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topic_service.go
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topic_service.go
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package topicService
import (
"fmt"
"github.com/ttstringiot/golangiot/stgcommon"
"github.com/ttstringiot/golangiot/stgcommon/logger"
"github.com/ttstringiot/golangiot/stgcommon/protocol/route"
"github.com/ttstringiot/golangiot/stgcommon/utils"
"github.com/ttstringiot/golangiot/stgweb/models"
"github.com/ttstringiot/golangiot/stgweb/modules"
set "github.com/deckarep/golang-set"
"strings"
"sync"
)
var (
topicServ *TopicService
sOnce sync.Once
)
// TopicService topic管理器
// Author: tianyuliang
// Since: 2017/11/7
type TopicService struct {
*modules.AbstractService
}
// Default 返回默认唯一处理对象
// Author: tianyuliang
// Since: 2017/11/7
func Default() *TopicService {
sOnce.Do(func() {
topicServ = NewTopicService()
})
return topicServ
}
// NewTopicService 初始化
// Author: tianyuliang
// Since: 2017/11/7
func NewTopicService() *TopicService {
return &TopicService{
AbstractService: modules.Default(),
}
}
// List 查询所有Topic列表(不区分topic类型)
// Author: tianyuliang
// Since: 2017/11/6
func (service *TopicService) GetAllList() (topicVos []*models.TopicVo, err error) {
defer utils.RecoveredFn()
defaultMQAdminExt := service.GetDefaultMQAdminExtImpl()
defaultMQAdminExt.Start()
defer defaultMQAdminExt.Shutdown()
topicVos = make([]*models.TopicVo, 0)
clusterTopicWappers, err := defaultMQAdminExt.GetClusterTopicWappers()
if err != nil {
return topicVos, err
}
if clusterTopicWappers == nil || len(clusterTopicWappers) == 0 {
return topicVos, fmt.Errorf("DefaultMQAdminExtImpl GetClusterTopicWappers() is blank")
}
for _, wapper := range clusterTopicWappers {
topicVo := models.ToTopicVo(wapper)
topicVos = append(topicVos, topicVo)
}
logger.Infof("all topic size = %d", len(topicVos))
return topicVos, nil
}
// UpdateTopicConfig 更新Topic配置信息
// Author: tianyuliang
// Since: 2017/11/6
func (service *TopicService) UpdateTopicConfig(topicVo *models.UpdateTopic) error {
defer utils.RecoveredFn()
defaultMQAdminExt := service.GetDefaultMQAdminExtImpl()
defaultMQAdminExt.Start()
defer defaultMQAdminExt.Shutdown()
//if models.IsSystemTopic(topic) {
// return fmt.Errorf("系统Topic不允许更新")
//}
custername, _, err := service.FindClusterByTopic(topicVo.Topic)
if err != nil || custername == "" {
return fmt.Errorf("Topic名称 %s 不存在 ", topicVo.Topic)
}
masterSet, err := defaultMQAdminExt.FetchMasterAddrByClusterName(topicVo.ClusterName)
if err != nil {
return err
}
if masterSet == nil || masterSet.Cardinality() == 0 {
return fmt.Errorf("masterSet is empty, update topic failed")
}
for brokerAddr := range masterSet.Iterator().C {
defaultMQAdminExt.CreateAndUpdateTopicConfig(brokerAddr.(string), topicVo.ToTopicConfig())
}
return nil
}
// DeleteTopicFromCluster 删除指定集群对应broker所属的topic
// Author: tianyuliang
// Since: 2017/11/6
func (service *TopicService) DeleteTopic(topic, clusterName string) error {
defer utils.RecoveredFn()
defaultMQAdminExt := service.GetDefaultMQAdminExtImpl()
defaultMQAdminExt.Start()
defer defaultMQAdminExt.Shutdown()
if models.IsSystemTopic(topic) {
return fmt.Errorf("系统Topic不允许删除")
}
custername, _, err := service.FindClusterByTopic(topic)
if err != nil || custername == "" {
return fmt.Errorf("Topic名称 %s 不存在 ", topic)
}
masterSet, err := defaultMQAdminExt.FetchMasterAddrByClusterName(clusterName)
if err != nil {
return err
}
if masterSet == nil || masterSet.Cardinality() == 0 {
return fmt.Errorf("masterSet is empty, create topic failed. topic=%s, clusterName=%s", topic, clusterName)
}
logger.Infof("delete topic from broker. topic=%s, clusterName=%s, masterSet=%s", topic, clusterName, masterSet.String())
defaultMQAdminExt.DeleteTopicInBroker(masterSet, topic)
if !stgcommon.IsEmpty(service.ConfigureInitializer.GetNamesrvAddr()) {
namesrvAddrs := strings.Split(service.ConfigureInitializer.GetNamesrvAddr(), ";")
if namesrvAddrs != nil && len(namesrvAddrs) > 0 {
nameServerSet := set.NewSet()
for _, namesrvAddr := range namesrvAddrs {
nameServerSet.Add(namesrvAddr)
}
logger.Infof("delete topic from namesrv. topic=%s, clusterName=%s, nameServerSet=%s", topic, clusterName, nameServerSet.String())
defaultMQAdminExt.DeleteTopicInNameServer(nameServerSet, topic)
}
}
return nil
}
// CreateTopic 创建Topic
// Author: tianyuliang
// Since: 2017/11/6
func (service *TopicService) CreateTopic(t *models.CreateTopic) error {
defer utils.RecoveredFn()
defaultMQAdminExt := service.GetDefaultMQAdminExtImpl()
defaultMQAdminExt.Start()
defer defaultMQAdminExt.Shutdown()
masterSet, err := defaultMQAdminExt.FetchMasterAddrByClusterName(t.ClusterName)
if err != nil {
return err
}
if masterSet == nil || masterSet.Cardinality() == 0 {
return fmt.Errorf("masterSet is empty, create topic failed. topic=%s, clusterName=%s", t.Topic, t.ClusterName)
}
for brokerAddr := range masterSet.Iterator().C {
defaultMQAdminExt.CreateCustomTopic(brokerAddr.(string), t.ToTopicConfig())
}
return nil
}
// QueryTopicRoute 查询topic路由信息
// Author: tianyuliang
// Since: 2017/11/6
func (service *TopicService) QueryTopicRoute(topic, clusterName string) (*route.TopicRouteData, error) {
defer utils.RecoveredFn()
defaultMQAdminExt := service.GetDefaultMQAdminExtImpl()
defaultMQAdminExt.Start()
defer defaultMQAdminExt.Shutdown()
topicRouteData, err := defaultMQAdminExt.ExamineTopicRouteInfo(topic)
if err != nil || topicRouteData == nil {
return route.NewTopicRouteData(), err
}
return topicRouteData, nil
}
// FindClusterByTopic 查询Topic归属的集群名称
// Author: tianyuliang
// Since: 2017/11/9
func (service *TopicService) FindClusterByTopic(topic string) (string, bool, error) {
srcTopics, err := service.GetAllList()
if err != nil {
return "", false, err
}
if srcTopics == nil || len(srcTopics) == 0 {
return "", false, fmt.Errorf("current topic[%s] do't has cluster", topic)
}
for _, t := range srcTopics {
if t.Topic == topic {
return t.ClusterName, true, nil
}
}
return "", true, fmt.Errorf("topic[%s] not belong to one cluster", topic)
}