jbonofre commented on code in PR #495: URL: https://github.com/apache/arrow-java/pull/495#discussion_r1983692026
########## flight/flight-core/src/main/java/org/apache/arrow/flight/grpc/NettyClientBuilder.java: ########## @@ -0,0 +1,232 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.apache.arrow.flight.grpc; + +import io.grpc.ManagedChannel; +import io.grpc.netty.GrpcSslContexts; +import io.grpc.netty.NettyChannelBuilder; +import io.netty.channel.EventLoopGroup; +import io.netty.channel.ServerChannel; +import io.netty.handler.ssl.SslContextBuilder; +import io.netty.handler.ssl.util.InsecureTrustManagerFactory; +import java.io.InputStream; +import java.lang.reflect.InvocationTargetException; +import java.util.ArrayList; +import java.util.Collections; +import java.util.List; +import javax.net.ssl.SSLException; +import org.apache.arrow.flight.FlightClientMiddleware; +import org.apache.arrow.flight.Location; +import org.apache.arrow.flight.LocationSchemes; +import org.apache.arrow.memory.BufferAllocator; +import org.apache.arrow.util.Preconditions; + +/** + * A wrapper around gRPC's Netty builder. + * + * <p>It is recommended to use the Netty channel builder directly with {@link + * org.apache.arrow.flight.FlightGrpcUtils#createFlightClient(BufferAllocator, ManagedChannel)}. + * However, this class provides an adapter that implements the existing Flight-specific builder + * interface but allows usage of the Netty builder as well. + */ +public class NettyClientBuilder { + /** + * The maximum number of trace events to keep on the gRPC Channel. This value disables channel + * tracing. + */ + private static final int MAX_CHANNEL_TRACE_EVENTS = 0; + + protected BufferAllocator allocator; + protected Location location; + protected boolean forceTls = false; + protected int maxInboundMessageSize = Integer.MAX_VALUE; + protected InputStream trustedCertificates = null; + protected InputStream clientCertificate = null; + protected InputStream clientKey = null; + protected String overrideHostname = null; + protected List<FlightClientMiddleware.Factory> middleware = new ArrayList<>(); + protected boolean verifyServer = true; + + public NettyClientBuilder() {} + + public NettyClientBuilder(BufferAllocator allocator, Location location) { + this.allocator = Preconditions.checkNotNull(allocator); + this.location = Preconditions.checkNotNull(location); + } + + /** Force the client to connect over TLS. */ + public NettyClientBuilder useTls() { + this.forceTls = true; + return this; + } + + /** Override the hostname checked for TLS. Use with caution in production. */ + public NettyClientBuilder overrideHostname(final String hostname) { + this.overrideHostname = hostname; + return this; + } + + /** Set the maximum inbound message size. */ + public NettyClientBuilder maxInboundMessageSize(int maxSize) { + Preconditions.checkArgument(maxSize > 0); + this.maxInboundMessageSize = maxSize; + return this; + } + + /** Set the trusted TLS certificates. */ + public NettyClientBuilder trustedCertificates(final InputStream stream) { + this.trustedCertificates = Preconditions.checkNotNull(stream); + return this; + } + + /** Set the trusted TLS certificates. */ + public NettyClientBuilder clientCertificate( + final InputStream clientCertificate, final InputStream clientKey) { + Preconditions.checkNotNull(clientKey); + this.clientCertificate = Preconditions.checkNotNull(clientCertificate); + this.clientKey = Preconditions.checkNotNull(clientKey); + return this; + } + + public BufferAllocator allocator() { + return allocator; + } + + public NettyClientBuilder allocator(BufferAllocator allocator) { + this.allocator = Preconditions.checkNotNull(allocator); + return this; + } + + public NettyClientBuilder location(Location location) { + this.location = Preconditions.checkNotNull(location); + return this; + } + + public List<FlightClientMiddleware.Factory> middleware() { + return Collections.unmodifiableList(middleware); + } + + public NettyClientBuilder intercept(FlightClientMiddleware.Factory factory) { + middleware.add(factory); + return this; + } + + public NettyClientBuilder verifyServer(boolean verifyServer) { + this.verifyServer = verifyServer; + return this; + } + + /** Create the client from this builder. */ + public NettyChannelBuilder build() { + final NettyChannelBuilder builder; + + switch (location.getUri().getScheme()) { Review Comment: FYI, I'm investigating the Netty channel address depending of the scheme as it seems we have a weird behavior here. Your change move that from `FlightClient` to `NettyClientBuilder` so it looks good to me. ########## flight/flight-sql-jdbc-core/pom.xml: ########## @@ -47,6 +47,21 @@ under the License. </exclusions> </dependency> + <dependency> + <groupId>io.grpc</groupId> + <artifactId>grpc-api</artifactId> Review Comment: I'm surprised we have to explicitly define these dependencies, I thought they came transitively from arrow flight. ########## flight/flight-sql-jdbc-core/src/main/java/org/apache/arrow/driver/jdbc/ArrowFlightConnection.java: ########## @@ -113,6 +114,8 @@ private static ArrowFlightSqlClientHandler createNewClientHandler( .withRetainCookies(config.retainCookies()) .withRetainAuth(config.retainAuth()) .withCatalog(config.getCatalog()) + .withClientCache(config.useClientCache() ? new FlightClientCache() : null) Review Comment: That's a new feature (client caching), right ? It's ok in the PR but it looks a big "unrelated" to the PR title 😄 -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: github-unsubscr...@arrow.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
