// Create a new block object, because the block inside LocatedBlock at
// namenode is of type BlockInfo.
Block blk = new Block(lb.get(0).getBlock());
Token<BlockTokenIdentifier> token = lb.get(0).getBlockToken();
final DatanodeInfo dnInfo = lb.get(0).getLocations()[0];
ClientDatanodeProtocol proxy = aUgi
.doAs(new PrivilegedExceptionAction<ClientDatanodeProtocol>() {
@Override
public ClientDatanodeProtocol run() throws Exception {
return DFSClient.createClientDatanodeProtocolProxy(
dnInfo, conf, 60000);
}
});
//This should succeed
BlockLocalPathInfo blpi = proxy.getBlockLocalPathInfo(blk, token);
Assert.assertEquals(dn.data.getBlockLocalPathInfo(blk).getBlockPath(),
blpi.getBlockPath());
RPC.stopProxy(proxy);
// Now try with a not allowed user.
UserGroupInformation bUgi = UserGroupInformation
.createRemoteUser("notalloweduser");
proxy = bUgi
.doAs(new PrivilegedExceptionAction<ClientDatanodeProtocol>() {
@Override
public ClientDatanodeProtocol run() throws Exception {
return DFSClient.createClientDatanodeProtocolProxy(
dnInfo, conf, 60000);
}
});
try {
proxy.getBlockLocalPathInfo(blk, token);
Assert.fail("The call should have failed as " + bUgi.getShortUserName()
+ " is not allowed to call getBlockLocalPathInfo");
} catch (IOException ex) {
Assert.assertTrue(ex.getMessage().contains(
"not allowed to call getBlockLocalPathInfo"));