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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,120 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "github.com/reddec/container" | ||
| "text/template" | ||
| "log" | ||
| "os" | ||
| "bytes" | ||
| "gopkg.in/telegram-bot-api.v4" | ||
| "github.com/pkg/errors" | ||
| "time" | ||
| ) | ||
|
|
||
| type Telegram struct { | ||
| Token string `yaml:"token"` | ||
| Recipients []int64 `yaml:"recipients"` | ||
| Services []string `yaml:"services"` | ||
| Template string `yaml:"template"` | ||
|
|
||
| servicesSet map[string]bool `yaml:"-"` | ||
| templateBin *template.Template `yaml:"-"` | ||
| logger *log.Logger `yaml:"-"` | ||
| bot *tgbotapi.BotAPI `yaml:"-"` | ||
| hostname string | ||
| } | ||
|
|
||
| func (c *Telegram) Prepare() error { | ||
| c.servicesSet = make(map[string]bool) | ||
| for _, srv := range c.Services { | ||
| c.servicesSet[srv] = true | ||
| } | ||
| t, err := template.New("").Parse(c.Template) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| c.templateBin = t | ||
| c.logger = log.New(os.Stderr, "[telegram] ", log.LstdFlags) | ||
| bot, err := tgbotapi.NewBotAPI(c.Token) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| c.bot = bot | ||
| c.hostname, _ = os.Hostname() | ||
| return nil | ||
| } | ||
|
|
||
| func (c *Telegram) Stopped(runnable container.Runnable, id container.ID, err error) { | ||
| if c.servicesSet[runnable.Label()] { | ||
| params := map[string]interface{}{ | ||
| "action": "stopped", | ||
| "id": id, | ||
| "error": err, | ||
| "label": runnable.Label(), | ||
| "hostname": c.hostname, | ||
| "time": time.Now().String(), | ||
| } | ||
| c.renderAndSend(params) | ||
| } | ||
| } | ||
|
|
||
| func (c *Telegram) renderAndSend(params map[string]interface{}) { | ||
| message := &bytes.Buffer{} | ||
| renderErr := c.templateBin.Execute(message, params) | ||
| if renderErr != nil { | ||
| c.logger.Println("failed render:", renderErr, "; params:", params) | ||
| } else { | ||
| msg := tgbotapi.NewMessage(0, message.String()) | ||
| msg.ParseMode = "markdown" | ||
| for _, r := range c.Recipients { | ||
| msg.ChatID = r | ||
| _, err := c.bot.Send(msg) | ||
| if err != nil { | ||
| c.logger.Println("failed send message to", r, "due to", err) | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func (c *Telegram) Spawned(runnable container.Runnable, id container.ID) { | ||
| if c.servicesSet[runnable.Label()] { | ||
| params := map[string]interface{}{ | ||
| "action": "spawned", | ||
| "id": id, | ||
| "label": runnable.Label(), | ||
| "hostname": c.hostname, | ||
| "time": time.Now().String(), | ||
| } | ||
| c.renderAndSend(params) | ||
| } | ||
| } | ||
|
|
||
| func mergeTelegram(a *Telegram, b *Telegram) (*Telegram, error) { | ||
| if a == nil { | ||
| return b, nil | ||
| } | ||
| if b == nil { | ||
| return a, nil | ||
| } | ||
| if a.Token == "" { | ||
| a.Token = b.Token | ||
| } | ||
| if b.Token == "" { | ||
| b.Token = a.Token | ||
| } | ||
| if a.Token != b.Token { | ||
| return nil, errors.New("token are different") | ||
| } | ||
| if a.Template == "" { | ||
| a.Template = b.Template | ||
| } | ||
| if b.Template == "" { | ||
| b.Template = a.Template | ||
| } | ||
| if a.Template != b.Template { | ||
| return nil, errors.New("different templates") | ||
| } | ||
| a.Recipients = append(a.Recipients, b.Recipients...) | ||
| a.Services = append(a.Services, b.Services...) | ||
| return a, nil | ||
| } |