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server_address_group.go
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/
server_address_group.go
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package serverconfigs
import (
"github.com/TeaOSLab/EdgeCommon/pkg/configutils"
"strings"
"sync"
)
type ServerAddressGroup struct {
fullAddr string
servers []*ServerConfig
// 域名和服务映射
strictDomainMap map[string]map[string]*ServerConfig // domain[:2] => {domain => *ServerConfig}
fuzzyDomainMap map[string]*ServerConfig // special domain => *ServerConfig
cacheLocker sync.RWMutex
cacheDomainMap map[string]map[string]*ServerConfig // domain[:2] => {domain => *ServerConfig}
countCacheDomains int
// 支持CNAME的服务
cnameDomainMap map[string]map[string]*ServerConfig // domain[:2] => {domain => *ServerConfig}
// 第一个TLS Server
firstTLSServer *ServerConfig
}
func NewServerAddressGroup(fullAddr string) *ServerAddressGroup {
return &ServerAddressGroup{
fullAddr: fullAddr,
strictDomainMap: map[string]map[string]*ServerConfig{},
fuzzyDomainMap: map[string]*ServerConfig{},
cacheDomainMap: map[string]map[string]*ServerConfig{},
cnameDomainMap: map[string]map[string]*ServerConfig{},
}
}
// Add 添加服务
func (this *ServerAddressGroup) Add(server *ServerConfig) {
for _, serverName := range server.AllStrictNames() {
var prefix = this.domainPrefix(serverName)
domainsMap, ok := this.strictDomainMap[prefix]
if ok {
domainsMap[serverName] = server
} else {
this.strictDomainMap[prefix] = map[string]*ServerConfig{serverName: server}
}
// CNAME
if server.SupportCNAME {
cnameDomainsMap, ok := this.cnameDomainMap[prefix]
if ok {
cnameDomainsMap[serverName] = server
} else {
this.cnameDomainMap[prefix] = map[string]*ServerConfig{serverName: server}
}
}
}
for _, serverName := range server.AllFuzzyNames() {
this.fuzzyDomainMap[serverName] = server
}
this.servers = append(this.servers, server)
// 第一个TLS Server
if this.firstTLSServer == nil && server.SSLPolicy() != nil && server.SSLPolicy().IsOn {
this.firstTLSServer = server
}
}
// FullAddr 获取完整的地址
func (this *ServerAddressGroup) FullAddr() string {
return this.fullAddr
}
// Protocol 获取当前分组的协议
func (this *ServerAddressGroup) Protocol() Protocol {
for _, p := range AllProtocols() {
if strings.HasPrefix(this.fullAddr, p.String()+":") {
return p
}
}
return ProtocolHTTP
}
// Addr 获取当前分组的地址
func (this *ServerAddressGroup) Addr() string {
protocol := this.Protocol()
if protocol == ProtocolUnix {
return strings.TrimPrefix(this.fullAddr, protocol.String()+":")
}
return strings.TrimPrefix(this.fullAddr, protocol.String()+"://")
}
// Servers 读取所有服务
func (this *ServerAddressGroup) Servers() []*ServerConfig {
return this.servers
}
// IsHTTP 判断当前分组是否为HTTP
func (this *ServerAddressGroup) IsHTTP() bool {
p := this.Protocol()
return p == ProtocolHTTP || p == ProtocolHTTP4 || p == ProtocolHTTP6
}
// IsHTTPS 判断当前分组是否为HTTPS
func (this *ServerAddressGroup) IsHTTPS() bool {
p := this.Protocol()
return p == ProtocolHTTPS || p == ProtocolHTTPS4 || p == ProtocolHTTPS6
}
// IsTCP 判断当前分组是否为TCP
func (this *ServerAddressGroup) IsTCP() bool {
p := this.Protocol()
return p == ProtocolTCP || p == ProtocolTCP4 || p == ProtocolTCP6
}
// IsTLS 判断当前分组是否为TLS
func (this *ServerAddressGroup) IsTLS() bool {
p := this.Protocol()
return p == ProtocolTLS || p == ProtocolTLS4 || p == ProtocolTLS6
}
// IsUnix 判断当前分组是否为Unix
func (this *ServerAddressGroup) IsUnix() bool {
p := this.Protocol()
return p == ProtocolUnix
}
// IsUDP 判断当前分组是否为UDP
func (this *ServerAddressGroup) IsUDP() bool {
p := this.Protocol()
return p == ProtocolUDP
}
// FirstServer 获取第一个Server
func (this *ServerAddressGroup) FirstServer() *ServerConfig {
if len(this.servers) > 0 {
return this.servers[0]
}
return nil
}
// FirstTLSServer 获取第一个TLS Server
func (this *ServerAddressGroup) FirstTLSServer() *ServerConfig {
return this.firstTLSServer
}
// MatchServerName 使用域名查找服务
func (this *ServerAddressGroup) MatchServerName(serverName string) *ServerConfig {
var prefix = this.domainPrefix(serverName)
// 试图从缓存中读取
this.cacheLocker.RLock()
if len(this.cacheDomainMap) > 0 {
domainMap, ok := this.cacheDomainMap[prefix]
if ok {
server, ok := domainMap[serverName]
if ok {
this.cacheLocker.RUnlock()
return server
}
}
}
this.cacheLocker.RUnlock()
domainMap, ok := this.strictDomainMap[prefix]
if ok {
server, ok := domainMap[serverName]
if ok {
return server
}
}
for pattern, server := range this.fuzzyDomainMap {
if configutils.MatchDomain(pattern, serverName) {
// 加入到缓存
this.cacheLocker.Lock()
// 限制缓存的最大尺寸,防止内存耗尽
// TODO 清理20%比较老的数据
if this.countCacheDomains < 1_000_000 {
domainMap, ok := this.cacheDomainMap[prefix]
if ok {
domainMap[serverName] = server
} else {
this.cacheDomainMap[prefix] = map[string]*ServerConfig{serverName: server}
}
this.countCacheDomains++
}
this.cacheLocker.Unlock()
return server
}
}
return nil
}
// MatchServerCNAME 使用CNAME查找服务
func (this *ServerAddressGroup) MatchServerCNAME(serverName string) *ServerConfig {
var prefix = this.domainPrefix(serverName)
domainMap, ok := this.cnameDomainMap[prefix]
if ok {
server, ok := domainMap[serverName]
if ok {
return server
}
}
return nil
}
func (this *ServerAddressGroup) domainPrefix(domain string) string {
if len(domain) < 2 {
return domain
}
return domain[:2]
}