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update database asynchronously

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Athou
2013-05-22 21:57:53 +02:00
parent 58501bbfb1
commit f20a772603
1 changed files with 48 additions and 9 deletions
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39
src/main/java/com/commafeed/backend/feeds/FeedRefreshUpdater.java
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@@ -2,7 +2,11 @@ package com.commafeed.backend.feeds;
import java.util.Collection; import java.util.Collection;
import java.util.List; import java.util.List;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import javax.annotation.PostConstruct;
import javax.inject.Inject; import javax.inject.Inject;
import javax.inject.Singleton; import javax.inject.Singleton;
@@ -12,6 +16,7 @@ import org.slf4j.LoggerFactory;
import com.commafeed.backend.LockMap; import com.commafeed.backend.LockMap;
import com.commafeed.backend.dao.FeedDAO; import com.commafeed.backend.dao.FeedDAO;
import com.commafeed.backend.dao.FeedSubscriptionDAO; import com.commafeed.backend.dao.FeedSubscriptionDAO;
import com.commafeed.backend.model.ApplicationSettings;
import com.commafeed.backend.model.Feed; import com.commafeed.backend.model.Feed;
import com.commafeed.backend.model.FeedEntry; import com.commafeed.backend.model.FeedEntry;
import com.commafeed.backend.model.FeedPushInfo; import com.commafeed.backend.model.FeedPushInfo;
@@ -46,7 +51,39 @@ public class FeedRefreshUpdater {
@Inject @Inject
FeedSubscriptionDAO feedSubscriptionDAO; FeedSubscriptionDAO feedSubscriptionDAO;
private ThreadPoolExecutor pool;
@PostConstruct
public void init() {
ApplicationSettings settings = applicationSettingsService.get();
int threads = Math.max(settings.getBackgroundThreads(), 1);
pool = new ThreadPoolExecutor(threads, threads, 0,
TimeUnit.MILLISECONDS, new LinkedBlockingQueue<Runnable>());
pool.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy() {
@Override
public void rejectedExecution(Runnable r, ThreadPoolExecutor e) {
super.rejectedExecution(r, e);
log.info("Thread queue full, executing in own thread.");
}
});
}
public void updateFeed(Feed feed, Collection<FeedEntry> entries) { public void updateFeed(Feed feed, Collection<FeedEntry> entries) {
pool.execute(new Task(feed, entries));
}
private class Task implements Runnable {
private Feed feed;
private Collection<FeedEntry> entries;
public Task(Feed feed, Collection<FeedEntry> entries) {
this.feed = feed;
this.entries = entries;
}
@Override
public void run() {
if (entries != null) { if (entries != null) {
List<FeedSubscription> subscriptions = feedSubscriptionDAO List<FeedSubscription> subscriptions = feedSubscriptionDAO
.findByFeed(feed); .findByFeed(feed);
@@ -61,6 +98,8 @@ public class FeedRefreshUpdater {
taskGiver.giveBack(feed); taskGiver.giveBack(feed);
} }
}
private void updateEntry(Feed feed, FeedEntry entry, private void updateEntry(Feed feed, FeedEntry entry,
List<FeedSubscription> subscriptions) { List<FeedSubscription> subscriptions) {
synchronized (lockMap.get(entry.getGuid())) { synchronized (lockMap.get(entry.getGuid())) {