surrealpatch/util/keys/edge.go
Tobie Morgan Hitchcock 001d7f866c Prevent datarace, by not using global variable when decoding
Don’t use the global variable ‘skip’ to decode into, as this causes a data race, when decoding keys from inside multiple different goroutines. Instead we now create a new string variable for every decode function, which will be created on the heap and ignored when the function returns.
2017-12-01 00:34:44 +00:00

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// Copyright © 2016 Abcum Ltd
//
// 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 keys
// Edge ...
type Edge struct {
KV string
NS string
DB string
TB string
ID interface{}
TK string
TP string
FT string
FK interface{}
}
// init initialises the key
func (k *Edge) init() *Edge {
switch k.TK {
case "«»":
case "", "":
case "«", "»":
default:
k.TK = "«»"
}
return k
}
// Copy creates a copy of the key
func (k *Edge) Copy() *Edge {
return &Edge{
KV: k.KV,
NS: k.NS,
DB: k.DB,
TB: k.TB,
ID: k.ID,
TK: k.TK,
TP: k.TP,
FT: k.FT,
FK: k.FK,
}
}
// Encode encodes the key into binary
func (k *Edge) Encode() []byte {
k.init()
return encode(k.KV, k.NS, "*", k.DB, "*", k.TB, "*", k.ID, k.TK, k.TP, k.FT, k.FK)
}
// Decode decodes the key from binary
func (k *Edge) Decode(data []byte) {
k.init()
var __ string
decode(data, &k.KV, &k.NS, &__, &k.DB, &__, &k.TB, &__, &k.ID, &k.TK, &k.TP, &k.FT, &k.FK)
}
// String returns a string representation of the key
func (k *Edge) String() string {
k.init()
return output(k.KV, k.NS, "*", k.DB, "*", k.TB, "*", k.ID, k.TK, k.TP, k.FT, k.FK)
}