convert influxdb output to multiple outputs

outputs/all/all.go

@@ -0,0 +1,5 @@
+package all
+
+import (
+	_ "github.com/influxdb/telegraf/outputs/influxdb"
+)

outputs/influxdb/influxdb.go

@@ -0,0 +1,53 @@
+package influxdb
+
+import (
+	"net/url"
+
+	"github.com/influxdb/influxdb/client"
+	"github.com/influxdb/telegraf/outputs"
+)
+
+type InfluxDB struct {
+	URL       string
+	Username  string
+	Password  string
+	Database  string
+	UserAgent string
+
+	conn *client.Client
+}
+
+func (i *InfluxDB) Connect() error {
+	u, err := url.Parse(i.URL)
+	if err != nil {
+		return err
+	}
+
+	c, err := client.NewClient(client.Config{
+		URL:       *u,
+		Username:  i.Username,
+		Password:  i.Password,
+		UserAgent: i.UserAgent,
+	})
+
+	if err != nil {
+		return err
+	}
+
+	i.conn = c
+	return nil
+}
+
+func (i *InfluxDB) Write(bp client.BatchPoints) error {
+	bp.Database = i.Database
+	if _, err := i.conn.Write(bp); err != nil {
+		return err
+	}
+	return nil
+}
+
+func init() {
+	outputs.Add("influxdb", func() outputs.Output {
+		return &InfluxDB{}
+	})
+}

outputs/registry.go

@@ -0,0 +1,18 @@
+package outputs
+
+import (
+	"github.com/influxdb/influxdb/client"
+)
+
+type Output interface {
+	Connect() error
+	Write(client.BatchPoints) error
+}
+
+type Creator func() Output
+
+var Outputs = map[string]Creator{}
+
+func Add(name string, creator Creator) {
+	Outputs[name] = creator
+}