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
|
package broker
import (
"context"
"github.com/seaweedfs/seaweedfs/weed/filer_client"
"github.com/seaweedfs/seaweedfs/weed/util/log"
"github.com/seaweedfs/seaweedfs/weed/mq/pub_balancer"
"github.com/seaweedfs/seaweedfs/weed/mq/sub_coordinator"
"github.com/seaweedfs/seaweedfs/weed/mq/topic"
"sync"
"time"
"github.com/seaweedfs/seaweedfs/weed/cluster"
"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
"github.com/seaweedfs/seaweedfs/weed/wdclient"
"google.golang.org/grpc"
"github.com/seaweedfs/seaweedfs/weed/pb"
"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
"github.com/seaweedfs/seaweedfs/weed/pb/master_pb"
)
type MessageQueueBrokerOption struct {
Masters map[string]pb.ServerAddress
FilerGroup string
DataCenter string
Rack string
DefaultReplication string
MaxMB int
Ip string
Port int
Cipher bool
VolumeServerAccess string // how to access volume servers
}
func (option *MessageQueueBrokerOption) BrokerAddress() pb.ServerAddress {
return pb.NewServerAddress(option.Ip, option.Port, 0)
}
type MessageQueueBroker struct {
mq_pb.UnimplementedSeaweedMessagingServer
option *MessageQueueBrokerOption
grpcDialOption grpc.DialOption
MasterClient *wdclient.MasterClient
filers map[pb.ServerAddress]struct{}
currentFiler pb.ServerAddress
localTopicManager *topic.LocalTopicManager
PubBalancer *pub_balancer.PubBalancer
lockAsBalancer *cluster.LiveLock
SubCoordinator *sub_coordinator.SubCoordinator
accessLock sync.Mutex
fca *filer_client.FilerClientAccessor
}
func NewMessageBroker(option *MessageQueueBrokerOption, grpcDialOption grpc.DialOption) (mqBroker *MessageQueueBroker, err error) {
pubBalancer := pub_balancer.NewPubBalancer()
subCoordinator := sub_coordinator.NewSubCoordinator()
mqBroker = &MessageQueueBroker{
option: option,
grpcDialOption: grpcDialOption,
MasterClient: wdclient.NewMasterClient(grpcDialOption, option.FilerGroup, cluster.BrokerType, option.BrokerAddress(), option.DataCenter, option.Rack, *pb.NewServiceDiscoveryFromMap(option.Masters)),
filers: make(map[pb.ServerAddress]struct{}),
localTopicManager: topic.NewLocalTopicManager(),
PubBalancer: pubBalancer,
SubCoordinator: subCoordinator,
}
fca := &filer_client.FilerClientAccessor{
GetFiler: mqBroker.GetFiler,
GetGrpcDialOption: mqBroker.GetGrpcDialOption,
}
mqBroker.fca = fca
subCoordinator.FilerClientAccessor = fca
mqBroker.MasterClient.SetOnPeerUpdateFn(mqBroker.OnBrokerUpdate)
pubBalancer.OnPartitionChange = mqBroker.SubCoordinator.OnPartitionChange
go mqBroker.MasterClient.KeepConnectedToMaster(context.Background())
existingNodes := cluster.ListExistingPeerUpdates(mqBroker.MasterClient.GetMaster(context.Background()), grpcDialOption, option.FilerGroup, cluster.FilerType)
for _, newNode := range existingNodes {
mqBroker.OnBrokerUpdate(newNode, time.Now())
}
// keep connecting to balancer
go func() {
for mqBroker.currentFiler == "" {
time.Sleep(time.Millisecond * 237)
}
self := option.BrokerAddress()
log.V(3).Infof("broker %s found filer %s", self, mqBroker.currentFiler)
newBrokerBalancerCh := make(chan string, 1)
lockClient := cluster.NewLockClient(grpcDialOption, mqBroker.currentFiler)
mqBroker.lockAsBalancer = lockClient.StartLongLivedLock(pub_balancer.LockBrokerBalancer, string(self), func(newLockOwner string) {
log.V(3).Infof("broker %s found balanacer %s", self, newLockOwner)
newBrokerBalancerCh <- newLockOwner
})
mqBroker.KeepConnectedToBrokerBalancer(newBrokerBalancerCh)
}()
return mqBroker, nil
}
func (b *MessageQueueBroker) OnBrokerUpdate(update *master_pb.ClusterNodeUpdate, startFrom time.Time) {
if update.NodeType != cluster.FilerType {
return
}
address := pb.ServerAddress(update.Address)
if update.IsAdd {
b.filers[address] = struct{}{}
if b.currentFiler == "" {
b.currentFiler = address
}
} else {
delete(b.filers, address)
if b.currentFiler == address {
for filer := range b.filers {
b.currentFiler = filer
break
}
}
}
}
func (b *MessageQueueBroker) GetGrpcDialOption() grpc.DialOption {
return b.grpcDialOption
}
func (b *MessageQueueBroker) GetFiler() pb.ServerAddress {
return b.currentFiler
}
func (b *MessageQueueBroker) WithFilerClient(streamingMode bool, fn func(filer_pb.SeaweedFilerClient) error) error {
return pb.WithFilerClient(streamingMode, 0, b.GetFiler(), b.grpcDialOption, fn)
}
func (b *MessageQueueBroker) AdjustedUrl(location *filer_pb.Location) string {
return location.Url
}
func (b *MessageQueueBroker) GetDataCenter() string {
return ""
}
func (b *MessageQueueBroker) withMasterClient(streamingMode bool, master pb.ServerAddress, fn func(client master_pb.SeaweedClient) error) error {
return pb.WithMasterClient(streamingMode, master, b.grpcDialOption, false, func(client master_pb.SeaweedClient) error {
return fn(client)
})
}
func (b *MessageQueueBroker) withBrokerClient(streamingMode bool, server pb.ServerAddress, fn func(client mq_pb.SeaweedMessagingClient) error) error {
return pb.WithBrokerGrpcClient(streamingMode, server.String(), b.grpcDialOption, func(client mq_pb.SeaweedMessagingClient) error {
return fn(client)
})
}
|
