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         "github.com/iotbzh/xds-server/lib/xsapiv1"
  13 )
  14
  15 // Config parameters (json format) of /config command
  16 type Config struct {
  17         // Public APIConfig fields
  18         xsapiv1.APIConfig
  19
  20         // Private (un-exported fields in REST GET /config route)
  21         Options       Options        `json:"-"`
  22         FileConf      FileConfig     `json:"-"`
  23         Log           *logrus.Logger `json:"-"`
  24         LogVerboseOut io.Writer      `json:"-"`
  25 }
  26
  27 // Options set at the command line
  28 type Options struct {
  29         ConfigFile     string
  30         LogLevel       string
  31         LogFile        string
  32         NoFolderConfig bool
  33 }
  34
  35 // Config default values
  36 const (
  37         DefaultAPIVersion = "1"
  38         DefaultPort       = "8000"
  39         DefaultShareDir   = "${HOME}/.xds-server/projects"
  40         DefaultSTHomeDir  = "${HOME}/.xds-server/syncthing-config"
  41         DefaultSdkRootDir = "/xdt/sdk"
  42 )
  43
  44 // Init loads the configuration on start-up
  45 func Init(cliCtx *cli.Context, log *logrus.Logger) (*Config, error) {
  46         var err error
  47
  48         dfltShareDir := DefaultShareDir
  49         dfltSTHomeDir := DefaultSTHomeDir
  50         if resDir, err := common.ResolveEnvVar(DefaultShareDir); err == nil {
  51                 dfltShareDir = resDir
  52         }
  53         if resDir, err := common.ResolveEnvVar(DefaultSTHomeDir); err == nil {
  54                 dfltSTHomeDir = resDir
  55         }
  56
  57         // Retrieve Server ID (or create one the first time)
  58         uuid, err := ServerIDGet()
  59         if err != nil {
  60                 return nil, err
  61         }
  62
  63         // Define default configuration
  64         c := Config{
  65                 APIConfig: xsapiv1.APIConfig{
  66                         ServerUID:        uuid,
  67                         Version:          cliCtx.App.Metadata["version"].(string),
  68                         APIVersion:       DefaultAPIVersion,
  69                         VersionGitTag:    cliCtx.App.Metadata["git-tag"].(string),
  70                         Builder:          xsapiv1.BuilderConfig{},
  71                         SupportedSharing: map[string]bool{ /*FIXME USE folder.TypePathMap*/ "PathMap": true},
  72                 },
  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         c.Log.Infoln("Server UUID:          ", uuid)
  92
  93         // config file settings overwrite default config
  94         err = readGlobalConfig(&c, c.Options.ConfigFile)
  95         if err != nil {
  96                 return nil, err
  97         }
  98
  99         // Update location of shared dir if needed
 100         if !common.Exists(c.FileConf.ShareRootDir) {
 101                 if err := os.MkdirAll(c.FileConf.ShareRootDir, 0770); err != nil {
 102                         return nil, fmt.Errorf("No valid shared directory found: %v", err)
 103                 }
 104         }
 105         c.Log.Infoln("Share root directory: ", c.FileConf.ShareRootDir)
 106
 107         // Where Logs are redirected:
 108         //  default 'stdout' (logfile option default value)
 109         //  else use file (or filepath) set by --logfile option
 110         //  that may be overwritten by LogsDir field of config file
 111         logF := c.Options.LogFile
 112         logD := c.FileConf.LogsDir
 113         if logF != "stdout" {
 114                 if logD != "" {
 115                         lf := filepath.Base(logF)
 116                         if lf == "" || lf == "." {
 117                                 lf = "xds-server.log"
 118                         }
 119                         logF = filepath.Join(logD, lf)
 120                 } else {
 121                         logD = filepath.Dir(logF)
 122                 }
 123         }
 124         if logD == "" || logD == "." {
 125                 logD = "/tmp/xds/logs"
 126         }
 127         c.Options.LogFile = logF
 128         c.FileConf.LogsDir = logD
 129
 130         if c.FileConf.LogsDir != "" && !common.Exists(c.FileConf.LogsDir) {
 131                 if err := os.MkdirAll(c.FileConf.LogsDir, 0770); err != nil {
 132                         return nil, fmt.Errorf("Cannot create logs dir: %v", err)
 133                 }
 134         }
 135
 136         c.Log.Infoln("Logs file:            ", c.Options.LogFile)
 137         c.Log.Infoln("Logs directory:       ", c.FileConf.LogsDir)
 138
 139         return &c, nil
 140 }