
|
env = append(env, "TERM=xterm")
|
|
|
|
}
|
2013-10-05 06:25:15 +04:00
|
|
|
|
|
|
|
// Init any links between the parent and children
|
|
|
|
runtime := container.runtime
|
|
|
|
|
2013-10-29 03:58:59 +04:00
|
|
|
children, err := runtime.Children(container.Name)
|
2013-10-05 06:25:15 +04:00
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
|
|
|
|
if len(children) > 0 {
|
2014-02-15 06:18:16 +04:00
|
|
|
container.activeLinks = make(map[string]*links.Link, len(children))
|
2013-10-05 06:25:15 +04:00
|
|
|
|
2014-01-31 00:43:49 +04:00
|
|
|
// If we encounter an error make sure that we rollback any network
|
|
|
|
// config and ip table changes
|
|
|
|
rollback := func() {
|
|
|
|
for _, link := range container.activeLinks {
|
|
|
|
link.Disable()
|
|
|
|
}
|
|
|
|
container.activeLinks = nil
|
|
|
|
}
|
|
|
|
|
2014-02-15 06:07:33 +04:00
|
|
|
for linkAlias, child := range children {
|
|
|
|
if !child.State.IsRunning() {
|
|
|
|
return fmt.Errorf("Cannot link to a non running container: %s AS %s", child.Name, linkAlias)
|
|
|
|
}
|
|
|
|
|
2014-02-15 06:18:16 +04:00
|
|
|
link, err := links.NewLink(
|
2014-02-15 06:07:33 +04:00
|
|
|
container.NetworkSettings.IPAddress,
|
|
|
|
child.NetworkSettings.IPAddress,
|
|
|
|
linkAlias,
|
|
|
|
child.Config.Env,
|
|
|
|
child.Config.ExposedPorts,
|
|
|
|
runtime.eng)
|
|
|
|
|
2014-01-31 00:43:49 +04:00
|
|
|
if err != nil {
|
|
|
|
rollback()
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
|
|
|
|
container.activeLinks[link.Alias()] = link
|
|
|
|
if err := link.Enable(); err != nil {
|
|
|
|
rollback()
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
|
|
|
|
for _, envVar := range link.ToEnv() {
|
|
|
|
env = append(env, envVar)
|
|
|
|
}
|
|
|
|
}
|
2013-10-05 06:25:15 +04:00
|
|
|
}
|
|
|
|
|
2013-08-14 02:40:23 +04:00
|
|
|
for _, elem := range container.Config.Env {
|
|
|
|
env = append(env, elem)
|
|
|
|
}
|
|
|
|
|
|
|
|
if err := container.generateEnvConfig(env); err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
|
2013-10-17 00:12:56 +04:00
|
|
|
if container.Config.WorkingDir != "" {
|
2014-01-21 06:07:18 +04:00
|
|
|
container.Config.WorkingDir = path.Clean(container.Config.WorkingDir)
|
2014-01-30 19:43:53 +04:00
|
|
|
if err := os.MkdirAll(path.Join(container.basefs, container.Config.WorkingDir), 0755); err != nil {
|
2013-10-17 00:12:56 +04:00
|
|
|
return nil
|
2013-10-16 23:01:55 +04:00
|
|
|
}
|
2013-10-17 00:12:56 +04:00
|
|
|
}
|
2013-03-29 19:46:06 +04:00
|
|
|
|
2013-12-19 04:42:49 +04:00
|
|
|
envPath, err := container.EnvConfigPath()
|
2013-12-18 02:04:37 +04:00
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
|
2014-02-15 05:15:40 +04:00
|
|
|
if err := mountVolumesForContainer(container, envPath); err != nil {
|
2014-01-30 19:43:53 +04:00
|
|
|
return err
|
|
|
|
}
|
|
|
|
|
2014-01-21 06:07:18 +04:00
|
|
|
populateCommand(container)
|
2013-10-29 19:16:51 +04:00
|
|
|
|
2013-10-17 00:12:56 +04:00
|
|
|
// Setup logging of stdout and stderr to disk
|
|
|
|
if err := container.runtime.LogToDisk(container.stdout, container.logPath("json"), "stdout"); err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
if err := container.runtime.LogToDisk(container.stderr, container.logPath("json"), "stderr"); err != nil {
|
|
|
|
return err
|
|
|
|
}
|
2014-01-11 03:34:03 +04:00
|
|
|
container.waitLock = make(chan struct{})
|
2014-01-14 03:37:17 +04:00
|
|
|
|
2014-01-15 23:46:25 +04:00
|
|
|
// Setuping pipes and/or Pty
|
|
|
|
var setup func() error
|
2014-01-14 03:37:17 +04:00
|
|
|
if container.Config.Tty {
|
2014-01-15 23:46:25 +04:00
|
|
|
setup = container.setupPty
|
2014-01-14 03:37:17 +04:00
|
|
|
} else {
|
2014-01-15 23:46:25 +04:00
|
|
|
setup = container.setupStd
|
2014-01-14 03:37:17 +04:00
|
|
|
}
|
2014-01-15 23:46:25 +04:00
|
|
|
if err := setup(); err != nil {
|
2014-01-14 03:37:17 +04:00
|
|
|
return err
|
|
|
|
}
|
2014-01-11 02:26:29 +04:00
|
|
|
|
2014-01-15 23:46:25 +04:00
|
|
|
callbackLock := make(chan struct{})
|
2014-01-21 04:05:07 +04:00
|
|
|
callback := func(command *execdriver.Command) {
|
|
|
|
container.State.SetRunning(command.Pid())
|
|
|
|
if command.Tty {
|
2014-01-14 03:37:17 +04:00
|
|
|
// The callback is called after the process Start()
|
|
|
|
// so we are in the parent process. In TTY mode, stdin/out/err is the PtySlace
|
|
|
|
// which we close here.
