Add pass, drop, and interval to the plugin options

accumulator.go

@@ -14,11 +14,19 @@ type BatchPoints struct {
 	Debug bool
 
 	Prefix string
+
+	Config *ConfiguredPlugin
 }
 
 func (bp *BatchPoints) Add(name string, val interface{}, tags map[string]string) {
 	name = bp.Prefix + name
 
+	if bp.Config != nil {
+		if !bp.Config.ShouldPass(name) {
+			return
+		}
+	}
+
 	if bp.Debug {
 		var tg []string
 

agent.go

@@ -6,6 +6,7 @@ import (
 	"net/url"
 	"os"
 	"sort"
+	"sync"
 	"time"
 
 	"github.com/influxdb/influxdb/client"
@@ -15,12 +16,12 @@ import (
 type runningPlugin struct {
 	name   string
 	plugin plugins.Plugin
+	config *ConfiguredPlugin
 }
 
 type Agent struct {
 	Interval Duration
 	Debug    bool
-	HTTP     string
 	Hostname string
 
 	Config *Config
@@ -31,9 +32,9 @@ type Agent struct {
 }
 
 func NewAgent(config *Config) (*Agent, error) {
-	agent := &Agent{Config: config}
+	agent := &Agent{Config: config, Interval: Duration{10 * time.Second}}
 
-	err := config.Apply("agent", agent)
+	err := config.ApplyAgent(agent)
 	if err != nil {
 		return nil, err
 	}
@@ -91,12 +92,12 @@ func (a *Agent) LoadPlugins() ([]string, error) {
 
 		plugin := creator()
 
-		err := a.Config.Apply(name, plugin)
+		config, err := a.Config.ApplyPlugin(name, plugin)
 		if err != nil {
 			return nil, err
 		}
 
-		a.plugins = append(a.plugins, &runningPlugin{name, plugin})
+		a.plugins = append(a.plugins, &runningPlugin{name, plugin, config})
 		names = append(names, name)
 	}
 
@@ -105,6 +106,49 @@ func (a *Agent) LoadPlugins() ([]string, error) {
 	return names, nil
 }
 
+func (a *Agent) crankParallel() error {
+	points := make(chan *BatchPoints, len(a.plugins))
+
+	var wg sync.WaitGroup
+
+	for _, plugin := range a.plugins {
+		if plugin.config.Interval != 0 {
+			continue
+		}
+
+		wg.Add(1)
+		go func(plugin *runningPlugin) {
+			defer wg.Done()
+
+			var acc BatchPoints
+			acc.Debug = a.Debug
+			acc.Prefix = plugin.name + "_"
+			acc.Config = plugin.config
+
+			plugin.plugin.Gather(&acc)
+
+			points <- &acc
+		}(plugin)
+	}
+
+	wg.Wait()
+
+	close(points)
+
+	var acc BatchPoints
+	acc.Tags = a.Config.Tags
+	acc.Time = time.Now()
+	acc.Database = a.Config.Database
+
+	for sub := range points {
+		acc.Points = append(acc.Points, sub.Points...)
+	}
+
+	return nil
+	// _, err := a.conn.Write(acc.BatchPoints)
+	// return err
+}
+
 func (a *Agent) crank() error {
 	var acc BatchPoints
 
@@ -112,6 +156,7 @@ func (a *Agent) crank() error {
 
 	for _, plugin := range a.plugins {
 		acc.Prefix = plugin.name + "_"
+		acc.Config = plugin.config
 		err := plugin.plugin.Gather(&acc)
 		if err != nil {
 			return err
@@ -126,6 +171,36 @@ func (a *Agent) crank() error {
 	return err
 }
 
+func (a *Agent) crankSeparate(shutdown chan struct{}, plugin *runningPlugin) error {
+	ticker := time.NewTicker(plugin.config.Interval)
+
+	for {
+		var acc BatchPoints
+
+		acc.Debug = a.Debug
+
+		acc.Prefix = plugin.name + "_"
+		acc.Config = plugin.config
+		err := plugin.plugin.Gather(&acc)
+		if err != nil {
+			return err
+		}
+
+		acc.Tags = a.Config.Tags
+		acc.Time = time.Now()
+		acc.Database = a.Config.Database
+
+		a.conn.Write(acc.BatchPoints)
+
+		select {
+		case <-shutdown:
+			return nil
+		case <-ticker.C:
+			continue
+		}
+	}
+}
+
 func (a *Agent) TestAllPlugins() error {
 	var names []string
 
@@ -162,6 +237,13 @@ func (a *Agent) Test() error {
 
 	for _, plugin := range a.plugins {
 		acc.Prefix = plugin.name + "_"
+		acc.Config = plugin.config
+
+		fmt.Printf("* Plugin: %s\n", plugin.name)
+		if plugin.config.Interval != 0 {
+			fmt.Printf("* Internal: %s\n", plugin.config.Interval)
+		}
+
 		err := plugin.plugin.Gather(&acc)
 		if err != nil {
 			return err
@@ -179,10 +261,24 @@ func (a *Agent) Run(shutdown chan struct{}) error {
 		}
 	}
 
