com.glaf.core.config.MutilPropertyPlaceholderConfigurer.java Source code

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Here is the source code for com.glaf.core.config.MutilPropertyPlaceholderConfigurer.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.glaf.core.config;

import java.io.IOException;
import java.util.Map.Entry;
import java.util.Properties;
import java.util.Set;

import org.apache.commons.lang3.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.config.PropertyPlaceholderConfigurer;

/**
 * ???????
 * 
 */
public class MutilPropertyPlaceholderConfigurer extends PropertyPlaceholderConfigurer implements InitializingBean {

    protected static final Log LOG = LogFactory.getLog(MutilPropertyPlaceholderConfigurer.class);

    public static final String DEVELOPMENT = "DEV";

    public static final String PRODUCTION = "PRD";

    public static final String RUN_MODE = "run.mode";

    // ?
    private Properties properties;

    @Override
    public void afterPropertiesSet() throws Exception {

    }

    /**
     * @return the mode
     */
    public String getMode() {
        return properties.getProperty(RUN_MODE);
    }

    /**
     * ?
     * 
     * @param key
     * @return
     */
    public String getProperty(String key) {
        return resolvePlaceholder(key, properties);
    }

    @Override
    protected Properties mergeProperties() throws IOException {
        Properties mergeProperties = super.mergeProperties();
        // ????properties
        this.properties = new Properties();
        // ?,mode
        String mode = System.getProperty(RUN_MODE);
        if (StringUtils.isEmpty(mode)) {
            String str = mergeProperties.getProperty(RUN_MODE);
            mode = str != null ? str : PRODUCTION;
        }
        LOG.info("####run mode:" + mode);
        properties.put(RUN_MODE, mode);
        String[] modes = mode.split(",");
        Set<Entry<Object, Object>> es = mergeProperties.entrySet();
        for (Entry<Object, Object> entry : es) {
            String key = (String) entry.getKey();
            int idx = key.lastIndexOf('_');
            String realKey = idx == -1 ? key : key.substring(0, idx);
            if (!properties.containsKey(realKey)) {
                Object value = null;
                for (String md : modes) {
                    value = mergeProperties.get(realKey + "_" + md);
                    if (value != null) {
                        properties.put(realKey, value);
                        break;
                    }
                }
                if (value == null) {
                    value = mergeProperties.get(realKey);
                    if (value != null) {
                        properties.put(realKey, value);
                    }
                }
            }
        }
        logger.debug(properties);
        return properties;
    }
}