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// Copyright 2023 LiveKit, Inc.
//
// 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 (
"context"
"errors"
"math/rand/v2"
"time"
)
type terminalError struct {
error
}
func (e terminalError) Unwrap() error {
return e.error
}
func TerminalError(err error) error {
return terminalError{err}
}
func ErrIsTerminal(err error) bool {
var terr terminalError
return errors.As(err, &terr)
}
func Retry(ctx context.Context, minTime, maxTime, timeout time.Duration, f func(ctx context.Context) error) error {
retryTime := minTime
ctx, cancel := context.WithTimeout(ctx, timeout)
defer cancel()
for {
err := f(ctx)
if err == nil || ErrIsTerminal(err) {
return err
}
select {
case <-ctx.Done():
return err
case <-time.After(retryTime):
}
retryTime = min(maxTime, time.Duration((rand.Float64()+1)*float64(retryTime)))
}
}