+	var wg sync.WaitGroup
+
+	for _, plugin := range a.plugins {
+		if plugin.config.Interval != 0 {
+			wg.Add(1)
+			go func(plugin *runningPlugin) {
+				defer wg.Done()
+				a.crankSeparate(shutdown, plugin)
+			}(plugin)
+		}
+	}
+
+	defer wg.Wait()
+
 	ticker := time.NewTicker(a.Interval.Duration)
 
 	for {
-		err := a.crank()
+		err := a.crankParallel()
 		if err != nil {
 			log.Printf("Error in plugins: %s", err)
 		}

cmd/tivan/tivan.go

@@ -95,7 +95,8 @@ func main() {
 	log.Printf("Loaded plugins: %s", strings.Join(plugins, " "))
 	if ag.Debug {
 		log.Printf("Debug: enabled")
-		log.Printf("Agent Config: %#v", ag)
+		log.Printf("Agent Config: Interval:%s, Debug:%#v, Hostname:%#v\n",
+			ag.Interval, ag.Debug, ag.Hostname)
 	}
 
 	if config.URL != "" {

config.go

@@ -36,6 +36,7 @@ type Config struct {
 	UserAgent string
 	Tags      map[string]string
 
+	agent   *ast.Table
 	plugins map[string]*ast.Table
 }
 
@@ -43,14 +44,98 @@ func (c *Config) Plugins() map[string]*ast.Table {
 	return c.plugins
 }
 
-func (c *Config) Apply(name string, v interface{}) error {
-	if tbl, ok := c.plugins[name]; ok {
-		return toml.UnmarshalTable(tbl, v)
+type ConfiguredPlugin struct {
+	Name string
+
+	Drop []string
+	Pass []string
+
+	Interval time.Duration
+}
+
+func (cp *ConfiguredPlugin) ShouldPass(name string) bool {
+	if cp.Pass != nil {
+		for _, pat := range cp.Pass {
+			if strings.HasPrefix(name, pat) {
+				return true
+			}
+		}
+
+		return false
+	}
+
+	if cp.Drop != nil {
+		for _, pat := range cp.Drop {
+			if strings.HasPrefix(name, pat) {
+				return false
+			}
+		}
+
+		return true
+	}
+
+	return true
+}
+
+func (c *Config) ApplyAgent(v interface{}) error {
+	if c.agent != nil {
+		return toml.UnmarshalTable(c.agent, v)
 	}
 
 	return nil
 }
 
+func (c *Config) ApplyPlugin(name string, v interface{}) (*ConfiguredPlugin, error) {
+	cp := &ConfiguredPlugin{Name: name}
+
+	if tbl, ok := c.plugins[name]; ok {
+
+		if node, ok := tbl.Fields["pass"]; ok {
+			if kv, ok := node.(*ast.KeyValue); ok {
+				if ary, ok := kv.Value.(*ast.Array); ok {
+					for _, elem := range ary.Value {
+						if str, ok := elem.(*ast.String); ok {
+							cp.Pass = append(cp.Pass, str.Value)
+						}
+					}
+				}
+			}
+		}
+
+		if node, ok := tbl.Fields["drop"]; ok {
+			if kv, ok := node.(*ast.KeyValue); ok {
+				if ary, ok := kv.Value.(*ast.Array); ok {
+					for _, elem := range ary.Value {
+						if str, ok := elem.(*ast.String); ok {
+							cp.Drop = append(cp.Drop, str.Value)
+						}
+					}
+				}
+			}
+		}
+
+		if node, ok := tbl.Fields["interval"]; ok {
+			if kv, ok := node.(*ast.KeyValue); ok {
+				if str, ok := kv.Value.(*ast.String); ok {
+					dur, err := time.ParseDuration(str.Value)
+					if err != nil {
+						return nil, err
+					}
+
+					cp.Interval = dur
+				}
+			}
+		}
+
+		delete(tbl.Fields, "drop")
+		delete(tbl.Fields, "pass")
+		delete(tbl.Fields, "interval")
+		return cp, toml.UnmarshalTable(tbl, v)
+	}
+
+	return cp, nil
+}
+
 func (c *Config) PluginsDeclared() []string {
 	var plugins []string
 
@@ -90,12 +175,15 @@ func LoadConfig(path string) (*Config, error) {
 			return nil, ErrInvalidConfig
 		}
 
-		if name == "influxdb" {
+		switch name {
+		case "influxdb":
 			err := toml.UnmarshalTable(subtbl, c)
 			if err != nil {
 				return nil, err
 			}
-		} else {
+		case "agent":
+			c.agent = subtbl
+		default:
 			c.plugins[name] = subtbl
 		}
 	}
@@ -154,6 +242,12 @@ var header = `# Tivan configuration
 # [influxdb.tags]
 # dc = "us-east-1"
 
+# Configuration for tivan itself
+# [agent]
+# interval = "10s"
+# debug = false
+# hostname = "prod3241"
+
 # PLUGINS
 
 `