wireproto: use repo.lookup() for lookup command I'm trying to reduce use of repo[<string>] and this seems like an obvious place to use repo.lookup(). Differential Revision: https://phab.mercurial-scm.org/D3081

localrepo: use revsymbol in lookupbranch() too lookupbranch() takes a string that comes from the CLI, so scmutil.revsymbol() is appropriate for looking it up. Differential Revision: https://phab.mercurial-scm.org/D3080

localrepo: drop "remote" argument from lookupbranch() (API) According to `hg grep --all lookupbranch`, the "remote" argument has never been used ever since it was introduced in ca739acf1a98 (commands: add more robust support for 'hg log -b' (issue2078), 2010-04-12). Differential Revision: https://phab.mercurial-scm.org/D3079

revset: use revsymbol() for checking if a symbol is valid Differential Revision: https://phab.mercurial-scm.org/D3078

tests: disable tests for advanced clone features with simple store There are a handful of test failures in the simple store with regards to stream clones. Fixing them will require a lot of conditional output. Disabling the tests wholesale is easier at this juncture. Differential Revision: https://phab.mercurial-scm.org/D3064

tests: skip largefiles and lfs tests when using simple store Getting these tests to pass is more work than it is worth right now. Let's punt on it. Differential Revision: https://phab.mercurial-scm.org/D3063

tests: conditionalize test output for simple store Differential Revision: https://phab.mercurial-scm.org/D3061

tests: disallow using simple store repo with bundlerepo bundlerepo is... going to be difficult to port to an alternate store because it assumes revlogs for storage and essentially overlays the contents of a bundle onto a fake revlog-like primitive. It will be a good test case for our eventual new storage interface. Refactoring bundlerepo to make it work with non-revlog storage is going to be a bit of work. So for now, let's refuse to use the simple store repo when a bundlerepo is in play. A new test requirement advertising support for treating bundle files as repo instances has been added. Some tests have been made conditional on this feature. Additional tests will be annotated in subsequent commits. Having positive opt-in to repo features will be simpler in the long run because it will allow multiple storage backends to declare feature support and we won't have to annotate each test with the set of repo backends that are supported. Again, we'll probably want better integration between repo features and tests. But this is the easiest we can do at the moment. Differential Revision: https://phab.mercurial-scm.org/D3060

tests: disable test-revlog-v2 when using simple store Because the simple store has nothing to do with revlogs. Differential Revision: https://phab.mercurial-scm.org/D3056

tests: skip filelog damage tests when not using revlogs Differential Revision: https://phab.mercurial-scm.org/D3042

tests: skip some tests when using simple store generaldelta is a revlog implementation detail. We don't need to test it with the simple store. union repos are heavily revlog based. It should be possible to run them with alternate stores. But it's not worth the trouble at this juncture. Differential Revision: https://phab.mercurial-scm.org/D3040

tests: conditionalize tests based on presence of custom extensions The test harness supports injecting extensions via --extra-config-opt. However, if you do this, various tests that print state about loaded extensions fail. This commit teaches the test harness to recognize when custom extensions are loaded so that tests can use feature sniffing to conditionalize tests based on that. Differential Revision: https://phab.mercurial-scm.org/D3039

simplestorerepo: avoid shadowing dict in list comprehension over dict Caught by pyflakes. Differential Revision: https://phab.mercurial-scm.org/D3077

narrow: pass node into revlog.revision() This is one of the few (possibly only) places where we pass an int in for filelogs. Other revlogs (notably changelog) are very heavy on int usage. But filelogs are surprisingly node centric. I'd like to formalize the interface around the use of nodes (at least for filelogs). So let's switch to a node. We can't inline revlog.node() because of a check-code rule. I think that rule is suspect. But it may be for performance reasons with changelog code. I'd rather not touch it at this time. Differential Revision: https://phab.mercurial-scm.org/D3043

changegroup: remove "revlog" from error message The previous message leaked an implementation detail. Differential Revision: https://phab.mercurial-scm.org/D3041

tests: conditionalize tests based on presence of revlogs for files ~85 tests don't like our non-revlog file store for various reasons. This commit introduces hghave functionality for declaring and querying repository features. By default, we assume repositories have revlog-based file storage. But if the HGREPOFEATURES environment variable is set, we can override the default set of repository features. If you run the test harness with our simplestorerepo extension and an environment variable set to the proper value, you can override the hghave defaults to agree with simplestorerepo's version of reality. Various tests have been modified so behavior dependent on revlog-based file storage is marked as such. This fixes a handful of test failures with our custom file storage extension. But dozens remain. The point of this commit is to demonstrate how tests will need to be modified to account for custom storage implementations. TBH, I'm not convinced hghave is the proper layer for repository feature detection. I /think/ we'll eventually want something in run-tests.py itself. But that would require inventing a new primitive in the test harness. This is all very alpha at the moment. So I think hghave is an acceptable place to hang this feature detection. I think the right time to be thinking about integrating this into run-tests.py is *after* we have a stable alternate storage implementation in core. For now, let's try to make progress towards the idea of an alternate storage backend. Differential Revision: https://phab.mercurial-scm.org/D3030