|
2014-01-21 04:05:07 +04:00
|
|
|
if c, ok := command.Stdout.(io.Closer); ok {
|
2014-01-14 03:02:12 +04:00
|
|
|
c.Close()
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if err := container.ToDisk(); err != nil {
|
|
|
|
utils.Debugf("%s", err)
|
|
|
|
}
|
2014-01-15 23:46:25 +04:00
|
|
|
close(callbackLock)
|
2013-01-19 04:13:39 +04:00
|
|
|
}
|
2013-10-17 00:12:56 +04:00
|
|
|
|
2014-01-14 04:10:23 +04:00
|
|
|
// We use a callback here instead of a goroutine and an chan for
|
|
|
|
// syncronization purposes
|
2014-01-14 04:41:35 +04:00
|
|
|
cErr := utils.Go(func() error { return container.monitor(callback) })
|
2014-01-14 03:02:12 +04:00
|
|
|
|
|
|
|
// Start should not return until the process is actually running
|
2014-01-14 04:41:35 +04:00
|
|
|
select {
|
2014-01-15 23:46:25 +04:00
|
|
|
case <-callbackLock:
|
2014-01-14 04:41:35 +04:00
|
|
|
case err := <-cErr:
|
|
|
|
return err
|
|
|
|
}
|
2014-01-10 04:03:22 +04:00
|
|
|
return nil
|
2013-01-19 04:13:39 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
func (container *Container) Run() error {
|
2013-11-01 01:58:43 +04:00
|
|
|
if err := container.Start(); err != nil {
|
2013-01-19 04:13:39 +04:00
|
|
|
return err
|
|
|
|
}
|
|
|
|
container.Wait()
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
|
|
|
|
func (container *Container) Output() (output []byte, err error) {
|
|
|
|
pipe, err := container.StdoutPipe()
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
defer pipe.Close()
|
2013-11-01 01:58:43 +04:00
|
|
|
if err := container.Start(); err != nil {
|
2013-01-19 04:13:39 +04:00
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
output, err = ioutil.ReadAll(pipe)
|
|
|
|
container.Wait()
|
|
|
|
return output, err
|
|
|
|
}
|
|
|
|
|
2013-10-16 21:41:36 +04:00
|
|
|
// Container.StdinPipe returns a WriteCloser which can be used to feed data
|
|
|
|
// to the standard input of the container's active process.
|
|
|
|
// Container.StdoutPipe and Container.StderrPipe each return a ReadCloser
|
|
|
|
// which can be used to retrieve the standard output (and error) generated
|
|
|
|
// by the container's active process. The output (and error) are actually
|
|
|
|
// copied and delivered to all StdoutPipe and StderrPipe consumers, using
|
|
|
|
// a kind of "broadcaster".
|
|
|
|
|
2013-01-29 05:50:12 +04:00
|
|
|
func (container *Container) StdinPipe() (io.WriteCloser, error) {
|
|
|
|
return container.stdinPipe, nil
|
|
|
|
}
|
|
|
|
|
2013-01-19 04:13:39 +04:00
|
|
|
func (container *Container) StdoutPipe() (io.ReadCloser, error) {
|
|
|
|
reader, writer := io.Pipe()
|
2013-07-11 21:18:28 +04:00
|
|
|
container.stdout.AddWriter(writer, "")
|
2013-05-15 02:37:35 +04:00
|
|
|
return utils.NewBufReader(reader), nil
|
2013-01-19 04:13:39 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
func (container *Container) StderrPipe() (io.ReadCloser, error) {
|
|
|
|
reader, writer := io.Pipe()
|
2013-07-11 21:18:28 +04:00
|
|
|
container.stderr.AddWriter(writer, "")
|
2013-05-15 02:37:35 +04:00
|
|
|
return utils.NewBufReader(reader), nil
|
2013-01-19 04:13:39 +04:00
|
|
|
}
|
|
|
|
|
2013-10-09 01:29:22 +04:00
|
|
|
func (container *Container) buildHostnameAndHostsFiles(IP string) {
|
|
|
|
container.HostnamePath = path.Join(container.root, "hostname")
|
|
|
|
ioutil.WriteFile(container.HostnamePath, []byte(container.Config.Hostname+"\n"), 0644)
|
|
|
|
|
|
|
|
hostsContent := []byte(`
|
|
|
|
127.0.0.1 localhost
|
|
|
|
::1 localhost ip6-localhost ip6-loopback
|
|
|
|
fe00::0 ip6-localnet
|
|
|
|
ff00::0 ip6-mcastprefix
|
|
|
|
ff02::1 ip6-allnodes
|
|
|
|
ff02::2 ip6-allrouters
|
|
|
|
`)
|
|
|
|
|
|
|
|
container.HostsPath = path.Join(container.root, "hosts")
|
|
|
|
|
|
|
|
if container.Config.Domainname != "" {
|
|
|
|
hostsContent = append([]byte(fmt.Sprintf("%s\t%s.%s %s\n", IP, container.Config.Hostname, container.Config.Domainname, container.Config.Hostname)), hostsContent...)
