106 lines
1.6 KiB
Go
106 lines
1.6 KiB
Go
package main
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import (
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"bufio"
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"bytes"
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"io"
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"os"
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"path/filepath"
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"regexp"
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"strings"
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"time"
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yaml "gopkg.in/yaml.v2"
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"novit.nc/direktil/pkg/log"
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)
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var (
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reYamlStart = regexp.MustCompile("^#\\s+---\\s*$")
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)
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type UserService struct {
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Restart int
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Needs []string
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Provides []string
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}
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func loadUserServices() {
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retry:
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files, err := filepath.Glob("/etc/direktil/services/*")
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if err != nil {
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initLog.Taint(log.Error, "failed to load user services: ", err)
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time.Sleep(10 * time.Second)
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goto retry
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}
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for _, path := range files {
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path := path
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go func() {
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for {
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if err := loadUserService(path); err != nil {
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initLog.Taintf(log.Error, "failed to load %s: %v", path, err)
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time.Sleep(10 * time.Second)
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continue
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}
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break
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}
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}()
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}
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}
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func loadUserService(path string) error {
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f, err := os.Open(path)
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if err != nil {
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return err
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}
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defer f.Close()
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r := bufio.NewReader(f)
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yamlBuf := &bytes.Buffer{}
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inYaml := false
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for {
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line, err := r.ReadString('\n')
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if err == io.EOF {
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break
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} else if err != nil {
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return err
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}
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if inYaml {
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if !strings.HasPrefix(line, "# ") {
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break
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}
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yamlBuf.WriteString(line[2:])
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} else if reYamlStart.MatchString(line) {
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inYaml = true
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}
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}
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spec := &UserService{}
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if inYaml {
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if err := yaml.Unmarshal(yamlBuf.Bytes(), &spec); err != nil {
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return err
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}
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}
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svc := &CommandService{
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Name: filepath.Base(path),
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Restart: time.Duration(spec.Restart) * time.Second,
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Needs: spec.Needs,
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Provides: spec.Provides,
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Command: []string{path},
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}
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initLog.Taintf(log.OK, "user service: %s", path)
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services.Register(svc)
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return nil
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}
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