-
Notifications
You must be signed in to change notification settings - Fork 134
/
main.go
243 lines (211 loc) · 8.45 KB
/
main.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
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
/*
Copyright 2022 The Flux authors
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 main
import (
"fmt"
"os"
"time"
"github.com/sethvargo/go-limiter/memorystore"
prommetrics "github.com/slok/go-http-metrics/metrics/prometheus"
"github.com/slok/go-http-metrics/middleware"
flag "github.com/spf13/pflag"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/runtime"
clientgoscheme "k8s.io/client-go/kubernetes/scheme"
_ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
"k8s.io/utils/pointer"
ctrl "sigs.k8s.io/controller-runtime"
ctrlcache "sigs.k8s.io/controller-runtime/pkg/cache"
ctrlclient "sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/config"
crtlmetrics "sigs.k8s.io/controller-runtime/pkg/metrics"
metricsserver "sigs.k8s.io/controller-runtime/pkg/metrics/server"
"github.com/fluxcd/pkg/runtime/acl"
"github.com/fluxcd/pkg/runtime/client"
helper "github.com/fluxcd/pkg/runtime/controller"
feathelper "github.com/fluxcd/pkg/runtime/features"
"github.com/fluxcd/pkg/runtime/leaderelection"
"github.com/fluxcd/pkg/runtime/logger"
"github.com/fluxcd/pkg/runtime/metrics"
"github.com/fluxcd/pkg/runtime/pprof"
"github.com/fluxcd/pkg/runtime/probes"
apiv1 "github.com/fluxcd/notification-controller/api/v1"
apiv1b2 "github.com/fluxcd/notification-controller/api/v1beta2"
apiv1b3 "github.com/fluxcd/notification-controller/api/v1beta3"
"github.com/fluxcd/notification-controller/internal/controller"
"github.com/fluxcd/notification-controller/internal/features"
"github.com/fluxcd/notification-controller/internal/server"
// +kubebuilder:scaffold:imports
)
const controllerName = "notification-controller"
var (
scheme = runtime.NewScheme()
setupLog = ctrl.Log.WithName("setup")
)
func init() {
_ = clientgoscheme.AddToScheme(scheme)
_ = apiv1.AddToScheme(scheme)
_ = apiv1b2.AddToScheme(scheme)
_ = apiv1b3.AddToScheme(scheme)
// +kubebuilder:scaffold:scheme
}
func main() {
var (
eventsAddr string
receiverAddr string
healthAddr string
metricsAddr string
concurrent int
watchAllNamespaces bool
rateLimitInterval time.Duration
clientOptions client.Options
logOptions logger.Options
leaderElectionOptions leaderelection.Options
aclOptions acl.Options
rateLimiterOptions helper.RateLimiterOptions
featureGates feathelper.FeatureGates
exportHTTPPathMetrics bool
)
flag.StringVar(&metricsAddr, "metrics-addr", ":8080", "The address the metric endpoint binds to.")
flag.StringVar(&eventsAddr, "events-addr", ":9090", "The address the event endpoint binds to.")
flag.StringVar(&healthAddr, "health-addr", ":9440", "The address the health endpoint binds to.")
flag.StringVar(&receiverAddr, "receiverAddr", ":9292", "The address the webhook receiver endpoint binds to.")
flag.IntVar(&concurrent, "concurrent", 4, "The number of concurrent notification reconciles.")
flag.BoolVar(&watchAllNamespaces, "watch-all-namespaces", true,
"Watch for custom resources in all namespaces, if set to false it will only watch the runtime namespace.")
flag.DurationVar(&rateLimitInterval, "rate-limit-interval", 5*time.Minute, "Interval in which rate limit has effect.")
