Rainbond/mq/client/client.go
2018-12-04 18:08:51 +08:00

131 lines
3.4 KiB
Go

// 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 (
"encoding/json"
"fmt"
"time"
"github.com/Sirupsen/logrus"
"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"
)
//BuilderTopic builder for linux
var BuilderTopic = "builder"
//WindowsBuilderTopic builder for windows
var WindowsBuilderTopic = "windows_builder"
//WorkerTopic worker topic
var WorkerTopic = "worker"
//MQClient mq client
type MQClient interface {
pb.TaskQueueClient
Close()
SendBuilderTopic(t TaskStruct) error
}
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()
}
//TaskStruct task struct
type TaskStruct struct {
Topic string
TaskType string
TaskBody interface{}
}
//buildTask build task
func buildTask(t TaskStruct) (*pb.EnqueueRequest, error) {
var er pb.EnqueueRequest
taskJSON, err := json.Marshal(t.TaskBody)
if err != nil {
logrus.Errorf("tran task json error")
return &er, err
}
er.Topic = t.Topic
er.Message = &pb.TaskMessage{
TaskType: t.TaskType,
CreateTime: time.Now().Format(time.RFC3339),
TaskBody: taskJSON,
User: "rainbond",
}
return &er, nil
}
func (m *mqClient) SendBuilderTopic(t TaskStruct) error {
request, err := buildTask(t)
if err != nil {
return fmt.Errorf("create task body error %s", err.Error())
}
ctx, cancel := context.WithTimeout(m.ctx, time.Second*5)
defer cancel()
_, err = m.TaskQueueClient.Enqueue(ctx, request)
if err != nil {
return fmt.Errorf("send enqueue request error %s", err.Error())
}
return nil
}