1. 개요

• eth node를 위한 db를 open (없으면 만듬)

dir : node/node.go

2. 인수

• name (string)
• cache (int)
• handles (int)
• ancient (string)
• namespace(string)
• readonly (bool)

3. 구현

• freezer를 갖춘 db 인스턴스 생성

  //...
  
  var db ethdb.Database
  var err error
  
  if n.config.DataDir == " " {
  		db = rawdb.newmemoryDatabase()
  } else {
  		db, err = rawdb.NewLevelDBDatabaseWithFreezer(n.ResolvePath(name), cache, handles, n.ResolveAncient(name, ancient), namespace, readonly)
  		// > core/rawdb/database.go
  }
  
  // ...
  return db, err
  

4. 호출자

• eth.New()

func New()