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queue.go
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queue.go
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package servers
import (
"context"
"encoding/json"
app2 "github.com/go-home-admin/home/app"
"github.com/go-home-admin/home/app/queues"
"github.com/go-home-admin/home/bootstrap/constraint"
"github.com/go-home-admin/home/bootstrap/services"
"github.com/go-home-admin/home/bootstrap/services/app"
"github.com/go-redis/redis/v8"
log "github.com/sirupsen/logrus"
"os"
"reflect"
"strings"
"sync"
"time"
)
type Task func(job constraint.Job, next func(constraint.Job))
// Queue @Bean("queue")
type Queue struct {
// 队列配置文件的所有配置
fileConfig *services.Config `inject:"config, queue"`
// 队列具体配置
queueConfig *services.Config `inject:"config, queue.queue"`
// 连接
Connect *services.Redis `inject:"database, @config(queue.connection)"`
// 执行限速度
limit uint // 如果 == 0 , 则停止
limitChan chan bool
// 所有路由注册
route map[string]constraint.Job
// 支持并发调用job, 这个是route副本保存结构
dispatch sync.Map
// 打开广播进程, 允许把某个message投递到广播队列, 所有服务都会收到
broadcast *Broadcast
delayQueue DelayQueue
middlewares []Task
middlewaresLen int
}
func (q *Queue) Init() {
q.route = make(map[string]constraint.Job)
q.limit = uint(q.queueConfig.GetInt("worker_limit", 100))
q.limitChan = make(chan bool, q.limit)
q.Listen(queues.GetAllProvider())
}
func (q *Queue) StartBroadcast() *Broadcast {
if q.broadcast == nil {
q.broadcast = &Broadcast{
Connect: q.Connect,
queue: q,
}
}
return q.broadcast
}
func (q *Queue) CloseBroadcast() {
if q.broadcast != nil {
q.broadcast.Close()
}
}
func (q *Queue) HasBroadcast() bool {
return q.broadcast != nil
}
// Push 投递队列
func (q *Queue) Push(message interface{}) {
jsonStr, err := json.Marshal(message)
if err != nil {
log.Error(err)
return
}
stream, _ := q.getJobInfo(message)
route := jobToRoute(message)
d := q.Connect.Client.XAdd(context.Background(), &redis.XAddArgs{
Stream: stream,
MaxLen: int64(q.queueConfig.GetInt("stream_limit", 10000)),
Values: map[string]interface{}{
"route": route,
"event": jsonStr,
},
})
if d.Err() != nil {
log.Error("Queue push, redis xadd error: ", d.Err())
}
}
// Delay 延后投递执行
func (q *Queue) Delay(t time.Duration) *DelayTask {
return &DelayTask{
interval: t,
queue: q,
message: nil,
}
}
// Publish 对message广播
func (q *Queue) Publish(message interface{}, topics ...string) {
if q.broadcast == nil {
log.Info("广播服务未开启")
return
}
jsonStr, err := json.Marshal(message)
if err != nil {
log.Error(err)
return
}
if len(topics) == 0 {
topics = append(topics, app2.Config("queue.broadcast.topic", "home_broadcast"))
}
route := jobToRoute(message)
for _, topic := range topics {
q.broadcast.Publish(topic, Msg{
Route: route,
Data: string(jsonStr),
})
}
}
func (q *Queue) Run() {
q.initStream()
for route, job := range q.route {
q.dispatch.Store(route, reflect.New(reflect.TypeOf(job).Elem()))
}
serialQueue := make([]interface{}, 0)
baseQueue := make([]interface{}, 0)
for _, job := range q.route {
s, ok := job.(constraint.SetSerial)
if ok && s.SetSerial() {
serialQueue = append(serialQueue, job)
} else {
baseQueue = append(baseQueue, job)
}
}
q.runBaseQueueList(baseQueue)
// 必须串行执行的job
if len(serialQueue) != 0 {
if app.HasBean("election") {
// 在选举服务之后启动
app.GetBean("election").(app.AppendRun).AppendRun(func() {
q.runSerialQueueList(serialQueue)
})
} else {
log.Info("存在串行执行的job, 但没有注册 election 服务, 如果有多个副本运行可能得不到预想效果")
q.runSerialQueueList(serialQueue)
}
}
// 广播进程
if q.HasBroadcast() {
go q.broadcast.Subscribe(q.fileConfig.GetString("broadcast.topic", "home_broadcast"))
}
if q.delayQueue != nil {
q.delayQueue.Run()
}
}
func (q *Queue) runBaseQueueList(list []interface{}) {
groupQueue := make(map[string]map[string]string)
for _, job := range list {
stream, group := q.getJobInfo(job)
if groupQueue[group] == nil {
groupQueue[group] = make(map[string]string)
}
groupQueue[group][stream] = ">"
}
