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transport: edit TransportConnectionListener for close exceptions (#129015)

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The TransportConnectionListener interface has previously included the
Transport.Connection being closed and unregistered in its onNodeDisconnected
callback. This is not in use, and can be removed as it is also available in the
onConnectionClosed callback. It is being replaced with a Nullable exception that
caused the close. This is being used in pending work (ES-11448) to differentiate
network issues from node restarts.

Closes ES-12007
This commit is contained in:
Simon Chase 2025-06-05 15:20:08 -07:00 • committed by GitHub
parent aceaf23130
commit ee716f11b9
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11 changed files with 42 additions and 23 deletions
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4
server/src/main/java/org/elasticsearch/cluster/coordination/FollowersChecker.java
View file

@ -26,6 +26,7 @@ import org.elasticsearch.common.util.concurrent.AbstractRunnable;
import org.elasticsearch.common.util.concurrent.EsExecutors;
import org.elasticsearch.common.util.concurrent.EsRejectedExecutionException;
import org.elasticsearch.core.CheckedRunnable;
import org.elasticsearch.core.Nullable;
import org.elasticsearch.core.TimeValue;
import org.elasticsearch.monitor.NodeHealthService;
import org.elasticsearch.monitor.StatusInfo;
@ -33,7 +34,6 @@ import org.elasticsearch.threadpool.ThreadPool.Names;
import org.elasticsearch.transport.AbstractTransportRequest;
import org.elasticsearch.transport.ConnectTransportException;
import org.elasticsearch.transport.ReceiveTimeoutTransportException;
import org.elasticsearch.transport.Transport;
import org.elasticsearch.transport.TransportConnectionListener;
import org.elasticsearch.transport.TransportException;
import org.elasticsearch.transport.TransportRequestOptions;
@ -137,7 +137,7 @@ public final class FollowersChecker {
);
transportService.addConnectionListener(new TransportConnectionListener() {
@Override
public void onNodeDisconnected(DiscoveryNode node, Transport.Connection connection) {
public void onNodeDisconnected(DiscoveryNode node, @Nullable Exception closeException) {
handleDisconnectedNode(node);
}
});

3
server/src/main/java/org/elasticsearch/cluster/coordination/LeaderChecker.java
View file

@ -32,7 +32,6 @@ import org.elasticsearch.transport.AbstractTransportRequest;
import org.elasticsearch.transport.ConnectTransportException;
import org.elasticsearch.transport.NodeDisconnectedException;
import org.elasticsearch.transport.ReceiveTimeoutTransportException;
import org.elasticsearch.transport.Transport;
import org.elasticsearch.transport.TransportConnectionListener;
import org.elasticsearch.transport.TransportException;
import org.elasticsearch.transport.TransportRequestOptions;
@ -124,7 +123,7 @@ public class LeaderChecker {
transportService.addConnectionListener(new TransportConnectionListener() {
@Override
public void onNodeDisconnected(DiscoveryNode node, Transport.Connection connection) {
public void onNodeDisconnected(DiscoveryNode node, @Nullable Exception closeException) {
handleDisconnectedNode(node);
}
});

25
server/src/main/java/org/elasticsearch/transport/ClusterConnectionManager.java
View file

@ -229,11 +229,26 @@ public class ClusterConnectionManager implements ConnectionManager {
try {
connectionListener.onNodeConnected(node, conn);
} finally {
conn.addCloseListener(ActionListener.running(() -> {
connectedNodes.remove(node, conn);
connectionListener.onNodeDisconnected(node, conn);
managerRefs.decRef();
}));
conn.addCloseListener(new ActionListener<Void>() {
@Override
public void onResponse(Void ignored) {
handleClose(null);
}
@Override
public void onFailure(Exception e) {
handleClose(e);
}
void handleClose(@Nullable Exception e) {
connectedNodes.remove(node, conn);
try {
connectionListener.onNodeDisconnected(node, e);
} finally {
managerRefs.decRef();
}
}
});
conn.addCloseListener(ActionListener.running(() -> {
if (connectingRefCounter.hasReferences() == false) {

4
server/src/main/java/org/elasticsearch/transport/ConnectionManager.java
View file

