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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| // Copyright 2022-2023 vArmor 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 utils | ||
|
|
||
| import ( | ||
| "github.com/go-logr/logr" | ||
| "os" | ||
| "sync" | ||
| "time" | ||
| ) | ||
|
|
||
| const BindTokenPath = "/var/run/secrets/tokens" | ||
|
|
||
| var ( | ||
| token string | ||
| mu sync.RWMutex | ||
| updateChan chan bool | ||
| ) | ||
|
|
||
| func InitAndStartTokenRotation(interval time.Duration, logger logr.Logger) { | ||
| updateToken(BindTokenPath, logger) | ||
| updateChan = make(chan bool) | ||
| go startTokenRotation(BindTokenPath, interval, logger, updateChan) | ||
| } | ||
|
|
||
| func startTokenRotation(filePath string, interval time.Duration, logger logr.Logger, update chan bool) { | ||
| ticker := time.NewTicker(interval) | ||
| defer ticker.Stop() | ||
| for { | ||
| select { | ||
| case <-ticker.C: | ||
| updateToken(filePath, logger) | ||
| case <-update: | ||
| updateToken(filePath, logger) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func updateToken(filePath string, logger logr.Logger) { | ||
| newToken, err := os.ReadFile(filePath) | ||
| if err != nil { | ||
| logger.Error(err, "update agent bind token error") | ||
| os.Exit(1) | ||
| } | ||
|
|
||
| mu.Lock() | ||
| token = string(newToken) | ||
| mu.Unlock() | ||
| } | ||
|
|
||
| func GetToken() string { | ||
| mu.RLock() | ||
| defer mu.RUnlock() | ||
| return token | ||
| } |
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