60 lines
2.1 KiB
Go
60 lines
2.1 KiB
Go
// Copyright (c) 2026 Probo Inc <hello@getprobo.com>.
|
|
//
|
|
// Permission to use, copy, modify, and/or distribute this software for any
|
|
// purpose with or without fee is hereby granted, provided that the above
|
|
// copyright notice and this permission notice appear in all copies.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
|
|
// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
|
|
// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
|
|
// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
|
|
// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
|
|
// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
|
|
// PERFORMANCE OF THIS SOFTWARE.
|
|
|
|
package scim
|
|
|
|
import "time"
|
|
|
|
const (
|
|
// DefaultMaxConsecutiveFailures is the maximum number of consecutive failures
|
|
// before a bridge is disabled.
|
|
DefaultMaxConsecutiveFailures = 10
|
|
|
|
// DefaultMaxBackoff is the maximum backoff duration between retries.
|
|
DefaultMaxBackoff = 24 * time.Hour
|
|
|
|
// DefaultStaleSyncThreshold is the time after which a SYNCING bridge is
|
|
// considered stale and can be recovered by another runner.
|
|
DefaultStaleSyncThreshold = 10 * time.Minute
|
|
)
|
|
|
|
func (r *BridgeRunner) calculateBackoff(consecutiveFailures int) time.Duration {
|
|
if consecutiveFailures <= 0 {
|
|
return r.cfg.Interval
|
|
}
|
|
|
|
// Cap the shift exponent to prevent integer overflow from the shift itself.
|
|
// Bit 63 is the sign bit, so shifting by 63+ produces negative or zero values.
|
|
const maxShift = 62
|
|
shiftAmount := min(consecutiveFailures, maxShift)
|
|
|
|
backoff := r.cfg.Interval * time.Duration(1<<shiftAmount)
|
|
|
|
// Detect multiplication overflow: if result is non-positive or less than the
|
|
// base interval, overflow occurred. Return MaxBackoff in this case.
|
|
if backoff <= 0 || backoff < r.cfg.Interval {
|
|
return r.cfg.MaxBackoff
|
|
}
|
|
|
|
if backoff > r.cfg.MaxBackoff {
|
|
return r.cfg.MaxBackoff
|
|
}
|
|
|
|
return backoff
|
|
}
|
|
|
|
func (r *BridgeRunner) shouldDisable(consecutiveFailures int) bool {
|
|
return consecutiveFailures >= r.cfg.MaxConsecutiveFailures
|
|
}
|