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register.go
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register.go
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/*
* Tencent is pleased to support the open source community by making Blueking Container Service available.
* Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
* Licensed under the MIT License (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
* http://opensource.org/licenses/MIT
* 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 upgrader
import (
"context"
"fmt"
"regexp"
"sync"
"time"
"github.com/Tencent/bk-bcs/bcs-common/common/blog"
)
// Upgrade define a version upgrade
type Upgrade struct {
version string // eg: u1.21.202109241520
do func(context.Context, UpgradeHelper) error
}
var (
upgradePool = []Upgrade{}
registLock sync.Mutex
versionRegexp = regexp.MustCompile(`^u(\d+\.){2}\d{12}$`)
)
// ValidateVersionFormat validate the format of version
func ValidateVersionFormat(version string) error {
if !versionRegexp.MatchString(version) {
err := fmt.Errorf("invalid upgrade version: %s,please use a valid format:eg: u1.21.202109241520", version)
return err
}
v, err := ParseVersion(version)
if err != nil {
return err
}
// third field in version split by `.` shouldn't greater than tomorrow
timeFormat := "200601021504"
maxMigrationTime := time.Now().AddDate(0, 0, 1)
maxVersionCurrently := maxMigrationTime.Format(timeFormat)
if v.Patch >= maxVersionCurrently {
err := fmt.Errorf("invalid time field of upgrade version: %s, "+
"please use current time as part of upgrade version:eg: u1.21.%s", version, time.Now().Format(timeFormat))
return err
}
return nil
}
// RegisterUpgrade register upgrade programe
func RegisterUpgrade(version string, handlerFunc func(context.Context, UpgradeHelper) error) {
if err := ValidateVersionFormat(version); err != nil {
blog.Fatalf("ValidateVersionFormat failed, err: %s", err.Error())
}
registLock.Lock()
defer registLock.Unlock()
u := Upgrade{
version: version,
do: func(ctx context.Context, helper UpgradeHelper) error {
return handlerFunc(ctx, helper)
},
}
upgradePool = append(upgradePool, u)
}