for group, streams := range groupQueue {
ruS := make([]string, 0)
for s, s2 := range streams {
ruS = append(ruS, s, s2)
}
go q.runBaseQueue(group, ruS)
}
}
func (q *Queue) runBaseQueue(group string, streams []string) {
ctx := context.Background()
Hostname, _ := os.Hostname()
consumer := strings.ReplaceAll(q.queueConfig.GetString("consumer_name"), "{hostname}", Hostname)
block := time.Duration(q.queueConfig.GetInt("stream_block", 60)) * time.Second
for q.limit > 0 {
cmd := q.Connect.Client.XReadGroup(ctx, &redis.XReadGroupArgs{
Group: group,
Consumer: consumer,
Streams: streams,
Count: 1,
Block: block,
NoAck: false,
})
if cmd.Err() == nil {
result, _ := cmd.Result()
for _, XStream := range result {
for _, xMessage := range XStream.Messages {
route, ok := xMessage.Values["route"]
if !ok {
log.Error("队列任务数据无法解析route, 一个job的结构必须是 {event:'', route:''}")
continue
}
event, ok := xMessage.Values["event"]
if !ok {
log.Error("队列任务数据无法解析event, 一个job的结构必须是 {event:'', route:''}")
continue
}
job, ok := q.dispatch.Load(route.(string))
if !ok {
log.Errorf("无法处理的route: %v", route.(string))
continue
}
go q.runJob(job.(reflect.Value), event.(string), xMessage.ID, XStream.Stream, group)
q.limitChan <- true
}
}
} else if cmd.Err().Error() == "redis: nil" {
time.Sleep(3 * time.Second)
} else if strings.Contains(cmd.Err().Error(), "NOGROUP") {
// 初始化Stream和Group
q.Connect.Client.XGroupCreateMkStream(ctx, streams[0], group, "0")
time.Sleep(3 * time.Second)
} else {
log.Errorf("redis命令未知错误, XReadGroup, %v", cmd.Err().Error())
time.Sleep(60 * time.Second)
}
}
}
func (q *Queue) runSerialQueueList(list []interface{}) {
groupQueue := make(map[string]map[string]string)
for _, job := range list {
stream, group := q.getJobInfo(job)
if groupQueue[group] == nil {
groupQueue[group] = make(map[string]string)
}
groupQueue[group][stream] = ">"
}
for group, streams := range groupQueue {
ruS := make([]string, 0)
for s, s2 := range streams {
ruS = append(ruS, s, s2)
}
go q.runSerialQueue(group, ruS)
}
}
func (q *Queue) runSerialQueue(group string, streams []string) {
ctx := context.Background()
Hostname, _ := os.Hostname()
consumer := strings.ReplaceAll(q.queueConfig.GetString("consumer_name"), "{hostname}", Hostname)
block := time.Duration(q.queueConfig.GetInt("stream_block", 60)) * time.Second
limitChan := make(chan bool, 1)
for q.limit > 0 {
cmd := q.Connect.Client.XReadGroup(ctx, &redis.XReadGroupArgs{
Group: group,
Consumer: consumer,
Streams: streams,
Count: 1,
Block: block,
NoAck: false,
})
if cmd.Err() == nil {
result, _ := cmd.Result()
for _, XStream := range result {
for _, xMessage := range XStream.Messages {
route, ok := xMessage.Values["route"]
if !ok {
log.Error("队列任务数据无法解析route, 一个job的结构必须是 {event:'', route:''}")
continue
}
event, ok := xMessage.Values["event"]
if !ok {
log.Error("队列任务数据无法解析event, 一个job的结构必须是 {event:'', route:''}")
continue
}
job, ok := q.dispatch.Load(route.(string))
if !ok {
log.Errorf("无法处理的route: %v", route.(string))
continue
}
go func(job reflect.Value, event string, id, stream, group string) {
defer func() {
if err := recover(); err != nil {
log.Error("队列任务执行发生错误", err)
}
<-limitChan
}()
v := job.Interface()
newJob, ok := v.(constraint.Job)
if ok {
err := json.Unmarshal([]byte(event), newJob)
if err != nil && len(event) <= 2 {
// "[]"无需报错
log.Errorf("runJob, json.Unmarshal data err = %v", err)
} else {
next := func(job constraint.Job) {
newJob.Handler()
q.Connect.Client.XAck(context.Background(), stream, group, id)
}
q.middlewareDispatcher(newJob, next)
}
}
}(job.(reflect.Value), event.(string), xMessage.ID, XStream.Stream, group)
limitChan <- true
}
}
} else if cmd.Err().Error() == "redis: nil" {
time.Sleep(3 * time.Second)
} else if strings.Contains(cmd.Err().Error(), "NOGROUP") {
// 初始化Stream和Group
q.Connect.Client.XGroupCreateMkStream(ctx, streams[0], group, "0")
time.Sleep(3 * time.Second)
} else {
log.Error(cmd.Err().Error())
time.Sleep(60 * time.Second)
