Always close gdb pty/tty even if an error rises.
[src/xds/xds-server.git] / main.go
diff --git a/main.go b/main.go
index 49f36a5..6089e74 100644 (file)
--- a/main.go
+++ b/main.go
@@ -7,13 +7,14 @@ import (
        "os"
        "os/exec"
        "os/signal"
-       "strings"
+       "path/filepath"
        "syscall"
        "time"
 
        "github.com/Sirupsen/logrus"
        "github.com/codegangsta/cli"
        "github.com/iotbzh/xds-server/lib/crosssdk"
+       "github.com/iotbzh/xds-server/lib/folder"
        "github.com/iotbzh/xds-server/lib/model"
        "github.com/iotbzh/xds-server/lib/syncthing"
        "github.com/iotbzh/xds-server/lib/webserver"
@@ -40,17 +41,18 @@ var AppSubVersion = "unknown-dev"
 
 // Context holds the XDS server context
 type Context struct {
-       ProgName    string
-       Cli         *cli.Context
-       Config      *xdsconfig.Config
-       Log         *logrus.Logger
-       SThg        *st.SyncThing
-       SThgCmd     *exec.Cmd
-       SThgInotCmd *exec.Cmd
-       MFolder     *model.Folder
-       SDKs        *crosssdk.SDKs
-       WWWServer   *webserver.Server
-       Exit        chan os.Signal
+       ProgName      string
+       Cli           *cli.Context
+       Config        *xdsconfig.Config
+       Log           *logrus.Logger
+       LogLevelSilly bool
+       SThg          *st.SyncThing
+       SThgCmd       *exec.Cmd
+       SThgInotCmd   *exec.Cmd
+       MFolders      *model.Folders
+       SDKs          *crosssdk.SDKs
+       WWWServer     *webserver.Server
+       Exit          chan os.Signal
 }
 
 // NewContext Create a new instance of XDS server
@@ -70,12 +72,15 @@ func NewContext(cliCtx *cli.Context) *Context {
        }
        log.Formatter = &logrus.TextFormatter{}
 
+       sillyVal, sillyLog := os.LookupEnv("XDS_LOG_SILLY")
+
        // Define default configuration
        ctx := Context{
-               ProgName: cliCtx.App.Name,
-               Cli:      cliCtx,
-               Log:      log,
-               Exit:     make(chan os.Signal, 1),
+               ProgName:      cliCtx.App.Name,
+               Cli:           cliCtx,
+               Log:           log,
+               LogLevelSilly: (sillyLog && sillyVal == "1"),
+               Exit:          make(chan os.Signal, 1),
        }
 
        // register handler on SIGTERM / exit
@@ -98,7 +103,15 @@ func handlerSigTerm(ctx *Context) {
                ctx.Log.Infof("Stoping Web server...")
                ctx.WWWServer.Stop()
        }
-       os.Exit(1)
+       os.Exit(0)
+}
+
+// Helper function to log message on both stdout and logger
+func logPrint(ctx *Context, format string, args ...interface{}) {
+       fmt.Printf(format, args...)
+       if ctx.Log.Out != os.Stdout {
+               ctx.Log.Infof(format, args...)
+       }
 }
 
 // XDS Server application main routine
@@ -111,104 +124,107 @@ func xdsApp(cliCtx *cli.Context) error {
        // Load config
        cfg, err := xdsconfig.Init(ctx.Cli, ctx.Log)
        if err != nil {
-               return cli.NewExitError(err, 2)
+               return cli.NewExitError(err, -2)
        }
        ctx.Config = cfg
 
-       // TODO allow to redirect stdout/sterr into logs file
-       //logFilename := filepath.Join(ctx.Config.FileConf.LogsDir + "xds-server.log")
+       // Logs redirected into a file when logfile option or logsDir config is set
+       ctx.Config.LogVerboseOut = os.Stderr
+       if ctx.Config.FileConf.LogsDir != "" {
+               if ctx.Config.Options.LogFile != "stdout" {
+                       logFile := ctx.Config.Options.LogFile
+
+                       fdL, err := os.OpenFile(logFile, os.O_CREATE|os.O_TRUNC|os.O_WRONLY, 0666)
+                       if err != nil {
+                               msgErr := fmt.Sprintf("Cannot create log file %s", logFile)
+                               return cli.NewExitError(msgErr, int(syscall.EPERM))
+                       }
+                       ctx.Log.Out = fdL
+
+                       logPrint(ctx, "Logging file: %s\n", logFile)
+               }
 
-       // FIXME - add a builder interface and support other builder type (eg. native)
-       builderType := "syncthing"
+               logFileHTTPReq := filepath.Join(ctx.Config.FileConf.LogsDir, "xds-server-verbose.log")
+               fdLH, err := os.OpenFile(logFileHTTPReq, os.O_CREATE|os.O_TRUNC|os.O_WRONLY, 0666)
+               if err != nil {
+                       msgErr := fmt.Sprintf("Cannot create log file %s", logFileHTTPReq)
+                       return cli.NewExitError(msgErr, int(syscall.EPERM))
+               }
+               ctx.Config.LogVerboseOut = fdLH
 
-       switch builderType {
-       case "syncthing":
+               logPrint(ctx, "Logging file for HTTP requests:  %s\n", logFileHTTPReq)
+       }
 
-               // Start local instance of Syncthing and Syncthing-notify
+       // Create syncthing instance when section "syncthing" is present in config.json
+       if ctx.Config.FileConf.SThgConf != nil {
                ctx.SThg = st.NewSyncThing(ctx.Config, ctx.Log)
+       }
 
