88 lines
4.5 KiB
Go
88 lines
4.5 KiB
Go
/*
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Copyright 2020 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package options
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import (
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"fmt"
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"github.com/spf13/pflag"
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"k8s.io/kubernetes/cmd/kube-controller-manager/names"
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endpointslicemirroringconfig "k8s.io/kubernetes/pkg/controller/endpointslicemirroring/config"
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)
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const (
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mirroringMinConcurrentServiceEndpointSyncs = 1
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mirroringMaxConcurrentServiceEndpointSyncs = 50
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mirroringMinMaxEndpointsPerSubset = 1
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mirroringMaxMaxEndpointsPerSubset = 1000
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)
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// EndpointSliceMirroringControllerOptions holds the
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// EndpointSliceMirroringController options.
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type EndpointSliceMirroringControllerOptions struct {
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*endpointslicemirroringconfig.EndpointSliceMirroringControllerConfiguration
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}
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// AddFlags adds flags related to EndpointSliceMirroringController for
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// controller manager to the specified FlagSet.
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func (o *EndpointSliceMirroringControllerOptions) AddFlags(fs *pflag.FlagSet) {
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if o == nil {
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return
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}
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fs.Int32Var(&o.MirroringConcurrentServiceEndpointSyncs, "mirroring-concurrent-service-endpoint-syncs", o.MirroringConcurrentServiceEndpointSyncs, fmt.Sprintf("The number of service endpoint syncing operations that will be done concurrently by the %s. Larger number = faster endpoint slice updating, but more CPU (and network) load. Defaults to 5.", names.EndpointSliceMirroringController))
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fs.Int32Var(&o.MirroringMaxEndpointsPerSubset, "mirroring-max-endpoints-per-subset", o.MirroringMaxEndpointsPerSubset, fmt.Sprintf("The maximum number of endpoints that will be added to an EndpointSlice by the %s. More endpoints per slice will result in less endpoint slices, but larger resources. Defaults to 100.", names.EndpointSliceMirroringController))
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fs.DurationVar(&o.MirroringEndpointUpdatesBatchPeriod.Duration, "mirroring-endpointslice-updates-batch-period", o.MirroringEndpointUpdatesBatchPeriod.Duration, fmt.Sprintf("The length of EndpointSlice updates batching period for %s. Processing of EndpointSlice changes will be delayed by this duration to join them with potential upcoming updates and reduce the overall number of EndpointSlice updates. Larger number = higher endpoint programming latency, but lower number of endpoints revision generated", names.EndpointSliceMirroringController))
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}
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// ApplyTo fills up EndpointSliceMirroringController config with options.
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func (o *EndpointSliceMirroringControllerOptions) ApplyTo(cfg *endpointslicemirroringconfig.EndpointSliceMirroringControllerConfiguration) error {
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if o == nil {
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return nil
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}
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cfg.MirroringConcurrentServiceEndpointSyncs = o.MirroringConcurrentServiceEndpointSyncs
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cfg.MirroringMaxEndpointsPerSubset = o.MirroringMaxEndpointsPerSubset
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cfg.MirroringEndpointUpdatesBatchPeriod = o.MirroringEndpointUpdatesBatchPeriod
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return nil
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}
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// Validate checks validation of EndpointSliceMirroringControllerOptions.
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func (o *EndpointSliceMirroringControllerOptions) Validate() []error {
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if o == nil {
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return nil
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}
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errs := []error{}
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if o.MirroringConcurrentServiceEndpointSyncs < mirroringMinConcurrentServiceEndpointSyncs {
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errs = append(errs, fmt.Errorf("mirroring-concurrent-service-endpoint-syncs must not be less than %d, but got %d", mirroringMinConcurrentServiceEndpointSyncs, o.MirroringConcurrentServiceEndpointSyncs))
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} else if o.MirroringConcurrentServiceEndpointSyncs > mirroringMaxConcurrentServiceEndpointSyncs {
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errs = append(errs, fmt.Errorf("mirroring-concurrent-service-endpoint-syncs must not be more than %d, but got %d", mirroringMaxConcurrentServiceEndpointSyncs, o.MirroringConcurrentServiceEndpointSyncs))
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}
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if o.MirroringMaxEndpointsPerSubset < mirroringMinMaxEndpointsPerSubset {
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errs = append(errs, fmt.Errorf("mirroring-max-endpoints-per-subset must not be less than %d, but got %d", mirroringMinMaxEndpointsPerSubset, o.MirroringMaxEndpointsPerSubset))
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} else if o.MirroringMaxEndpointsPerSubset > mirroringMaxMaxEndpointsPerSubset {
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errs = append(errs, fmt.Errorf("mirroring-max-endpoints-per-subset must not be more than %d, but got %d", mirroringMaxMaxEndpointsPerSubset, o.MirroringMaxEndpointsPerSubset))
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}
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return errs
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}
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