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package factory
import (
"context"
"fmt"
"log"
"os"
"os/exec"
"strings"
"github.com/fatih/color"
"github.com/spiral/endure/errors"
"github.com/spiral/roadrunner/v2"
"github.com/spiral/roadrunner/v2/plugins/config"
"github.com/spiral/roadrunner/v2/util"
)
const ServiceName = "app"
type Env map[string]string
// AppFactory creates workers for the application.
type AppFactory interface {
NewCmdFactory(env Env) (func() *exec.Cmd, error)
NewWorker(ctx context.Context, env Env) (roadrunner.WorkerBase, error)
NewWorkerPool(ctx context.Context, opt roadrunner.Config, env Env) (roadrunner.Pool, error)
}
// App manages worker
type App struct {
cfg Config
factory roadrunner.Factory
}
// Init application provider.
func (app *App) Init(cfg config.Provider) error {
err := cfg.UnmarshalKey(ServiceName, &app.cfg)
if err != nil {
return err
}
app.cfg.InitDefaults()
return nil
}
// Name contains service name.
func (app *App) Name() string {
return ServiceName
}
func (app *App) Serve() chan error {
errCh := make(chan error, 1)
var err error
app.factory, err = app.initFactory()
if err != nil {
errCh <- errors.E(errors.Op("init factory"), err)
}
return errCh
}
func (app *App) Stop() error {
if app.factory == nil {
return nil
}
return app.factory.Close(context.Background())
}
func (app *App) NewCmdFactory(env Env) (func() *exec.Cmd, error) {
var cmdArgs []string
// create command according to the config
cmdArgs = append(cmdArgs, strings.Split(app.cfg.Command, " ")...)
return func() *exec.Cmd {
cmd := exec.Command(cmdArgs[0], cmdArgs[1:]...)
util.IsolateProcess(cmd)
// if user is not empty, and OS is linux or macos
// execute php worker from that particular user
if app.cfg.User != "" {
err := util.ExecuteFromUser(cmd, app.cfg.User)
if err != nil {
return nil
}
}
cmd.Env = app.setEnv(env)
return cmd
}, nil
}
func (app *App) NewWorker(ctx context.Context, env Env) (roadrunner.WorkerBase, error) {
spawnCmd, err := app.NewCmdFactory(env)
if err != nil {
return nil, err
}
return app.factory.SpawnWorkerWithContext(ctx, spawnCmd())
}
func (app *App) NewWorkerPool(ctx context.Context, opt roadrunner.Config, env Env) (roadrunner.Pool, error) {
spawnCmd, err := app.NewCmdFactory(env)
if err != nil {
return nil, err
}
p, err := roadrunner.NewPool(ctx, spawnCmd, app.factory, opt)
if err != nil {
return nil, err
}
p.AddListener(func(event interface{}) {
if we, ok := event.(roadrunner.WorkerEvent); ok {
if we.Event == roadrunner.EventWorkerLog {
log.Print(color.YellowString(string(we.Payload.([]byte))))
}
}
})
return p, nil
}
func (app *App) initFactory() (roadrunner.Factory, error) {
if app.cfg.Relay == "" || app.cfg.Relay == "pipes" {
return roadrunner.NewPipeFactory(), nil
}
dsn := strings.Split(app.cfg.Relay, "://")
if len(dsn) != 2 {
return nil, errors.E(errors.Str("invalid DSN (tcp://:6001, unix://file.sock)"))
}
lsn, err := util.CreateListener(app.cfg.Relay)
if err != nil {
return nil, err
}
switch dsn[0] {
// sockets group
case "unix":
return roadrunner.NewSocketServer(lsn, app.cfg.RelayTimeout), nil
case "tcp":
return roadrunner.NewSocketServer(lsn, app.cfg.RelayTimeout), nil
default:
return nil, errors.E(errors.Str("invalid DSN (tcp://:6001, unix://file.sock)"))
}
}
func (app *App) setEnv(e Env) []string {
env := append(os.Environ(), fmt.Sprintf("RR_RELAY=%s", app.cfg.Relay))
for k, v := range e {
env = append(env, fmt.Sprintf("%s=%s", strings.ToUpper(k), v))
}
return env
}
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