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package xdsconfig
import (
"fmt"
"io"
"path/filepath"
"os"
"github.com/Sirupsen/logrus"
common "github.com/iotbzh/xds-common/golib"
uuid "github.com/satori/go.uuid"
"github.com/urfave/cli"
)
// Config parameters (json format) of /config command
type Config struct {
AgentUID string
Version string
APIVersion string
VersionGitTag string
Options Options
FileConf FileConfig
Log *logrus.Logger
LogVerboseOut io.Writer
}
// Options set at the command line
type Options struct {
ConfigFile string
LogLevel string
LogFile string
}
// Config default values
const (
DefaultAPIVersion = "1"
DefaultLogLevel = "error"
)
// Init loads the configuration on start-up
func Init(ctx *cli.Context, log *logrus.Logger) (*Config, error) {
var err error
defaultWebAppDir := "${EXEPATH}/www"
defaultSTHomeDir := "${HOME}/.xds/agent/syncthing-config"
// TODO: allocate uuid only the first time and save+reuse it later
uuid := uuid.NewV1().String()
// Define default configuration
c := Config{
AgentUID: uuid,
Version: ctx.App.Metadata["version"].(string),
APIVersion: DefaultAPIVersion,
VersionGitTag: ctx.App.Metadata["git-tag"].(string),
Options: Options{
ConfigFile: ctx.GlobalString("config"),
LogLevel: ctx.GlobalString("log"),
LogFile: ctx.GlobalString("logfile"),
},
FileConf: FileConfig{
HTTPPort: "8800",
WebAppDir: defaultWebAppDir,
LogsDir: "/tmp/logs",
ServersConf: []XDSServerConf{
XDSServerConf{
URL: "http://localhost:8000",
ConnRetry: 10,
},
},
SThgConf: &SyncThingConf{
Home: defaultSTHomeDir,
},
},
Log: log,
}
c.Log.Infoln("Agent UUID: ", uuid)
// config file settings overwrite default config
err = readGlobalConfig(&c, c.Options.ConfigFile)
if err != nil {
return nil, err
}
// Handle where Logs are redirected:
// default 'stdout' (logfile option default value)
// else use file (or filepath) set by --logfile option
// that may be overwritten by LogsDir field of config file
logF := c.Options.LogFile
logD := c.FileConf.LogsDir
if logF != "stdout" {
if logD != "" {
lf := filepath.Base(logF)
if lf == "" || lf == "." {
lf = "xds-agent.log"
}
logF = filepath.Join(logD, lf)
} else {
logD = filepath.Dir(logF)
}
}
if logD == "" || logD == "." {
logD = "/tmp/xds/logs"
}
c.Options.LogFile = logF
c.FileConf.LogsDir = logD
if c.FileConf.LogsDir != "" && !common.Exists(c.FileConf.LogsDir) {
if err := os.MkdirAll(c.FileConf.LogsDir, 0770); err != nil {
return nil, fmt.Errorf("Cannot create logs dir: %v", err)
}
}
c.Log.Infoln("Logs file: ", c.Options.LogFile)
c.Log.Infoln("Logs directory: ", c.FileConf.LogsDir)
return &c, nil
}
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