|
2014-01-09 04:57:56 +04:00
|
|
|
} else if !container.Config.NetworkDisabled {
|
2013-10-09 01:29:22 +04:00
|
|
|
hostsContent = append([]byte(fmt.Sprintf("%s\t%s\n", IP, container.Config.Hostname)), hostsContent...)
|
|
|
|
}
|
|
|
|
|
|
|
|
ioutil.WriteFile(container.HostsPath, hostsContent, 0644)
|
|
|
|
}
|
|
|
|
|
2013-11-01 01:58:43 +04:00
|
|
|
func (container *Container) allocateNetwork() error {
|
2013-07-23 06:00:35 +04:00
|
|
|
if container.Config.NetworkDisabled {
|
2013-07-22 04:11:47 +04:00
|
|
|
return nil
|
|
|
|
}
|
|
|
|
|
2013-11-22 00:21:03 +04:00
|
|
|
var (
|
2014-01-30 06:34:43 +04:00
|
|
|
env *engine.Env
|
2014-01-31 00:02:56 +04:00
|
|
|
err error
|
2014-01-30 23:50:59 +04:00
|
|
|
eng = container.runtime.eng
|
2013-11-22 00:21:03 +04:00
|
|
|
)
|
2014-01-31 00:02:56 +04:00
|
|
|
|
2013-11-22 00:21:03 +04:00
|
|
|
if container.State.IsGhost() {
|
2014-01-30 06:34:43 +04:00
|
|
|
if container.runtime.config.DisableNetwork {
|
|
|
|
env = &engine.Env{}
|
2013-08-21 18:37:58 +04:00
|
|
|
} else {
|
2014-01-31 00:02:56 +04:00
|
|
|
currentIP := container.NetworkSettings.IPAddress
|
2014-01-30 06:34:43 +04:00
|
|
|
|
2014-01-31 00:02:56 +04:00
|
|
|
job := eng.Job("allocate_interface", container.ID)
|
|
|
|
if currentIP != "" {
|
|
|
|
job.Setenv("RequestIP", currentIP)
|
|
|
|
}
|
|
|
|
|
|
|
|
env, err = job.Stdout.AddEnv()
|
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
|
|
|
|
if err := job.Run(); err != nil {
|
|
|
|
return err
|
|
|
|
}
|
2013-10-27 17:04:57 +04:00
|
|
|
}
|
|
|
|
} else {
|
2014-01-30 06:34:43 +04:00
|
|
|
job := eng.Job("allocate_interface", container.ID)
|
|
|
|
env, err = job.Stdout.AddEnv()
|
2013-10-27 17:04:57 +04:00
|
|
|
if err != nil {
|
|
|
|
return err
|
2013-08-21 18:37:58 +04:00
|
|
|
}
|
2014-01-30 06:34:43 +04:00
|
|
|
if err := job.Run(); err != nil {
|
|
|
|
return err
|
|
|
|
}
|
2013-02-26 02:06:22 +04:00
|
|
|
}
|
2013-08-21 18:37:58 +04:00
|
|
|
|
2013-10-05 06:25:15 +04:00
|
|
|
if container.Config.PortSpecs != nil {
|
|
|
|
utils.Debugf("Migrating port mappings for container: %s", strings.Join(container.Config.PortSpecs, ", "))
|
2013-11-01 01:58:43 +04:00
|
|
|
if err := migratePortMappings(container.Config, container.hostConfig); err != nil {
|
2013-10-05 06:25:15 +04:00
|
|
|
return err
|
|
|
|
}
|
|
|
|
container.Config.PortSpecs = nil
|
2013-11-01 01:58:43 +04:00
|
|
|
if err := container.writeHostConfig(); err != nil {
|
2013-10-30 19:15:12 +04:00
|
|
|
return err
|
|
|
|
}
|
2013-10-05 06:25:15 +04:00
|
|
|
}
|
|
|
|
|
2013-11-22 00:21:03 +04:00
|
|
|
var (
|
2014-02-12 04:48:44 +04:00
|
|
|
portSpecs = make(nat.PortSet)
|
|
|
|
bindings = make(nat.PortMap)
|
2013-11-22 00:21:03 +04:00
|
|
|
)
|
2013-10-05 06:25:15 +04:00
|
|
|
|
2013-11-22 00:21:03 +04:00
|
|
|
if !container.State.IsGhost() {
|
2013-10-05 06:25:15 +04:00
|
|
|
if container.Config.ExposedPorts != nil {
|
|
|
|
portSpecs = container.Config.ExposedPorts
|
2013-08-27 23:14:21 +04:00
|
|
|
}
|
2013-11-01 01:58:43 +04:00
|
|
|
if container.hostConfig.PortBindings != nil {
|
|
|
|
bindings = container.hostConfig.PortBindings
|
2013-10-05 06:25:15 +04:00
|
|
|
}
|
|
|
|
} else {
|
|
|
|
if container.NetworkSettings.Ports != nil {
|
|
|
|
for port, binding := range container.NetworkSettings.Ports {
|
|
|
|
portSpecs[port] = struct{}{}
|
|
|
|
bindings[port] = binding
|
|
|
|
}
|
2013-08-27 23:14:21 +04:00
|
|
|
}
|
2013-02-26 02:06:22 +04:00
|
|
|
}
|
2013-08-27 23:14:21 +04:00
|
|
|
|
2013-10-05 06:25:15 +04:00
|
|
|
container.NetworkSettings.PortMapping = nil
|
|
|
|
|
|
|
|
for port := range portSpecs {
|
|
|
|
binding := bindings[port]
|
2013-11-02 01:01:32 +04:00
|
|
|
if container.hostConfig.PublishAllPorts && len(binding) == 0 {
|
2014-02-12 04:48:44 +04:00
|
|
|
