Java ConfigDataHandler类代码示例

import com.taobao.tddl.config.ConfigDataHandler; //导入依赖的package包/类
@Override
protected void doDestroy() throws TddlException {
    Map<String, IRepository> repos = repositoryHolder.getRepository();
    for (IRepository repo : repos.values()) {
        repo.destroy();
    }

    if (topologyFileHandler != null) {
        topologyFileHandler.destroy();
    }

    for (ConfigDataHandler cdh : cdhs.asMap().values()) {
        cdh.destroy();
    }

    cdhs.cleanUp();
}
 

import com.taobao.tddl.config.ConfigDataHandler; //导入依赖的package包/类
private synchronized void loadUser(final String app) throws ExecutionException, TddlException {
    String dataId = DATAID_PREFIX + this.cluster + "." + app + DATAID_SUFFIX;
    ConfigDataHandler cdh = getConfigDataHandler(app, dataId);
    String config = cdh.getData();
    if (StringUtil.isEmpty(config)) {
        cdhs.invalidate(dataId);
        cdh.destroy();

        // 重新拿一下新的dataId
        String newDataId = DATAID_PREFIX + app + DATAID_SUFFIX;
        cdh = getConfigDataHandler(app, newDataId);
        config = cdh.getData();
    }

    this.parseConfig(dataId, app, config);
}
 

import com.taobao.tddl.config.ConfigDataHandler; //导入依赖的package包/类
private synchronized void unLoadUser(final String app) throws TddlException {
    String dataId = DATAID_PREFIX + this.cluster + "." + app + DATAID_SUFFIX;
    ConfigDataHandler cdh = cdhs.getIfPresent(dataId);
    if (cdh != null) {
        cdh.destroy();
        cdhs.invalidate(dataId);
    }

    String newDataId = DATAID_PREFIX + app + DATAID_SUFFIX;
    cdh = cdhs.getIfPresent(newDataId);
    if (cdh != null) {
        cdh.destroy();
        cdhs.invalidate(dataId);
    }

    users.remove(app);
}
 

import com.taobao.tddl.config.ConfigDataHandler; //导入依赖的package包/类
@Override
public ConfigDataHandler getConfigDataHandler(String dataId, List<ConfigDataListener> configDataListenerList,
                                              Executor executor, Map<String, Object> config) {
    // 获取config data handler的扩展实现
    PreheatDataHandler instance = new PreheatDataHandler();
    instance.setUnitName(unitName);
    instance.setAppName(appName);
    instance.setDataId(dataId);
    instance.setListeners(clearNullListener(configDataListenerList));
    instance.setConfig(config);
    try {
        instance.init();// 启动
    } catch (TddlException e) {
        throw new TddlNestableRuntimeException(e);
    }
    return instance;
}
 

import com.taobao.tddl.config.ConfigDataHandler; //导入依赖的package包/类
@Override
public ConfigDataHandler getConfigDataHandler(String dataId, ConfigDataListener configDataListener) {
    String key = combineDataKey(appName, dataId);
    ConfigDataHandler configDataHandler = filePath.get(key);
    if (configDataHandler == null) {
        synchronized (this) {
            configDataHandler = filePath.get(key);
            // dcl
            if (configDataHandler == null) {
                configDataHandler = new FileConfigDataHandler(appName,
                    executor,
                    configure_prefix,
                    directory,
                    dataId,
                    configDataListener);
                ConfigDataHandler tempCdh = filePath.putIfAbsent(key, configDataHandler);
                if (tempCdh != null) {
                    configDataHandler = tempCdh;
                }
            }

