micro/runtime/process/os/os.go

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// Package os runs processes locally
package os
import (
"fmt"
"os"
"os/exec"
"strconv"
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"github.com/micro/go-micro/runtime/process"
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)
type Process struct {
}
func (p *Process) Exec(exe *process.Executable) error {
cmd := exec.Command(exe.Binary.Path)
return cmd.Run()
}
func (p *Process) Fork(exe *process.Executable) (*process.PID, error) {
cmd := exec.Command(exe.Binary.Path)
if err := cmd.Start(); err != nil {
return nil, err
}
in, err := cmd.StdinPipe()
if err != nil {
return nil, err
}
out, err := cmd.StdoutPipe()
if err != nil {
return nil, err
}
er, err := cmd.StderrPipe()
if err != nil {
return nil, err
}
return &process.PID{
ID: fmt.Sprintf("%d", cmd.Process.Pid),
Input: in,
Output: out,
Error: er,
}, nil
}
func (p *Process) Kill(pid *process.PID) error {
id, err := strconv.Atoi(pid.ID)
if err != nil {
return err
}
pr, err := os.FindProcess(id)
if err != nil {
return err
}
return pr.Kill()
}
func (p *Process) Wait(pid *process.PID) error {
id, err := strconv.Atoi(pid.ID)
if err != nil {
return err
}
pr, err := os.FindProcess(id)
if err != nil {
return err
}
ps, err := pr.Wait()
if err != nil {
return err
}
if ps.Success() {
return nil
}
return fmt.Errorf(ps.String())
}
func NewProcess(opts ...process.Option) process.Process {
return &Process{}
}