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restore.go
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restore.go
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package cli
import (
"net/url"
"github.com/micro/cli/v2"
"github.com/dreamlu/go-micro/v2/logger"
"github.com/dreamlu/micro/v2/store/snapshot"
"github.com/pkg/errors"
)
// Restore is the entrypoint for micro store restore
func Restore(ctx *cli.Context) error {
s, err := makeStore(ctx)
if err != nil {
return errors.Wrap(err, "couldn't construct a store")
}
log := logger.DefaultLogger
var rs snapshot.Restore
source := ctx.String("source")
if len(source) == 0 {
return errors.New("source flag must be set")
}
u, err := url.Parse(source)
if err != nil {
return errors.Wrap(err, "source is invalid")
}
switch u.Scheme {
case "file":
rs = snapshot.NewFileRestore(snapshot.Source(source))
default:
return errors.Errorf("unsupported source scheme: %s", u.Scheme)
}
err = rs.Init()
if err != nil {
return errors.Wrap(err, "failed to initialise the restorer")
}
recordChan, err := rs.Start()
if err != nil {
return errors.Wrap(err, "couldn't start the restorer")
}
counter := uint64(0)
for r := range recordChan {
err := s.Write(r)
if err != nil {
log.Logf(logger.ErrorLevel, "couldn't write key %s to store %s", r.Key, s.String())
} else {
counter++
}
}
log.Logf(logger.DebugLevel, "Restored %d records", counter)
return nil
}