Example usage for org.apache.hadoop.ipc RemoteException unwrapRemoteException

Introduction

In this page you can find the example usage for org.apache.hadoop.ipc RemoteException unwrapRemoteException.

Prototype

public IOException unwrapRemoteException() 

Source Link

Document

Instantiate and return the exception wrapped up by this remote exception.

Usage

From source file:com.alibaba.wasp.client.WaspAdmin.java

License:Apache License

/**
 * Helper function called by other execute functions.
 *//*from   www  . j a va  2 s  .co m*/
private <V> V executeCallable(Callable<V> function) throws IOException {
    try {
        return function.call();
    } catch (RemoteException re) {
        throw re.unwrapRemoteException();
    } catch (IOException e) {
        throw e;
    } catch (ServiceException se) {
        throw ProtobufUtil.getRemoteException(se);
    } catch (Exception e) {
        // This should not happen...
        throw new IOException("Unexpected exception when calling master", e);
    }
}

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From source file:com.alibaba.wasp.ipc.NettyTransceiver.java

License:Apache License

private Message processResponse(List<ByteBuffer> res, Class<? extends VersionedProtocol> protocol,
        RpcRequestBody param) throws IOException {
    ByteBufferInputStream in = new ByteBufferInputStream(res);
    try {/*from w  ww  .j av a 2  s  . c om*/
        // See NettyServer.prepareResponse for where we write out the response.
        // It writes the call.id (int), a boolean signifying any error (and if
        // so the exception name/trace), and the response bytes

        // Read the call id.
        RpcResponseHeader response = RpcResponseHeader.parseDelimitedFrom(in);
        if (response == null) {
            // When the stream is closed, protobuf doesn't raise an EOFException,
            // instead, it returns a null message object.
            throw new EOFException();
        }

        Status status = response.getStatus();
        if (status == Status.SUCCESS) {
            Message rpcResponseType;
            try {
                rpcResponseType = ProtobufRpcEngine.Invoker.getReturnProtoType(
                        ProtobufRpcEngine.Server.getMethod(protocol, param.getMethodName()));
            } catch (Exception e) {
                throw new RuntimeException(e); // local exception
            }
            Builder builder = rpcResponseType.newBuilderForType();
            builder.mergeDelimitedFrom(in);
            Message value = builder.build();

            return value;
        } else if (status == Status.ERROR) {
            RpcException exceptionResponse = RpcException.parseDelimitedFrom(in);
            RemoteException remoteException = new RemoteException(exceptionResponse.getExceptionName(),
                    exceptionResponse.getStackTrace());
            throw remoteException.unwrapRemoteException();
        } else if (status == Status.FATAL) {
            RpcException exceptionResponse = RpcException.parseDelimitedFrom(in);
            // Close the connection
            LOG.error("Fatal Exception.", exceptionResponse);
            RemoteException remoteException = new RemoteException(exceptionResponse.getExceptionName(),
                    exceptionResponse.getStackTrace());
            throw remoteException.unwrapRemoteException();
        } else {
            throw new IOException("What happened?");
        }
    } catch (Exception e) {
        if (e instanceof RemoteException) {
            ((RemoteException) e).unwrapRemoteException();
        }
        if (e instanceof IOException) {
            throw (IOException) e;
        } else {
            throw new IOException(e);
        }
    }
}

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From source file:com.mellanox.r4h.DFSClient.java

License:Apache License

/**
 * Create one snapshot.//  w ww . j  a v  a  2 s.c  om
 * 
 * @param snapshotRoot
 *            The directory where the snapshot is to be taken
 * @param snapshotName
 *            Name of the snapshot
 * @return the snapshot path.
 * @see ClientProtocol#createSnapshot(String, String)
 */
public String createSnapshot(String snapshotRoot, String snapshotName) throws IOException {
    checkOpen();
    TraceScope scope = Trace.startSpan("createSnapshot", traceSampler);
    try {
        return namenode.createSnapshot(snapshotRoot, snapshotName);
    } catch (RemoteException re) {
        throw re.unwrapRemoteException();
    } finally {
        scope.close();
    }
}

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From source file:com.mellanox.r4h.DFSClient.java

License:Apache License

/**
 * Delete a snapshot of a snapshottable directory.
 * //from   www  .  j a v  a  2  s .  c  o m
 * @param snapshotRoot
 *            The snapshottable directory that the
 *            to-be-deleted snapshot belongs to
 * @param snapshotName
 *            The name of the to-be-deleted snapshot
 * @throws IOException
 * @see ClientProtocol#deleteSnapshot(String, String)
 */
public void deleteSnapshot(String snapshotRoot, String snapshotName) throws IOException {
    checkOpen();
    TraceScope scope = Trace.startSpan("deleteSnapshot", traceSampler);
    try {
        namenode.deleteSnapshot(snapshotRoot, snapshotName);
    } catch (RemoteException re) {
        throw re.unwrapRemoteException();
    } finally {
        scope.close();
    }
}

