feat: report max memory usage of process

Author: angristan

exec.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"net/http"
 	"os/exec"
+	"syscall"
 	"time"
 
 	"github.com/labstack/echo/v4"
@@ -27,6 +28,7 @@ func execCmd(c echo.Context, program string, arg ...string) error {
 			Stdout:       execStdOut.String(),
 			Stderr:       execStdErr.String(),
 			ExecDuration: elapsed.Microseconds(),
+			MemUsage:     cmd.ProcessState.SysUsage().(*syscall.Rusage).Maxrss,
 		})
 	}
 
@@ -35,5 +37,6 @@ func execCmd(c echo.Context, program string, arg ...string) error {
 		Stdout:       execStdOut.String(),
 		Stderr:       execStdErr.String(),
 		ExecDuration: elapsed.Microseconds(),
+		MemUsage:     cmd.ProcessState.SysUsage().(*syscall.Rusage).Maxrss,
 	})
 }

main.go

@@ -31,6 +31,7 @@ type (
 		Stdout       string `json:"stdout"`
 		Stderr       string `json:"stderr"`
 		ExecDuration int64  `json:"exec_duration"`
+		MemUsage     int64  `json:"mem_usage"`
 	}
 )