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slacklink.go
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slacklink.go
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package main
import (
"bytes"
"log"
"sync"
"github.com/google/uuid"
"github.com/nlopes/slack"
"gopkg.in/redis.v3"
messages "github.com/foxelbox/foxbukkitslacklink/messages"
)
type SlackLink struct {
Config *Config
wg *sync.WaitGroup
slack *slack.RTM
slackClient *slack.Client
redis *redis.Client
chatLinkOut chan *messages.ChatMessageIn
slackOut chan *SlackMessage
contextChannels map[string]string
contextChannelsLock sync.Mutex
contextBuffers map[string]*bytes.Buffer
contextBuffersLock sync.Mutex
specialAcknowledgementContexts map[string]struct {
MustContain string
Ref *slack.ItemRef
}
specialAcknowledgementContextsLock sync.Mutex
}
func (s *SlackLink) Initialize() {
s.chatLinkOut = make(chan *messages.ChatMessageIn)
s.slackOut = make(chan *SlackMessage)
s.contextChannels = make(map[string]string)
s.contextBuffers = make(map[string]*bytes.Buffer)
s.specialAcknowledgementContexts = make(map[string]struct {
MustContain string
Ref *slack.ItemRef
})
var err error
s.Config, err = ParseConfig("config.json")
if err != nil {
log.Fatalf("Failed to parse config: %v", err)
}
s.wg = new(sync.WaitGroup)
s.slackClient = slack.New(s.Config.Slack.Token)
authTest, err := s.slackClient.AuthTest()
if err != nil {
panic(err)
}
log.Printf("Connected to Slack as %q", authTest.User)
s.redis = redis.NewClient(&redis.Options{
Addr: s.Config.Redis.Address,
Password: s.Config.Redis.Password,
DB: s.Config.Redis.DB,
})
_, err = s.redis.Ping().Result()
if err != nil {
panic(err)
}
}
func (s *SlackLink) Run() {
s.wg.Add(5)
s.slack = s.slackClient.NewRTM()
go s.receiveChatLinkMessages()
go s.sendChatLinkMessages()
go s.receiveSlackMessages()
go s.sendSlackMessages()
go s.handleSlackMessages()
s.wg.Wait()
}
func (s *SlackLink) SendToChatLink(msg *ChatMessageIn) {
cmi := CMIToProtoCMI(msg)
s.chatLinkOut <- cmi
}
func (s *SlackLink) SendToSlack(msg *SlackMessage) {
s.slackOut <- msg
}
func (s *SlackLink) addContextAssociation(context uuid.UUID, channelID string) {
s.contextChannelsLock.Lock()
s.contextChannels[context.String()] = channelID
s.contextChannelsLock.Unlock()
s.contextBuffersLock.Lock()
s.contextBuffers[context.String()] = bytes.NewBuffer(nil)
s.contextBuffersLock.Unlock()
}
func (s *SlackLink) removeContextAssociation(context uuid.UUID) {
s.contextChannelsLock.Lock()
delete(s.contextChannels, context.String())
s.contextChannelsLock.Unlock()
s.contextBuffersLock.Lock()
delete(s.contextBuffers, context.String())
s.contextBuffersLock.Unlock()
s.removeSpecialAcknowledgementContext(context)
}
func (s *SlackLink) addSpecialAcknowledgementContext(context uuid.UUID, ref *slack.ItemRef, mustContain string) {
s.specialAcknowledgementContextsLock.Lock()
defer s.specialAcknowledgementContextsLock.Unlock()
s.specialAcknowledgementContexts[context.String()] = struct {
MustContain string
Ref *slack.ItemRef
}{
MustContain: mustContain,
Ref: ref,
}
}
func (s *SlackLink) getSpecialAcknowledgement(context uuid.UUID) (*slack.ItemRef, string, bool) {
s.specialAcknowledgementContextsLock.Lock()
defer s.specialAcknowledgementContextsLock.Unlock()
entry, ok := s.specialAcknowledgementContexts[context.String()]
if !ok {
return nil, "", false
}
return entry.Ref, entry.MustContain, true
}
func (s *SlackLink) removeSpecialAcknowledgementContext(context uuid.UUID) {
s.specialAcknowledgementContextsLock.Lock()
defer s.specialAcknowledgementContextsLock.Unlock()
delete(s.specialAcknowledgementContexts, context.String())
}
func (s *SlackLink) getContextBuffer(context uuid.UUID) *bytes.Buffer {
s.contextBuffersLock.Lock()
defer s.contextBuffersLock.Unlock()
buf, ok := s.contextBuffers[context.String()]
if !ok {
buf = new(bytes.Buffer)
s.contextBuffers[context.String()] = buf
}
return buf
}
func (s *SlackLink) appendContextBuffer(context uuid.UUID, str string) bool {
buf := s.getContextBuffer(context)
if buf == nil {
return false
}
if buf.Len() > 0 {
buf.WriteByte('\n')
}
buf.WriteString(str)
return true
}