soju/server.go

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package jounce
import (
"fmt"
"net"
"sync"
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"gopkg.in/irc.v3"
)
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type Logger interface {
Print(v ...interface{})
Printf(format string, v ...interface{})
}
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type prefixLogger struct {
logger Logger
prefix string
}
var _ Logger = (*prefixLogger)(nil)
func (l *prefixLogger) Print(v ...interface{}) {
v = append([]interface{}{l.prefix}, v...)
l.logger.Print(v...)
}
func (l *prefixLogger) Printf(format string, v ...interface{}) {
v = append([]interface{}{l.prefix}, v...)
l.logger.Printf("%v"+format, v...)
}
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type Upstream struct {
Addr string
Nick string
Username string
Realname string
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Channels []string
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}
type Server struct {
Hostname string
Logger Logger
Upstreams []Upstream // TODO: per-user
lock sync.Mutex
downstreamConns []*downstreamConn
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}
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func (s *Server) prefix() *irc.Prefix {
return &irc.Prefix{Name: s.Hostname}
}
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func (s *Server) Run() {
for i := range s.Upstreams {
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upstream := &s.Upstreams[i]
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// TODO: retry connecting
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go func() {
conn, err := connectToUpstream(s, upstream)
if err != nil {
s.Logger.Printf("failed to connect to upstream server %q: %v", upstream.Addr, err)
return
}
if err := conn.readMessages(); err != nil {
conn.logger.Printf("failed to handle messages: %v", err)
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}
}()
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}
}
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func (s *Server) Serve(ln net.Listener) error {
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for {
netConn, err := ln.Accept()
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if err != nil {
return fmt.Errorf("failed to accept connection: %v", err)
}
conn := newDownstreamConn(s, netConn)
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go func() {
s.lock.Lock()
s.downstreamConns = append(s.downstreamConns, conn)
s.lock.Unlock()
if err := conn.readMessages(); err != nil {
conn.logger.Printf("failed to handle messages: %v", err)
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}
s.lock.Lock()
for i, c := range s.downstreamConns {
if c == conn {
s.downstreamConns = append(s.downstreamConns[:i], s.downstreamConns[i+1:]...)
break
}
}
s.lock.Unlock()
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}()
}
}