org.apache.hadoop.hdfs.web

Class JsonUtil

java.lang.Object

org.apache.hadoop.hdfs.web.JsonUtil

public class JsonUtil
extends Object

JSON Utilities

Constructor Summary

Constructors

Constructor and Description
JsonUtil()

Method Summary

Modifier and Type	Method and Description
static byte[]	getXAttr(Map<?,?> json, String name)
static AclStatus	toAclStatus(Map<?,?> json) Convert a Json map to a AclStatus object.
static ContentSummary	toContentSummary(Map<?,?> json) Convert a Json map to a ContentSummary.
static org.apache.hadoop.security.token.Token<org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier>	toDelegationToken(Map<?,?> json) Convert a Json map to a Token of DelegationTokenIdentifier.
static org.apache.hadoop.hdfs.protocol.HdfsFileStatus	toFileStatus(Map<?,?> json, boolean includesType) Convert a Json map to a HdfsFileStatus object.
static String	toJsonString(AclStatus status) Convert a AclStatus object to a Json string.
static String	toJsonString(ContentSummary contentsummary) Convert a ContentSummary to a Json string.
static String	toJsonString(Exception e) Convert an exception object to a Json string.
static String	toJsonString(org.apache.hadoop.hdfs.protocol.HdfsFileStatus status, boolean includeType) Convert a HdfsFileStatus object to a Json string.
static String	toJsonString(List<XAttr> xAttrs)
static String	toJsonString(List<XAttr> xAttrs, XAttrCodec encoding)
static String	toJsonString(org.apache.hadoop.hdfs.protocol.LocatedBlocks locatedblocks) Convert LocatedBlocks to a Json string.
static String	toJsonString(MD5MD5CRC32FileChecksum checksum) Convert a MD5MD5CRC32FileChecksum to a Json string.
static String	toJsonString(String key, Object value) Convert a key-value pair to a Json string.
static String	toJsonString(org.apache.hadoop.security.token.Token<? extends org.apache.hadoop.security.token.TokenIdentifier> token) Convert a token object to a Json string.
static org.apache.hadoop.hdfs.protocol.LocatedBlocks	toLocatedBlocks(Map<?,?> json) Convert a Json map to LocatedBlock.
static MD5MD5CRC32FileChecksum	toMD5MD5CRC32FileChecksum(Map<?,?> json) Convert a Json map to a MD5MD5CRC32FileChecksum.
static org.apache.hadoop.ipc.RemoteException	toRemoteException(Map<?,?> json) Convert a Json map to a RemoteException.
static org.apache.hadoop.security.token.Token<? extends org.apache.hadoop.security.token.TokenIdentifier>	toToken(Map<?,?> m) Convert a Json map to a Token.
static List<String>	toXAttrNames(Map<?,?> json)
static Map<String,byte[]>	toXAttrs(Map<?,?> json)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

JsonUtil

public JsonUtil()

Method Detail

toJsonString

public static String toJsonString(org.apache.hadoop.security.token.Token<? extends org.apache.hadoop.security.token.TokenIdentifier> token)
                           throws IOException

Convert a token object to a Json string.

Throws:

IOException

toToken

public static org.apache.hadoop.security.token.Token<? extends org.apache.hadoop.security.token.TokenIdentifier> toToken(Map<?,?> m)
                                                                                                                  throws IOException

Convert a Json map to a Token.

Throws:

IOException

toDelegationToken

public static org.apache.hadoop.security.token.Token<org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier> toDelegationToken(Map<?,?> json)
                                                                                                                                            throws IOException

Convert a Json map to a Token of DelegationTokenIdentifier.

Throws:

IOException

toJsonString

public static String toJsonString(Exception e)

Convert an exception object to a Json string.

toRemoteException

public static org.apache.hadoop.ipc.RemoteException toRemoteException(Map<?,?> json)

Convert a Json map to a RemoteException.

toJsonString

public static String toJsonString(String key,
                                  Object value)

Convert a key-value pair to a Json string.

toJsonString

public static String toJsonString(org.apache.hadoop.hdfs.protocol.HdfsFileStatus status,
                                  boolean includeType)

Convert a HdfsFileStatus object to a Json string.

toFileStatus

public static org.apache.hadoop.hdfs.protocol.HdfsFileStatus toFileStatus(Map<?,?> json,
                                                                          boolean includesType)

Convert a Json map to a HdfsFileStatus object.

toJsonString

public static String toJsonString(org.apache.hadoop.hdfs.protocol.LocatedBlocks locatedblocks)
                           throws IOException

Convert LocatedBlocks to a Json string.

Throws:

IOException

toLocatedBlocks

public static org.apache.hadoop.hdfs.protocol.LocatedBlocks toLocatedBlocks(Map<?,?> json)
                                                                     throws IOException

Convert a Json map to LocatedBlock.

Throws:

IOException

toJsonString

public static String toJsonString(ContentSummary contentsummary)

Convert a ContentSummary to a Json string.

toContentSummary

public static ContentSummary toContentSummary(Map<?,?> json)

Convert a Json map to a ContentSummary.

toJsonString

public static String toJsonString(MD5MD5CRC32FileChecksum checksum)

Convert a MD5MD5CRC32FileChecksum to a Json string.

toMD5MD5CRC32FileChecksum

public static MD5MD5CRC32FileChecksum toMD5MD5CRC32FileChecksum(Map<?,?> json)
                                                         throws IOException

Convert a Json map to a MD5MD5CRC32FileChecksum.

Throws:

IOException

toJsonString

public static String toJsonString(AclStatus status)

Convert a AclStatus object to a Json string.

toAclStatus

public static AclStatus toAclStatus(Map<?,?> json)

Convert a Json map to a AclStatus object.

toJsonString

public static String toJsonString(List<XAttr> xAttrs,
                                  XAttrCodec encoding)
                           throws IOException

Throws:

IOException

toJsonString

public static String toJsonString(List<XAttr> xAttrs)
                           throws IOException

Throws:

IOException

getXAttr

public static byte[] getXAttr(Map<?,?> json,
                              String name)
                       throws IOException

Throws:

IOException

toXAttrs

public static Map<String,byte[]> toXAttrs(Map<?,?> json)
                                   throws IOException

Throws:

IOException

toXAttrNames

public static List<String> toXAttrNames(Map<?,?> json)
                                 throws IOException

Throws:

IOException