/
dnsentry.go
142 lines (120 loc) · 4.6 KB
/
dnsentry.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
// 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 dns
import (
"context"
"fmt"
"path/filepath"
"time"
dnsv1alpha1 "github.com/gardener/external-dns-management/pkg/apis/dns/v1alpha1"
gardencorev1beta1helper "github.com/gardener/gardener/pkg/apis/core/v1beta1/helper"
"github.com/gardener/gardener/pkg/client/kubernetes"
"github.com/gardener/gardener/pkg/operation/botanist/component"
kutil "github.com/gardener/gardener/pkg/utils/kubernetes"
"github.com/gardener/gardener/pkg/utils/retry"
"github.com/sirupsen/logrus"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"sigs.k8s.io/controller-runtime/pkg/client"
crclient "sigs.k8s.io/controller-runtime/pkg/client"
)
// EntryValues contains the values used to create a DNSEntry
type EntryValues struct {
Name string `json:"name,omitempty"`
DNSName string `json:"dnsName,omitempty"`
Targets []string `json:"targets,omitempty"`
OwnerID string `json:"ownerID,omitempty"`
}
// NewDNSEntry creates a new instance of DeployWaiter for a specific DNS entry.
// <waiter> is optional and it's defaulted to github.com/gardener/gardener/pkg/utils/retry.DefaultOps()
func NewDNSEntry(
values *EntryValues,
shootNamespace string,
applier kubernetes.ChartApplier,
chartsRootPath string,
logger *logrus.Entry,
client crclient.Client,
waiter retry.Ops,
) component.DeployWaiter {
if waiter == nil {
waiter = retry.DefaultOps()
}
return &dnsEntry{
ChartApplier: applier,
chartPath: filepath.Join(chartsRootPath, "seed-dns", "entry"),
client: client,
logger: logger,
shootNamespace: shootNamespace,
values: values,
waiter: waiter,
}
}
type dnsEntry struct {
values *EntryValues
shootNamespace string
kubernetes.ChartApplier
chartPath string
logger *logrus.Entry
client crclient.Client
waiter retry.Ops
}
func (d *dnsEntry) Deploy(ctx context.Context) error {
return d.Apply(ctx, d.chartPath, d.shootNamespace, d.values.Name, kubernetes.Values(d.values))
}
func (d *dnsEntry) Destroy(ctx context.Context) error {
return client.IgnoreNotFound(d.client.Delete(ctx, d.entry()))
}
func (d *dnsEntry) Wait(ctx context.Context) error {
var (
status string
message string
retryCountUntilSevere int
interval = 5 * time.Second
severeThreshold = 15 * time.Second
timeout = 2 * time.Minute
)
if err := d.waiter.UntilTimeout(ctx, interval, timeout, func(ctx context.Context) (done bool, err error) {
retryCountUntilSevere++
entry := &dnsv1alpha1.DNSEntry{}
if err := d.client.Get(
ctx,
crclient.ObjectKey{Name: d.values.Name, Namespace: d.shootNamespace},
entry,
); err != nil {
return retry.SevereError(err)
}
if entry.Status.ObservedGeneration == entry.Generation && entry.Status.State == dnsv1alpha1.STATE_READY {
return retry.Ok()
}
status = entry.Status.State
if msg := entry.Status.Message; msg != nil {
message = *msg
}
entryErr := fmt.Errorf("DNS record %q is not ready (status=%s, message=%s)", d.values.Name, status, message)
d.logger.Infof("Waiting for %q DNS record to be ready... (status=%s, message=%s)", d.values.Name, status, message)
if status == dnsv1alpha1.STATE_ERROR || status == dnsv1alpha1.STATE_INVALID {
return retry.MinorOrSevereError(retryCountUntilSevere, int(severeThreshold.Nanoseconds()/interval.Nanoseconds()), entryErr)
}
return retry.MinorError(entryErr)
}); err != nil {
return gardencorev1beta1helper.DetermineError(err, fmt.Sprintf("Failed to create %q DNS record: %q (status=%s, message=%s)", d.values.Name, err.Error(), status, message))
}
return nil
}
func (d *dnsEntry) WaitCleanup(ctx context.Context) error {
return kutil.WaitUntilResourceDeleted(ctx, d.client, d.entry(), 5*time.Second)
}
// entry returns an empty DNSEntry used for deletion.
func (d *dnsEntry) entry() *dnsv1alpha1.DNSEntry {
return &dnsv1alpha1.DNSEntry{ObjectMeta: metav1.ObjectMeta{Name: d.values.Name, Namespace: d.shootNamespace}}
}