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|
package app
import (
"context"
"fmt"
"os"
"os/exec"
"strings"
"github.com/spiral/errors"
"github.com/spiral/roadrunner/v2"
"github.com/spiral/roadrunner/v2/log"
"github.com/spiral/roadrunner/v2/plugins/config"
"github.com/spiral/roadrunner/v2/util"
)
const ServiceName = "app"
type Env map[string]string
// WorkerFactory creates workers for the application.
type WorkerFactory interface {
CmdFactory(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)
}
// Plugin manages worker
type Plugin struct {
cfg Config
log log.Logger
factory roadrunner.Factory
}
// Init application provider.
func (app *Plugin) Init(cfg config.Configurer, log log.Logger) error {
const op = errors.Op("Init")
err := cfg.UnmarshalKey(ServiceName, &app.cfg)
if err != nil {
return errors.E(op, errors.Init, err)
}
app.cfg.InitDefaults()
app.log = log
return nil
}
// Name contains service name.
func (app *Plugin) Name() string {
return ServiceName
}
func (app *Plugin) 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 *Plugin) Stop() error {
if app.factory == nil {
return nil
}
return app.factory.Close(context.Background())
}
// CmdFactory provides worker command factory assocated with given context.
func (app *Plugin) CmdFactory(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
}
// NewWorker issues new standalone worker.
func (app *Plugin) NewWorker(ctx context.Context, env Env) (roadrunner.WorkerBase, error) {
const op = errors.Op("new worker")
spawnCmd, err := app.CmdFactory(env)
if err != nil {
return nil, errors.E(op, err)
}
w, err := app.factory.SpawnWorkerWithContext(ctx, spawnCmd())
if err != nil {
return nil, errors.E(op, err)
}
w.AddListener(app.collectLogs)
return w, nil
}
// NewWorkerPool issues new worker pool.
func (app *Plugin) NewWorkerPool(ctx context.Context, opt roadrunner.Config, env Env) (roadrunner.Pool, error) {
spawnCmd, err := app.CmdFactory(env)
if err != nil {
return nil, err
}
p, err := roadrunner.NewPool(ctx, spawnCmd, app.factory, opt)
if err != nil {
return nil, err
}
p.AddListener(app.collectLogs)
return p, nil
}
// creates relay and worker factory.
func (app *Plugin) initFactory() (roadrunner.Factory, error) {
const op = errors.Op("network factory init")
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(op, errors.Network, errors.Str("invalid DSN (tcp://:6001, unix://file.sock)"))
}
lsn, err := util.CreateListener(app.cfg.Relay)
if err != nil {
return nil, errors.E(op, errors.Network, 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(op, errors.Network, errors.Str("invalid DSN (tcp://:6001, unix://file.sock)"))
}
}
func (app *Plugin) 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
}
func (app *Plugin) collectLogs(event interface{}) {
if we, ok := event.(roadrunner.WorkerEvent); ok {
switch we.Event {
case roadrunner.EventWorkerError:
app.log.Error(we.Payload.(error).Error(), "pid", we.Worker.Pid())
case roadrunner.EventWorkerLog:
app.log.Debug(strings.TrimRight(string(we.Payload.([]byte)), " \n\t"), "pid", we.Worker.Pid())
}
}
}
|
