package com.datastax.oss.driver.internal.core.metadata.schema.queries;
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.Metadata;
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 com.datastax.oss.driver.internal.core.metadata.NodeProperties;
import java.util.concurrent.CompletableFuture;
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(CompletableFuture<Metadata> refreshFuture) {
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, refreshFuture);
}
protected SchemaQueries newInstance(
Node node, DriverChannel channel, CompletableFuture<Metadata> refreshFuture) {
Version version = node.getCassandraVersion();
if (version == null) {
LOG.warn(
"[{}] Cassandra version missing for {}, defaulting to {}",
logPrefix,
node,
Version.V3_0_0);
version = Version.V3_0_0;
} else {
version = version.nextStable();
}
DriverExecutionProfile config = context.getConfig().getDefaultProfile();
LOG.debug("[{}] Sending schema queries to {} with version {}", logPrefix, node, version);
if (version.compareTo(Version.V2_2_0) < 0) {
return new Cassandra21SchemaQueries(channel, refreshFuture, config, logPrefix);
} else if (version.compareTo(Version.V3_0_0) < 0) {
return new Cassandra22SchemaQueries(channel, refreshFuture, config, logPrefix);
} else if (version.compareTo(Version.V4_0_0) < 0) {
return new Cassandra3SchemaQueries(channel, refreshFuture, config, logPrefix);
} else {
if (node.getExtras().containsKey(NodeProperties.DSE_VERSION)) {
Object dseVersionObj = node.getExtras().get(NodeProperties.DSE_VERSION);
assert (dseVersionObj instanceof Version);
if (((Version) dseVersionObj).compareTo(Version.V6_7_0) < 0) {
return new Cassandra3SchemaQueries(channel, refreshFuture, config, logPrefix);
}
}
return new Cassandra4SchemaQueries(channel, refreshFuture, config, logPrefix);
}
}
}