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From source file:com.mellanox.r4h.DFSClient.java

License:Apache License

/**
 * Rename a snapshot.//  w w  w  .j  av  a 2  s  . c  o  m
 * 
 * @param snapshotDir
 *            The directory path where the snapshot was taken
 * @param snapshotOldName
 *            Old name of the snapshot
 * @param snapshotNewName
 *            New name of the snapshot
 * @throws IOException
 * @see ClientProtocol#renameSnapshot(String, String, String)
 */
public void renameSnapshot(String snapshotDir, String snapshotOldName, String snapshotNewName)
        throws IOException {
    checkOpen();
    TraceScope scope = Trace.startSpan("renameSnapshot", traceSampler);
    try {
        namenode.renameSnapshot(snapshotDir, snapshotOldName, snapshotNewName);
    } catch (RemoteException re) {
        throw re.unwrapRemoteException();
    } finally {
        scope.close();
    }
}

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From source file:com.mellanox.r4h.DFSClient.java

License:Apache License

/**
 * Get all the current snapshottable directories.
 * //from   ww  w .jav a 2s  .  com
 * @return All the current snapshottable directories
 * @throws IOException
 * @see ClientProtocol#getSnapshottableDirListing()
 */
public SnapshottableDirectoryStatus[] getSnapshottableDirListing() throws IOException {
    checkOpen();
    TraceScope scope = Trace.startSpan("getSnapshottableDirListing", traceSampler);
    try {
        return namenode.getSnapshottableDirListing();
    } catch (RemoteException re) {
        throw re.unwrapRemoteException();
    } finally {
        scope.close();
    }
}

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From source file:com.mellanox.r4h.DFSClient.java

License:Apache License

/**
 * Allow snapshot on a directory.//from ww w. j  av  a  2 s  .  c o m
 * 
 * @see ClientProtocol#allowSnapshot(String snapshotRoot)
 */
public void allowSnapshot(String snapshotRoot) throws IOException {
    checkOpen();
    TraceScope scope = Trace.startSpan("allowSnapshot", traceSampler);
    try {
        namenode.allowSnapshot(snapshotRoot);
    } catch (RemoteException re) {
        throw re.unwrapRemoteException();
    } finally {
        scope.close();
    }
}

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From source file:com.mellanox.r4h.DFSClient.java

License:Apache License

/**
 * Disallow snapshot on a directory./*from  w  w  w  .j  ava  2 s  . c  o  m*/
 * 
 * @see ClientProtocol#disallowSnapshot(String snapshotRoot)
 */
public void disallowSnapshot(String snapshotRoot) throws IOException {
    checkOpen();
    TraceScope scope = Trace.startSpan("disallowSnapshot", traceSampler);
    try {
        namenode.disallowSnapshot(snapshotRoot);
    } catch (RemoteException re) {
        throw re.unwrapRemoteException();
    } finally {
        scope.close();
    }
}

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From source file:com.mellanox.r4h.DFSClient.java

License:Apache License

/**
 * Get the difference between two snapshots, or between a snapshot and the
 * current tree of a directory./*www  .j  a  v  a  2 s  . com*/
 * 
 * @see ClientProtocol#getSnapshotDiffReport(String, String, String)
 */
public SnapshotDiffReport getSnapshotDiffReport(String snapshotDir, String fromSnapshot, String toSnapshot)
        throws IOException {
    checkOpen();
    TraceScope scope = Trace.startSpan("getSnapshotDiffReport", traceSampler);
    try {
        return namenode.getSnapshotDiffReport(snapshotDir, fromSnapshot, toSnapshot);
    } catch (RemoteException re) {
        throw re.unwrapRemoteException();
    } finally {
        scope.close();
    }
}

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From source file:com.mellanox.r4h.DFSClient.java

License:Apache License

public long addCacheDirective(CacheDirectiveInfo info, EnumSet<CacheFlag> flags) throws IOException {
    checkOpen();//from  www .  j  a v a 2 s.  c  om
    TraceScope scope = Trace.startSpan("addCacheDirective", traceSampler);
    try {
        return namenode.addCacheDirective(info, flags);
    } catch (RemoteException re) {
        throw re.unwrapRemoteException();
    } finally {
        scope.close();
    }
}

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