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keyspace.go
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keyspace.go
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/*
Copyright 2017 Google Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreedto in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package topovalidator
import (
"fmt"
"golang.org/x/net/context"
"github.com/xsec-lab/go/vt/topo"
topodatapb "github.com/xsec-lab/go/vt/proto/topodata"
)
// This file contains the Keyspace validator. It uses GetKeyspaces to
// find all the keyspaces, and tries to read them. If any error occurs
// during the reading, it adds a fixer to either Delete or Create the
// keyspace.
// RegisterKeyspaceValidator registers the Keyspace Validator.
func RegisterKeyspaceValidator() {
RegisterValidator("Keyspace Validator", &KeyspaceValidator{})
}
// KeyspaceValidator implements Validator.
type KeyspaceValidator struct{}
// Audit is part of the Validator interface.
func (kv *KeyspaceValidator) Audit(ctx context.Context, ts *topo.Server, w *Workflow) error {
keyspaces, err := ts.GetKeyspaces(ctx)
if err != nil {
return err
}
for _, keyspace := range keyspaces {
_, err := ts.GetKeyspace(ctx, keyspace)
if err != nil {
w.AddFixer(keyspace, fmt.Sprintf("Error: %v", err), &KeyspaceFixer{
ts: ts,
keyspace: keyspace,
}, []string{"Create", "Delete"})
}
}
return nil
}
// KeyspaceFixer implements Fixer.
type KeyspaceFixer struct {
ts *topo.Server
keyspace string
}
// Action is part of the Fixer interface.
func (kf *KeyspaceFixer) Action(ctx context.Context, name string) error {
if name == "Create" {
return kf.ts.CreateKeyspace(ctx, kf.keyspace, &topodatapb.Keyspace{})
}
if name == "Delete" {
return kf.ts.DeleteKeyspace(ctx, kf.keyspace)
}
return fmt.Errorf("unknown KeyspaceFixer action: %v", name)
}