===================================

Test the persistent on-disk nodemap

===================================

  $ cat << EOF >> $HGRCPATH

  > [format]

  > use-persistent-nodemap=yes

  > [devel]

  > persistent-nodemap=yes

  > EOF

  $ hg init test-repo --config storage.revlog.persistent-nodemap.slow-path=allow

  $ cd test-repo

Check handling of the default slow-path value

#if no-pure no-rust

  $ hg id

  abort: accessing `persistent-nodemap` repository without associated fast implementation.

  (check `hg help config.format.use-persistent-nodemap` for details)

  [255]

Unlock further check (we are here to test the feature)

  $ cat << EOF >> $HGRCPATH

  > [storage]

  > # to avoid spamming the test

  > revlog.persistent-nodemap.slow-path=allow

  > EOF

#endif

#if rust

Regression test for a previous bug in Rust/C FFI for the `Revlog_CAPI` capsule:

in places where `mercurial/cext/revlog.c` function signatures use `Py_ssize_t`

(64 bits on Linux x86_64), corresponding declarations in `rust/hg-cpython/src/cindex.rs`

incorrectly used `libc::c_int` (32 bits).

As a result, -1 passed from Rust for the null revision became 4294967295 in C.

  $ hg log -r 00000000

  changeset:   -1:000000000000

  tag:         tip

  user:        

  date:        Thu Jan 01 00:00:00 1970 +0000

#endif

  $ hg debugformat

  format-variant     repo

  fncache:            yes

  dotencode:          yes

  generaldelta:       yes

  share-safe:          no

  sparserevlog:       yes

  persistent-nodemap: yes

  copies-sdc:          no

  revlog-v2:           no

  plain-cl-delta:     yes

  compression:        zlib (no-zstd !)

  compression:        zstd (zstd !)

  compression-level:  default

  $ hg debugbuilddag .+5000 --new-file

  $ hg debugnodemap --metadata

  uid: ???????????????? (glob)

  tip-rev: 5000

  tip-node: 6b02b8c7b96654c25e86ba69eda198d7e6ad8b3c

  data-length: 121088

  data-unused: 0

  data-unused: 0.000%

  $ f --size .hg/store/00changelog.n

  .hg/store/00changelog.n: size=70

Simple lookup works

  $ ANYNODE=`hg log --template '{node|short}\n' --rev tip`

  $ hg log -r "$ANYNODE" --template '{rev}\n'

  5000

#if rust

  $ f --sha256 .hg/store/00changelog-*.nd

  .hg/store/00changelog-????????????????.nd: sha256=2e029d3200bd1a986b32784fc2ef1a3bd60dc331f025718bcf5ff44d93f026fd (glob)

  $ f --sha256 .hg/store/00manifest-*.nd

  .hg/store/00manifest-????????????????.nd: sha256=97117b1c064ea2f86664a124589e47db0e254e8d34739b5c5cc5bf31c9da2b51 (glob)

  $ hg debugnodemap --dump-new | f --sha256 --size

  size=121088, sha256=2e029d3200bd1a986b32784fc2ef1a3bd60dc331f025718bcf5ff44d93f026fd

  $ hg debugnodemap --dump-disk | f --sha256 --bytes=256 --hexdump --size

  size=121088, sha256=2e029d3200bd1a986b32784fc2ef1a3bd60dc331f025718bcf5ff44d93f026fd

