Examples with CanceledExecutionException org.knime.core.node.CanceledExecutionException used on opensource projects

Example 81 with CanceledExecutionException

use of org.knime.core.node.CanceledExecutionException in project knime-core by knime.

the class FileUtil method copy.

/**
 * Copies a file. The implementation uses a temporary buffer of 8kB. This
 * method will report progress to the given execution monitor and will also
 * check a canceled status. The copy process will report progress in the
 * full range of the execution monitor. Consider to use a sub-execution
 * monitor if the copy process is only a small part of the entire work.
 *
 * @param file The file to copy.
 * @param destination The destination file, fully qualified (do not provide
 *            a directory).
 * @param exec The execution monitor for progress information.
 * @throws CanceledExecutionException If canceled. The destination file will
 *             be deleted.
 * @throws IOException If that fail for any reason.
 */
public static void copy(final File file, final File destination, final ExecutionMonitor exec) throws IOException, CanceledExecutionException {
    final long size = file.length();
    byte[] cache = new byte[BUFF_SIZE];
    CanceledExecutionException cee = null;
    try (OutputStream copyOutStream = new FileOutputStream(destination);
        InputStream copyInStream = new FileInputStream(file)) {
        int read;
        long processed = 0;
        exec.setMessage("Copying \"" + file.getName() + "\"");
        while ((read = copyInStream.read(cache, 0, cache.length)) > 0) {
            copyOutStream.write(cache, 0, read);
            processed += read;
            exec.setProgress(processed / (double) size);
            try {
                exec.checkCanceled();
            } catch (CanceledExecutionException c) {
                cee = c;
                break;
            }
        }
    }
    // delete destination file if canceled.
    if (cee != null) {
        if (!destination.delete()) {
            LOGGER.warn("Unable to delete \"" + destination.getName() + "\" after copying has been canceled.");
        }
        throw cee;
    }
}

Example 82 with CanceledExecutionException

use of org.knime.core.node.CanceledExecutionException in project knime-core by knime.

the class NativeNodeContainer method performExecuteNode.

/**
 * {@inheritDoc}
 */
@Override
public NodeContainerExecutionStatus performExecuteNode(final PortObject[] inObjects) {
    ExecutionContext ec = createExecutionContext();
    m_node.openFileStoreHandler(ec);
    ExecutionEnvironment ev = getExecutionEnvironment();
    boolean success;
    try {
        ec.checkCanceled();
        success = true;
    } catch (CanceledExecutionException e) {
        String errorString = "Execution canceled";
        LOGGER.warn(errorString);
        setNodeMessage(new NodeMessage(NodeMessage.Type.WARNING, errorString));
        success = false;
    }
    NodeContext.pushContext(this);
    try {
        // execute node outside any synchronization!
        success = success && m_node.execute(inObjects, ev, ec);
    } finally {
        NodeContext.removeLastContext();
    }
    if (success) {
        // output tables are made publicly available (for blobs)
        putOutputTablesIntoGlobalRepository(ec);
    } else {
    // something went wrong: reset and configure node to reach
    // a solid state again will be done by WorkflowManager (in
    // doAfterExecute().
    }
    return success ? NodeContainerExecutionStatus.SUCCESS : NodeContainerExecutionStatus.FAILURE;
}