namenode

type ListMetaData struct {
	FileName string
	FileSize uint64
}

type NameNodeDeleteRequest struct {
	RemoteFilePath string
	FileName       string
}

type NameNodeFileSize struct {
	FileSize uint64
}

type NameNodeListRequest struct {
	RemoteDirPath string
}

type NameNodeMetaData struct {
	BlockId        string
	BlockAddresses []datanode.DataNodeInstance //datanode的实例数组
}

type NameNodeReNameFileRequest struct {
	ReNameSrcFileName  string
	ReNameDestFileName string
}

type NameNodeReNameRequest struct {
	ReNameSrcPath  string
	ReNameDestPath string
}

type NameNodeReadRequest struct {
	FileName string
}

type NameNodeWriteRequest struct {
	RemoteFilePath string
	FileName       string
	FileSize       uint64
}

type ReDistributeDataRequest struct {
	DataNodeUri string
}

type Service struct {
	PrimaryPort         string
	Host                string
	Port                uint16
	BlockSize           uint64
	ReplicationFactor   uint64
	IdToDataNodes       map[uint64]datanode.DataNodeInstance
	FileNameToBlocks    map[string][]string //key:path+filename
	BlockToDataNodeIds  map[string][]uint64 //key:BlockId value：主+备份节点
	FileNameSize        map[string]uint64   //文件大小 key:path+filename
	DirectoryToFileName map[string][]string //目录下对应的文件 key:path value：该目录下所有文件名
}

type UnderReplicatedBlocks struct {
	BlockId           string
	HealthyDataNodeId uint64
}