Examples with FieldPacket io.mycat.net.mysql.FieldPacket used on opensource projects

Example 6 with FieldPacket

use of io.mycat.net.mysql.FieldPacket in project Mycat-Server by MyCATApache.

the class ShowDatasourceSynDetail method response.

public static void response(ManagerConnection c, String stmt) {
    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;
    String name = ManagerParseShow.getWhereParameter(stmt);
    for (RowDataPacket row : getRows(name, 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);
    // post write
    c.write(buffer);
}

Example 7 with FieldPacket

use of io.mycat.net.mysql.FieldPacket in project Mycat-Server by MyCATApache.

the class ShowDirectMemory method showDirectMemoryTotal.

public static void showDirectMemoryTotal(ManagerConnection c) {
    ByteBuffer buffer = c.allocate();
    // write header
    buffer = totalHeader.write(buffer, c, true);
    // write fields
    for (FieldPacket field : totalFields) {
        buffer = field.write(buffer, c, true);
    }
    // write eof
    buffer = totalEof.write(buffer, c, true);
    // write rows
    byte packetId = totalEof.packetId;
    int useOffHeapForMerge = MycatServer.getInstance().getConfig().getSystem().getUseOffHeapForMerge();
    ConcurrentHashMap<Long, Long> networkbufferpool = MycatServer.getInstance().getBufferPool().getNetDirectMemoryUsage();
    RowDataPacket row = new RowDataPacket(TOTAL_FIELD_COUNT);
    long usedforMerge = 0;
    long usedforNetworkd = 0;
    try {
        /**
             * 通过-XX:MaxDirectMemorySize=2048m设置的值
             */
        row.add(JavaUtils.bytesToString2(Platform.getMaxDirectMemory()).getBytes(c.getCharset()));
        if (useOffHeapForMerge == 1) {
            /**
                 * 结果集合并时，总共消耗的DirectMemory内存
                 */
            ConcurrentHashMap<Long, Long> concurrentHashMap = MycatServer.getInstance().getMyCatMemory().getResultMergeMemoryManager().getDirectMemorUsage();
            for (Map.Entry<Long, Long> entry : concurrentHashMap.entrySet()) {
                usedforMerge += entry.getValue();
            }
        }
        /**
             * 网络packet处理，在buffer pool 已经使用DirectMemory内存
             */
        for (Map.Entry<Long, Long> entry : networkbufferpool.entrySet()) {
            usedforNetworkd += entry.getValue();
        }
        row.add(JavaUtils.bytesToString2(usedforMerge + usedforNetworkd).getBytes(c.getCharset()));
        long totalAvailable = 0;
        if (useOffHeapForMerge == 1) {
            /**
                 * 设置使用off-heap内存处理结果集时，防止客户把MaxDirectMemorySize设置到物理内存的极限。
                 * Mycat能使用的DirectMemory是MaxDirectMemorySize*DIRECT_SAFETY_FRACTION大小，
                 * DIRECT_SAFETY_FRACTION为安全系数，为OS，Heap预留空间，避免因大结果集造成系统物理内存被耗尽！
                 */
            totalAvailable = (long) (Platform.getMaxDirectMemory() * MyCatMemory.DIRECT_SAFETY_FRACTION);
        } else {
            totalAvailable = Platform.getMaxDirectMemory();
        }
        row.add(JavaUtils.bytesToString2(totalAvailable - usedforMerge - usedforNetworkd).getBytes(c.getCharset()));
        if (useOffHeapForMerge == 1) {
            /**
                 * 输出安全系统DIRECT_SAFETY_FRACTION
                 */
            row.add(("" + MyCatMemory.DIRECT_SAFETY_FRACTION).getBytes(c.getCharset()));
        } else {
            row.add(("1.0").getBytes(c.getCharset()));
        }
        long resevedForOs = 0;
        if (useOffHeapForMerge == 1) {
            /**
                 * 预留OS系统部分内存！！！
                 */
            resevedForOs = (long) ((1 - MyCatMemory.DIRECT_SAFETY_FRACTION) * (Platform.getMaxDirectMemory() - 2 * MycatServer.getInstance().getTotalNetWorkBufferSize()));
        }
        row.add(resevedForOs > 0 ? JavaUtils.bytesToString2(resevedForOs).getBytes(c.getCharset()) : "0".getBytes(c.getCharset()));
        row.packetId = ++packetId;
        buffer = row.write(buffer, c, true);
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }
    // write last eof
    EOFPacket lastEof = new EOFPacket();
    lastEof.packetId = ++packetId;
    buffer = lastEof.write(buffer, c, true);
    // write buffer
    c.write(buffer);
}

Example 8 with FieldPacket

use of io.mycat.net.mysql.FieldPacket in project Mycat-Server by MyCATApache.

the class ShowHeartbeatDetail method response.

public static void response(ManagerConnection c, String stmt) {
    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;
    Pair<String, String> pair = ManagerParseHeartbeat.getPair(stmt);
    String name = pair.getValue();
    for (RowDataPacket row : getRows(name, 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);
    // post write
    c.write(buffer);
}

Example 9 with FieldPacket

use of io.mycat.net.mysql.FieldPacket in project Mycat-Server by MyCATApache.

the class ShowSession 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;
    for (NIOProcessor process : MycatServer.getInstance().getProcessors()) {
        for (FrontendConnection front : process.getFrontends().values()) {
            if (!(front instanceof ServerConnection)) {
                continue;
            }
            ServerConnection sc = (ServerConnection) front;
            RowDataPacket row = getRow(sc, c.getCharset());
            if (row != null) {
                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 10 with FieldPacket

use of io.mycat.net.mysql.FieldPacket in project Mycat-Server by MyCATApache.

the class ShowSqlResultSet 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;
    int i = 0;
    Map<String, UserStat> statMap = UserStatAnalyzer.getInstance().getUserStatMap();
    for (UserStat userStat : statMap.values()) {
        String user = userStat.getUser();
        ConcurrentHashMap<String, SqlResultSet> map = userStat.getSqlResultSizeRecorder().getSqlResultSet();
        if (map != null) {
            for (SqlResultSet sqlResultSet : map.values()) {
                RowDataPacket row = getRow(++i, user, sqlResultSet.getSql(), sqlResultSet.getCount(), sqlResultSet.getResultSetSize(), 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);
}