-
Notifications
You must be signed in to change notification settings - Fork 103
/
metaserver.go
112 lines (94 loc) · 3.38 KB
/
metaserver.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
/*
Copyright 2022 The Katalyst 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 metaserver is the package that contains those implementations to
// obtain metadata in the specific node, any other component wants to get
// those data should import this package rather than get directly.
package metaserver // import "github.com/kubewharf/katalyst-core/pkg/metaserver"
import (
"context"
"fmt"
"os"
"sync"
"github.com/kubewharf/katalyst-core/pkg/client"
pkgconfig "github.com/kubewharf/katalyst-core/pkg/config"
"github.com/kubewharf/katalyst-core/pkg/metaserver/agent"
"github.com/kubewharf/katalyst-core/pkg/metaserver/external"
"github.com/kubewharf/katalyst-core/pkg/metaserver/kcc"
"github.com/kubewharf/katalyst-core/pkg/metaserver/spd"
"github.com/kubewharf/katalyst-core/pkg/metrics"
)
// MetaServer is used to fetch metadata that other components may need to obtain,
// such as. dynamic configurations, pods or nodes running in agent, metrics info and so on.
type MetaServer struct {
start bool
sync.Mutex
*agent.MetaAgent
kcc.ConfigurationManager
spd.ServiceProfilingManager
external.ExternalManager
}
// NewMetaServer returns the instance of MetaServer.
func NewMetaServer(clientSet *client.GenericClientSet, emitter metrics.MetricEmitter, conf *pkgconfig.Configuration) (*MetaServer, error) {
metaAgent, err := agent.NewMetaAgent(conf, clientSet, emitter)
if err != nil {
return nil, err
}
// make sure meta server checkpoint directory already exist
err = os.MkdirAll(conf.CheckpointManagerDir, os.FileMode(0o755))
if err != nil {
return nil, fmt.Errorf("initializes meta server checkpoint dir failed: %s", err)
}
var configurationManager kcc.ConfigurationManager
if !conf.ConfigDisableDynamic {
configurationManager, err = kcc.NewDynamicConfigManager(clientSet, emitter,
metaAgent.CNCFetcher, conf)
if err != nil {
return nil, err
}
} else {
configurationManager = &kcc.DummyConfigurationManager{}
}
spdFetcher, err := spd.NewSPDFetcher(clientSet, emitter, metaAgent.CNCFetcher, conf)
if err != nil {
return nil, fmt.Errorf("initializes spd fetcher failed: %s", err)
}
return &MetaServer{
MetaAgent: metaAgent,
ConfigurationManager: configurationManager,
ServiceProfilingManager: spd.NewServiceProfilingManager(spdFetcher),
ExternalManager: external.InitExternalManager(metaAgent.PodFetcher),
}, nil
}
func (m *MetaServer) Run(ctx context.Context) {
m.Lock()
if m.start {
m.Unlock()
return
}
m.start = true
go m.MetaAgent.Run(ctx)
go m.ConfigurationManager.Run(ctx)
go m.ServiceProfilingManager.Run(ctx)
go m.ExternalManager.Run(ctx)
m.Unlock()
<-ctx.Done()
}
func (m *MetaServer) SetServiceProfilingManager(manager spd.ServiceProfilingManager) error {
m.Lock()
defer m.Unlock()
if m.start {
return fmt.Errorf("meta agent has already started, not allowed to set implementations")
}
m.ServiceProfilingManager = manager
return nil
}