tests: add test extension implementing custom filelog storage In order to better support partial clones, we'll need alternate repository storage mechanisms that aren't based on revlogs. Today, the interface for repository storage isn't very well defined. And there are various layering violations and assumptions made throughout the code that storage is backed by revlogs. In order to support alternate storage mechanisms, we'll need to formally declare and adhere to interfaces for storage. This will be a long, arduous process. This commit creates an extension that implements non-revlog storage for files. It defines a custom type that quacks like the existing revlog/filelog API but isn't backed by a revlog. The backing storage is - for simplicity reasons - a CBOR index and per-node files representing fulltext data. The localrepository class is modified so file(f) returns instances of this class instead of filelog instances. The purpose of this extension is to tease out what the actual filelog interface is - based on running the test harness - so we can formalize that interface and then implement a *real* alternate storage backend. Using `run-tests.py --extra-config-opt` to run the test harness with this extension enabled yields 83 failures out of 634 ran tests. The most common test failures are due to: * Issues with `hg verify` * LFS and largefiles (probably flags processing related) * Narrow. * Any test touching or inspecting individual filelog paths. * help and error output that is confused by the presence of an extension. * `hg debug*` commands doing low-level, revlog-y things. An 88% pass rate is pretty good for an initial implementation if you ask me! There is a bit of duplicate code in the new extension. That's by design: a point of this code is to tease out dependencies on revlog. That being said, there is opportunity to consolidate code by moving things out of the revlog API. For example, DAG traversal operations don't necessarily need to be implemented at the storage level. (Although for performance reasons they probably do.) Once we have a more well-defined interface, we could probably define the default implementations in terms of the base interface, pull those in via class inheritance, and have implementations override with faster versions if they so choose. (Or something like that.) But for now, the duplicate code should be acceptable. Differential Revision: https://phab.mercurial-scm.org/D3029

tests: use `hg unbundle` instead of `hg pull` in some tests `hg pull <bundle>` uses the special "bundlerepo" repository. The bundlerepo code makes many assumptions about the storage of repositories. It will be difficult to teach bundlerepo to use non-revlog storage before a better storage interface is established. Many test failures using our "simple store" are related to bundlerepo: the simple store just isn't compatible with bundlerepo because of storage assumptions in bundlerepo. In order to mitigate the impact of bundlerepo on our code base, this commit changes various tests to use `hg unbundle` instead of `hg pull`. This bypasses the bundlerepo code. Tests exercising exchange functionality have not been altered, as they should be using `hg pull` and going through the bundlerepo code paths. Differential Revision: https://phab.mercurial-scm.org/D3059

hgweb: use revsymbol() for creating context from changeid These seem to be for looking up a revision that can come from the user, so revsymbol() is the right method to call (0194dac7 has more information about my plans for repo[x]). Differential Revision: https://phab.mercurial-scm.org/D3075

hgweb: inline changeidctx() Differential Revision: https://phab.mercurial-scm.org/D3074

hgweb: drop support for "manifest" parameter AFAICT (but note that this is the first time I look at hgweb code), the "mercurial" query parameter was removed from rendered pages in 36fa5db79dd5 (hgweb: convert gitweb to NWI, 2006-10-05). Search for "manifest=" in that diff to see why I think it was removed. It's about time we stop looking for the parameter in requests. Differential Revision: https://phab.mercurial-scm.org/D3073

rebase: use single transaction when running in memory rebase.singletransaction make rebase noticeably faster (~20% in a test I just ran). It is not enabled by default because it risks losing information if it aborts (see `hg help rebase`). When running rebase with the experimental in-memory option on, rebase is first attempted in memory, and if any conflicts occur, it restarts, this time writing to disk. Thus, it should be safe to turn on single-transaction mode for the in-memory phase. Differential Revision: https://phab.mercurial-scm.org/D3076

bundlerepo: use super() when calling file() We should be calling the default method, not reimplementing it. Differential Revision: https://phab.mercurial-scm.org/D3058

tests: remove superfluous config setting format.usegeneraldelta defaults to true. Differential Revision: https://phab.mercurial-scm.org/D3057

templater: mark .joinfmt as a private attribute

obsutil: make obsfateprinter() less dependent on templater joinfmt() is defined as 'lambda x: scmutil.formatchangeid(repo[x])' in showsuccsandmarkers(). Function arguments are reordered so they look more normal.

