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package server
import (
"errors"
"fmt"
"sync"
"github.com/NeowayLabs/wabbit"
"github.com/NeowayLabs/wabbit/utils"
)
const (
MaxChannels int = 2 << 10
)
var (
servers map[string]*AMQPServer
mu *sync.Mutex
)
func init() {
servers = make(map[string]*AMQPServer)
mu = &sync.Mutex{}
}
// AMQPServer is a fake AMQP server. It handle the fake TCP connection
type AMQPServer struct {
running bool
amqpuri string
notifyChans map[string]*utils.ErrBroadcast
channels map[string][]*Channel
vhost *VHost
}
// NewServer returns a new fake amqp server
func newServer(amqpuri string) *AMQPServer {
return &AMQPServer{
amqpuri: amqpuri,
notifyChans: make(map[string]*utils.ErrBroadcast),
channels: make(map[string][]*Channel),
vhost: NewVHost("/"),
}
}
// CreateChannel returns a new fresh channel
func (s *AMQPServer) CreateChannel(connID string, conn wabbit.Conn) (wabbit.Channel, error) {
if _, ok := s.channels[connID]; !ok {
s.channels[connID] = make([]*Channel, 0, MaxChannels)
}
channels := s.channels[connID]
if len(channels) >= MaxChannels {
return nil, fmt.Errorf("Channel quota exceeded, Wabbit"+
" supports only %d fake channels for tests.", MaxChannels)
}
ch := NewChannel(s.vhost)
channels = append(channels, ch)
s.channels[connID] = channels
tempCh := make(chan wabbit.Error)
conn.NotifyClose(tempCh)
go func() {
for err := range tempCh {
ch.errSpread.Write(err)
}
close(tempCh)
}()
return ch, nil
}
// Start a new AMQP server fake-listening on host:port
func (s *AMQPServer) Start() error {
mu.Lock()
defer mu.Unlock()
s.running = true
return nil
}
// Stop the fake server
func (s *AMQPServer) Stop() error {
mu.Lock()
defer mu.Unlock()
s.running = false
for _, c := range s.notifyChans {
c.Write(utils.NewError(
utils.ChannelError,
"channel/connection is not open",
false,
false,
))
}
s.notifyChans = make(map[string]*utils.ErrBroadcast)
for _, chanMap := range s.channels {
for _, eachChan := range chanMap {
eachChan.Close()
}
}
return nil
}
// NewServer starts a new fake server
func NewServer(amqpuri string) *AMQPServer {
var amqpServer *AMQPServer
mu.Lock()
defer mu.Unlock()
amqpServer = servers[amqpuri]
if amqpServer == nil {
amqpServer = newServer(amqpuri)
servers[amqpuri] = amqpServer
}
return amqpServer
}
func (s *AMQPServer) addNotify(connID string, nchan *utils.ErrBroadcast) {
mu.Lock()
defer mu.Unlock()
s.notifyChans[connID] = nchan
}
func (s *AMQPServer) delNotify(connID string) {
mu.Lock()
defer mu.Unlock()
delete(s.notifyChans, connID)
}
func getServer(amqpuri string) (*AMQPServer, error) {
mu.Lock()
defer mu.Unlock()
amqpServer := servers[amqpuri]
if amqpServer == nil || amqpServer.running == false {
return nil, errors.New("Network unreachable")
}
return amqpServer, nil
}
func Connect(amqpuri string, connID string, errBroadcast *utils.ErrBroadcast) (*AMQPServer, error) {
amqpServer, err := getServer(amqpuri)
if err != nil {
return nil, err
}
amqpServer.addNotify(connID, errBroadcast)
return amqpServer, nil
}
func Close(amqpuri string, connID string) error {
amqpServer, err := getServer(amqpuri)
if err != nil {
return errors.New("Failed to close connection")
}
amqpServer.delNotify(connID)
return nil
}
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