/
controllers.go
48 lines (42 loc) · 1.54 KB
/
controllers.go
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// Copyright 2018 Authors of Cilium
//
// 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 groups
import (
"context"
cilium_v2 "github.com/cilium/cilium/pkg/k8s/apis/cilium.io/v2"
)
const (
maxConcurrentUpdates = 4
)
// UpdateCNPInformation retrieves all the CNP that has currently a derivative
// policy and creates the new derivatives policies with the latest information
// from providers. To avoid issues with rate-limiting this function will
// execute the addDerivative function with a max number of concurrent calls,
// defined on maxConcurrentUpdates.
func UpdateCNPInformation() {
cnpToUpdate := groupsCNPCache.GetAllCNP()
sem := make(chan bool, maxConcurrentUpdates)
for _, cnp := range cnpToUpdate {
sem <- true
go func(cnp *cilium_v2.CiliumNetworkPolicy) {
defer func() { <-sem }()
// We use the saame cache for Clusterwide and Namespaced cilium policies
if cnp.ObjectMeta.Namespace == "" {
addDerivativePolicy(context.TODO(), cnp, true)
} else {
addDerivativePolicy(context.TODO(), cnp, false)
}
}(cnp)
}
}