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package hdfs
import (
hdfs "github.com/colinmarc/hdfs/v2/internal/protocol/hadoop_hdfs"
)
// ServerDefaults represents the filesystem configuration stored on the
// Namenode.
type ServerDefaults struct {
BlockSize int64
BytesPerChecksum int
WritePacketSize int
Replication int
FileBufferSize int
EncryptDataTransfer bool
TrashInterval int64
KeyProviderURI string
PolicyId int
}
// ServerDefaults fetches the stored defaults from the Namenode and returns
// them and any error encountered.
func (c *Client) ServerDefaults() (ServerDefaults, error) {
resp, err := c.fetchDefaults()
if err != nil {
return ServerDefaults{}, err
}
return ServerDefaults{
BlockSize: int64(resp.GetBlockSize()),
BytesPerChecksum: int(resp.GetBytesPerChecksum()),
WritePacketSize: int(resp.GetWritePacketSize()),
Replication: int(resp.GetReplication()),
FileBufferSize: int(resp.GetFileBufferSize()),
EncryptDataTransfer: resp.GetEncryptDataTransfer(),
TrashInterval: int64(resp.GetTrashInterval()),
KeyProviderURI: resp.GetKeyProviderUri(),
PolicyId: int(resp.GetPolicyId()),
}, nil
}
func (c *Client) fetchDefaults() (*hdfs.FsServerDefaultsProto, error) {
if c.defaults != nil {
return c.defaults, nil
}
req := &hdfs.GetServerDefaultsRequestProto{}
resp := &hdfs.GetServerDefaultsResponseProto{}
err := c.namenode.Execute("getServerDefaults", req, resp)
if err != nil {
return nil, err
}
c.defaults = resp.GetServerDefaults()
return c.defaults, nil
}
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