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Potential fix for database queue not shutting down properly (#85)

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This commit is contained in:
OmerBenGera 2024-03-01 14:27:01 +02:00
parent dcd20b0245
commit 2b05c098d5
1 changed files with 28 additions and 10 deletions
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38
src/main/java/com/bgsoftware/wildloaders/utils/database/DatabaseQueue.java
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@ -21,11 +21,11 @@ public final class DatabaseQueue {
private static final Map<Query, Map<Object, Integer>> alreadyObjectsCalled = new ConcurrentHashMap<>();
private static final AtomicInteger currentIndex = new AtomicInteger(0);
public static void queue(Object caller, QueryParameters parameters){
public static void queue(Object caller, QueryParameters parameters) {
Map<Object, Integer> queryCalls = alreadyObjectsCalled.computeIfAbsent(parameters.getQuery(), q -> new ConcurrentHashMap<>());
Integer existingParametersIndex = queryCalls.get(caller);
if(existingParametersIndex != null)
if (existingParametersIndex != null)
queuedCalls.remove(existingParametersIndex);
int currentIndex = DatabaseQueue.currentIndex.getAndIncrement();
@ -38,19 +38,37 @@ public final class DatabaseQueue {
queueService.scheduleAtFixedRate(DatabaseQueue::processQueue, QUEUE_INTERVAL, QUEUE_INTERVAL, TimeUnit.SECONDS);
}
static void stop(){
static void stop() {
// Stopping the queue timer, and calling the process queue manually
queueService.shutdownNow();
shutdownAndAwaitTermination();
processQueue();
}
private static void processQueue(){
private static void shutdownAndAwaitTermination() {
queueService.shutdown(); // Disable new tasks from being submitted
try {
// Wait a while for existing tasks to terminate
if (!queueService.awaitTermination(60, TimeUnit.SECONDS)) {
queueService.shutdownNow(); // Cancel currently executing tasks
// Wait a while for tasks to respond to being cancelled
if (!queueService.awaitTermination(60, TimeUnit.SECONDS))
System.err.println("Pool did not terminate");
}
} catch (InterruptedException ie) {
// (Re-)Cancel if current thread also interrupted
queueService.shutdownNow();
// Preserve interrupt status
Thread.currentThread().interrupt();
}
}
private static void processQueue() {
int currentIndex = DatabaseQueue.currentIndex.getAndSet(0);
if(currentIndex > 0) {
if (currentIndex > 0) {
Map<Query, PreparedStatement> preparedStatementMap = new EnumMap<>(Query.class);
Connection connection = Database.getConnection();
for(int i = 0; i < currentIndex; i++){
for (int i = 0; i < currentIndex; i++) {
try {
QueryParameters parameters = queuedCalls.get(i);
@ -71,15 +89,15 @@ public final class DatabaseQueue {
preparedStatement.executeUpdate();
preparedStatement.clearParameters();
}
}catch (Exception ex){
} catch (Exception ex) {
ex.printStackTrace();
}
}
preparedStatementMap.values().forEach(preparedStatement -> {
try{
try {
preparedStatement.close();
}catch (Exception ex){
} catch (Exception ex) {
ex.printStackTrace();
}
});