        }
    }
    configDataHandler.addListener(configDataListener, null);
    return configDataHandler;
}
 

import com.taobao.tddl.config.ConfigDataHandler; //导入依赖的package包/类
@Override
public ConfigDataHandler getConfigDataHandler(String dataId, List<ConfigDataListener> configDataListenerList,
                                              Executor executor, Map<String, Object> config) {
    // 获取config data handler的扩展实现
    PreheatDataHandler instance = new PreheatDataHandler();
    instance.setUnitName(unitName);
    instance.setAppName(appName);
    instance.setDataId(dataId);
    instance.setListeners(clearNullListener(configDataListenerList));
    instance.setConfig(config);
    try {
        instance.init();// 启动
    } catch (TddlException e) {
        throw new TddlRuntimeException(e);
    }
    return instance;
}
 

import com.taobao.tddl.config.ConfigDataHandler; //导入依赖的package包/类
/**
 * 尝试订阅一下
 * 
 * @throws TddlException
 */
private boolean dataSub(String dataId, String version, ConfigDataListener listener) {
    ConfigDataHandler ruleHandler = cdhf.getConfigDataHandler(dataId, listener);
    try {
        String data = ruleHandler.getData(TIMEOUT, ConfigDataHandler.FIRST_CACHE_THEN_SERVER_STRATEGY);
        if (data == null) {
            logger.error("use diamond rule config,but recieve no config at all!");
            return false;
        }

        if (initVersionRule(data, version)) {
            this.ruleHandlers.put(version, ruleHandler);
            return true;
        }
    } catch (Exception e) {
        try {
            ruleHandler.destory();
        } catch (TddlException e1) {
            logger.error("destory failed!", e);
        }

        logger.error("get diamond data error!", e);
    }

    return false;
}
 

import com.taobao.tddl.config.ConfigDataHandler; //导入依赖的package包/类
void loadDualTable() throws TddlException {
    ConfigDataHandler cdh = ConfigDataHandlerCity.getFileFactory(appName).getConfigDataHandler("DUAL_TABLE.xml",
        null);
    String data = cdh.getData();

    cdh.destroy();
    TableMetaParser parser = new TableMetaParser();

    TableMeta dualTable = parser.parse(data).get(0);

    this.putTable(dualTable.getTableName(), dualTable);
}
 

import com.taobao.tddl.config.ConfigDataHandler; //导入依赖的package包/类
@Override
protected void doDestroy() throws TddlException {
    for (ConfigDataHandler cdh : cdhs.asMap().values()) {
        try {
            cdh.destroy();
        } catch (Exception e) {
            // ignore
        }
    }

    for (String app : loadedApps) {
        appLoader.unLoadApp(app); // 卸载所有的app
    }
}
 

import com.taobao.tddl.config.ConfigDataHandler; //导入依赖的package包/类
@Override
public ConfigDataHandler getConfigDataHandler(String dataId) {
    if (localValues != null && localValues.containsKey(dataId)) {
        return new StaticConfigDataHandler(localValues.get(dataId));
    }

    return delegateFactory.getConfigDataHandler(dataId);
}
 

import com.taobao.tddl.config.ConfigDataHandler; //导入依赖的package包/类
/**
 * remove listeners
 * 
 * @throws TddlException
 */
@Override
public void doDestroy() throws TddlException {
    if (versionHandler != null) {
        versionHandler.destroy();
    }

    for (ConfigDataHandler ruleListener : this.ruleHandlers.values()) {
        ruleListener.destroy();
    }
}
 

import com.taobao.tddl.config.ConfigDataHandler; //导入依赖的package包/类
/**
 * 从Diamond配置中心提取信息，构造TAtomDataSource、构造有优先级信息的读写DBSelector ---add by
 * mazhidan.pt
 */
public void doInit() throws TddlException {
    // 警告: 不要在构造DefaultDiamondManager时就注册ManagerListener(比如:configReceiver)
    // 也就是说，不要这样用: new DefaultDiamondManager(dbGroupKey, configReceiver)，
    // 而是要设成null，等第一次取得信息并解析完成后再注册，这样可以不用同步，避免任何与并发相关的问题，
    // 因为有可能在第一次刚取回信息后，Diamond配置中心那边马上修改了记录，导致ManagerListener这个线程立刻收到信息，
    // 造成初始化线程和ManagerListener线程同时解析信息。

