Only run the cpu plugin twice when using -test

This can be easily extended to other plugins that need it by tacking
their name onto the switch statement. Also eliminating the unused
TestAllPlugins code and cleaning up some stray Printlns

CHANGELOG.md

@@ -1,6 +1,7 @@
 ## v0.1.10 [unreleased]
 
 ### Release Notes
+- The -test flag will now only output 2 collections for plugins that need it
 
 ### Features
 - [#205](https://github.com/influxdb/telegraf/issues/205): Include per-db redis keyspace info

agent.go

@@ -116,14 +116,15 @@ func (a *Agent) LoadOutputs(filters []string) ([]string, error) {
 	var names []string
 
 	for _, name := range a.Config.OutputsDeclared() {
-		fmt.Println(outputs.Outputs)
 		creator, ok := outputs.Outputs[name]
 		if !ok {
 			return nil, fmt.Errorf("Undefined but requested output: %s", name)
 		}
 
 		if sliceContains(name, filters) || len(filters) == 0 {
-			fmt.Println("OUTPUT ENABLED: ", name)
+			if a.Debug {
+				log.Println("Output Enabled: ", name)
+			}
 			output := creator()
 
 			err := a.Config.ApplyOutput(name, output)
@@ -306,36 +307,6 @@ func (a *Agent) flush(bp *BatchPoints) error {
 	return outerr
 }
 
-// TestAllPlugins verifies that we can 'Gather' from all plugins with the
-// default configuration
-func (a *Agent) TestAllPlugins() error {
-	var names []string
-
-	for name := range plugins.Plugins {
-		names = append(names, name)
-	}
-
-	sort.Strings(names)
-
-	var acc BatchPoints
-	acc.Debug = true
-
-	fmt.Printf("* Testing all plugins with default configuration\n")
-
-	for _, name := range names {
-		plugin := plugins.Plugins[name]()
-
-		fmt.Printf("* Plugin: %s\n", name)
-
-		acc.Prefix = name + "_"
-		if err := plugin.Gather(&acc); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
 // Test verifies that we can 'Gather' from all plugins with their configured
 // Config struct
 func (a *Agent) Test() error {
@@ -347,7 +318,7 @@ func (a *Agent) Test() error {
 		acc.Prefix = plugin.name + "_"
 		acc.Config = plugin.config
 
-		fmt.Printf("* Plugin: %s Collection 1\n", plugin.name)
+		fmt.Printf("* Plugin: %s, Collection 1\n", plugin.name)
 		if plugin.config.Interval != 0 {
 			fmt.Printf("* Internal: %s\n", plugin.config.Interval)
 		}
@@ -356,13 +327,18 @@ func (a *Agent) Test() error {
 			return err
 		}
 
+		// Special instructions for some plugins. cpu, for example, needs to be
+		// run twice in order to return cpu usage percentages.
+		switch plugin.name {
+		case "cpu":
 			time.Sleep(500 * time.Millisecond)
-		fmt.Printf("* Plugin: %s Collection 2\n", plugin.name)
+			fmt.Printf("* Plugin: %s, Collection 2\n", plugin.name)
 			if err := plugin.plugin.Gather(&acc); err != nil {
 				return err
 			}
 		}
 
+	}
 	return nil
 }
 

cmd/telegraf/telegraf.go

@@ -109,16 +109,10 @@ func main() {
 	}
 
 	if *fTest {
-		if *fConfig != "" {
 		err = ag.Test()
-		} else {
-			err = ag.TestAllPlugins()
-		}
-
 		if err != nil {
 			log.Fatal(err)
 		}
-
 		return
 	}