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notification_slack.go
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notification_slack.go
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package main
import (
"errors"
"fmt"
"github.com/bluele/slack"
)
type SlackNotify struct {
slackApi *slack.Slack
Config *SlackNotifyConfig
msgChannel chan chan *Message
}
type SlackNotifyConfig struct {
Token string
ChannelName string
NotifyAs string
}
func (c *SlackNotifyConfig) IsValid() error {
if len(c.ChannelName) < 1 {
return errors.New("CannelName cannot be empty")
}
if len(c.Token) < 1 {
return errors.New("Token cannot be empty")
}
return nil
}
func (c *SlackNotifyConfig) IsEnabled() bool {
return len(c.Token) > 0
}
func (c *SlackNotifyConfig) GetService() (NotificationService, error) {
return newSlackNotify(c), nil
}
func (c *SlackNotifyConfig) GetName() string {
return "Slack"
}
func newSlackNotify(conf *SlackNotifyConfig) *SlackNotify {
sn := &SlackNotify{
slackApi: slack.New(conf.Token),
Config: conf,
}
return sn
}
func (s *SlackNotify) GetConsumer() func(*Message) {
return func(msg *Message) {
if err := s.SendMessage(msg); err != nil {
log.Printf("Cannot send message due to: %s", err)
}
}
}
func (s *SlackNotify) SendMessage(msg *Message) error {
content, err := s.MsgString(msg)
if err != nil {
return err
}
opts, err := s.MsgOptions(msg)
if err != nil {
return err
}
channel, err := s.slackApi.FindChannelByName(s.Config.ChannelName)
if err != nil {
return err
}
if err := s.slackApi.ChatPostMessage(channel.Id, content, opts); err != nil {
return err
}
return nil
}
func (s *SlackNotify) MsgString(msg *Message) (string, error) {
return fmt.Sprintf("%s: %s \n see more here: <%s>", msg.Type, msg.Content, msg.Url), nil
}
func (s *SlackNotify) MsgOptions(msg *Message) (*slack.ChatPostMessageOpt, error) {
return &slack.ChatPostMessageOpt{
AsUser: false,
Username: s.Config.NotifyAs,
}, nil
}