com.github.codingdebugallday.extension.ExtensionFactory Maven / Gradle / Ivy

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package com.github.codingdebugallday.extension;

import java.util.Collections;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.util.StringUtils;

/**
 * 
 * 静态的扩展工厂
 * 
 *
 * @author isaac 2020/6/16 14:32
 * @since 1.0
 */
public class ExtensionFactory {

    private static final Logger LOG = LoggerFactory.getLogger(ExtensionFactory.class);

    /**
     * 扩展工厂 key 扩展的key  值为扩展的实现
     */
    private static final Map PLUGIN_EXTENSION_MAP = new ConcurrentHashMap<>();

    private ExtensionFactory() {
    }

    public static void addExtension(AbstractExtension abstractExtension) {
        if (abstractExtension == null) {
            LOG.warn("add failure, abstractExtension is null");
            return;
        }
        String key = abstractExtension.key();
        if (StringUtils.isEmpty(key)) {
            LOG.error("add failure, key is empty");
        }
        PLUGIN_EXTENSION_MAP.put(key, abstractExtension);
    }

    static Map getPluginExtension() {
        return Collections.unmodifiableMap(PLUGIN_EXTENSION_MAP);
    }

}