add missing import and Tag marshalling

cmd/telegraf/telegraf.go

@@ -9,6 +9,7 @@ import (
 	"strings"
 
 	"github.com/influxdb/telegraf"
+	_ "github.com/influxdb/telegraf/outputs/all"
 	_ "github.com/influxdb/telegraf/plugins/all"
 )
 
@@ -63,6 +64,10 @@ func main() {
 	if err != nil {
 		log.Fatal(err)
 	}
+	if len(outputs) == 0 {
+		log.Printf("Error: no ouputs found, did you provide a config file?")
+		os.Exit(1)
+	}
 
 	plugins, err := ag.LoadPlugins(*fPLuginsFilter)
 	if err != nil {
@@ -111,6 +116,7 @@ func main() {
 		log.Printf("Agent Config: Interval:%s, Debug:%#v, Hostname:%#v\n",
 			ag.Interval, ag.Debug, ag.Hostname)
 	}
+	log.Printf("Tags enabled: %v", config.ListTags)
 
 	if *fPidfile != "" {
 		f, err := os.Create(*fPidfile)

config.go

@@ -273,6 +273,7 @@ func LoadConfig(path string) (*Config, error) {
 	}
 
 	c := &Config{
+		Tags:    make(map[string]string),
 		plugins: make(map[string]*ast.Table),
 		outputs: make(map[string]*ast.Table),
 	}
@@ -286,6 +287,10 @@ func LoadConfig(path string) (*Config, error) {
 		switch name {
 		case "agent":
 			c.agent = subtbl
+		case "tags":
+			if err := toml.UnmarshalTable(subtbl, c.Tags); err != nil {
+				return nil, errInvalidConfig
+			}
 		case "outputs":
 			for outputName, outputVal := range subtbl.Fields {
 				outputSubtbl, ok := outputVal.(*ast.Table)