  0000: 00 00 00 91 00 00 00 20 00 00 00 bb 00 00 00 e7 |....... ........|

  0010: 00 00 00 66 00 00 00 a1 00 00 01 13 00 00 01 22 |...f..........."|

  0020: 00 00 00 23 00 00 00 fc 00 00 00 ba 00 00 00 5e |...#...........^|

  0030: 00 00 00 df 00 00 01 4e 00 00 01 65 00 00 00 ab |.......N...e....|

  0040: 00 00 00 a9 00 00 00 95 00 00 00 73 00 00 00 38 |...........s...8|

  0050: 00 00 00 cc 00 00 00 92 00 00 00 90 00 00 00 69 |...............i|

  0060: 00 00 00 ec 00 00 00 8d 00 00 01 4f 00 00 00 12 |...........O....|

  0070: 00 00 02 0c 00 00 00 77 00 00 00 9c 00 00 00 8f |.......w........|

  0080: 00 00 00 d5 00 00 00 6b 00 00 00 48 00 00 00 b3 |.......k...H....|

  0090: 00 00 00 e5 00 00 00 b5 00 00 00 8e 00 00 00 ad |................|

  00a0: 00 00 00 7b 00 00 00 7c 00 00 00 0b 00 00 00 2b |...{...|.......+|

  00b0: 00 00 00 c6 00 00 00 1e 00 00 01 08 00 00 00 11 |................|

  00c0: 00 00 01 30 00 00 00 26 00 00 01 9c 00 00 00 35 |...0...&.......5|

  00d0: 00 00 00 b8 00 00 01 31 00 00 00 2c 00 00 00 55 |.......1...,...U|

  00e0: 00 00 00 8a 00 00 00 9a 00 00 00 0c 00 00 01 1e |................|

  00f0: 00 00 00 a4 00 00 00 83 00 00 00 c9 00 00 00 8c |................|

#else

  $ f --sha256 .hg/store/00changelog-*.nd

  .hg/store/00changelog-????????????????.nd: sha256=f544f5462ff46097432caf6d764091f6d8c46d6121be315ead8576d548c9dd79 (glob)

  $ hg debugnodemap --dump-new | f --sha256 --size

  size=121088, sha256=f544f5462ff46097432caf6d764091f6d8c46d6121be315ead8576d548c9dd79

  $ hg debugnodemap --dump-disk | f --sha256 --bytes=256 --hexdump --size

  size=121088, sha256=f544f5462ff46097432caf6d764091f6d8c46d6121be315ead8576d548c9dd79

  0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|

  0010: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|

  0020: ff ff ff ff ff ff f5 06 ff ff ff ff ff ff f3 e7 |................|

  0030: ff ff ef ca ff ff ff ff ff ff ff ff ff ff ff ff |................|

  0040: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|

  0050: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ed 08 |................|

  0060: ff ff ed 66 ff ff ff ff ff ff ff ff ff ff ff ff |...f............|

  0070: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|

  0080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|

  0090: ff ff ff ff ff ff ff ff ff ff ff ff ff ff f6 ed |................|

  00a0: ff ff ff ff ff ff fe 61 ff ff ff ff ff ff ff ff |.......a........|

  00b0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|

  00c0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|

  00d0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|

  00e0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff f1 02 |................|

  00f0: ff ff ff ff ff ff ed 1b ff ff ff ff ff ff ff ff |................|

#endif

  $ hg debugnodemap --check

  revision in index:   5001

  revision in nodemap: 5001

add a new commit

  $ hg up

  5001 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ echo foo > foo

  $ hg add foo

Check slow-path config value handling

-------------------------------------

#if no-pure no-rust

  $ hg id --config "storage.revlog.persistent-nodemap.slow-path=invalid-value"

  unknown value for config "storage.revlog.persistent-nodemap.slow-path": "invalid-value"

  falling back to default value: abort

  abort: accessing `persistent-nodemap` repository without associated fast implementation.

  (check `hg help config.format.use-persistent-nodemap` for details)

  [255]

  $ hg log -r . --config "storage.revlog.persistent-nodemap.slow-path=warn"

  warning: accessing `persistent-nodemap` repository without associated fast implementation.

  (check `hg help config.format.use-persistent-nodemap` for details)

  changeset:   5000:6b02b8c7b966

  tag:         tip

  user:        debugbuilddag

  date:        Thu Jan 01 01:23:20 1970 +0000

  summary:     r5000

  $ hg ci -m 'foo' --config "storage.revlog.persistent-nodemap.slow-path=abort"

  abort: accessing `persistent-nodemap` repository without associated fast implementation.

