cache client: download indexes even if revision is up to date

Also add DownloadWatcher to watch download progress

cache/src/main/java/net/runelite/cache/client/CacheClient.java

@@ -68,6 +68,7 @@ public class CacheClient implements AutoCloseable
 	private final Store store; // store cache will be written to
 	private final String host;
 	private final int clientRevision;
+	private DownloadWatcher watcher;
 
 	private ClientState state;
 
@@ -89,6 +90,12 @@ public class CacheClient implements AutoCloseable
 		this.clientRevision = clientRevision;
 	}
 
+	public CacheClient(Store store, int clientRevision, DownloadWatcher watcher)
+	{
+		this(store, clientRevision);
+		this.watcher = watcher;
+	}
+
 	public void connect()
 	{
 		Bootstrap b = new Bootstrap();
@@ -226,8 +233,9 @@ public class CacheClient implements AutoCloseable
 			}
 			else
 			{
+				// despite the index being up to date, not everything
+				// can be downloaded, eg. for tracks.
 				logger.info("Index {} is up to date", index.getId());
-				continue;
 			}
 
 			logger.info("Downloading index {}", i);
@@ -250,11 +258,10 @@ public class CacheClient implements AutoCloseable
 			{
 				index = store.addIndex(i);
 			}
-			else
+
-			{
+			// update index crc and revision
-				// update index crc
 			index.setCrc(crc);
-			}
+			index.setRevision(revision);
 
 			logger.info("Index {} has {} archives", i, index.getArchives().size());
 
@@ -262,8 +269,13 @@ public class CacheClient implements AutoCloseable
 			{
 				Archive existing = index.getArchive(ad.getId());
 
-				if (existing == null || existing.getRevision() != ad.getRevision())
+				if (existing != null && existing.getRevision() == ad.getRevision())
 				{
+					logger.info("Archive {}/{} in index {} is up to date",
+						ad.getId(), indexData.getArchives().length, index.getId());
+					continue;
+				}
+
 				if (existing == null)
 				{
 					logger.info("Archive {}/{} in index {} is out of date, downloading",
@@ -286,8 +298,12 @@ public class CacheClient implements AutoCloseable
 					? index.addArchive(ad.getId())
 					: existing;
 
+				archive.setRevision(ad.getRevision());
+				archive.setCrc(ad.getCrc());
+				archive.setNameHash(ad.getNameHash());
+
 				// Add files
-					archive.getFiles().clear();
+				archive.clearFiles();
 				for (FileData fd : ad.getFiles())
 				{
 					FSFile file = archive.addFile(fd.getId());
@@ -298,15 +314,14 @@ public class CacheClient implements AutoCloseable
 				future.handle((fr, ex) ->
 				{
 					archive.setData(fr.getCompressedData());
+
+					if (watcher != null)
+					{
+						watcher.downloadComplete(archive);
+					}
 					return null;
 				});
 			}
-				else
-				{
-					logger.info("Active {}/{} in index {} is up to date",
-						ad.getId(), indexData.getArchives().length, index.getId());
-				}
-			}
 		}
 
 		// flush any pending requests

cache/src/main/java/net/runelite/cache/client/DownloadWatcher.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2016-2017, Adam <Adam@sigterm.info>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package net.runelite.cache.client;
+
+import net.runelite.cache.fs.Archive;
+
+@FunctionalInterface
+public interface DownloadWatcher
+{
+	void downloadComplete(Archive archive);
+}