import java.io.IOException;
import java.util.concurrent.atomic.AtomicLong;
+import java.util.concurrent.atomic.AtomicReference;
import net.pterodactylus.sonitus.data.Filter;
import net.pterodactylus.sonitus.data.Metadata;
-import com.google.common.eventbus.EventBus;
-
/**
* {@link Filter} implementation that uses the number of bytes that have been
* {@link #process(byte[]) processed} together with the {@link Metadata} to
*
* @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
*/
-public class TimeCounterFilter extends DummyFilter {
+public class TimeCounterFilter extends BasicFilter {
/** The byte counter. */
private final AtomicLong counter = new AtomicLong();
+ /** The parent’s metdata. */
+ private final AtomicReference<Metadata> parentMetadata = new AtomicReference<Metadata>();
+
/** Whether to reset the counter on a metadata update. */
private final boolean resetOnMetadataUpdate;
+ /** The last displayed timestamp. */
+ private final AtomicLong lastTimestamp = new AtomicLong(-1);
+
/**
* Creates a new time counter filter that automatically resets the counter when
* the metadata is {@link #metadataUpdated(Metadata) updated}.
*
- * @param eventBus
- * The event bus
* @param name
* The name of the filter
*/
- public TimeCounterFilter(EventBus eventBus, String name) {
- this(eventBus, name, true);
+ public TimeCounterFilter(String name) {
+ this(name, true);
}
/**
* Creates a new time counter filter.
*
- * @param eventBus
- * The event bus
* @param name
* The name of the filter
* @param resetOnMetadataUpdate
* {@code true} if the counter should automatically be reset if the metadata
* is updated, {@code false} otherwise
*/
- public TimeCounterFilter(EventBus eventBus, String name, boolean resetOnMetadataUpdate) {
- super(eventBus, name);
+ public TimeCounterFilter(String name, boolean resetOnMetadataUpdate) {
+ super(name);
this.resetOnMetadataUpdate = resetOnMetadataUpdate;
}
}
//
- // DUMMYFILTER METHODS
+ // BASICFILTER METHODS
//
@Override
public void metadataUpdated(Metadata metadata) {
- super.metadataUpdated(metadata);
+ parentMetadata.set(metadata);
if (resetOnMetadataUpdate) {
reset();
}
+ updateTimestamp(true);
}
@Override
public void process(byte[] buffer) throws IOException {
super.process(buffer);
counter.getAndAdd(buffer.length);
+ updateTimestamp(false);
+ }
+
+ //
+ // PRIVATE METHODS
+ //
+
+ /** Updates the timestamp in the metadata. */
+ private void updateTimestamp(boolean now) {
+ long timestamp = getMillis() / 1000;
+ if (now || (lastTimestamp.get() != timestamp)) {
+ super.metadataUpdated(parentMetadata.get().comment(String.format("%02d:%02d", timestamp / 60, timestamp % 60)));
+ lastTimestamp.set(timestamp);
+ }
}
}