com.dianping.lion.util.JsonParser.java Source code

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Here is the source code for com.dianping.lion.util.JsonParser.java

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/**
 * Project: com.dianping.lion.lion-api-0.0.1-new
 * 
 * File Created at 2012-7-31
 * $Id$
 * 
 * Copyright 2010 dianping.com.
 * All rights reserved.
 *
 * This software is the confidential and proprietary information of
 * Dianping Company. ("Confidential Information").  You shall not
 * disclose such Confidential Information and shall use it only in
 * accordance with the terms of the license agreement you entered into
 * with dianping.com.
 */
package com.dianping.lion.util;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.json.JSONObject;

import com.dianping.lion.entity.Config;
import com.dianping.lion.entity.ConfigInstance;
import com.dianping.lion.entity.Environment;
import com.dianping.lion.service.ConfigService;
import com.dianping.lion.service.EnvironmentService;

/**
 * JsonParser ?DB?json???config?configInstance
 * @author youngphy.yang
 */
public class JsonParser {
    private static String TIMESTAMP = "timestamp";
    private static String REMOVED = "remove";

    private EnvironmentService envService;
    private ConfigService configService;

    /**
     * ??config?
     * @param dbContent ?DB?
     * @return
     * @throws Exception
     */
    public Map<String, Boolean> getDBAlias(String dbContent) throws Exception {
        Map<String, Boolean> dbAliases = null;
        JSONObject jsonObj = new JSONObject(dbContent);
        String[] names = JSONObject.getNames(jsonObj);
        dbAliases = new HashMap<String, Boolean>();
        a: for (int i = 0; i < names.length; i++) {
            String dsName = names[i];
            if (TIMESTAMP.equals(dsName)) {
                continue;
            } else {
                JSONObject envDSContent = jsonObj.getJSONObject(dsName);
                dsName = "data-source." + dsName;
                String[] envs = JSONObject.getNames(envDSContent);
                for (int j = 0; j < envs.length; j++) {
                    if (REMOVED.equals(envs[j])) {
                        dbAliases.put(dsName, true);
                        continue a;
                    }
                }
                dbAliases.put(dsName, false);
            }
        }
        return dbAliases;
    }

    /**
     * ??configInstances?
     * @param dbContent ?DB?
     * @return
     * @throws Exception
     */
    public Map<ConfigInstance, Boolean> getConfigInstances(String dbContent) throws Exception {
        Map<ConfigInstance, Boolean> cis = new HashMap<ConfigInstance, Boolean>();
        JSONObject jsonObj = new JSONObject(dbContent);
        String[] names = JSONObject.getNames(jsonObj);
        List<String> dbAliases = new ArrayList<String>();
        for (int i = 0; i < names.length; i++) {
            if (!TIMESTAMP.equals(names[i])) {
                dbAliases.add(names[i]);
            }
        }
        for (int i = 0; i < dbAliases.size(); i++) {
            JSONObject envDSContent = jsonObj.getJSONObject(dbAliases.get(i));
            String[] envs = JSONObject.getNames(envDSContent);
            for (int j = 0; j < envs.length; j++) {
                if (REMOVED.equals(envs[j])) {
                    continue;
                }
                ConfigInstance ci = new ConfigInstance();
                Config config = getConfigService().findConfigByKey("data-source." + dbAliases.get(i));
                ci.setConfigId(config.getId());
                Environment env = getEnvService().findEnvByName(envs[j].toLowerCase());
                ci.setEnvId(env.getId());
                ci.setValue(envDSContent.getString(envs[j]));
                boolean isRemovedContains = false;
                isRemovedContains = envDSContent.getJSONObject(envs[j]).has(REMOVED);
                if (isRemovedContains) {
                    cis.put(ci, true);
                } else {
                    cis.put(ci, false);
                }
            }
        }
        return cis;
    }

    public String getLastFetchTime(String dsContent) throws Exception {
        JSONObject jsonObj = new JSONObject(dsContent);
        String lastFetchTime = jsonObj.getString(TIMESTAMP);
        return lastFetchTime;
    }

    public EnvironmentService getEnvService() {
        return envService;
    }

    public void setEnvService(EnvironmentService envService) {
        this.envService = envService;
    }

    public ConfigService getConfigService() {
        return configService;
    }

    public void setConfigService(ConfigService configService) {
        this.configService = configService;
    }

}