com.datastax.oss.driver.internal.core.metadata.RemoveNodeRefresh Maven / Gradle / Ivy
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* to you under the Apache License, Version 2.0 (the
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* 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.net.InetSocketAddress;
import java.util.Map;
import java.util.UUID;
import net.jcip.annotations.ThreadSafe;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@ThreadSafe
public class RemoveNodeRefresh extends NodesRefresh {
private static final Logger LOG = LoggerFactory.getLogger(RemoveNodeRefresh.class);
@VisibleForTesting final InetSocketAddress broadcastRpcAddressToRemove;
RemoveNodeRefresh(InetSocketAddress broadcastRpcAddressToRemove) {
this.broadcastRpcAddressToRemove = broadcastRpcAddressToRemove;
}
@Override
public Result compute(
DefaultMetadata oldMetadata, boolean tokenMapEnabled, InternalDriverContext context) {
String logPrefix = context.getSessionName();
Map oldNodes = oldMetadata.getNodes();
ImmutableMap.Builder newNodesBuilder = ImmutableMap.builder();
Node removedNode = null;
for (Node node : oldNodes.values()) {
if (node.getBroadcastRpcAddress().isPresent()
&& node.getBroadcastRpcAddress().get().equals(broadcastRpcAddressToRemove)) {
removedNode = node;
} else {
assert node.getHostId() != null; // nodes in metadata.getNodes() always have their id set
newNodesBuilder.put(node.getHostId(), node);
}
}
if (removedNode == null) {
// This should never happen because we already check the event in NodeStateManager, but handle
// just in case.
LOG.debug("[{}] Couldn't find node {} to remove", logPrefix, broadcastRpcAddressToRemove);
return new Result(oldMetadata);
} else {
LOG.debug("[{}] Removing node {}", logPrefix, removedNode);
return new Result(
oldMetadata.withNodes(newNodesBuilder.build(), tokenMapEnabled, false, null, context),
ImmutableList.of(NodeStateEvent.removed((DefaultNode) removedNode)));
}
}
}