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Add support to configure branch ENI cooldown period via configmap #342
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90b90d3
Add support to configure branch ENI cooldown period via configmap
sushrk 5338739
support configurable branch ENI cooldown period
haouc da40ae9
moving error check out from CM update
haouc 60641d0
Fix logs and remove mutex lock in Get function
sushrk 2f60f7d
Update to go1.21.5
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74 changes: 74 additions & 0 deletions
74
mocks/amazon-vcp-resource-controller-k8s/pkg/provider/branch/cooldown/mock_cooldown.go
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,87 @@ | ||
| // Copyright Amazon.com Inc. or its affiliates. All Rights Reserved. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"). You may | ||
| // not use this file except in compliance with the License. A copy of the | ||
| // License is located at | ||
| // | ||
| // http://aws.amazon.com/apache2.0/ | ||
| // | ||
| // or in the "license" file accompanying this file. This file 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. | ||
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| package cooldown | ||
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| import ( | ||
| "fmt" | ||
| "strconv" | ||
| "sync" | ||
| "time" | ||
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| "github.com/aws/amazon-vpc-resource-controller-k8s/pkg/config" | ||
| "github.com/aws/amazon-vpc-resource-controller-k8s/pkg/k8s" | ||
| "github.com/go-logr/logr" | ||
| ) | ||
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| // Global variable for CoolDownPeriod allows packages to Get and Set the coolDown period | ||
| var coolDown *cooldown | ||
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| type cooldown struct { | ||
| mu sync.RWMutex | ||
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|
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| // CoolDownPeriod is the period to wait before deleting the branch ENI for propagation of ip tables rule for deleted pod | ||
| coolDownPeriod time.Duration | ||
| } | ||
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| type CoolDown interface { | ||
| GetCoolDownPeriod() time.Duration | ||
| SetCoolDownPeriod(time.Duration) | ||
| } | ||
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| const ( | ||
| DefaultCoolDownPeriod = time.Second * 60 | ||
| MinimalCoolDownPeriod = time.Second * 30 | ||
| ) | ||
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| // Initialize coolDown period by setting the value in configmap or to default | ||
| func InitCoolDownPeriod(k8sApi k8s.K8sWrapper, log logr.Logger) { | ||
| coolDown = &cooldown{} | ||
| coolDownPeriod, err := GetVpcCniConfigMapCoolDownPeriodOrDefault(k8sApi, log) | ||
| if err != nil { | ||
| log.Info("setting coolDown period to default", "cool down period", coolDownPeriod) | ||
| } | ||
| coolDown.SetCoolDownPeriod(coolDownPeriod) | ||
| } | ||
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| func GetCoolDown() CoolDown { | ||
| return coolDown | ||
| } | ||
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| func GetVpcCniConfigMapCoolDownPeriodOrDefault(k8sApi k8s.K8sWrapper, log logr.Logger) (time.Duration, error) { | ||
| vpcCniConfigMap, err := k8sApi.GetConfigMap(config.VpcCniConfigMapName, config.KubeSystemNamespace) | ||
| if err == nil && vpcCniConfigMap.Data != nil { | ||
| if val, ok := vpcCniConfigMap.Data[config.BranchENICooldownPeriodKey]; ok { | ||
| coolDownPeriodInt, err := strconv.Atoi(val) | ||
| if err != nil { | ||
| log.Error(err, "failed to parse branch ENI coolDown period", "cool down period", val) | ||
| } else { | ||
| return time.Second * time.Duration(coolDownPeriodInt), nil | ||
| } | ||
| } | ||
| } | ||
| // If configmap not found, or configmap data not found, or error in parsing coolDown period, return default coolDown period and error | ||
| return DefaultCoolDownPeriod, fmt.Errorf("failed to get cool down period:%v", err) | ||
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|
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| } | ||
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| func (c *cooldown) GetCoolDownPeriod() time.Duration { | ||
| if c.coolDownPeriod < 30*time.Second { | ||
| return MinimalCoolDownPeriod | ||
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|
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| } | ||
| return c.coolDownPeriod | ||
| } | ||
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| func (c *cooldown) SetCoolDownPeriod(newCoolDownPeriod time.Duration) { | ||
| c.mu.Lock() | ||
| defer c.mu.Unlock() | ||
| c.coolDownPeriod = newCoolDownPeriod | ||
| } | ||
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Is this defaulted to 30s since if first time get fails what will be the value?