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db_provider.go
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db_provider.go
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package worker
import (
"errors"
"time"
"code.cloudfoundry.org/clock"
gclient "code.cloudfoundry.org/garden/client"
gconn "code.cloudfoundry.org/garden/client/connection"
"code.cloudfoundry.org/lager"
"github.com/concourse/baggageclaim"
bclient "github.com/concourse/baggageclaim/client"
"github.com/concourse/atc/db"
"github.com/concourse/atc/worker/transport"
)
//go:generate counterfeiter . WorkerDB
type WorkerDB interface {
Workers() ([]db.SavedWorker, error)
GetWorker(string) (db.SavedWorker, bool, error)
CreateContainer(container db.Container, ttl time.Duration, maxLifetime time.Duration, volumeHandles []string) (db.SavedContainer, error)
GetContainer(string) (db.SavedContainer, bool, error)
FindContainerByIdentifier(db.ContainerIdentifier) (db.SavedContainer, bool, error)
FindWorkerCheckResourceTypeVersion(workerName string, checkType string) (string, bool, error)
UpdateExpiresAtOnContainer(handle string, ttl time.Duration) error
ReapContainer(handle string) error
InsertVolume(db.Volume) error
GetVolumesByIdentifier(db.VolumeIdentifier) ([]db.SavedVolume, error)
GetVolumeTTL(volumeHandle string) (time.Duration, bool, error)
ReapVolume(handle string) error
SetVolumeTTL(string, time.Duration) error
SetVolumeSizeInBytes(string, int64) error
}
var ErrMultipleWorkersWithName = errors.New("More than one worker has given worker name")
type dbProvider struct {
logger lager.Logger
db WorkerDB
dialer gconn.DialerFunc
retryPolicy transport.RetryPolicy
imageFactory ImageFactory
}
func NewDBWorkerProvider(
logger lager.Logger,
db WorkerDB,
dialer gconn.DialerFunc,
retryPolicy transport.RetryPolicy,
imageFactory ImageFactory,
) WorkerProvider {
return &dbProvider{
logger: logger,
db: db,
dialer: dialer,
retryPolicy: retryPolicy,
imageFactory: imageFactory,
}
}
func (provider *dbProvider) Workers() ([]Worker, error) {
savedWorkers, err := provider.db.Workers()
if err != nil {
return nil, err
}
tikTok := clock.NewClock()
workers := make([]Worker, len(savedWorkers))
for i, savedWorker := range savedWorkers {
workers[i] = provider.newGardenWorker(tikTok, savedWorker)
}
return workers, nil
}
func (provider *dbProvider) GetWorker(name string) (Worker, bool, error) {
savedWorker, found, err := provider.db.GetWorker(name)
if err != nil {
return nil, false, err
}
if !found {
return nil, false, nil
}
tikTok := clock.NewClock()
worker := provider.newGardenWorker(tikTok, savedWorker)
return worker, found, nil
}
func (provider *dbProvider) FindContainerForIdentifier(id Identifier) (db.SavedContainer, bool, error) {
return provider.db.FindContainerByIdentifier(db.ContainerIdentifier(id))
}
func (provider *dbProvider) GetContainer(handle string) (db.SavedContainer, bool, error) {
return provider.db.GetContainer(handle)
}
func (provider *dbProvider) ReapContainer(handle string) error {
return provider.db.ReapContainer(handle)
}
func (provider *dbProvider) newGardenWorker(tikTok clock.Clock, savedWorker db.SavedWorker) Worker {
gcf := NewGardenConnectionFactory(
provider.db,
provider.logger.Session("garden-connection"),
savedWorker.Name,
provider.retryPolicy,
)
connection := NewRetryableConnection(gcf.BuildConnection())
var bClient baggageclaim.Client
if savedWorker.BaggageclaimURL != "" {
bClient = bclient.New(savedWorker.BaggageclaimURL)
}
volumeFactory := NewVolumeFactory(
provider.db,
tikTok,
)
volumeClient := NewVolumeClient(
bClient,
provider.db,
volumeFactory,
savedWorker.Name,
)
return NewGardenWorker(
gclient.New(connection),
bClient,
volumeClient,
volumeFactory,
provider.imageFactory,
provider.db,
provider,
tikTok,
savedWorker.ActiveContainers,
savedWorker.ResourceTypes,
savedWorker.Platform,
savedWorker.Tags,
savedWorker.TeamID,
savedWorker.Name,
savedWorker.StartTime,
savedWorker.HTTPProxyURL,
savedWorker.HTTPSProxyURL,
savedWorker.NoProxy,
)
}