HDFS-6565. Use jackson instead jetty json in hdfs-client. Contributed by Akira AJISAKA.
This commit is contained in:
Haohui Mai
parent
5af693fde2
commit
e2262d3d18
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@ -1077,6 +1077,9 @@ Release 2.7.0 - UNRELEASED
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HDFS-7757. Misleading error messages in FSImage.java. (Brahma Reddy Battula
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via Arpit Agarwal)
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HDFS-6565. Use jackson instead jetty json in hdfs-client.
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(Akira Ajisaka via wheat9)
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BREAKDOWN OF HDFS-7584 SUBTASKS AND RELATED JIRAS
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HDFS-7720. Quota by Storage Type API, tools and ClientNameNode
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@ -21,7 +21,6 @@ import org.apache.hadoop.fs.*;
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import org.apache.hadoop.fs.permission.AclEntry;
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import org.apache.hadoop.fs.permission.AclStatus;
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import org.apache.hadoop.fs.permission.FsPermission;
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import org.apache.hadoop.hdfs.protocol.BlockStoragePolicy;
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import org.apache.hadoop.hdfs.DFSUtil;
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import org.apache.hadoop.hdfs.XAttrHelper;
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import org.apache.hadoop.hdfs.protocol.*;
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@ -35,7 +34,8 @@ import org.apache.hadoop.security.token.Token;
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import org.apache.hadoop.security.token.TokenIdentifier;
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import org.apache.hadoop.util.DataChecksum;
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import org.apache.hadoop.util.StringUtils;
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import org.mortbay.util.ajax.JSON;
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import org.codehaus.jackson.map.ObjectMapper;
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import org.codehaus.jackson.map.ObjectReader;
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import com.google.common.collect.Lists;
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import com.google.common.collect.Maps;
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@ -95,59 +95,6 @@ public class JsonUtil {
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return (Token<BlockTokenIdentifier>)toToken(m);
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}
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/** Convert a Token[] to a JSON array. */
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private static Object[] toJsonArray(final Token<? extends TokenIdentifier>[] array
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) throws IOException {
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if (array == null) {
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return null;
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} else if (array.length == 0) {
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return EMPTY_OBJECT_ARRAY;
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} else {
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final Object[] a = new Object[array.length];
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for(int i = 0; i < array.length; i++) {
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a[i] = toJsonMap(array[i]);
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}
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return a;
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}
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}
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/** Convert a token object to a JSON string. */
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public static String toJsonString(final Token<? extends TokenIdentifier>[] tokens
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) throws IOException {
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if (tokens == null) {
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return null;
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}
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final Map<String, Object> m = new TreeMap<String, Object>();
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m.put(Token.class.getSimpleName(), toJsonArray(tokens));
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return toJsonString(Token.class.getSimpleName() + "s", m);
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}
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/** Convert an Object[] to a List<Token<?>>. */
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private static List<Token<?>> toTokenList(final Object[] objects) throws IOException {
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if (objects == null) {
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return null;
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} else if (objects.length == 0) {
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return Collections.emptyList();
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} else {
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final List<Token<?>> list = new ArrayList<Token<?>>(objects.length);
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for(int i = 0; i < objects.length; i++) {
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list.add(toToken((Map<?, ?>)objects[i]));
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}
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return list;
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}
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}
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/** Convert a JSON map to a List<Token<?>>. */
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public static List<Token<?>> toTokenList(final Map<?, ?> json) throws IOException {
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if (json == null) {
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return null;
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}
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final Map<?, ?> m = (Map<?, ?>)json.get(Token.class.getSimpleName() + "s");
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return toTokenList((Object[])m.get(Token.class.getSimpleName()));
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}
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/** Convert an exception object to a Json string. */
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public static String toJsonString(final Exception e) {
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final Map<String, Object> m = new TreeMap<String, Object>();
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@ -173,7 +120,12 @@ public class JsonUtil {
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public static String toJsonString(final String key, final Object value) {
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final Map<String, Object> m = new TreeMap<String, Object>();
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m.put(key, value);
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return JSON.toString(m);
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ObjectMapper mapper = new ObjectMapper();
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try {
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return mapper.writeValueAsString(m);
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} catch (IOException ignored) {
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}
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return null;
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}
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/** Convert a FsPermission object to a string. */
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@ -233,7 +185,13 @@ public class JsonUtil {
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m.put("fileId", status.getFileId());
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m.put("childrenNum", status.getChildrenNum());
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m.put("storagePolicy", status.getStoragePolicy());
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return includeType ? toJsonString(FileStatus.class, m): JSON.toString(m);
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ObjectMapper mapper = new ObjectMapper();
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try {
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return includeType ?
