Java tutorial
/** * Copyright (C) 2015 The Gravitee team (http://gravitee.io) * * 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 io.gravitee.gateway.policy.impl.processor.spring; import io.gravitee.gateway.policy.PolicyContextProviderFactory; import io.gravitee.policy.api.PolicyContext; import io.gravitee.policy.api.PolicyContextProvider; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.context.annotation.AnnotationConfigApplicationContext; import org.springframework.context.annotation.Import; import java.util.Arrays; import java.util.List; import java.util.stream.Collectors; /** * @author David BRASSELY (david at gravitee.io) * @author GraviteeSource Team */ public class SpringPolicyContextProviderFactory implements PolicyContextProviderFactory { private static final Logger LOGGER = LoggerFactory.getLogger(SpringPolicyContextProviderFactory.class); @Override public boolean canHandle(PolicyContext policyContext) { return policyContext.getClass().getAnnotation(Import.class) != null; } public PolicyContextProvider create(PolicyContext policyContext) { Import importAnnotation = policyContext.getClass().getAnnotation(Import.class); List<Class<?>> importClasses = Arrays.asList(importAnnotation.value()); LOGGER.info("Initializing a Spring context provider from @Import annotation: {}", String.join(",", importClasses.stream().map(Class::getName).collect(Collectors.toSet()))); AnnotationConfigApplicationContext policyApplicationContext = new AnnotationConfigApplicationContext(); policyApplicationContext.setClassLoader(policyContext.getClass().getClassLoader()); importClasses.forEach(policyApplicationContext::register); // TODO: set the parent application context ? // pluginContext.setEnvironment(applicationContextParent.getEnvironment()); // pluginContext.setParent(applicationContextParent); policyApplicationContext.refresh(); return new SpringPolicyContextProvider(policyApplicationContext); } }