mirror of https://github.com/k3s-io/k3s
82 lines
3.2 KiB
Go
82 lines
3.2 KiB
Go
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/*
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Copyright 2019 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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endpointsliceconfig "k8s.io/kubernetes/pkg/controller/endpointslice/config"
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)
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const (
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minConcurrentServiceEndpointSyncs = 1
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maxConcurrentServiceEndpointSyncs = 50
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minMaxEndpointsPerSlice = 1
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maxMaxEndpointsPerSlice = 1000
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)
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// EndpointSliceControllerOptions holds the EndpointSliceController options.
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type EndpointSliceControllerOptions struct {
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*endpointsliceconfig.EndpointSliceControllerConfiguration
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}
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// AddFlags adds flags related to EndpointSliceController for controller manager to the specified FlagSet.
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func (o *EndpointSliceControllerOptions) 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.ConcurrentServiceEndpointSyncs, "concurrent-service-endpoint-syncs", o.ConcurrentServiceEndpointSyncs, "The number of service endpoint syncing operations that will be done concurrently. Larger number = faster endpoint slice updating, but more CPU (and network) load. Defaults to 5.")
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fs.Int32Var(&o.MaxEndpointsPerSlice, "max-endpoints-per-slice", o.MaxEndpointsPerSlice, "The maximum number of endpoints that will be added to an EndpointSlice. More endpoints per slice will result in less endpoint slices, but larger resources. Defaults to 100.")
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}
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// ApplyTo fills up EndpointSliceController config with options.
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func (o *EndpointSliceControllerOptions) ApplyTo(cfg *endpointsliceconfig.EndpointSliceControllerConfiguration) error {
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if o == nil {
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return nil
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}
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cfg.ConcurrentServiceEndpointSyncs = o.ConcurrentServiceEndpointSyncs
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cfg.MaxEndpointsPerSlice = o.MaxEndpointsPerSlice
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return nil
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}
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// Validate checks validation of EndpointSliceControllerOptions.
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func (o *EndpointSliceControllerOptions) 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.ConcurrentServiceEndpointSyncs < minConcurrentServiceEndpointSyncs {
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errs = append(errs, fmt.Errorf("concurrent-service-endpoint-syncs must not be less than %d, but got %d", minConcurrentServiceEndpointSyncs, o.ConcurrentServiceEndpointSyncs))
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} else if o.ConcurrentServiceEndpointSyncs > maxConcurrentServiceEndpointSyncs {
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errs = append(errs, fmt.Errorf("concurrent-service-endpoint-syncs must not be more than %d, but got %d", maxConcurrentServiceEndpointSyncs, o.ConcurrentServiceEndpointSyncs))
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}
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if o.MaxEndpointsPerSlice < minMaxEndpointsPerSlice {
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errs = append(errs, fmt.Errorf("max-endpoints-per-slice must not be less than %d, but got %d", minMaxEndpointsPerSlice, o.MaxEndpointsPerSlice))
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} else if o.MaxEndpointsPerSlice > maxMaxEndpointsPerSlice {
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errs = append(errs, fmt.Errorf("max-endpoints-per-slice must not be more than %d, but got %d", maxMaxEndpointsPerSlice, o.MaxEndpointsPerSlice))
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}
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return errs
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}
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