Examples with CachePool io.mycat.cache.CachePool used on opensource projects

Example 1 with CachePool

use of io.mycat.cache.CachePool in project Mycat_plus by coderczp.

the class FetchStoreNodeOfChildTableHandler method execute.

public String execute(String schema, String sql, ArrayList<String> dataNodes) {
    String key = schema + ":" + sql;
    CachePool cache = MycatServer.getInstance().getCacheService().getCachePool("ER_SQL2PARENTID");
    String result = (String) cache.get(key);
    if (result != null) {
        return result;
    }
    this.sql = sql;
    int totalCount = dataNodes.size();
    long startTime = System.currentTimeMillis();
    long endTime = startTime + 5 * 60 * 1000L;
    MycatConfig conf = MycatServer.getInstance().getConfig();
    LOGGER.debug("find child node with sql:" + sql);
    for (String dn : dataNodes) {
        if (dataNode != null) {
            return dataNode;
        }
        PhysicalDBNode mysqlDN = conf.getDataNodes().get(dn);
        try {
            if (LOGGER.isDebugEnabled()) {
                LOGGER.debug("execute in datanode " + dn);
            }
            RouteResultsetNode node = new RouteResultsetNode(dn, ServerParse.SELECT, sql);
            // 获取 子表节点，最好走master为好
            node.setRunOnSlave(false);
            mysqlDN.getConnection(mysqlDN.getDatabase(), true, node, this, node);
        // mysqlDN.getConnection(mysqlDN.getDatabase(), true,
        // new RouteResultsetNode(dn, ServerParse.SELECT, sql),
        // this, dn);
        } catch (Exception e) {
            LOGGER.warn("get connection err " + e);
        }
        try {
            Thread.sleep(200);
        } catch (InterruptedException e) {
        }
    }
    while (dataNode == null && System.currentTimeMillis() < endTime) {
        try {
            Thread.sleep(50);
        } catch (InterruptedException e) {
            break;
        }
        if (dataNode != null || finished.get() >= totalCount) {
            break;
        }
    }
    if (dataNode != null) {
        cache.putIfAbsent(key, dataNode);
    }
    return dataNode;
}

Example 2 with CachePool

use of io.mycat.cache.CachePool in project Mycat_plus by coderczp.

the class ShowCache method execute.

public static void execute(ManagerConnection c) {
    ByteBuffer buffer = c.allocate();
    // write header
    buffer = header.write(buffer, c, true);
    // write fields
    for (FieldPacket field : fields) {
        buffer = field.write(buffer, c, true);
    }
    // write eof
    buffer = eof.write(buffer, c, true);
    // write rows
    byte packetId = eof.packetId;
    CacheService cacheService = MycatServer.getInstance().getCacheService();
    for (Map.Entry<String, CachePool> entry : cacheService.getAllCachePools().entrySet()) {
        String cacheName = entry.getKey();
        CachePool cachePool = entry.getValue();
        if (cachePool instanceof LayerCachePool) {
            for (Map.Entry<String, CacheStatic> staticsEntry : ((LayerCachePool) cachePool).getAllCacheStatic().entrySet()) {
                RowDataPacket row = getRow(cacheName + '.' + staticsEntry.getKey(), staticsEntry.getValue(), c.getCharset());
                row.packetId = ++packetId;
                buffer = row.write(buffer, c, true);
            }
        } else {
            RowDataPacket row = getRow(cacheName, cachePool.getCacheStatic(), c.getCharset());
            row.packetId = ++packetId;
            buffer = row.write(buffer, c, true);
        }
    }
    // write last eof
    EOFPacket lastEof = new EOFPacket();
    lastEof.packetId = ++packetId;
    buffer = lastEof.write(buffer, c, true);
    // write buffer
    c.write(buffer);
}

Example 3 with CachePool

use of io.mycat.cache.CachePool in project Mycat-Server by MyCATApache.

the class FetchStoreNodeOfChildTableHandler method execute.

