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