initial commit

run.go

@@ -0,0 +1,95 @@
+package main
+
+import (
+	"encoding/json"
+	"errors"
+	"io"
+	"net"
+	"os"
+	"os/exec"
+	"path/filepath"
+)
+
+func runMap(conn net.Conn, instance string, objmap map[string]string) (int, error) {
+	program, has := objmap["package"]
+	if !has {
+		return 0, errors.New("a package is required")
+	}
+	arguments, has := objmap["arguments"]
+	if !has {
+		arguments = ""
+	}
+	target, has := objmap["target"]
+	if !has {
+		target = "run"
+	}
+	workdir, has := objmap["workdir"]
+	if !has {
+		return 0, errors.New("a workdir is required")
+	}
+	return run(conn, instance, program, arguments, target, workdir)
+}
+
+func run(conn net.Conn, instance string, program string, arguments string, target string, workdir string) (int, error) {
+	package_path, err := filepath.Abs(filepath.Join(instance, "apps", program))
+	if err != nil {
+		return 0, err
+	}
+
+	info_path, err := filepath.Abs(filepath.Join(package_path, "boundaries.json"))
+	if err != nil {
+		return 0, err
+	}
+	if exists, err := exists(info_path); !exists || err != nil {
+		return 0, errors.New("package " + program + " not found")
+	}
+
+	working_dir, err := filepath.Abs(workdir)
+	if err != nil {
+		return 0, err
+	}
+
+	infofile_content, err := os.ReadFile(info_path)
+	if err != nil {
+		return 0, err
+	}
+
+	var info map[string]interface{}
+	err = json.Unmarshal(infofile_content, &info)
+	if err != nil {
+		return 0, err
+	}
+
+	_, has := info["name"]
+	if !has {
+		return 0, errors.New("invalid boundaries.json file. name field not found")
+	}
+
+	command_interface, has := info["command"]
+	if !has {
+		return 0, errors.New("invalid boundaries.json file. command field not found")
+	}
+
+	commands := command_interface.(map[string]interface{})
+
+	command, has := commands[target]
+	if !has {
+		return 0, errors.New("target " + target + " not found")
+	}
+
+	command, err = filepath.Abs(filepath.Join(package_path, command.(string)))
+	if err != nil {
+		return 0, err
+	}
+	cmd := exec.Command("sh", "-c", command.(string)+" "+arguments)
+	cmd.Dir = working_dir
+	cmd.Stdout = io.MultiWriter(conn, os.Stdout)
+	cmd.Stderr = io.MultiWriter(conn, os.Stderr)
+	cmd.Stdin = conn
+	err = cmd.Run()
+	if err != nil {
+		return 0, err
+	}
+
+	return 0, nil
+}