content: /*
   * 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 com.datastax.oss.driver.internal.core.metadata.schema.queries;
  
  import com.datastax.dse.driver.api.core.metadata.DseNodeProperties;
  import com.datastax.oss.driver.api.core.Version;
  import com.datastax.oss.driver.api.core.config.DriverExecutionProfile;
  import com.datastax.oss.driver.api.core.metadata.Node;
  import com.datastax.oss.driver.internal.core.channel.DriverChannel;
  import com.datastax.oss.driver.internal.core.context.InternalDriverContext;
  import net.jcip.annotations.ThreadSafe;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  @ThreadSafe
  public class DefaultSchemaQueriesFactory implements SchemaQueriesFactory {
  
    private static final Logger LOG = LoggerFactory.getLogger(DefaultSchemaQueriesFactory.class);
  
    protected final InternalDriverContext context;
    protected final String logPrefix;
  
    public DefaultSchemaQueriesFactory(InternalDriverContext context) {
      this.context = context;
      this.logPrefix = context.getSessionName();
    }
  
    @Override
    public SchemaQueries newInstance() {
      DriverChannel channel = context.getControlConnection().channel();
      if (channel == null || channel.closeFuture().isDone()) {
        throw new IllegalStateException("Control channel not available, aborting schema refresh");
      }
      Node node =
          context
              .getMetadataManager()
              .getMetadata()
              .findNode(channel.getEndPoint())
              .orElseThrow(
                  () ->
                      new IllegalStateException(
                          "Could not find control node metadata "
                              + channel.getEndPoint()
                              + ", aborting schema refresh"));
      return newInstance(node, channel);
    }
  
    protected SchemaQueries newInstance(Node node, DriverChannel channel) {
  
      DriverExecutionProfile config = context.getConfig().getDefaultProfile();
  
      Version dseVersion = (Version) node.getExtras().get(DseNodeProperties.DSE_VERSION);
      if (dseVersion != null) {
        dseVersion = dseVersion.nextStable();
  
        LOG.debug(
            "[{}] Sending schema queries to {} with DSE version {}", logPrefix, node, dseVersion);
        // 4.8 is the oldest version supported, which uses C* 2.1 schema
        if (dseVersion.compareTo(Version.V5_0_0) < 0) {
          return new Cassandra21SchemaQueries(channel, node, config, logPrefix);
        } else if (dseVersion.compareTo(Version.V6_7_0) < 0) {
          // 5.0 - 6.7 uses C* 3.0 schema
          return new Cassandra3SchemaQueries(channel, node, config, logPrefix);
        } else if (dseVersion.compareTo(Version.V6_8_0) < 0) {
          // 6.7 uses C* 4.0 schema
          return new Cassandra4SchemaQueries(channel, node, config, logPrefix);
        } else {
          // 6.8+ uses DSE 6.8 schema (C* 4.0 schema with graph metadata) (JAVA-1898)
          return new Dse68SchemaQueries(channel, node, config, logPrefix);
        }
      } else {
        Version cassandraVersion = node.getCassandraVersion();
        if (cassandraVersion == null) {
          LOG.warn(
              "[{}] Cassandra version missing for {}, defaulting to {}",
              logPrefix,
              node,
              Version.V3_0_0);
          cassandraVersion = Version.V3_0_0;
        } else {
          cassandraVersion = cassandraVersion.nextStable();
        }
        LOG.debug(
            "[{}] Sending schema queries to {} with version {}", logPrefix, node, cassandraVersion);
        if (cassandraVersion.compareTo(Version.V2_2_0) < 0) {
          return new Cassandra21SchemaQueries(channel, node, config, logPrefix);
        } else if (cassandraVersion.compareTo(Version.V3_0_0) < 0) {
          return new Cassandra22SchemaQueries(channel, node, config, logPrefix);
        } else if (cassandraVersion.compareTo(Version.V4_0_0) < 0) {
          return new Cassandra3SchemaQueries(channel, node, config, logPrefix);
        } else {
          return new Cassandra4SchemaQueries(channel, node, config, logPrefix);
        }
      }
    }
  }
  