goircd/events.go
2018-03-25 17:57:05 +03:00

121 lines
3.0 KiB
Go

/*
goircd -- minimalistic simple Internet Relay Chat (IRC) server
Copyright (C) 2014-2018 | wn Sergey Matveev <stargrave@stargrave.org>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package main
import (
"fmt"
"io/ioutil"
"log"
"os"
"path"
"time"
)
const (
EventNew = iota
EventDel = iota
EventMsg = iota
EventTopic = iota
EventWho = iota
EventMode = iota
EventTerm = iota
EventTick = iota
FormatMsg = "[%s] <%s> %s\n"
FormatMeta = "[%s] * %s %s\n"
)
var (
logSink chan LogEvent = make(chan LogEvent)
stateSink chan StateEvent = make(chan StateEvent)
)
// Client events going from each of client
// They can be either NEW, DEL or unparsed MSG
type ClientEvent struct {
client *Client
eventType int
text string
}
func (m ClientEvent) String() string {
return string(m.eventType) + ": " + m.client.String() + ": " + m.text
}
// Logging in-room events
// Intended to tell when, where and who send a message or meta command
type LogEvent struct {
where string
who string
what string
meta bool
}
// Logging events logger itself
// Each room's events are written to separate file in logdir
// Events include messages, topic and keys changes, joining and leaving
func Logger(logdir string, events <-chan LogEvent) {
mode := os.O_CREATE | os.O_WRONLY | os.O_APPEND
perm := os.FileMode(0660)
var format string
var logfile string
var fd *os.File
var err error
for event := range events {
logfile = path.Join(logdir, event.where+".log")
fd, err = os.OpenFile(logfile, mode, perm)
if err != nil {
log.Println("Can not open logfile", logfile, err)
continue
}
if event.meta {
format = FormatMeta
} else {
format = FormatMsg
}
_, err = fd.WriteString(fmt.Sprintf(format, time.Now(), event.who, event.what))
fd.Close()
if err != nil {
log.Println("Error writing to logfile", logfile, err)
}
}
}
type StateEvent struct {
where string
topic string
key string
}
// Room state events saver
// Room states shows that either topic or key has been changed
// Each room's state is written to separate file in statedir
func StateKeeper(statedir string, events <-chan StateEvent) {
var fn string
var data string
var err error
for event := range events {
fn = path.Join(statedir, event.where)
data = event.topic + "\n" + event.key + "\n"
err = ioutil.WriteFile(fn, []byte(data), os.FileMode(0660))
if err != nil {
log.Printf("Can not write statefile %s: %v", fn, err)
}
}
}