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
|
package weed_server
import (
"context"
"fmt"
"github.com/chrislusf/seaweedfs/weed/shell"
"github.com/chrislusf/seaweedfs/weed/wdclient"
"google.golang.org/grpc"
"net/http"
"net/http/httputil"
"net/url"
"os"
"regexp"
"strconv"
"strings"
"sync"
"time"
"github.com/chrislusf/raft"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
"github.com/chrislusf/seaweedfs/weed/security"
"github.com/chrislusf/seaweedfs/weed/sequence"
"github.com/chrislusf/seaweedfs/weed/topology"
"github.com/chrislusf/seaweedfs/weed/util"
"github.com/gorilla/mux"
"github.com/spf13/viper"
)
type MasterOption struct {
Port int
MetaFolder string
VolumeSizeLimitMB uint
VolumePreallocate bool
PulseSeconds int
DefaultReplicaPlacement string
GarbageThreshold float64
WhiteList []string
DisableHttp bool
MetricsAddress string
MetricsIntervalSec int
}
type MasterServer struct {
option *MasterOption
guard *security.Guard
preallocateSize int64
Topo *topology.Topology
vg *topology.VolumeGrowth
vgLock sync.Mutex
bounedLeaderChan chan int
// notifying clients
clientChansLock sync.RWMutex
clientChans map[string]chan *master_pb.VolumeLocation
grpcDialOpiton grpc.DialOption
MasterClient *wdclient.MasterClient
}
func NewMasterServer(r *mux.Router, option *MasterOption, peers []string) *MasterServer {
v := viper.GetViper()
signingKey := v.GetString("jwt.signing.key")
v.SetDefault("jwt.signing.expires_after_seconds", 10)
expiresAfterSec := v.GetInt("jwt.signing.expires_after_seconds")
readSigningKey := v.GetString("jwt.signing.read.key")
v.SetDefault("jwt.signing.read.expires_after_seconds", 60)
readExpiresAfterSec := v.GetInt("jwt.signing.read.expires_after_seconds")
var preallocateSize int64
if option.VolumePreallocate {
preallocateSize = int64(option.VolumeSizeLimitMB) * (1 << 20)
}
grpcDialOption := security.LoadClientTLS(v.Sub("grpc"), "master")
ms := &MasterServer{
option: option,
preallocateSize: preallocateSize,
clientChans: make(map[string]chan *master_pb.VolumeLocation),
grpcDialOpiton: grpcDialOption,
MasterClient: wdclient.NewMasterClient(context.Background(), grpcDialOption, "master", peers),
}
ms.bounedLeaderChan = make(chan int, 16)
seq := sequence.NewMemorySequencer()
ms.Topo = topology.NewTopology("topo", seq, uint64(ms.option.VolumeSizeLimitMB)*1024*1024, ms.option.PulseSeconds)
ms.vg = topology.NewDefaultVolumeGrowth()
glog.V(0).Infoln("Volume Size Limit is", ms.option.VolumeSizeLimitMB, "MB")
ms.guard = security.NewGuard(ms.option.WhiteList, signingKey, expiresAfterSec, readSigningKey, readExpiresAfterSec)
if !ms.option.DisableHttp {
handleStaticResources2(r)
r.HandleFunc("/", ms.proxyToLeader(ms.uiStatusHandler))
r.HandleFunc("/ui/index.html", ms.uiStatusHandler)
r.HandleFunc("/dir/assign", ms.proxyToLeader(ms.guard.WhiteList(ms.dirAssignHandler)))
r.HandleFunc("/dir/lookup", ms.guard.WhiteList(ms.dirLookupHandler))
r.HandleFunc("/dir/status", ms.proxyToLeader(ms.guard.WhiteList(ms.dirStatusHandler)))
r.HandleFunc("/col/delete", ms.proxyToLeader(ms.guard.WhiteList(ms.collectionDeleteHandler)))
r.HandleFunc("/vol/grow", ms.proxyToLeader(ms.guard.WhiteList(ms.volumeGrowHandler)))
r.HandleFunc("/vol/status", ms.proxyToLeader(ms.guard.WhiteList(ms.volumeStatusHandler)))
r.HandleFunc("/vol/vacuum", ms.proxyToLeader(ms.guard.WhiteList(ms.volumeVacuumHandler)))
r.HandleFunc("/submit", ms.guard.WhiteList(ms.submitFromMasterServerHandler))
r.HandleFunc("/stats/health", ms.guard.WhiteList(statsHealthHandler))
r.HandleFunc("/stats/counter", ms.guard.WhiteList(statsCounterHandler))
r.HandleFunc("/stats/memory", ms.guard.WhiteList(statsMemoryHandler))
r.HandleFunc("/{fileId}", ms.redirectHandler)
}
ms.Topo.StartRefreshWritableVolumes(ms.grpcDialOpiton, ms.option.GarbageThreshold, ms.preallocateSize)
ms.startAdminScripts()
return ms
}
func (ms *MasterServer) SetRaftServer(raftServer *RaftServer) {
ms.Topo.RaftServer = raftServer.raftServer
ms.Topo.RaftServer.AddEventListener(raft.LeaderChangeEventType, func(e raft.Event) {
glog.V(0).Infof("event: %+v", e)
if ms.Topo.RaftServer.Leader() != "" {
glog.V(0).Infoln("[", ms.Topo.RaftServer.Name(), "]", ms.Topo.RaftServer.Leader(), "becomes leader.")
