BaseController.java

/**
 * Copyright 2014 Global Crop Diversity Trust
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 **/

package org.genesys.server.mvc;

import java.util.Locale;

import javax.servlet.http.HttpServletRequest;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.MessageSource;
import org.springframework.context.i18n.LocaleContextHolder;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

public abstract class BaseController {

	protected Logger LOG = LoggerFactory.getLogger(getClass());

	protected static final String ANONYMOUS_USER = "anonymousUser";

	protected static final String EXCEPTION_NOT_AUTHORIZED = "User is not authorized.";
	protected static final String EXCEPTION_NOT_ORGANIZATION_MEMBER = "User is not a member of organization.";

	@Autowired
	protected MessageSource messageSource;

	protected HttpServletRequest getRequest() {
		return ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
	}

	protected Locale getLocale() {
		return LocaleContextHolder.getLocale();
	}

	protected boolean hasRole(String role) {
		final Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
		if (authentication != null) {
			for (final GrantedAuthority grantedRole : authentication.getAuthorities()) {
				if (grantedRole.getAuthority().equals(role)) {
					return true;
				}
			}
		}
		return false;
	}

	// logs exception and returns it's message
	protected String simpleExceptionHandler(Throwable th) {
		LOG.error(th.getMessage(), th);
		return th.getMessage();
	}

}