forked from vmware-archive/atc
/
container_provider.go
521 lines (445 loc) · 12.5 KB
/
container_provider.go
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package worker
import (
"fmt"
"os"
"time"
"code.cloudfoundry.org/clock"
"code.cloudfoundry.org/garden"
"code.cloudfoundry.org/lager"
"github.com/concourse/atc/creds"
"github.com/concourse/atc/db"
"github.com/concourse/atc/db/lock"
"github.com/concourse/baggageclaim"
)
const creatingContainerRetryDelay = 1 * time.Second
//go:generate counterfeiter . ContainerProviderFactory
type ContainerProviderFactory interface {
ContainerProviderFor(Worker) ContainerProvider
}
type containerProviderFactory struct {
gardenClient garden.Client
baggageclaimClient baggageclaim.Client
volumeClient VolumeClient
imageFactory ImageFactory
dbVolumeFactory db.VolumeFactory
dbResourceCacheFactory db.ResourceCacheFactory
dbResourceConfigFactory db.ResourceConfigFactory
dbTeamFactory db.TeamFactory
lockFactory lock.LockFactory
httpProxyURL string
httpsProxyURL string
noProxy string
clock clock.Clock
}
func NewContainerProviderFactory(
gardenClient garden.Client,
baggageclaimClient baggageclaim.Client,
volumeClient VolumeClient,
imageFactory ImageFactory,
dbVolumeFactory db.VolumeFactory,
dbResourceCacheFactory db.ResourceCacheFactory,
dbResourceConfigFactory db.ResourceConfigFactory,
dbTeamFactory db.TeamFactory,
lockFactory lock.LockFactory,
httpProxyURL string,
httpsProxyURL string,
noProxy string,
clock clock.Clock,
) ContainerProviderFactory {
return &containerProviderFactory{
gardenClient: gardenClient,
baggageclaimClient: baggageclaimClient,
volumeClient: volumeClient,
imageFactory: imageFactory,
dbVolumeFactory: dbVolumeFactory,
dbResourceCacheFactory: dbResourceCacheFactory,
dbResourceConfigFactory: dbResourceConfigFactory,
dbTeamFactory: dbTeamFactory,
lockFactory: lockFactory,
httpProxyURL: httpProxyURL,
httpsProxyURL: httpsProxyURL,
noProxy: noProxy,
clock: clock,
}
}
func (f *containerProviderFactory) ContainerProviderFor(worker Worker) ContainerProvider {
return &containerProvider{
gardenClient: f.gardenClient,
baggageclaimClient: f.baggageclaimClient,
volumeClient: f.volumeClient,
imageFactory: f.imageFactory,
dbVolumeFactory: f.dbVolumeFactory,
dbResourceCacheFactory: f.dbResourceCacheFactory,
dbResourceConfigFactory: f.dbResourceConfigFactory,
dbTeamFactory: f.dbTeamFactory,
lockFactory: f.lockFactory,
httpProxyURL: f.httpProxyURL,
httpsProxyURL: f.httpsProxyURL,
noProxy: f.noProxy,
clock: f.clock,
worker: worker,
}
}
//go:generate counterfeiter . ContainerProvider
type ContainerProvider interface {
FindCreatedContainerByHandle(
logger lager.Logger,
handle string,
teamID int,
) (Container, bool, error)
FindOrCreateContainer(
logger lager.Logger,
cancel <-chan os.Signal,
resourceUser db.ResourceUser,
owner db.ContainerOwner,
delegate ImageFetchingDelegate,
metadata db.ContainerMetadata,
spec ContainerSpec,
resourceTypes creds.VersionedResourceTypes,
) (Container, error)
}
type containerProvider struct {
gardenClient garden.Client
baggageclaimClient baggageclaim.Client
volumeClient VolumeClient
imageFactory ImageFactory
dbVolumeFactory db.VolumeFactory
dbResourceCacheFactory db.ResourceCacheFactory
dbResourceConfigFactory db.ResourceConfigFactory
dbTeamFactory db.TeamFactory
lockFactory lock.LockFactory
provider WorkerProvider
worker Worker
httpProxyURL string
httpsProxyURL string
noProxy string
clock clock.Clock
}
func (p *containerProvider) FindOrCreateContainer(
logger lager.Logger,
cancel <-chan os.Signal,
resourceUser db.ResourceUser,
owner db.ContainerOwner,
delegate ImageFetchingDelegate,
metadata db.ContainerMetadata,
spec ContainerSpec,
resourceTypes creds.VersionedResourceTypes,
) (Container, error) {
for {
var gardenContainer garden.Container
creatingContainer, createdContainer, err := p.dbTeamFactory.GetByID(spec.TeamID).FindContainerOnWorker(
