59 lines
1.7 KiB
Go
59 lines
1.7 KiB
Go
|
// Copyright 2015 clair authors
|
||
|
|
//
|
||
|
|
// 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 agreed to 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 database
|
||
|
|
|
||
|
|
import (
|
||
|
|
cerrors "github.com/coreos/clair/utils/errors"
|
||
|
|
"github.com/google/cayley"
|
||
|
|
)
|
||
|
|
|
||
|
|
// UpdateFlag creates a flag or update an existing flag's value
|
||
|
|
func UpdateFlag(name, value string) error {
|
||
|
|
if name == "" || value == "" {
|
||
|
|
log.Warning("could not insert a flag which has an empty name or value")
|
||
|
|
return cerrors.NewBadRequestError("could not insert a flag which has an empty name or value")
|
||
|
|
}
|
||
|
|
|
||
|
|
// Initialize transaction
|
||
|
|
t := cayley.NewTransaction()
|
||
|
|
|
||
|
|
// Get current flag value
|
||
|
|
currentValue, err := GetFlagValue(name)
|
||
|
|
if err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
|
||
|
|
// Build transaction
|
||
|
|
name = "flag:" + name
|
||
|
|
if currentValue != "" {
|
||
|
|
t.RemoveQuad(cayley.Quad(name, "value", currentValue, ""))
|
||
|
|
}
|
||
|
|
t.AddQuad(cayley.Quad(name, "value", value, ""))
|
||
|
|
|
||
|
|
// Apply transaction
|
||
|
|
if err = store.ApplyTransaction(t); err != nil {
|
||
|
|
log.Errorf("failed transaction (UpdateFlag): %s", err)
|
||
|
|
return ErrTransaction
|
||
|
|
}
|
||
|
|
|
||
|
|
// Return
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// GetFlagValue returns the value of the flag given by its name (or an empty string if the flag does not exist)
|
||
|
|
func GetFlagValue(name string) (string, error) {
|
||
|
|
return toValue(cayley.StartPath(store, "flag:"+name).Out("value"))
|
||
|
|
}
|