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toJsonString(FileStatus.class, m) : mapper.writeValueAsString(m);
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} catch (IOException ignored) {
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}
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return null;
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}
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/** Convert a Json map to a HdfsFileStatus object. */
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@ -249,24 +207,22 @@ public class JsonUtil {
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final byte[] symlink = type != PathType.SYMLINK? null
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: DFSUtil.string2Bytes((String)m.get("symlink"));
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final long len = (Long) m.get("length");
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final long len = ((Number) m.get("length")).longValue();
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final String owner = (String) m.get("owner");
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final String group = (String) m.get("group");
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final FsPermission permission = toFsPermission((String) m.get("permission"),
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(Boolean)m.get("aclBit"), (Boolean)m.get("encBit"));
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final long aTime = (Long) m.get("accessTime");
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final long mTime = (Long) m.get("modificationTime");
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final long blockSize = (Long) m.get("blockSize");
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final long aTime = ((Number) m.get("accessTime")).longValue();
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final long mTime = ((Number) m.get("modificationTime")).longValue();
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final long blockSize = ((Number) m.get("blockSize")).longValue();
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final boolean isLazyPersist = m.containsKey("lazyPersist")
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? (Boolean) m.get("lazyPersist") : false;
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final short replication = (short) (long) (Long) m.get("replication");
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final long fileId = m.containsKey("fileId") ? (Long) m.get("fileId")
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: INodeId.GRANDFATHER_INODE_ID;
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Long childrenNumLong = (Long) m.get("childrenNum");
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final int childrenNum = (childrenNumLong == null) ? -1
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: childrenNumLong.intValue();
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final short replication = ((Number) m.get("replication")).shortValue();
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final long fileId = m.containsKey("fileId") ?
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((Number) m.get("fileId")).longValue() : INodeId.GRANDFATHER_INODE_ID;
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final int childrenNum = getInt(m, "childrenNum", -1);
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final byte storagePolicy = m.containsKey("storagePolicy") ?
