Examples with WrappedException org.eclipse.elk.core.util.WrappedException used on opensource projects

Example 1 with WrappedException

use of org.eclipse.elk.core.util.WrappedException in project elk by eclipse.

the class GraphvizTool method initialize.

/**
 * Initialize the Graphviz tool instance by starting the dot process and the watcher
 * thread as necessary. The given command line arguments are appended to the default
 * arguments.
 *
 * @param arguments command line arguments to be added to the default list of arguments.
 *                  May be {@code null} or empty.
 */
public synchronized void initialize(final List<String> arguments) {
    if (watchdog == null) {
        // start the watcher thread for timeout checking
        watchdog = new Watchdog();
        watchdog.setName("Graphviz Watchdog");
        watchdog.start();
    }
    if (process == null) {
        String dotExecutable = getDotExecutable();
        // assemble the final list of command-line arguments
        List<String> args = Lists.newArrayList(dotExecutable, ARG_NOWARNINGS, ARG_INVERTYAXIS, ARG_COMMAND + command);
        if (arguments != null) {
            args.addAll(arguments);
        }
        // create the process
        try {
            process = Runtime.getRuntime().exec(args.toArray(new String[args.size()]));
        } catch (IOException exception) {
            throw new WrappedException("Failed to start Graphviz process." + " Please check your Graphviz installation.", exception);
        }
    }
}

Example 2 with WrappedException

use of org.eclipse.elk.core.util.WrappedException in project elk by eclipse.

the class GmfLayoutEditPolicy method handleSplineConnection.

/**
 * Handle the ELK SplineConnection class without a direct reference to it. Reflection is used
 * to avoid a dependency to its containing plugin.
 *
 * @param edgeFigure
 *            the edge figure instance
 * @param edgeRouting
 *            the edge routing returned by the layout algorithm
 * @return {@code true} if an approximation should be used to represent the spline
 */
private static boolean handleSplineConnection(final IFigure edgeFigure, final EdgeRouting edgeRouting) {
    boolean isSC;
    Class<?> clazz = edgeFigure.getClass();
    do {
        String canonicalName = clazz.getCanonicalName();
        // in some cases, eg anonymous classes, the canonical name may be null
        isSC = canonicalName != null && canonicalName.equals(SPLINE_CONNECTION);
        clazz = clazz.getSuperclass();
    } while (!isSC && clazz != null);
    if (isSC) {
        clazz = edgeFigure.getClass();
        try {
            if (edgeRouting == EdgeRouting.SPLINES) {
                // SplineConnection.SPLINE_CUBIC
                clazz.getMethod("setSplineMode", int.class).invoke(edgeFigure, 1);
            } else {
                // SplineConnection.SPLINE_OFF
                clazz.getMethod("setSplineMode", int.class).invoke(edgeFigure, 0);
            }
            return false;
        } catch (Exception exception) {
            throw new WrappedException(exception);
        }
    }
    // no spline connection class, but spline representation is requested
    return edgeRouting == EdgeRouting.SPLINES;
}

Example 3 with WrappedException

use of org.eclipse.elk.core.util.WrappedException in project elk by eclipse.

the class GraphvizLayoutProvider method writeDotGraph.

