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fix: Message ordering fix for #1889 by michaelpri10 · Pull Request #1903 · googleapis/java-pubsub · GitHub
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fix: Message ordering fix for #1889 #1903

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michaelpri10 merged 10 commits into from
Feb 9, 2024
Merged

fix: Message ordering fix for #1889 #1903

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b433095
chore: change assignees for issues and PRs to michaelpri10
michaelpri10 Feb 7, 2024
83b6ec3
Merge branch 'googleapis:main' into main
michaelpri10 Feb 7, 2024
b3f1dab
🦉 Updates from OwlBot post-processor
gcf-owl-bot[bot] Feb 8, 2024
7427cc0
fix: Revert PR#1807 and use a LinkedHasMap in the MessageDispatcher
michaelpri10 Feb 8, 2024
9fbb3a7
fix: Make processedReceivedMessages thread-safe
michaelpri10 Feb 8, 2024
962b1f9
Merge branch 'googleapis:main' into message-ordering-fix
michaelpri10 Feb 8, 2024
7ce6868
Merge branch 'googleapis:main' into main
michaelpri10 Feb 9, 2024
2a80a8b
Merge branch 'main' into message-ordering-fix
michaelpri10 Feb 9, 2024
b2fa5dd
fix: Only synchronize on the outstandingReceipts object in the Messag…
michaelpri10 Feb 9, 2024
05d8f0d
Merge branch 'message-ordering-fix' of https://github.com/michaelpri1…
michaelpri10 Feb 9, 2024
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52 changes: 29 additions & 23 deletions google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/MessageDispatcher.java
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Original file line number Diff line number Diff line change
Expand Up @@ -31,6 +31,7 @@
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
Expand Down Expand Up @@ -92,8 +93,8 @@ class MessageDispatcher {
private final LinkedBlockingQueue<AckRequestData> pendingAcks = new LinkedBlockingQueue<>();
private final LinkedBlockingQueue<AckRequestData> pendingNacks = new LinkedBlockingQueue<>();
private final LinkedBlockingQueue<AckRequestData> pendingReceipts = new LinkedBlockingQueue<>();
private final ConcurrentMap<String, ReceiptCompleteData> outstandingReceipts =
new ConcurrentHashMap<String, ReceiptCompleteData>();
private final LinkedHashMap<String, ReceiptCompleteData> outstandingReceipts =
new LinkedHashMap<String, ReceiptCompleteData>();
private final AtomicInteger messageDeadlineSeconds = new AtomicInteger();
private final AtomicBoolean extendDeadline = new AtomicBoolean(true);
private final Lock jobLock;
Expand Down Expand Up @@ -397,7 +398,9 @@ void processReceivedMessages(List<ReceivedMessage> messages) {
if (this.exactlyOnceDeliveryEnabled.get()) {
// For exactly once deliveries we don't add to outstanding batch because we first
// process the receipt modack. If that is successful then we process the message.
outstandingReceipts.put(message.getAckId(), new ReceiptCompleteData(outstandingMessage));
synchronized (outstandingReceipts) {
outstandingReceipts.put(message.getAckId(), new ReceiptCompleteData(outstandingMessage));
}
} else if (pendingMessages.putIfAbsent(message.getAckId(), ackHandler) != null) {
// putIfAbsent puts ackHandler if ackID isn't previously mapped, then return the
// previously-mapped element.
Expand All @@ -417,33 +420,36 @@ void processReceivedMessages(List<ReceivedMessage> messages) {
}

void notifyAckSuccess(AckRequestData ackRequestData) {

if (outstandingReceipts.containsKey(ackRequestData.getAckId())) {
outstandingReceipts.get(ackRequestData.getAckId()).notifyReceiptComplete();
List<OutstandingMessage> outstandingBatch = new ArrayList<>();

for (Iterator<Entry<String, ReceiptCompleteData>> it =
outstandingReceipts.entrySet().iterator();
it.hasNext(); ) {
Map.Entry<String, ReceiptCompleteData> receipt = it.next();
// If receipt is complete then add to outstandingBatch to process the batch
if (receipt.getValue().isReceiptComplete()) {
it.remove();
if (pendingMessages.putIfAbsent(
receipt.getKey(), receipt.getValue().getOutstandingMessage().ackHandler)
== null) {
outstandingBatch.add(receipt.getValue().getOutstandingMessage());
synchronized (outstandingReceipts) {
if (outstandingReceipts.containsKey(ackRequestData.getAckId())) {
outstandingReceipts.get(ackRequestData.getAckId()).notifyReceiptComplete();
List<OutstandingMessage> outstandingBatch = new ArrayList<>();

for (Iterator<Entry<String, ReceiptCompleteData>> it =
outstandingReceipts.entrySet().iterator();
it.hasNext(); ) {
Map.Entry<String, ReceiptCompleteData> receipt = it.next();
// If receipt is complete then add to outstandingBatch to process the batch
if (receipt.getValue().isReceiptComplete()) {
it.remove();
if (pendingMessages.putIfAbsent(
receipt.getKey(), receipt.getValue().getOutstandingMessage().ackHandler)
== null) {
outstandingBatch.add(receipt.getValue().getOutstandingMessage());
}
} else {
break;
}
} else {
break;
}
processBatch(outstandingBatch);
}
processBatch(outstandingBatch);
}
}

void notifyAckFailed(AckRequestData ackRequestData) {
outstandingReceipts.remove(ackRequestData.getAckId());
synchronized (outstandingReceipts) {
outstandingReceipts.remove(ackRequestData.getAckId());
}
}

private void processBatch(List<OutstandingMessage> batch) {
Expand Down