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