    // 目前针对parse方法会做同步处理，避免并发操作. 同时针对diamond相同配置的进行cache，避免重复相同内容的通知

    configFactory = ConfigDataHandlerCity.getFactory(tGroupDataSource.getAppName(), tGroupDataSource.getUnitName());
    globalHandler = configFactory.getConfigDataHandler(tGroupDataSource.getFullDbGroupKey(), configReceiver);

    String dsWeightCommaStr = globalHandler.getData();

    // extra config
    extraFactory = ConfigDataHandlerCity.getFactory(tGroupDataSource.getAppName(), tGroupDataSource.getUnitName());

    extraHandler = extraFactory.getConfigDataHandler(tGroupDataSource.getDbGroupExtraConfigKey(),
        extraGroupConfigReceiver);
    String extraConfig = extraHandler.getNullableData(tGroupDataSource.getConfigReceiveTimeout(),
        ConfigDataHandler.FIRST_CACHE_THEN_SERVER_STRATEGY);

    if (extraConfig != null) {
        parseExtraConfig(extraConfig);
    }

    parse(dsWeightCommaStr);
    // 已经使用过的配置移除
    // destoryConfigHoderFactory();
}
 

import com.taobao.tddl.config.ConfigDataHandler; //导入依赖的package包/类
@Override
public IRepository buildRepository(Group group, Map repoProperties, Map connectionProperties) {
    // 依赖一个mapping文件
    String mappingFile = GeneralUtil.getExtraCmdString(connectionProperties,
        ConnectionProperties.HBASE_MAPPING_FILE);

    String mappingData = null;
    ConfigDataHandler cdh = null;

    if (mappingFile != null) {
        cdh = ConfigDataHandlerCity.getFileFactory(group.getAppName()).getConfigDataHandler(mappingFile, null);
    } else {
        cdh = ConfigDataHandlerCity.getFactory(group.getAppName(), group.getUnitName())
            .getConfigDataHandler(HBASE_MAPPING_FILE.format(new Object[] { group.getAppName() }), null);
    }

    mappingData = cdh.getData();
    if (mappingData == null) {
        logger.error("init hbase mapping file failed! content is null");
        return null;
    }

    HbRepository hbRepo = new HbRepository(mappingData);
    try {
        hbRepo.init();
    } catch (TddlException e) {
        throw new TddlNestableRuntimeException(e);
    }
    return hbRepo;
}
 

import com.taobao.tddl.config.ConfigDataHandler; //导入依赖的package包/类
@Override
protected void doInit() {
    if (topologyFilePath != null) {
        cdh = ConfigDataHandlerCity.getFileFactory(appName).getConfigDataHandler(topologyFilePath,
            new TopologyListener(this));
    } else {
        cdh = ConfigDataHandlerCity.getFactory(appName, unitName)
            .getConfigDataHandler(TOPOLOGY.format(new Object[] { appName }), new TopologyListener(this));
    }

    String data = cdh.getData(ConfigDataHandler.GET_DATA_TIMEOUT, ConfigDataHandler.FIRST_SERVER_STRATEGY);
    if (data == null) {
        // 尝试读一次tddl的appName规则
        data = generateTopologyXML(appName, unitName);
    }

    if (data == null) {
        String dataId = TOPOLOGY.format(new Object[] { appName });
        throw new TddlRuntimeException(topologyNullError.format(new String[] { appName, unitName, topologyFilePath,
                dataId }));
    }

    try {
        Matrix matrix = MatrixParser.parse(data);
        this.matrix = matrix;
    } catch (Exception ex) {
        logger.error("matrix topology init error,file is: " + this.getTopologyFilePath() + ", appname is: "
                     + this.getAppName(),
            ex);
        throw new TddlRuntimeException(ex);
    }

}
 

import com.taobao.tddl.config.ConfigDataHandler; //导入依赖的package包/类
public String getAppDbDbConf() {
    if (null != appDBHandler) {
        return appDBHandler.getData(ConfigDataHandler.GET_DATA_TIMEOUT,
            ConfigDataHandler.FIRST_CACHE_THEN_SERVER_STRATEGY);
    }
    logger.error("[getDataError] appDBConfig not init !");
    return null;
}