UploadPack: Use request instead of field for client capabilities

Change-Id: Idc21e2b3fd145d2a4b15c1cea5ec1956541e3b40
Signed-off-by: Ivan Frade <ifrade@google.com>

org.eclipse.jgit/src/org/eclipse/jgit/transport/UploadPack.java

@@ -286,8 +286,7 @@ public class UploadPack {
 	/** Hook for taking post upload actions. */
 	private PostUploadHook postUploadHook = PostUploadHook.NULL;
 
-	/** Capabilities requested by the client. */
-	private Set<String> options;
+	/** Caller user agent */
 	String userAgent;
 
 	/** Raw ObjectIds the client has asked for, before validating them. */
@@ -681,10 +680,12 @@ public class UploadPack {
 	 *             read.
 	 */
 	public boolean isSideBand() throws RequestNotYetReadException {
-		if (options == null)
+		if (currentRequest == null) {
 			throw new RequestNotYetReadException();
-		return (options.contains(OPTION_SIDE_BAND)
-				|| options.contains(OPTION_SIDE_BAND_64K));
+		}
+		Set<String> caps = currentRequest.getClientCapabilities();
+		return caps.contains(OPTION_SIDE_BAND)
+				|| caps.contains(OPTION_SIDE_BAND_64K);
 	}
 
 	/**
@@ -815,7 +816,6 @@ public class UploadPack {
 			currentRequest = req;
 
 			wantIds = req.getWantIds();
-			options = req.getClientCapabilities();
 
 			if (req.getWantIds().isEmpty()) {
 				preUploadHook.onBeginNegotiateRound(this, req.getWantIds(), 0);
@@ -956,7 +956,6 @@ public class UploadPack {
 
 		// TODO(ifrade): Refactor to pass around the Request object, instead of
 		// copying data back to class fields
-		options = req.getClientCapabilities();
 		wantIds = req.getWantIds();
 
 		boolean sectionSent = false;
@@ -1368,7 +1367,12 @@ public class UploadPack {
 	 * @since 4.0
 	 */
 	public String getPeerUserAgent() {
-		return UserAgent.getAgent(options, userAgent);
+		if (currentRequest == null) {
+			return userAgent;
+		}
+
+		return UserAgent.getAgent(currentRequest.getClientCapabilities(),
+				userAgent);
 	}
 
 	private boolean negotiate(FetchRequest req,
@@ -1784,8 +1788,9 @@ public class UploadPack {
 			FetchRequest req,
 			@Nullable Collection<Ref> allTags,
 			List<ObjectId> unshallowCommits) throws IOException {
-		final boolean sideband = options.contains(OPTION_SIDE_BAND)
-				|| options.contains(OPTION_SIDE_BAND_64K);
+		Set<String> caps = req.getClientCapabilities();
+		boolean sideband = caps.contains(OPTION_SIDE_BAND)
+				|| caps.contains(OPTION_SIDE_BAND_64K);
 		if (sideband) {
 			try {
 				sendPack(true, req, accumulator, allTags, unshallowCommits);
@@ -1857,12 +1862,12 @@ public class UploadPack {
 
 		if (sideband) {
 			int bufsz = SideBandOutputStream.SMALL_BUF;
-			if (options.contains(OPTION_SIDE_BAND_64K))
+			if (req.getClientCapabilities().contains(OPTION_SIDE_BAND_64K))
 				bufsz = SideBandOutputStream.MAX_BUF;
 
 			packOut = new SideBandOutputStream(SideBandOutputStream.CH_DATA,
 					bufsz, rawOut);
-			if (!options.contains(OPTION_NO_PROGRESS)) {
+			if (!req.getClientCapabilities().contains(OPTION_NO_PROGRESS)) {
 				msgOut = new SideBandOutputStream(
 						SideBandOutputStream.CH_PROGRESS, bufsz, rawOut);
 				pm = new SideBandProgressMonitor(msgOut);
@@ -1909,8 +1914,9 @@ public class UploadPack {
 							&& req.getClientShallowCommits().isEmpty());
 			pw.setClientShallowCommits(req.getClientShallowCommits());
 			pw.setReuseDeltaCommits(true);
-			pw.setDeltaBaseAsOffset(options.contains(OPTION_OFS_DELTA));
-			pw.setThin(options.contains(OPTION_THIN_PACK));
+			pw.setDeltaBaseAsOffset(
+					req.getClientCapabilities().contains(OPTION_OFS_DELTA));
+			pw.setThin(req.getClientCapabilities().contains(OPTION_THIN_PACK));
 			pw.setReuseValidatingObjects(false);
 
 			// Objects named directly by references go at the beginning
@@ -1949,7 +1955,8 @@ public class UploadPack {
 				rw = ow;
 			}
 
-			if (options.contains(OPTION_INCLUDE_TAG) && allTags != null) {
+			if (req.getClientCapabilities().contains(OPTION_INCLUDE_TAG)
+					&& allTags != null) {
 				for (Ref ref : allTags) {
 					ObjectId objectId = ref.getObjectId();
 					if (objectId == null) {