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timer_task_manager.go
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/
timer_task_manager.go
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package timer
import (
"fmt"
"strconv"
"github.com/superconsensus-chain/xupercore/kernel/contract/proposal/utils"
)
// Manager manages all timer releated data, providing read/write interface
type Manager struct {
Ctx *TimerCtx
}
// NewTimerTaskManager create instance of TimerManager
func NewTimerTaskManager(ctx *TimerCtx) (TimerManager, error) {
if ctx == nil || ctx.Ledger == nil || ctx.Contract == nil || ctx.BcName == "" {
return nil, fmt.Errorf("timer ctx set error")
}
t := NewKernContractMethod(ctx.BcName)
register := ctx.Contract.GetKernRegistry()
register.RegisterKernMethod(utils.TimerTaskKernelContract, "Add", t.Add)
register.RegisterKernMethod(utils.TimerTaskKernelContract, "Do", t.Do)
mg := &Manager{
Ctx: ctx,
}
return mg, nil
}
// GetTimerTasks get timer tasks
func (mgr *Manager) GetTimerTasks(blockHeight int64) (uint64, error) {
blockHeightStr := strconv.FormatInt(blockHeight, 10)
_, err := mgr.GetObjectBySnapshot(utils.GetTimerBucket(), []byte(blockHeightStr))
if err != nil {
return 0, fmt.Errorf("query timer tasks failed.err:%v", err)
}
return 0, nil
}
func (mgr *Manager) GetObjectBySnapshot(bucket string, object []byte) ([]byte, error) {
// 根据tip blockid 创建快照
reader, err := mgr.Ctx.Ledger.GetTipXMSnapshotReader()
if err != nil {
return nil, err
}
return reader.Get(bucket, object)
}