}
})
ms.Topo.RaftServer.AddEventListener(raft.StateChangeEventType, func(e raft.Event) {
glog.V(0).Infof("state change: %+v", e)
})
if ms.Topo.IsLeader() {
glog.V(0).Infoln("[", ms.Topo.RaftServer.Name(), "]", "I am the leader!")
} else {
if ms.Topo.RaftServer.Leader() != "" {
glog.V(0).Infoln("[", ms.Topo.RaftServer.Name(), "]", ms.Topo.RaftServer.Leader(), "is the leader.")
}
}
}
func (ms *MasterServer) proxyToLeader(f func(w http.ResponseWriter, r *http.Request)) func(w http.ResponseWriter, r *http.Request) {
return func(w http.ResponseWriter, r *http.Request) {
if ms.Topo.IsLeader() {
f(w, r)
} else if ms.Topo.RaftServer != nil && ms.Topo.RaftServer.Leader() != "" {
ms.bounedLeaderChan <- 1
defer func() { <-ms.bounedLeaderChan }()
targetUrl, err := url.Parse("http://" + ms.Topo.RaftServer.Leader())
if err != nil {
writeJsonError(w, r, http.StatusInternalServerError,
fmt.Errorf("Leader URL http://%s Parse Error: %v", ms.Topo.RaftServer.Leader(), err))
return
}
glog.V(4).Infoln("proxying to leader", ms.Topo.RaftServer.Leader())
proxy := httputil.NewSingleHostReverseProxy(targetUrl)
director := proxy.Director
proxy.Director = func(req *http.Request) {
actualHost, err := security.GetActualRemoteHost(req)
if err == nil {
req.Header.Set("HTTP_X_FORWARDED_FOR", actualHost)
}
director(req)
}
proxy.Transport = util.Transport
proxy.ServeHTTP(w, r)
} else {
//drop it to the floor
//writeJsonError(w, r, errors.New(ms.Topo.RaftServer.Name()+" does not know Leader yet:"+ms.Topo.RaftServer.Leader()))
}
}
}
func (ms *MasterServer) startAdminScripts() {
v := viper.GetViper()
adminScripts := v.GetString("master.maintenance.scripts")
v.SetDefault("master.maintenance.sleep_minutes", 17)
sleepMinutes := v.GetInt("master.maintenance.sleep_minutes")
glog.V(0).Infof("adminScripts:\n%v", adminScripts)
if adminScripts == "" {
return
}
scriptLines := strings.Split(adminScripts, "\n")
masterAddress := "localhost:" + strconv.Itoa(ms.option.Port)
var shellOptions shell.ShellOptions
shellOptions.GrpcDialOption = security.LoadClientTLS(viper.Sub("grpc"), "master")
shellOptions.Masters = &masterAddress
shellOptions.FilerHost = "localhost"
shellOptions.FilerPort = 8888
shellOptions.Directory = "/"
commandEnv := shell.NewCommandEnv(shellOptions)
reg, _ := regexp.Compile(`'.*?'|".*?"|\S+`)
go commandEnv.MasterClient.KeepConnectedToMaster()
go func() {
commandEnv.MasterClient.WaitUntilConnected()
c := time.Tick(time.Duration(sleepMinutes) * time.Minute)
for _ = range c {
if ms.Topo.IsLeader() {
for _, line := range scriptLines {
cmds := reg.FindAllString(line, -1)
if len(cmds) == 0 {
continue
}
args := make([]string, len(cmds[1:]))
for i := range args {
args[i] = strings.Trim(string(cmds[1+i]), "\"'")
}
cmd := strings.ToLower(cmds[0])
for _, c := range shell.Commands {
if c.Name() == cmd {
glog.V(0).Infof("executing: %s %v", cmd, args)
if err := c.Do(args, commandEnv, os.Stdout); err != nil {
glog.V(0).Infof("error: %v", err)
}
}
}
}
}
}
}()
}
|