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(byte) (long) (Long) m.get("storagePolicy") :
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(byte) ((Number) m.get("storagePolicy")).longValue() :
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BlockStoragePolicySuite.ID_UNSPECIFIED;
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return new HdfsFileStatus(len, type == PathType.DIRECTORY, replication,
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blockSize, mTime, aTime, permission, owner, group,
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@ -295,9 +251,10 @@ public class JsonUtil {
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}
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final String blockPoolId = (String)m.get("blockPoolId");
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final long blockId = (Long)m.get("blockId");
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final long numBytes = (Long)m.get("numBytes");
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final long generationStamp = (Long)m.get("generationStamp");
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final long blockId = ((Number) m.get("blockId")).longValue();
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final long numBytes = ((Number) m.get("numBytes")).longValue();
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final long generationStamp =
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((Number) m.get("generationStamp")).longValue();
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return new ExtendedBlock(blockPoolId, blockId, numBytes, generationStamp);
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}
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@ -338,7 +295,7 @@ public class JsonUtil {
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if (value == null) {
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return defaultValue;
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}
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return (int) (long) (Long) value;
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return ((Number) value).intValue();
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}
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private static long getLong(Map<?, ?> m, String key, final long defaultValue) {
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@ -346,7 +303,7 @@ public class JsonUtil {
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if (value == null) {
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return defaultValue;
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}
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return (Long) value;
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return ((Number) value).longValue();
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}
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private static String getString(Map<?, ?> m, String key,
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@ -358,6 +315,15 @@ public class JsonUtil {
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return (String) value;
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}
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static List<?> getList(Map<?, ?> m, String key) {
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Object list = m.get(key);
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if (list instanceof List<?>) {
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return (List<?>) list;
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} else {
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return null;
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}
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}
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/** Convert a Json map to an DatanodeInfo object. */
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static DatanodeInfo toDatanodeInfo(final Map<?, ?> m)
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throws IOException {
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@ -402,9 +368,9 @@ public class JsonUtil {
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(String)m.get("hostName"),
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(String)m.get("storageID"),
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xferPort,
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(int)(long)(Long)m.get("infoPort"),
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((Number) m.get("infoPort")).intValue(),
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getInt(m, "infoSecurePort", 0),
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(int)(long)(Long)m.get("ipcPort"),
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((Number) m.get("ipcPort")).intValue(),
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getLong(m, "capacity", 0l),
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getLong(m, "dfsUsed", 0l),
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@ -434,16 +400,17 @@ public class JsonUtil {
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}
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/** Convert an Object[] to a DatanodeInfo[]. */
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private static DatanodeInfo[] toDatanodeInfoArray(final Object[] objects)
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private static DatanodeInfo[] toDatanodeInfoArray(final List<?> objects)
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throws IOException {
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if (objects == null) {
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return null;
