mirror of
https://github.com/gravitational/teleport.git
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62 lines
2.4 KiB
Go
62 lines
2.4 KiB
Go
/*
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* Teleport
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* Copyright (C) 2023 Gravitational, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package utils
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import (
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"time"
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"github.com/gravitational/teleport/api/utils/retryutils"
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)
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// HalfJitter is a global jitter instance used for one-off jitters.
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// Prefer instantiating a new jitter instance for operations that require
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// repeated calls, and use a dedicated sharded jitter instance for
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// any usecases that might scale with cluster size or request count.
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var HalfJitter = retryutils.NewHalfJitter()
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// SeventhJitter is a global jitter instance used for one-off jitters.
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// Prefer instantiating a new jitter instance for operations that require
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// repeated calls, and use a dedicated sharded jitter instance for
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// any usecases that might scale with cluster size or request count.
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var SeventhJitter = retryutils.NewSeventhJitter()
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// FullJitter is a global jitter instance used for one-off jitters.
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// Prefer instantiating a new jitter instance for operations that require
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// repeated calls, and use a dedicated sharded jitter instance for
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// any usecases that might scale with cluster size or request count.
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var FullJitter = retryutils.NewFullJitter()
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// NewDefaultLinear creates a linear retry with reasonable default parameters for
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// attempting to restart "critical but potentially load-inducing" operations, such
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// as watcher or control stream resume. Exact parameters are subject to change,
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// but this retry will always be configured for automatic reset.
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func NewDefaultLinear() *retryutils.Linear {
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retry, err := retryutils.NewLinear(retryutils.LinearConfig{
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First: FullJitter(time.Second * 10),
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Step: time.Second * 15,
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Max: time.Second * 90,
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Jitter: retryutils.NewHalfJitter(),
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AutoReset: 5,
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})
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if err != nil {
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panic("default linear retry misconfigured (this is a bug)")
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}
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return retry
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}
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