binding = append(binding, nat.PortBinding{})
|
2013-10-31 22:10:25 +04:00
|
|
|
}
|
2014-01-30 06:34:43 +04:00
|
|
|
|
2013-10-05 06:25:15 +04:00
|
|
|
for i := 0; i < len(binding); i++ {
|
|
|
|
b := binding[i]
|
2014-01-30 06:34:43 +04:00
|
|
|
|
|
|
|
portJob := eng.Job("allocate_port", container.ID)
|
|
|
|
portJob.Setenv("HostIP", b.HostIp)
|
|
|
|
portJob.Setenv("HostPort", b.HostPort)
|
|
|
|
portJob.Setenv("Proto", port.Proto())
|
|
|
|
portJob.Setenv("ContainerPort", port.Port())
|
|
|
|
|
2014-01-31 02:52:59 +04:00
|
|
|
portEnv, err := portJob.Stdout.AddEnv()
|
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
2014-01-30 06:34:43 +04:00
|
|
|
if err := portJob.Run(); err != nil {
|
|
|
|
eng.Job("release_interface", container.ID).Run()
|
2013-10-05 06:25:15 +04:00
|
|
|
return err
|
|
|
|
}
|
2014-01-31 02:52:59 +04:00
|
|
|
b.HostIp = portEnv.Get("HostIP")
|
|
|
|
b.HostPort = portEnv.Get("HostPort")
|
|
|
|
|
|
|
|
binding[i] = b
|
2013-02-28 23:51:14 +04:00
|
|
|
}
|
2013-10-05 06:25:15 +04:00
|
|
|
bindings[port] = binding
|
2013-02-28 23:51:14 +04:00
|
|
|
}
|
2013-11-01 01:58:43 +04:00
|
|
|
container.writeHostConfig()
|
2013-10-05 06:25:15 +04:00
|
|
|
|
|
|
|
container.NetworkSettings.Ports = bindings
|
|
|
|
|
2014-01-30 06:34:43 +04:00
|
|
|
container.NetworkSettings.Bridge = env.Get("Bridge")
|
|
|
|
container.NetworkSettings.IPAddress = env.Get("IP")
|
|
|
|
container.NetworkSettings.IPPrefixLen = env.GetInt("IPPrefixLen")
|
|
|
|
container.NetworkSettings.Gateway = env.Get("Gateway")
|
2013-10-05 06:25:15 +04:00
|
|
|
|
2013-02-26 02:06:22 +04:00
|
|
|
return nil
|
|
|
|
}
|
|
|
|
|
2013-04-01 09:04:59 +04:00
|
|
|
func (container *Container) releaseNetwork() {
|
2014-01-30 06:34:43 +04:00
|
|
|
if container.Config.NetworkDisabled {
|
2013-07-22 04:11:47 +04:00
|
|
|
return
|
|
|
|
}
|
2014-01-30 23:50:59 +04:00
|
|
|
eng := container.runtime.eng
|
2014-01-30 06:34:43 +04:00
|
|
|
|
|
|
|
eng.Job("release_interface", container.ID).Run()
|
2013-02-28 23:51:14 +04:00
|
|
|
container.NetworkSettings = &NetworkSettings{}
|
2013-01-27 03:56:42 +04:00
|
|
|
}
|
|
|
|
|
2014-01-14 04:41:35 +04:00
|
|
|
func (container *Container) monitor(callback execdriver.StartCallback) error {
|
2014-01-14 03:02:12 +04:00
|
|
|
var (
|
|
|
|
err error
|
|
|
|
exitCode int
|
|
|
|
)
|
|
|
|
|
2014-01-21 04:05:07 +04:00
|
|
|
if container.command == nil {
|
2014-01-14 03:02:12 +04:00
|
|
|
// This happends when you have a GHOST container with lxc
|
2014-01-21 06:43:54 +04:00
|
|
|
populateCommand(container)
|
|
|
|
err = container.runtime.RestoreCommand(container)
|
2014-01-11 03:06:16 +04:00
|
|
|
} else {
|
2014-01-14 03:37:17 +04:00
|
|
|
exitCode, err = container.runtime.Run(container, callback)
|
2014-01-11 03:06:16 +04:00
|
|
|
}
|
|
|
|
|
2014-01-14 04:41:35 +04:00
|
|
|
if err != nil {
|
2014-01-22 04:18:57 +04:00
|
|
|
utils.Errorf("Error running container: %s", err)
|
2013-09-21 00:36:19 +04:00
|
|
|
}
|
|
|
|
|
2013-01-23 03:03:40 +04:00
|
|
|
// Cleanup
|
2013-10-16 23:01:55 +04:00
|
|
|
container.cleanup()
|
|
|
|
|
|
|
|
// Re-create a brand new stdin pipe once the container exited
|
|
|
|
if container.Config.OpenStdin {
|
|
|
|
container.stdin, container.stdinPipe = io.Pipe()
|
|
|
|
}
|
|
|
|
|
2014-01-10 06:48:34 +04:00
|
|
|
container.State.SetStopped(exitCode)
|
|
|
|
|
2014-01-22 04:18:57 +04:00
|
|
|
if container.runtime != nil && container.runtime.srv != nil {
|
|
|
|
container.runtime.srv.LogEvent("die", container.ID, container.runtime.repositories.ImageName(container.Image))
|
|
|
|
}
|
|
|
|
|
2014-01-11 05:25:32 +04:00
|
|
|
close(container.waitLock)
|
|
|
|
|
2014-01-14 04:41:35 +04:00
|
|
|
// FIXME: there is a race condition here which causes this to fail during the unit tests.