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} else if (objects.length == 0) {
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} else if (objects.isEmpty()) {
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return EMPTY_DATANODE_INFO_ARRAY;
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} else {
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final DatanodeInfo[] array = new DatanodeInfo[objects.length];
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for(int i = 0; i < array.length; i++) {
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array[i] = toDatanodeInfo((Map<?, ?>) objects[i]);
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final DatanodeInfo[] array = new DatanodeInfo[objects.size()];
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int i = 0;
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for (Object object : objects) {
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array[i++] = toDatanodeInfo((Map<?, ?>) object);
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}
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return array;
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}
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@ -474,11 +441,11 @@ public class JsonUtil {
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final ExtendedBlock b = toExtendedBlock((Map<?, ?>)m.get("block"));
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final DatanodeInfo[] locations = toDatanodeInfoArray(
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(Object[])m.get("locations"));
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final long startOffset = (Long)m.get("startOffset");
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getList(m, "locations"));
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final long startOffset = ((Number) m.get("startOffset")).longValue();
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final boolean isCorrupt = (Boolean)m.get("isCorrupt");
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final DatanodeInfo[] cachedLocations = toDatanodeInfoArray(
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(Object[])m.get("cachedLocations"));
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getList(m, "cachedLocations"));
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final LocatedBlock locatedblock = new LocatedBlock(b, locations,
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null, null, startOffset, isCorrupt, cachedLocations);
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@ -502,17 +469,17 @@ public class JsonUtil {
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}
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}
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/** Convert an Object[] to a List of LocatedBlock. */
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private static List<LocatedBlock> toLocatedBlockList(final Object[] objects
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) throws IOException {
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/** Convert an List of Object to a List of LocatedBlock. */
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private static List<LocatedBlock> toLocatedBlockList(
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final List<?> objects) throws IOException {
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if (objects == null) {
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return null;
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} else if (objects.length == 0) {
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} else if (objects.isEmpty()) {
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return Collections.emptyList();
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} else {
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final List<LocatedBlock> list = new ArrayList<LocatedBlock>(objects.length);
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for(int i = 0; i < objects.length; i++) {
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list.add(toLocatedBlock((Map<?, ?>)objects[i]));
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final List<LocatedBlock> list = new ArrayList<>(objects.size());
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for (Object object : objects) {
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list.add(toLocatedBlock((Map<?, ?>) object));
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}
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return list;
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}
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@ -543,10 +510,10 @@ public class JsonUtil {
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}
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final Map<?, ?> m = (Map<?, ?>)json.get(LocatedBlocks.class.getSimpleName());
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final long fileLength = (Long)m.get("fileLength");
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final long fileLength = ((Number) m.get("fileLength")).longValue();
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final boolean isUnderConstruction = (Boolean)m.get("isUnderConstruction");
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final List<LocatedBlock> locatedBlocks = toLocatedBlockList(
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(Object[])m.get("locatedBlocks"));
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getList(m, "locatedBlocks"));
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final LocatedBlock lastLocatedBlock = toLocatedBlock(
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(Map<?, ?>)m.get("lastLocatedBlock"));
