mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-26 01:22:04 +00:00
124 lines
3.6 KiB
Go
124 lines
3.6 KiB
Go
package cmd
|
|
|
|
import (
|
|
"fmt"
|
|
"github.com/ClickHouse/clickhouse-diagnostics/cmd/params"
|
|
"github.com/ClickHouse/clickhouse-diagnostics/internal/collectors"
|
|
"github.com/ClickHouse/clickhouse-diagnostics/internal/outputs"
|
|
"github.com/ClickHouse/clickhouse-diagnostics/internal/platform/config"
|
|
"github.com/rs/zerolog/log"
|
|
"github.com/spf13/cobra"
|
|
"os"
|
|
)
|
|
|
|
var cHelp = params.StringOptionsVar{
|
|
Options: collectors.GetCollectorNames(false),
|
|
Value: "",
|
|
}
|
|
var oHelp = params.StringOptionsVar{
|
|
Options: outputs.GetOutputNames(),
|
|
Value: "",
|
|
}
|
|
|
|
func init() {
|
|
helpCmd.Flags().VarP(&cHelp, "collector", "c", "Specify collector to get description of available flags")
|
|
helpCmd.Flags().VarP(&oHelp, "output", "o", "Specify output to get description of available flags")
|
|
helpCmd.SetUsageTemplate(`Usage:{{if .Runnable}}
|
|
{{.UseLine}}{{end}}{{if .HasExample}}
|
|
|
|
Examples:
|
|
{{.Example}}{{end}}
|
|
|
|
Available Commands:{{range .Parent.Commands}}{{if (or .IsAvailableCommand (eq .Name "help"))}}
|
|
{{rpad .Name .NamePadding }} {{.Short}}{{end}}{{end}}{{if .HasAvailableLocalFlags}}
|
|
|
|
Flags:
|
|
{{.LocalFlags.FlagUsages | trimTrailingWhitespaces}}{{end}}
|
|
|
|
Alternatively use "{{.CommandPath}} [command] --help" for more information about a command.
|
|
`)
|
|
helpCmd.SetFlagErrorFunc(handleFlagErrors)
|
|
|
|
}
|
|
|
|
var helpCmd = &cobra.Command{
|
|
Use: "help [command]",
|
|
Short: "Help about any command, collector or output",
|
|
Long: `Help provides help for any command, collector or output in the application.`,
|
|
Example: fmt.Sprintf(`%[1]v help collect
|
|
%[1]v help --collector=config
|
|
%[1]v help --output=simple`, rootCmd.Name()),
|
|
Run: func(c *cobra.Command, args []string) {
|
|
if len(args) != 0 {
|
|
//find the command on which help is requested
|
|
cmd, _, e := c.Root().Find(args)
|
|
if cmd == nil || e != nil {
|
|
c.Printf("Unknown help topic %#q\n", args)
|
|
cobra.CheckErr(c.Root().Usage())
|
|
} else {
|
|
cmd.InitDefaultHelpFlag()
|
|
cobra.CheckErr(cmd.Help())
|
|
}
|
|
return
|
|
}
|
|
if cHelp.Value != "" && oHelp.Value != "" {
|
|
log.Error().Msg("Specify either --collector or --output not both")
|
|
_ = c.Help()
|
|
os.Exit(1)
|
|
}
|
|
if cHelp.Value != "" {
|
|
collector, err := collectors.GetCollectorByName(cHelp.Value)
|
|
if err != nil {
|
|
log.Fatal().Err(err).Msgf("Unable to initialize collector %s", cHelp.Value)
|
|
}
|
|
configHelp(collector.Configuration(), "collector", cHelp.Value, collector.Description())
|
|
} else if oHelp.Value != "" {
|
|
output, err := outputs.GetOutputByName(oHelp.Value)
|
|
if err != nil {
|
|
log.Fatal().Err(err).Msgf("Unable to initialize output %s", oHelp.Value)
|
|
}
|
|
configHelp(output.Configuration(), "output", oHelp.Value, output.Description())
|
|
} else {
|
|
_ = c.Help()
|
|
}
|
|
os.Exit(0)
|
|
},
|
|
}
|
|
|
|
func configHelp(conf config.Configuration, componentType, name, description string) {
|
|
|
|
paramMap := params.NewParamMap(map[string]config.Configuration{
|
|
name: conf,
|
|
})
|
|
tempHelpCmd := &cobra.Command{
|
|
Use: fmt.Sprintf("--%s=%s", componentType, name),
|
|
Short: fmt.Sprintf("Help about the %s collector", name),
|
|
Long: description,
|
|
SilenceErrors: true,
|
|
Run: func(c *cobra.Command, args []string) {
|
|
_ = c.Help()
|
|
},
|
|
}
|
|
params.AddParamMapToCmd(paramMap, tempHelpCmd, componentType, false)
|
|
// this is workaround to hide the help flag
|
|
tempHelpCmd.Flags().BoolP("help", "h", false, "Dummy help")
|
|
tempHelpCmd.Flags().Lookup("help").Hidden = true
|
|
tempHelpCmd.SetUsageTemplate(`
|
|
{{.Long}}
|
|
|
|
Usage:{{if .Runnable}}
|
|
{{.UseLine}}{{end}}{{if .HasExample}}
|
|
|
|
Examples:
|
|
{{.Example}}{{end}}
|
|
|
|
Flags:{{if .HasAvailableLocalFlags}}
|
|
{{.LocalFlags.FlagUsages | trimTrailingWhitespaces}}{{else}}
|
|
|
|
No configuration flags available
|
|
{{end}}
|
|
`)
|
|
|
|
_ = tempHelpCmd.Execute()
|
|
}
|