public void start()

in modules/binding-http-runtime/src/main/java/org/apache/tuscany/sca/binding/http/provider/HTTPServiceBindingProvider.java [127:232]
90 lines of code
26 McCabe index (conditional complexity)

    public void start() {
        // Get the invokers for the supported operations
        RuntimeComponentService componentService = (RuntimeComponentService) service;
        RuntimeWire wire = componentService.getRuntimeWire(binding);
        Servlet servlet = null;
        bindingListenerServlet = new HTTPBindingListenerServlet(binding, messageFactory );
        for (InvocationChain invocationChain : wire.getInvocationChains()) {
            Operation operation = invocationChain.getTargetOperation();
            String operationName = operation.getName();
            if (binding.getOperationSelector() != null || binding.getRequestWireFormat() != null) {
                Invoker bindingInvoker = wire.getBindingInvocationChain().getHeadInvoker();
                servlet = new HTTPRRBListenerServlet(binding, bindingInvoker, messageFactory);
                break;
            } else if (operationName.equals("get")) { 
                Invoker getInvoker = invocationChain.getHeadInvoker();
               	bindingListenerServlet.setGetInvoker(getInvoker);
                servlet = bindingListenerServlet;
            } else if (operationName.equals("conditionalGet")) {
                Invoker conditionalGetInvoker = invocationChain.getHeadInvoker();
               	bindingListenerServlet.setConditionalGetInvoker(conditionalGetInvoker);
                servlet = bindingListenerServlet;
            } else if (operationName.equals("delete")) {
                Invoker deleteInvoker = invocationChain.getHeadInvoker();
               	bindingListenerServlet.setDeleteInvoker(deleteInvoker);
                servlet = bindingListenerServlet;
            } else if (operationName.equals("conditionalDelete")) {
                Invoker conditionalDeleteInvoker = invocationChain.getHeadInvoker();
               	bindingListenerServlet.setConditionalDeleteInvoker(conditionalDeleteInvoker);
                servlet = bindingListenerServlet;
            } else if (operationName.equals("put")) {
                Invoker putInvoker = invocationChain.getHeadInvoker();
               	bindingListenerServlet.setPutInvoker(putInvoker);
                servlet = bindingListenerServlet;
            } else if (operationName.equals("conditionalPut")) {
                Invoker conditionalPutInvoker = invocationChain.getHeadInvoker();
               	bindingListenerServlet.setConditionalPutInvoker(conditionalPutInvoker);
                servlet = bindingListenerServlet;
            } else if (operationName.equals("post")) {
                Invoker postInvoker = invocationChain.getHeadInvoker();
               	bindingListenerServlet.setPostInvoker(postInvoker);
                servlet = bindingListenerServlet;
            } else if (operationName.equals("conditionalPost")) {
                Invoker conditionalPostInvoker = invocationChain.getHeadInvoker();
               	bindingListenerServlet.setConditionalPostInvoker(conditionalPostInvoker);
                servlet = bindingListenerServlet;
            } else if (operationName.equals("service")) {
                Invoker serviceInvoker = invocationChain.getHeadInvoker();
                servlet = new HTTPServiceListenerServlet(binding, serviceInvoker, messageFactory);
                break;
            } 
        }
        if (servlet == null) {
            throw new IllegalStateException("No get or service method found on the service");
        }
                
        // Create our HTTP service listener Servlet and register it with the
        // Servlet host
        servletMapping = binding.getURI();
        if (!servletMapping.endsWith("/")) {
            servletMapping += "/";
        }
        if (!servletMapping.endsWith("*")) {
            servletMapping += "*";
        }
        

        SecurityContext securityContext = new SecurityContext();
        boolean isConfidentialityRequired = false;
        boolean isAuthenticationRequired = false;
        
        
        // find out which policies are active
        if (binding instanceof PolicySetAttachPoint) {
            List<Intent> intents = ((PolicySetAttachPoint)binding).getRequiredIntents();
            for(Intent intent : intents) {
                if (intent.getName().equals(AUTEHTICATION_INTENT)) {
                    isAuthenticationRequired = true;
                } else if (intent.getName().equals(CONFIDENTIALITY_INTENT)) {
                    isConfidentialityRequired = true;
                }
            }
            
            List<PolicySet> policySets = ((PolicySetAttachPoint)binding).getApplicablePolicySets();
            for (PolicySet ps : policySets) {
                for (Object p : ps.getPolicies()) {
                    if (ConfidentialityPolicy.class.isInstance(p) && isConfidentialityRequired) {
                        //Handle enabling and configuring SSL
                        ConfidentialityPolicy confidentialityPolicy = (ConfidentialityPolicy)p;                        
                        
                        securityContext.setSSLEnabled(true);
                        securityContext.setSSLProperties(confidentialityPolicy.toProperties());
                    } else if(AuthenticationConfigurationPolicy.class.isInstance(p) && isAuthenticationRequired) {
                        // Handle authentication and user configuration
                        AuthenticationConfigurationPolicy authenticationConfiguration = (AuthenticationConfigurationPolicy)p;
                        
                        securityContext.setAuthenticationEnabled(true);
                        securityContext.getUsers().clear();
                        securityContext.getUsers().addAll(authenticationConfiguration.getUsers());
                    }
                }
            }
        }        
        
        
        servletHost.addServletMapping(servletMapping, servlet, securityContext);
    }