WIP
This commit is contained in:
Daniel
@@ -1,41 +1,75 @@
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package main
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import (
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"errors"
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"flag"
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"fmt"
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"io"
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"log/slog"
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"os"
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"os/signal"
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"runtime"
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"runtime/pprof"
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"syscall"
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"time"
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"github.com/safing/portmaster/base/api"
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"github.com/safing/portmaster/base/info"
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"github.com/safing/portmaster/base/log"
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"github.com/safing/portmaster/base/metrics"
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"github.com/safing/portmaster/service/mgr"
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"github.com/safing/portmaster/cmds/cmdbase"
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"github.com/safing/portmaster/service"
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"github.com/safing/portmaster/service/configure"
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"github.com/safing/portmaster/service/updates"
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"github.com/safing/portmaster/spn"
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"github.com/safing/portmaster/spn/captain"
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"github.com/safing/portmaster/spn/conf"
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"github.com/safing/portmaster/spn/sluice"
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"github.com/spf13/cobra"
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)
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var sigUSR1 = syscall.Signal(0xa)
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var (
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rootCmd = &cobra.Command{
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Use: "observation-hub",
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PersistentPreRun: initializeGlobals,
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Run: cmdbase.RunService,
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}
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binDir string
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dataDir string
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logToStdout bool
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logDir string
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logLevel string
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)
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func init() {
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// Add persisent flags for all commands.
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rootCmd.PersistentFlags().StringVar(&binDir, "bin-dir", "", "set directory for executable binaries (rw/ro)")
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rootCmd.PersistentFlags().StringVar(&dataDir, "data-dir", "", "set directory for variable data (rw)")
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// Add flags for service only.
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rootCmd.Flags().BoolVar(&logToStdout, "log-stdout", false, "log to stdout instead of file")
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rootCmd.Flags().StringVar(&logDir, "log-dir", "", "set directory for logs")
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rootCmd.Flags().StringVar(&logLevel, "log", "", "set log level to [trace|debug|info|warning|error|critical]")
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rootCmd.Flags().BoolVar(&cmdbase.PrintStackOnExit, "print-stack-on-exit", false, "prints the stack before of shutting down")
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rootCmd.Flags().BoolVar(&cmdbase.RebootOnRestart, "reboot-on-restart", false, "reboot server instead of service restart")
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// Add other commands.
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rootCmd.AddCommand(cmdbase.VersionCmd)
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rootCmd.AddCommand(cmdbase.UpdateCmd)
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}
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func main() {
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flag.Parse()
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// Add Go's default flag set.
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// TODO: Move flags throughout Portmaster to here and add their values to the service config.
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rootCmd.Flags().AddGoFlagSet(flag.CommandLine)
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if err := rootCmd.Execute(); err != nil {
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fmt.Println(err)
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os.Exit(1)
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}
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}
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func initializeGlobals(cmd *cobra.Command, args []string) {
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// Set version info.
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info.Set("SPN Observation Hub", "", "GPLv3")
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// Configure metrics.
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_ = metrics.SetNamespace("observer")
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// Configure user agent and updates.
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// Configure user agent.
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updates.UserAgent = fmt.Sprintf("SPN Observation Hub (%s %s)", runtime.GOOS, runtime.GOARCH)
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// Configure SPN mode.
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@@ -46,129 +80,37 @@ func main() {
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sluice.EnableListener = false
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api.EnableServer = false
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// Start logger with default log level.
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_ = log.Start(log.WarningLevel)
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// Configure service.
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cmdbase.SvcFactory = func(svcCfg *service.ServiceConfig) (cmdbase.ServiceInstance, error) {
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svc, err := service.New(svcCfg)
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// Create instance.
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var execCmdLine bool
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instance, err := spn.New()
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switch {
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case err == nil:
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// Continue
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case errors.Is(err, mgr.ErrExecuteCmdLineOp):
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execCmdLine = true
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default:
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fmt.Printf("error creating an instance: %s\n", err)
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os.Exit(2)
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}
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// Add additional modules.
