As part of reducing the number of changegroup creation APIs, let's replace
getchangegroup with calls to makechangegroup. This is mostly a drop in
replacement, but it does change the version specifier to be required, so it's
more obvious which callers are creating old version 1 changegroups still.
Differential Revision: https://phab.mercurial-scm.org/D669
This avoids some false positives in an upcoming check-code rule.
Reviewers: krbullock
Reviewed By: krbullock
Differential Revision: https://phab.mercurial-scm.org/D3
There is various version of this function that differ mostly by the way they
define the bundled set. The flexibility is now available in the outgoing object
itself so we move the complexity into the caller themself. This will allow use
to remove a good share of the similar function to obtains a changegroup in the
'changegroup.py' module.
An important side effect is that we stop calling 'computeoutgoing' in
'getchangegroup'. This is fine as code that needs such argument processing
is actually going through the 'exchange' module which already all this function
itself.
Bundle 2 is enable by default since 3.6 so we don't need this anymore.
The remaining use of 'experimental.bundle2-exp' are there to test legacy behavior
with bundle 1. Future patches will introduce a way outside of experimental to
test that.
This is a backout of 93589179c542, and a partial backout of 9b1628b91e74.
Windows won't execute 'dummyssh' directly, presumably because CreateProcess()
doesn't know how to execute a bash script:
$ hg clone -e "dummyssh" ssh://user@dummy/cloned sshclone
remote: 'dummyssh' is not recognized as an internal or external command,
remote: operable program or batch file.
abort: no suitable response from remote hg!
[255]
With the restoration of python as the executable, $TESTDIR needs to be restored
for these invocations, because python won't search $PATH for 'dummyssh':
$ hg clone -e "python dummyssh" ssh://user@dummy/cloned sshclone
remote: python: can't open file 'dummyssh': [Errno 2] No such file or directory
abort: no suitable response from remote hg!
[255]
$TESTDIR is added to the path, so this is superfluous. Also,
inconsistent use of quotes means we might have broken on tests with
paths containing spaces.
It is finally time to freeze the bundle2 format! To do so we:
- rename HG2Y to HG20,
- drop "b2x:" prefix from all part names,
- rename capability to "bundle2-exp" to "bundle2"
- rename the hook flag from 'bundle2-exp' to 'bundle2'
Bundle2 opens doors to advanced features allowing to reduce load on
mercurial servers, and improve clone experience for users on unstable or
slow networks.
For instance, it could be possible to pre-generate a bundle of a
repository, and give a pointer to it to clients cloning the repository,
followed by another changegroup with the remainder. For significantly
big repositories, this could come as several base bundles with e.g. 10k
changesets, which, combined with checkpoints (not part of this change),
would prevent users with flaky networks from starting over any time
their connection fails.
While the server-side support for those features doesn't exist yet, it
is preferable to have client-side support for this early-on, allowing
experiments on servers only requiring a vanilla client with bundle2
enabled.