  (check `hg help config.format.use-persistent-nodemap` for details)

  [255]

#else

  $ hg id --config "storage.revlog.persistent-nodemap.slow-path=invalid-value"

  unknown value for config "storage.revlog.persistent-nodemap.slow-path": "invalid-value"

  falling back to default value: abort

  6b02b8c7b966+ tip

#endif

  $ hg ci -m 'foo'

#if no-pure no-rust

  $ hg debugnodemap --metadata

  uid: ???????????????? (glob)

  tip-rev: 5001

  tip-node: 16395c3cf7e231394735e6b1717823ada303fb0c

  data-length: 121088

  data-unused: 0

  data-unused: 0.000%

#else

  $ hg debugnodemap --metadata

  uid: ???????????????? (glob)

  tip-rev: 5001

  tip-node: 16395c3cf7e231394735e6b1717823ada303fb0c

  data-length: 121344

  data-unused: 256

  data-unused: 0.211%

#endif

  $ f --size .hg/store/00changelog.n

  .hg/store/00changelog.n: size=70

(The pure code use the debug code that perform incremental update, the C code reencode from scratch)

#if pure

  $ f --sha256 .hg/store/00changelog-*.nd --size

  .hg/store/00changelog-????????????????.nd: size=121344, sha256=cce54c5da5bde3ad72a4938673ed4064c86231b9c64376b082b163fdb20f8f66 (glob)

#endif

#if rust

  $ f --sha256 .hg/store/00changelog-*.nd --size

  .hg/store/00changelog-????????????????.nd: size=121344, sha256=952b042fcf614ceb37b542b1b723e04f18f83efe99bee4e0f5ccd232ef470e58 (glob)

#endif

#if no-pure no-rust

  $ f --sha256 .hg/store/00changelog-*.nd --size

  .hg/store/00changelog-????????????????.nd: size=121088, sha256=df7c06a035b96cb28c7287d349d603baef43240be7736fe34eea419a49702e17 (glob)

#endif

  $ hg debugnodemap --check

  revision in index:   5002

  revision in nodemap: 5002

Test code path without mmap

---------------------------

  $ echo bar > bar

  $ hg add bar

  $ hg ci -m 'bar' --config storage.revlog.persistent-nodemap.mmap=no

  $ hg debugnodemap --check --config storage.revlog.persistent-nodemap.mmap=yes

  revision in index:   5003

  revision in nodemap: 5003

  $ hg debugnodemap --check --config storage.revlog.persistent-nodemap.mmap=no

  revision in index:   5003

  revision in nodemap: 5003

#if pure

  $ hg debugnodemap --metadata

  uid: ???????????????? (glob)

  tip-rev: 5002

  tip-node: 880b18d239dfa9f632413a2071bfdbcc4806a4fd

  data-length: 121600

  data-unused: 512

  data-unused: 0.421%

  $ f --sha256 .hg/store/00changelog-*.nd --size

  .hg/store/00changelog-????????????????.nd: size=121600, sha256=def52503d049ccb823974af313a98a935319ba61f40f3aa06a8be4d35c215054 (glob)

#endif

#if rust

  $ hg debugnodemap --metadata

  uid: ???????????????? (glob)

  tip-rev: 5002

  tip-node: 880b18d239dfa9f632413a2071bfdbcc4806a4fd

  data-length: 121600

  data-unused: 512

  data-unused: 0.421%

  $ f --sha256 .hg/store/00changelog-*.nd --size

  .hg/store/00changelog-????????????????.nd: size=121600, sha256=dacf5b5f1d4585fee7527d0e67cad5b1ba0930e6a0928f650f779aefb04ce3fb (glob)

#endif

#if no-pure no-rust

  $ hg debugnodemap --metadata

  uid: ???????????????? (glob)

  tip-rev: 5002

  tip-node: 880b18d239dfa9f632413a2071bfdbcc4806a4fd

  data-length: 121088

  data-unused: 0

  data-unused: 0.000%

  $ f --sha256 .hg/store/00changelog-*.nd --size

  .hg/store/00changelog-????????????????.nd: size=121088, sha256=59fcede3e3cc587755916ceed29e3c33748cd1aa7d2f91828ac83e7979d935e8 (glob)

#endif

Test force warming the cache

  $ rm .hg/store/00changelog.n

  $ hg debugnodemap --metadata

  $ hg debugupdatecache

#if pure

  $ hg debugnodemap --metadata

  uid: ???????????????? (glob)

  tip-rev: 5002

  tip-node: 880b18d239dfa9f632413a2071bfdbcc4806a4fd

  data-length: 121088

  data-unused: 0

  data-unused: 0.000%

#else

  $ hg debugnodemap --metadata

  uid: ???????????????? (glob)

  tip-rev: 5002

  tip-node: 880b18d239dfa9f632413a2071bfdbcc4806a4fd

  data-length: 121088

  data-unused: 0

  data-unused: 0.000%

#endif

Check out of sync nodemap

=========================

First copy old data on the side.

