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bundle2: specify what capabilities will be used for We currently assume there is a symmetric relationship of bundle2 capabilities between client and server. However, this may not always be the case. We need a bundle2 capability to advertise bundle2 streaming clone support on servers to differentiate it from the existing, legacy streaming clone support. However, servers may wish to disable streaming clone support. If bundle2 capabilities were the same between client and server, a client (which may also be a server) that has disabled streaming clone support would not be able to perform a streaming clone itself! This commit introduces a "role" argument to bundle2.getrepocaps() that explicitly defines the role being performed. This will allow us (and extensions) to alter bundle2 capabilities depending on the operation being performed. Differential Revision: https://phab.mercurial-scm.org/D1923
author Gregory Szorc <gregory.szorc@gmail.com>
date Sat, 20 Jan 2018 13:54:36 -0800
parents 7eedbd5d4880
children a84dbc87dae9
comparison
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35782:9d249f3de730 35783:c97639ad6874
1488 'hgtagsfnodes': (), 1488 'hgtagsfnodes': (),
1489 'phases': ('heads',), 1489 'phases': ('heads',),
1490 'stream': ('v2',), 1490 'stream': ('v2',),
1491 } 1491 }
1492 1492
1493 def getrepocaps(repo, allowpushback=False): 1493 def getrepocaps(repo, allowpushback=False, role=None):
1494 """return the bundle2 capabilities for a given repo 1494 """return the bundle2 capabilities for a given repo
1495 1495
1496 Exists to allow extensions (like evolution) to mutate the capabilities. 1496 Exists to allow extensions (like evolution) to mutate the capabilities.
1497
1498 The returned value is used for servers advertising their capabilities as
1499 well as clients advertising their capabilities to servers as part of
1500 bundle2 requests. The ``role`` argument specifies which is which.
1497 """ 1501 """
1502 if role not in ('client', 'server'):
1503 raise error.ProgrammingError('role argument must be client or server')
1504
1498 caps = capabilities.copy() 1505 caps = capabilities.copy()
1499 caps['changegroup'] = tuple(sorted( 1506 caps['changegroup'] = tuple(sorted(
1500 changegroup.supportedincomingversions(repo))) 1507 changegroup.supportedincomingversions(repo)))
1501 if obsolete.isenabled(repo, obsolete.exchangeopt): 1508 if obsolete.isenabled(repo, obsolete.exchangeopt):
1502 supportedformat = tuple('V%i' % v for v in obsolete.formats) 1509 supportedformat = tuple('V%i' % v for v in obsolete.formats)