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final boolean isLastBlockComplete = (Boolean)m.get("isLastBlockComplete");
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@ -577,12 +544,12 @@ public class JsonUtil {
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}
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final Map<?, ?> m = (Map<?, ?>)json.get(ContentSummary.class.getSimpleName());
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final long length = (Long)m.get("length");
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final long fileCount = (Long)m.get("fileCount");
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final long directoryCount = (Long)m.get("directoryCount");
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final long quota = (Long)m.get("quota");
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final long spaceConsumed = (Long)m.get("spaceConsumed");
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final long spaceQuota = (Long)m.get("spaceQuota");
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final long length = ((Number) m.get("length")).longValue();
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final long fileCount = ((Number) m.get("fileCount")).longValue();
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final long directoryCount = ((Number) m.get("directoryCount")).longValue();
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final long quota = ((Number) m.get("quota")).longValue();
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final long spaceConsumed = ((Number) m.get("spaceConsumed")).longValue();
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final long spaceQuota = ((Number) m.get("spaceQuota")).longValue();
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return new ContentSummary(length, fileCount, directoryCount,
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quota, spaceConsumed, spaceQuota);
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@ -610,7 +577,7 @@ public class JsonUtil {
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final Map<?, ?> m = (Map<?, ?>)json.get(FileChecksum.class.getSimpleName());
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final String algorithm = (String)m.get("algorithm");
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final int length = (int)(long)(Long)m.get("length");
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final int length = ((Number) m.get("length")).intValue();
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final byte[] bytes = StringUtils.hexStringToByte((String)m.get("bytes"));
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final DataInputStream in = new DataInputStream(new ByteArrayInputStream(bytes));
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@ -654,7 +621,13 @@ public class JsonUtil {
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m.put("owner", status.getOwner());
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m.put("group", status.getGroup());
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m.put("stickyBit", status.isStickyBit());
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m.put("entries", status.getEntries());
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final List<String> stringEntries = new ArrayList<>();
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for (AclEntry entry : status.getEntries()) {
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stringEntries.add(entry.toString());
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}
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m.put("entries", stringEntries);
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FsPermission perm = status.getPermission();
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if (perm != null) {
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m.put("permission", toString(perm));
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@ -668,7 +641,13 @@ public class JsonUtil {
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final Map<String, Map<String, Object>> finalMap =
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new TreeMap<String, Map<String, Object>>();
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finalMap.put(AclStatus.class.getSimpleName(), m);
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return JSON.toString(finalMap);
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ObjectMapper mapper = new ObjectMapper();
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try {
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return mapper.writeValueAsString(finalMap);
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} catch (IOException ignored) {
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}
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return null;
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}
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/** Convert a Json map to a AclStatus object. */
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@ -689,11 +668,11 @@ public class JsonUtil {
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(Boolean) m.get("aclBit"), (Boolean) m.get("encBit"));
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aclStatusBuilder.setPermission(permission);
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}
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final Object[] entries = (Object[]) m.get("entries");
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final List<?> entries = (List<?>) m.get("entries");
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List<AclEntry> aclEntryList = new ArrayList<AclEntry>();
