com.github.jcustenborder.kafka.connect.redis.RedisSessionImpl Maven / Gradle / Ivy

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A Kafka Connect connector receiving data from redis.
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/**
 * Copyright © 2017 Jeremy Custenborder ([email protected])
 *
 * Licensed 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 com.github.jcustenborder.kafka.connect.redis;

import io.lettuce.core.AbstractRedisClient;
import io.lettuce.core.ClientOptions;
import io.lettuce.core.RedisClient;
import io.lettuce.core.SocketOptions;
import io.lettuce.core.SslOptions;
import io.lettuce.core.api.StatefulConnection;
import io.lettuce.core.api.StatefulRedisConnection;
import io.lettuce.core.cluster.ClusterClientOptions;
import io.lettuce.core.cluster.RedisClusterClient;
import io.lettuce.core.cluster.api.StatefulRedisClusterConnection;
import io.lettuce.core.cluster.api.async.RedisClusterAsyncCommands;
import io.lettuce.core.codec.ByteArrayCodec;
import io.lettuce.core.codec.RedisCodec;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.time.Duration;

class RedisSessionImpl implements RedisSession {
  private static final Logger log = LoggerFactory.getLogger(RedisSessionImpl.class);

  private final AbstractRedisClient client;
  private final StatefulConnection connection;
  private final RedisClusterAsyncCommands asyncCommands;
  private final RedisSinkConnectorConfig config;

  RedisSessionImpl(AbstractRedisClient client, StatefulConnection connection, RedisClusterAsyncCommands asyncCommands, RedisSinkConnectorConfig config) {
    this.client = client;
    this.connection = connection;
    this.asyncCommands = asyncCommands;
    this.config = config;
  }

  public AbstractRedisClient client() {
    return this.client;
  }

  public StatefulConnection connection() {
    return this.connection;
  }

  public RedisClusterAsyncCommands asyncCommands() {
    return this.asyncCommands;
  }

  public static RedisSessionImpl create(RedisSinkConnectorConfig config) {
    RedisSessionImpl result;
    final RedisCodec codec = new ByteArrayCodec();

    final SslOptions sslOptions;

    if (config.sslEnabled) {
      SslOptions.Builder builder = SslOptions.builder();
      switch (config.sslProvider) {
        case JDK:
          builder.jdkSslProvider();
          break;
        case OPENSSL:
          builder.openSslProvider();
          break;
        default:
          throw new UnsupportedOperationException(
              String.format(
                  "%s is not a supported value for %s.",
                  config.sslProvider,
                  RedisConnectorConfig.SSL_PROVIDER_CONFIG
              )
          );
      }
      if (null != config.keystorePath) {
        if (null != config.keystorePassword) {
          builder.keystore(config.keystorePath, config.keystorePassword.toCharArray());
        } else {
          builder.keystore(config.keystorePath);
        }
      }
      if (null != config.truststorePath) {
        if (null != config.truststorePassword) {
          builder.truststore(config.truststorePath, config.keystorePassword);
        } else {
          builder.truststore(config.truststorePath);
        }
      }
      sslOptions = builder.build();
    } else {
      sslOptions = null;
    }

    final SocketOptions socketOptions = SocketOptions.builder()
        .tcpNoDelay(config.tcpNoDelay)
        .connectTimeout(Duration.ofMillis(config.connectTimeout))
        .keepAlive(config.keepAliveEnabled)
        .build();


    if (RedisConnectorConfig.ClientMode.Cluster == config.clientMode) {
      ClusterClientOptions.Builder clientOptions = ClusterClientOptions.builder()
          .requestQueueSize(config.requestQueueSize)
          .autoReconnect(config.autoReconnectEnabled);
      if (config.sslEnabled) {
        clientOptions.sslOptions(sslOptions);
      }
      final RedisClusterClient client = RedisClusterClient.create(config.redisURIs());
      client.setOptions(clientOptions.build());

      final StatefulRedisClusterConnection connection = client.connect(codec);
      result = new RedisSessionImpl(client, connection, connection.async(), config);
    } else if (RedisConnectorConfig.ClientMode.Standalone == config.clientMode) {
      final ClientOptions.Builder clientOptions = ClientOptions.builder()
          .socketOptions(socketOptions)
          .requestQueueSize(config.requestQueueSize)
          .autoReconnect(config.autoReconnectEnabled);
      if (config.sslEnabled) {
        clientOptions.sslOptions(sslOptions);
      }
      final RedisClient client = RedisClient.create(config.redisURIs().get(0));
      client.setOptions(clientOptions.build());
      final StatefulRedisConnection connection = client.connect(codec);
      result = new RedisSessionImpl(client, connection, connection.async(), config);
    } else {
      throw new UnsupportedOperationException(
          String.format("%s is not supported", config.clientMode)
      );
    }

    return result;
  }


  @Override
  public void close() throws Exception {
    this.connection.close();
  }
}