1 files changed, 134 insertions, 0 deletions
diff --git a/plugins/service/process.go b/plugins/service/process.go
new file mode 100644
index 00000000..449f005e
--- /dev/null
+++ b/plugins/service/process.go
@@ -0,0 +1,134 @@
+package service
+
+import (
+	"os/exec"
+	"strings"
+	"sync"
+	"syscall"
+	"time"
+	"unsafe"
+
+	"github.com/spiral/errors"
+	"github.com/spiral/roadrunner/v2/plugins/logger"
+)
+
+// Process structure contains an information about process, restart information, log, errors, etc
+type Process struct {
+	sync.Mutex
+	// command to execute
+	command *exec.Cmd
+	rawCmd  string
+
+	errCh chan error
+	log   logger.Logger
+
+	ExecTimeout      time.Duration
+	RestartAfterExit bool
+	RestartDelay     time.Duration
+
+	//
+	startTime time.Time
+	stopCh    chan struct{}
+}
+
+func NewFatProcess(restartAfterExit bool, execTimeout, restartDelay time.Duration, command string, l logger.Logger, errCh chan error) *Process {
+	p := &Process{
+		rawCmd:           command,
+		RestartDelay:     restartDelay,
+		ExecTimeout:      execTimeout,
+		RestartAfterExit: restartAfterExit,
+		errCh:            errCh,
+		stopCh:           make(chan struct{}),
+		log:              l,
+	}
+	// stderr redirect to the logger
+	return p
+}
+
+// write message to the log (stderr)
+func (p *Process) Write(b []byte) (int, error) {
+	p.log.Info(toString(b))
+	return len(b), nil
+}
+
+func (p *Process) start() {
+	p.Lock()
+	defer p.Unlock()
+
+	const op = errors.Op("processor_start")
+
+	// cmdArgs contain command arguments if the command in form of: php <command> or ls <command> -i -b
+	p.createProcess()
+
+	err := p.command.Start()
+	if err != nil {
+		p.errCh <- errors.E(op, err)
+		return
+	}
+
+	go p.wait()
+	go p.execHandler()
+	// save start time
+	p.startTime = time.Now()
+}
+
+func (p *Process) createProcess() {
+	var cmdArgs []string
+	cmdArgs = append(cmdArgs, strings.Split(p.rawCmd, " ")...)
+	if len(cmdArgs) < 2 {
+		p.command = exec.Command(p.rawCmd) //nolint:gosec
+	} else {
+		p.command = exec.Command(cmdArgs[0], cmdArgs[1:]...) //nolint:gosec
+	}
+	p.command.Stderr = p
+}
+
+func (p *Process) wait() {
+	// Wait error doesn't matter here
+	_ = p.command.Wait()
+
+	// wait for restart delay
+	if p.RestartAfterExit {
+		// wait for the delay
+		time.Sleep(p.RestartDelay)
+		// and start command again
+		p.start()
+	}
+}
+
+// stop can be only sent by the Endure when plugin stopped
+func (p *Process) stop() {
+	p.stopCh <- struct{}{}
+}
+
+func (p *Process) execHandler() {
+	tt := time.NewTicker(time.Second)
+	for {
+		select {
+		case <-tt.C:
+			p.Lock()
+			// if the exec timeout is set
+			if p.ExecTimeout != 0 {
+				// check the running time for the script
+				if time.Now().After(p.startTime.Add(p.ExecTimeout)) {
+					err := p.command.Process.Signal(syscall.SIGINT)
+					if err != nil {
+						_ = p.command.Process.Signal(syscall.SIGKILL)
+					}
+				}
+			}
+			p.Unlock()
+		case <-p.stopCh:
+			err := p.command.Process.Signal(syscall.SIGINT)
+			if err != nil {
+				_ = p.command.Process.Signal(syscall.SIGKILL)
+			}
+			tt.Stop()
+			return
+		}
+	}
+}
+
+func toString(data []byte) string {
+	return *(*string)(unsafe.Pointer(&data))
+}