+       // Start local instance of Syncthing and Syncthing-notify
+       if ctx.SThg != nil {
                ctx.Log.Infof("Starting Syncthing...")
                ctx.SThgCmd, err = ctx.SThg.Start()
                if err != nil {
-                       return cli.NewExitError(err, 2)
+                       return cli.NewExitError(err, -4)
                }
-               fmt.Printf("Syncthing started (PID %d)\n", ctx.SThgCmd.Process.Pid)
+               logPrint(ctx, "Syncthing started (PID %d)\n", ctx.SThgCmd.Process.Pid)
 
                ctx.Log.Infof("Starting Syncthing-inotify...")
                ctx.SThgInotCmd, err = ctx.SThg.StartInotify()
                if err != nil {
-                       return cli.NewExitError(err, 2)
+                       return cli.NewExitError(err, -4)
                }
-               fmt.Printf("Syncthing-inotify started (PID %d)\n", ctx.SThgInotCmd.Process.Pid)
+               logPrint(ctx, "Syncthing-inotify started (PID %d)\n", ctx.SThgInotCmd.Process.Pid)
 
                // Establish connection with local Syncthing (retry if connection fail)
-               fmt.Printf("Establishing connection with Syncthing...\n")
+               logPrint(ctx, "Establishing connection with Syncthing...\n")
                time.Sleep(2 * time.Second)
-               retry := 10
+               maxRetry := 30
+               retry := maxRetry
                err = nil
                for retry > 0 {
                        if err = ctx.SThg.Connect(); err == nil {
                                break
                        }
-                       ctx.Log.Warningf("Establishing connection to Syncthing (retry %d/10)", retry)
+                       ctx.Log.Warningf("Establishing connection to Syncthing (retry %d/%d)", retry, maxRetry)
                        time.Sleep(time.Second)
                        retry--
                }
                if err != nil || retry == 0 {
-                       return cli.NewExitError(err, 2)
-               }
-
-               // Retrieve Syncthing config
-               id, err := ctx.SThg.IDGet()
-               if err != nil {
-                       return cli.NewExitError(err, 2)
-               }
-
-               if ctx.Config.Builder, err = xdsconfig.NewBuilderConfig(id); err != nil {
-                       return cli.NewExitError(err, 2)
-               }
-
-               // Retrieve initial Syncthing config
-
-               // FIXME: cannot retrieve default SDK, need to save on disk or somewhere
-               // else all config to be able to restore it.
-               defaultSdk := ""
-               stCfg, err := ctx.SThg.ConfigGet()
-               if err != nil {
-                       return cli.NewExitError(err, 2)
+                       return cli.NewExitError(err, -4)
                }
-               for _, stFld := range stCfg.Folders {
-                       relativePath := strings.TrimPrefix(stFld.RawPath, ctx.Config.ShareRootDir)
-                       if relativePath == "" {
-                               relativePath = stFld.RawPath
-                       }
 
-                       newFld := xdsconfig.NewFolderConfig(stFld.ID, stFld.Label, ctx.Config.ShareRootDir, strings.TrimRight(relativePath, "/"), defaultSdk)
-                       ctx.Config.Folders = ctx.Config.Folders.Update(xdsconfig.FoldersConfig{newFld})
+               // FIXME: do we still need Builder notion ? if no cleanup
+               if ctx.Config.Builder, err = xdsconfig.NewBuilderConfig(ctx.SThg.MyID); err != nil {
+                       return cli.NewExitError(err, -4)
                }
+               ctx.Config.SupportedSharing[folder.TypeCloudSync] = true
+       }
 
-               // Init model folder
-               ctx.MFolder = model.NewFolder(ctx.Config, ctx.SThg)
+       // Init model folder
+       ctx.MFolders = model.FoldersNew(ctx.Config, ctx.SThg)
 
-       default:
-               err = fmt.Errorf("Unsupported builder type")
-               return cli.NewExitError(err, 3)
+       // Load initial folders config from disk
+       if err := ctx.MFolders.LoadConfig(); err != nil {
+               return cli.NewExitError(err, -5)
        }
 
        // Init cross SDKs
        ctx.SDKs, err = crosssdk.Init(ctx.Config, ctx.Log)
        if err != nil {
-               return cli.NewExitError(err, 2)
+               return cli.NewExitError(err, -6)
        }
 
-       // Create and start Web Server
-       ctx.WWWServer = webserver.New(ctx.Config, ctx.MFolder, ctx.SDKs, ctx.Log)
+       // Create Web Server
+       ctx.WWWServer = webserver.New(ctx.Config, ctx.MFolders, ctx.SDKs, ctx.Log, ctx.LogLevelSilly)
+
+       // Run Web Server until exit requested (blocking call)
        if err = ctx.WWWServer.Serve(); err != nil {
                ctx.Log.Println(err)
-               return cli.NewExitError(err, 3)
+               return cli.NewExitError(err, -7)
        }
 
-       return cli.NewExitError("Program exited ", 4)
+       return cli.NewExitError("Program exited ", -99)
 }
 
 // main
@@ -242,6 +258,17 @@ func main() {
                        Usage:  "logging level (supported levels: panic, fatal, error, warn, info, debug)\n\t",
                        EnvVar: "LOG_LEVEL",
                },
+               cli.StringFlag{
+                       Name:   "logfile",
+                       Value:  "stdout",
+                       Usage:  "filename where logs will be redirected (default stdout)\n\t",
+                       EnvVar: "LOG_FILENAME",
+               },
+               cli.BoolFlag{
+                       Name:   "no-folderconfig, nfc",
+                       Usage:  fmt.Sprintf("Do not read folder config file (%s)\n\t", xdsconfig.FoldersConfigFilename),
+                       EnvVar: "NO_FOLDERCONFIG",
+               },
        }
 
        // only one action: Web Server