forked from gardener/gardener
/
istiod.go
94 lines (81 loc) · 2.63 KB
/
istiod.go
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// Copyright (c) 2020 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// 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 istio
import (
"context"
"path/filepath"
"github.com/gardener/gardener/pkg/client/kubernetes"
"github.com/gardener/gardener/pkg/operation/botanist/component"
corev1 "k8s.io/api/core/v1"
apierrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
crclient "sigs.k8s.io/controller-runtime/pkg/client"
)
type istiod struct {
namespace string
values *IstiodValues
kubernetes.ChartApplier
chartPath string
client crclient.Client
}
// IstiodValues holds values for the istio-istiod chart.
type IstiodValues struct {
TrustDomain string `json:"trustDomain,omitempty"`
Image string `json:"image,omitempty"`
}
// NewIstiod can be used to deploy istio's istiod in a namespace.
// Destroy does nothing.
func NewIstiod(
values *IstiodValues,
namespace string,
applier kubernetes.ChartApplier,
chartsRootPath string,
client crclient.Client,
) component.DeployWaiter {
return &istiod{
values: values,
namespace: namespace,
ChartApplier: applier,
chartPath: filepath.Join(chartsRootPath, istioReleaseName, "istio-istiod"),
client: client,
}
}
func (i *istiod) Deploy(ctx context.Context) error {
if err := i.client.Create(
ctx,
&corev1.Namespace{
ObjectMeta: metav1.ObjectMeta{
Name: i.namespace,
Labels: map[string]string{
"istio-operator-managed": "Reconcile",
"istio-injection": "disabled",
},
},
},
); err != nil && !apierrors.IsAlreadyExists(err) {
return err
}
applierOptions := kubernetes.CopyApplierOptions(kubernetes.DefaultMergeFuncs)
return i.Apply(ctx, i.chartPath, i.namespace, istioReleaseName, kubernetes.Values(i.values), applierOptions)
}
func (i *istiod) Destroy(ctx context.Context) error {
// istio cannot be safely removed
return nil
}
func (i *istiod) Wait(ctx context.Context) error {
return nil
}
func (i *istiod) WaitCleanup(ctx context.Context) error {
return nil
}