Merge changes from topic 'packfile-offloading-stats'

* changes:
  PackWriter/Statistics: Report offloaded size
  CachedPackUriProvider: Add size to the pack information

org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/UploadPackTest.java

@@ -2077,7 +2077,7 @@ public class UploadPackTest {
 						assertThat(protocolsSupported, hasItems("https"));
 						if (!protocolsSupported.contains("https"))
 							return null;
-						return new PackInfo("myhash", "myuri");
+						return new PackInfo("myhash", "myuri", 100);
 					}
 
 				});

org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/pack/CachedPackUriProvider.java

@@ -76,14 +76,22 @@ public interface CachedPackUriProvider {
 		private final String hash;
 		private final String uri;
 
+		private final int size;
+
 		/**
 		 * Constructs an object containing information about a packfile.
-		 * @param hash the hash of the packfile as a hexadecimal string
+		 *
-		 * @param uri the URI corresponding to the packfile
+		 * @param hash
+		 *            the hash of the packfile as a hexadecimal string
+		 * @param uri
+		 *            the URI corresponding to the packfile
+		 * @param size
+		 *            the size of the packfile in bytes
 		 */
-		public PackInfo(String hash, String uri) {
+		public PackInfo(String hash, String uri, int size) {
 			this.hash = hash;
 			this.uri = uri;
+			this.size = size;
 		}
 
 		/**
@@ -99,5 +107,12 @@ public interface CachedPackUriProvider {
 		public String getUri() {
 			return uri;
 		}
+
+		/**
+		 * @return the size of the packfile in bytes (-1 if unknown)
+		 */
+		public long getSize() {
+			return size;
+		}
 	}
 }

org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/pack/PackWriter.java

@@ -1230,6 +1230,8 @@ public class PackWriter implements AutoCloseable {
 					if (packInfo != null) {
 						o.writeString(packInfo.getHash() + ' ' +
 								packInfo.getUri() + '\n');
+						stats.offloadedPackfiles += 1;
+						stats.offloadedPackfileSize += packInfo.getSize();
 					} else {
 						unwrittenCachedPacks.add(pack);
 					}

org.eclipse.jgit/src/org/eclipse/jgit/storage/pack/PackStatistics.java

@@ -270,6 +270,20 @@ public class PackStatistics {
 		 * @since 5.4*/
 		public long treesTraversed;
 
+		/**
+		 * Amount of packfile uris sent to the client to download via HTTP.
+		 *
+		 * @since 5.6
+		 */
+		public long offloadedPackfiles;
+
+		/**
+		 * Total size (in bytes) offloaded to HTTP downloads.
+		 *
+		 * @since 5.6
+		 */
+		public long offloadedPackfileSize;
+
 		/**
 		 * Statistics about each object type in the pack (commits, tags, trees
 		 * and blobs.)
@@ -597,6 +611,22 @@ public class PackStatistics {
 		return statistics.treesTraversed;
 	}
 
+	/**
+	 * @return amount of packfiles offloaded (sent as "packfile-uri")/
+	 * @since 5.6
+	 */
+	public long getOffloadedPackfiles() {
+		return statistics.offloadedPackfiles;
+	}
+
+	/**
+	 * @return total size (in bytes) offloaded to HTTP downloads.
+	 * @since 5.6
+	 */
+	public long getOffloadedPackfilesSize() {
+		return statistics.offloadedPackfileSize;
+	}
+
 	/**
 	 * Get total time spent processing this pack.
 	 *