/
driver.go
159 lines (136 loc) · 4.74 KB
/
driver.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
/*
Copyright 2019 The Kubernetes 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 driver
import (
"context"
"net"
"strings"
"github.com/container-storage-interface/spec/lib/go/csi"
"google.golang.org/grpc"
"k8s.io/klog/v2"
"github.com/kubernetes-sigs/aws-efs-csi-driver/pkg/cloud"
"github.com/kubernetes-sigs/aws-efs-csi-driver/pkg/util"
)
const (
driverName = "efs.csi.aws.com"
// AgentNotReadyTaintKey contains the key of taints to be removed on driver startup
AgentNotReadyNodeTaintKey = "efs.csi.aws.com/agent-not-ready"
)
type Driver struct {
endpoint string
nodeID string
srv *grpc.Server
mounter Mounter
efsWatchdog Watchdog
cloud cloud.Cloud
nodeCaps []csi.NodeServiceCapability_RPC_Type
volMetricsOptIn bool
volMetricsRefreshPeriod float64
volMetricsFsRateLimit int
volStatter VolStatter
gidAllocator GidAllocator
deleteAccessPointRootDir bool
tags map[string]string
}
func NewDriver(endpoint, efsUtilsCfgPath, efsUtilsStaticFilesPath, tags string, volMetricsOptIn bool, volMetricsRefreshPeriod float64, volMetricsFsRateLimit int, deleteAccessPointRootDir bool) *Driver {
cloud, err := cloud.NewCloud()
if err != nil {
klog.Fatalln(err)
}
nodeCaps := SetNodeCapOptInFeatures(volMetricsOptIn)
watchdog := newExecWatchdog(efsUtilsCfgPath, efsUtilsStaticFilesPath, "amazon-efs-mount-watchdog")
return &Driver{
endpoint: endpoint,
nodeID: cloud.GetMetadata().GetInstanceID(),
mounter: newNodeMounter(),
efsWatchdog: watchdog,
cloud: cloud,
nodeCaps: nodeCaps,
volStatter: NewVolStatter(),
volMetricsOptIn: volMetricsOptIn,
volMetricsRefreshPeriod: volMetricsRefreshPeriod,
volMetricsFsRateLimit: volMetricsFsRateLimit,
gidAllocator: NewGidAllocator(),
deleteAccessPointRootDir: deleteAccessPointRootDir,
tags: parseTagsFromStr(strings.TrimSpace(tags)),
}
}
func SetNodeCapOptInFeatures(volMetricsOptIn bool) []csi.NodeServiceCapability_RPC_Type {
var nCaps = []csi.NodeServiceCapability_RPC_Type{}
if volMetricsOptIn {
klog.V(4).Infof("Enabling Node Service capability for Get Volume Stats")
nCaps = append(nCaps, csi.NodeServiceCapability_RPC_GET_VOLUME_STATS)
} else {
klog.V(4).Infof("Node Service capability for Get Volume Stats Not enabled")
}
return nCaps
}
func (d *Driver) Run() error {
scheme, addr, err := util.ParseEndpoint(d.endpoint)
if err != nil {
return err
}
listener, err := net.Listen(scheme, addr)
if err != nil {
return err
}
logErr := func(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (interface{}, error) {
resp, err := handler(ctx, req)
if err != nil {
klog.Errorf("GRPC error: %v", err)
}
return resp, err
}
opts := []grpc.ServerOption{
grpc.UnaryInterceptor(logErr),
}
d.srv = grpc.NewServer(opts...)
csi.RegisterIdentityServer(d.srv, d)
klog.Info("Registering Node Server")
csi.RegisterNodeServer(d.srv, d)
klog.Info("Registering Controller Server")
csi.RegisterControllerServer(d.srv, d)
klog.Info("Starting efs-utils watchdog")
if err := d.efsWatchdog.start(); err != nil {
return err
}
reaper := newReaper()
klog.Info("Starting reaper")
reaper.start()
// Remove taint from node to indicate driver startup success
// This is done at the last possible moment to prevent race conditions or false positive removals
err = removeNotReadyTaint(cloud.DefaultKubernetesAPIClient)
if err != nil {
klog.ErrorS(err, "Unexpected failure when attempting to remove node taint(s)")
}
klog.Infof("Listening for connections on address: %#v", listener.Addr())
return d.srv.Serve(listener)
}
func parseTagsFromStr(tagStr string) map[string]string {
defer func() {
if r := recover(); r != nil {
klog.Errorf("Failed to parse input tag string: %v", tagStr)
}
}()
m := make(map[string]string)
if tagStr == "" {
klog.Infof("Did not find any input tags.")
return m
}
tagsSplit := strings.Split(tagStr, " ")
for _, pair := range tagsSplit {
p := strings.Split(pair, ":")
m[p[0]] = p[1]
}
return m
}