lib/xdsconfig/config.go

   1 package xdsconfig
   2
   3 import (
   4         "fmt"
   5         "io"
   6         "os"
   7         "path/filepath"
   8
   9         "github.com/Sirupsen/logrus"
  10         "github.com/codegangsta/cli"
  11         common "github.com/iotbzh/xds-common/golib"
  12 )
  13
  14 // Config parameters (json format) of /config command
  15 type Config struct {
  16         ServerUID        string          `json:"id"`
  17         Version          string          `json:"version"`
  18         APIVersion       string          `json:"apiVersion"`
  19         VersionGitTag    string          `json:"gitTag"`
  20         SupportedSharing map[string]bool `json:"supportedSharing"`
  21         Builder          BuilderConfig   `json:"builder"`
  22
  23         // Private (un-exported fields in REST GET /config route)
  24         Options       Options        `json:"-"`
  25         FileConf      FileConfig     `json:"-"`
  26         Log           *logrus.Logger `json:"-"`
  27         LogVerboseOut io.Writer      `json:"-"`
  28 }
  29
  30 // Options set at the command line
  31 type Options struct {
  32         ConfigFile     string
  33         LogLevel       string
  34         LogFile        string
  35         NoFolderConfig bool
  36 }
  37
  38 // Config default values
  39 const (
  40         DefaultAPIVersion = "1"
  41         DefaultPort       = "8000"
  42         DefaultShareDir   = "${HOME}/.xds-server/projects"
  43         DefaultSTHomeDir  = "${HOME}/.xds-server/syncthing-config"
  44         DefaultSdkRootDir = "/xdt/sdk"
  45 )
  46
  47 // Init loads the configuration on start-up
  48 func Init(cliCtx *cli.Context, log *logrus.Logger) (*Config, error) {
  49         var err error
  50
  51         dfltShareDir := DefaultShareDir
  52         dfltSTHomeDir := DefaultSTHomeDir
  53         if resDir, err := common.ResolveEnvVar(DefaultShareDir); err == nil {
  54                 dfltShareDir = resDir
  55         }
  56         if resDir, err := common.ResolveEnvVar(DefaultSTHomeDir); err == nil {
  57                 dfltSTHomeDir = resDir
  58         }
  59
  60         uuid, err := ServerIDGet()
  61         if err != nil {
  62                 return nil, err
  63         }
  64
  65         // Define default configuration
  66         c := Config{
  67                 ServerUID:        uuid,
  68                 Version:          cliCtx.App.Metadata["version"].(string),
  69                 APIVersion:       DefaultAPIVersion,
  70                 VersionGitTag:    cliCtx.App.Metadata["git-tag"].(string),
  71                 Builder:          BuilderConfig{},
  72                 SupportedSharing: map[string]bool{ /*FIXME USE folder.TypePathMap*/ "PathMap": true},
  73
  74                 Options: Options{
  75                         ConfigFile:     cliCtx.GlobalString("config"),
  76                         LogLevel:       cliCtx.GlobalString("log"),
  77                         LogFile:        cliCtx.GlobalString("logfile"),
  78                         NoFolderConfig: cliCtx.GlobalBool("no-folderconfig"),
  79                 },
  80                 FileConf: FileConfig{
  81                         WebAppDir:    "webapp/dist",
  82                         ShareRootDir: dfltShareDir,
  83                         SdkRootDir:   DefaultSdkRootDir,
  84                         HTTPPort:     DefaultPort,
  85                         SThgConf:     &SyncThingConf{Home: dfltSTHomeDir},
  86                         LogsDir:      "",
  87                 },
  88                 Log: log,
  89         }
  90
  91         // config file settings overwrite default config
  92         err = readGlobalConfig(&c, c.Options.ConfigFile)
  93         if err != nil {
  94                 return nil, err
  95         }
  96
  97         // Update location of shared dir if needed
  98         if !common.Exists(c.FileConf.ShareRootDir) {
  99                 if err := os.MkdirAll(c.FileConf.ShareRootDir, 0770); err != nil {
 100                         return nil, fmt.Errorf("No valid shared directory found: %v", err)
 101                 }
 102         }
 103         c.Log.Infoln("Share root directory: ", c.FileConf.ShareRootDir)
 104
 105         // Where Logs are redirected:
 106         //  default 'stdout' (logfile option default value)
 107         //  else use file (or filepath) set by --logfile option
 108         //  that may be overwritten by LogsDir field of config file
 109         logF := c.Options.LogFile
 110         logD := c.FileConf.LogsDir
 111         if logF != "stdout" {
 112                 if logD != "" {
 113                         lf := filepath.Base(logF)
 114                         if lf == "" || lf == "." {
 115                                 lf = "xds-server.log"
 116                         }
 117                         logF = filepath.Join(logD, lf)
 118                 } else {
 119                         logD = filepath.Dir(logF)
 120                 }
 121         }
 122         if logD == "" || logD == "." {
 123                 logD = "/tmp/xds/logs"
 124         }
 125         c.Options.LogFile = logF
 126         c.FileConf.LogsDir = logD
 127
 128         if c.FileConf.LogsDir != "" && !common.Exists(c.FileConf.LogsDir) {
 129                 if err := os.MkdirAll(c.FileConf.LogsDir, 0770); err != nil {
 130                         return nil, fmt.Errorf("Cannot create logs dir: %v", err)
 131                 }
 132         }
 133         c.Log.Infoln("Logs file:      ", c.Options.LogFile)
 134         c.Log.Infoln("Logs directory: ", c.FileConf.LogsDir)
 135
 136         return &c, nil
 137 }