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fetch_source_provider.go
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fetch_source_provider.go
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package resource
import (
"context"
"code.cloudfoundry.org/lager"
"github.com/concourse/atc"
"github.com/concourse/atc/creds"
"github.com/concourse/atc/db"
"github.com/concourse/atc/worker"
)
//go:generate counterfeiter . FetchSourceProviderFactory
type FetchSourceProviderFactory interface {
NewFetchSourceProvider(
logger lager.Logger,
session Session,
metadata Metadata,
tags atc.Tags,
teamID int,
resourceTypes creds.VersionedResourceTypes,
resourceInstance ResourceInstance,
imageFetchingDelegate worker.ImageFetchingDelegate,
) FetchSourceProvider
}
//go:generate counterfeiter . FetchSourceProvider
type FetchSourceProvider interface {
Get() (FetchSource, error)
}
//go:generate counterfeiter . FetchSource
type FetchSource interface {
LockName() (string, error)
Find() (VersionedSource, bool, error)
Create(context.Context) (VersionedSource, error)
}
type fetchSourceProviderFactory struct {
workerClient worker.Client
dbResourceCacheFactory db.ResourceCacheFactory
}
func NewFetchSourceProviderFactory(
workerClient worker.Client,
dbResourceCacheFactory db.ResourceCacheFactory,
) FetchSourceProviderFactory {
return &fetchSourceProviderFactory{
workerClient: workerClient,
dbResourceCacheFactory: dbResourceCacheFactory,
}
}
func (f *fetchSourceProviderFactory) NewFetchSourceProvider(
logger lager.Logger,
session Session,
metadata Metadata,
tags atc.Tags,
teamID int,
resourceTypes creds.VersionedResourceTypes,
resourceInstance ResourceInstance,
imageFetchingDelegate worker.ImageFetchingDelegate,
) FetchSourceProvider {
return &fetchSourceProvider{
logger: logger,
session: session,
metadata: metadata,
tags: tags,
teamID: teamID,
resourceTypes: resourceTypes,
resourceInstance: resourceInstance,
imageFetchingDelegate: imageFetchingDelegate,
workerClient: f.workerClient,
dbResourceCacheFactory: f.dbResourceCacheFactory,
}
}
type fetchSourceProvider struct {
logger lager.Logger
session Session
metadata Metadata
tags atc.Tags
teamID int
resourceTypes creds.VersionedResourceTypes
resourceInstance ResourceInstance
workerClient worker.Client
imageFetchingDelegate worker.ImageFetchingDelegate
dbResourceCacheFactory db.ResourceCacheFactory
}
func (f *fetchSourceProvider) Get() (FetchSource, error) {
resourceSpec := worker.WorkerSpec{
ResourceType: string(f.resourceInstance.ResourceType()),
Tags: f.tags,
TeamID: f.teamID,
}
chosenWorker, err := f.workerClient.Satisfying(f.logger.Session("fetch-source-provider"), resourceSpec, f.resourceTypes)
if err != nil {
f.logger.Error("no-workers-satisfying-spec", err)
return nil, err
}
return NewResourceInstanceFetchSource(
f.logger,
f.resourceInstance,
chosenWorker,
f.resourceTypes,
f.tags,
f.teamID,
f.session,
f.metadata,
f.imageFetchingDelegate,
f.dbResourceCacheFactory,
), nil
}