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dockercontainer.go
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dockercontainer.go
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package executables
import (
"context"
"fmt"
"path/filepath"
"strconv"
"sync"
"time"
"github.com/aws/eks-anywhere/pkg/logger"
)
type dockerContainer struct {
image string
workingDir string
mountDirs []string
containerName string
dockerBinary *Docker
initOnce, closeOnce sync.Once
}
func newDockerContainer(image, workingDir string, mountDirs []string, dockerBinary *Docker) *dockerContainer {
return &dockerContainer{
image: image,
workingDir: workingDir,
mountDirs: mountDirs,
containerName: containerNamePrefix + strconv.FormatInt(time.Now().UnixNano(), 10),
dockerBinary: dockerBinary,
}
}
func (d *dockerContainer) init(ctx context.Context) error {
var err error
d.initOnce.Do(func() {
if err = d.dockerBinary.PullImage(ctx, d.image); err != nil {
return
}
var absWorkingDir string
absWorkingDir, err = filepath.Abs(d.workingDir)
if err != nil {
err = fmt.Errorf("error getting abs path for mount dir: %v", err)
return
}
params := []string{"run", "-d", "--name", d.containerName, "--network", "host", "-w", absWorkingDir, "-v", "/var/run/docker.sock:/var/run/docker.sock"}
for _, m := range d.mountDirs {
var absMountDir string
absMountDir, err = filepath.Abs(m)
if err != nil {
err = fmt.Errorf("error getting abs path for mount dir: %v", err)
return
}
params = append(params, "-v", fmt.Sprintf("%[1]s:%[1]s", absMountDir))
}
// start container and keep it running in the background
logger.V(3).Info("Initializing long running container", "name", d.containerName, "image", d.image)
params = append(params, "--entrypoint", "sleep", d.image, "infinity")
_, err = d.dockerBinary.Execute(ctx, params...)
})
return err
}
func (d *dockerContainer) close(ctx context.Context) error {
if d == nil {
return nil
}
var err error
d.closeOnce.Do(func() {
logger.V(3).Info("Cleaning up long running container", "name", d.containerName)
_, err = d.dockerBinary.Execute(ctx, "rm", "-f", "-v", d.containerName)
})
return err
}