001/**
002 * Copyright (c) 2015-2022, Michael Yang 杨福海 (fuhai999@gmail.com).
003 * <p>
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 * <p>
008 * http://www.apache.org/licenses/LICENSE-2.0
009 * <p>
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package io.jboot.aop;
017
018import com.jfinal.aop.Interceptor;
019import io.jboot.aop.annotation.AutoLoad;
020import io.jboot.core.weight.WeightUtil;
021import io.jboot.utils.ClassScanner;
022import io.jboot.utils.ClassUtil;
023
024import java.lang.reflect.Method;
025import java.util.Collection;
026import java.util.List;
027import java.util.concurrent.CopyOnWriteArrayList;
028import java.util.function.Predicate;
029
030public class InterceptorBuilderManager{
031
032
033    private static InterceptorBuilderManager me = new InterceptorBuilderManager();
034
035
036    public static InterceptorBuilderManager me() {
037        return me;
038    }
039
040    private InterceptorBuilderManager() {
041        List<Class<InterceptorBuilder>> builderClasses = ClassScanner.scanSubClass(InterceptorBuilder.class,true);
042        for (Class<InterceptorBuilder> builderClass : builderClasses){
043            if (builderClass.getAnnotation(AutoLoad.class) != null){
044                addInterceptorBuilder(ClassUtil.newInstance(builderClass,false));
045            }
046        }
047
048        InterceptorCache.clear();
049    }
050
051    private List<InterceptorBuilder> interceptorBuilders = new CopyOnWriteArrayList();
052
053
054    public List<InterceptorBuilder> getInterceptorBuilders() {
055        return interceptorBuilders;
056    }
057
058
059
060    public void addInterceptorBuilder(InterceptorBuilder interceptorBuilder) {
061        if (interceptorBuilder == null) {
062            throw new NullPointerException("interceptorBuilder must not be null.");
063        }
064        this.interceptorBuilders.add(interceptorBuilder);
065        WeightUtil.sort(this.interceptorBuilders);
066
067        InterceptorCache.clear();
068    }
069
070
071
072
073    public void addInterceptorBuilder(Collection<InterceptorBuilder> interceptorBuilders) {
074        if (interceptorBuilders == null) {
075            throw new NullPointerException("interceptorBuilder must not be null.");
076        }
077        this.interceptorBuilders.addAll(interceptorBuilders);
078        WeightUtil.sort(this.interceptorBuilders);
079
080        InterceptorCache.clear();
081    }
082
083
084
085    public void removeInterceptorBuilder(Predicate<? super InterceptorBuilder> filter){
086        if (interceptorBuilders != null && !interceptorBuilders.isEmpty()){
087            if (interceptorBuilders.removeIf(filter)) {
088                InterceptorCache.clear();
089            }
090        }
091    }
092
093
094
095    public Interceptor[] build(Class<?> targetClass, Method method, Interceptor[] inters) {
096        if (interceptorBuilders != null && interceptorBuilders.size() > 0) {
097            Interceptors interceptors = new Interceptors(inters);
098            for (InterceptorBuilder builder : interceptorBuilders) {
099                builder.build(targetClass, method, interceptors);
100            }
101            return interceptors.toArray();
102        }
103        return inters;
104    }
105
106
107
108}