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Commit 87ebb210 by 孙龙
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parent cda8cdd4
Inline Side-by-side
Showing with 255 additions and 43 deletions
proxy/load_balance/config.go
......@@ -30,7 +30,7 @@ var(
func Init(reg registry.Registry) *LoadBalanceEtcdConf{
once.Do(func() {
LoadBalanceConfig = &LoadBalanceEtcdConf{}
rb := LoadBanlanceFactory(LbRandom)
rb := LoadBanlanceFactory(LbWeightRoundRobin)
//添加负载均衡器到配置中
LoadBalanceConfig.Attach(rb)
LoadBalanceConfig.registry = reg
......@@ -76,7 +76,7 @@ func (s *LoadBalanceEtcdConf) GetService(ctx context.Context,name string){
}
node ,err :=s.GetLoadBalance().Get(name)
fmt.Println(node)
fmt.Println(node,err)
//for _, node := range service.Nodes {
// fmt.Printf("服务名:%s, 节点：:%#v\n", service.Name, node)
//}
......
proxy/load_balance/consistent_hash.go
......@@ -2,8 +2,10 @@ package load_balance
import (
"errors"
"fmt"
"github.com/syyongx/php2go"
"hash/crc32"
"net"
"sort"
"strconv"
"sync"
......@@ -28,6 +30,7 @@ func (s UInt32Slice) Swap(i, j int) {
type ConsistentHashBanlance struct {
mux sync.RWMutex
hash Hash
lock sync.Mutex
replicas int //复制因子
keys map[string]UInt32Slice //已排序的节点hash切片
hashMap map[string]map[uint32]string //节点哈希和Key的map,键是hash值，值是节点key
......@@ -69,7 +72,6 @@ func (c *ConsistentHashBanlance) Add(serviceName string,params ...string) error
for i := 0; i < c.replicas; i++ {
hash := c.hash([]byte(addr+strconv.Itoa(i)))
//c.keys = append(c.keys, hash)
if php2go.InArray(hash,c.keys[serviceName]) == false{
c.keys[serviceName] = append(c.keys[serviceName], hash)
}
......@@ -80,37 +82,136 @@ func (c *ConsistentHashBanlance) Add(serviceName string,params ...string) error
c.hashMap[serviceName][hash] = addr
}
// 对所有虚拟节点的哈希值进行排序，方便之后进行二分查找
//sort.Sort(c.keys[serviceName])
//fmt.Println(c.keys)
//fmt.Println(c.hashMap)
sort.Sort(c.keys[serviceName])
return nil
}
// 获取本机网卡IP
func (c *ConsistentHashBanlance) getLocalIP() (ipv4 string, err error) {
var (
addrs []net.Addr
addr net.Addr
ipNet *net.IPNet // IP地址
isIpNet bool
)
// 获取所有网卡
if addrs, err = net.InterfaceAddrs(); err != nil {
return
}
// 取第一个非lo的网卡IP
for _, addr = range addrs {
// 这个网络地址是IP地址: ipv4, ipv6
if ipNet, isIpNet = addr.(*net.IPNet); isIpNet && !ipNet.IP.IsLoopback() {
// 跳过IPV6
if ipNet.IP.To4() != nil {
ipv4 = ipNet.IP.String() // 192.168.1.1
return
}
}
}
err = errors.New("没有找到网卡IP")
return
}
// Get 方法根据给定的对象获取最靠近它的那个节点
func (c *ConsistentHashBanlance) Get(key ...string) (string, error) {
if c.IsEmpty() {
return "", errors.New("node is empty")
return "", errors.New(" node is empty")
}
//hash := c.hash([]byte(key[1]))
localIP ,err := c.getLocalIP()
//fmt.Println(localIP)
if err != nil{
localIP = "127.0.0.1"
}
hash := c.hash([]byte(key[1]))
hash := c.hash([]byte(localIP))
if _,ok := c.keys[key[0]];!ok{
serviceName := key[0]
if _,ok := c.keys[serviceName];!ok{
return "", errors.New("node is empty")
}
// 通过二分查找获取最优节点，第一个"服务器hash"值大于"数据hash"值的就是最优"服务器节点"
idx := sort.Search(len(c.keys[key[0]]), func(i int) bool { return c.keys[key[0]][i] >= hash })
idx := sort.Search(len(c.keys[serviceName]), func(i int) bool { return c.keys[serviceName][i] >= hash })
// 如果查找结果 大于 服务器节点哈希数组的最大索引，表示此时该对象哈希值位于最后一个节点之后，那么放入第一个节点中
if idx == len(c.keys[key[0]]) {
if idx == len(c.keys[serviceName]) {
idx = 0
}
c.mux.RLock()
defer c.mux.RUnlock()
return c.hashMap[key[0]][c.keys[key[0]][idx]], nil
return c.hashMap[serviceName][c.keys[serviceName][idx]], nil
}
func (c *ConsistentHashBanlance) Update() {
c.lock.Lock()
defer c.lock.Unlock()
//fmt.Println("更新负载均衡配置.....")
