initial commit

config/config.go

@@ -0,0 +1,66 @@
+package config
+
+import (
+	"encoding/json"
+	"os"
+	"strconv"
+)
+
+type OIDTopicObject struct {
+	OID   string `json:"oid"`
+	Topic string `json:"topic"`
+}
+
+type SNMPEndpointObject struct {
+	Endpoint  string           `json:"endpoint"`
+	Community string           `json:"community"`
+	OIDTopics []OIDTopicObject `json:"oidTopics"`
+}
+
+// SNMPConfig basic config
+type SNMPMapObject struct {
+	SNMPEndpoints []SNMPEndpointObject `json:"snmpEndpoints"`
+}
+
+var (
+	// SNMPMap is the loaded JSON configuration
+	SNMPMap *SNMPMapObject
+
+	// Server is the MQTT server address
+	Server string
+
+	// Port is the MQTT server listen port
+	Port int
+
+	// ClientID is how the name of the client
+	ClientID string
+
+	// TopicPrefix is just that, a prefix for the presented data keys
+	TopicPrefix string
+
+	// Interval is the poll interval in seconds
+	Interval int
+)
+
+// ConnectionString returns the MQTT connection string
+func ConnectionString() string {
+	return "tcp://" + Server + ":" + strconv.Itoa(Port)
+}
+
+// LoadMap loads the file in to the struct
+func LoadMap(file string) error {
+	configFile, err := os.Open(file)
+	defer configFile.Close()
+	if err != nil {
+		return err
+	}
+
+	jsonParser := json.NewDecoder(configFile)
+	err = jsonParser.Decode(&SNMPMap)
+
+	if err != nil {
+		return err
+	}
+
+	return nil
+}