|
|
|
|
// If another goroutine was waiting for Wait() to return before removing the container's root
|
|
|
|
// from the filesystem... At this point it may already have done so.
|
|
|
|
// This is because State.setStopped() has already been called, and has caused Wait()
|
|
|
|
// to return.
|
|
|
|
// FIXME: why are we serializing running state to disk in the first place?
|
|
|
|
//log.Printf("%s: Failed to dump configuration to the disk: %s", container.ID, err)
|
|
|
|
container.ToDisk()
|
|
|
|
|
|
|
|
return err
|
2013-10-16 23:01:55 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
func (container *Container) cleanup() {
|
2013-03-31 02:32:10 +04:00
|
|
|
container.releaseNetwork()
|
2013-10-05 06:25:15 +04:00
|
|
|
|
|
|
|
// Disable all active links
|
|
|
|
if container.activeLinks != nil {
|
|
|
|
for _, link := range container.activeLinks {
|
|
|
|
link.Disable()
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-03-30 20:08:53 +04:00
|
|
|
if container.Config.OpenStdin {
|
|
|
|
if err := container.stdin.Close(); err != nil {
|
2013-10-08 11:54:47 +04:00
|
|
|
utils.Errorf("%s: Error close stdin: %s", container.ID, err)
|
2013-03-30 20:08:53 +04:00
|
|
|
}
|
|
|
|
}
|
2013-04-02 12:45:17 +04:00
|
|
|
if err := container.stdout.CloseWriters(); err != nil {
|
2013-10-08 11:54:47 +04:00
|
|
|
utils.Errorf("%s: Error close stdout: %s", container.ID, err)
|
2013-03-29 19:29:59 +04:00
|
|
|
}
|
2013-04-02 12:45:17 +04:00
|
|
|
if err := container.stderr.CloseWriters(); err != nil {
|
2013-10-08 11:54:47 +04:00
|
|
|
utils.Errorf("%s: Error close stderr: %s", container.ID, err)
|
2013-03-29 19:29:59 +04:00
|
|
|
}
|
2013-03-30 20:05:53 +04:00
|
|
|
|
2013-04-04 23:12:22 +04:00
|
|
|
if container.ptyMaster != nil {
|
|
|
|
if err := container.ptyMaster.Close(); err != nil {
|
2013-10-08 11:54:47 +04:00
|
|
|
utils.Errorf("%s: Error closing Pty master: %s", container.ID, err)
|
2013-03-30 20:05:53 +04:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2014-02-15 05:15:40 +04:00
|
|
|
unmountVolumesForContainer(container)
|
2014-01-30 19:43:53 +04:00
|
|
|
|
2013-03-21 11:25:00 +04:00
|
|
|
if err := container.Unmount(); err != nil {
|
2013-06-04 22:00:22 +04:00
|
|
|
log.Printf("%v: Failed to umount filesystem: %v", container.ID, err)
|
2013-01-22 06:03:23 +04:00
|
|
|
}
|
2013-01-19 04:13:39 +04:00
|
|
|
}
|
|
|
|
|
2013-09-12 10:50:26 +04:00
|
|
|
func (container *Container) kill(sig int) error {
|
2013-11-22 00:21:03 +04:00
|
|
|
container.Lock()
|
|
|
|
defer container.Unlock()
|
2013-10-08 23:15:29 +04:00
|
|
|
|
2013-11-22 00:21:03 +04:00
|
|
|
if !container.State.IsRunning() {
|
2013-03-24 06:51:35 +04:00
|
|
|
return nil
|
|
|
|
}
|
2014-01-11 02:26:29 +04:00
|
|
|
return container.runtime.Kill(container, sig)
|
2013-10-08 23:15:29 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
func (container *Container) Kill() error {
|
2013-11-22 00:21:03 +04:00
|
|
|
if !container.State.IsRunning() {
|
2013-10-08 23:15:29 +04:00
|
|
|
return nil
|
|
|
|
}
|
|
|
|
|
|
|
|
// 1. Send SIGKILL
|
|
|
|
if err := container.kill(9); err != nil {
|
|
|
|
return err
|
2013-01-19 04:13:39 +04:00
|
|
|
}
|
2013-04-11 20:02:34 +04:00
|
|
|
|
|
|
|
// 2. Wait for the process to die, in last resort, try to kill the process directly
|
|
|
|
if err := container.WaitTimeout(10 * time.Second); err != nil {
|
2014-01-21 04:05:07 +04:00
|
|
|
if container.command == nil {
|
2013-10-25 05:59:59 +04:00
|
|
|
return fmt.Errorf("lxc-kill failed, impossible to kill the container %s", utils.TruncateID(container.ID))
|
2013-04-19 23:12:30 +04:00
|
|
|
}
|
2013-10-25 05:59:59 +04:00
|
|
|
log.Printf("Container %s failed to exit within 10 seconds of lxc-kill %s - trying direct SIGKILL", "SIGKILL", utils.TruncateID(container.ID))
|
2014-01-11 02:26:29 +04:00
|
|
|
