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service.go
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service.go
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package dao
import (
gin "github.com/gin-gonic/gin"
"github.com/pkg/errors"
"github.com/yguilai/go-gateway/common/lib"
dto "github.com/yguilai/go-gateway/dto"
"github.com/yguilai/go-gateway/public"
"net/http/httptest"
"strings"
"sync"
)
type ServiceDetail struct {
Info *ServiceInfo `json:"info" description:"基本信息"`
HTTPRule *HttpRule `json:"http_rule" description:"http规则"`
TCPRule *TcpRule `json:"tcp_rule" description:"tcp规则"`
GRPCRule *GrpcRule `json:"grpc_rule" description:"grpc规则"`
LoadBalance *LoadBalance `json:"load_balance" description:"负载均衡信息"`
AccessControl *AccessControl `json:"access_control" description:"请求控制信息"`
}
type ServiceManager struct {
ServiceMap map[string]*ServiceDetail
ServiceSlice []*ServiceDetail
Locker sync.RWMutex
init sync.Once
err error
}
var ServiceManagerHandler *ServiceManager
func init() {
ServiceManagerHandler = NewServiceManager()
}
func NewServiceManager() *ServiceManager {
return &ServiceManager{
ServiceMap: map[string]*ServiceDetail{},
ServiceSlice: []*ServiceDetail{},
Locker: sync.RWMutex{},
init: sync.Once{},
}
}
func (s *ServiceManager) GetTcpServiceList() []*ServiceDetail {
list := make([]*ServiceDetail, 0)
for _, serverItem := range s.ServiceSlice {
tempItem := serverItem
if tempItem.Info.LoadType == public.LoadTypeTCP {
list = append(list, tempItem)
}
}
return list
}
func (s *ServiceManager) GetGrpcServiceList() []*ServiceDetail {
list := make([]*ServiceDetail, 0)
for _, serverItem := range s.ServiceSlice {
tempItem := serverItem
if tempItem.Info.LoadType == public.LoadTypeGRPC {
list = append(list, tempItem)
}
}
return list
}
func (s *ServiceManager) HTTPAccessMode(c *gin.Context) (*ServiceDetail, error) {
//1、前缀匹配 /abc ==> serviceSlice.rule
//2、域名匹配 www.test.com ==> serviceSlice.rule
//host c.Request.Host
//path c.Request.URL.Path
host := c.Request.Host
host = host[:strings.Index(host, ":")]
path := c.Request.URL.Path
for _, item := range s.ServiceSlice {
if item.Info.LoadType != public.LoadTypeHTTP {
continue
}
if item.HTTPRule.RuleType == public.HTTPRuleTypeDomain {
if item.HTTPRule.Rule == host {
return item, nil
}
}
if item.HTTPRule.RuleType == public.HTTPRuleTypePrefixURL {
if strings.HasPrefix(path, item.HTTPRule.Rule) {
return item, nil
}
}
}
return nil, errors.New("not matched service")
}
const MaxServiceCount = 99999
// LoadOnce 服务启动 载入数据
func (s *ServiceManager) LoadOnce() error {
s.init.Do(func() {
serviceInfo := &ServiceInfo{}
c, _ := gin.CreateTestContext(httptest.NewRecorder())
tx, err := lib.GetGormPool("default")
if err != nil {
s.err = err
return
}
params := &dto.ServiceListInput{PageNo: 1, PageSize: MaxServiceCount}
list, _, err := serviceInfo.PageList(c, tx, params)
if err != nil {
s.err = err
return
}
s.Locker.Lock()
defer s.Locker.Unlock()
for _, item := range list {
tmpItem := item
serviceDetail, err := tmpItem.ServiceDetail(c, tx, &tmpItem)
if err != nil {
s.err = err
return
}
s.ServiceMap[item.ServiceName] = serviceDetail
s.ServiceSlice = append(s.ServiceSlice, serviceDetail)
}
})
return s.err
}