public String execute(String schema, String sql, List<String> dataNodes, ServerConnection sc) {
    String key = schema + ":" + sql;
    CachePool cache = MycatServer.getInstance().getCacheService().getCachePool("ER_SQL2PARENTID");
    String result = (String) cache.get(key);
    if (result != null) {
        return result;
    }
    this.sql = sql;
    int totalCount = dataNodes.size();
    long startTime = System.currentTimeMillis();
    long endTime = startTime + 5 * 60 * 1000L;
    MycatConfig conf = MycatServer.getInstance().getConfig();
    LOGGER.debug("find child node with sql:" + sql);
    for (String dn : dataNodes) {
        if (dataNode != null) {
            return dataNode;
        }
        PhysicalDBNode mysqlDN = conf.getDataNodes().get(dn);
        try {
            if (LOGGER.isDebugEnabled()) {
                LOGGER.debug("execute in datanode " + dn);
            }
            RouteResultsetNode node = new RouteResultsetNode(dn, ServerParse.SELECT, sql);
            // 获取 子表节点，最好走master为好
            node.setRunOnSlave(false);
            /*
				 * fix #1370 默认应该先从已经持有的连接中取连接, 否则可能因为事务隔离性看不到当前事务内更新的数据
				 * Tips: 通过mysqlDN.getConnection获取到的连接不是当前连接
				 *
				 */
            BackendConnection conn = sc.getSession2().getTarget(node);
            if (sc.getSession2().tryExistsCon(conn, node)) {
                _execute(conn, node, sc);
            } else {
                mysqlDN.getConnection(mysqlDN.getDatabase(), sc.isAutocommit(), node, this, node);
            }
        } catch (Exception e) {
            LOGGER.warn("get connection err " + e);
        }
    }
    while (dataNode == null && System.currentTimeMillis() < endTime) {
        try {
            Thread.sleep(50);
        } catch (InterruptedException e) {
            break;
        }
        if (dataNode != null || finished.get() >= totalCount) {
            break;
        }
    }
    if (dataNode != null) {
        cache.putIfAbsent(key, dataNode);
    }
    return dataNode;
}

Example 4 with CachePool

use of io.mycat.cache.CachePool in project Mycat-Server by MyCATApache.

the class ShowCache method execute.

public static void execute(ManagerConnection c) {
    ByteBuffer buffer = c.allocate();
    // write header
    buffer = header.write(buffer, c, true);
    // write fields
    for (FieldPacket field : fields) {
        buffer = field.write(buffer, c, true);
    }
    // write eof
    buffer = eof.write(buffer, c, true);
    // write rows
    byte packetId = eof.packetId;
    CacheService cacheService = MycatServer.getInstance().getCacheService();
    for (Map.Entry<String, CachePool> entry : cacheService.getAllCachePools().entrySet()) {
        String cacheName = entry.getKey();
        CachePool cachePool = entry.getValue();
        if (cachePool instanceof LayerCachePool) {
            for (Map.Entry<String, CacheStatic> staticsEntry : ((LayerCachePool) cachePool).getAllCacheStatic().entrySet()) {
                RowDataPacket row = getRow(cacheName + '.' + staticsEntry.getKey(), staticsEntry.getValue(), c.getCharset());
                row.packetId = ++packetId;
                buffer = row.write(buffer, c, true);
            }
        } else {
            RowDataPacket row = getRow(cacheName, cachePool.getCacheStatic(), c.getCharset());
            row.packetId = ++packetId;
            buffer = row.write(buffer, c, true);
        }
    }
    // write last eof
    EOFPacket lastEof = new EOFPacket();
    lastEof.packetId = ++packetId;
    buffer = lastEof.write(buffer, c, true);
    // write buffer
    c.write(buffer);
}

Example 5 with CachePool

use of io.mycat.cache.CachePool in project Mycat_plus by coderczp.

the class FetchStoreNodeOfChildTableHandler method execute.

public String execute(String schema, String sql, List<String> dataNodes, ServerConnection sc) {
    String key = schema + ":" + sql;
    CachePool cache = MycatServer.getInstance().getCacheService().getCachePool("ER_SQL2PARENTID");
    String result = (String) cache.get(key);
    if (result != null) {
        return result;
    }
    this.sql = sql;
    int totalCount = dataNodes.size();
    long startTime = System.currentTimeMillis();
    long endTime = startTime + 5 * 60 * 1000L;
    MycatConfig conf = MycatServer.getInstance().getConfig();
    LOGGER.debug("find child node with sql:" + sql);
    for (String dn : dataNodes) {
        if (dataNode != null) {
            return dataNode;
        }
        PhysicalDBNode mysqlDN = conf.getDataNodes().get(dn);
        try {
            if (LOGGER.isDebugEnabled()) {
                LOGGER.debug("execute in datanode " + dn);
            }
            RouteResultsetNode node = new RouteResultsetNode(dn, ServerParse.SELECT, sql);
            // 获取 子表节点，最好走master为好
            node.setRunOnSlave(false);
            /*
				 * fix #1370 默认应该先从已经持有的连接中取连接, 否则可能因为事务隔离性看不到当前事务内更新的数据
				 * Tips: 通过mysqlDN.getConnection获取到的连接不是当前连接
				 *
				 */
            BackendConnection conn = sc.getSession2().getTarget(node);
            if (sc.getSession2().tryExistsCon(conn, node)) {
                _execute(conn, node, sc);
            } else {
                mysqlDN.getConnection(mysqlDN.getDatabase(), sc.isAutocommit(), node, this, node);
            }
        } catch (Exception e) {
            LOGGER.warn("get connection err " + e);
        }
    }
    while (dataNode == null && System.currentTimeMillis() < endTime) {
        try {
            Thread.sleep(50);
        } catch (InterruptedException e) {
            break;
        }
        if (dataNode != null || finished.get() >= totalCount) {
            break;
        }
    }
    if (dataNode != null) {
        cache.putIfAbsent(key, dataNode);
    }
    return dataNode;
}