public static ProviderRegistrationResult registerSaslProviders()

in client/src/main/java/org/apache/qpid/client/security/DynamicSaslRegistrar.java [69:148]
73 lines of code
9 McCabe index (conditional complexity)

    public static ProviderRegistrationResult registerSaslProviders()
    {
        _logger.debug("public static void registerSaslProviders(): called");
        ProviderRegistrationResult result = ProviderRegistrationResult.FAILED;
        // Open the SASL properties file, using the default name is one is not specified.
        String filename = System.getProperty(FILE_PROPERTY);
        InputStream is =
            FileUtils.openFileOrDefaultResource(filename, DEFAULT_RESOURCE_NAME,
                DynamicSaslRegistrar.class.getClassLoader());

        try
        {
            Properties props = new Properties();
            props.load(is);

            _logger.debug("props = " + props);

            Map<String, Class<? extends SaslClientFactory>> factories = parseProperties(props);

            if (factories.size() > 0)
            {
                // Ensure we are used before the defaults
                JCAProvider qpidProvider = new JCAProvider(factories);
                if (Security.insertProviderAt(qpidProvider, 1) == -1)
                {
                    Provider registeredProvider = findProvider(JCAProvider.QPID_CLIENT_SASL_PROVIDER_NAME);
                    if (registeredProvider == null)
                    {
                        result = ProviderRegistrationResult.FAILED;
                        _logger.error("Unable to load custom SASL providers.");
                    }
                    else if (registeredProvider.equals(qpidProvider))
                    {
                        result = ProviderRegistrationResult.EQUAL_ALREADY_REGISTERED;
                        _logger.debug("Custom SASL provider is already registered with equal properties.");
                    }
                    else
                    {
                        result = ProviderRegistrationResult.DIFFERENT_ALREADY_REGISTERED;
                        _logger.warn("Custom SASL provider was already registered with different properties.");
                        if (_logger.isDebugEnabled())
                        {
                            _logger.debug("Custom SASL provider " + registeredProvider + " properties: " + new HashMap<Object, Object>(registeredProvider));
                        }
                    }
                }
                else
                {
                    result = ProviderRegistrationResult.SUCCEEDED;
                    _logger.info("Additional SASL providers successfully registered.");
                }
            }
            else
            {
                result = ProviderRegistrationResult.NO_SASL_FACTORIES;
                _logger.warn("No additional SASL factories found to register.");
            }
        }
        catch (IOException e)
        {
            result = ProviderRegistrationResult.FAILED;
            _logger.error("Error reading properties: " + e, e);
        }
        finally
        {
            if (is != null)
            {
                try
                {
                    is.close();

                }
                catch (IOException e)
                {
                    _logger.error("Unable to close properties stream: " + e, e);
                }
            }
        }
        return result;
    }