view contrib/check-pytype.sh @ 50316:87f0155d68aa stable

revlog: improve the robustness of the splitting process

The previous "in-place" splitting, preserving the splitting on transaction
failure had a couple of issue in case of transaction rollback:
- a race windows that could still lead to a crash and data loss
- it corrupted the `fncache`.

So instead, we use a new approach that we summarized as "we do a backup of the
inline revlog pre-split, and we restore this in case of failure".
To make readers live easier, we don't overwrite the inline index file until
transaction finalization. (once the transaction get into its finalization phase,
it is not expected to rollback, unless some crash happens).

To do so, we write the index of the split index in a temporary file that we use
until transaction finalization. We also keep a backup of the initial inline file
to be able to rollback the split if needed.

As a result, transaction rollback cancel the split and no longer corrupt
fncache. We also no longer have a small inconsistency windows where the
transaction could be unrecoverable.

#!/bin/sh

set -e
set -u

cd `hg root`

# Many of the individual files that are excluded here confuse pytype
# because they do a mix of Python 2 and Python 3 things
# conditionally. There's no good way to help it out with that as far as
# I can tell, so let's just hide those files from it for now. We should
# endeavor to empty this list out over time, as some of these are
# probably hiding real problems.
#
# hgext/absorb.py               # [attribute-error]
# hgext/bugzilla.py             # [pyi-error], [attribute-error]
# hgext/convert/bzr.py          # [attribute-error]
# hgext/convert/cvs.py          # [attribute-error], [wrong-arg-types]
# hgext/convert/cvsps.py        # [attribute-error]
# hgext/convert/p4.py           # [wrong-arg-types] (__file: mercurial.utils.procutil._pfile -> IO)
# hgext/convert/subversion.py   # [attribute-error], [name-error], [pyi-error]
# hgext/fastannotate/context.py # no linelog.copyfrom()
# hgext/fastannotate/formatter.py  # [unsupported-operands]
# hgext/fsmonitor/__init__.py   # [name-error]
# hgext/git/__init__.py         # [attribute-error]
# hgext/githelp.py              # [attribute-error] [wrong-arg-types]
# hgext/hgk.py                  # [attribute-error]
# hgext/histedit.py             # [attribute-error], [wrong-arg-types]
# hgext/infinitepush            # using bytes for str literal; scheduled for removal
# hgext/keyword.py              # [attribute-error]
# hgext/largefiles/storefactory.py  # [attribute-error]
# hgext/lfs/__init__.py         # [attribute-error]
# hgext/narrow/narrowbundle2.py # [attribute-error]
# hgext/narrow/narrowcommands.py    # [attribute-error], [name-error]
# hgext/rebase.py               # [attribute-error]
# hgext/remotefilelog/basepack.py   # [attribute-error], [wrong-arg-count]
# hgext/remotefilelog/basestore.py  # [attribute-error]
# hgext/remotefilelog/contentstore.py   # [missing-parameter], [wrong-keyword-args], [attribute-error]
# hgext/remotefilelog/fileserverclient.py  # [attribute-error]
# hgext/remotefilelog/shallowbundle.py     # [attribute-error]
# hgext/remotefilelog/remotefilectx.py  # [module-attr] (This is an actual bug)
# hgext/sqlitestore.py          # [attribute-error]
# hgext/zeroconf/__init__.py    # bytes vs str; tests fail on macOS
#
# mercurial/bundlerepo.py       # no vfs and ui attrs on bundlerepo
# mercurial/context.py          # many [attribute-error]
# mercurial/crecord.py          # tons of [attribute-error], [module-attr]
# mercurial/debugcommands.py    # [wrong-arg-types]
# mercurial/dispatch.py         # initstdio: No attribute ... on TextIO [attribute-error]
# mercurial/exchange.py         # [attribute-error]
# mercurial/hgweb/hgweb_mod.py  # [attribute-error], [name-error], [wrong-arg-types]
# mercurial/hgweb/server.py     # [attribute-error], [name-error], [module-attr]
# mercurial/hgweb/wsgicgi.py    # confused values in os.environ
# mercurial/httppeer.py         # [attribute-error], [wrong-arg-types]
# mercurial/interfaces          # No attribute 'capabilities' on peer [attribute-error]
# mercurial/keepalive.py        # [attribute-error]
# mercurial/localrepo.py        # [attribute-error]
# mercurial/manifest.py         # [unsupported-operands], [wrong-arg-types]
# mercurial/minirst.py          # [unsupported-operands], [attribute-error]
# mercurial/pure/osutil.py      # [invalid-typevar], [not-callable]
# mercurial/pure/parsers.py     # [attribute-error]
# mercurial/repoview.py         # [attribute-error]
# mercurial/testing/storage.py  # tons of [attribute-error]
# mercurial/unionrepo.py        # ui, svfs, unfiltered [attribute-error]
# mercurial/win32.py            # [not-callable]
# mercurial/wireprotoframing.py # [unsupported-operands], [attribute-error], [import-error]
# mercurial/wireprotov1peer.py  # [attribute-error]
# mercurial/wireprotov1server.py  # BUG?: BundleValueError handler accesses subclass's attrs

