Example usage for org.apache.hadoop.hdfs.protocol HdfsFileStatus getSymlink

Introduction

In this page you can find the example usage for org.apache.hadoop.hdfs.protocol HdfsFileStatus getSymlink.

Prototype

Path getSymlink() throws IOException;

Source Link

Document

See FileStatus#getSymlink() .

Usage

From source file:com.bigstep.datalake.DLFileSystem.java

License:Apache License

private FileStatus makeQualified(HdfsFileStatus f, Path parent) {

    return new FileStatus(f.getLen(), f.isDir(), f.getReplication(), f.getBlockSize(), f.getModificationTime(),
            f.getAccessTime(), f.getPermission(), f.getOwner(), f.getGroup(),
            f.isSymlink() ? new Path(f.getSymlink()) : null,
            makeQualified(f.getFullPath(parent).makeQualified(getUri(), getWorkingDirectory())));
}

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From source file:com.bigstep.datalake.JsonUtil.java

License:Apache License

/**
 * Convert a HdfsFileStatus object to a Json string.
 * @param status input status// www . jav a2s.c  o  m
 * @param includeType type to use
 * @return the json
 */
public static String toJsonString(final HdfsFileStatus status, boolean includeType) {
    if (status == null) {
        return null;
    }
    final Map<String, Object> m = new TreeMap<String, Object>();
    m.put("pathSuffix", status.getLocalName());
    m.put("type", PathType.valueOf(status));
    if (status.isSymlink()) {
        m.put("symlink", status.getSymlink());
    }

    m.put("length", status.getLen());
    m.put("owner", status.getOwner());
    m.put("group", status.getGroup());
    FsPermission perm = status.getPermission();
    m.put("permission", toString(perm));
    if (perm.getAclBit()) {
        m.put("aclBit", true);
    }
    if (perm.getEncryptedBit()) {
        m.put("encBit", true);
    }
    m.put("accessTime", status.getAccessTime());
    m.put("modificationTime", status.getModificationTime());
    m.put("blockSize", status.getBlockSize());
    m.put("replication", status.getReplication());
    m.put("fileId", status.getFileId());
    m.put("childrenNum", status.getChildrenNum());
    m.put("storagePolicy", status.getStoragePolicy());

    Gson gson = new Gson();

    return includeType ? toJsonString(FileStatus.class, m) : gson.toJson(m);

}

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From source file:common.NameNode.java

License:Apache License

/** @inheritDoc */
public String getLinkTarget(String path) throws IOException {
    myMetrics.numgetLinkTargetOps.inc();
    /* Resolves the first symlink in the given path, returning a
     * new path consisting of the target of the symlink and any 
     * remaining path components from the original path.
     */// w  w w .  j  a va 2  s  . c o m
    try {
        HdfsFileStatus stat = namesystem.getFileInfo(path, false);
        if (stat != null) {
            // NB: getSymlink throws IOException if !stat.isSymlink() 
            return stat.getSymlink();
        }
    } catch (UnresolvedPathException e) {
        return e.getResolvedPath().toString();
    } catch (UnresolvedLinkException e) {
        // The NameNode should only throw an UnresolvedPathException
        throw new AssertionError("UnresolvedLinkException thrown");
    }
    return null;
}

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