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for (int i = 0; i < entries.length; i++) {
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AclEntry aclEntry = AclEntry.parseAclEntry((String) entries[i], true);
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for (Object entry : entries) {
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AclEntry aclEntry = AclEntry.parseAclEntry((String) entry, true);
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aclEntryList.add(aclEntry);
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}
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aclStatusBuilder.addEntries(aclEntryList);
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@ -732,7 +711,8 @@ public class JsonUtil {
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final XAttrCodec encoding) throws IOException {
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final Map<String, Object> finalMap = new TreeMap<String, Object>();
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finalMap.put("XAttrs", toJsonArray(xAttrs, encoding));
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return JSON.toString(finalMap);
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ObjectMapper mapper = new ObjectMapper();
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return mapper.writeValueAsString(finalMap);
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}
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public static String toJsonString(final List<XAttr> xAttrs)
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@ -741,10 +721,11 @@ public class JsonUtil {
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for (XAttr xAttr : xAttrs) {
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names.add(XAttrHelper.getPrefixName(xAttr));
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}
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String ret = JSON.toString(names);
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ObjectMapper mapper = new ObjectMapper();
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String ret = mapper.writeValueAsString(names);
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final Map<String, Object> finalMap = new TreeMap<String, Object>();
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finalMap.put("XAttrNames", ret);
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return JSON.toString(finalMap);
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return mapper.writeValueAsString(finalMap);
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}
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public static byte[] getXAttr(final Map<?, ?> json, final String name)
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@ -766,8 +747,7 @@ public class JsonUtil {
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if (json == null) {
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return null;
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}
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return toXAttrMap((Object[])json.get("XAttrs"));
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return toXAttrMap(getList(json, "XAttrs"));
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}
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public static List<String> toXAttrNames(final Map<?, ?> json)
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@ -777,26 +757,27 @@ public class JsonUtil {
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}
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final String namesInJson = (String) json.get("XAttrNames");
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final Object[] xattrs = (Object[]) JSON.parse(namesInJson);
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ObjectReader reader = new ObjectMapper().reader(List.class);
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final List<Object> xattrs = reader.readValue(namesInJson);
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final List<String> names =
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Lists.newArrayListWithCapacity(json.keySet().size());
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for (int i = 0; i < xattrs.length; i++) {
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names.add((String) (xattrs[i]));
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for (Object xattr : xattrs) {
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names.add((String) xattr);
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}
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return names;
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}
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|
||||
private static Map<String, byte[]> toXAttrMap(final Object[] objects)
|
||||
private static Map<String, byte[]> toXAttrMap(final List<?> objects)
|
||||
throws IOException {
|
||||
if (objects == null) {
|
||||
return null;
|
||||
} else if (objects.length == 0) {
|
||||
} else if (objects.isEmpty()) {
|
||||
return Maps.newHashMap();
|
||||
} else {
|
||||
final Map<String, byte[]> xAttrs = Maps.newHashMap();
|
||||
for(int i = 0; i < objects.length; i++) {
|
||||
Map<?, ?> m = (Map<?, ?>) objects[i];
|
||||
for (Object object : objects) {
|
||||
Map<?, ?> m = (Map<?, ?>) object;
|
||||
String name = (String) m.get("name");
|
||||
String value = (String) m.get("value");
|
||||
xAttrs.put(name, decodeXAttrValue(value));
|
||||
|
|
|
|||
|
|
@ -22,7 +22,6 @@ import java.io.BufferedOutputStream;
|
|||
import java.io.FileNotFoundException;
|
||||
import java.io.IOException;
|
||||
import java.io.InputStream;
|
||||
import java.io.InputStreamReader;
|
||||
import java.net.HttpURLConnection;
