com.datastax.oss.driver.internal.core.metadata.InitialNodeListRefresh Maven / Gradle / Ivy
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* 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,
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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;
import com.datastax.oss.driver.api.core.metadata.EndPoint;
import com.datastax.oss.driver.api.core.metadata.Node;
import com.datastax.oss.driver.internal.core.context.InternalDriverContext;
import com.datastax.oss.driver.internal.core.metadata.token.TokenFactory;
import com.datastax.oss.driver.internal.core.metadata.token.TokenFactoryRegistry;
import com.datastax.oss.driver.shaded.guava.common.annotations.VisibleForTesting;
import com.datastax.oss.driver.shaded.guava.common.collect.ImmutableList;
import com.datastax.oss.driver.shaded.guava.common.collect.ImmutableMap;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.UUID;
import net.jcip.annotations.ThreadSafe;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* The first node list refresh: contact points are not in the metadata yet, we need to copy them
* over.
*/
@ThreadSafe
class InitialNodeListRefresh extends NodesRefresh {
private static final Logger LOG = LoggerFactory.getLogger(InitialNodeListRefresh.class);
@VisibleForTesting final Iterable nodeInfos;
@VisibleForTesting final Set contactPoints;
InitialNodeListRefresh(Iterable nodeInfos, Set contactPoints) {
this.nodeInfos = nodeInfos;
this.contactPoints = contactPoints;
}
@Override
public Result compute(
DefaultMetadata oldMetadata, boolean tokenMapEnabled, InternalDriverContext context) {
String logPrefix = context.getSessionName();
TokenFactoryRegistry tokenFactoryRegistry = context.getTokenFactoryRegistry();
// Since this is the first refresh, and we've stored contact points separately until now, the
// metadata is empty.
assert oldMetadata == DefaultMetadata.EMPTY;
TokenFactory tokenFactory = null;
Map newNodes = new HashMap<>();
for (NodeInfo nodeInfo : nodeInfos) {
UUID hostId = nodeInfo.getHostId();
if (newNodes.containsKey(hostId)) {
LOG.warn(
"[{}] Found duplicate entries with host_id {} in system.peers, "
+ "keeping only the first one",
logPrefix,
hostId);
} else {
EndPoint endPoint = nodeInfo.getEndPoint();
DefaultNode node = findIn(contactPoints, endPoint);
if (node == null) {
node = new DefaultNode(endPoint, context);
LOG.debug("[{}] Adding new node {}", logPrefix, node);
} else {
LOG.debug("[{}] Copying contact point {}", logPrefix, node);
}
if (tokenMapEnabled && tokenFactory == null && nodeInfo.getPartitioner() != null) {
tokenFactory = tokenFactoryRegistry.tokenFactoryFor(nodeInfo.getPartitioner());
}
copyInfos(nodeInfo, node, context);
newNodes.put(hostId, node);
}
}
ImmutableList.Builder