/**
 * Writes a serialized version of the Graphviz model to the given output stream.
 *
 * @param graphvizModel
 *            Graphviz model to serialize
 * @param monitor
 *            a monitor to which progress is reported
 * @param debugMode
 *            whether debug mode is active
 * @param resourceSet
 *            the resource set for serialization
 */
private void writeDotGraph(final GraphvizModel graphvizModel, final IElkProgressMonitor monitor, final boolean debugMode, final XtextResourceSet resourceSet) {
    monitor.begin("Serialize model", 1);
    OutputStream outputStream = graphvizTool.input();
    // enable debug output if needed
    FileOutputStream debugStream = null;
    if (debugMode) {
        try {
            String path = System.getProperty("user.home");
            if (path.endsWith(File.separator)) {
                path += "tmp" + File.separator + "graphviz";
            } else {
                path += File.separator + "tmp" + File.separator + "graphviz";
            }
            new File(path).mkdirs();
            debugStream = new FileOutputStream(new File(path + File.separator + debugFileBase() + "-in.dot"));
            outputStream = new ForkedOutputStream(outputStream, debugStream);
        } catch (Exception exception) {
            System.out.println("GraphvizLayouter: Could not initialize debug output: " + exception.getMessage());
        }
    }
    try {
        XtextResource resource = (XtextResource) resourceSet.createResource(URI.createURI("output.graphviz_dot"));
        resource.getContents().add(graphvizModel);
        /* KIPRA-1498
             * We disable formatting and validation when saving the resource. Enabling it lead to
             * possible ConcurrentModificationExceptions in Xtext.
             */
        Map<Object, Object> saveOptions = SaveOptions.newBuilder().noValidation().getOptions().toOptionsMap();
        resource.save(outputStream, saveOptions);
        outputStream.write('\n');
        outputStream.flush();
    } catch (IOException exception) {
        graphvizTool.cleanup(Cleanup.ERROR);
        throw new WrappedException("Failed to send the graph to Graphviz.", exception);
    } finally {
        if (debugStream != null) {
            try {
                debugStream.close();
            } catch (IOException exception) {
            // ignore exception
            }
        }
        monitor.done();
    }
}

Example 4 with WrappedException

use of org.eclipse.elk.core.util.WrappedException in project elk by eclipse.

the class GraphvizLayoutProvider method readDotGraph.

/**
 * Reads and parses a serialized Graphviz model.
 *
 * @param monitor
 *            a monitor to which progress is reported
 * @param debugMode
 *            whether debug mode is active
 * @param resourceSet
 *            the resoure set for parsing
 * @return an instance of the parsed graphviz model
 */
private GraphvizModel readDotGraph(final IElkProgressMonitor monitor, final boolean debugMode, final XtextResourceSet resourceSet) {
    monitor.begin("Parse output", 1);
    InputStream inputStream = graphvizTool.output();
    // enable debug output if needed
    FileOutputStream debugStream = null;
    if (debugMode) {
        try {
            String path = System.getProperty("user.home");
            if (path.endsWith(File.separator)) {
                path += "tmp" + File.separator + "graphviz";
            } else {
                path += File.separator + "tmp" + File.separator + "graphviz";
            }
            new File(path).mkdirs();
            debugStream = new FileOutputStream(new File(path + File.separator + debugFileBase() + "-out.dot"));
            inputStream = new ForwardingInputStream(inputStream, debugStream);
        } catch (Exception exception) {
            System.out.println("GraphvizLayouter: Could not initialize debug output: " + exception.getMessage());
        }
    }
    // parse the output stream of the dot process
    XtextResource resource = (XtextResource) resourceSet.createResource(URI.createURI("input.graphviz_dot"));
    try {
        resource.load(inputStream, null);
    } catch (IOException exception) {
        graphvizTool.cleanup(Cleanup.ERROR);
        throw new WrappedException("Failed to read Graphviz output.", exception);
    } finally {
        if (debugStream != null) {
            try {
                debugStream.close();
            } catch (IOException exception) {
            // ignore exception
            }
        }
    }
    // analyze errors and retrieve parse result
    if (!resource.getErrors().isEmpty()) {
        StringBuilder errorString = new StringBuilder("Errors in Graphviz output:");
        for (Diagnostic diagnostic : resource.getErrors()) {
            errorString.append("\n" + diagnostic.getLine() + ": " + diagnostic.getMessage());
        }
        graphvizTool.cleanup(Cleanup.ERROR);
        throw new GraphvizException(errorString.toString());
    }
    GraphvizModel graphvizModel = (GraphvizModel) resource.getParseResult().getRootASTElement();
    if (graphvizModel == null || graphvizModel.getGraphs().isEmpty()) {
        graphvizTool.cleanup(Cleanup.ERROR);
        throw new GraphvizException("No output from the Graphviz process." + " Try increasing the timeout value in the Eclipse Diagram Layout preferences.");
    }
    monitor.done();
    return graphvizModel;
}