com.dtstack.jlogstash.factory.OutputFactory.java Source code

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Here is the source code for com.dtstack.jlogstash.factory.OutputFactory.java

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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.dtstack.jlogstash.factory;

import java.lang.reflect.Constructor;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import com.dtstack.jlogstash.outputs.BaseOutput;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;

/**
 * 
 * Reason: TODO ADD REASON(?)
 * Date: 2016831 ?1:26:39
 * Company: www.dtstack.com
 * @author sishu.yss
 *
 */
public class OutputFactory extends InstanceFactory {

    private static Map<String, Class<?>> outputsClassLoader = Maps.newConcurrentMap();

    private final static String PLUGINTYPE = "output";

    @SuppressWarnings("rawtypes")
    private static BaseOutput getInstance(String outputType, Map outputConfig, Class<?> outputClass)
            throws Exception {
        configInstance(outputClass, outputConfig);//static field
        Constructor<?> ctor = outputClass.getConstructor(Map.class);
        BaseOutput baseOutput = (BaseOutput) ctor.newInstance(outputConfig);
        configInstance(baseOutput, outputConfig);//?static field
        baseOutput.prepare();
        return baseOutput;
    }

    @SuppressWarnings({ "rawtypes", "unchecked" })
    public static List<BaseOutput> getBatchInstance(List<Map> outputs) throws Exception {
        if (outputs == null || outputs.size() == 0)
            return null;
        List<BaseOutput> baseoutputs = Lists.newArrayList();
        for (int i = 0; i < outputs.size(); i++) {
            Iterator<Entry<String, Map>> outputIT = outputs.get(i).entrySet().iterator();
            while (outputIT.hasNext()) {
                Map.Entry<String, Map> outputEntry = outputIT.next();
                String outputType = outputEntry.getKey();
                Map outputConfig = outputEntry.getValue();
                String className = getClassName(outputType, PLUGINTYPE);
                String key = String.format("%s%d", className, i);
                Class<?> outputClass = outputsClassLoader.get(key);
                if (outputClass == null) {
                    outputClass = getPluginClass(outputType, PLUGINTYPE, className);
                    outputsClassLoader.put(key, outputClass);
                }
                if (outputConfig == null)
                    outputConfig = Maps.newLinkedHashMap();
                baseoutputs.add(getInstance(outputType, outputConfig, outputClass));
            }
        }
        return baseoutputs;
    }
}