ADd consul support , multiple monitors, config file

config/config.go

@@ -0,0 +1,39 @@
+package config
+
+import (
+	"github.com/golang/glog"
+	"gopkg.in/yaml.v2"
+	"io/ioutil"
+	"path/filepath"
+	"time"
+)
+
+type Config struct {
+	Agent struct {
+		ListenAddr          string        `yaml:"listen_addr"`
+		MonitorInterval     time.Duration `yaml:"monitor_interval"`
+		CleanupTimer        time.Duration `yaml:"cleanup_timer"`
+		ConsulAddr          string        `yaml:"consul_addr"`
+		ConsulQueryInterval time.Duration `yaml:"consul_query_interval"`
+	}
+	Bgp struct {
+		LocalAS     int    `yaml:"local_as"`
+		PeerAS      int    `yaml:"peer_as"`
+		PeerIP      string `yaml:"peer_ip"`
+		Communities []string
+		Origin      string
+	}
+}
+
+func GetConfig(file string) *Config {
+	absPath, _ := filepath.Abs(file)
+	data, err := ioutil.ReadFile(absPath)
+	if err != nil {
+		glog.Exitf("FATAL: Unable to read config file: %v", err)
+	}
+	config := &Config{}
+	if err := yaml.Unmarshal(data, config); err != nil {
+		glog.Exitf("FATAL: Unable to decode yaml: %v", err)
+	}
+	return config
+}