mirror of
https://github.com/tarampampam/error-pages.git
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104 lines
3.0 KiB
Go
104 lines
3.0 KiB
Go
package cli
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import (
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"context"
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"fmt"
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"runtime"
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"strings"
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"github.com/urfave/cli/v2"
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"github.com/tarampampam/error-pages/internal/checkers"
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"github.com/tarampampam/error-pages/internal/cli/build"
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"github.com/tarampampam/error-pages/internal/cli/healthcheck"
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"github.com/tarampampam/error-pages/internal/cli/serve"
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"github.com/tarampampam/error-pages/internal/env"
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"github.com/tarampampam/error-pages/internal/logger"
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"github.com/tarampampam/error-pages/internal/version"
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)
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// NewApp creates new console application.
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func NewApp(appName string) *cli.App { //nolint:funlen
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const (
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logLevelFlagName = "log-level"
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logFormatFlagName = "log-format"
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verboseFlagName = "verbose"
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debugFlagName = "debug"
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logJSONFlagName = "log-json"
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defaultLogLevel = logger.InfoLevel
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defaultLogFormat = logger.ConsoleFormat
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)
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// create "default" logger (will be overwritten later with customized)
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var log, _ = logger.New(defaultLogLevel, defaultLogFormat) // error will never occurs
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return &cli.App{
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Usage: appName,
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Before: func(c *cli.Context) (err error) {
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_ = log.Sync() // sync previous logger instance
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var logLevel, logFormat = defaultLogLevel, defaultLogFormat //nolint:ineffassign
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if c.Bool(verboseFlagName) || c.Bool(debugFlagName) {
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logLevel = logger.DebugLevel
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} else {
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// parse logging level
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if logLevel, err = logger.ParseLevel(c.String(logLevelFlagName)); err != nil {
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return err
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}
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}
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if c.Bool(logJSONFlagName) {
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logFormat = logger.JSONFormat
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} else {
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// parse logging format
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if logFormat, err = logger.ParseFormat(c.String(logFormatFlagName)); err != nil {
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return err
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}
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}
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configured, err := logger.New(logLevel, logFormat) // create new logger instance
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if err != nil {
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return err
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}
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*log = *configured // replace "default" logger with customized
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return nil
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},
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Commands: []*cli.Command{
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healthcheck.NewCommand(checkers.NewHealthChecker(context.TODO())),
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build.NewCommand(log),
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serve.NewCommand(log),
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},
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Version: fmt.Sprintf("%s (%s)", version.Version(), runtime.Version()),
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Flags: []cli.Flag{ // global flags
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&cli.BoolFlag{ // kept for backward compatibility
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Name: verboseFlagName,
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Usage: "verbose output (DEPRECATED FLAG)",
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},
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&cli.BoolFlag{ // kept for backward compatibility
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Name: debugFlagName,
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Usage: "debug output (DEPRECATED FLAG)",
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},
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&cli.BoolFlag{ // kept for backward compatibility
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Name: logJSONFlagName,
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Usage: "logs in JSON format (DEPRECATED FLAG)",
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},
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&cli.StringFlag{
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Name: logLevelFlagName,
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Value: defaultLogLevel.String(),
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Usage: "logging level (`" + strings.Join(logger.LevelStrings(), "/") + "`)",
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EnvVars: []string{env.LogLevel.String()},
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},
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&cli.StringFlag{
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Name: logFormatFlagName,
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Value: defaultLogFormat.String(),
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Usage: "logging format (`" + strings.Join(logger.FormatStrings(), "/") + "`)",
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EnvVars: []string{env.LogFormat.String()},
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},
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},
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}
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}
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