# TODO: use --no-cache on test server?  Caching the files locally helps during
#       development, but may be a hinderance for CI testing.

# TODO: include hgext and hgext3rd

pytype -V 3.7 --keep-going --jobs auto \
    doc/check-seclevel.py hgdemandimport hgext mercurial \
    -x hgext/absorb.py \
    -x hgext/bugzilla.py \
    -x hgext/convert/bzr.py \
    -x hgext/convert/cvs.py \
    -x hgext/convert/cvsps.py \
    -x hgext/convert/p4.py \
    -x hgext/convert/subversion.py \
    -x hgext/fastannotate/context.py \
    -x hgext/fastannotate/formatter.py \
    -x hgext/fsmonitor/__init__.py \
    -x hgext/git/__init__.py \
    -x hgext/githelp.py \
    -x hgext/hgk.py \
    -x hgext/histedit.py \
    -x hgext/infinitepush \
    -x hgext/keyword.py \
    -x hgext/largefiles/storefactory.py \
    -x hgext/lfs/__init__.py \
    -x hgext/narrow/narrowbundle2.py \
    -x hgext/narrow/narrowcommands.py \
    -x hgext/rebase.py \
    -x hgext/remotefilelog/basepack.py \
    -x hgext/remotefilelog/basestore.py \
    -x hgext/remotefilelog/contentstore.py \
    -x hgext/remotefilelog/fileserverclient.py \
    -x hgext/remotefilelog/remotefilectx.py \
    -x hgext/remotefilelog/shallowbundle.py \
    -x hgext/sqlitestore.py \
    -x hgext/zeroconf/__init__.py \
    -x mercurial/bundlerepo.py \
    -x mercurial/context.py \
    -x mercurial/crecord.py \
    -x mercurial/debugcommands.py \
    -x mercurial/dispatch.py \
    -x mercurial/exchange.py \
    -x mercurial/hgweb/hgweb_mod.py \
    -x mercurial/hgweb/server.py \
    -x mercurial/hgweb/wsgicgi.py \
    -x mercurial/httppeer.py \
    -x mercurial/interfaces \
    -x mercurial/keepalive.py \
    -x mercurial/localrepo.py \
    -x mercurial/manifest.py \
    -x mercurial/minirst.py \
    -x mercurial/pure/osutil.py \
    -x mercurial/pure/parsers.py \
    -x mercurial/repoview.py \
    -x mercurial/testing/storage.py \
    -x mercurial/thirdparty \
    -x mercurial/unionrepo.py \
    -x mercurial/win32.py \
    -x mercurial/wireprotoframing.py \
    -x mercurial/wireprotov1peer.py \
    -x mercurial/wireprotov1server.py

echo 'pytype crashed while generating the following type stubs:'
find .pytype/pyi -name '*.pyi' | xargs grep -l '# Caught error' | sort