Mercurial > hg
view tests/test-wireproto-command-changesetdata.t @ 42377:0546ead39a7e stable
manifest: avoid corruption by dropping removed files with pure (issue5801)
Previously, removed files would simply be marked by overwriting the first byte
with NUL and dropping their entry in `self.position`. But no effort was made to
ignore them when compacting the dictionary into text form. This allowed them to
slip into the manifest revision, since the code seems to be trying to minimize
the string operations by copying as large a chunk as possible. As part of this,
compact() walks the existing text based on entries in the `positions` list, and
consumed everything up to the next position entry. This typically resulted in
a ValueError complaining about unsorted manifest entries.
Sometimes it seems that files do get dropped in large repos- it seems to
correspond to there being a new entry that would take the same slot. A much
more trivial problem is that if the only changes were removals, `_compact()`
didn't even run because `__delitem__` doesn't add anything to `self.extradata`.
Now there's an explicit variable to flag this, both to allow `_compact()` to
run, and to avoid searching the manifest in cases where there are no removals.
In practice, this behavior was mostly obscured by the check in fastdelta() which
takes a different path that explicitly drops removed files if there are fewer
than 1000 changes. However, timeless has a repo where after rebasing tens of
commits, a totally different path[1] is taken that bypasses the change count
check and hits this problem.
[1] https://www.mercurial-scm.org/repo/hg/file/2338bdea4474/mercurial/manifest.py#l1511
author | Matt Harbison <matt_harbison@yahoo.com> |
---|---|
date | Thu, 23 May 2019 21:54:24 -0400 |
parents | 41263df08109 |
children | 95c4cca641f6 |
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$ . $TESTDIR/wireprotohelpers.sh $ hg init server $ enablehttpv2 server $ cd server $ cat >> .hg/hgrc << EOF > [phases] > publish = false > EOF $ echo a0 > a $ echo b0 > b $ hg -q commit -A -m 'commit 0' $ echo a1 > a $ echo b1 > b $ hg commit -m 'commit 1' $ echo b2 > b $ hg commit -m 'commit 2' $ hg phase --public -r . $ hg -q up -r 0 $ echo a2 > a $ hg commit -m 'commit 3' created new head $ hg log -G -T '{rev}:{node} {desc}\n' @ 3:eae5f82c2e622368d27daecb76b7e393d0f24211 commit 3 | | o 2:0bb8ad894a15b15380b2a2a5b183e20f2a4b28dd commit 2 | | | o 1:7592917e1c3e82677cb0a4bc715ca25dd12d28c1 commit 1 |/ o 0:3390ef850073fbc2f0dfff2244342c8e9229013a commit 0 $ hg serve -p $HGPORT -d --pid-file hg.pid -E error.log $ cat hg.pid > $DAEMON_PIDS No arguments is an invalid request $ sendhttpv2peer << EOF > command changesetdata > EOF creating http peer for wire protocol version 2 sending changesetdata command abort: missing required arguments: revisions! [255] Missing nodes for changesetexplicit results in error $ sendhttpv2peer << EOF > command changesetdata > revisions eval:[{b'type': b'changesetexplicit'}] > EOF creating http peer for wire protocol version 2 sending changesetdata command abort: nodes key not present in changesetexplicit revision specifier! [255] changesetexplicitdepth requires nodes and depth keys $ sendhttpv2peer << EOF > command changesetdata > revisions eval:[{b'type': b'changesetexplicitdepth'}] > EOF creating http peer for wire protocol version 2 sending changesetdata command abort: nodes key not present in