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restore.go
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restore.go
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// MIT License
//
// Copyright (c) 2020 Lack
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
package cli
import (
"errors"
"fmt"
"net/url"
"github.com/lack-io/cli"
log "github.com/lack-io/vine/lib/logger"
"github.com/lack-io/vine/lib/store/cli/snapshot"
)
// Restore is the entrypoint for vine store restore
func Restore(ctx *cli.Context) error {
s, err := makeStore(ctx)
if err != nil {
return fmt.Errorf("couldn't construct a store: %w", err)
}
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 fmt.Errorf("source is invalid: %w", err)
}
switch u.Scheme {
case "file":
rs = snapshot.NewFileRestore(snapshot.Source(source))
default:
return fmt.Errorf("unsupported source scheme: %s", u.Scheme)
}
err = rs.Init()
if err != nil {
return fmt.Errorf("failed to initialise the restorer: %w", err)
}
recordChan, err := rs.Start()
if err != nil {
return fmt.Errorf("couldn't start the restorer: %w", err)
}
counter := uint64(0)
for r := range recordChan {
err := s.Write(r)
if err != nil {
log.Debugf("couldn't write key %s to store %s", r.Key, s.String())
} else {
counter++
}
}
log.Debugf("Restored %d records", counter)
return nil
}