public void doTag()

in jelly-tags/jetty/src/main/java/org/apache/commons/jelly/tags/jetty/JettyHttpServerTag.java [109:177]
52 lines of code
10 McCabe index (conditional complexity)

    public void doTag(XMLOutput xmlOutput) throws JellyTagException {

        try {
            URL logFileURL = getContext().getResource(getLogFileName());
            _logSink.setFilename(logFileURL.getPath());
            _logSink.start();
        } catch (Exception ex ) {
            log.error(ex.getLocalizedMessage());
        }

        // allow nested tags first, e.g body
        invokeBody(xmlOutput);

        try {
            // if no listeners create a default port listener
            if (_server.getListeners().length == 0) {
                SocketListener listener=new SocketListener();
                listener.setPort(DEFAULT_PORT);
                listener.setHost(DEFAULT_HOST);
                _server.addListener(listener);
            }

            // if no context/s create a default context
            if (_server.getContexts().length == 0) {
                log.info("Creating a default context");
                // Create a context
                HttpContext context = _server.getContext(DEFAULT_HOST,
                                                        DEFAULT_CONTEXT_PATH);

                // Serve static content from the context
                URL baseResourceURL = getContext().getResource(DEFAULT_RESOURCE_BASE);
                Resource resource = Resource.newResource(baseResourceURL);
                context.setBaseResource(resource);
                _server.addContext(context);
            }
        }
        catch (UnknownHostException e) {
            throw new JellyTagException(e);
        }
        catch (IOException e) {
            throw new JellyTagException(e);
        }

        // check that all the contexts have at least one handler
        // if not then add a default resource handler and a not found handler
        HttpContext[] allContexts = _server.getContexts();
        for (int i = 0; i < allContexts.length; i++) {
            HttpContext currContext = allContexts[i];
            if (currContext.getHandlers().length == 0) {
                log.info("Adding resource and not found handlers to context:" +
                         currContext.getContextPath());
                currContext.addHandler(new ResourceHandler());
                currContext.addHandler(new NotFoundHandler());
            }
        }

        // Start the http server
        try {
            _server.start();
        }
        catch (MultiException e) {
            throw new JellyTagException(e);
        }

        // set variable to value if required
        if (getVar() != null) {
            getContext().setVariable(getVar(), _server);
        }
    }