113 lines
3.2 KiB
Go
113 lines
3.2 KiB
Go
package containerd
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"github.com/containerd/containerd"
|
|
"github.com/containerd/containerd/cio"
|
|
"github.com/containerd/containerd/oci"
|
|
specs "github.com/opencontainers/runtime-spec/specs-go"
|
|
)
|
|
|
|
func (d *Driver) isContainerdRunning() (bool, error) {
|
|
return d.client.IsServing(d.ctxContainerd)
|
|
}
|
|
|
|
func (d *Driver) getContainerdVersion() (containerd.Version, error) {
|
|
return d.client.Version(d.ctxContainerd)
|
|
}
|
|
|
|
func (d *Driver) pullImage(imageName string) (containerd.Image, error) {
|
|
return d.client.Pull(d.ctxContainerd, imageName, containerd.WithPullUnpack)
|
|
}
|
|
|
|
func (d *Driver) createContainer(image containerd.Image, containerName, containerSnapshotName, containerdRuntime string, env []string, config *TaskConfig) (containerd.Container, error) {
|
|
if config.Command == "" && len(config.Args) > 0 {
|
|
return nil, fmt.Errorf("Command is empty. Cannot set --args without --command.")
|
|
}
|
|
|
|
// Command set by the user, to override entrypoint or cmd defined in the image.
|
|
var args []string
|
|
if config.Command != "" {
|
|
args = append(args, config.Command)
|
|
}
|
|
|
|
// Arguments to the command set by the user.
|
|
if len(config.Args) > 0 {
|
|
args = append(args, config.Args...)
|
|
}
|
|
|
|
var opts []oci.SpecOpts
|
|
|
|
opts = append(opts, oci.WithImageConfigArgs(image, args))
|
|
|
|
// Enable privileged mode.
|
|
if config.Privileged {
|
|
opts = append(opts, oci.WithPrivileged)
|
|
}
|
|
|
|
// Launch container in read-only mode.
|
|
if config.ReadOnlyRootfs {
|
|
opts = append(opts, oci.WithRootFSReadonly())
|
|
}
|
|
|
|
// Add capabilities.
|
|
if len(config.CapAdd) > 0 {
|
|
opts = append(opts, oci.WithAddedCapabilities(config.CapAdd))
|
|
}
|
|
|
|
// Drop capabilities.
|
|
if len(config.CapDrop) > 0 {
|
|
opts = append(opts, oci.WithDroppedCapabilities(config.CapDrop))
|
|
}
|
|
|
|
// Set environment variables.
|
|
opts = append(opts, oci.WithEnv(env))
|
|
|
|
// Add linux devices into the container.
|
|
for _, device := range config.Devices {
|
|
opts = append(opts, oci.WithLinuxDevice(device, "rwm"))
|
|
}
|
|
|
|
// Set mounts. fstab style mount options are supported.
|
|
// List of all supported mount options.
|
|
// https://github.com/containerd/containerd/blob/master/mount/mount_linux.go#L187-L211
|
|
mounts := make([]specs.Mount, 0)
|
|
for _, mount := range config.Mounts {
|
|
if (mount.Type == "bind" || mount.Type == "volume") && len(mount.Options) <= 0 {
|
|
return nil, fmt.Errorf("Options cannot be empty for mount type: %s. You need to atleast pass rbind and ro.", mount.Type)
|
|
}
|
|
|
|
m := specs.Mount{}
|
|
m.Type = mount.Type
|
|
m.Destination = mount.Target
|
|
m.Source = mount.Source
|
|
m.Options = mount.Options
|
|
mounts = append(mounts, m)
|
|
}
|
|
|
|
if len(mounts) > 0 {
|
|
opts = append(opts, oci.WithMounts(mounts))
|
|
}
|
|
|
|
return d.client.NewContainer(
|
|
d.ctxContainerd,
|
|
containerName,
|
|
containerd.WithRuntime(containerdRuntime, nil),
|
|
containerd.WithNewSnapshot(containerSnapshotName, image),
|
|
containerd.WithNewSpec(opts...),
|
|
)
|
|
}
|
|
|
|
func (d *Driver) loadContainer(id string) (containerd.Container, error) {
|
|
return d.client.LoadContainer(d.ctxContainerd, id)
|
|
}
|
|
|
|
func (d *Driver) createTask(container containerd.Container) (containerd.Task, error) {
|
|
return container.NewTask(d.ctxContainerd, cio.NewCreator(cio.WithStdio))
|
|
}
|
|
|
|
func (d *Driver) getTask(container containerd.Container) (containerd.Task, error) {
|
|
return container.Task(d.ctxContainerd, cio.Load)
|
|
}
|