if err := container.runtime.Kill(container, 9); err != nil {
|
2013-04-11 20:02:34 +04:00
|
|
|
return err
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-01-23 05:30:09 +04:00
|
|
|
container.Wait()
|
2013-01-22 06:03:23 +04:00
|
|
|
return nil
|
|
|
|
}
|
|
|
|
|
2013-04-16 20:43:44 +04:00
|
|
|
func (container *Container) Stop(seconds int) error {
|
2013-11-22 00:21:03 +04:00
|
|
|
if !container.State.IsRunning() {
|
2013-01-19 04:13:39 +04:00
|
|
|
return nil
|
|
|
|
}
|
2013-01-22 06:03:23 +04:00
|
|
|
|
|
|
|
// 1. Send a SIGTERM
|
2013-10-08 23:15:29 +04:00
|
|
|
if err := container.kill(15); err != nil {
|
|
|
|
utils.Debugf("Error sending kill SIGTERM: %s", err)
|
2013-03-30 11:23:12 +04:00
|
|
|
log.Print("Failed to send SIGTERM to the process, force killing")
|
2013-09-12 10:50:26 +04:00
|
|
|
if err := container.kill(9); err != nil {
|
2013-01-26 03:36:47 +04:00
|
|
|
return err
|
|
|
|
}
|
2013-01-22 06:03:23 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
// 2. Wait for the process to exit on its own
|
2013-04-16 20:43:44 +04:00
|
|
|
if err := container.WaitTimeout(time.Duration(seconds) * time.Second); err != nil {
|
2013-06-04 22:00:22 +04:00
|
|
|
log.Printf("Container %v failed to exit within %d seconds of SIGTERM - using the force", container.ID, seconds)
|
2013-10-08 23:15:29 +04:00
|
|
|
// 3. If it doesn't, then send SIGKILL
|
|
|
|
if err := container.Kill(); err != nil {
|
2013-01-26 03:36:47 +04:00
|
|
|
return err
|
|
|
|
}
|
2013-01-22 06:03:23 +04:00
|
|
|
}
|
2013-01-19 04:13:39 +04:00
|
|
|
return nil
|
|
|
|
}
|
|
|
|
|
2013-04-16 20:43:44 +04:00
|
|
|
func (container *Container) Restart(seconds int) error {
|
2014-02-17 19:10:54 +04:00
|
|
|
// Avoid unnecessarily unmounting and then directly mounting
|
|
|
|
// the container when the container stops and then starts
|
|
|
|
// again
|
|
|
|
if err := container.Mount(); err == nil {
|
|
|
|
defer container.Unmount()
|
|
|
|
}
|
|
|
|
|
2013-04-16 20:43:44 +04:00
|
|
|
if err := container.Stop(seconds); err != nil {
|
2013-01-23 03:03:40 +04:00
|
|
|
return err
|
|
|
|
}
|
2013-11-01 01:58:43 +04:00
|
|
|
return container.Start()
|
2013-01-23 03:03:40 +04:00
|
|
|
}
|
|
|
|
|
2013-02-26 23:43:54 +04:00
|
|
|
// Wait blocks until the container stops running, then returns its exit code.
|
|
|
|
func (container *Container) Wait() int {
|
2014-01-11 03:34:03 +04:00
|
|
|
<-container.waitLock
|
|
|
|
return container.State.GetExitCode()
|
2013-01-19 04:13:39 +04:00
|
|
|
}
|
2013-01-22 06:03:23 +04:00
|
|
|
|
2013-05-24 06:33:28 +04:00
|
|
|
func (container *Container) Resize(h, w int) error {
|
2013-05-25 01:44:16 +04:00
|
|
|
pty, ok := container.ptyMaster.(*os.File)
|
|
|
|
if !ok {
|
|
|
|
return fmt.Errorf("ptyMaster does not have Fd() method")
|
|
|
|
}
|
|
|
|
return term.SetWinsize(pty.Fd(), &term.Winsize{Height: uint16(h), Width: uint16(w)})
|
2013-05-24 06:33:28 +04:00
|
|
|
}
|
|
|
|
|
2013-11-01 03:57:45 +04:00
|
|
|
func (container *Container) ExportRw() (archive.Archive, error) {
|
2013-12-06 15:15:14 +04:00
|
|
|
if err := container.Mount(); err != nil {
|
2013-11-08 06:48:52 +04:00
|
|
|
return nil, err
|
|
|
|
}
|
2013-11-08 00:34:01 +04:00
|
|
|
if container.runtime == nil {
|
|
|
|
return nil, fmt.Errorf("Can't load storage driver for unregistered container %s", container.ID)
|
2013-04-19 19:25:55 +04:00
|
|
|
}
|
2014-02-04 03:56:58 +04:00
|
|
|
archive, err := container.runtime.Diff(container)
|
|
|
|
if err != nil {
|
|
|
|
container.Unmount()
|
|
|
|
return nil, err
|
|
|
|
}
|
2014-02-14 15:41:46 +04:00
|
|
|
return utils.NewReadCloserWrapper(archive, func() error {
|
|
|
|
err := archive.Close()
|
|
|
|
container.Unmount()
|
|
|
|
return err
|
|
|
|
}), nil
|
2013-04-19 19:25:55 +04:00
|
|
|
}
|
|
|
|
|
2013-11-01 03:57:45 +04:00
|
|
|
