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Shard count based rate limiting (#4923)
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101 changes: 101 additions & 0 deletions
101
service/history/shard/ownership_based_quota_calculator.go
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| // The MIT License | ||
| // | ||
| // Copyright (c) 2020 Temporal Technologies Inc. All rights reserved. | ||
| // | ||
| // Copyright (c) 2020 Uber Technologies, Inc. | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| // of this software and associated documentation files (the "Software"), to deal | ||
| // in the Software without restriction, including without limitation the rights | ||
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| // copies of the Software, and to permit persons to whom the Software is | ||
| // furnished to do so, subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in | ||
| // all copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | ||
| // THE SOFTWARE. | ||
|
|
||
| package shard | ||
|
|
||
| import ( | ||
| "go.temporal.io/server/common/quotas" | ||
| ) | ||
|
|
||
| type ( | ||
| OwnershipAwareQuotaCalculator struct { | ||
| quotas.ClusterAwareQuotaCalculator | ||
|
|
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| scaler OwnershipBasedQuotaScaler | ||
| } | ||
|
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| OwnershipAwareNamespaceQuotaCalculator struct { | ||
| quotas.ClusterAwareNamespaceSpecificQuotaCalculator | ||
|
|
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| scaler OwnershipBasedQuotaScaler | ||
| } | ||
| ) | ||
|
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| func NewOwnershipAwareQuotaCalculator( | ||
| scaler OwnershipBasedQuotaScaler, | ||
| memberCounter quotas.MemberCounter, | ||
| perInstanceQuota func() int, | ||
| globalQuota func() int, | ||
| ) *OwnershipAwareQuotaCalculator { | ||
| return &OwnershipAwareQuotaCalculator{ | ||
| ClusterAwareQuotaCalculator: quotas.ClusterAwareQuotaCalculator{ | ||
| MemberCounter: memberCounter, | ||
| PerInstanceQuota: perInstanceQuota, | ||
| GlobalQuota: globalQuota, | ||
| }, | ||
| scaler: scaler, | ||
| } | ||
| } | ||
|
|
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| func (c *OwnershipAwareQuotaCalculator) GetQuota() float64 { | ||
| if quota, ok := getOwnershipScaledQuota(c.scaler, c.GlobalQuota()); ok { | ||
| return quota | ||
| } | ||
| return c.ClusterAwareQuotaCalculator.GetQuota() | ||
| } | ||
|
|
||
| func NewOwnershipAwareNamespaceQuotaCalculator( | ||
| scaler OwnershipBasedQuotaScaler, | ||
| memberCounter quotas.MemberCounter, | ||
| perInstanceQuota func(namespace string) int, | ||
| globalQuota func(namespace string) int, | ||
| ) *OwnershipAwareNamespaceQuotaCalculator { | ||
| return &OwnershipAwareNamespaceQuotaCalculator{ | ||
| ClusterAwareNamespaceSpecificQuotaCalculator: quotas.ClusterAwareNamespaceSpecificQuotaCalculator{ | ||
| MemberCounter: memberCounter, | ||
| PerInstanceQuota: perInstanceQuota, | ||
| GlobalQuota: globalQuota, | ||
| }, | ||
| scaler: scaler, | ||
| } | ||
| } | ||
|
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| func (c *OwnershipAwareNamespaceQuotaCalculator) GetQuota(namespace string) float64 { | ||
| if quota, ok := getOwnershipScaledQuota(c.scaler, c.GlobalQuota(namespace)); ok { | ||
| return quota | ||
| } | ||
| return c.ClusterAwareNamespaceSpecificQuotaCalculator.GetQuota(namespace) | ||
| } | ||
|
|
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| func getOwnershipScaledQuota( | ||
| scaler OwnershipBasedQuotaScaler, | ||
| globalLimit int, | ||
| ) (float64, bool) { | ||
| if globalLimit > 0 && scaler != nil { | ||
| if scaleFactor, ok := scaler.ScaleFactor(); ok { | ||
| return scaleFactor * float64(globalLimit), true | ||
| } | ||
| } | ||
| return 0, false | ||
| } |
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