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

Example 96 with FieldPacket

use of io.mycat.net.mysql.FieldPacket in project Mycat_plus by coderczp.

the class ShowCobarCluster method response.

public static void response(ServerConnection c) {
    ByteBuffer buffer = c.allocate();
    // write header
    buffer = header.write(buffer, c, true);
    // write field
    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 (RowDataPacket row : getRows(c)) {
        row.packetId = ++packetId;
        buffer = row.write(buffer, c, true);
    }
    // last eof
    EOFPacket lastEof = new EOFPacket();
    lastEof.packetId = ++packetId;
    buffer = lastEof.write(buffer, c, true);
    // post write
    c.write(buffer);
}

Example 97 with FieldPacket

use of io.mycat.net.mysql.FieldPacket in project Mycat_plus by coderczp.

the class ShowDatabases method response.

public static void response(ServerConnection 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;
    MycatConfig conf = MycatServer.getInstance().getConfig();
    Map<String, UserConfig> users = conf.getUsers();
    UserConfig user = users == null ? null : users.get(c.getUser());
    if (user != null) {
        TreeSet<String> schemaSet = new TreeSet<String>();
        Set<String> schemaList = user.getSchemas();
        if (schemaList == null || schemaList.size() == 0) {
            schemaSet.addAll(conf.getSchemas().keySet());
        } else {
            for (String schema : schemaList) {
                schemaSet.add(schema);
            }
        }
        for (String name : schemaSet) {
            RowDataPacket row = new RowDataPacket(FIELD_COUNT);
            row.add(StringUtil.encode(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 98 with FieldPacket

use of io.mycat.net.mysql.FieldPacket in project Mycat_plus by coderczp.

the class ShowFullTables method response.

/**
 * response method.
 * @param c
 */
public static void response(ServerConnection c, String stmt, int type) {
    String showSchemal = SchemaUtil.parseShowTableSchema(stmt);
    String cSchema = showSchemal == null ? c.getSchema() : showSchemal;
    SchemaConfig schema = MycatServer.getInstance().getConfig().getSchemas().get(cSchema);
    if (schema != null) {
        // 不分库的schema，show tables从后端 mysql中查
        String node = schema.getDataNode();
        if (!Strings.isNullOrEmpty(node)) {
            c.execute(stmt, ServerParse.SHOW);
            return;
        }
    } else {
        c.writeErrMessage(ErrorCode.ER_NO_DB_ERROR, "No database selected");
    }
    // 分库的schema，直接从SchemaConfig中获取所有表名
    Map<String, String> parm = buildFields(c, stmt);
    Set<String> tableSet = getTableSet(c, parm);
    int i = 0;
    byte packetId = 0;
    header.packetId = ++packetId;
    fields[i] = PacketUtil.getField("Tables in " + parm.get(SCHEMA_KEY), Fields.FIELD_TYPE_VAR_STRING);
    fields[i].packetId = ++packetId;
    fields[i + 1] = PacketUtil.getField("Table_type  ", Fields.FIELD_TYPE_VAR_STRING);
    fields[i + 1].packetId = ++packetId;
    eof.packetId = ++packetId;
    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
    packetId = eof.packetId;
    for (String name : tableSet) {
        RowDataPacket row = new RowDataPacket(FIELD_COUNT);
        row.add(StringUtil.encode(name.toLowerCase(), c.getCharset()));
        row.add(StringUtil.encode("BASE TABLE", 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 99 with FieldPacket

use of io.mycat.net.mysql.FieldPacket in project Mycat_plus by coderczp.

the class ShowMyCatStatus method response.

public static void response(ServerConnection c) {
    if (MycatServer.getInstance().isOnline()) {
        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);
        buffer = status.write(buffer, c, true);
        buffer = lastEof.write(buffer, c, true);
        c.write(buffer);
    } else {
        error.write(c);
    }
}

Example 100 with FieldPacket

use of io.mycat.net.mysql.FieldPacket in project Mycat_plus by coderczp.

the class ShowTables method response.

/**
 * response method.
 * @param c
 */
public static void response(ServerConnection c, String stmt, int type) {
    String showSchemal = SchemaUtil.parseShowTableSchema(stmt);
    String cSchema = showSchemal == null ? c.getSchema() : showSchemal;
    SchemaConfig schema = MycatServer.getInstance().getConfig().getSchemas().get(cSchema);
    if (schema != null) {
        // 不分库的schema，show tables从后端 mysql中查
        String node = schema.getDataNode();
        if (!Strings.isNullOrEmpty(node)) {
            c.execute(stmt, ServerParse.SHOW);
            return;
        }
    } else {
        c.writeErrMessage(ErrorCode.ER_NO_DB_ERROR, "No database selected");
        return;
    }
    // 分库的schema，直接从SchemaConfig中获取所有表名
    Map<String, String> parm = buildFields(c, stmt);
    java.util.Set<String> tableSet = getTableSet(c, parm);
    int i = 0;
    byte packetId = 0;
    header.packetId = ++packetId;
    fields[i] = PacketUtil.getField("Tables in " + parm.get(SCHEMA_KEY), Fields.FIELD_TYPE_VAR_STRING);
    fields[i++].packetId = ++packetId;
    eof.packetId = ++packetId;
    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
    packetId = eof.packetId;
    for (String name : tableSet) {
        RowDataPacket row = new RowDataPacket(FIELD_COUNT);
        row.add(StringUtil.encode(name.toLowerCase(), 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);
}