加入网络层

Server/common/net/grpc/grpc_conn/conn_mgr.go

@@ -0,0 +1,62 @@
+package grpc_conn
+
+import (
+	"common/log"
+	"fmt"
+	"google.golang.org/grpc"
+	"math/rand"
+)
+
+type GrpcConnectionMgr struct {
+	poolM map[string]*GrpcConnection
+	poolS []*GrpcConnection
+}
+
+func NewGrpcConnectionMgr() *GrpcConnectionMgr {
+	return &GrpcConnectionMgr{
+		poolM: make(map[string]*GrpcConnection),
+		poolS: make([]*GrpcConnection, 0),
+	}
+}
+
+func (p *GrpcConnectionMgr) Store(sid, addr string) {
+	pool, err := NewGrpcConnection(sid, addr)
+	if err != nil {
+		log.Errorf("create grpc err: %v, sid: %v, addr: %v", err, sid, addr)
+		return
+	}
+	p.poolM[sid] = pool
+	p.poolS = append(p.poolS, pool)
+}
+
+func (p *GrpcConnectionMgr) Delete(sid string) int {
+	delete(p.poolM, sid)
+	for i, pool := range p.poolS {
+		if pool.sid == sid {
+			p.poolS = append(p.poolS[:i], p.poolS[i+1:]...)
+			break
+		}
+	}
+	return len(p.poolS)
+}
+
+func (p *GrpcConnectionMgr) Load(sid ...string) (*grpc.ClientConn, error) {
+	var pool *GrpcConnection
+	if len(sid) > 0 && len(sid[0]) > 0 {
+		pool = p.poolM[sid[0]]
+	} else {
+		pool = p.poolS[rand.Intn(len(p.poolS))]
+	}
+	if pool == nil {
+		return nil, fmt.Errorf("cannot find connection")
+	}
+	return pool.GetConnection(), nil
+}
+
+func (p *GrpcConnectionMgr) LoadAll() map[string]*grpc.ClientConn {
+	sidM := make(map[string]*grpc.ClientConn)
+	for sid, pool := range p.poolM {
+		sidM[sid] = pool.GetConnection()
+	}
+	return sidM
+}