mirror of https://github.com/poanetwork/quorum.git
66 lines
1.8 KiB
Go
66 lines
1.8 KiB
Go
// Copyright 2019 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package flowcontrol
|
|
|
|
import (
|
|
"fmt"
|
|
"time"
|
|
|
|
"github.com/ethereum/go-ethereum/common/mclock"
|
|
)
|
|
|
|
// logger collects events in string format and discards events older than the
|
|
// "keep" parameter
|
|
type logger struct {
|
|
events map[uint64]logEvent
|
|
writePtr, delPtr uint64
|
|
keep time.Duration
|
|
}
|
|
|
|
// logEvent describes a single event
|
|
type logEvent struct {
|
|
time mclock.AbsTime
|
|
event string
|
|
}
|
|
|
|
// newLogger creates a new logger
|
|
func newLogger(keep time.Duration) *logger {
|
|
return &logger{
|
|
events: make(map[uint64]logEvent),
|
|
keep: keep,
|
|
}
|
|
}
|
|
|
|
// add adds a new event and discards old events if possible
|
|
func (l *logger) add(now mclock.AbsTime, event string) {
|
|
keepAfter := now - mclock.AbsTime(l.keep)
|
|
for l.delPtr < l.writePtr && l.events[l.delPtr].time <= keepAfter {
|
|
delete(l.events, l.delPtr)
|
|
l.delPtr++
|
|
}
|
|
l.events[l.writePtr] = logEvent{now, event}
|
|
l.writePtr++
|
|
}
|
|
|
|
// dump prints all stored events
|
|
func (l *logger) dump(now mclock.AbsTime) {
|
|
for i := l.delPtr; i < l.writePtr; i++ {
|
|
e := l.events[i]
|
|
fmt.Println(time.Duration(e.time-now), e.event)
|
|
}
|
|
}
|