  $ mkdir ../tmp-copies

  $ cp .hg/store/00changelog-????????????????.nd .hg/store/00changelog.n ../tmp-copies

Nodemap lagging behind

----------------------

make a new commit

  $ echo bar2 > bar

  $ hg ci -m 'bar2'

  $ NODE=`hg log -r tip -T '{node}\n'`

  $ hg log -r "$NODE" -T '{rev}\n'

  5003

If the nodemap is lagging behind, it can catch up fine

  $ hg debugnodemap --metadata

  uid: ???????????????? (glob)

  tip-rev: 5003

  tip-node: c9329770f979ade2d16912267c38ba5f82fd37b3

  data-length: 121344 (pure !)

  data-length: 121344 (rust !)

  data-length: 121152 (no-rust no-pure !)

  data-unused: 192 (pure !)

  data-unused: 192 (rust !)

  data-unused: 0 (no-rust no-pure !)

  data-unused: 0.158% (pure !)

  data-unused: 0.158% (rust !)

  data-unused: 0.000% (no-rust no-pure !)

  $ cp -f ../tmp-copies/* .hg/store/

  $ hg debugnodemap --metadata

  uid: ???????????????? (glob)

  tip-rev: 5002

  tip-node: 880b18d239dfa9f632413a2071bfdbcc4806a4fd

  data-length: 121088

  data-unused: 0

  data-unused: 0.000%

  $ hg log -r "$NODE" -T '{rev}\n'

  5003

changelog altered

-----------------

If the nodemap is not gated behind a requirements, an unaware client can alter

the repository so the revlog used to generate the nodemap is not longer

compatible with the persistent nodemap. We need to detect that.

  $ hg up "$NODE~5"

  0 files updated, 0 files merged, 4 files removed, 0 files unresolved

  $ echo bar > babar

  $ hg add babar

  $ hg ci -m 'babar'

  created new head

  $ OTHERNODE=`hg log -r tip -T '{node}\n'`

  $ hg log -r "$OTHERNODE" -T '{rev}\n'

  5004

  $ hg --config extensions.strip= strip --rev "$NODE~1" --no-backup

the nodemap should detect the changelog have been tampered with and recover.

  $ hg debugnodemap --metadata

  uid: ???????????????? (glob)

  tip-rev: 5002

  tip-node: b355ef8adce0949b8bdf6afc72ca853740d65944

  data-length: 121536 (pure !)

  data-length: 121088 (rust !)

  data-length: 121088 (no-pure no-rust !)

  data-unused: 448 (pure !)

  data-unused: 0 (rust !)

  data-unused: 0 (no-pure no-rust !)

  data-unused: 0.000% (rust !)

  data-unused: 0.369% (pure !)

  data-unused: 0.000% (no-pure no-rust !)

  $ cp -f ../tmp-copies/* .hg/store/

  $ hg debugnodemap --metadata

  uid: ???????????????? (glob)

  tip-rev: 5002

  tip-node: 880b18d239dfa9f632413a2071bfdbcc4806a4fd

  data-length: 121088

  data-unused: 0

  data-unused: 0.000%

  $ hg log -r "$OTHERNODE" -T '{rev}\n'

  5002

missing data file

-----------------

  $ UUID=`hg debugnodemap --metadata| grep 'uid:' | \

  > sed 's/uid: //'`

  $ FILE=.hg/store/00changelog-"${UUID}".nd

  $ mv $FILE ../tmp-data-file

  $ cp .hg/store/00changelog.n ../tmp-docket

mercurial don't crash

  $ hg log -r .

  changeset:   5002:b355ef8adce0

  tag:         tip

  parent:      4998:d918ad6d18d3

  user:        test

  date:        Thu Jan 01 00:00:00 1970 +0000

  summary:     babar

  $ hg debugnodemap --metadata

  $ hg debugupdatecache

  $ hg debugnodemap --metadata

  uid: * (glob)