Examples with RowDataPacket com.alibaba.cobar.net.mysql.RowDataPacket used on opensource projects

Example 26 with RowDataPacket

use of com.alibaba.cobar.net.mysql.RowDataPacket in project cobar by alibaba.

the class SelectVersionComment method response.

public static void response(ServerConnection c) {
    ByteBuffer buffer = c.allocate();
    // write header
    buffer = header.write(buffer, c);
    // write fields
    for (FieldPacket field : fields) {
        buffer = field.write(buffer, c);
    }
    // write eof
    buffer = eof.write(buffer, c);
    // write rows
    byte packetId = eof.packetId;
    RowDataPacket row = new RowDataPacket(FIELD_COUNT);
    row.add(VERSION_COMMENT);
    row.packetId = ++packetId;
    buffer = row.write(buffer, c);
    // write last eof
    EOFPacket lastEof = new EOFPacket();
    lastEof.packetId = ++packetId;
    buffer = lastEof.write(buffer, c);
    // post write
    c.write(buffer);
}

Example 27 with RowDataPacket

use of com.alibaba.cobar.net.mysql.RowDataPacket in project cobar by alibaba.

the class ShowCobarCluster method getRows.

private static List<RowDataPacket> getRows(ServerConnection c) {
    List<RowDataPacket> rows = new LinkedList<RowDataPacket>();
    CobarConfig config = CobarServer.getInstance().getConfig();
    CobarCluster cluster = config.getCluster();
    Map<String, SchemaConfig> schemas = config.getSchemas();
    SchemaConfig schema = (c.getSchema() == null) ? null : schemas.get(c.getSchema());
    // 如果没有指定schema或者schema为null，则使用全部集群。
    if (schema == null) {
        Map<String, CobarNode> nodes = cluster.getNodes();
        for (CobarNode n : nodes.values()) {
            if (n != null && n.isOnline()) {
                rows.add(getRow(n, c.getCharset()));
            }
        }
    } else {
        String group = (schema.getGroup() == null) ? "default" : schema.getGroup();
        List<String> nodeList = cluster.getGroups().get(group);
        if (nodeList != null && nodeList.size() > 0) {
            Map<String, CobarNode> nodes = cluster.getNodes();
            for (String id : nodeList) {
                CobarNode n = nodes.get(id);
                if (n != null && n.isOnline()) {
                    rows.add(getRow(n, c.getCharset()));
                }
            }
        }
        // 如果schema对应的group或者默认group都没有有效的节点，则使用全部集群。
        if (rows.size() == 0) {
            Map<String, CobarNode> nodes = cluster.getNodes();
            for (CobarNode n : nodes.values()) {
                if (n != null && n.isOnline()) {
                    rows.add(getRow(n, c.getCharset()));
                }
            }
        }
    }
    if (rows.size() == 0) {
        alarm.error(Alarms.CLUSTER_EMPTY + c.toString());
    }
    return rows;
}

Example 28 with RowDataPacket

use of com.alibaba.cobar.net.mysql.RowDataPacket in project cobar by alibaba.

the class ExplainHandler method handle.

public static void handle(String stmt, ServerConnection c, int offset) {
    stmt = stmt.substring(offset);
    RouteResultset rrs = getRouteResultset(c, stmt);
    if (rrs == null)
        return;
    ByteBuffer buffer = c.allocate();
    // write header
    ResultSetHeaderPacket header = PacketUtil.getHeader(FIELD_COUNT);
    byte packetId = header.packetId;
    buffer = header.write(buffer, c);
    // write fields
    for (FieldPacket field : fields) {
        field.packetId = ++packetId;
        buffer = field.write(buffer, c);
    }
    // write eof
    EOFPacket eof = new EOFPacket();
    eof.packetId = ++packetId;
    buffer = eof.write(buffer, c);
    // write rows
    RouteResultsetNode[] rrsn = (rrs != null) ? rrs.getNodes() : EMPTY_ARRAY;
    for (RouteResultsetNode node : rrsn) {
        RowDataPacket row = getRow(node, c.getCharset());
        row.packetId = ++packetId;
        buffer = row.write(buffer, c);
    }
    // write last eof
    EOFPacket lastEof = new EOFPacket();
    lastEof.packetId = ++packetId;
    buffer = lastEof.write(buffer, c);
    // post write
    c.write(buffer);
}

Example 29 with RowDataPacket

use of com.alibaba.cobar.net.mysql.RowDataPacket in project cobar by alibaba.

the class ExplainHandler method getRow.

private static RowDataPacket getRow(RouteResultsetNode node, String charset) {
    RowDataPacket row = new RowDataPacket(FIELD_COUNT);
    row.add(StringUtil.encode(node.getName(), charset));
    row.add(StringUtil.encode(node.getStatement(), charset));
    return row;
}

Example 30 with RowDataPacket

use of com.alibaba.cobar.net.mysql.RowDataPacket in project cobar by alibaba.

the class ShowThreadPool method execute.

public static void execute(ManagerConnection c) {
    ByteBuffer buffer = c.allocate();
    // write header
    buffer = header.write(buffer, c);
    // write fields
    for (FieldPacket field : fields) {
        buffer = field.write(buffer, c);
    }
    // write eof
    buffer = eof.write(buffer, c);
    // write rows
    byte packetId = eof.packetId;
    List<NameableExecutor> executors = getExecutors();
    for (NameableExecutor exec : executors) {
        if (exec != null) {
            RowDataPacket row = getRow(exec, c.getCharset());
            row.packetId = ++packetId;
            buffer = row.write(buffer, c);
        }
    }
    // write last eof
    EOFPacket lastEof = new EOFPacket();
    lastEof.packetId = ++packetId;
    buffer = lastEof.write(buffer, c);
    // write buffer
    c.write(buffer);
}