Java tutorial
/* * Copyright 2016 Intuit * * 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 com.intuit.autumn.web; import com.google.common.collect.ImmutableMap; import com.google.common.collect.ImmutableMap.Builder; import com.google.common.util.concurrent.Service; import org.slf4j.Logger; import java.util.Properties; import java.util.Set; import static com.google.common.collect.Sets.newHashSet; import static com.intuit.autumn.utils.PropertyFactory.create; import static com.intuit.autumn.utils.PropertyFactory.getProperty; import static org.apache.commons.lang.BooleanUtils.toBoolean; import static org.slf4j.LoggerFactory.getLogger; /** * A provider for enabled web services. */ public class WebServices { public static final String PROPERTY_NAME = "/web.properties"; private static final ImmutableMap<String, Class<? extends Service>> WEB_SERVICES = new Builder<String, Class<? extends Service>>() .put("application.http.enabled", HttpService.class).put("application.https.enabled", HttpsService.class) .build(); private static final Logger LOGGER = getLogger(WebServices.class); private WebServices() { throw new UnsupportedOperationException(); } /** * Http services configuration utility. * * @return collection of enabled http services. */ public static Set<Class<? extends Service>> getEnabledWebServices() { LOGGER.debug("getting enabled web services"); Properties properties = create(PROPERTY_NAME, WebModule.class); Set<Class<? extends Service>> webServices = newHashSet(); loadIfEnabled(properties, webServices, "application.http.enabled"); loadIfEnabled(properties, webServices, "application.https.enabled"); LOGGER.debug("got enabled web services count: {}", webServices.size()); return webServices; } private static void loadIfEnabled(final Properties properties, Set<Class<? extends Service>> services, final String key) { if (toBoolean(getProperty(key, properties))) { services.add(WEB_SERVICES.get(key)); } } }