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feat: update inactivity handling #18

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Merged
merged 1 commit into from
Oct 1, 2023
Merged

feat: update inactivity handling #18

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17 changes: 13 additions & 4 deletions src/main/java/com/topcoder/dal/DBAccessor.java
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Original file line number Diff line number Diff line change
Expand Up @@ -326,9 +326,15 @@ public StreamObserver<QueryRequest> streamQuery(StreamObserver<QueryResponse> re
AtomicLong lastTimerReset = new AtomicLong(System.nanoTime() - DEBOUNCE_INTERVAL.toNanos() - 1);
private final ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(1);
AtomicReference<ScheduledFuture<?>> streamTimeoutFuture = new AtomicReference<>(scheduleStreamTimeout());
private Boolean isStreamAlive = true;

@Override
public void onNext(QueryRequest request) {
if (!isStreamAlive) {
responseObserver.onError(Status.DEADLINE_EXCEEDED.withDescription("Stream closed due to inactivity")
.asRuntimeException());
return;
}
cancelStreamTimeout();
try {
QueryResponse response = executeQuery(request.getQuery(), con);
Expand All @@ -350,9 +356,11 @@ public void onError(Throwable throwable) {

@Override
public void onCompleted() {
cancelStreamTimeout();
commit();
responseObserver.onCompleted();
if (isStreamAlive) {
cancelStreamTimeout();
commit();
responseObserver.onCompleted();
}
}

private void commit() {
Expand All @@ -362,6 +370,7 @@ private void commit() {

private void rollback() {
logger.info("Rolling back transaction");
isStreamAlive = false;
jdbcTemplate.rollback(con);
}

Expand Down Expand Up @@ -390,7 +399,7 @@ private ScheduledFuture<?> scheduleStreamTimeout() {
logger.error(message);
rollback();
cancelStreamTimeout();
responseObserver.onError(Status.DEADLINE_EXCEEDED.withDescription(message).asRuntimeException());
responseObserver.onCompleted();
}, streamTimeout.plus(DEBOUNCE_INTERVAL).toNanos(), TimeUnit.NANOSECONDS);
}
};
Expand Down