Examples with SystemVariables com.actiontech.dble.server.variables.SystemVariables used on opensource projects

Example 1 with SystemVariables

use of com.actiontech.dble.server.variables.SystemVariables in project dble by actiontech.

the class ReloadConfig method reloadAll.

public static void reloadAll(final int loadAllMode) throws Exception {
    /*
         *  1 load new conf
         *  1.1 ConfigInitializer init adn check itself
         *  1.2 DataNode/DataHost test connection
         */
    ConfigInitializer loader;
    try {
        loader = new ConfigInitializer(true, DbleServer.getInstance().getSystemVariables().isLowerCaseTableNames());
    } catch (Exception e) {
        throw new Exception(e);
    }
    Map<String, UserConfig> newUsers = loader.getUsers();
    Map<String, SchemaConfig> newSchemas = loader.getSchemas();
    Map<String, PhysicalDBNode> newDataNodes = loader.getDataNodes();
    Map<String, PhysicalDBPool> newDataHosts = loader.getDataHosts();
    Map<ERTable, Set<ERTable>> newErRelations = loader.getErRelations();
    FirewallConfig newFirewall = loader.getFirewall();
    SystemVariables newSystemVariables = DbleServer.getInstance().getSystemVariables();
    if (!loader.isDataHostWithoutWH()) {
        VarsExtractorHandler handler = new VarsExtractorHandler(newDataNodes);
        newSystemVariables = handler.execute();
        ConfigInitializer confInit = new ConfigInitializer(newSystemVariables.isLowerCaseTableNames());
        newUsers = confInit.getUsers();
        newSchemas = confInit.getSchemas();
        newDataNodes = confInit.getDataNodes();
        newErRelations = confInit.getErRelations();
        newFirewall = confInit.getFirewall();
        newDataHosts = confInit.getDataHosts();
    }
    if ((loadAllMode & ManagerParseConfig.OPTT_MODE) != 0) {
        try {
            loader.testConnection(false);
        } catch (Exception e) {
            throw new Exception(e);
        }
    }
    /*
         *  2 transform
         *  2.1 old dataSource continue to work
         *  2.2 init the new dataSource
         *  2.3 transform
         *  2.4 put the old connection into a queue
         */
    ServerConfig config = DbleServer.getInstance().getConfig();
    /* 2.1 do nothing */
    boolean isReloadStatusOK = true;
    /* 2.2 init the new dataSource */
    for (PhysicalDBPool dbPool : newDataHosts.values()) {
        String hostName = dbPool.getHostName();
        // set schemas
        ArrayList<String> dnSchemas = new ArrayList<>(30);
        for (PhysicalDBNode dn : newDataNodes.values()) {
            if (dn.getDbPool().getHostName().equals(hostName)) {
                dnSchemas.add(dn.getDatabase());
            }
        }
        dbPool.setSchemas(dnSchemas.toArray(new String[dnSchemas.size()]));
        // get data host
        String dnIndex = DnPropertyUtil.loadDnIndexProps().getProperty(dbPool.getHostName(), "0");
        if (!"0".equals(dnIndex)) {
            LOGGER.info("init data host: " + dbPool.getHostName() + " to use datasource index:" + dnIndex);
        }
        dbPool.init(Integer.parseInt(dnIndex));
        if (!dbPool.isInitSuccess()) {
            isReloadStatusOK = false;
            break;
        }
    }
    if (isReloadStatusOK) {
        /* 2.3 apply new conf */
        config.reload(newUsers, newSchemas, newDataNodes, newDataHosts, newErRelations, newFirewall, newSystemVariables, loader.isDataHostWithoutWH(), true);
        recycleOldBackendConnections(config, ((loadAllMode & ManagerParseConfig.OPTF_MODE) != 0));
        AlarmAppender.refreshConfig();
    } else {
        // INIT FAILED
        LOGGER.info("reload failed, clear previously created data sources ");
        for (PhysicalDBPool dbPool : newDataHosts.values()) {
            dbPool.clearDataSources("reload config");
            dbPool.stopHeartbeat();
        }
        throw new Exception("Init DbPool failed");
    }
}