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controller.go
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controller.go
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/*
Copyright 2018 The Knative Authors
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
https://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 config
import (
"errors"
"strings"
corev1 "k8s.io/api/core/v1"
)
const (
ControllerConfigName = "config-controller"
queueSidecarImageKey = "queueSidecarImage"
autoscalerImageKey = "autoscalerImage"
registriesSkippingTagResolving = "registriesSkippingTagResolving"
)
// NewControllerConfigFromMap creates a Controller from the supplied Map
func NewControllerConfigFromMap(configMap map[string]string) (*Controller, error) {
nc := &Controller{}
if qsideCarImage, ok := configMap[queueSidecarImageKey]; !ok {
return nil, errors.New("Queue sidecar image is missing")
} else {
nc.QueueSidecarImage = qsideCarImage
}
if autoScalerImage, ok := configMap[autoscalerImageKey]; ok {
nc.AutoscalerImage = autoScalerImage
}
// If autoscaler image is not set then Single-tenant autoscaler deployments enabled
if registries, ok := configMap[registriesSkippingTagResolving]; !ok {
// It is ok if registries are missing
nc.RegistriesSkippingTagResolving = make(map[string]struct{})
} else {
nc.RegistriesSkippingTagResolving = toStringSet(registries, ",")
}
return nc, nil
}
// NewControllerConfigFromConfigMap creates a Controller from the supplied configMap
func NewControllerConfigFromConfigMap(config *corev1.ConfigMap) (*Controller, error) {
return NewControllerConfigFromMap(config.Data)
}
func toStringSet(arg, delimiter string) map[string]struct{} {
keys := strings.Split(arg, delimiter)
set := make(map[string]struct{}, len(keys))
for _, key := range keys {
set[key] = struct{}{}
}
return set
}
// Controller includes the configurations for the controller.
type Controller struct {
// AutoscalerImage is the name of the image used for the autoscaler pod.
AutoscalerImage string
// QueueSidecarImage is the name of the image used for the queue sidecar
// injected into the revision pod
QueueSidecarImage string
// Repositories for which tag to digest resolving should be skipped
RegistriesSkippingTagResolving map[string]struct{}
}