Examples with FieldPacket com.actiontech.dble.net.mysql.FieldPacket used on opensource projects

Example 26 with FieldPacket

use of com.actiontech.dble.net.mysql.FieldPacket in project dble by actiontech.

the class ShowHelp 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.getPacketId();
    for (String key : KEYS) {
        RowDataPacket row = getRow(key, HELPS.get(key), c.getCharset().getResults());
        row.setPacketId(++packetId);
        buffer = row.write(buffer, c, true);
    }
    // write last eof
    EOFPacket lastEof = new EOFPacket();
    lastEof.setPacketId(++packetId);
    buffer = lastEof.write(buffer, c, true);
    // post write
    c.write(buffer);
}

Example 27 with FieldPacket

use of com.actiontech.dble.net.mysql.FieldPacket in project dble by actiontech.

the class SelectMaxAllowedPacket 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.getPacketId();
    RowDataPacket row = new RowDataPacket(FIELD_COUNT);
    row.setPacketId(++packetId);
    row.add(LongUtil.toBytes(1048576));
    buffer = row.write(buffer, c, true);
    // write last eof
    EOFPacket lastEof = new EOFPacket();
    lastEof.setPacketId(++packetId);
    buffer = lastEof.write(buffer, c, true);
    // post write
    c.write(buffer);
}

Example 28 with FieldPacket

use of com.actiontech.dble.net.mysql.FieldPacket in project dble by actiontech.

the class SelectSessionTxReadOnly 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.getPacketId();
    RowDataPacket row = new RowDataPacket(FIELD_COUNT);
    row.setPacketId(++packetId);
    row.add(LongUtil.toBytes(0));
    buffer = row.write(buffer, c, true);
    // write last eof
    EOFPacket lastEof = new EOFPacket();
    lastEof.setPacketId(++packetId);
    buffer = lastEof.write(buffer, c, true);
    // post write
    c.write(buffer);
}

Example 29 with FieldPacket

use of com.actiontech.dble.net.mysql.FieldPacket in project dble by actiontech.

the class ShowBackendOld method execute.

public static void execute(ManagerConnection c) {
    ByteBuffer buffer = c.allocate();
    buffer = HEADER.write(buffer, c, true);
    for (FieldPacket field : FIELDS) {
        buffer = field.write(buffer, c, true);
    }
    buffer = EOF.write(buffer, c, true);
    byte packetId = EOF.getPacketId();
    for (BackendConnection bc : NIOProcessor.BACKENDS_OLD) {
        if (bc != null) {
            RowDataPacket row = getRow(bc, c.getCharset().getResults());
            row.setPacketId(++packetId);
            buffer = row.write(buffer, c, true);
        }
    }
    EOFPacket lastEof = new EOFPacket();
    lastEof.setPacketId(++packetId);
    buffer = lastEof.write(buffer, c, true);
    c.write(buffer);
}

Example 30 with FieldPacket

use of com.actiontech.dble.net.mysql.FieldPacket in project dble by actiontech.

the class ShowTableDataNode method execute.

public static void execute(ManagerConnection c, String tableInfo) {
    Matcher ma = PATTERN_FOR_TABLE_INFO.matcher(tableInfo);
    if (!ma.matches()) {
        c.writeErrMessage(ErrorCode.ER_UNKNOWN_ERROR, "The Correct Query Format Is:show @@datanodes where schema=? and table =?");
        return;
    }
    String schemaName = ma.group(2);
    String tableName = ma.group(4);
    if (DbleServer.getInstance().getSystemVariables().isLowerCaseTableNames()) {
        schemaName = schemaName.toLowerCase();
        tableName = tableName.toLowerCase();
    }
    SchemaConfig schemaConfig = DbleServer.getInstance().getConfig().getSchemas().get(schemaName);
    List<String> dataNodes;
    if (schemaConfig == null) {
        c.writeErrMessage(ErrorCode.ER_UNKNOWN_ERROR, "the schema [" + schemaName + "] does not exists");
        return;
    } else if (schemaConfig.isNoSharding()) {
        dataNodes = Collections.singletonList(schemaConfig.getDataNode());
    } else {
        TableConfig tableConfig = schemaConfig.getTables().get(tableName);
        if (tableConfig == null) {
            if (schemaConfig.getDataNode() == null) {
                c.writeErrMessage(ErrorCode.ER_UNKNOWN_ERROR, "the table [" + tableName + "] in schema [" + schemaName + "] does not exists");
                return;
            } else {
                dataNodes = Collections.singletonList(schemaConfig.getDataNode());
            }
        } else {
            dataNodes = tableConfig.getDataNodes();
        }
    }
    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.getPacketId();
    for (RowDataPacket row : getRows(dataNodes, c.getCharset().getResults())) {
        row.setPacketId(++packetId);
        buffer = row.write(buffer, c, true);
    }
    // write last eof
    EOFPacket lastEof = new EOFPacket();
    lastEof.setPacketId(++packetId);
    buffer = lastEof.write(buffer, c, true);
    // post write
    c.write(buffer);
}