p.worker.Name(),
owner,
)
if err != nil {
logger.Error("failed-to-find-container-in-db", err)
return nil, err
}
if createdContainer != nil {
logger = logger.WithData(lager.Data{"container": createdContainer.Handle()})
logger.Debug("found-created-container-in-db")
gardenContainer, err = p.gardenClient.Lookup(createdContainer.Handle())
if err != nil {
logger.Error("failed-to-lookup-created-container-in-garden", err)
return nil, err
}
return p.constructGardenWorkerContainer(
logger,
createdContainer,
gardenContainer,
)
}
if creatingContainer != nil {
logger = logger.WithData(lager.Data{"container": creatingContainer.Handle()})
logger.Debug("found-creating-container-in-db")
gardenContainer, err = p.gardenClient.Lookup(creatingContainer.Handle())
if err != nil {
if _, ok := err.(garden.ContainerNotFoundError); !ok {
logger.Error("failed-to-lookup-creating-container-in-garden", err)
return nil, err
}
}
}
if gardenContainer != nil {
logger.Debug("found-created-container-in-garden")
} else {
image, err := p.imageFactory.GetImage(
logger,
p.worker,
p.volumeClient,
spec.ImageSpec,
spec.TeamID,
delegate,
resourceUser,
resourceTypes,
)
if err != nil {
return nil, err
}
if creatingContainer == nil {
logger.Debug("creating-container-in-db")
creatingContainer, err = p.dbTeamFactory.GetByID(spec.TeamID).CreateContainer(
p.worker.Name(),
owner,
metadata,
)
if err != nil {
logger.Error("failed-to-create-container-in-db", err)
return nil, err
}
logger = logger.WithData(lager.Data{"container": creatingContainer.Handle()})
logger.Debug("created-creating-container-in-db")
}
lock, acquired, err := p.lockFactory.Acquire(logger, lock.NewContainerCreatingLockID(creatingContainer.ID()))
if err != nil {
logger.Error("failed-to-acquire-container-creating-lock", err)
return nil, err
}
if !acquired {
p.clock.Sleep(creatingContainerRetryDelay)
continue
}
defer lock.Release()
logger.Debug("fetching-image")
fetchedImage, err := image.FetchForContainer(logger, cancel, creatingContainer)
if err != nil {
logger.Error("failed-to-fetch-image-for-container", err)
return nil, err
}
logger.Debug("creating-container-in-garden")
gardenContainer, err = p.createGardenContainer(
logger,
creatingContainer,
spec,
fetchedImage,
)
if err != nil {
logger.Error("failed-to-create-container-in-garden", err)
return nil, err
}
logger.Debug("created-container-in-garden")
}
createdContainer, err = creatingContainer.Created()
if err != nil {
logger.Error("failed-to-mark-container-as-created", err)
return nil, err
}
logger.Debug("created-container-in-db")
return p.constructGardenWorkerContainer(
logger,
createdContainer,
gardenContainer,
)
}
}
func (p *containerProvider) FindCreatedContainerByHandle(
logger lager.Logger,
handle string,
teamID int,
) (Container, bool, error) {
gardenContainer, err := p.gardenClient.Lookup(handle)
if err != nil {
if _, ok := err.(garden.ContainerNotFoundError); ok {
logger.Info("container-not-found")
return nil, false, nil
}
logger.Error("failed-to-lookup-on-garden", err)
return nil, false, err
}
createdContainer, found, err := p.dbTeamFactory.GetByID(teamID).FindCreatedContainerByHandle(handle)
if err != nil {
logger.Error("failed-to-lookup-in-db", err)
return nil, false, err
}
if !found {
return nil, false, nil
}
createdVolumes, err := p.dbVolumeFactory.FindVolumesForContainer(createdContainer)
if err != nil {
return nil, false, err
}
container, err := newGardenWorkerContainer(
logger,
gardenContainer,
createdContainer,
createdVolumes,
p.gardenClient,
p.volumeClient,
p.worker.Name(),
)
if err != nil {
logger.Error("failed-to-construct-container", err)
return nil, false, err
}
return container, true, nil
}
func (p *containerProvider) constructGardenWorkerContainer(
logger lager.Logger,
createdContainer db.CreatedContainer,
gardenContainer garden.Container,
) (Container, error) {