@ -60,9 +60,9 @@ public interface ConnectionManager extends Closeable {
private final CopyOnWriteArrayList<TransportConnectionListener> listeners = new CopyOnWriteArrayList<>();
@Override
public void onNodeDisconnected(DiscoveryNode key, Transport.Connection connection) {
public void onNodeDisconnected(DiscoveryNode key, @Nullable Exception closeException) {
for (TransportConnectionListener listener : listeners) {
listener.onNodeDisconnected(key, connection);
listener.onNodeDisconnected(key, closeException);
}
}

2
server/src/main/java/org/elasticsearch/transport/RemoteConnectionManager.java
View file

@ -61,7 +61,7 @@ public class RemoteConnectionManager implements ConnectionManager {
}
@Override
public void onNodeDisconnected(DiscoveryNode node, Transport.Connection connection) {
public void onNodeDisconnected(DiscoveryNode node, @Nullable Exception closeException) {
removeConnectedNode(node);
}
});

3
server/src/main/java/org/elasticsearch/transport/RemoteConnectionStrategy.java
View file

@ -21,6 +21,7 @@ import org.elasticsearch.common.settings.Setting;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.util.concurrent.AbstractRunnable;
import org.elasticsearch.common.util.concurrent.EsRejectedExecutionException;
import org.elasticsearch.core.Nullable;
import org.elasticsearch.core.TimeValue;
import org.elasticsearch.threadpool.ThreadPool;
@ -339,7 +340,7 @@ public abstract class RemoteConnectionStrategy implements TransportConnectionLis
protected abstract ConnectionStrategy strategyType();
@Override
public void onNodeDisconnected(DiscoveryNode node, Transport.Connection connection) {
public void onNodeDisconnected(DiscoveryNode node, @Nullable Exception closeException) {
if (shouldOpenMoreConnections()) {
// try to reconnect and fill up the slot of the disconnected node
connect(

3
server/src/main/java/org/elasticsearch/transport/TransportConnectionListener.java
View file

@ -10,6 +10,7 @@
package org.elasticsearch.transport;
import org.elasticsearch.cluster.node.DiscoveryNode;
import org.elasticsearch.core.Nullable;
/**
* A listener interface that allows to react on transport events. All methods may be
@ -38,5 +39,5 @@ public interface TransportConnectionListener {
/**
* Called once a node connection is closed and unregistered.
*/
default void onNodeDisconnected(DiscoveryNode node, Transport.Connection connection) {}
default void onNodeDisconnected(DiscoveryNode node, @Nullable Exception closeException) {}
}

5
server/src/test/java/org/elasticsearch/action/search/TransportSearchActionTests.java
View file

@ -52,6 +52,7 @@ import org.elasticsearch.common.settings.ClusterSettings;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.transport.TransportAddress;
import org.elasticsearch.common.util.set.Sets;
import org.elasticsearch.core.Nullable;
import org.elasticsearch.core.TimeValue;
import org.elasticsearch.core.Tuple;
import org.elasticsearch.index.Index;
@ -831,7 +832,7 @@ public class TransportSearchActionTests extends ESTestCase {
CountDownLatch disconnectedLatch = new CountDownLatch(numDisconnectedClusters);
RemoteClusterServiceTests.addConnectionListener(remoteClusterService, new TransportConnectionListener() {
@Override
public void onNodeDisconnected(DiscoveryNode node, Transport.Connection connection) {
public void onNodeDisconnected(DiscoveryNode node, @Nullable Exception closeException) {
if (disconnectedNodes.remove(node)) {
disconnectedLatch.countDown();
}
@ -1134,7 +1135,7 @@ public class TransportSearchActionTests extends ESTestCase {
CountDownLatch disconnectedLatch = new CountDownLatch(numDisconnectedClusters);
RemoteClusterServiceTests.addConnectionListener(remoteClusterService, new TransportConnectionListener() {
@Override
public void onNodeDisconnected(DiscoveryNode node, Transport.Connection connection) {
public void onNodeDisconnected(DiscoveryNode node, @Nullable Exception closeException) {
if (disconnectedNodes.remove(node)) {
disconnectedLatch.countDown();
}