func (container *Container) Export() (archive.Archive, error) {
|
2013-12-06 15:15:14 +04:00
|
|
|
if err := container.Mount(); err != nil {
|
2013-03-21 11:25:00 +04:00
|
|
|
return nil, err
|
|
|
|
}
|
2013-12-06 01:18:02 +04:00
|
|
|
|
2014-01-30 19:43:53 +04:00
|
|
|
archive, err := archive.Tar(container.basefs, archive.Uncompressed)
|
2013-12-06 01:18:02 +04:00
|
|
|
if err != nil {
|
2014-02-04 03:56:58 +04:00
|
|
|
container.Unmount()
|
2013-12-06 01:18:02 +04:00
|
|
|
return nil, err
|
|
|
|
}
|
2014-02-14 15:41:46 +04:00
|
|
|
return utils.NewReadCloserWrapper(archive, func() error {
|
|
|
|
err := archive.Close()
|
|
|
|
container.Unmount()
|
|
|
|
return err
|
|
|
|
}), nil
|
2013-03-21 11:25:00 +04:00
|
|
|
}
|
|
|
|
|
2013-01-22 06:03:23 +04:00
|
|
|
func (container *Container) WaitTimeout(timeout time.Duration) error {
|
|
|
|
done := make(chan bool)
|
|
|
|
go func() {
|
|
|
|
container.Wait()
|
|
|
|
done <- true
|
|
|
|
}()
|
|
|
|
|
|
|
|
select {
|
|
|
|
case <-time.After(timeout):
|
2013-03-29 19:19:42 +04:00
|
|
|
return fmt.Errorf("Timed Out")
|
2013-01-22 06:03:23 +04:00
|
|
|
case <-done:
|
|
|
|
return nil
|
|
|
|
}
|
|
|
|
}
|
2013-03-21 11:25:00 +04:00
|
|
|
|
|
|
|
func (container *Container) Mount() error {
|
2013-11-01 05:07:54 +04:00
|
|
|
return container.runtime.Mount(container)
|
2013-03-21 11:25:00 +04:00
|
|
|
}
|
|
|
|
|
2013-11-08 04:35:26 +04:00
|
|
|
func (container *Container) Changes() ([]archive.Change, error) {
|
2013-11-01 05:07:54 +04:00
|
|
|
return container.runtime.Changes(container)
|
2013-03-21 11:25:00 +04:00
|
|
|
}
|
|
|
|
|
2013-03-22 04:47:23 +04:00
|
|
|
func (container *Container) GetImage() (*Image, error) {
|
2013-03-21 11:25:00 +04:00
|
|
|
if container.runtime == nil {
|
|
|
|
return nil, fmt.Errorf("Can't get image of unregistered container")
|
|
|
|
}
|
|
|
|
return container.runtime.graph.Get(container.Image)
|
|
|
|
}
|
|
|
|
|
|
|
|
func (container *Container) Unmount() error {
|
2013-11-01 05:07:54 +04:00
|
|
|
return container.runtime.Unmount(container)
|
2013-03-21 11:25:00 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
func (container *Container) logPath(name string) string {
|
2013-06-04 22:00:22 +04:00
|
|
|
return path.Join(container.root, fmt.Sprintf("%s-%s.log", container.ID, name))
|
2013-03-21 11:25:00 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
func (container *Container) ReadLog(name string) (io.Reader, error) {
|
|
|
|
return os.Open(container.logPath(name))
|
|
|
|
}
|
|
|
|
|
2013-07-02 16:19:25 +04:00
|
|
|
func (container *Container) hostConfigPath() string {
|
2013-07-02 21:02:42 +04:00
|
|
|
return path.Join(container.root, "hostconfig.json")
|
2013-07-02 16:19:25 +04:00
|
|
|
}
|
|
|
|
|
2013-03-21 11:25:00 +04:00
|
|
|
func (container *Container) jsonPath() string {
|
|
|
|
return path.Join(container.root, "config.json")
|
|
|
|
}
|
|
|
|
|
2013-12-18 02:04:37 +04:00
|
|
|
func (container *Container) EnvConfigPath() (string, error) {
|
|
|
|
p := path.Join(container.root, "config.env")
|
|
|
|
if _, err := os.Stat(p); err != nil {
|
|
|
|
if os.IsNotExist(err) {
|
|
|
|
f, err := os.Create(p)
|
|
|
|
if err != nil {
|
|
|
|
return "", err
|
|
|
|
}
|
|
|
|
f.Close()
|
|
|
|
} else {
|
|
|
|
return "", err
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return p, nil
|
2013-08-14 02:40:23 +04:00
|
|
|
}
|
|
|
|
|
2013-03-21 11:25:00 +04:00
|
|
|
// This method must be exported to be used from the lxc template
|
2014-01-30 19:43:53 +04:00
|
|
|
// This directory is only usable when the container is running
|
2013-03-21 11:25:00 +04:00
|
|
|
func (container *Container) RootfsPath() string {
|
2014-01-30 19:43:53 +04:00
|
|
|
return path.Join(container.root, "root")
|
|
|
|
}
|
|
|
|
|
|
|
|
// This is the stand-alone version of the root fs, without any additional mounts.
