import (
"encoding/json"
+ "os"
+ "os/exec"
+ "path"
+ "path/filepath"
+ "syscall"
+ "time"
"strings"
"fmt"
+ "io"
+
"github.com/Sirupsen/logrus"
"github.com/iotbzh/xds-server/lib/common"
+ "github.com/iotbzh/xds-server/lib/xdsconfig"
"github.com/syncthing/syncthing/lib/config"
)
// SyncThing .
type SyncThing struct {
BaseURL string
- client *common.HTTPClient
- log *logrus.Logger
+ APIKey string
+ Home string
+ STCmd *exec.Cmd
+
+ // Private fields
+ binDir string
+ logsDir string
+ exitSTChan chan ExitChan
+ client *common.HTTPClient
+ log *logrus.Logger
+}
+
+// ExitChan Channel used for process exit
+type ExitChan struct {
+ status int
+ err error
}
// NewSyncThing creates a new instance of Syncthing
-func NewSyncThing(url string, apikey string, log *logrus.Logger) *SyncThing {
- cl, err := common.HTTPNewClient(url,
+func NewSyncThing(conf *xdsconfig.Config, log *logrus.Logger) *SyncThing {
+ var url, apiKey, home, binDir string
+ var err error
+
+ stCfg := conf.FileConf.SThgConf
+ if stCfg != nil {
+ url = stCfg.GuiAddress
+ apiKey = stCfg.GuiAPIKey
+ home = stCfg.Home
+ binDir = stCfg.BinDir
+ }
+
+ if url == "" {
+ url = "http://localhost:8384"
+ }
+ if url[0:7] != "http://" {
+ url = "http://" + url
+ }
+
+ if home == "" {
+ home = "/mnt/share"
+ }
+
+ if binDir == "" {
+ if binDir, err = filepath.Abs(filepath.Dir(os.Args[0])); err != nil {
+ binDir = "/usr/local/bin"
+ }
+ }
+
+ s := SyncThing{
+ BaseURL: url,
+ APIKey: apiKey,
+ Home: home,
+ binDir: binDir,
+ logsDir: conf.FileConf.LogsDir,
+ log: log,
+ }
+
+ return &s
+}
+
+// Start Starts syncthing process
+func (s *SyncThing) startProc(exeName string, args []string, env []string, eChan *chan ExitChan) (*exec.Cmd, error) {
+
+ // Kill existing process (useful for debug ;-) )
+ if os.Getenv("DEBUG_MODE") != "" {
+ exec.Command("bash", "-c", "pkill -9 "+exeName).Output()
+ }
+
+ path, err := exec.LookPath(path.Join(s.binDir, exeName))
+ if err != nil {
+ return nil, fmt.Errorf("Cannot find %s executable in %s", exeName, s.binDir)
+ }
+ cmd := exec.Command(path, args...)
+ cmd.Env = os.Environ()
+ for _, ev := range env {
+ cmd.Env = append(cmd.Env, ev)
+ }
+
+ // open log file
+ var outfile *os.File
+ logFilename := filepath.Join(s.logsDir, exeName+".log")
+ if s.logsDir != "" {
+ outfile, err := os.Create(logFilename)
+ if err != nil {
+ return nil, fmt.Errorf("Cannot create log file %s", logFilename)
+ }
+
+ cmdOut, err := cmd.StdoutPipe()
+ if err != nil {
+ return nil, fmt.Errorf("Pipe stdout error for : %s", err)
+ }
+
+ go io.Copy(outfile, cmdOut)
+ }
+
+ err = cmd.Start()
+ if err != nil {
+ return nil, err
+ }
+
+ *eChan = make(chan ExitChan, 1)
+ go func(c *exec.Cmd, oF *os.File) {
+ status := 0
+ sts, err := c.Process.Wait()
+ if !sts.Success() {
+ s := sts.Sys().(syscall.WaitStatus)
+ status = s.ExitStatus()
+ }
+ if oF != nil {
+ oF.Close()
+ }
+ s.log.Debugf("%s exited with status %d, err %v", exeName, status, err)
+
+ *eChan <- ExitChan{status, err}
+ }(cmd, outfile)
+
+ return cmd, nil
+}
+
+// Start Starts syncthing process
+func (s *SyncThing) Start() (*exec.Cmd, error) {
+ var err error
+
+ s.log.Infof(" ST home=%s", s.Home)
+ s.log.Infof(" ST url=%s", s.BaseURL)
+
+ args := []string{
+ "--home=" + s.Home,
+ "-no-browser",
+ "--gui-address=" + s.BaseURL,
+ }
+
+ if s.APIKey != "" {
+ args = append(args, "-gui-apikey=\""+s.APIKey+"\"")
+ s.log.Infof(" ST apikey=%s", s.APIKey)
+ }
+ if s.log.Level == logrus.DebugLevel {
+ args = append(args, "-verbose")
+ }
+
+ env := []string{
+ "STNODEFAULTFOLDER=1",
+ }
+
+ s.STCmd, err = s.startProc("syncthing", args, env, &s.exitSTChan)
+
+ return s.STCmd, err
+}
+
+func (s *SyncThing) stopProc(pname string, proc *os.Process, exit chan ExitChan) {
+ if err := proc.Signal(os.Interrupt); err != nil {
+ s.log.Infof("Proc interrupt %s error: %s", pname, err.Error())
+
+ select {
+ case <-exit:
+ case <-time.After(time.Second):
+ // A bigger bonk on the head.
+ if err := proc.Signal(os.Kill); err != nil {
+ s.log.Infof("Proc term %s error: %s", pname, err.Error())
+ }
+ <-exit
+ }
+ }
+ s.log.Infof("%s stopped (PID %d)", pname, proc.Pid)
+}
+
+// Stop Stops syncthing process
+func (s *SyncThing) Stop() {
+ if s.STCmd == nil {
+ return
+ }
+ s.stopProc("syncthing", s.STCmd.Process, s.exitSTChan)
+ s.STCmd = nil
+}
+
+// Connect Establish HTTP connection with Syncthing
+func (s *SyncThing) Connect() error {
+ var err error
+ s.client, err = common.HTTPNewClient(s.BaseURL,
common.HTTPClientConfig{
URLPrefix: "/rest",
HeaderClientKeyName: "X-Syncthing-ID",
if err != nil {
msg := ": " + err.Error()
if strings.Contains(err.Error(), "connection refused") {
- msg = fmt.Sprintf("(url: %s)", url)
+ msg = fmt.Sprintf("(url: %s)", s.BaseURL)
}
- log.Debugf("ERROR: cannot connect to Syncthing %s", msg)
- return nil
+ return fmt.Errorf("ERROR: cannot connect to Syncthing %s", msg)
}
-
- s := SyncThing{
- BaseURL: url,
- client: cl,
- log: log,
+ if s.client == nil {
+ return fmt.Errorf("ERROR: cannot connect to Syncthing (null client)")
}
-
- return &s
+ return nil
}
// IDGet returns the Syncthing ID of Syncthing instance running locally
Code Review / src / xds / xds-server.git / blobdiff