Java tutorial
/* * Copyright (c) 2016, WSO2 Inc. (http://www.wso2.org) All Rights Reserved. * * WSO2 Inc. licenses this file to you 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.wso2.carbon.identity.oauth.endpoint.impl; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.wso2.carbon.identity.oauth.endpoint.auth.BasicAuthenticationHandler; import org.wso2.carbon.identity.oauth.endpoint.auth.OAuthAuthenticationHandler; import org.wso2.carbon.identity.oauth.endpoint.auth.OAuthAuthenticatorConfigReader; import org.wso2.carbon.identity.oauth.endpoint.auth.OAuthAuthenticatorRegistry; import javax.servlet.ServletContextEvent; import javax.servlet.ServletContextListener; import java.util.List; /** * This performs one-time initialization tasks at the application startup. */ public class ApplicationInitializer implements ServletContextListener { private Log log = LogFactory.getLog(ApplicationInitializer.class); @Override public void contextInitialized(ServletContextEvent servletContextEvent) { if (log.isDebugEnabled()) { log.debug("Initializing OAuth Webapp..."); } //Initialize OAuth Authentication Registry initOAuthAuthenticatorRegistry(); } @Override public void contextDestroyed(ServletContextEvent servletContextEvent) { // Do nothing } private void initOAuthAuthenticatorRegistry() { OAuthAuthenticatorRegistry oauthAuthRegistry = OAuthAuthenticatorRegistry.getInstance(); if (oauthAuthRegistry != null) { //set authenticators after building auth config OAuthAuthenticatorConfigReader configReader = new OAuthAuthenticatorConfigReader(); List<OAuthAuthenticationHandler> OAuthAuthenticators = configReader.buildOAuthAuthenticators(); if (OAuthAuthenticators != null && !OAuthAuthenticators.isEmpty()) { for (OAuthAuthenticationHandler oauthAuthenticator : OAuthAuthenticators) { oauthAuthRegistry.setAuthenticator(oauthAuthenticator); } } else { //initialize default basic auth authenticator and set it in the auth registry. BasicAuthenticationHandler basicAuthHandler = new BasicAuthenticationHandler(); basicAuthHandler.setDefaultPriority(); oauthAuthRegistry.setAuthenticator(basicAuthHandler); } } } }