pomerium/internal/zero/cmd/command.go
2023-11-27 10:36:25 -05:00

104 lines
2.4 KiB
Go

// Package cmd implements the pomerium zero command.
package cmd
import (
"context"
"errors"
"fmt"
"os"
"os/signal"
"path/filepath"
"syscall"
"github.com/mattn/go-isatty"
"github.com/rs/zerolog"
"github.com/rs/zerolog/log"
"github.com/pomerium/pomerium/internal/zero/controller"
)
// Run runs the pomerium zero command.
func Run(ctx context.Context, configFile string) error {
err := setupLogger()
if err != nil {
return fmt.Errorf("error setting up logger: %w", err)
}
token := getToken(configFile)
if token == "" {
return errors.New("no token provided")
}
bootstrapConfigFileName, err := getBootstrapConfigFileName()
if err != nil {
return fmt.Errorf("error getting bootstrap config path: %w", err)
}
return controller.Run(
withInterrupt(ctx),
controller.WithAPIToken(token),
controller.WithClusterAPIEndpoint(getClusterAPIEndpoint()),
controller.WithConnectAPIEndpoint(getConnectAPIEndpoint()),
controller.WithBootstrapConfigFileName(bootstrapConfigFileName),
)
}
// IsManagedMode returns true if Pomerium should start in managed mode using this command.
func IsManagedMode(configFile string) bool {
return getToken(configFile) != ""
}
func withInterrupt(ctx context.Context) context.Context {
ctx, cancel := context.WithCancel(ctx)
go func(ctx context.Context) {
ch := make(chan os.Signal, 2)
defer signal.Stop(ch)
signal.Notify(ch, os.Interrupt)
signal.Notify(ch, syscall.SIGTERM)
select {
case sig := <-ch:
log.Ctx(ctx).Info().Str("signal", sig.String()).Msg("quitting...")
case <-ctx.Done():
}
cancel()
}(ctx)
return ctx
}
func setupLogger() error {
if isatty.IsTerminal(os.Stdin.Fd()) {
log.Logger = log.Output(zerolog.ConsoleWriter{Out: os.Stderr})
} else {
log.Logger = zerolog.New(os.Stderr)
}
if rawLvl, ok := os.LookupEnv("LOG_LEVEL"); ok {
lvl, err := zerolog.ParseLevel(rawLvl)
if err != nil {
return err
}
log.Logger = log.Logger.Level(lvl)
} else {
log.Logger = log.Logger.Level(zerolog.InfoLevel)
}
// set the default context logger
zerolog.DefaultContextLogger = &log.Logger
return nil
}
func getBootstrapConfigFileName() (string, error) {
cacheDir, err := os.UserCacheDir()
if err != nil {
return "", err
}
dir := filepath.Join(cacheDir, "pomerium")
if err := os.MkdirAll(dir, 0o700); err != nil {
return "", fmt.Errorf("error creating cache directory: %w", err)
}
return filepath.Join(dir, "bootstrap.dat"), nil
}