/
configure.go
67 lines (57 loc) · 1.9 KB
/
configure.go
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package postgres
import (
"github.com/pkg/errors"
"github.com/spf13/viper"
"github.com/wal-g/tracelog"
"github.com/wal-g/wal-g/internal"
"github.com/wal-g/wal-g/internal/fsutil"
)
// ConfigureWalUploader connects to storage and creates an uploader. It makes sure
// that a valid session has started; if invalid, returns AWS error
// and `<nil>` values.
func ConfigureWalUploader() (uploader *WalUploader, err error) {
uploader, err = ConfigureWalUploaderWithoutCompressMethod()
if err != nil {
return nil, err
}
folder := uploader.UploadingFolder
deltaFileManager := uploader.DeltaFileManager
compressor, err := internal.ConfigureCompressor()
if err != nil {
return nil, errors.Wrap(err, "failed to configure compression")
}
uploader = NewWalUploader(compressor, folder, deltaFileManager)
return uploader, err
}
func ConfigureWalUploaderWithoutCompressMethod() (uploader *WalUploader, err error) {
folder, err := internal.ConfigureFolder()
if err != nil {
return nil, errors.Wrap(err, "failed to configure folder")
}
useWalDelta, deltaDataFolder, err := configureWalDeltaUsage()
if err != nil {
return nil, errors.Wrap(err, "failed to configure WAL Delta usage")
}
var deltaFileManager *DeltaFileManager = nil
if useWalDelta {
deltaFileManager = NewDeltaFileManager(deltaDataFolder)
}
uploader = NewWalUploader(nil, folder, deltaFileManager)
return uploader, err
}
// TODO : unit tests
func configureWalDeltaUsage() (useWalDelta bool, deltaDataFolder fsutil.DataFolder, err error) {
useWalDelta = viper.GetBool(internal.UseWalDeltaSetting)
if !useWalDelta {
return
}
dataFolderPath := internal.GetDataFolderPath()
deltaDataFolder, err = fsutil.NewDiskDataFolder(dataFolderPath)
if err != nil {
useWalDelta = false
tracelog.WarningLogger.Printf("can't use wal delta feature because can't open delta data folder '%s'"+
" due to error: '%v'\n", dataFolderPath, err)
err = nil
}
return
}