com.github.lothar.security.acl.config.AclConfiguration.java Source code

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Here is the source code for com.github.lothar.security.acl.config.AclConfiguration.java

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/*******************************************************************************
 * Copyright 2002-2016 the original author or authors.
 *
 * 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.github.lothar.security.acl.config;

import java.util.Map;

import javax.annotation.Resource;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.event.ContextRefreshedEvent;
import org.springframework.context.event.EventListener;

import com.github.lothar.security.acl.AclStrategy;
import com.github.lothar.security.acl.AclStrategyProvider;
import com.github.lothar.security.acl.AclStrategyProviderImpl;
import com.github.lothar.security.acl.SimpleAclStrategy;
import com.github.lothar.security.acl.activation.AclActivationUtils;
import com.github.lothar.security.acl.activation.AclSecurityActivator;
import com.github.lothar.security.acl.compound.AclComposersRegistry;
import com.github.lothar.security.acl.compound.AclStrategyComposer;
import com.github.lothar.security.acl.compound.AclStrategyComposerProvider;

@Configuration
@EnableConfigurationProperties(AclProperties.class)
public class AclConfiguration {

    private SimpleAclStrategy allowAllStrategy = new SimpleAclStrategy();
    @Resource
    private ApplicationContext applicationContext;
    private Logger logger = LoggerFactory.getLogger(AclConfiguration.class);

    @Bean
    public AclStrategyComposer strategyComposer(AclStrategyComposerProvider strategyComposerProvider) {
        return new AclStrategyComposer(strategyComposerProvider);
    }

    @Bean
    @ConditionalOnMissingBean(AclStrategyComposerProvider.class)
    public AclStrategyComposerProvider aclComposersRegistry() {
        return new AclComposersRegistry();
    }

    @Bean
    @ConditionalOnMissingBean(AclStrategyProvider.class)
    public AclStrategyProvider aclStrategyProvider(AclProperties properties,
            AclSecurityActivator aclSecurityActivator) {
        return new AclStrategyProviderImpl(properties, aclSecurityActivator, allowAllStrategy);
    }

    @Bean
    public BeanPostProcessor aclStrategyPostProcessor(AclStrategy defaultAclStrategy) {
        return new BeanPostProcessor() {
            @Override
            public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
                if (bean instanceof AclStrategyProvider) {
                    AclStrategyProvider aclStrategyProvider = (AclStrategyProvider) bean;
                    aclStrategyProvider.setDefaultStrategy(defaultAclStrategy);
                    logger.debug("Set defaultAclStrategy : {}", defaultAclStrategy);
                }
                return bean;
            }

            @Override
            public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
                return bean;
            }
        };
    }

    @Bean
    public SimpleAclStrategy allowAllStrategy() {
        return allowAllStrategy;
    }

    @Bean
    @ConditionalOnMissingBean(name = "defaultAclStrategy")
    public SimpleAclStrategy defaultAclStrategy() {
        return allowAllStrategy;
    }

    @Bean
    public SimpleAclStrategy denyAllStrategy() {
        return new SimpleAclStrategy();
    }

    @EventListener(ContextRefreshedEvent.class)
    public void logStrategies() {
        if (logger.isDebugEnabled()) {
            Map<String, AclStrategy> strategies = applicationContext.getBeansOfType(AclStrategy.class);
            strategies.entrySet().stream() //
                    .forEach(e -> logger.debug("Strategy {}: {}", e.getKey(), e.getValue()));
        }
    }

    @Bean
    public AclSecurityActivator aclSecurityActivator(AclProperties properties) {
        return new AclSecurityActivator(!properties.isDisabled());
    }

    @Bean
    public AclActivationUtils aclActivationUtils(AclSecurityActivator aclSecurityActivator) {
        return new AclActivationUtils(aclSecurityActivator);
    }
}