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observer, err := New(instance)
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if err != nil {
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fmt.Printf("error creating an instance: create observer module: %s\n", err)
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os.Exit(2)
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}
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instance.AddModule(observer)
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_, err = NewApprise(instance)
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if err != nil {
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fmt.Printf("error creating an instance: create apprise module: %s\n", err)
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os.Exit(2)
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}
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instance.AddModule(observer)
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// FIXME: Use service?
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// Execute command line operation, if requested or available.
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switch {
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case !execCmdLine:
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// Run service.
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case instance.CommandLineOperation == nil:
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fmt.Println("command line operation execution requested, but not set")
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os.Exit(3)
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default:
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// Run the function and exit.
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err = instance.CommandLineOperation()
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// Add additional modules.
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observer, err := New(svc)
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if err != nil {
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fmt.Fprintf(os.Stderr, "command line operation failed: %s\n", err)
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os.Exit(3)
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fmt.Printf("error creating an instance: create observer module: %s\n", err)
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os.Exit(2)
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}
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os.Exit(0)
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}
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// Start
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go func() {
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err = instance.Start()
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svc.AddModule(observer)
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_, err = NewApprise(svc)
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if err != nil {
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fmt.Printf("instance start failed: %s\n", err)
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os.Exit(1)
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fmt.Printf("error creating an instance: create apprise module: %s\n", err)
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os.Exit(2)
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}
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}()
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svc.AddModule(observer)
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// Wait for signal.
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signalCh := make(chan os.Signal, 1)
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signal.Notify(
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signalCh,
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os.Interrupt,
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syscall.SIGHUP,
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syscall.SIGINT,
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syscall.SIGTERM,
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syscall.SIGQUIT,
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sigUSR1,
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)
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select {
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case sig := <-signalCh:
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// Only print and continue to wait if SIGUSR1
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if sig == sigUSR1 {
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printStackTo(os.Stderr, "PRINTING STACK ON REQUEST")
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} else {
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fmt.Println(" <INTERRUPT>") // CLI output.
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slog.Warn("program was interrupted, stopping")
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}
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case <-instance.ShuttingDown():
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log.Shutdown()
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os.Exit(instance.ExitCode())
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return svc, err
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}
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cmdbase.SvcConfig = &service.ServiceConfig{
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BinDir: binDir,
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DataDir: dataDir,
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// Catch signals during shutdown.
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// Rapid unplanned disassembly after 5 interrupts.
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go func() {
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forceCnt := 5
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for {
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<-signalCh
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forceCnt--
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if forceCnt > 0 {
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fmt.Printf(" <INTERRUPT> again, but already shutting down - %d more to force\n", forceCnt)
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} else {
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printStackTo(os.Stderr, "PRINTING STACK ON FORCED EXIT")
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os.Exit(1)
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}
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}
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}()
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LogToStdout: logToStdout,
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LogDir: logDir,
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LogLevel: logLevel,
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// Rapid unplanned disassembly after 3 minutes.
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go func() {
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time.Sleep(3 * time.Minute)
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printStackTo(os.Stderr, "PRINTING STACK - TAKING TOO LONG FOR SHUTDOWN")
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os.Exit(1)
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}()
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// Stop instance.
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if err := instance.Stop(); err != nil {
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slog.Error("failed to stop", "err", err)
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}
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log.Shutdown()
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os.Exit(instance.ExitCode())
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}
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func printStackTo(writer io.Writer, msg string) {
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_, err := fmt.Fprintf(writer, "===== %s =====\n", msg)
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if err == nil {
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err = pprof.Lookup("goroutine").WriteTo(writer, 1)
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}
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if err != nil {
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slog.Error("failed to write stack trace", "err", err)
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BinariesIndexURLs: configure.DefaultStableBinaryIndexURLs,
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IntelIndexURLs: configure.DefaultIntelIndexURLs,
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VerifyBinaryUpdates: configure.BinarySigningTrustStore,
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VerifyIntelUpdates: configure.BinarySigningTrustStore,
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}
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}
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