allServiceInfo := LoadBalanceConfig.GetLoadBalanceList()
if allServiceInfo == nil || allServiceInfo.ServiceMap == nil{
return
}
for serviceName,_ := range c.hashMap{
if _,ok := allServiceInfo.ServiceMap[serviceName];!ok{
delete(c.hashMap,serviceName)
delete(c.keys,serviceName)
continue
}
if len(allServiceInfo.ServiceMap[serviceName].Nodes) == 0{
delete(c.hashMap,serviceName)
delete(c.keys,serviceName)
continue
}
//循环etcd中的节点信息
var (
tmpKeys UInt32Slice
tmpHashMap map[uint32]string
)
tmpKeys = make(UInt32Slice,0)
tmpHashMap = make(map[uint32]string,0)
for _,etcdServiceNode := range allServiceInfo.ServiceMap[serviceName].Nodes{
if etcdServiceNode.IP == ""{
continue
}
for i := 0; i < c.replicas; i++ {
var hash uint32
var addr string
if etcdServiceNode.Port == 0 {
addr = etcdServiceNode.IP
}else{
addr = fmt.Sprintf("%s:%s",etcdServiceNode.IP,strconv.Itoa(etcdServiceNode.Port))
}
hash = c.hash([]byte(addr+strconv.Itoa(i)))
tmpKeys = append(tmpKeys, hash)
tmpHashMap[hash] = addr
}
}
c.keys[serviceName] = tmpKeys
c.hashMap[serviceName] = tmpHashMap
sort.Sort(c.keys[serviceName])
}
for _,service := range allServiceInfo.ServiceMap{
serviceName := service.Name
nodes := service.Nodes
for _,node :=range nodes{
if node.IP == ""{
continue
}
if node.Port == 0{
c.Add(serviceName,node.IP)
}else{
c.Add(serviceName,fmt.Sprintf("%s:%s",node.IP,strconv.Itoa(node.Port)))
}
}
}
}
proxy/load_balance/random.go
......@@ -28,8 +28,12 @@ func (r *RandomBalance) Add(serviceName string,params ...string) error {
}
if php2go.InArray(addr,r.rss[serviceName]) == false{
r.rss[serviceName] = append(r.rss[serviceName],addr)
r.curIndex[serviceName] = 0
}
r.curIndex[serviceName] = 0
if r.curIndex[serviceName] > len(r.rss[serviceName]){
r.curIndex[serviceName] = 0
}
return nil
}
......@@ -58,7 +62,11 @@ func (r *RandomBalance) Next(key string) string {
}
func (r *RandomBalance) Get(key ...string) (string, error) {
return r.Next(key[0]), nil
node := r.Next(key[0])
if node == ""{
return "",errors.New("沒找到節點信息")
}
return node, nil
}
......@@ -66,7 +74,7 @@ func (r *RandomBalance) Get(key ...string) (string, error) {
func (r *RandomBalance) Update() {
r.lock.Lock()
defer r.lock.Unlock()
fmt.Println("更新负载均衡配置.....")
