-
Notifications
You must be signed in to change notification settings - Fork 0
/
service_load_balance.go
191 lines (165 loc) · 5.98 KB
/
service_load_balance.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
package dao
import (
"fmt"
"github.com/e421083458/gorm"
"github.com/gin-gonic/gin"
"github.com/yguilai/go-gateway/public"
"github.com/yguilai/go-gateway/reverse_proxy/load_balance"
"net"
"net/http"
"strings"
"sync"
"time"
)
type LoadBalance struct {
ID int64 `json:"id" gorm:"primary_key"`
ServiceID int64 `json:"service_id" gorm:"column:service_id" description:"服务id "`
CheckMethod int `json:"check_method" gorm:"column:check_method" description:"检查方法 tcpchk=检测端口是否握手成功 "`
CheckTimeout int `json:"check_timeout" gorm:"column:check_timeout" description:"check超时时间 "`
CheckInterval int `json:"check_interval" gorm:"column:check_interval" description:"检查间隔, 单位s "`
RoundType int `json:"round_type" gorm:"column:round_type" description:"轮询方式 round/weight_round/random/ip_hash"`
IpList string `json:"ip_list" gorm:"column:ip_list" description:"ip列表"`
WeightList string `json:"weight_list" gorm:"column:weight_list" description:"权重列表"`
ForbidList string `json:"forbid_list" gorm:"column:forbid_list" description:"禁用ip列表"`
UpstreamConnectTimeout int `json:"upstream_connect_timeout" gorm:"column:upstream_connect_timeout" description:"下游建立连接超时, 单位s"`
UpstreamHeaderTimeout int `json:"upstream_header_timeout" gorm:"column:upstream_header_timeout" description:"下游获取header超时, 单位s "`
UpstreamIdleTimeout int `json:"upstream_idle_timeout" gorm:"column:upstream_idle_timeout" description:"下游链接最大空闲时间, 单位s "`
UpstreamMaxIdle int `json:"upstream_max_idle" gorm:"column:upstream_max_idle" description:"下游最大空闲链接数"`
}
func (t *LoadBalance) TableName() string {
return "gateway_service_load_balance"
}
func (t *LoadBalance) Find(c *gin.Context, tx *gorm.DB, rule *LoadBalance) (*LoadBalance, error) {
m := &LoadBalance{}
err := tx.SetCtx(public.GetGinTraceContext(c)).Where(rule).Find(m).Error
return m, err
}
func (t *LoadBalance) Save(c *gin.Context, tx *gorm.DB) error {
if err := tx.SetCtx(public.GetGinTraceContext(c)).Save(t).Error; err != nil {
return err
}
return nil
}
func (t *LoadBalance) GetIPListByModel() []string {
return strings.Split(t.IpList, ",")
}
func (t *LoadBalance) GetWeightListByModel() []string {
return strings.Split(t.WeightList, ",")
}
var LoadBalancerHandler *LoadBalancer
type LoadBalancer struct {
LoadBalanceMap map[string]*LoadBalancerItem
LoadBalanceSlice []*LoadBalancerItem
Locker sync.RWMutex
}
type LoadBalancerItem struct {
LoadBalance load_balance.LoadBalance
ServiceName string
}
func NewLoadBalancer() *LoadBalancer {
return &LoadBalancer{
LoadBalanceMap: map[string]*LoadBalancerItem{},
LoadBalanceSlice: []*LoadBalancerItem{},
Locker: sync.RWMutex{},
}
}
func init() {
LoadBalancerHandler = NewLoadBalancer()
}
func (lbr *LoadBalancer) GetLoadBalancer(service *ServiceDetail) (load_balance.LoadBalance, error) {
for _, lbrItem := range lbr.LoadBalanceSlice {
if lbrItem.ServiceName == service.Info.ServiceName {
return lbrItem.LoadBalance, nil
}
}
schema := "http://"
if service.HTTPRule.NeedHttps == 1 {
schema = "https://"
}
if service.Info.LoadType == public.LoadTypeTCP || service.Info.LoadType == public.LoadTypeGRPC {
schema = ""
}
ipList := service.LoadBalance.GetIPListByModel()
weightList := service.LoadBalance.GetWeightListByModel()
ipConf := map[string]string{}
for ipIndex, ipItem := range ipList {
ipConf[ipItem] = weightList[ipIndex]
}
mConf, err := load_balance.NewLoadBalanceCheckConf(fmt.Sprintf("%s%s", schema, "%s"), ipConf)
if err != nil {
return nil, err
}
lb := load_balance.LoadBanlanceFactorWithConf(load_balance.LbType(service.LoadBalance.RoundType), mConf)
lbItem := &LoadBalancerItem{
LoadBalance: lb,
ServiceName: service.Info.ServiceName,
}
lbr.LoadBalanceSlice = append(lbr.LoadBalanceSlice, lbItem)
lbr.Locker.Lock()
defer lbr.Locker.Unlock()
lbr.LoadBalanceMap[service.Info.ServiceName] = lbItem
return lb, nil
}
var TransportorHandler *Transportor
type Transportor struct {
TransportMap map[string]*TransportItem
TransportSlice []*TransportItem
Locker sync.RWMutex
}
type TransportItem struct {
Trans *http.Transport
ServiceName string
}
func NewTransportor() *Transportor {
return &Transportor{
TransportMap: map[string]*TransportItem{},
TransportSlice: []*TransportItem{},
Locker: sync.RWMutex{},
}
}
func init() {
TransportorHandler = NewTransportor()
}
func (t *Transportor) GetTrans(service *ServiceDetail) (*http.Transport, error) {
for _, transItem := range t.TransportSlice {
if transItem.ServiceName == service.Info.ServiceName {
return transItem.Trans, nil
}
}
//todo 优化点5
if service.LoadBalance.UpstreamConnectTimeout==0{
service.LoadBalance.UpstreamConnectTimeout = 30
}
if service.LoadBalance.UpstreamMaxIdle==0{
service.LoadBalance.UpstreamMaxIdle = 100
}
if service.LoadBalance.UpstreamIdleTimeout==0{
service.LoadBalance.UpstreamIdleTimeout = 90
}
if service.LoadBalance.UpstreamHeaderTimeout==0{
service.LoadBalance.UpstreamHeaderTimeout = 30
}
trans := &http.Transport{
Proxy: http.ProxyFromEnvironment,
DialContext: (&net.Dialer{
Timeout: time.Duration(service.LoadBalance.UpstreamConnectTimeout)*time.Second,
KeepAlive: 30 * time.Second,
DualStack: true,
}).DialContext,
ForceAttemptHTTP2: true,
MaxIdleConns: service.LoadBalance.UpstreamMaxIdle,
IdleConnTimeout: time.Duration(service.LoadBalance.UpstreamIdleTimeout)*time.Second,
TLSHandshakeTimeout: 10 * time.Second,
ResponseHeaderTimeout: time.Duration(service.LoadBalance.UpstreamHeaderTimeout)*time.Second,
}
//save to map and slice
transItem := &TransportItem{
Trans: trans,
ServiceName: service.Info.ServiceName,
}
t.TransportSlice = append(t.TransportSlice, transItem)
t.Locker.Lock()
defer t.Locker.Unlock()
t.TransportMap[service.Info.ServiceName] = transItem
return trans, nil
}