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swagent_webhook.go
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swagent_webhook.go
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// Licensed to Apache Software Foundation (ASF) under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. Apache Software Foundation (ASF) licenses this file to you 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 v1alpha1
import (
"k8s.io/apimachinery/pkg/runtime"
ctrl "sigs.k8s.io/controller-runtime"
logf "sigs.k8s.io/controller-runtime/pkg/log"
"sigs.k8s.io/controller-runtime/pkg/webhook"
"sigs.k8s.io/controller-runtime/pkg/webhook/admission"
)
// log is for logging in this package.
var swagentlog = logf.Log.WithName("swagent-resource")
func (r *SwAgent) SetupWebhookWithManager(mgr ctrl.Manager) error {
return ctrl.NewWebhookManagedBy(mgr).
For(r).
Complete()
}
// nolint: lll
//+kubebuilder:webhook:path=/mutate-operator-skywalking-apache-org-v1alpha1-swagent,mutating=true,failurePolicy=fail,sideEffects=None,groups=operator.skywalking.apache.org,resources=swagents,verbs=create;update,versions=v1alpha1,name=mswagent.kb.io,admissionReviewVersions=v1
var _ webhook.Defaulter = &SwAgent{}
// Default implements webhook.Defaulter so a webhook will be registered for the type
func (r *SwAgent) Default() {
swagentlog.Info("default", "name", r.Name)
r.setDefault()
}
// nolint: lll
//+kubebuilder:webhook:path=/validate-operator-skywalking-apache-org-v1alpha1-swagent,mutating=false,failurePolicy=fail,sideEffects=None,groups=operator.skywalking.apache.org,resources=swagents,verbs=create;update,versions=v1alpha1,name=vswagent.kb.io,admissionReviewVersions=v1
var _ webhook.Validator = &SwAgent{}
// ValidateCreate implements webhook.Validator so a webhook will be registered for the type
func (r *SwAgent) ValidateCreate() (admission.Warnings, error) {
swagentlog.Info("validate create", "name", r.Name)
r.setDefault()
return nil, nil
}
// ValidateUpdate implements webhook.Validator so a webhook will be registered for the type
func (r *SwAgent) ValidateUpdate(_ runtime.Object) (admission.Warnings, error) {
swagentlog.Info("validate update", "name", r.Name)
return nil, nil
}
// ValidateDelete implements webhook.Validator so a webhook will be registered for the type
func (r *SwAgent) ValidateDelete() (admission.Warnings, error) {
swagentlog.Info("validate delete", "name", r.Name)
return nil, nil
}
const (
LabelJavaAgent = "swck-java-agent-injected"
)
func (r *SwAgent) setDefault() {
if nil != r {
if len(r.Spec.Selector) == 0 {
if r.Spec.Selector == nil {
r.Spec.Selector = make(map[string]string)
}
r.Spec.Selector[LabelJavaAgent] = "true"
}
if len(r.Spec.ContainerMatcher) == 0 {
r.Spec.ContainerMatcher = ".*"
}
// default values for java sidecar
if len(r.Spec.JavaSidecar.Name) == 0 {
r.Spec.JavaSidecar.Name = "inject-skywalking-agent"
}
if len(r.Spec.JavaSidecar.Image) == 0 {
r.Spec.JavaSidecar.Image = "apache/skywalking-java-agent:8.16.0-java8"
}
if len(r.Spec.JavaSidecar.Command) == 0 {
if r.Spec.JavaSidecar.Command == nil {
r.Spec.JavaSidecar.Command = []string{}
}
r.Spec.JavaSidecar.Command = append(r.Spec.JavaSidecar.Command, "sh")
}
if len(r.Spec.JavaSidecar.Args) == 0 {
if r.Spec.JavaSidecar.Args == nil {
r.Spec.JavaSidecar.Args = []string{}
}
r.Spec.JavaSidecar.Args = append(r.Spec.JavaSidecar.Args, "-c")
r.Spec.JavaSidecar.Args = append(r.Spec.JavaSidecar.Args, "mkdir -p /sky/agent && cp -r /skywalking/agent/* /sky/agent")
}
// default values for shared volume
if len(r.Spec.SharedVolumeName) == 0 {
r.Spec.SharedVolumeName = "sky-agent"
}
}
}