private static NodeConfiguration getNodeConfiguration()

in modules/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/WebAppHelper.java [232:337]
101 lines of code
31 McCabe index (conditional complexity)

    private static NodeConfiguration getNodeConfiguration(WebContextConfigurator configurator) throws IOException,
        URISyntaxException {
        NodeConfiguration configuration = null;
        String nodeConfigURI = configurator.getInitParameter(NODE_CONFIGURATION);
        ServletContext servletContext = configurator.getServletContext();
        if (nodeConfigURI != null) {
            URL url = getResource(servletContext, nodeConfigURI);
            configuration = factory.loadConfiguration(url.openStream(), url);
        } else {
            configuration = factory.createNodeConfiguration();

            boolean explicitContributions = false;
            Enumeration<String> names = configurator.getInitParameterNames();
            while (names.hasMoreElements()) {
                String name = names.nextElement();
                if (name.equals(CONTRIBUTION) || name.startsWith(CONTRIBUTION + ".")) {
                    explicitContributions = true;
                    // We need to have a way to select one or more folders within the webapp as the contributions
                    String listOfValues = configurator.getInitParameter(name);
                    if (listOfValues != null) {
                        for (String path : parse(listOfValues)) {
                            if ("".equals(path)) {
                                continue;
                            }
                            File f = new File(getResource(servletContext, path).toURI());
                            configuration.addContribution(f.toURI().toURL());
                        }
                    }
                } else if (name.equals(CONTRIBUTIONS) || name.startsWith(CONTRIBUTIONS + ".")) {
                    explicitContributions = true;
                    String listOfValues = (String)configurator.getInitParameter(name);
                    if (listOfValues != null) {
                        for (String path : parse(listOfValues)) {
                            if ("".equals(path)) {
                                continue;
                            }
                            File f = new File(getResource(servletContext, path).toURI());
                            if (f.isDirectory()) {
                                for (File n : f.listFiles()) {
                                    configuration.addContribution(n.toURI().toURL());
                                }
                            } else {
                                configuration.addContribution(f.toURI().toURL());
                            }
                        }
                    }
                }
            }

            String compositeURI = configurator.getInitParameter(COMPOSITE_URI);
            if (compositeURI == null) {
                compositeURI = getDefaultComposite(configurator);
            }
            URL composite = getResource(servletContext, compositeURI);
            if (configuration.getContributions().isEmpty() || (!explicitContributions && composite != null)) {
                if ("".equals(configurator.getName())) {
                    // Add the root of the web application
                    configuration.addContribution(getResource(servletContext, ROOT));
                } else {
                    // Add a dummy contribution
                    configuration.addContribution(URI.create("sca:contributions/" + configurator.getName()), null);
                }
            }
            if (composite != null) {
                configuration.getContributions().get(0).addDeploymentComposite(composite);
            }
            if (!explicitContributions) {
                URL url = getResource(servletContext, DEFAULT_CONTRIBUTIONS);
                if (url != null) {
                    File f = new File(url.toURI());
                    if (f.isDirectory()) {
                        for (File n : f.listFiles()) {
                            configuration.addContribution(n.toURI().toURL());
                        }
                    }
                }
            }
            String nodeURI = configurator.getInitParameter(NODE_URI);
            if (nodeURI == null) {
                nodeURI = getResource(servletContext, ROOT).getPath() + configurator.getName();
            }
            configuration.setURI(nodeURI);
            String domainURI = configurator.getInitParameter(DOMAIN_URI);
            if (domainURI != null) {
                configuration.setDomainURI(domainURI);
            } else {
                domainURI = configurator.getInitParameter("org.apache.tuscany.sca.defaultDomainURI");
                if (domainURI == null) {
                    domainURI = System.getProperty(DOMAIN_URI_PROP);
                }
                if (domainURI != null) {
                    configuration.setDomainURI(getDomainName(domainURI));
                    configuration.setDomainRegistryURI(domainURI);
                }
            }
            String domainRegistryURI = configurator.getInitParameter(DOMAIN_REGISTRY_URI);
            if (domainRegistryURI != null) {
                configuration.setDomainRegistryURI(domainRegistryURI);
            }
        }
        configuration.setAttribute(ServletContext.class.getName(), servletContext);
        if (configurator instanceof ServletConfigurator) {
            configuration.setAttribute(Servlet.class.getName(), ((ServletConfigurator)configurator).servlet);
        }
        return configuration;
    }