//fmt.Println("更新负载均衡配置.....")
allServiceInfo := LoadBalanceConfig.GetLoadBalanceList()
if allServiceInfo == nil || allServiceInfo.ServiceMap == nil{
return
......@@ -92,6 +100,9 @@ func (r *RandomBalance) Update() {
}
}
r.rss[serviceName] = tmpNodes
if r.curIndex[serviceName] > len(r.rss[serviceName]){
r.curIndex[serviceName] = 0
}
}
......
proxy/load_balance/round_robin.go
......@@ -35,6 +35,11 @@ func (r *RoundRobinBalance) Add(serviceName string,params ...string) error {
r.rss[serviceName] = append(r.rss[serviceName],addr)
r.curIndex[serviceName] = 0
}
if r.curIndex[serviceName] > len(r.rss[serviceName]){
r.curIndex[serviceName] = 0
}
return nil
}
......@@ -72,7 +77,11 @@ func (r *RoundRobinBalance) Next(key string) string {
}
func (r *RoundRobinBalance) Get(key ...string) (string, error) {
return r.Next(key[0]), nil
node := r.Next(key[0])
if node == ""{
return "",errors.New("沒找到節點信息")
}
return node, nil
}
/*
......@@ -82,7 +91,7 @@ func (r *RoundRobinBalance) Update() {
r.lock.Lock()
defer r.lock.Unlock()
fmt.Println("更新负载均衡配置.....")
//fmt.Println("更新负载均衡配置.....")
allServiceInfo := LoadBalanceConfig.GetLoadBalanceList()
if allServiceInfo == nil || allServiceInfo.ServiceMap == nil{
return
......@@ -108,6 +117,9 @@ func (r *RoundRobinBalance) Update() {
}
}
r.rss[serviceName] = tmpNodes
if r.curIndex[serviceName] > len(r.rss[serviceName]){
r.curIndex[serviceName] = 0
}
}
for _,service := range allServiceInfo.ServiceMap{
......
proxy/load_balance/weight_round_robin.go
......@@ -2,11 +2,14 @@ package load_balance
import (
"errors"
"fmt"
"strconv"
"sync"
)
type WeightRoundRobinBalance struct {
rss map[string][]*WeightNode
lock sync.Mutex
}
type WeightNode struct {
......@@ -86,18 +89,89 @@ func (r *WeightRoundRobinBalance) Next(key string) string {
}
func (r *WeightRoundRobinBalance) Get(key ...string) (string, error) {
return r.Next(key[0]), nil
node := r.Next(key[0])
if node == ""{
return "",errors.New("沒找到節點信息")
}
return node, nil
}
func (r *WeightRoundRobinBalance) Update() {
//list := Init().GetLoadBalanceList()
//fmt.Println("更新负载均衡配置..start...")
//for _,serviceList := range list.ServiceMap{
// for _,node:=range serviceList.Nodes{
// fmt.Printf("服务名%s，服务列表%s",serviceList.Name,node.IP+":"+strconv.Itoa(node.Port))
// r.Add(serviceList.Name,node.IP+":"+strconv.Itoa(node.Port),strconv.Itoa(node.Weight))
// }
//}
//fmt.Println("更新负载均衡配置..end...")
r.lock.Lock()
defer r.lock.Unlock()
fmt.Println("更新负载均衡配置.....")
allServiceInfo := LoadBalanceConfig.GetLoadBalanceList()
if allServiceInfo == nil || allServiceInfo.ServiceMap == nil{
return
}
//删除不存在的服务节点信息
for serviceName,_ := range r.rss{
if _,ok := allServiceInfo.ServiceMap[serviceName];!ok{
delete(r.rss,serviceName)
continue
}
//循环etcd中的节点信息
var tmpNodes []*WeightNode
tmpNodes = make([]*WeightNode,0)
oldTmpNodes := r.rss[serviceName]
for _,etcdServiceNode := range allServiceInfo.ServiceMap[serviceName].Nodes{
if etcdServiceNode.IP == ""{
continue
}
if etcdServiceNode.Port == 0 {
tmpWeightNode := &WeightNode{
addr:etcdServiceNode.IP,
weight:etcdServiceNode.Weight,
currentWeight:etcdServiceNode.Weight,
effectiveWeight:etcdServiceNode.Weight,
}
for _,v := range oldTmpNodes{
if v.addr == etcdServiceNode.IP{
tmpWeightNode.currentWeight = v.currentWeight
tmpWeightNode.effectiveWeight = v.effectiveWeight
}
}
tmpNodes = append(tmpNodes,tmpWeightNode)
}else{
addr := fmt.Sprintf("%s:%s",etcdServiceNode.IP,strconv.Itoa(etcdServiceNode.Port))
