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ergo/irc/stats.go
Alex Jaspersen 0241e0c31d Apply default user modes just before registration.
Previously, we were applying defaults before the user had completed
registration. This meant that the number of invisible users was
incremented when the user connected, and then the total was incremented
when registration was completed.

Now both counters are updated at the same time. If a user disconnects
prior to registration, +i has not yet been applied so it would not be
decremented.
2020-05-28 15:53:14 +00:00

99 lines
1.7 KiB
Go

package irc
import (
"sync"
)
type StatsValues struct {
Unknown int // unregistered clients
Total int // registered clients, including invisible
Max int // high-water mark of registered clients
Invisible int
Operators int
}
// Stats tracks statistics for a running server
type Stats struct {
StatsValues
mutex sync.Mutex
}
// Adds an unregistered client
func (s *Stats) Add() {
s.mutex.Lock()
s.Unknown += 1
s.mutex.Unlock()
}
// Activates a registered client, e.g., for the initial attach to a persistent client
func (s *Stats) AddRegistered(invisible, operator bool) {
s.mutex.Lock()
if invisible {
s.Invisible += 1
}
if operator {
s.Operators += 1
}
s.Total += 1
s.setMax()
s.mutex.Unlock()
}
// Transition a client from unregistered to registered
func (s *Stats) Register(invisible bool) {
s.mutex.Lock()
s.Unknown -= 1
if invisible {
s.Invisible += 1
}
s.Total += 1
s.setMax()
s.mutex.Unlock()
}
func (s *Stats) setMax() {
if s.Max < s.Total {
s.Max = s.Total
}
}
// Modify the Invisible count
func (s *Stats) ChangeInvisible(increment int) {
s.mutex.Lock()
s.Invisible += increment
s.mutex.Unlock()
}
// Modify the Operator count
func (s *Stats) ChangeOperators(increment int) {
s.mutex.Lock()
s.Operators += increment
s.mutex.Unlock()
}
// Remove a user from the server
func (s *Stats) Remove(registered, invisible, operator bool) {
s.mutex.Lock()
if registered {
s.Total -= 1
} else {
s.Unknown -= 1
}
if invisible {
s.Invisible -= 1
}
if operator {
s.Operators -= 1
}
s.mutex.Unlock()
}
// GetStats retrives total, invisible and oper count
func (s *Stats) GetValues() (result StatsValues) {
s.mutex.Lock()
result = s.StatsValues
s.mutex.Unlock()
return
}