X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsonitus%2Fdata%2FPipeline.java;h=75536fc732de25979706a27a1a3a4d9222852fe4;hb=07121c8fc483608738841207a92bdcc130ef0587;hp=ee67eec2f1fd89da67853fb1727b5bfb7ba64f7c;hpb=fa5196e029c48636f0c318311244395cfae49953;p=sonitus.git

diff --git a/src/main/java/net/pterodactylus/sonitus/data/Pipeline.java b/src/main/java/net/pterodactylus/sonitus/data/Pipeline.java
index ee67eec..75536fc 100644
--- a/src/main/java/net/pterodactylus/sonitus/data/Pipeline.java
+++ b/src/main/java/net/pterodactylus/sonitus/data/Pipeline.java
@@ -34,8 +34,8 @@ import com.google.common.base.Optional;
 import com.google.common.base.Preconditions;
 import com.google.common.collect.ArrayListMultimap;
 import com.google.common.collect.FluentIterable;
+import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMultimap;
-import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Multimap;
 import com.google.common.util.concurrent.MoreExecutors;
@@ -71,6 +71,21 @@ public class Pipeline implements Iterable<ControlledComponent> {
 	private Pipeline(Source source, Multimap<Source, Sink> sinks) {
 		this.source = Preconditions.checkNotNull(source, "source must not be null");
 		this.sinks = Preconditions.checkNotNull(sinks, "sinks must not be null");
+		for (ControlledComponent component : Lists.reverse(components())) {
+			logger.finest(String.format("Adding Listener to %s.", component));
+			component.addMetadataListener(new MetadataListener() {
+				@Override
+				public void metadataUpdated(ControlledComponent component, Metadata metadata) {
+					if (!(component instanceof Source)) {
+						return;
+					}
+					for (ControlledComponent controlledComponent : sinks((Source) component)) {
+						logger.fine(String.format("Updating Metadata from %s to %s.", component, controlledComponent));
+						controlledComponent.metadataUpdated(metadata);
+					}
+				}
+			});
+		}
 	}
 
 	//
@@ -172,7 +187,34 @@ public class Pipeline implements Iterable<ControlledComponent> {
 
 	@Override
 	public Iterator<ControlledComponent> iterator() {
-		return ImmutableSet.<ControlledComponent>builder().add(source).addAll(sinks.values()).build().iterator();
+		return components().iterator();
+	}
+
+	//
+	// PRIVATE METHODS
+	//
+
+	/**
+	 * Returns all components of this pipeline, listed breadth-first, starting with
+	 * the source.
+	 *
+	 * @return All components of this pipeline
+	 */
+	public List<ControlledComponent> components() {
+		ImmutableList.Builder<ControlledComponent> components = ImmutableList.builder();
+		List<ControlledComponent> currentComponents = Lists.newArrayList();
+		components.add(source);
+		currentComponents.add(source);
+		while (!currentComponents.isEmpty()) {
+			Collection<Sink> sinks = this.sinks((Source) currentComponents.remove(0));
+			for (Sink sink : sinks) {
+				components.add(sink);
+				if (sink instanceof Source) {
+					currentComponents.add(sink);
+				}
+			}
+		}
+		return components.build();
 	}
 
 	//
@@ -335,8 +377,6 @@ public class Pipeline implements Iterable<ControlledComponent> {
 			Metadata firstMetadata = null;
 			while (!stopped.get()) {
 				try {
-					final Metadata lastMetadata = firstMetadata;
-					final Metadata metadata = firstMetadata = source.metadata();
 					final byte[] buffer;
 					try {
 						logger.finest(String.format("Getting %d bytes from %s...", 4096, source));
@@ -353,9 +393,6 @@ public class Pipeline implements Iterable<ControlledComponent> {
 
 								@Override
 								public Void call() throws Exception {
-									if (!metadata.equals(lastMetadata)) {
-										sink.metadataUpdated(metadata);
-									}
 									try {
 										logger.finest(String.format("Sending %d bytes to %s.", buffer.length, sink));
 										sink.process(buffer);