Examples with StargateClientState io.stargate.db.dse.impl.StargateClientState used on opensource projects

Example 1 with StargateClientState

use of io.stargate.db.dse.impl.StargateClientState in project stargate by stargate.

the class ProxyProtocolQueryInterceptor method interceptQuery.

@Override
public Single<ResultMessage> interceptQuery(CQLStatement statement, QueryState state, QueryOptions options, Map<String, ByteBuffer> customPayload, long queryStartNanoTime) {
    // see DseConnection
    assert state.getClientState() instanceof StargateClientState;
    StargateClientState clientState = (StargateClientState) state.getClientState();
    if (!isSystemLocalOrPeers(statement) || !clientState.proxyDestinationAddress().isPresent()) {
        return wrapped.map(i -> i.interceptQuery(statement, state, options, customPayload, queryStartNanoTime)).orElse(null);
    }
    InetSocketAddress destinationAddress = clientState.proxyDestinationAddress().get();
    boolean isPrivateDestination = destinationAddress.getAddress().isSiteLocalAddress();
    // If the destination is private, we want to use the "source" address of the PROXY header.
    // We stored that in clientState.getRemoteAddress().
    InetAddress systemLocalAddress = isPrivateDestination ? clientState.getRemoteAddress().getAddress() : destinationAddress.getAddress();
    SelectStatement selectStatement = (SelectStatement) statement;
    List<List<ByteBuffer>> rows;
    String tableName = selectStatement.table();
    boolean isPrivateLocal = systemLocalAddress.isSiteLocalAddress();
    Set<InetAddress> peers = isPrivateLocal ? privatePeers : publicPeers;
    if (tableName.equals(PeersSystemView.NAME)) {
        rows = peers.isEmpty() ? Collections.emptyList() : Lists.newArrayListWithCapacity(peers.size() - 1);
        for (InetAddress peer : peers) {
            if (!peer.equals(systemLocalAddress)) {
                rows.add(buildRow(selectStatement.getResultMetadata(), peer, peers));
            }
        }
    } else {
        assert tableName.equals(LocalNodeSystemView.NAME);
        rows = Collections.singletonList(buildRow(selectStatement.getResultMetadata(), systemLocalAddress, peers));
    }
    ResultSet resultSet = new ResultSet(selectStatement.getResultMetadata(), rows);
    return Single.just(new ResultMessage.Rows(resultSet));
}

Example 2 with StargateClientState

use of io.stargate.db.dse.impl.StargateClientState in project stargate by stargate.

the class DefaultQueryInterceptor method interceptSystemLocalOrPeers.

private static Single<ResultMessage> interceptSystemLocalOrPeers(CQLStatement statement, QueryState state, QueryOptions options, long queryStartNanoTime) {
    SelectStatement selectStatement = ((SelectStatement) statement);
    // Re-parse so that we can intercept and replace the keyspace.
    SelectStatement.Raw rawStatement = (SelectStatement.Raw) QueryProcessor.parseStatement(selectStatement.queryString);
    rawStatement.setKeyspace(SYSTEM_KEYSPACE_NAME);
    SelectStatement interceptStatement = rawStatement.prepare(state.getClientState());
    Single<ResultMessage.Rows> rows = interceptStatement.execute(state, options, queryStartNanoTime);
    return rows.map(r -> {
        // see DseConnection
        assert state.getClientState() instanceof StargateClientState;
        StargateClientState clientState = (StargateClientState) state.getClientState();
        clientState.boundPort().ifPresent(port -> replaceNativeTransportPort(r.result, port));
        return new ResultMessage.Rows(new ResultSet(selectStatement.getResultMetadata(), r.result.rows));
    });
}