|
||||
import java.net.InetSocketAddress;
|
||||
import java.net.MalformedURLException;
|
||||
|
|
@ -81,10 +80,9 @@ import org.apache.hadoop.security.token.TokenSelector;
|
|||
import org.apache.hadoop.security.token.delegation.AbstractDelegationTokenSelector;
|
||||
import org.apache.hadoop.util.Progressable;
|
||||
import org.apache.hadoop.util.StringUtils;
|
||||
import org.mortbay.util.ajax.JSON;
|
||||
import org.codehaus.jackson.map.ObjectMapper;
|
||||
|
||||
import com.google.common.annotations.VisibleForTesting;
|
||||
import com.google.common.base.Charsets;
|
||||
import com.google.common.base.Preconditions;
|
||||
import com.google.common.collect.Lists;
|
||||
|
||||
|
|
@ -323,7 +321,8 @@ public class WebHdfsFileSystem extends FileSystem
|
|||
+ "\" (parsed=\"" + parsed + "\")");
|
||||
}
|
||||
}
|
||||
return (Map<?, ?>)JSON.parse(new InputStreamReader(in, Charsets.UTF_8));
|
||||
ObjectMapper mapper = new ObjectMapper();
|
||||
return mapper.reader(Map.class).readValue(in);
|
||||
} finally {
|
||||
in.close();
|
||||
}
|
||||
|
|
@ -1291,13 +1290,15 @@ public class WebHdfsFileSystem extends FileSystem
|
|||
@Override
|
||||
FileStatus[] decodeResponse(Map<?,?> json) {
|
||||
final Map<?, ?> rootmap = (Map<?, ?>)json.get(FileStatus.class.getSimpleName() + "es");
|
||||
final Object[] array = (Object[])rootmap.get(FileStatus.class.getSimpleName());
|
||||
final List<?> array = JsonUtil.getList(
|
||||
rootmap, FileStatus.class.getSimpleName());
|
||||
|
||||
//convert FileStatus
|
||||
final FileStatus[] statuses = new FileStatus[array.length];
|
||||
for (int i = 0; i < array.length; i++) {
|
||||
final Map<?, ?> m = (Map<?, ?>)array[i];
|
||||
statuses[i] = makeQualified(JsonUtil.toFileStatus(m, false), f);
|
||||
final FileStatus[] statuses = new FileStatus[array.size()];
|
||||
int i = 0;
|
||||
for (Object object : array) {
|
||||
final Map<?, ?> m = (Map<?, ?>) object;
|
||||
statuses[i++] = makeQualified(JsonUtil.toFileStatus(m, false), f);
|
||||
}
|
||||
return statuses;
|
||||
}
|
||||
|
|
@ -1348,7 +1349,7 @@ public class WebHdfsFileSystem extends FileSystem
|
|||
new TokenArgumentParam(token.encodeToUrlString())) {
|
||||
@Override
|
||||
Long decodeResponse(Map<?,?> json) throws IOException {
|
||||
return (Long) json.get("long");
|
||||
return ((Number) json.get("long")).longValue();
|
||||
}
|
||||
}.run();
|
||||
}
|
||||
|
|
|
|||
|
|
@ -42,9 +42,10 @@ import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
|
|||
import org.apache.hadoop.hdfs.protocol.HdfsFileStatus;
|
||||
import org.apache.hadoop.hdfs.server.namenode.INodeId;
|
||||
import org.apache.hadoop.util.Time;
|
||||
import org.codehaus.jackson.map.ObjectMapper;
|
||||
import org.codehaus.jackson.map.ObjectReader;
|
||||
import org.junit.Assert;
|
||||
import org.junit.Test;
|
||||
import org.mortbay.util.ajax.JSON;
|
||||
|
||||
import com.google.common.collect.Lists;
|
||||
|
||||
|
|
@ -58,7 +59,7 @@ public class TestJsonUtil {
|
|||
}
|
||||
|
||||
@Test
|
||||
public void testHdfsFileStatus() {
|
||||
public void testHdfsFileStatus() throws IOException {
|
||||
final long now = Time.now();
|
||||
final String parent = "/dir";
|
||||
final HdfsFileStatus status = new HdfsFileStatus(1001L, false, 3, 1L << 26,
|
||||
|
|
@ -70,7 +71,9 @@ public class TestJsonUtil {
|
|||
System.out.println("fstatus = " + fstatus);
|
||||
final String json = JsonUtil.toJsonString(status, true);
|
||||
System.out.println("json = " + json.replace(",", ",\n "));
|
||||
final HdfsFileStatus s2 = JsonUtil.toFileStatus((Map<?, ?>)JSON.parse(json), true);
|
||||
ObjectReader reader = new ObjectMapper().reader(Map.class);
|
||||
final HdfsFileStatus s2 =
|
||||
JsonUtil.toFileStatus((Map<?, ?>) reader.readValue(json), true);
|
||||
final FileStatus fs2 = toFileStatus(s2, parent);
|
||||
System.out.println("s2 = " + s2);
|
||||
System.out.println("fs2 = " + fs2);
|
||||
|
|
@ -153,10 +156,11 @@ public class TestJsonUtil {
|
|||
}
|
||||
|
||||
@Test
|
||||
public void testToAclStatus() {
|
||||
public void testToAclStatus() throws IOException {
|
||||
String jsonString =
|
||||
"{\"AclStatus\":{\"entries\":[\"user::rwx\",\"user:user1:rw-\",\"group::rw-\",\"other::r-x\"],\"group\":\"supergroup\",\"owner\":\"testuser\",\"stickyBit\":false}}";
|
||||
Map<?, ?> json = (Map<?, ?>) JSON.parse(jsonString);
|
||||
ObjectReader reader = new ObjectMapper().reader(Map.class);
|
||||
Map<?, ?> json = reader.readValue(jsonString);
|
||||
|
||||
List<AclEntry> aclSpec =
|
||||
Lists.newArrayList(aclEntry(ACCESS, USER, ALL),
|
||||
|
|
@ -215,7 +219,8 @@ public class TestJsonUtil {
|
|||
String jsonString =
|
||||
"{\"XAttrs\":[{\"name\":\"user.a1\",\"value\":\"0x313233\"}," +
|
||||
"{\"name\":\"user.a2\",\"value\":\"0x313131\"}]}";
|
||||
Map<?, ?> json = (Map<?, ?>)JSON.parse(jsonString);
|
||||
ObjectReader reader = new ObjectMapper().reader(Map.class);
|
||||
Map<?, ?> json = reader.readValue(jsonString);
|
||||
XAttr xAttr1 = (new XAttr.Builder()).setNameSpace(XAttr.NameSpace.USER).
|
||||
setName("a1").setValue(XAttrCodec.decodeValue("0x313233")).build();
|
||||
XAttr xAttr2 = (new XAttr.Builder()).setNameSpace(XAttr.NameSpace.USER).
|
||||
|
|
@ -240,7 +245,8 @@ public class TestJsonUtil {
|
|||
String jsonString =
|
||||
"{\"XAttrs\":[{\"name\":\"user.a1\",\"value\":\"0x313233\"}," +
|
||||
"{\"name\":\"user.a2\",\"value\":\"0x313131\"}]}";
|
||||
Map<?, ?> json = (Map<?, ?>) JSON.parse(jsonString);
|
||||
ObjectReader reader = new ObjectMapper().reader(Map.class);
|
||||
Map<?, ?> json = reader.readValue(jsonString);
|
||||
|
||||
// Get xattr: user.a2
|
||||
byte[] value = JsonUtil.getXAttr(json, "user.a2");
|
||||
|
|
|
|||
Loading…
Reference in New Issue