com.datastax.oss.driver.internal.core.metadata.schema.queries.DefaultSchemaQueriesFactory Maven / Gradle / Ivy
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* distributed with this work for additional information
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* 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,
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* 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);
}
}
}
}