Refactor timers and random injection
Refactor timers and random injection

savaki/tchannel,Zirpon/tchannel,bunnyblue/tchannel,savaki/tchannel,hustxiaoc/tchannel,benfleis/tchannel,sasa233/tchannel,Zirpon/tchannel,benfleis/tchannel,bunnyblue/tchannel,RyanTech/tchannel,i/tchannel,chenwenbin928/tchannel,vanloswang/tchannel,chenwenbin928/tchannel,Zirpon/tchannel,vanloswang/tchannel,bunnyblue/tchannel,i/tchannel,savaki/tchannel,chenwenbin928/tchannel,RyanTech/tchannel,vanloswang/tchannel,i/tchannel,hustxiaoc/tchannel,benfleis/tchannel,hustxiaoc/tchannel,RyanTech/tchannel,sasa233/tchannel,sasa233/tchannel