108 lines
2.8 KiB
Go
108 lines
2.8 KiB
Go
package application
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import (
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"errors"
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"fmt"
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"log/slog"
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"os"
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"time"
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"github.com/spf13/cobra"
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"git.flexabyte.io/flexabyte/go-kit/semver"
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)
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type Config struct {
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Name string
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Title string
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Banner string
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Version Version
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EnableGracefulShutdown bool
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Logger *slog.Logger
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OverrideRunE func(cmd *cobra.Command, args []string) error
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PersistentPreRunE []func(cmd *cobra.Command, args []string) error // collection of PreRunE functions
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PersistentPostRunE []func(cmd *cobra.Command, args []string) error // collection of PostRunE functions
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ShutdownSignals []os.Signal
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ShutdownTimeout time.Duration
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SubCommands []Commander
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SubCommandInitializeFunc func(cmd *cobra.Command)
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ValidArgs []string
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}
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func (c Config) getRootCommand() (*cobra.Command, error) {
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var err error
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if err = c.Validate(); err != nil {
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return nil, err
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}
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var long string
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if c.Banner != "" {
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long = c.Banner + "\n" + c.Title
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} else {
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long = c.Title
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}
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cmd := &cobra.Command{
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Use: c.Name,
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Short: c.Title,
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Long: long,
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PersistentPreRunE: persistentPreRunFuncE,
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PersistentPostRunE: persistentPostRunFuncE,
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RunE: RunCatchFuncE,
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SilenceErrors: true,
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SilenceUsage: true,
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}
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if c.OverrideRunE != nil {
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cmd.RunE = c.OverrideRunE
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}
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for _, subcommand := range c.SubCommands {
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cmd.AddCommand(subcommand.Initialize(c.SubCommandInitializeFunc))
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}
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configureVersionFlag(cmd, c.Version) // Configure app for version information
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configureOutputFlags(cmd) // Configure verbosity
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configureLoggingFlags(cmd) // Configure logging
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cmd.PersistentFlags().SetNormalizeFunc(normalizeFunc) // normalize persistent flags
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return cmd, nil
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}
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func (c Config) RegisterCommand(cmd Commander, f func(*cobra.Command)) {
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appCmd.AddCommand(cmd.Initialize(f))
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}
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func (c Config) RegisterCommands(cmds []Commander, f func(*cobra.Command)) {
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for _, cmd := range cmds {
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appCmd.AddCommand(cmd.Initialize(f))
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}
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}
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func (c Config) RegisterPersistentPreRunE(f func(cmd *cobra.Command, args []string) error) {
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persistentPreRunE = append(persistentPreRunE, f)
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}
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func (c Config) RegisterPersistentPostRunE(f func(cmd *cobra.Command, args []string) error) {
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persistentPostRunE = append(persistentPostRunE, f)
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}
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func (c Config) Validate() error {
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if c.Name == "" {
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return errors.New("name is required")
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}
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if c.Title == "" {
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return errors.New("title is required")
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}
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if c.Logger == nil {
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return errors.New("logger is required")
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}
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var err error
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if _, err = semver.Parse(c.Version.Full); err != nil {
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return fmt.Errorf("invalid version: %s", c.Version)
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}
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return nil
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}
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