Example usage for org.apache.hadoop.fs.permission AclStatus getGroup

Introduction

In this page you can find the example usage for org.apache.hadoop.fs.permission AclStatus getGroup.

Prototype

public String getGroup() 

Source Link

Document

Returns the file group.

Usage

From source file:alluxio.underfs.hdfs.acl.SupportedHdfsAclProvider.java

License:Apache License

@Override
public Pair<AccessControlList, DefaultAccessControlList> getAcl(FileSystem hdfs, String path)
        throws IOException {
    AclStatus hdfsAcl;
    Path filePath = new Path(path);
    boolean isDir = hdfs.isDirectory(filePath);
    try {/*from   w w  w  . j av  a2  s  .c o m*/
        hdfsAcl = hdfs.getAclStatus(filePath);
    } catch (AclException e) {
        // When dfs.namenode.acls.enabled is false, getAclStatus throws AclException.
        return new Pair<>(null, null);
    }
    AccessControlList acl = new AccessControlList();
    DefaultAccessControlList defaultAcl = new DefaultAccessControlList();

    acl.setOwningUser(hdfsAcl.getOwner());
    acl.setOwningGroup(hdfsAcl.getGroup());
    defaultAcl.setOwningUser(hdfsAcl.getOwner());
    defaultAcl.setOwningGroup(hdfsAcl.getGroup());
    for (AclEntry entry : hdfsAcl.getEntries()) {
        alluxio.security.authorization.AclEntry.Builder builder = new alluxio.security.authorization.AclEntry.Builder();
        builder.setType(getAclEntryType(entry));
        builder.setSubject(entry.getName() == null ? "" : entry.getName());
        FsAction permission = entry.getPermission();
        if (permission.implies(FsAction.READ)) {
            builder.addAction(AclAction.READ);
        } else if (permission.implies(FsAction.WRITE)) {
            builder.addAction(AclAction.WRITE);
        } else if (permission.implies(FsAction.EXECUTE)) {
            builder.addAction(AclAction.EXECUTE);
        }
        if (entry.getScope().equals(AclEntryScope.ACCESS)) {
            acl.setEntry(builder.build());
        } else {
            // default ACL, must be a directory
            defaultAcl.setEntry(builder.build());
        }
    }
    if (isDir) {
        return new Pair<>(acl, defaultAcl);
    } else {
        // a null defaultACL indicates this is a file
        return new Pair<>(acl, null);
    }
}

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

License:Apache License

/** Convert a AclStatus object to a Json string. */
public static String toJsonString(final AclStatus status) {
    if (status == null) {
        return null;
    }/*from  w  w w  .  ja va  2  s.  co m*/

    final Map<String, Object> m = new TreeMap<String, Object>();
    m.put("owner", status.getOwner());
    m.put("group", status.getGroup());
    m.put("stickyBit", status.isStickyBit());

    final List<String> stringEntries = new ArrayList<>();
    for (AclEntry entry : status.getEntries()) {
        stringEntries.add(entry.toString());
    }
    m.put("entries", stringEntries);

    FsPermission perm = status.getPermission();
    if (perm != null) {
        m.put("permission", toString(perm));
        if (perm.getAclBit()) {
            m.put("aclBit", true);
        }
        if (perm.getEncryptedBit()) {
            m.put("encBit", true);
        }
    }
    final Map<String, Map<String, Object>> finalMap = new TreeMap<String, Map<String, Object>>();
    finalMap.put(AclStatus.class.getSimpleName(), m);

    Gson gson = new Gson();
    return gson.toJson(finalMap);
}

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