}
}
}
func (q *Queue) Exit() {
q.limit = 0
}
func (q *Queue) Listen(jobs []interface{}) {
// 注册路由绑定Job
for _, job := range jobs {
handle, ok := job.(constraint.Job)
if ok {
// job 绑定的路由
route := ""
mr, ok := job.(constraint.SetRoute)
if ok {
route = mr.SetRoute()
} else {
// route = message.*
route = jobToRoute(handle)
}
q.AddJob(route, handle)
}
}
}
func (q *Queue) AddJob(route string, handle constraint.Job) {
if _, o := q.route[route]; !o {
q.route[route] = handle
} else {
panic("队列路由: " + route + " 重复, 需要在您的message对象创建 SetRoute() string , 使用自定义路由避免重复。")
}
}
// 自动计算struct路径
func jobToRoute(handle interface{}) string {
mr, ok := handle.(constraint.SetRoute)
if ok {
return mr.SetRoute()
}
ref := reflect.TypeOf(handle)
if ref.Kind() == reflect.Ptr {
ref = ref.Elem()
}
// message
mty := ref.PkgPath() + ref.Name()
if strings.Index(mty, "message") != -1 {
return mty
}
// job
for i := 0; i < ref.NumField(); i++ {
field := ref.Field(i)
ty := field.Type.PkgPath() + field.Type.Name()
if strings.Index(ty, "message") != -1 {
return ty
}
}
panic("自动注册路由的信息总线的对象路径必须包含 `message`。")
}
func (q *Queue) initStream() {
ctx := context.Background()
streams := make(map[string]bool)
for _, job := range q.route {
stream, group := q.getJobInfo(job)
if !streams[stream] {
continue
}
xInfoG, err := q.Connect.Client.XInfoGroups(ctx, stream).Result()
streams[stream] = true
if err != nil {
if err.Error() != "ERR no such key" {
log.Warn(err)
continue
} else {
q.Connect.Client.XAdd(ctx, &redis.XAddArgs{
Stream: stream,
ID: "1",
Values: map[string]interface{}{
"route": "",
"event": "init",
},
})
q.Connect.Client.XDel(ctx, stream, "1")
}
}
mInfoG := make(map[string]redis.XInfoGroup)
for _, g := range xInfoG {
mInfoG[g.Name] = g
}
if _, ok := mInfoG[group]; !ok {
q.Connect.Client.XGroupCreate(ctx, stream, group, "$")
}
}
}
func (q *Queue) getJobInfo(job interface{}) (stream string, group string) {
jobStream, ok := job.(constraint.SetQueue)
if ok {
stream = jobStream.SetQueue()
} else {
stream = q.queueConfig.GetString("stream_name", "home_default_stream")
}
jobGroup, ok := job.(constraint.SetGroup)
if ok {
group = jobGroup.SetGroup()
} else {
group = q.queueConfig.GetString("group_name", "home_default_group")
}
return stream, group
}
func (q *Queue) jobToGroup(job interface{}) string {
g, ok := job.(constraint.SetGroup)
if ok {
return g.SetGroup()
}
return q.queueConfig.GetString("group_name", "home_default_group")
}
func (q *Queue) runJob(job reflect.Value, event string, id, stream, group string) {
defer func() {
if err := recover(); err != nil {
log.Error("队列任务执行发生错误", err)
}
<-q.limitChan
}()
v := job.Interface()
newJob, ok := v.(constraint.Job)
if ok {
err := json.Unmarshal([]byte(event), newJob)
if err != nil && len(event) <= 2 {
log.Errorf("runJob, json.Unmarshal data err = %v", err)
} else {
next := func(job constraint.Job) {
job.Handler()
q.Connect.Client.XAck(context.Background(), stream, group, id)
}
q.middlewareDispatcher(newJob, next)
}
}
}
func (q *Queue) AddMiddleware(task Task) {
ml := len(q.middlewares)
if ml == 0 {
q.middlewares = []Task{task}
} else {
nextTask := q.middlewares[ml-1]
q.middlewares = append(q.middlewares, func(job constraint.Job, next func(constraint.Job)) {
task(job, func(job constraint.Job) {
nextTask(job, next)
})
})
}
q.middlewaresLen = ml + 1
}
func (q *Queue) middlewareDispatcher(job constraint.Job, next func(job constraint.Job)) {
if q.middlewaresLen == 0 {
next(job)
} else {
q.middlewares[q.middlewaresLen-1](job, next)
}
}
// StartDelayQueue 开启延时队列
func (q *Queue) StartDelayQueue() {
if app.HasBean("delay_queue") {
q.delayQueue = app.GetBean("delay_queue").(DelayQueue)
} else {
q.delayQueue = NewDelayQueueForMysql()
}
}
// DelayTask 延时队列包装
type DelayTask struct {
// 延后多少时间投递
interval time.Duration
queue *Queue
message interface{}
}
func (d *DelayTask) Push(message interface{}) {
d.message = message
d.queue.delayQueue.Push(*d)
}