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cmd.go
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cmd.go
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package cmd
import (
"context"
"fmt"
"github.com/alexfalkowski/go-service/os"
"github.com/alexfalkowski/go-service/time"
"github.com/spf13/cobra"
"go.uber.org/fx"
)
// Command for application.
type Command struct {
root *cobra.Command
}
// New command.
func New() *Command {
name := os.ExecutableName()
root := &cobra.Command{
Use: name,
Short: name,
Long: name,
SilenceUsage: true,
}
return &Command{root: root}
}
// AddVersion to root.
func (c *Command) AddVersion(version string) *cobra.Command {
cmd := &cobra.Command{
Use: "version",
Short: "The application version",
Long: "The application version",
SilenceUsage: true,
RunE: func(command *cobra.Command, args []string) error {
_, err := fmt.Println(version)
return err
},
}
c.root.AddCommand(cmd)
return cmd
}
// AddServer to the command.
func (c *Command) AddServer(opts []fx.Option) *cobra.Command {
return c.AddServerCommand("server", "Start the server.", opts)
}
// AddWorker to the command.
func (c *Command) AddWorker(opts []fx.Option) *cobra.Command {
return c.AddServerCommand("worker", "Start the worker.", opts)
}
// AddClient to the command.
func (c *Command) AddClient(opts []fx.Option) *cobra.Command {
return c.AddClientCommand("client", "Start the client.", opts)
}
// AddServerCommand to root.
func (c *Command) AddServerCommand(name, description string, opts []fx.Option) *cobra.Command {
cmd := &cobra.Command{
Use: name,
Short: description,
Long: description,
SilenceUsage: true,
RunE: func(command *cobra.Command, args []string) error {
return RunServer(args, opts)
},
}
c.root.AddCommand(cmd)
return cmd
}
// AddClientCommand to root.
func (c *Command) AddClientCommand(name, description string, opts []fx.Option) *cobra.Command {
cmd := &cobra.Command{
Use: name,
Short: description,
Long: description,
SilenceUsage: true,
RunE: func(command *cobra.Command, args []string) error {
return RunClient(args, opts)
},
}
c.root.AddCommand(cmd)
return cmd
}
// Run the command with a an arg.
func (c *Command) RunWithArg(arg string) error {
c.root.SetArgs([]string{arg})
return c.root.Execute()
}
// Run the command.
func (c *Command) Run() error {
return c.root.Execute()
}
// RunServer with args and a timeout.
func RunServer(args []string, opts []fx.Option) error {
app := fx.New(opts...)
done := app.Done()
startCtx, cancel := context.WithTimeout(context.Background(), time.Timeout)
defer cancel()
if err := app.Start(startCtx); err != nil {
return err
}
<-done
stopCtx, cancel := context.WithTimeout(context.Background(), time.Timeout)
defer cancel()
return app.Stop(stopCtx)
}
// RunClient with args and a timeout.
func RunClient(args []string, opts []fx.Option) error {
app := fx.New(opts...)
startCtx, cancel := context.WithTimeout(context.Background(), time.Timeout)
defer cancel()
if err := app.Start(startCtx); err != nil {
return err
}
stopCtx, cancel := context.WithTimeout(context.Background(), time.Timeout)
defer cancel()
return app.Stop(stopCtx)
}