flag.BoolVar(&exportHTTPPathMetrics, "export-http-path-metrics", false, "When enabled, the requests full path is included in the HTTP server metrics (risk as high cardinality")
clientOptions.BindFlags(flag.CommandLine)
logOptions.BindFlags(flag.CommandLine)
leaderElectionOptions.BindFlags(flag.CommandLine)
aclOptions.BindFlags(flag.CommandLine)
rateLimiterOptions.BindFlags(flag.CommandLine)
featureGates.BindFlags(flag.CommandLine)
flag.Parse()
logger.SetLogger(logger.NewLogger(logOptions))
if err := featureGates.WithLogger(setupLog).SupportedFeatures(features.FeatureGates()); err != nil {
setupLog.Error(err, "unable to load feature gates")
os.Exit(1)
}
watchNamespace := ""
if !watchAllNamespaces {
watchNamespace = os.Getenv("RUNTIME_NAMESPACE")
}
var disableCacheFor []ctrlclient.Object
shouldCache, err := features.Enabled(features.CacheSecretsAndConfigMaps)
if err != nil {
setupLog.Error(err, "unable to check feature gate "+features.CacheSecretsAndConfigMaps)
os.Exit(1)
}
if !shouldCache {
disableCacheFor = append(disableCacheFor, &corev1.Secret{}, &corev1.ConfigMap{})
}
restConfig := client.GetConfigOrDie(clientOptions)
mgrConfig := ctrl.Options{
Scheme: scheme,
HealthProbeBindAddress: healthAddr,
LeaderElection: leaderElectionOptions.Enable,
LeaderElectionReleaseOnCancel: leaderElectionOptions.ReleaseOnCancel,
LeaseDuration: &leaderElectionOptions.LeaseDuration,
RenewDeadline: &leaderElectionOptions.RenewDeadline,
RetryPeriod: &leaderElectionOptions.RetryPeriod,
LeaderElectionID: fmt.Sprintf("%s-leader-election", controllerName),
Logger: ctrl.Log,
Controller: config.Controller{
RecoverPanic: pointer.Bool(true),
MaxConcurrentReconciles: concurrent,
},
Client: ctrlclient.Options{
Cache: &ctrlclient.CacheOptions{
DisableFor: disableCacheFor,
},
},
Metrics: metricsserver.Options{
BindAddress: metricsAddr,
ExtraHandlers: pprof.GetHandlers(),
},
}
if watchNamespace != "" {
mgrConfig.Cache = ctrlcache.Options{
DefaultNamespaces: map[string]ctrlcache.Config{
watchNamespace: ctrlcache.Config{},
},
}
}
mgr, err := ctrl.NewManager(restConfig, mgrConfig)
if err != nil {
setupLog.Error(err, "unable to start manager")
os.Exit(1)
}
probes.SetupChecks(mgr, setupLog)
metricsH := helper.NewMetrics(mgr, metrics.MustMakeRecorder(), apiv1.NotificationFinalizer)
if err = (&controller.ProviderReconciler{
Client: mgr.GetClient(),
ControllerName: controllerName,
EventRecorder: mgr.GetEventRecorderFor(controllerName),
}).SetupWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create controller", "controller", "Provider")
os.Exit(1)
}
if err = (&controller.AlertReconciler{
Client: mgr.GetClient(),
ControllerName: controllerName,
EventRecorder: mgr.GetEventRecorderFor(controllerName),
}).SetupWithManager(mgr); err != nil {
setupLog.Error(err, "unable to create controller", "controller", "Alert")
os.Exit(1)
}
if err = (&controller.ReceiverReconciler{
Client: mgr.GetClient(),
ControllerName: controllerName,
Metrics: metricsH,
EventRecorder: mgr.GetEventRecorderFor(controllerName),
}).SetupWithManagerAndOptions(mgr, controller.ReceiverReconcilerOptions{
RateLimiter: helper.GetRateLimiter(rateLimiterOptions),
}); err != nil {
setupLog.Error(err, "unable to create controller", "controller", "Receiver")
os.Exit(1)
}
// +kubebuilder:scaffold:builder
ctx := ctrl.SetupSignalHandler()
store, err := memorystore.New(&memorystore.Config{
Interval: rateLimitInterval,
})
if err != nil {
setupLog.Error(err, "unable to create middleware store")
os.Exit(1)
}
setupLog.Info("starting event server", "addr", eventsAddr)
eventMdlw := middleware.New(middleware.Config{
Recorder: prommetrics.NewRecorder(prommetrics.Config{
Prefix: "gotk_event",
Registry: crtlmetrics.Registry,
}),
})
eventServer := server.NewEventServer(eventsAddr, ctrl.Log, mgr.GetClient(), mgr.GetEventRecorderFor(controllerName), aclOptions.NoCrossNamespaceRefs, exportHTTPPathMetrics)
go eventServer.ListenAndServe(ctx.Done(), eventMdlw, store)
setupLog.Info("starting webhook receiver server", "addr", receiverAddr)
receiverServer := server.NewReceiverServer(receiverAddr, ctrl.Log, mgr.GetClient(), exportHTTPPathMetrics)
receiverMdlw := middleware.New(middleware.Config{
Recorder: prommetrics.NewRecorder(prommetrics.Config{
Prefix: "gotk_receiver",
Registry: crtlmetrics.Registry,
}),
})
go receiverServer.ListenAndServe(ctx.Done(), receiverMdlw)
setupLog.Info("starting manager")
if err := mgr.Start(ctx); err != nil {
setupLog.Error(err, "problem running manager")
os.Exit(1)
}
}