changesetexplicitdepth revision specifier! [255] $ sendhttpv2peer << EOF > command changesetdata > revisions eval:[{b'type': b'changesetexplicitdepth', b'nodes': []}] > EOF creating http peer for wire protocol version 2 sending changesetdata command abort: depth key not present in changesetexplicitdepth revision specifier! [255] $ sendhttpv2peer << EOF > command changesetdata > revisions eval:[{b'type': b'changesetexplicitdepth', b'depth': 42}] > EOF creating http peer for wire protocol version 2 sending changesetdata command abort: nodes key not present in changesetexplicitdepth revision specifier! [255] changesetdagrange requires roots and heads keys $ sendhttpv2peer << EOF > command changesetdata > revisions eval:[{b'type': b'changesetdagrange'}] > EOF creating http peer for wire protocol version 2 sending changesetdata command abort: roots key not present in changesetdagrange revision specifier! [255] $ sendhttpv2peer << EOF > command changesetdata > revisions eval:[{b'type': b'changesetdagrange', b'roots': []}] > EOF creating http peer for wire protocol version 2 sending changesetdata command abort: heads key not present in changesetdagrange revision specifier! [255] $ sendhttpv2peer << EOF > command changesetdata > revisions eval:[{b'type': b'changesetdagrange', b'heads': [b'dummy']}] > EOF creating http peer for wire protocol version 2 sending changesetdata command abort: roots key not present in changesetdagrange revision specifier! [255] Empty changesetdagrange heads results in an error $ sendhttpv2peer << EOF > command changesetdata > revisions eval:[{b'type': b'changesetdagrange', b'heads': [], b'roots': []}] > EOF creating http peer for wire protocol version 2 sending changesetdata command abort: heads key in changesetdagrange cannot be empty! [255] Sending just dagrange heads sends all revisions $ sendhttpv2peer << EOF > command changesetdata > revisions eval:[{ > b'type': b'changesetdagrange', > b'roots': [], > b'heads': [ > b'\x0b\xb8\xad\x89\x4a\x15\xb1\x53\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f\x2a\x4b\x28\xdd', > b'\xea\xe5\xf8\x2c\x2e\x62\x23\x68\xd2\x7d\xae\xcb\x76\xb7\xe3\x93\xd0\xf2\x42\x11', > ]}] > EOF creating http peer for wire protocol version 2 sending changesetdata command response: gen[ { b'totalitems': 4 }, { b'node': b'3\x90\xef\x85\x00s\xfb\xc2\xf0\xdf\xff"D4,\x8e\x92)\x01:' }, { b'node': b'u\x92\x91~\x1c>\x82g|\xb0\xa4\xbcq\\\xa2]\xd1-(\xc1' }, { b'node': b'\x0b\xb8\xad\x89J\x15\xb1S\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f*K(\xdd' }, { b'node': b'\xea\xe5\xf8,.b#h\xd2}\xae\xcbv\xb7\xe3\x93\xd0\xf2B\x11' } ] Sending root nodes limits what data is sent $ sendhttpv2peer << EOF > command changesetdata > revisions eval:[{ > b'type': b'changesetdagrange', > b'roots': [b'\x33\x90\xef\x85\x00\x73\xfb\xc2\xf0\xdf\xff\x22\x44\x34\x2c\x8e\x92\x29\x01\x3a'], > b'heads': [ > b'\x0b\xb8\xad\x89\x4a\x15\xb1\x53\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f\x2a\x4b\x28\xdd', > ]}] > EOF creating http peer for wire protocol version 2 sending changesetdata command response: gen[ { b'totalitems': 2 }, { b'node': b'u\x92\x91~\x1c>\x82g|\xb0\xa4\xbcq\\\xa2]\xd1-(\xc1' }, { b'node': b'\x0b\xb8\xad\x89J\x15\xb1S\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f*K(\xdd' } ] Requesting data on a single node by node works $ sendhttpv2peer << EOF > command changesetdata > revisions eval:[{ > b'type': b'changesetexplicit', > b'nodes': [b'\x33\x90\xef\x85\x00\x73\xfb\xc2\xf0\xdf\xff\x22\x44\x34\x2c\x8e\x92\x29\x01\x3a']}] > EOF creating http peer for wire protocol version 2 sending changesetdata command response: gen[ { b'totalitems': 1 }, { b'node': b'3\x90\xef\x85\x00s\xfb\xc2\xf0\xdf\xff"D4,\x8e\x92)\x01:' } ] Specifying a noderange and nodes takes union $ sendhttpv2peer << EOF > command changesetdata > revisions eval:[ > { > b'type': b'changesetexplicit', > b'nodes': [b'\xea\xe5\xf8\x2c\x2e\x62\x23\x68\xd2\x7d\xae\xcb\x76\xb7\xe3\x93\xd0\xf2\x42\x11'], > }, > { > b'type': b'changesetdagrange', > b'roots': [b'\x75\x92\x91\x7e\x1c\x3e\x82\x67\x7c\xb0\xa4\xbc\x71\x5c\xa2\x5d\xd1\x2d\x28\xc1'], > b'heads': [b'\x0b\xb8\xad\x89\x4a\x15\xb1\x53\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f\x2a\x4b\x28\xdd'], > }] > EOF creating http peer for wire protocol version 2 sending changesetdata command response: gen[ { b'totalitems': 2 }, { b'node': b'\xea\xe5\xf8,.b#h\xd2}\xae\xcbv\xb7\xe3\x93\xd0\xf2B\x11' }, { b'node': b'\x0b\xb8\xad\x89J\x15\xb1S\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f*K(\xdd' } ] nodesdepth of 1 limits to exactly requested nodes $ sendhttpv2peer << EOF > command changesetdata > revisions eval:[{ > b'type': b'changesetexplicitdepth', > b'nodes': [b'\xea\xe5\xf8\x2c\x2e\x62\x23\x68\xd2\x7d\xae\xcb\x76\xb7\xe3\x93\xd0\xf2\x42\x11'], > b'depth': 1}] > EOF creating http peer for wire protocol version 2 sending changesetdata command response: gen[ { b'totalitems': 1 }, { b'node': b'\xea\xe5\xf8,.b#h\xd2}\xae\xcbv\xb7\xe3\x93\xd0\xf2B\x11' } ] nodesdepth of 2 limits to first ancestor $ sendhttpv2peer << EOF > command changesetdata > revisions eval:[{ > b'type': b'changesetexplicitdepth', > b'nodes': [b'\xea\xe5\xf8\x2c\x2e\x62\x23\x68\xd2\x7d\xae\xcb\x76\xb7\xe3\x93\xd0\xf2\x42\x11'], > b'depth': 2}] > EOF creating http peer for wire protocol version 2 sending changesetdata command response: gen[ { b'totalitems': 2 }, { b'node': b'3\x90\xef\x85\x00s\xfb\xc2\xf0\xdf\xff"D4,\x8e\x92)\x01:' }, { b'node': b'\xea\xe5\xf8,.b#h\xd2}\xae\xcbv\xb7\xe3\x93\xd0\xf2B\x11' } ] nodesdepth with multiple nodes $ sendhttpv2peer << EOF > command changesetdata > revisions eval:[{ > b'type': b'changesetexplicitdepth', > b'nodes': [b'\xea\xe5\xf8\x2c\x2e\x62\x23\x68\xd2\x7d\xae\xcb\x76\xb7\xe3\x93\xd0\xf2\x42\x11', b'\x0b\xb8\xad\x89\x4a\x15\xb1\x53\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f\x2a\x4b\x28\xdd'], > b'depth': 2}] > EOF creating http peer for wire protocol version 2 sending changesetdata command response: gen[ { b'totalitems': 4 }, { b'node': b'3\x90\xef\x85\x00s\xfb\xc2\xf0\xdf\xff"D4,\x8e\x92)\x01:' }, { b'node': b'u\x92\x91~\x1c>\x82g|\xb0\xa4\xbcq\\\xa2]\xd1-(\xc1' }, { b'node': b'\x0b\xb8\xad\x89J\x15\xb1S\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f*K(\xdd' }, { b'node': b'\xea\xe5\xf8,.b#h\xd2}\xae\xcbv\xb7\xe3\x93\xd0\xf2B\x11' } ] Parents data is transferred upon request $ sendhttpv2peer << EOF > command changesetdata > fields eval:[b'parents'] > revisions eval:[{ > b'type': b'changesetexplicit', > b'nodes': [ > b'\xea\xe5\xf8\x2c\x2e\x62\x23\x68\xd2\x7d\xae\xcb\x76\xb7\xe3\x93\xd0\xf2\x42\x11', > ]}] > EOF creating http peer for wire protocol version 2 sending changesetdata command response: gen[ { b'totalitems': 1 }, { b'node': b'\xea\xe5\xf8,.b#h\xd2}\xae\xcbv\xb7\xe3\x93\xd0\xf2B\x11', b'parents': [ b'3\x90\xef\x85\x00s\xfb\xc2\xf0\xdf\xff"D4,\x8e\x92)\x01:', b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00' ] } ] Phase data is transferred upon request $ sendhttpv2peer << EOF > command changesetdata > fields eval:[b'phase'] > revisions eval:[{ > b'type': b'changesetexplicit', > b'nodes': [ > b'\x0b\xb8\xad\x89\x4a\x15\xb1\x53\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f\x2a\x4b\x28\xdd', > ]}] > EOF creating http peer for wire protocol version 2 sending changesetdata command response: gen[ { b'totalitems': 1 }, { b'node': b'\x0b\xb8\xad\x89J\x15\xb1S\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f*K(\xdd', b'phase': b'public' } ] Revision data is transferred upon request $ sendhttpv2peer << EOF > command changesetdata > fields eval:[b'revision'] > revisions eval:[{ > b'type': b'changesetexplicit', > b'nodes': [ > b'\xea\xe5\xf8\x2c\x2e\x62\x23\x68\xd2\x7d\xae\xcb\x76\xb7\xe3\x93\xd0\xf2\x42\x11', > ]}] > EOF creating http peer for wire protocol version 2 sending changesetdata command response: gen[ { b'totalitems': 1 }, { b'fieldsfollowing': [ [ b'revision', 61 ] ], b'node': b'\xea\xe5\xf8,.b#h\xd2}\xae\xcbv\xb7\xe3\x93\xd0\xf2B\x11' }, b'1b74476799ec8318045db759b1b4bcc9b839d0aa\ntest\n0 0\na\n\ncommit 3' ] Bookmarks key isn't present if no bookmarks data $ sendhttpv2peer << EOF > command changesetdata > fields eval:[b'bookmarks'] > revisions eval:[{ > b'type': b'changesetdagrange', > b'roots': [], > b'heads': [ > b'\x0b\xb8\xad\x89\x4a\x15\xb1\x53\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f\x2a\x4b\x28\xdd', > b'\xea\xe5\xf8\x2c\x2e\x62\x23\x68\xd2\x7d\xae\xcb\x76\xb7\xe3\x93\xd0\xf2\x42\x11', > ]}] > EOF creating http peer for wire protocol version 2 sending changesetdata command response: gen[ { b'totalitems': 4 }, { b'node': b'3\x90\xef\x85\x00s\xfb\xc2\xf0\xdf\xff"D4,\x8e\x92)\x01:' }, { b'node': b'u\x92\x91~\x1c>\x82g|\xb0\xa4\xbcq\\\xa2]\xd1-(\xc1' }, { b'node': b'\x0b\xb8\xad\x89J\x15\xb1S\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f*K(\xdd' }, { b'node': b'\xea\xe5\xf8,.b#h\xd2}\xae\xcbv\xb7\xe3\x93\xd0\xf2B\x11' } ] Bookmarks are sent when requested $ hg -R ../server bookmark -r 0bb8ad894a15b15380b2a2a5b183e20f2a4b28dd book-1 $ hg -R ../server bookmark -r eae5f82c2e622368d27daecb76b7e393d0f24211 book-2 $ hg -R ../server bookmark -r eae5f82c2e622368d27daecb76b7e393d0f24211 book-3 $ sendhttpv2peer << EOF > command changesetdata > fields eval:[b'bookmarks'] > revisions eval:[{ > b'type': b'changesetdagrange', > b'roots': [], > b'heads': [ > b'\x0b\xb8\xad\x89\x4a\x15\xb1\x53\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f\x2a\x4b\x28\xdd', > b'\xea\xe5\xf8\x2c\x2e\x62\x23\x68\xd2\x7d\xae\xcb\x76\xb7\xe3\x93\xd0\xf2\x42\x11', > ]}] > EOF creating http peer for wire protocol version 2 sending changesetdata command response: gen[ { b'totalitems': 4 }, { b'node': b'3\x90\xef\x85\x00s\xfb\xc2\xf0\xdf\xff"D4,\x8e\x92)\x01:' }, { b'node': b'u\x92\x91~\x1c>\x82g|\xb0\xa4\xbcq\\\xa2]\xd1-(\xc1' }, { b'bookmarks': [ b'book-1' ], b'node': b'\x0b\xb8\xad\x89J\x15\xb1S\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f*K(\xdd' }, { b'bookmarks': [ b'book-2', b'book-3' ], b'node': b'\xea\xe5\xf8,.b#h\xd2}\xae\xcbv\xb7\xe3\x93\xd0\xf2B\x11' } ] Bookmarks are sent when we make a no-new-revisions request $ sendhttpv2peer << EOF > command changesetdata > fields eval:[b'bookmarks', b'revision'] > revisions eval:[{ > b'type': b'changesetdagrange', > b'roots': [b'\xea\xe5\xf8\x2c\x2e\x62\x23\x68\xd2\x7d\xae\xcb\x76\xb7\xe3\x93\xd0\xf2\x42\x11'], > b'heads': [ > b'\x0b\xb8\xad\x89\x4a\x15\xb1\x53\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f\x2a\x4b\x28\xdd', > b'\xea\xe5\xf8\x2c\x2e\x62\x23\x68\xd2\x7d\xae\xcb\x76\xb7\xe3\x93\xd0\xf2\x42\x11', > ]}] > EOF creating http peer for wire protocol version 2 sending changesetdata command response: gen[ { b'totalitems': 2 }, { b'fieldsfollowing': [ [ b'revision', 63 ] ], b'node': b'u\x92\x91~\x1c>\x82g|\xb0\xa4\xbcq\\\xa2]\xd1-(\xc1' }, b'7f144aea0ba742713887b564d57e9d12f12ff382\ntest\n0 0\na\nb\n\ncommit 1', { b'bookmarks': [ b'book-1' ], b'fieldsfollowing': [ [ b'revision', 61 ] ], b'node': b'\x0b\xb8\xad\x89J\x15\xb1S\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f*K(\xdd' }, b'37f0a2d1c28ffe4b879109a7d1bbf8f07b3c763b\ntest\n0 0\nb\n\ncommit 2', { b'bookmarks': [ b'book-2', b'book-3' ], b'node': b'\xea\xe5\xf8,.b#h\xd2}\xae\xcbv\xb7\xe3\x93\xd0\xf2B\x11' } ] Multiple fields can be transferred $ sendhttpv2peer << EOF > command changesetdata > fields eval:[b'parents', b'revision'] > revisions eval:[{ > b'type': b'changesetexplicit', > b'nodes': [ > b'\xea\xe5\xf8\x2c\x2e\x62\x23\x68\xd2\x7d\xae\xcb\x76\xb7\xe3\x93\xd0\xf2\x42\x11', > ]}] > EOF creating http peer for wire protocol version 2 sending changesetdata command response: gen[ { b'totalitems': 1 }, { b'fieldsfollowing': [ [ b'revision', 61 ] ], b'node': b'\xea\xe5\xf8,.b#h\xd2}\xae\xcbv\xb7\xe3\x93\xd0\xf2B\x11', b'parents': [ b'3\x90\xef\x85\x00s\xfb\xc2\xf0\xdf\xff"D4,\x8e\x92)\x01:', b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00' ] }, b'1b74476799ec8318045db759b1b4bcc9b839d0aa\ntest\n0 0\na\n\ncommit 3' ] Base nodes have just their metadata (e.g. phase) transferred TODO this doesn't work $ sendhttpv2peer << EOF > command changesetdata > fields eval:[b'phase', b'parents', b'revision'] > revisions eval:[{ > b'type': b'changesetdagrange', > b'roots': [b'\x33\x90\xef\x85\x00\x73\xfb\xc2\xf0\xdf\xff\x22\x44\x34\x2c\x8e\x92\x29\x01\x3a'], > b'heads': [ > b'\x0b\xb8\xad\x89\x4a\x15\xb1\x53\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f\x2a\x4b\x28\xdd', > b'\xea\xe5\xf8\x2c\x2e\x62\x23\x68\xd2\x7d\xae\xcb\x76\xb7\xe3\x93\xd0\xf2\x42\x11', > ]}] > EOF creating http peer for wire protocol version 2 sending changesetdata command response: gen[ { b'totalitems': 3 }, { b'fieldsfollowing': [ [ b'revision', 63 ] ], b'node': b'u\x92\x91~\x1c>\x82g|\xb0\xa4\xbcq\\\xa2]\xd1-(\xc1', b'parents': [ b'3\x90\xef\x85\x00s\xfb\xc2\xf0\xdf\xff"D4,\x8e\x92)\x01:', b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00' ], b'phase': b'public' }, b'7f144aea0ba742713887b564d57e9d12f12ff382\ntest\n0 0\na\nb\n\ncommit 1', { b'fieldsfollowing': [ [ b'revision', 61 ] ], b'node': b'\x0b\xb8\xad\x89J\x15\xb1S\x80\xb2\xa2\xa5\xb1\x83\xe2\x0f*K(\xdd', b'parents': [ b'u\x92\x91~\x1c>\x82g|\xb0\xa4\xbcq\\\xa2]\xd1-(\xc1', b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00' ], b'phase': b'public' }, b'37f0a2d1c28ffe4b879109a7d1bbf8f07b3c763b\ntest\n0 0\nb\n\ncommit 2', { b'fieldsfollowing': [ [ b'revision', 61 ] ], b'node': b'\xea\xe5\xf8,.b#h\xd2}\xae\xcbv\xb7\xe3\x93\xd0\xf2B\x11', b'parents': [ b'3\x90\xef\x85\x00s\xfb\xc2\xf0\xdf\xff"D4,\x8e\x92)\x01:', b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00' ], b'phase': b'draft' }, b'1b74476799ec8318045db759b1b4bcc9b839d0aa\ntest\n0 0\na\n\ncommit 3' ] $ cat error.log