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service.go
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service.go
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package sensu
import (
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"log"
"net"
"regexp"
"github.com/influxdata/kapacitor"
)
type Service struct {
addr string
source string
logger *log.Logger
}
var validNamePattern = regexp.MustCompile(`^[\w\.-]+$`)
func NewService(c Config, l *log.Logger) *Service {
return &Service{
addr: c.Addr,
source: c.Source,
logger: l,
}
}
func (s *Service) Open() error {
return nil
}
func (s *Service) Close() error {
return nil
}
func (s *Service) Alert(name, output string, level kapacitor.AlertLevel) error {
if !validNamePattern.MatchString(name) {
return fmt.Errorf("invalid name %q for sensu alert. Must match %v", name, validNamePattern)
}
var status int
switch level {
case kapacitor.OKAlert:
status = 0
case kapacitor.InfoAlert:
status = 0
case kapacitor.WarnAlert:
status = 1
case kapacitor.CritAlert:
status = 2
default:
status = 3
}
postData := make(map[string]interface{})
postData["name"] = name
postData["source"] = s.source
postData["output"] = output
postData["status"] = status
addr, err := net.ResolveTCPAddr("tcp", s.addr)
if err != nil {
return err
}
conn, err := net.DialTCP("tcp", nil, addr)
if err != nil {
return err
}
defer conn.Close()
enc := json.NewEncoder(conn)
err = enc.Encode(postData)
if err != nil {
return err
}
resp, err := ioutil.ReadAll(conn)
if string(resp) != "ok" {
return errors.New("sensu socket error: " + string(resp))
}
return nil
}