/
delaytrigger.go
249 lines (217 loc) · 5.57 KB
/
delaytrigger.go
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// Package delaytrigger 延迟触发器
package delaytrigger
import (
"fmt"
"time"
redigoplus "github.com/cheetah-fun-gs/goplus/dao/redigo"
redigo "github.com/gomodule/redigo/redis"
)
const (
triggerTsMin = 120
triggerTsMax = 3600 * 24 * 10
)
// DelayTrigger 延迟触发器
type DelayTrigger struct {
pool *redigo.Pool
name string // 触发器名称
}
// New 获取一个新的触发器
func New(pool *redigo.Pool, name string) *DelayTrigger {
return &DelayTrigger{
pool: pool,
name: name,
}
}
// eventID 表示一类事件
// targetID 目标ID
// eventData 事件数据
// 触发器事件 hset key为eventID value为 eventData + TriggerTs
func (trigger *DelayTrigger) getTriggerKey() string {
return fmt.Sprintf("%s:delaytriggerinfo", trigger.name)
}
// 事件目标 Sets key为targetID
func (trigger *DelayTrigger) getEventKey(eventID string) string {
return fmt.Sprintf("%s:%s:delaytriggerevent", trigger.name, eventID)
}
func isMatchID(id string, ids []string) bool {
if len(ids) == 0 {
return true
}
for _, i := range ids {
if id == i {
return true
}
}
return false
}
func isMathStatus(status EventStatus, statuses []EventStatus) bool {
if len(statuses) == 0 {
return true
}
for _, s := range statuses {
if status == s {
return true
}
}
return false
}
// TriggerTsRange 触发时间范围
type TriggerTsRange struct {
Min int64
Max int64
}
// Param 参数
type Param struct {
IDS []string
Statuses []EventStatus
TriggerTsRange *TriggerTsRange
}
// GetEventsByParam 获取指定事件 ids statuses 为空表示 全匹配
func (trigger *DelayTrigger) GetEventsByParam(param *Param) ([]*Event, error) {
// 格式化参数
if param == nil {
param = &Param{
IDS: []string{},
Statuses: []EventStatus{},
TriggerTsRange: &TriggerTsRange{},
}
} else if param.TriggerTsRange == nil {
param.TriggerTsRange = &TriggerTsRange{}
}
conn := trigger.pool.Get()
defer conn.Close()
key := trigger.getTriggerKey()
events := []*Event{}
if len(param.IDS) == 0 {
if err := redigoplus.HVals(conn, key, &events); err != nil {
return nil, err
}
} else {
v := map[string]interface{}{}
for _, i := range param.IDS {
v[i] = &Event{}
}
if err := redigoplus.HMGet(conn, key, v); err != nil {
return nil, err
}
for _, vv := range v {
events = append(events, vv.(*Event))
}
}
rs := []*Event{}
for _, event := range events {
if isMathStatus(event.Status, param.Statuses) &&
event.TriggerTs >= param.TriggerTsRange.Min &&
(param.TriggerTsRange.Max == 0 || event.TriggerTs < param.TriggerTsRange.Max) {
rs = append(rs, event)
}
}
return rs, nil
}
// EventAndCount 事件信息和目标数
type EventAndCount struct {
*Event
Count int
}
// GetEventsAndCountsByParam 获取所有事件信息
func (trigger *DelayTrigger) GetEventsAndCountsByParam(param *Param) (int, []*EventAndCount, error) {
events, err := trigger.GetEventsByParam(param)
if err != nil {
return 0, nil, err
}
newIDS := []string{}
for _, event := range events {
newIDS = append(newIDS, event.ID)
}
counts, err := trigger.getTargetCounts(newIDS)
if err != nil {
return 0, nil, err
}
total := 0
rs := []*EventAndCount{}
for i := 0; i < len(events); i++ {
total += counts[i]
rs = append(rs, &EventAndCount{
Event: events[i],
Count: counts[i],
})
}
return total, rs, nil
}
// getTargetCounts 获取事件的目标数
func (trigger *DelayTrigger) getTargetCounts(ids []string) ([]int, error) {
conn := trigger.pool.Get()
defer conn.Close()
for _, id := range ids {
if err := conn.Send("SCARD", trigger.getEventKey(id)); err != nil {
return nil, err
}
}
if err := conn.Flush(); err != nil {
return nil, err
}
rs := []int{}
for i := 0; i < len(ids); i++ {
count, err := redigo.Int(conn.Receive())
if err != nil {
return nil, err
}
rs = append(rs, count)
}
return rs, nil
}
// 以下为快捷方式
// GetEvents 获得所有事件
func (trigger *DelayTrigger) GetEvents() ([]*Event, error) {
return trigger.GetEventsByParam(nil)
}
// GetActivedEvents 获得所有活跃事件
func (trigger *DelayTrigger) GetActivedEvents() ([]*Event, error) {
now := time.Now()
param := &Param{
Statuses: []EventStatus{EventStatusActived},
TriggerTsRange: &TriggerTsRange{
Max: now.Unix(),
},
}
return trigger.GetEventsByParam(param)
}
// GetActivedEventsByID 按事件id获得所有活跃事件
func (trigger *DelayTrigger) GetActivedEventsByID(ids []string) ([]*Event, error) {
now := time.Now()
param := &Param{
IDS: ids,
Statuses: []EventStatus{EventStatusActived},
TriggerTsRange: &TriggerTsRange{
Max: now.Unix(),
},
}
return trigger.GetEventsByParam(param)
}
// GetEventsAndCounts 获得所有事件 和 目标数
func (trigger *DelayTrigger) GetEventsAndCounts() (int, []*EventAndCount, error) {
return trigger.GetEventsAndCountsByParam(nil)
}
// GetActivedEventsAndCounts 获得所有活跃事件 和 目标数
func (trigger *DelayTrigger) GetActivedEventsAndCounts() (int, []*EventAndCount, error) {
now := time.Now()
param := &Param{
Statuses: []EventStatus{EventStatusActived},
TriggerTsRange: &TriggerTsRange{
Max: now.Unix(),
},
}
return trigger.GetEventsAndCountsByParam(param)
}
// GetActivedEventsAndCountsByID 获得所有活跃事件 和 目标数
func (trigger *DelayTrigger) GetActivedEventsAndCountsByID(ids []string) (int, []*EventAndCount, error) {
now := time.Now()
param := &Param{
IDS: ids,
Statuses: []EventStatus{EventStatusActived},
TriggerTsRange: &TriggerTsRange{
Max: now.Unix(),
},
}
return trigger.GetEventsAndCountsByParam(param)
}