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Copy pathapp.go
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executable file
·310 lines (242 loc) · 6.42 KB
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package app
import (
"errors"
"expvar"
"fmt"
"sync"
log "github.com/golang/glog"
"nuntius/channel"
"nuntius/connection"
"nuntius/events"
"nuntius/subscription"
)
// Application represents a Pusher application
type Application struct {
sync.RWMutex
Name string
AppID string
Key string
Secret string
OnlySSL bool
Enabled bool
UserEvents bool
WebHooks bool
URLWebHook string
channels map[string]*channel.Channel
connections map[string]*connection.Connection
Stats *expvar.Map `json:"-"`
}
// NewApplication returns a new Application
func NewApplication(
name,
appID,
key,
secret string,
onlySSL,
enabled,
userEvents,
webHooks bool,
webHookURL string,
) *Application {
a := &Application{
Name: name,
AppID: appID,
Key: key,
Secret: secret,
OnlySSL: onlySSL,
Enabled: enabled,
UserEvents: userEvents,
WebHooks: webHooks,
URLWebHook: webHookURL,
}
a.connections = make(map[string]*connection.Connection)
a.channels = make(map[string]*channel.Channel)
a.Stats = expvar.NewMap(fmt.Sprintf("%s (%s)", a.Name, a.AppID))
return a
}
// Channels returns the full list of channels
func (a *Application) Channels() []*channel.Channel {
a.RLock()
defer a.RUnlock()
var channels []*channel.Channel
for _, c := range a.channels {
channels = append(channels, c)
}
return channels
}
// PresenceChannels Only Presence channels
func (a *Application) PresenceChannels() []*channel.Channel {
a.RLock()
defer a.RUnlock()
var channels []*channel.Channel
for _, c := range a.channels {
if c.IsPresence() {
channels = append(channels, c)
}
}
return channels
}
// PrivateChannels Only Private channels
func (a *Application) PrivateChannels() []*channel.Channel {
a.RLock()
defer a.RUnlock()
var channels []*channel.Channel
for _, c := range a.channels {
if c.IsPrivate() {
channels = append(channels, c)
}
}
return channels
}
// PublicChannels Only Public channels
func (a *Application) PublicChannels() []*channel.Channel {
a.RLock()
defer a.RUnlock()
var channels []*channel.Channel
for _, c := range a.channels {
if c.IsPublic() {
channels = append(channels, c)
}
}
return channels
}
// Disconnect Socket
func (a *Application) Disconnect(socketID string) {
log.Infof("disconnecting socket %+v", socketID)
conn, err := a.FindConnection(socketID)
if err != nil {
log.Infof("socket not found, %+v", err)
return
}
// Unsubscribe from channels
for _, c := range a.channels {
if c.IsSubscribed(conn) {
if err := c.Unsubscribe(conn); err != nil {
log.Errorf("error while calling Channel.Unsubscribe, %+v", err)
continue
}
}
}
// Remove from Application
a.Lock()
_, exists := a.connections[conn.SocketID]
a.Unlock()
if !exists {
return
}
a.Lock()
delete(a.connections, conn.SocketID)
a.Unlock()
a.Stats.Add("TotalConnections", -1)
}
// Connect a new Subscriber
func (a *Application) Connect(conn *connection.Connection) {
log.Infof("adding a new Connection %s to Application %s", conn.SocketID, a.Name)
a.Lock()
defer a.Unlock()
a.connections[conn.SocketID] = conn
a.Stats.Add("TotalConnections", 1)
}
// FindConnection Find a Connection on this Application
func (a *Application) FindConnection(socketID string) (*connection.Connection, error) {
a.RLock()
defer a.RUnlock()
conn, exists := a.connections[socketID]
if exists {
return conn, nil
}
return nil, errors.New("connection not found")
}
// RemoveChannel removes the Channel from Application
func (a *Application) RemoveChannel(c *channel.Channel) {
log.Infof("remove the Channel %s from Application %s", c.ID, a.Name)
a.Lock()
defer a.Unlock()
delete(a.channels, c.ID)
if c.IsPresence() {
a.Stats.Add("TotalPresenceChannels", -1)
}
if c.IsPrivate() {
a.Stats.Add("TotalPrivateChannels", -1)
}
if c.IsPublic() {
a.Stats.Add("TotalPublicChannels", -1)
}
a.Stats.Add("TotalChannels", -1)
}
// AddChannel Add a new Channel to this APP
func (a *Application) AddChannel(c *channel.Channel) {
log.Infof("adding a new Channel %s to Application %s", c.ID, a.Name)
a.Lock()
defer a.Unlock()
a.channels[c.ID] = c
if c.IsPresence() {
a.Stats.Add("TotalPresenceChannels", 1)
}
if c.IsPrivate() {
a.Stats.Add("TotalPrivateChannels", 1)
}
if c.IsPublic() {
a.Stats.Add("TotalPublicChannels", 1)
}
a.Stats.Add("TotalChannels", 1)
}
// FindOrCreateChannelByChannelID Returns a Channel from this Application
// If not found then the Channel is created and added to this Application
func (a *Application) FindOrCreateChannelByChannelID(n string) *channel.Channel {
c, err := a.FindChannelByChannelID(n)
if err != nil {
c = channel.New(
n,
channel.WithChannelOccupiedListener(func(c *channel.Channel, s *subscription.Subscription) {
a.TriggerChannelOccupiedHook(c)
}),
channel.WithChannelVacatedListener(func(c *channel.Channel, s *subscription.Subscription) {
a.TriggerChannelVacatedHook(c)
}),
channel.WithMemberAddedListener(func(c *channel.Channel, s *subscription.Subscription) {
a.TriggerMemberAddedHook(c, s)
}),
channel.WithMemberRemovedListener(func(c *channel.Channel, s *subscription.Subscription) {
a.TriggerMemberRemovedHook(c, s)
}),
channel.WithClientEventListener(func(c *channel.Channel, s *subscription.Subscription, event string, data interface{}) {
a.TriggerClientEventHook(c, s, event, data)
}),
)
a.AddChannel(c)
}
return c
}
// FindChannelByChannelID Find the Channel by Channel ID
func (a *Application) FindChannelByChannelID(n string) (*channel.Channel, error) {
a.RLock()
defer a.RUnlock()
c, exists := a.channels[n]
if exists {
return c, nil
}
return nil, errors.New("channel does not exists")
}
// Publish an event into the channel
// skip the ignore connection
func (a *Application) Publish(c *channel.Channel, event events.Raw, ignore string) error {
a.Stats.Add("TotalUniqueMessages", 1)
return c.Publish(event, ignore)
}
// Unsubscribe unsubscribe the given connection from the channel
// remove the channel from the application if it is empty
func (a *Application) Unsubscribe(c *channel.Channel, conn *connection.Connection) error {
err := c.Unsubscribe(conn)
if err != nil {
return err
}
if !c.IsOccupied() {
a.RemoveChannel(c)
}
return nil
}
// Subscribe the connection into the given channel
func (a *Application) Subscribe(c *channel.Channel, conn *connection.Connection, data string) error {
return c.Subscribe(conn, data)
}