The end goal is to have changesets centric sidedata information stored into
changelog sidedata. This make it possible to use the changeset based copy
tracing algorithm on any repository without affecting hashes.
The actual implementation is coming. The feature is marked as experimental
(do not use in production) until we stabilise details about the format.
| Automatic diff as part of commit; lint not applicable. |
| Automatic diff as part of commit; unit tests not applicable. |
| Path | Packages | |||
|---|---|---|---|---|
| M | mercurial/configitems.py (6 lines) | |||
| M | mercurial/localrepo.py (9 lines) |
| ) | ) | ||||
| coreconfigitem( | coreconfigitem( | ||||
| b'format', b'usegeneraldelta', default=True, | b'format', b'usegeneraldelta', default=True, | ||||
| ) | ) | ||||
| coreconfigitem( | coreconfigitem( | ||||
| b'format', b'usestore', default=True, | b'format', b'usestore', default=True, | ||||
| ) | ) | ||||
| coreconfigitem( | coreconfigitem( | ||||
| b'format', | |||||
| b'exp-use-copies-side-data-changeset', | |||||
| default=False, | |||||
| experimental=True, | |||||
| ) | |||||
| coreconfigitem( | |||||
| b'format', b'use-side-data', default=False, experimental=True, | b'format', b'use-side-data', default=False, experimental=True, | ||||
| ) | ) | ||||
| coreconfigitem( | coreconfigitem( | ||||
| b'format', b'internal-phase', default=False, experimental=True, | b'format', b'internal-phase', default=False, experimental=True, | ||||
| ) | ) | ||||
| coreconfigitem( | coreconfigitem( | ||||
| b'fsmonitor', b'warn_when_unused', default=True, | b'fsmonitor', b'warn_when_unused', default=True, | ||||
| ) | ) | ||||
| # including all the intermediate revisions that aren't pertinent for the chain. | # including all the intermediate revisions that aren't pertinent for the chain. | ||||
| # This is why once a repository has enabled sparse-read, it becomes required. | # This is why once a repository has enabled sparse-read, it becomes required. | ||||
| SPARSEREVLOG_REQUIREMENT = b'sparserevlog' | SPARSEREVLOG_REQUIREMENT = b'sparserevlog' | ||||
| # A repository with the sidedataflag requirement will allow to store extra | # A repository with the sidedataflag requirement will allow to store extra | ||||
| # information for revision without altering their original hashes. | # information for revision without altering their original hashes. | ||||
| SIDEDATA_REQUIREMENT = b'exp-sidedata-flag' | SIDEDATA_REQUIREMENT = b'exp-sidedata-flag' | ||||
| # A repository with the the copies-sidedata-changeset requirement will store | |||||
| # copies related information in changeset's sidedata. | |||||
| COPIESSDC_REQUIREMENT = b'exp-copies-sidedata-changeset' | |||||
| # Functions receiving (ui, features) that extensions can register to impact | # Functions receiving (ui, features) that extensions can register to impact | ||||
| # the ability to load repositories with custom requirements. Only | # the ability to load repositories with custom requirements. Only | ||||
| # functions defined in loaded extensions are called. | # functions defined in loaded extensions are called. | ||||
| # | # | ||||
| # The function receives a set of requirement strings that the repository | # The function receives a set of requirement strings that the repository | ||||
| # is capable of opening. Functions will typically add elements to the | # is capable of opening. Functions will typically add elements to the | ||||
| # set to reflect that the extension knows how to handle that requirements. | # set to reflect that the extension knows how to handle that requirements. | ||||
| featuresetupfuncs = set() | featuresetupfuncs = set() | ||||
| # - manifestv2: An experimental new manifest format that allowed | # - manifestv2: An experimental new manifest format that allowed | ||||
| # for stem compression of long paths. Experiment ended up not | # for stem compression of long paths. Experiment ended up not | ||||
| # being successful (repository sizes went up due to worse delta | # being successful (repository sizes went up due to worse delta | ||||
| # chains), and the code was deleted in 4.6. | # chains), and the code was deleted in 4.6. | ||||
| supportedformats = { | supportedformats = { | ||||
| b'revlogv1', | b'revlogv1', | ||||
| b'generaldelta', | b'generaldelta', | ||||
| b'treemanifest', | b'treemanifest', | ||||
| COPIESSDC_REQUIREMENT, | |||||
| REVLOGV2_REQUIREMENT, | REVLOGV2_REQUIREMENT, | ||||
| SIDEDATA_REQUIREMENT, | SIDEDATA_REQUIREMENT, | ||||
| SPARSEREVLOG_REQUIREMENT, | SPARSEREVLOG_REQUIREMENT, | ||||
| bookmarks.BOOKMARKS_IN_STORE_REQUIREMENT, | bookmarks.BOOKMARKS_IN_STORE_REQUIREMENT, | ||||
| } | } | ||||
| _basesupported = supportedformats | { | _basesupported = supportedformats | { | ||||
| b'store', | b'store', | ||||
| b'fncache', | b'fncache', | ||||
| if scmutil.gdinitconfig(ui): | if scmutil.gdinitconfig(ui): | ||||
| requirements.add(b'generaldelta') | requirements.add(b'generaldelta') | ||||
| if ui.configbool(b'format', b'sparse-revlog'): | if ui.configbool(b'format', b'sparse-revlog'): | ||||
| requirements.add(SPARSEREVLOG_REQUIREMENT) | requirements.add(SPARSEREVLOG_REQUIREMENT) | ||||
| # experimental config: format.use-side-data | # experimental config: format.use-side-data | ||||
| if ui.configbool(b'format', b'use-side-data'): | if ui.configbool(b'format', b'use-side-data'): | ||||
| requirements.add(SIDEDATA_REQUIREMENT) | requirements.add(SIDEDATA_REQUIREMENT) | ||||
| # experimental config: format.exp-use-copies-side-data-changeset | |||||
| if ui.configbool(b'format', b'exp-use-copies-side-data-changeset'): | |||||
| requirements.add(SIDEDATA_REQUIREMENT) | |||||
| requirements.add(COPIESSDC_REQUIREMENT) | |||||
| if ui.configbool(b'experimental', b'treemanifest'): | if ui.configbool(b'experimental', b'treemanifest'): | ||||
| requirements.add(b'treemanifest') | requirements.add(b'treemanifest') | ||||
| revlogv2 = ui.config(b'experimental', b'revlogv2') | revlogv2 = ui.config(b'experimental', b'revlogv2') | ||||
| if revlogv2 == b'enable-unstable-format-and-corrupt-my-data': | if revlogv2 == b'enable-unstable-format-and-corrupt-my-data': | ||||
| requirements.remove(b'revlogv1') | requirements.remove(b'revlogv1') | ||||
| # generaldelta is implied by revlogv2. | # generaldelta is implied by revlogv2. | ||||
| requirements.discard(b'generaldelta') | requirements.discard(b'generaldelta') | ||||