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NO-JIRA Fix Possible NPE in connectToNodeInReplicatedCluster 

Variable possibleLive may be null, as signified by trace log above, also dedupe code.
This commit is contained in:
Michael André Pearce 2019-01-18 23:09:53 +00:00 committed by Howard Gao
parent 3aebe74d07
commit 55732d401f
1 changed files with 20 additions and 15 deletions
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35
artemis-server/src/main/java/org/apache/activemq/artemis/core/server/impl/SharedNothingBackupActivation.java
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@ -213,22 +213,13 @@ public final class SharedNothingBackupActivation extends Activation {
activeMQServer.getNodeManager().setNodeID(nodeID);
}
try {
if (logger.isTraceEnabled()) {
logger.trace("Calling clusterController.connectToNodeInReplicatedCluster(" + possibleLive != null ? possibleLive.getA() : null + ")");
}
clusterControl = clusterController.connectToNodeInReplicatedCluster(possibleLive.getA());
} catch (Exception e) {
logger.debug(e.getMessage(), e);
if (possibleLive != null && possibleLive.getB() != null) {
try {
clusterControl = clusterController.connectToNodeInReplicatedCluster(possibleLive.getB());
} catch (Exception e1) {
clusterControl = null;
}
} else {
clusterControl = null;
if (possibleLive != null) {
clusterControl = tryConnectToNodeInReplicatedCluster(clusterController, possibleLive.getA());
if (clusterControl == null) {
clusterControl = tryConnectToNodeInReplicatedCluster(clusterController, possibleLive.getB());
}
} else {
clusterControl = null;
}
if (clusterControl == null) {
@ -367,6 +358,20 @@ public final class SharedNothingBackupActivation extends Activation {
}
}
private static ClusterControl tryConnectToNodeInReplicatedCluster(ClusterController clusterController, TransportConfiguration tc) {
try {
if (logger.isTraceEnabled()) {
logger.trace("Calling clusterController.connectToNodeInReplicatedCluster(" + tc + ")");
}
if (tc != null) {
return clusterController.connectToNodeInReplicatedCluster(tc);
}
} catch (Exception e) {
logger.debug(e.getMessage(), e);
}
return null;
}
@Override
public void close(final boolean permanently, boolean restarting) throws Exception {
synchronized (this) {