127 lines
3.2 KiB
Go
127 lines
3.2 KiB
Go
/*
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Copyright 2021 Alibaba Group Holding Limited.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package name
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import (
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"fmt"
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polardbxv1 "github.com/alibaba/polardbx-operator/api/v1"
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"github.com/alibaba/polardbx-operator/pkg/meta/core/gms/security"
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"strings"
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)
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// Naming functions related to restore phase
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func StableNamePrefix(xstore *polardbxv1.XStore) string {
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if len(xstore.Status.Rand) > 0 {
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return fmt.Sprintf("%s-%s-", xstore.Name, xstore.Status.Rand)
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} else {
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return fmt.Sprintf("%s-", xstore.Name)
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}
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}
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func StableName(xstore *polardbxv1.XStore, suffix string) string {
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return StableNamePrefix(xstore) + suffix
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}
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func GetStableNameSuffix(xstore *polardbxv1.XStore, name string) string {
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prefix := StableNamePrefix(xstore)
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if strings.HasPrefix(name, prefix) {
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return name[len(prefix):]
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} else {
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panic("not start with prefix: " + prefix)
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}
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}
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func PolarDBXBackupStableNamePrefix(polardbxBackup *polardbxv1.PolarDBXBackup) string {
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return fmt.Sprintf("%s-", polardbxBackup.Name)
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}
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func PolarDBXBackupStableName(polardbxBackup *polardbxv1.PolarDBXBackup, suffix string) string {
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return PolarDBXBackupStableNamePrefix(polardbxBackup) + suffix
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}
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func XStoreBackupStableNamePrefix(xstoreBackup *polardbxv1.XStoreBackup) string {
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return fmt.Sprintf("%s-", xstoreBackup.Name)
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}
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func XStoreBackupStableName(xstoreBackup *polardbxv1.XStoreBackup, suffix string) string {
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return XStoreBackupStableNamePrefix(xstoreBackup) + suffix
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}
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// Splicer is a helper to splice object name, which also provides alternative name to ensure length of name is under limit
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type Splicer struct {
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Tokens *[]string
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Delimiter string
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Limit int
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Prefix string
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}
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func NewSplicer(options ...func(*Splicer)) *Splicer {
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splicer := &Splicer{
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Delimiter: "-",
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Limit: 63,
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}
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for _, option := range options {
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option(splicer)
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}
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return splicer
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}
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func (s *Splicer) getAbbreviateName(sourceName string) string {
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hashVal := security.MustSha1Hash(sourceName)
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if s.Prefix == "" {
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return hashVal
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}
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return fmt.Sprintf("%s%s%s", s.Prefix, s.Delimiter, hashVal)
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}
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func (s *Splicer) GetName() string {
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name := strings.Join(*s.Tokens, s.Delimiter)
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if s.Limit == 0 || len(name) < s.Limit {
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return name
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}
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return s.getAbbreviateName(name)
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}
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func WithTokens(tokens ...string) func(*Splicer) {
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return func(splicer *Splicer) {
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splicer.Tokens = &tokens
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}
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}
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func WithDelimiter(delimiter string) func(*Splicer) {
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return func(splicer *Splicer) {
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splicer.Delimiter = delimiter
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}
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}
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func WithLimit(limit int) func(*Splicer) {
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return func(splicer *Splicer) {
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splicer.Limit = limit
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}
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}
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func WithPrefix(prefix string) func(*Splicer) {
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return func(splicer *Splicer) {
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splicer.Prefix = prefix
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}
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}
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func NewSplicedName(options ...func(*Splicer)) string {
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return NewSplicer(options...).GetName()
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}
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