forked from projectcontour/contour
/
cachehandler.go
113 lines (98 loc) · 3.4 KB
/
cachehandler.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
// Copyright © 2018 Heptio
// 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 contour contains the translation business logic that listens
// to Kubernetes ResourceEventHandler events and translates those into
// additions/deletions in caches connected to the Envoy xDS gRPC API server.
package contour
import (
"github.com/heptio/contour/internal/dag"
"github.com/heptio/contour/internal/k8s"
"github.com/heptio/contour/internal/metrics"
"github.com/prometheus/client_golang/prometheus"
"github.com/sirupsen/logrus"
)
// CacheHandler manages the state of xDS caches.
type CacheHandler struct {
ListenerVisitorConfig
ListenerCache
RouteCache
ClusterCache
IngressRouteStatus *k8s.IngressRouteStatus
logrus.FieldLogger
*metrics.Metrics
}
type statusable interface {
Statuses() []dag.Status
}
func (ch *CacheHandler) OnChange(b *dag.Builder) {
timer := prometheus.NewTimer(ch.CacheHandlerOnUpdateSummary)
defer timer.ObserveDuration()
dag := b.Build()
ch.setIngressRouteStatus(dag)
ch.updateListeners(dag)
ch.updateRoutes(dag)
ch.updateClusters(dag)
ch.updateIngressRouteMetric(dag)
}
func (ch *CacheHandler) setIngressRouteStatus(st statusable) {
for _, s := range st.Statuses() {
err := ch.IngressRouteStatus.SetStatus(s.Status, s.Description, s.Object)
if err != nil {
ch.Errorf("Error Setting Status of IngressRoute: ", err)
}
}
}
func (ch *CacheHandler) updateListeners(root dag.Visitable) {
listeners := visitListeners(root, &ch.ListenerVisitorConfig)
ch.ListenerCache.Update(listeners)
}
func (ch *CacheHandler) updateRoutes(root dag.Visitable) {
routes := visitRoutes(root)
ch.RouteCache.Update(routes)
}
func (ch *CacheHandler) updateClusters(root dag.Visitable) {
clusters := visitClusters(root)
ch.ClusterCache.Update(clusters)
}
func (ch *CacheHandler) updateIngressRouteMetric(st statusable) {
metrics := calculateIngressRouteMetric(st)
ch.Metrics.SetIngressRouteMetric(metrics)
}
func calculateIngressRouteMetric(st statusable) metrics.IngressRouteMetric {
metricTotal := make(map[metrics.Meta]int)
metricValid := make(map[metrics.Meta]int)
metricInvalid := make(map[metrics.Meta]int)
metricOrphaned := make(map[metrics.Meta]int)
metricRoots := make(map[metrics.Meta]int)
for _, v := range st.Statuses() {
switch v.Status {
case dag.StatusValid:
metricValid[metrics.Meta{VHost: v.Vhost, Namespace: v.Object.GetNamespace()}]++
case dag.StatusInvalid:
metricInvalid[metrics.Meta{VHost: v.Vhost, Namespace: v.Object.GetNamespace()}]++
case dag.StatusOrphaned:
metricOrphaned[metrics.Meta{Namespace: v.Object.GetNamespace()}]++
}
metricTotal[metrics.Meta{Namespace: v.Object.GetNamespace()}]++
if v.Object.Spec.VirtualHost != nil {
metricRoots[metrics.Meta{Namespace: v.Object.GetNamespace()}]++
}
}
return metrics.IngressRouteMetric{
Invalid: metricInvalid,
Valid: metricValid,
Orphaned: metricOrphaned,
Total: metricTotal,
Root: metricRoots,
}
}