com.datastax.oss.driver.internal.core.metadata.AddNodeRefresh Maven / Gradle / Ivy
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* to you under the Apache License, Version 2.0 (the
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* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
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package com.datastax.oss.driver.internal.core.metadata;
import com.datastax.oss.driver.api.core.metadata.Node;
import com.datastax.oss.driver.internal.core.context.InternalDriverContext;
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.Map;
import java.util.UUID;
import net.jcip.annotations.ThreadSafe;
@ThreadSafe
public class AddNodeRefresh extends NodesRefresh {
@VisibleForTesting final NodeInfo newNodeInfo;
AddNodeRefresh(NodeInfo newNodeInfo) {
this.newNodeInfo = newNodeInfo;
}
@Override
public Result compute(
DefaultMetadata oldMetadata, boolean tokenMapEnabled, InternalDriverContext context) {
Map oldNodes = oldMetadata.getNodes();
Node existing = oldNodes.get(newNodeInfo.getHostId());
if (existing == null) {
DefaultNode newNode = new DefaultNode(newNodeInfo.getEndPoint(), context);
copyInfos(newNodeInfo, newNode, context);
Map newNodes =
ImmutableMap.builder()
.putAll(oldNodes)
.put(newNode.getHostId(), newNode)
.build();
return new Result(
oldMetadata.withNodes(newNodes, tokenMapEnabled, false, null, context),
ImmutableList.of(NodeStateEvent.added(newNode)));
} else {
// If a node is restarted after changing its broadcast RPC address, Cassandra considers that
// an addition, even though the host_id hasn't changed :(
// Update the existing instance and emit an UP event to trigger a pool reconnection.
if (!existing.getEndPoint().equals(newNodeInfo.getEndPoint())) {
copyInfos(newNodeInfo, ((DefaultNode) existing), context);
assert newNodeInfo.getBroadcastRpcAddress().isPresent(); // always for peer nodes
return new Result(
oldMetadata,
ImmutableList.of(TopologyEvent.suggestUp(newNodeInfo.getBroadcastRpcAddress().get())));
} else {
return new Result(oldMetadata);
}
}
}
}