func NewApp() *App {
app := &App{}
// Setup asynchronous manager
app.asyncManager = rest.NewAsyncHttpManager(ASYNC_ROUTE)
// Setup BoltDB database
var err error
app.db, err = bolt.Open(dbfilename, 0600, &bolt.Options{Timeout: 3 * time.Second})
if err != nil {
logger.LogError("Unable to open database")
return nil
}
err = app.db.Update(func(tx *bolt.Tx) error {
// Create Cluster Bucket
_, err := tx.CreateBucketIfNotExists([]byte(BOLTDB_BUCKET_CLUSTER))
if err != nil {
logger.LogError("Unable to create cluster bucket in DB")
return err
}
// Create Node Bucket
_, err = tx.CreateBucketIfNotExists([]byte(BOLTDB_BUCKET_NODE))
if err != nil {
logger.LogError("Unable to create cluster bucket in DB")
return err
}
// Create Volume Bucket
_, err = tx.CreateBucketIfNotExists([]byte(BOLTDB_BUCKET_VOLUME))
if err != nil {
logger.LogError("Unable to create cluster bucket in DB")
return err
}
// Create Device Bucket
_, err = tx.CreateBucketIfNotExists([]byte(BOLTDB_BUCKET_DEVICE))
if err != nil {
logger.LogError("Unable to create cluster bucket in DB")
return err
}
// Create Brick Bucket
_, err = tx.CreateBucketIfNotExists([]byte(BOLTDB_BUCKET_BRICK))
if err != nil {
logger.LogError("Unable to create cluster bucket in DB")
return err
}
return nil
})
if err != nil {
logger.Err(err)
return nil
}
logger.Info("GlusterFS Application Loaded")
return app
}
func NewApp(configIo io.Reader) *App {
app := &App{}
// Load configuration file
app.conf = loadConfiguration(configIo)
if app.conf == nil {
return nil
}
// Setup asynchronous manager
app.asyncManager = rest.NewAsyncHttpManager(ASYNC_ROUTE)
// Setup executor
switch {
case app.conf.Executor == "mock":
app.xo = mockexec.NewMockExecutor()
app.executor = app.xo
case app.conf.Executor == "ssh" || app.conf.Executor == "":
app.executor = sshexec.NewSshExecutor(&app.conf.SshConfig)
default:
return nil
}
if app.executor == nil {
return nil
}
logger.Info("Loaded %v executor", app.conf.Executor)
// Set db is set in the configuration file
if app.conf.DBfile != "" {
dbfilename = app.conf.DBfile
}
// Setup BoltDB database
var err error
app.db, err = bolt.Open(dbfilename, 0600, &bolt.Options{Timeout: 3 * time.Second})
if err != nil {
logger.LogError("Unable to open database")
return nil
}
err = app.db.Update(func(tx *bolt.Tx) error {
// Create Cluster Bucket
_, err := tx.CreateBucketIfNotExists([]byte(BOLTDB_BUCKET_CLUSTER))
if err != nil {
logger.LogError("Unable to create cluster bucket in DB")
return err
}
// Create Node Bucket
_, err = tx.CreateBucketIfNotExists([]byte(BOLTDB_BUCKET_NODE))
if err != nil {
logger.LogError("Unable to create cluster bucket in DB")
return err
}
// Create Volume Bucket
_, err = tx.CreateBucketIfNotExists([]byte(BOLTDB_BUCKET_VOLUME))
if err != nil {
logger.LogError("Unable to create cluster bucket in DB")
return err
}
// Create Device Bucket
_, err = tx.CreateBucketIfNotExists([]byte(BOLTDB_BUCKET_DEVICE))
if err != nil {
logger.LogError("Unable to create cluster bucket in DB")
return err
}
// Create Brick Bucket
_, err = tx.CreateBucketIfNotExists([]byte(BOLTDB_BUCKET_BRICK))
if err != nil {
logger.LogError("Unable to create cluster bucket in DB")
return err
}
return nil
})
if err != nil {
logger.Err(err)
return nil
}
// Setup allocator
switch {
case app.conf.Allocator == "mock":
app.allocator = NewMockAllocator(app.db)
case app.conf.Allocator == "simple" || app.conf.Allocator == "":
app.conf.Allocator = "simple"
app.allocator = NewSimpleAllocatorFromDb(app.db)
default:
return nil
}
logger.Info("Loaded %v allocator", app.conf.Allocator)
// Show application has loaded
logger.Info("GlusterFS Application Loaded")
return app
}