3
server/src/test/java/org/elasticsearch/cluster/NodeConnectionsServiceTests.java
View file

@ -30,6 +30,7 @@ import org.elasticsearch.common.transport.TransportAddress;
import org.elasticsearch.common.util.concurrent.DeterministicTaskQueue;
import org.elasticsearch.core.AbstractRefCounted;
import org.elasticsearch.core.CheckedRunnable;
import org.elasticsearch.core.Nullable;
import org.elasticsearch.core.RefCounted;
import org.elasticsearch.core.TimeValue;
import org.elasticsearch.test.ESTestCase;
@ -251,7 +252,7 @@ public class NodeConnectionsServiceTests extends ESTestCase {
final AtomicReference<ActionListener<DiscoveryNode>> disconnectListenerRef = new AtomicReference<>();
transportService.addConnectionListener(new TransportConnectionListener() {
@Override
public void onNodeDisconnected(DiscoveryNode node, Transport.Connection connection) {
public void onNodeDisconnected(DiscoveryNode node, @Nullable Exception closeException) {
final ActionListener<DiscoveryNode> disconnectListener = disconnectListenerRef.getAndSet(null);
if (disconnectListener != null) {
disconnectListener.onResponse(node);

7
server/src/test/java/org/elasticsearch/transport/ClusterConnectionManagerTests.java
View file

@ -23,6 +23,7 @@ import org.elasticsearch.common.util.concurrent.ConcurrentCollections;
import org.elasticsearch.common.util.concurrent.RunOnce;
import org.elasticsearch.common.util.concurrent.ThreadContext;
import org.elasticsearch.core.AbstractRefCounted;
import org.elasticsearch.core.Nullable;
import org.elasticsearch.core.Releasable;
import org.elasticsearch.core.Releasables;
import org.elasticsearch.core.TimeValue;
@ -101,7 +102,7 @@ public class ClusterConnectionManagerTests extends ESTestCase {
}
@Override
public void onNodeDisconnected(DiscoveryNode node, Transport.Connection connection) {
public void onNodeDisconnected(DiscoveryNode node, @Nullable Exception closeException) {
nodeDisconnectedCount.incrementAndGet();
}
});
@ -658,7 +659,7 @@ public class ClusterConnectionManagerTests extends ESTestCase {
}
@Override
public void onNodeDisconnected(DiscoveryNode node, Transport.Connection connection) {
public void onNodeDisconnected(DiscoveryNode node, @Nullable Exception closeException) {
nodeDisconnectedCount.incrementAndGet();
}
});
@ -698,7 +699,7 @@ public class ClusterConnectionManagerTests extends ESTestCase {
}
@Override
public void onNodeDisconnected(DiscoveryNode node, Transport.Connection connection) {
public void onNodeDisconnected(DiscoveryNode node, @Nullable Exception closeException) {
nodeDisconnectedCount.incrementAndGet();
}
});

6
test/framework/src/main/java/org/elasticsearch/transport/AbstractSimpleTransportTestCase.java
View file

@ -202,7 +202,7 @@ public abstract class AbstractSimpleTransportTestCase extends ESTestCase {
}
@Override
public void onNodeDisconnected(DiscoveryNode node, Transport.Connection connection) {
public void onNodeDisconnected(DiscoveryNode node, @Nullable Exception closeException) {
fail("disconnect should not be called " + node);
}
};
@ -924,7 +924,7 @@ public abstract class AbstractSimpleTransportTestCase extends ESTestCase {
}
@Override
public void onNodeDisconnected(DiscoveryNode node, Transport.Connection connection) {
public void onNodeDisconnected(DiscoveryNode node, @Nullable Exception closeException) {
latch.countDown();
}
};
@ -2118,7 +2118,7 @@ public abstract class AbstractSimpleTransportTestCase extends ESTestCase {
}
@Override
public void onNodeDisconnected(DiscoveryNode node, Transport.Connection connection) {
public void onNodeDisconnected(DiscoveryNode node, @Nullable Exception closeException) {
fail("disconnect should not be called " + node);
}
};