tmpWeightNode := &WeightNode{
addr:addr,
weight:etcdServiceNode.Weight,
currentWeight:etcdServiceNode.Weight,
effectiveWeight:etcdServiceNode.Weight,
}
for _,v := range oldTmpNodes{
if v.addr == tmpWeightNode.addr{
tmpWeightNode.currentWeight = v.currentWeight
tmpWeightNode.effectiveWeight = v.effectiveWeight
}
}
tmpNodes = append(tmpNodes,tmpWeightNode)
}
}
r.rss[serviceName] = tmpNodes
}
for _,service := range allServiceInfo.ServiceMap{
serviceName := service.Name
nodes := service.Nodes
for _,node :=range nodes{
if node.IP == ""{
continue
}
if node.Port == 0{
r.Add(serviceName,node.IP,strconv.Itoa(node.Weight))
}else{
r.Add(serviceName,fmt.Sprintf("%s:%s",node.IP,strconv.Itoa(node.Port)),strconv.Itoa(node.Weight))
}
}
}
}
registry/etcd/etcd.go
......@@ -48,6 +48,7 @@ var (
serviceCh: make(chan *registry.Service, MaxServiceNum),
registryServiceMap: make(map[string]*RegisterService, MaxServiceNum),
}
once sync.Once
)
//导入包立即执行函数
......@@ -292,6 +293,9 @@ func (e *EtcdRegistry) GetService(ctx context.Context, name string) (service *re
//更新当前需要获取的服务列表
allServiceInfoNew.ServiceMap[name] = service
e.value.Store(allServiceInfoNew)
load_balance.LoadBalanceConfig.UpdateConf(allServiceInfoNew)
return
}
......
registry/etcd/etcd_test.go
......@@ -31,11 +31,13 @@ func TestRegister(t *testing.T) {
service.Nodes = append(service.Nodes, &registry.Node{
IP: "127.0.0.1",
Port: 8801,
Weight:2,
},
&registry.Node{
IP: "127.0.0.2",
Port: 8801,
},
//&registry.Node{
// IP: "127.0.0.2",
// Port: 8801,
// Weight:1,
//},
)
registryInst.Register(context.TODO(), service)
......@@ -76,11 +78,13 @@ func TestRegister2(t *testing.T) {
service.Nodes = append(service.Nodes, &registry.Node{
IP: "127.0.0.3",
Port: 8801,
Weight:1,
},
&registry.Node{
IP: "127.0.0.4",
Port: 8801,
},
//&registry.Node{
// IP: "127.0.0.4",
// Port: 8801,
// Weight:2,
//},
)
registryInst.Register(context.TODO(), service)
......@@ -110,10 +114,10 @@ func TestGetService(t *testing.T){
for{
go func() {
loadBalance.GetService(context.TODO(), "comment_service")
loadBalance.GetService(context.TODO(), "comment_service22222")
//loadBalance.GetService(context.TODO(), "comment_service22222")
}()
//time.Sleep(time.Second*1)
time.Sleep(time.Millisecond*10)
time.Sleep(time.Second*1)
//time.Sleep(time.Millisecond*100)
}
}
test/reverseProxy/realServer.go
......@@ -3,6 +3,7 @@ package main
import (
"context"
"fmt"
"github.com/ichunt2019/ichunt-micro-service/proxy/load_balance"
"github.com/ichunt2019/ichunt-micro-service/registry"
_ "github.com/ichunt2019/ichunt-micro-service/registry/etcd"
"io"
......@@ -15,10 +16,10 @@ import (
)
func main() {
rs1 := &RealServer{Addr: "127.0.0.1:2003"}
rs1 := &RealServer{Addr: "192.168.2.232:2003"}
rs1.Run()
rs2 := &RealServer{Addr: "127.0.0.1:2004"}
rs2 := &RealServer{Addr: "192.168.2.232:2004"}
rs2.Run()
//服务注册
......@@ -43,22 +44,27 @@ func register(){
registry.WithRegistryPath("/ichuntMicroService/"),
registry.WithHeartBeat(5),
)
load_balance.Init(registryInst)
if err != nil {
fmt.Printf("init registry failed, err:%v", err)
return
}
service := &registry.Service{
Name: "comment_service",
Name: "ichuntMicroService",
}
service.Nodes = append(service.Nodes, &registry.Node{
IP: "127.0.0.1",
IP: "192.168.2.232",
Port: 2003,
Weight:1,
},
&registry.Node{
IP: "127.0.0.1",
IP: "192.168.2.232",
Port: 2004,
Weight:2,
},
)
registryInst.Register(context.TODO(), service)
......
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