github.com/rumpl/bof@v23.0.0-rc.2+incompatible/daemon/restart.go (about) 1 package daemon // import "github.com/docker/docker/daemon" 2 3 import ( 4 "context" 5 "fmt" 6 7 containertypes "github.com/docker/docker/api/types/container" 8 "github.com/docker/docker/container" 9 ) 10 11 // ContainerRestart stops and starts a container. It attempts to 12 // gracefully stop the container within the given timeout, forcefully 13 // stopping it if the timeout is exceeded. If given a negative 14 // timeout, ContainerRestart will wait forever until a graceful 15 // stop. Returns an error if the container cannot be found, or if 16 // there is an underlying error at any stage of the restart. 17 func (daemon *Daemon) ContainerRestart(ctx context.Context, name string, options containertypes.StopOptions) error { 18 ctr, err := daemon.GetContainer(name) 19 if err != nil { 20 return err 21 } 22 err = daemon.containerRestart(ctx, ctr, options) 23 if err != nil { 24 return fmt.Errorf("Cannot restart container %s: %v", name, err) 25 } 26 return nil 27 } 28 29 // containerRestart attempts to gracefully stop and then start the 30 // container. When stopping, wait for the given duration in seconds to 31 // gracefully stop, before forcefully terminating the container. If 32 // given a negative duration, wait forever for a graceful stop. 33 func (daemon *Daemon) containerRestart(ctx context.Context, container *container.Container, options containertypes.StopOptions) error { 34 // Determine isolation. If not specified in the hostconfig, use daemon default. 35 actualIsolation := container.HostConfig.Isolation 36 if containertypes.Isolation.IsDefault(actualIsolation) { 37 actualIsolation = daemon.defaultIsolation 38 } 39 40 // Avoid unnecessarily unmounting and then directly mounting 41 // the container when the container stops and then starts 42 // again. We do not do this for Hyper-V isolated containers 43 // (implying also on Windows) as the HCS must have exclusive 44 // access to mount the containers filesystem inside the utility 45 // VM. 46 if !containertypes.Isolation.IsHyperV(actualIsolation) { 47 if err := daemon.Mount(container); err == nil { 48 defer daemon.Unmount(container) 49 } 50 } 51 52 if container.IsRunning() { 53 container.Lock() 54 container.HasBeenManuallyRestarted = true 55 container.Unlock() 56 57 err := daemon.containerStop(ctx, container, options) 58 59 if err != nil { 60 return err 61 } 62 } 63 64 if err := daemon.containerStart(container, "", "", true); err != nil { 65 return err 66 } 67 68 daemon.LogContainerEvent(container, "restart") 69 return nil 70 }