createdVolumes, err := p.dbVolumeFactory.FindVolumesForContainer(createdContainer)
if err != nil {
logger.Error("failed-to-find-container-volumes", err)
return nil, err
}
return newGardenWorkerContainer(
logger,
gardenContainer,
createdContainer,
createdVolumes,
p.gardenClient,
p.volumeClient,
p.worker.Name(),
)
}
func (p *containerProvider) createGardenContainer(
logger lager.Logger,
creatingContainer db.CreatingContainer,
spec ContainerSpec,
fetchedImage FetchedImage,
) (garden.Container, error) {
volumeMounts := []VolumeMount{}
scratchVolume, err := p.volumeClient.FindOrCreateVolumeForContainer(
logger,
VolumeSpec{
Strategy: baggageclaim.EmptyStrategy{},
Privileged: fetchedImage.Privileged,
},
creatingContainer,
spec.TeamID,
"/scratch",
)
if err != nil {
return nil, err
}
volumeMounts = append(volumeMounts, VolumeMount{
Volume: scratchVolume,
MountPath: "/scratch",
})
if spec.Dir != "" && !p.anyMountTo(spec.Dir, spec.Inputs) {
workdirVolume, volumeErr := p.volumeClient.FindOrCreateVolumeForContainer(
logger,
VolumeSpec{
Strategy: baggageclaim.EmptyStrategy{},
Privileged: fetchedImage.Privileged,
},
creatingContainer,
spec.TeamID,
spec.Dir,
)
if volumeErr != nil {
return nil, volumeErr
}
volumeMounts = append(volumeMounts, VolumeMount{
Volume: workdirVolume,
MountPath: spec.Dir,
})
}
for _, inputSource := range spec.Inputs {
var inputVolume Volume
localVolume, found, err := inputSource.Source().VolumeOn(p.worker)
if err != nil {
return nil, err
}
if found {
inputVolume, err = p.volumeClient.FindOrCreateCOWVolumeForContainer(
logger,
VolumeSpec{
Strategy: localVolume.COWStrategy(),
Privileged: fetchedImage.Privileged,
},
creatingContainer,
localVolume,
spec.TeamID,
inputSource.DestinationPath(),
)
if err != nil {
return nil, err
}
} else {
inputVolume, err = p.volumeClient.FindOrCreateVolumeForContainer(
logger,
VolumeSpec{
Strategy: baggageclaim.EmptyStrategy{},
Privileged: fetchedImage.Privileged,
},
creatingContainer,
spec.TeamID,
inputSource.DestinationPath(),
)
if err != nil {
return nil, err
}
err = inputSource.Source().StreamTo(inputVolume)
if err != nil {
return nil, err
}
}
volumeMounts = append(volumeMounts, VolumeMount{
Volume: inputVolume,
MountPath: inputSource.DestinationPath(),
})
}
for _, outputPath := range spec.Outputs {
outVolume, volumeErr := p.volumeClient.FindOrCreateVolumeForContainer(
logger,
VolumeSpec{
Strategy: baggageclaim.EmptyStrategy{},
Privileged: fetchedImage.Privileged,
},
creatingContainer,
spec.TeamID,
outputPath,
)
if volumeErr != nil {
return nil, volumeErr
}
volumeMounts = append(volumeMounts, VolumeMount{
Volume: outVolume,
MountPath: outputPath,
})
}
bindMounts := []garden.BindMount{}
volumeHandleMounts := map[string]string{}
for _, mount := range volumeMounts {
bindMounts = append(bindMounts, garden.BindMount{
SrcPath: mount.Volume.Path(),
DstPath: mount.MountPath,
Mode: garden.BindMountModeRW,
})
volumeHandleMounts[mount.Volume.Handle()] = mount.MountPath
}
gardenProperties := garden.Properties{}
if spec.User != "" {
gardenProperties[userPropertyName] = spec.User
} else {
gardenProperties[userPropertyName] = fetchedImage.Metadata.User
}
env := append(fetchedImage.Metadata.Env, spec.Env...)
if p.httpProxyURL != "" {
env = append(env, fmt.Sprintf("http_proxy=%s", p.httpProxyURL))
}
if p.httpsProxyURL != "" {
env = append(env, fmt.Sprintf("https_proxy=%s", p.httpsProxyURL))
}
if p.noProxy != "" {
env = append(env, fmt.Sprintf("no_proxy=%s", p.noProxy))
}
return p.gardenClient.Create(garden.ContainerSpec{
Handle: creatingContainer.Handle(),
RootFSPath: fetchedImage.URL,
Privileged: fetchedImage.Privileged,
BindMounts: bindMounts,
Env: env,
Properties: gardenProperties,
})
}
func (p *containerProvider) anyMountTo(path string, inputs []InputSource) bool {
for _, input := range inputs {
if input.DestinationPath() == path {
return true
}
}
return false
}