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scripts.go
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scripts.go
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package rboot
import (
"fmt"
"io/ioutil"
"os"
"os/exec"
"path/filepath"
"strings"
"github.com/sirupsen/logrus"
"gopkg.in/yaml.v2"
)
const defaultScriptDir = "scripts"
var scripts = make(map[string]script)
type script struct {
Name string `yaml:"name"`
Ruleset map[string]string `yaml:"ruleset"`
Usage map[string]string `yaml:"usage"`
Description string `yaml:"description"`
Version string `yaml:"version"`
Command []command `yaml:"command"`
}
type command struct {
Dir string `yaml:"dir"`
Cmd []string `yaml:"cmd"`
}
// 设置脚本
func setupScript(bot *Robot, in *Message) (msg []*Message) {
rule := in.Header.Get("rule")
scp := scripts[rule]
for _, sc := range scp.Command {
for _, c := range sc.Cmd {
args := strings.Split(c, " ")
out, err := runCommand(sc.Dir, args[0], args[1:]...)
if err != nil {
return NewMessages(err.Error())
}
msg = append(msg, NewMessage(out, in.From))
}
}
return msg
}
// 注册脚本
func registerScript() error {
scpDir := os.Getenv("SCRIPT_DIR")
if scpDir == "" {
scpDir = defaultScriptDir
}
scps, err := allScripts(scpDir)
if err != nil {
return err
}
if len(scps) <= 0 {
return fmt.Errorf("no script found")
}
for _, scp := range scps {
if len(scp.Command) <= 0 {
continue
}
// 注册插件到脚本
RegisterPlugin(scp.Name, Plugin{
Action: setupScript,
Ruleset: scp.Ruleset,
Usage: scp.Usage,
Description: scp.Description,
})
scripts[scp.Name] = scp
}
return nil
}
func allScripts(dir string) ([]script, error) {
scpFiles, err := filepath.Glob(filepath.Join(dir, "*.yml"))
if err != nil {
return nil, err
}
var scps = make([]script, 0)
for _, file := range scpFiles {
data, err := loadScript(file)
if err != nil {
continue
}
var scp = script{}
err = yaml.Unmarshal(data, &scp)
if err != nil {
continue
}
scps = append(scps, scp)
}
return scps, nil
}
func loadScript(file string) ([]byte, error) {
_, err := os.Stat(file)
if os.IsNotExist(err) {
return nil, err
}
fi, err := os.Open(file)
if err != nil {
return nil, err
}
defer fi.Close()
return ioutil.ReadAll(fi)
}
func runCommand(dir, command string, args ...string) (string, error) {
cmd := exec.Command(command, args...)
if dir != "" {
cmd.Dir = dir
}
output, err := cmd.CombinedOutput()
if err != nil {
return "", fmt.Errorf("run script error: %v - %q", err, string(output))
}
return string(output), nil
}
func init() {
err := registerScript()
if err != nil {
logrus.WithFields(logrus.Fields{
"mod": `rboot`,
}).Errorf("register script err: %v", err)
}
RegisterPlugin("refresh_script", Plugin{
Action: func(bot *Robot, incoming *Message) []*Message {
err := registerScript()
if err != nil {
logrus.WithFields(logrus.Fields{
"mod": `rboot`,
}).Error(err)
return NewMessages(err.Error(), incoming.From)
}
return NewMessages("更新成功!", incoming.From)
},
Ruleset: map[string]string{
"refresh": `^!refresh scripts`,
},
Usage: map[string]string{
"!refresh scripts": "重新加载插件YML配置文件",
},
Description: "当插件配置有变化时更新插件YML配置文件",
})
}