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[fix][client] Fix ArrayIndexOutOfBoundsException when using SameAuthParamsLookupAutoClusterFailover #23336

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[fix][client] Fix ArrayIndexOutOfBoundsException when using SameAuthParamsLookupAutoClusterFailover #23336

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51 changes: 29 additions & 22 deletions .../src/main/java/org/apache/pulsar/client/impl/SameAuthParamsLookupAutoClusterFailover.java
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Original file line number Diff line number Diff line change
Expand Up @@ -71,29 +71,36 @@ public void initialize(PulsarClient client) {
this.executor = EventLoopUtil.newEventLoopGroup(1, false,
new ExecutorProvider.ExtendedThreadFactory("broker-service-url-check"));
scheduledCheckTask = executor.scheduleAtFixedRate(() -> {
if (closed) {
return;
}
checkPulsarServices();
int firstHealthyPulsarService = firstHealthyPulsarService();
if (firstHealthyPulsarService == currentPulsarServiceIndex) {
return;
}
if (firstHealthyPulsarService < 0) {
int failoverTo = findFailoverTo();
if (failoverTo < 0) {
// No healthy pulsar service to connect.
log.error("Failed to choose a pulsar service to connect, no one pulsar service is healthy. Current"
+ " pulsar service: [{}] {}. States: {}, Counters: {}", currentPulsarServiceIndex,
pulsarServiceUrlArray[currentPulsarServiceIndex], Arrays.toString(pulsarServiceStateArray),
Arrays.toString(checkCounterArray));
try {
if (closed) {
return;
}
checkPulsarServices();
int firstHealthyPulsarService = firstHealthyPulsarService();
if (firstHealthyPulsarService == currentPulsarServiceIndex) {
return;
}
if (firstHealthyPulsarService < 0) {
int failoverTo = findFailoverTo();
if (failoverTo < 0) {
// No healthy pulsar service to connect.
log.error(
"Failed to choose a pulsar service to connect, no one pulsar service is healthy."
+ " Current pulsar service: [{}] {}. States: {}, Counters: {}",
currentPulsarServiceIndex,
pulsarServiceUrlArray[currentPulsarServiceIndex],
Arrays.toString(pulsarServiceStateArray),
Arrays.toString(checkCounterArray));
} else {
// Failover to low priority pulsar service.
updateServiceUrl(failoverTo);
}
} else {
// Failover to low priority pulsar service.
updateServiceUrl(failoverTo);
// Back to high priority pulsar service.
updateServiceUrl(firstHealthyPulsarService);
}
} else {
// Back to high priority pulsar service.
updateServiceUrl(firstHealthyPulsarService);
} catch (Exception ex) {
log.error("Failed to re-check cluster status", ex);
}
}, checkHealthyIntervalMs, checkHealthyIntervalMs, TimeUnit.MILLISECONDS);
}
Expand Down Expand Up @@ -123,7 +130,7 @@ private int firstHealthyPulsarService() {
}

private int findFailoverTo() {
for (int i = currentPulsarServiceIndex + 1; i <= pulsarServiceUrlArray.length; i++) {
for (int i = currentPulsarServiceIndex + 1; i < pulsarServiceUrlArray.length; i++) {
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Just wondering if this logic is correct in the first place. Shouldn't this wrap around the array?

the for loop in checkPulsarServices looks strange too.

if (probeAvailable(i)) {
return i;
}
Expand Down
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