com.google.gerrit.server.git

Class HackPushNegotiateHook

java.lang.Object

com.google.gerrit.server.git.HackPushNegotiateHook

All Implemented Interfaces:

org.eclipse.jgit.transport.AdvertiseRefsHook

public class HackPushNegotiateHook
extends Object
implements org.eclipse.jgit.transport.AdvertiseRefsHook

Advertises part of history to git push clients.

This is a hack to work around the lack of negotiation in the send-pack/receive-pack wire protocol.

When the server is frequently advancing master by creating merge commits, the client may not be able to discover a common ancestor during push. Attempting to push will re-upload a very large amount of history. This hook hacks in a fake negotiation replacement by walking history and sending recent commits as ".have" lines in the wire protocol, allowing the client to find a common ancestor.

Field Summary

Fields inherited from interface org.eclipse.jgit.transport.AdvertiseRefsHook

DEFAULT

Constructor Summary

Constructors

Constructor and Description
HackPushNegotiateHook()

Method Summary

Modifier and Type	Method and Description
void	advertiseRefs(org.eclipse.jgit.transport.BaseReceivePack rp)
void	advertiseRefs(org.eclipse.jgit.transport.UploadPack us)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

HackPushNegotiateHook

public HackPushNegotiateHook()

Method Detail

advertiseRefs

public void advertiseRefs(org.eclipse.jgit.transport.UploadPack us)

Specified by:

advertiseRefs in interface org.eclipse.jgit.transport.AdvertiseRefsHook

advertiseRefs

public void advertiseRefs(org.eclipse.jgit.transport.BaseReceivePack rp)
                   throws org.eclipse.jgit.transport.ServiceMayNotContinueException

Specified by:

advertiseRefs in interface org.eclipse.jgit.transport.AdvertiseRefsHook

Throws:

org.eclipse.jgit.transport.ServiceMayNotContinueException