[PATCH 8 of 8] clonebundles: remove advertisement of feature

[timeless]

# HG changeset patch
# User Gregory Szorc <gregory.szorc at gmail.com>
# Date 1452279187 28800
#      Fri Jan 08 10:53:07 2016 -0800
# Node ID 31332c052812a31dd043ff784edc7ae36617e723
# Parent  31f80b5ac39a73e760b22a4a1c97352f4d494d82
clonebundles: remove advertisement of feature

I screwed up.

When clone bundles is enabled on the server and a compatible client
without the feature enabled clones, the server sends down an
advertisement saying to enable the feature. The server creates the
message which is printed verbatim on the client as an "output" part.
There are 2 problems:

1) The message doesn't respect the client's localization
2) The message contains a reference to the "experimental.clonebundles"
   option.

Since clone bundles is about to be marked as non-experimental and the
goal of the advertisement was to encourage clients to test the
experimental feature, let's just remove the broken advertisement since
it no longer serves a purpose.

diff --git a/hgext/clonebundles.py b/hgext/clonebundles.py
--- a/hgext/clonebundles.py
+++ b/hgext/clonebundles.py
@@ -164,15 +164,6 @@
 The following config options influence the behavior of the clone bundles
 feature:
 
-ui.clonebundleadvertise
-   Whether the server advertises the existence of the clone bundles feature
-   to compatible clients that aren't using it.
-
-   When this is enabled (the default), a server will send a message to
-   compatible clients performing a traditional clone informing them of the
-   available clone bundles feature. Compatible clients are those that support
-   bundle2 and are advertising support for the clone bundles feature.
-
 ui.clonebundlefallback
    Whether to automatically fall back to a traditional clone in case of
    clone bundles failure. Defaults to false for reasons described above.
@@ -190,10 +181,7 @@
    available bundle will be downloaded.
 """
 
-from mercurial.i18n import _
-from mercurial.node import nullid
 from mercurial import (
-    exchange,
     extensions,
     wireproto,
 )
@@ -211,44 +199,5 @@
 
     return caps
 
- at exchange.getbundle2partsgenerator('clonebundlesadvertise', 0)
-def advertiseclonebundlespart(bundler, repo, source, bundlecaps=None,
-                              b2caps=None, heads=None, common=None,
-                              cbattempted=None, **kwargs):
-    """Inserts an output part to advertise clone bundles availability."""
-    # Allow server operators to disable this behavior.
-    # # experimental config: ui.clonebundleadvertise
-    if not repo.ui.configbool('ui', 'clonebundleadvertise', True):
-        return
-
-    # Only advertise if a manifest is present.
-    if not repo.opener.exists('clonebundles.manifest'):
-        return
-
-    # And when changegroup data is requested.
-    if not kwargs.get('cg', True):
-        return
-
-    # And when the client supports clone bundles.
-    if cbattempted is None:
-        return
-
-    # And when the client didn't attempt a clone bundle as part of this pull.
-    if cbattempted:
-        return
-
-    # And when a full clone is requested.
-    # Note: client should not send "cbattempted" for regular pulls. This check
-    # is defense in depth.
-    if common and common != [nullid]:
-        return
-
-    msg = _('this server supports the experimental "clone bundles" feature '
-            'that should enable faster and more reliable cloning\n'
-            'help test it by setting the "experimental.clonebundles" config '
-            'flag to "true"')
-
-    bundler.newpart('output', data=msg)
-
 def extsetup(ui):
     extensions.wrapfunction(wireproto, '_capabilities', capabilities)
diff --git a/tests/test-clonebundles.t b/tests/test-clonebundles.t
--- a/tests/test-clonebundles.t
+++ b/tests/test-clonebundles.t
@@ -68,17 +68,6 @@
   adding file changes
   added 2 changesets with 2 changes to 2 files
 
-Server advertises presence of feature to client requesting full clone
-
-  $ hg --config experimental.clonebundles=false clone -U http://localhost:$HGPORT advertise-on-clone
-  requesting all changes
-  remote: this server supports the experimental "clone bundles" feature that should enable faster and more reliable cloning
-  remote: help test it by setting the "experimental.clonebundles" config flag to "true"
-  adding changesets
-  adding manifests
-  adding file changes
-  added 2 changesets with 2 changes to 2 files
-
 Manifest file with invalid URL aborts
 
   $ echo 'http://does.not.exist/bundle.hg' > server/.hg/clonebundles.manifest