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provider.go
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provider.go
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package blobstore
import (
"fmt"
"path"
boshcrypto "github.com/cloudfoundry/bosh-utils/crypto"
bosherr "github.com/cloudfoundry/bosh-utils/errors"
boshlog "github.com/cloudfoundry/bosh-utils/logger"
"github.com/cloudfoundry/bosh-utils/system"
boshuuid "github.com/cloudfoundry/bosh-utils/uuid"
)
const (
BlobstoreTypeDummy = "dummy"
BlobstoreTypeLocal = "local"
)
type Provider struct {
fs system.FileSystem
runner system.CmdRunner
configDir string
uuidGen boshuuid.Generator
logger boshlog.Logger
}
func NewProvider(
fs system.FileSystem,
runner system.CmdRunner,
configDir string,
logger boshlog.Logger,
) Provider {
return Provider{
uuidGen: boshuuid.NewGenerator(),
fs: fs,
runner: runner,
configDir: configDir,
logger: logger,
}
}
func (p Provider) Get(storeType string, options map[string]interface{}) (DigestBlobstore, error) {
var blobstore Blobstore
switch storeType {
case BlobstoreTypeDummy:
blobstore = newDummyBlobstore()
case BlobstoreTypeLocal:
blobstore = NewLocalBlobstore(
p.fs,
p.uuidGen,
options,
)
default:
blobstore = NewExternalBlobstore(
storeType,
options,
p.fs,
p.runner,
p.uuidGen,
path.Join(p.configDir, fmt.Sprintf("blobstore-%s.json", storeType)),
)
}
createAlgos := []boshcrypto.Algorithm{boshcrypto.DigestAlgorithmSHA1}
verifiableBlobstore := NewDigestVerifiableBlobstore(blobstore, p.fs, createAlgos)
digestBlobstore := NewRetryableBlobstore(verifiableBlobstore, 3, p.logger)
err := blobstore.Validate()
if err != nil {
return nil, bosherr.WrapError(err, "Validating blobstore")
}
return digestBlobstore, nil
}