templater: abstract away from joinfmt Future patches will add a wrapper for a list of template mappings, which will implement a custom join() something like {join(mappings % template)}. The original join() function is broken down as follows: if hasattr(joinset, 'joinfmt'): # hybrid.join() where values must be a list or a dict joinitems((joinfmt(x) for x in values), sep) elif isinstance(joinset, templateutil.wrapped): # mappable.join() show() else: # a plain list, a generator, or a byte string; joinfmt was identity() joinset = templateutil.unwrapvalue(context, joinset) joinitems(pycompat.maybebytestr(joinset), joiner)

templater: micro-optimize join() with empty separator

templater: factor out generator of join()-ed items Prepares for defining join() behavior per wrapped types and getting rid of the public joinfmt attribute.

templater: pass context to itermaps() for future extension Unlike show() and tovalue(), a base mapping isn't passed to itermaps() since it is the function to generate a partial mapping.

templater: define interface for objects which act as iterator of mappings

stringutil: drop escapedata() in favor of escapestr() They are quite similar. Let's choose one that uses standard Python escape.

peer: make ui an attribute With abc interfaces, instance attributes could not satisfy @abc.abstractproperty requirements because interface conformance was tested at type creation time. When we created the abc peer interfaces, we had to make "ui" a @property to satisfy abc. Now that peer interfaces are using zope.interface and there is no import time validation (but there are tests validating instances conform to the interface), we can go back to using regular object attributes. Differential Revision: https://phab.mercurial-scm.org/D3069

repository: port peer interfaces to zope.interface zope.interface is superior. Let's switch to it. Unlike abc, which defines interfaces through a base class, zope.interface uses different types for interfaces and for implementations. So, we had to invent some new types to hold the interfaces in order to separate the interface from its default implementation. The names here could probably be better. I've been wanting to overhaul the peer interface for a while. And wire protocol version 2 will force that work. So anticipate a refactoring of these interfaces in later commits. With this commit, we no longer test abc interfaces in test-check-interfaces.py, so code for that has been removed. Differential Revision: https://phab.mercurial-scm.org/D3068 # no-check-commit because of stream_out()

wireproto: convert human output frames to CBOR This is easier than rolling our own encoding format. As a bonus, some of our artificial limits around lengths of things went away because we are no longer using fixed length fields to hold sizes. Differential Revision: https://phab.mercurial-scm.org/D3067

py3: use pycompat.bytestr() intsead of str Differential Revision: https://phab.mercurial-scm.org/D3071

py3: use print as a function in tests/test-walk.t Differential Revision: https://phab.mercurial-scm.org/D3070

repo: remove now-unused changectx() method (API) repo.changectx(x) was just a synonym for repo[x], so any extensions that fail due to this commit should switch over to that form. Differential Revision: https://phab.mercurial-scm.org/D3037

localrepo: use revsymbol() in lookup() lookup() seems to be about looking up a revision based on a symbol that may come from the user (via the wire protocol), so revsymbol() is appropriate here. Differential Revision: https://phab.mercurial-scm.org/D3055

histedit: avoid repo.lookup() for converting revnum to nodeid Differential Revision: https://phab.mercurial-scm.org/D3054

outgoing: avoid repo.lookup() for converting revnum to nodeid Differential Revision: https://phab.mercurial-scm.org/D3053

bisect: avoid repo.lookup() for converting revnum to nodeid Differential Revision: https://phab.mercurial-scm.org/D3052

transplant: avoid repo.lookup() for converting revnum to nodeid Differential Revision: https://phab.mercurial-scm.org/D3051

tests: avoid repo.lookup() for converting revnum to nodeid Differential Revision: https://phab.mercurial-scm.org/D3050

bundle: consistently keep a list of stringified revisions in "revs" Before this patch, "revs", in the "not base" branch, would be a list of mixed integral revnums, hex nodeids, and branch names. After this patch, they're all strings. They can still be a mix of hex nodeids and branch names, but the important thing for my future patches is that they're consistently in string form. Differential Revision: https://phab.mercurial-scm.org/D3049

bundle: avoid repo.lookup() for converting revnum to nodeid Differential Revision: https://phab.mercurial-scm.org/D3048

push: avoid using repo.lookup() for converting to nodeid repo.lookup(x) currently simply does repo[x].node(), which supports various types of inputs. As I explained in 0194dac77c93 (scmutil: add method for looking up a context given a revision symbol, 2018-04-02), I'd like to split that up so we use the new scmutil.revsymbol() for string inputs repo[x] for integer revnums and binary nodeids. Since repo.lookup() seems to exist in order to serve peer.lookup(), I think it should be calling revsymbol. However, we have several callers that use repo.lookup() with something that's not a string, so we need to remove those first. This patch starts doing that. Many more will follow. Differential Revision: https://phab.mercurial-scm.org/D3047

addremove: pass command-level similarity value down to scmutil.addremove() Since we've changed to carry a similarity value by opts dict, it makes sense to leave a string '0'-'100' value unmodified.