Add wlan station and interface metrics collection. (#14)

* Fix newlines.
* Added wlan metrics.
* Fix WlanSTA collector - return on errors.

config/config.go

@@ -1,45 +1,47 @@
-package config
-
-import (
-	"io"
-	"io/ioutil"
-
-	yaml "gopkg.in/yaml.v2"
-)
-
-// Config represents the configuration for the exporter
-type Config struct {
-	Devices  []Device `yaml:"devices"`
-	Features struct {
-		BGP    bool `yaml:"bgp,omitempty"`
-		DHCP   bool `yaml:"dhcp,omitempty"`
-		DHCPv6 bool `yaml:"dhcpv6,omitempty"`
-		Routes bool `yaml:"routes,omitempty"`
-		Pools  bool `yaml:"pools,omitempty"`
-		Optics bool `yaml:"optics,omitempty"`
-	} `yaml:"features,omitempty"`
-}
-
-// Device represents a target device
-type Device struct {
-	Name     string `yaml:"name"`
-	Address  string `yaml:"address"`
-	User     string `yaml:"user"`
-	Password string `yaml:"password"`
-}
-
-// Load reads YAML from reader and unmashals in Config
-func Load(r io.Reader) (*Config, error) {
-	b, err := ioutil.ReadAll(r)
-	if err != nil {
-		return nil, err
-	}
-
-	c := &Config{}
-	err = yaml.Unmarshal(b, c)
-	if err != nil {
-		return nil, err
-	}
-
-	return c, nil
-}
+package config
+
+import (
+	"io"
+	"io/ioutil"
+
+	yaml "gopkg.in/yaml.v2"
+)
+
+// Config represents the configuration for the exporter
+type Config struct {
+	Devices  []Device `yaml:"devices"`
+	Features struct {
+		BGP     bool `yaml:"bgp,omitempty"`
+		DHCP    bool `yaml:"dhcp,omitempty"`
+		DHCPv6  bool `yaml:"dhcpv6,omitempty"`
+		Routes  bool `yaml:"routes,omitempty"`
+		Pools   bool `yaml:"pools,omitempty"`
+		Optics  bool `yaml:"optics,omitempty"`
+		WlanSTA bool `yaml:"wlansta,omitempty"`
+		WlanIF  bool `yaml:"wlanif,omitempty"`
+	} `yaml:"features,omitempty"`
+}
+
+// Device represents a target device
+type Device struct {
+	Name     string `yaml:"name"`
+	Address  string `yaml:"address"`
+	User     string `yaml:"user"`
+	Password string `yaml:"password"`
+}
+
+// Load reads YAML from reader and unmashals in Config
+func Load(r io.Reader) (*Config, error) {
+	b, err := ioutil.ReadAll(r)
+	if err != nil {
+		return nil, err
+	}
+
+	c := &Config{}
+	err = yaml.Unmarshal(b, c)
+	if err != nil {
+		return nil, err
+	}
+
+	return c, nil
+}