/
worker.go
207 lines (190 loc) · 6.96 KB
/
worker.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
// Copyright 2017 Canonical Ltd.
// Licensed under the AGPLv3, see LICENCE file for details.
package apiserver
import (
"context"
"fmt"
"net/http"
"github.com/juju/clock"
"github.com/juju/errors"
"github.com/juju/pubsub/v2"
"github.com/juju/worker/v3"
"github.com/juju/juju/agent"
"github.com/juju/juju/apiserver"
"github.com/juju/juju/apiserver/apiserverhttp"
"github.com/juju/juju/apiserver/authentication/jwt"
"github.com/juju/juju/apiserver/authentication/macaroon"
jujucontroller "github.com/juju/juju/controller"
"github.com/juju/juju/core/auditlog"
"github.com/juju/juju/core/cache"
coredatabase "github.com/juju/juju/core/database"
"github.com/juju/juju/core/lease"
"github.com/juju/juju/core/multiwatcher"
"github.com/juju/juju/core/presence"
"github.com/juju/juju/state"
"github.com/juju/juju/worker/syslogger"
)
// Config is the configuration required for running an API server worker.
type Config struct {
AgentConfig agent.Config
Clock clock.Clock
Hub *pubsub.StructuredHub
Presence presence.Recorder
Mux *apiserverhttp.Mux
MultiwatcherFactory multiwatcher.Factory
LocalMacaroonAuthenticator macaroon.LocalMacaroonAuthenticator
StatePool *state.StatePool
Controller *cache.Controller
LeaseManager lease.Manager
SysLogger syslogger.SysLogger
RegisterIntrospectionHTTPHandlers func(func(path string, _ http.Handler))
UpgradeComplete func() bool
GetAuditConfig func() auditlog.Config
NewServer NewServerFunc
MetricsCollector *apiserver.Collector
EmbeddedCommand apiserver.ExecEmbeddedCommandFunc
CharmhubHTTPClient HTTPClient
// DBGetter supplies sql.DB references on request, for named databases.
DBGetter coredatabase.DBGetter
}
type HTTPClient interface {
Do(*http.Request) (*http.Response, error)
}
// NewServerFunc is the type of function that will be used
// by the worker to create a new API server.
type NewServerFunc func(apiserver.ServerConfig) (worker.Worker, error)
// Validate validates the API server configuration.
func (config Config) Validate() error {
if config.AgentConfig == nil {
return errors.NotValidf("nil AgentConfig")
}
if config.Clock == nil {
return errors.NotValidf("nil Clock")
}
if config.Hub == nil {
return errors.NotValidf("nil Hub")
}
if config.Presence == nil {
return errors.NotValidf("nil Presence")
}
if config.StatePool == nil {
return errors.NotValidf("nil StatePool")
}
if config.Controller == nil {
return errors.NotValidf("nil Controller")
}
if config.Mux == nil {
return errors.NotValidf("nil Mux")
}
if config.MultiwatcherFactory == nil {
return errors.NotValidf("nil MultiwatcherFactory")
}
if config.LocalMacaroonAuthenticator == nil {
return errors.NotValidf("nil LocalMacaroonAuthenticator")
}
if config.LeaseManager == nil {
return errors.NotValidf("nil LeaseManager")
}
if config.RegisterIntrospectionHTTPHandlers == nil {
return errors.NotValidf("nil RegisterIntrospectionHTTPHandlers")
}
if config.SysLogger == nil {
return errors.NotValidf("nil SysLogger")
}
if config.UpgradeComplete == nil {
return errors.NotValidf("nil UpgradeComplete")
}
if config.NewServer == nil {
return errors.NotValidf("nil NewServer")
}
if config.MetricsCollector == nil {
return errors.NotValidf("nil MetricsCollector")
}
if config.CharmhubHTTPClient == nil {
return errors.NotValidf("nil CharmhubHTTPClient")
}
if config.DBGetter == nil {
return errors.NotValidf("nil DBGetter")
}
return nil
}
// NewWorker returns a new API server worker, with the given configuration.
func NewWorker(config Config) (worker.Worker, error) {
if err := config.Validate(); err != nil {
return nil, errors.Trace(err)
}
logSinkConfig, err := getLogSinkConfig(config.AgentConfig)
if err != nil {
return nil, errors.Annotate(err, "getting log sink config")
}
systemState, err := config.StatePool.SystemState()
if err != nil {
return nil, errors.Trace(err)
}
controllerConfig, err := systemState.ControllerConfig()
if err != nil {
return nil, errors.Annotate(err, "cannot fetch the controller config")
}
observerFactory, err := newObserverFn(
config.AgentConfig,
controllerConfig,
config.Clock,
config.Hub,
config.MetricsCollector,
)
if err != nil {
return nil, errors.Annotate(err, "cannot create RPC observer factory")
}
jwtAuthenticator, err := gatherJWTAuthenticator(controllerConfig)
if err != nil {
return nil, fmt.Errorf("gathering authenticators for apiserver: %w", err)
}
serverConfig := apiserver.ServerConfig{
StatePool: config.StatePool,
Controller: config.Controller,
Clock: config.Clock,
Tag: config.AgentConfig.Tag(),
DataDir: config.AgentConfig.DataDir(),
LogDir: config.AgentConfig.LogDir(),
Hub: config.Hub,
Presence: config.Presence,
MultiwatcherFactory: config.MultiwatcherFactory,
Mux: config.Mux,
LocalMacaroonAuthenticator: config.LocalMacaroonAuthenticator,
JWTAuthenticator: jwtAuthenticator,
UpgradeComplete: config.UpgradeComplete,
PublicDNSName: controllerConfig.AutocertDNSName(),
AllowModelAccess: controllerConfig.AllowModelAccess(),
NewObserver: observerFactory,
RegisterIntrospectionHandlers: config.RegisterIntrospectionHTTPHandlers,
MetricsCollector: config.MetricsCollector,
LogSinkConfig: &logSinkConfig,
GetAuditConfig: config.GetAuditConfig,
LeaseManager: config.LeaseManager,
ExecEmbeddedCommand: config.EmbeddedCommand,
SysLogger: config.SysLogger,
CharmhubHTTPClient: config.CharmhubHTTPClient,
DBGetter: config.DBGetter,
}
return config.NewServer(serverConfig)
}
// gatherJWTAuthenticator is responsible for building up the jwt authenticator
// if this controller has been provisioned to trust external jwt tokens.
func gatherJWTAuthenticator(controllerConfig jujucontroller.Config) (jwt.Authenticator, error) {
jwtRefreshURL := controllerConfig.LoginTokenRefreshURL()
if jwtRefreshURL == "" {
return nil, nil
}
jwtAuthenticator := jwt.NewAuthenticator(jwtRefreshURL)
if err := jwtAuthenticator.RegisterJWKSCache(context.Background()); err != nil {
return nil, err
}
return jwtAuthenticator, nil
}
func newServerShim(config apiserver.ServerConfig) (worker.Worker, error) {
return apiserver.NewServer(config)
}
// NewMetricsCollector returns a new apiserver collector
func NewMetricsCollector() *apiserver.Collector {
return apiserver.NewMetricsCollector()
}