/
client.go
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/
client.go
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// Copyright (C) 2014-2018 Goodrain Co., Ltd.
// RAINBOND, Application Management Platform
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version. For any non-GPL usage of Rainbond,
// one or multiple Commercial Licenses authorized by Goodrain Co., Ltd.
// must be obtained first.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package client
import (
"github.com/goodrain/rainbond/mq/api/grpc/pb"
clientv3 "github.com/coreos/etcd/clientv3"
etcdnaming "github.com/coreos/etcd/clientv3/naming"
context "golang.org/x/net/context"
grpc "google.golang.org/grpc"
)
//MQClient mq grpc client
type MQClient struct {
pb.TaskQueueClient
ctx context.Context
cancel context.CancelFunc
}
//NewMqClient new a mq client
func NewMqClient(etcdendpoints []string, defaultserver string) (*MQClient, error) {
ctx, cancel := context.WithCancel(context.Background())
var conn *grpc.ClientConn
if etcdendpoints != nil && len(defaultserver) > 1 {
c, err := clientv3.New(clientv3.Config{Endpoints: etcdendpoints, Context: ctx})
if err != nil {
return nil, err
}
r := &etcdnaming.GRPCResolver{Client: c}
b := grpc.RoundRobin(r)
conn, err = grpc.DialContext(ctx, "/rainbond/discover/rainbond_mq", grpc.WithBalancer(b), grpc.WithInsecure())
if err != nil {
return nil, err
}
} else {
var err error
conn, err = grpc.DialContext(ctx, defaultserver, grpc.WithInsecure())
if err != nil {
return nil, err
}
}
cli := pb.NewTaskQueueClient(conn)
client := &MQClient{
ctx: ctx,
cancel: cancel,
}
client.TaskQueueClient = cli
return client, nil
}
//Close mq grpc client must be closed after uesd
func (m *MQClient) Close() {
m.cancel()
}