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headless_service.go
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headless_service.go
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/*
Copyright 2018 Pressinfra SRL
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 mysqlcluster
import (
core "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
"github.com/presslabs/controller-util/syncer"
"github.com/presslabs/mysql-operator/pkg/internal/mysqlcluster"
)
// NewHeadlessSVCSyncer returns a service syncer
func NewHeadlessSVCSyncer(c client.Client, scheme *runtime.Scheme, cluster *mysqlcluster.MysqlCluster) syncer.Interface {
obj := &core.Service{
ObjectMeta: metav1.ObjectMeta{
Name: cluster.GetNameForResource(mysqlcluster.HeadlessSVC),
Namespace: cluster.Namespace,
},
}
return syncer.NewObjectSyncer("HeadlessSVC", nil, obj, c, scheme, func(in runtime.Object) error {
out := in.(*core.Service)
// add general labels to this service
out.Labels = map[string]string{
"app.kubernetes.io/name": "mysql",
"app.kubernetes.io/managed-by": "mysql.presslabs.org",
}
out.Labels["mysql.presslabs.org/service-type"] = "namespace-nodes"
out.Spec.ClusterIP = "None"
out.Spec.Selector = labels.Set{
"app.kubernetes.io/name": "mysql",
"app.kubernetes.io/managed-by": "mysql.presslabs.org",
}
// we want to be able to access pods even if the pod is not ready because the operator should update
// the in memory table to mark the pod ready.
out.Spec.PublishNotReadyAddresses = true
if len(out.Spec.Ports) != 2 {
out.Spec.Ports = make([]core.ServicePort, 2)
}
out.Spec.Ports[0].Name = MysqlPortName
out.Spec.Ports[0].Port = MysqlPort
out.Spec.Ports[0].TargetPort = TargetPort
out.Spec.Ports[0].Protocol = core.ProtocolTCP
out.Spec.Ports[1].Name = ExporterPortName
out.Spec.Ports[1].Port = ExporterPort
out.Spec.Ports[1].TargetPort = ExporterTargetPort
out.Spec.Ports[1].Protocol = core.ProtocolTCP
return nil
})
}