77 lines
1.5 KiB
Go
77 lines
1.5 KiB
Go
package main
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import (
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"flag"
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"fmt"
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"os"
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"github.com/sirupsen/logrus"
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"github.com/slackhq/nebula"
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)
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// A version string that can be set with
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//
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// -ldflags "-X main.Build=SOMEVERSION"
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//
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// at compile-time.
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var Build string
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func main() {
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serviceFlag := flag.String("service", "", "Control the system service.")
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configPath := flag.String("config", "", "Path to either a file or directory to load configuration from")
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configTest := flag.Bool("test", false, "Test the config and print the end result. Non zero exit indicates a faulty config")
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printVersion := flag.Bool("version", false, "Print version")
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printUsage := flag.Bool("help", false, "Print command line usage")
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flag.Parse()
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if *printVersion {
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fmt.Printf("Version: %s\n", Build)
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os.Exit(0)
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}
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if *printUsage {
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flag.Usage()
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os.Exit(0)
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}
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if *serviceFlag != "" {
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doService(configPath, configTest, Build, serviceFlag)
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os.Exit(1)
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}
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if *configPath == "" {
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fmt.Println("-config flag must be set")
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flag.Usage()
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os.Exit(1)
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}
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l := logrus.New()
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l.Out = os.Stdout
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config := nebula.NewConfig(l)
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err := config.Load(*configPath)
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if err != nil {
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fmt.Printf("failed to load config: %s", err)
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os.Exit(1)
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}
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c, err := nebula.Main(config, *configTest, Build, l, nil)
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switch v := err.(type) {
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case nebula.ContextualError:
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v.Log(l)
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os.Exit(1)
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case error:
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l.WithError(err).Error("Failed to start")
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os.Exit(1)
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}
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if !*configTest {
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c.Start()
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c.ShutdownBlock()
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}
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os.Exit(0)
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}
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