|
|
|
|
// This directory is usable whenever the container is mounted (and not unmounted)
|
|
|
|
func (container *Container) BasefsPath() string {
|
|
|
|
return container.basefs
|
2013-03-21 11:25:00 +04:00
|
|
|
}
|
|
|
|
|
2013-06-04 22:00:22 +04:00
|
|
|
func validateID(id string) error {
|
2013-03-21 11:25:00 +04:00
|
|
|
if id == "" {
|
|
|
|
return fmt.Errorf("Invalid empty id")
|
|
|
|
}
|
|
|
|
return nil
|
|
|
|
}
|
2013-05-13 17:10:26 +04:00
|
|
|
|
|
|
|
// GetSize, return real size, virtual size
|
|
|
|
func (container *Container) GetSize() (int64, int64) {
|
2013-11-12 00:09:26 +04:00
|
|
|
var (
|
|
|
|
sizeRw, sizeRootfs int64
|
|
|
|
err error
|
|
|
|
driver = container.runtime.driver
|
|
|
|
)
|
2013-05-13 17:10:26 +04:00
|
|
|
|
2013-12-06 15:15:14 +04:00
|
|
|
if err := container.Mount(); err != nil {
|
2013-11-08 00:30:56 +04:00
|
|
|
utils.Errorf("Warning: failed to compute size of container rootfs %s: %s", container.ID, err)
|
|
|
|
return sizeRw, sizeRootfs
|
|
|
|
}
|
2013-12-06 01:18:02 +04:00
|
|
|
defer container.Unmount()
|
2013-11-19 13:36:54 +04:00
|
|
|
|
|
|
|
if differ, ok := container.runtime.driver.(graphdriver.Differ); ok {
|
|
|
|
sizeRw, err = differ.DiffSize(container.ID)
|
|
|
|
if err != nil {
|
|
|
|
utils.Errorf("Warning: driver %s couldn't return diff size of container %s: %s", driver, container.ID, err)
|
|
|
|
// FIXME: GetSize should return an error. Not changing it now in case
|
|
|
|
// there is a side-effect.
|
|
|
|
sizeRw = -1
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
changes, _ := container.Changes()
|
|
|
|
if changes != nil {
|
2014-01-30 19:43:53 +04:00
|
|
|
sizeRw = archive.ChangesSize(container.basefs, changes)
|
2013-11-19 13:36:54 +04:00
|
|
|
} else {
|
|
|
|
sizeRw = -1
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2014-01-30 19:43:53 +04:00
|
|
|
if _, err = os.Stat(container.basefs); err != nil {
|
|
|
|
if sizeRootfs, err = utils.TreeSize(container.basefs); err != nil {
|
2013-11-22 05:18:41 +04:00
|
|
|
sizeRootfs = -1
|
2013-05-13 17:10:26 +04:00
|
|
|
}
|
|
|
|
}
|
|
|
|
return sizeRw, sizeRootfs
|
|
|
|
}
|
2013-07-17 08:07:41 +04:00
|
|
|
|
2014-02-11 18:21:33 +04:00
|
|
|
func (container *Container) Copy(resource string) (io.ReadCloser, error) {
|
2013-12-06 15:15:14 +04:00
|
|
|
if err := container.Mount(); err != nil {
|
2013-07-17 08:07:41 +04:00
|
|
|
return nil, err
|
|
|
|
}
|
2013-07-17 18:25:49 +04:00
|
|
|
var filter []string
|
2014-01-30 19:43:53 +04:00
|
|
|
basePath := path.Join(container.basefs, resource)
|
2013-07-17 18:25:49 +04:00
|
|
|
stat, err := os.Stat(basePath)
|
|
|
|
if err != nil {
|
2013-12-06 01:18:02 +04:00
|
|
|
container.Unmount()
|
2013-07-17 18:25:49 +04:00
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
if !stat.IsDir() {
|
|
|
|
d, f := path.Split(basePath)
|
|
|
|
basePath = d
|
|
|
|
filter = []string{f}
|
|
|
|
} else {
|
|
|
|
filter = []string{path.Base(basePath)}
|
|
|
|
basePath = path.Dir(basePath)
|
|
|
|
}
|
2013-12-06 01:18:02 +04:00
|
|
|
|
|
|
|
archive, err := archive.TarFilter(basePath, &archive.TarOptions{
|
2013-11-12 02:30:38 +04:00
|
|
|
Compression: archive.Uncompressed,
|
|
|
|
Includes: filter,
|
|
|
|
})
|
2013-12-06 01:18:02 +04:00
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
2014-02-14 15:41:46 +04:00
|
|
|
return utils.NewReadCloserWrapper(archive, func() error {
|
|
|
|
err := archive.Close()
|
|
|
|
container.Unmount()
|
|
|
|
return err
|
|
|
|
}), nil
|
2013-07-17 08:07:41 +04:00
|
|
|
}
|
2013-10-05 06:25:15 +04:00
|
|
|
|
|
|
|
// Returns true if the container exposes a certain port
|
2014-02-12 04:48:44 +04:00
|
|
|
func (container *Container) Exposes(p nat.Port) bool {
|
2013-10-05 06:25:15 +04:00
|
|
|
_, exists := container.Config.ExposedPorts[p]
|
|
|
|
return exists
|
|
|
|
}
|
2013-11-29 19:40:44 +04:00
|
|
|
|
|
|
|
func (container *Container) GetPtyMaster() (*os.File, error) {
|
|
|
|
if container.ptyMaster == nil {
|
|
|
|
return nil, ErrNoTTY
|
|
|
|
}
|
|
|
|
if pty, ok := container.ptyMaster.(*os.File); ok {
|
|
|
|
return pty, nil
|
|
|
|
}
|
|
|
|
return nil, ErrNotATTY
|
|
|
|
}
|