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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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 com.alipay.sofa.common.log.proxy;

import com.alipay.sofa.common.log.LoggerSpaceManager;
import com.alipay.sofa.common.space.SpaceId;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.concurrent.ConcurrentHashMap;

/**
 * Created by [email protected] on 2016/12/5.
 */
public class TemporaryILoggerFactoryPool {

    private static final ConcurrentHashMap temporaryILoggerFactoryMap = new ConcurrentHashMap();
    private static final Logger                                                             logger                     = LoggerFactory
                                                                                                                           .getLogger(LoggerSpaceManager.class);

    public static TemporaryILoggerFactory get(String space, ClassLoader spaceClassLoader) {
        return get(new SpaceId(space), spaceClassLoader);
    }

    public static TemporaryILoggerFactory get(SpaceId spaceId, ClassLoader spaceClassLoader) {
        //get from local cache by key {spaceClassLoader+ spacename};
        TemporaryILoggerFactory temporaryILoggerFactory = temporaryILoggerFactoryMap
            .get(new SpaceIdWithClassloader(spaceId, spaceClassLoader));
        if (temporaryILoggerFactory != null) {
            return temporaryILoggerFactory;
        }

        //create new one
        temporaryILoggerFactory = new TemporaryILoggerFactory(spaceId, spaceClassLoader, logger);

        //put it to cache ;
        temporaryILoggerFactoryMap.putIfAbsent(
            new SpaceIdWithClassloader(spaceId, spaceClassLoader), temporaryILoggerFactory);
        return temporaryILoggerFactory;
    }

    private static class SpaceIdWithClassloader {
        private SpaceId     spaceId;
        private ClassLoader classLoader;

        public SpaceIdWithClassloader() {
        }

        public SpaceIdWithClassloader(SpaceId spaceId, ClassLoader classLoader) {
            this.spaceId = spaceId;
            this.classLoader = classLoader;
        }

        public SpaceId getSpaceId() {
            return spaceId;
        }

        public void setSpaceId(SpaceId spaceId) {
            this.spaceId = spaceId;
        }

        public ClassLoader getClassLoader() {
            return classLoader;
        }

        public void setClassLoader(ClassLoader classLoader) {
            this.classLoader = classLoader;
        }

        @Override
        public boolean equals(Object o) {
            if (this == o) {
                return true;
            }
            if (o == null || getClass() != o.getClass()) {
                return false;
            }

            SpaceIdWithClassloader that = (SpaceIdWithClassloader) o;

            if (spaceId != null ? !spaceId.equals(that.spaceId) : that.spaceId != null)
                return false;
            return classLoader != null ? classLoader.equals(that.classLoader)
                : that.classLoader == null;

        }

        @Override
        public int hashCode() {
            int result = spaceId != null ? spaceId.hashCode() : 0;
            result = 31 * result + (classLoader != null ? classLoader.hashCode() : 0);
            return result;
        }
    }
}