Commit Graph

13 Commits

Author SHA1 Message Date
Jun Wu
6fd7a2e582 dag: use concrete error types
Summary:
This is more complex than previous libraries, mainly because `dag` defines APIs
(traits) used by other code, which might raise error type not interested
by `dag` itself. `BackendError::Other(anyhow::Error)` is currently used to
capture types that do not fit in `dag`'s predefined error types.

Reviewed By: sfilipco

Differential Revision: D22883865

fbshipit-source-id: 3699e14775f335620eec28faa9a05c3cc750e1d1
2020-08-06 12:31:57 -07:00
Jun Wu
759f8b35c5 dag: move some IdMap operations to traits
Summary: This will allow different IdMap implementations.

Reviewed By: sfilipco

Differential Revision: D21479016

fbshipit-source-id: 852501896fddcb82624338acd9dceee41150e302
2020-05-11 09:49:57 -07:00
Jun Wu
9e3920ca1c dag: fix benchmarks
Summary: D19559127 forgot those files.

Reviewed By: DurhamG

Differential Revision: D19818715

fbshipit-source-id: 92321492eae89ed9f748800b3bfcc306a54aab20
2020-02-28 09:23:59 -08:00
Jun Wu
64271f24ba dag: move bindag from benches to a separate crate
Summary: This allows bindag to be used outside benches.

Reviewed By: sfilipco

Differential Revision: D19503374

fbshipit-source-id: 131061f7d1d28125875a86afc330dbb9634249cf
2020-01-22 19:30:48 -08:00
Jun Wu
3c5766d59e dag: rename Dag to IdDag
Summary: This is more consistent with the name "NamedDag".

Reviewed By: singhsrb

Differential Revision: D19405472

fbshipit-source-id: f7023307acaf96bf77c9fa9704dcaf6fc59b56f2
2020-01-15 14:02:06 -08:00
Jun Wu
85a89c6f96 dag: add git commit graph as test fixture
Summary:
The git repo has a lot of merges. So it's interesting as a testing graph.
The file was generated by:

    git clone https://github.com/git/git --bare
    hg --config extensions.hggit= clone git.git git-hg
    hg --cwd git-hg debugbindag -r 'all()' -o git.bindag

Reviewed By: DurhamG

Differential Revision: D19411825

fbshipit-source-id: 0fec8a16786dc8e6790986bca5c62a76276aa942
2020-01-15 11:03:52 -08:00
Jun Wu
064068169b dag: rename slice to VertexName
Summary:
Per discussion, we decided to use "VertexName" as the struct name for things
like commit hashes, or the string names in tests (or the Mozilla DAG in tests).
Therefore, introduce a dedicated VertexName type and repalce all callsites to
use it.

`bytes::Bytes` is used so copying the `VertexName` is somewhat considered cheap.

This adds some overhead copying slices (and `Bytes` has some overhead). It
regresses the "building segments" benchmark from 673ms to 773ms, which seems
okay given the cleaner interface.

Reviewed By: markbt

Differential Revision: D19154905

fbshipit-source-id: 4c6d4eca67c11c10ed5f21999ccdc3f1b01695e8
2020-01-08 21:35:28 -08:00
Jun Wu
a1d710fa58 dag: rename GroupId to Group
Summary:
Address review comment in D18640899. This makes the word `id` universally
refer to a same concept within the crate.

Reviewed By: sfilipco

Differential Revision: D18820723

fbshipit-source-id: 6803192db7e1304a72100568f8f29b90f25c7779
2019-12-20 16:14:21 -08:00
Jun Wu
75aff36c7f dag: add group support for IdMap
Summary:
This allows us to allocate Ids for non-master commits in a separate range
so they wouldn't cause fragmentation for commits in the master group.

Reviewed By: sfilipco

Differential Revision: D18640896

fbshipit-source-id: c19c53342583ded8795849584cf5f31bc86b2818
2019-12-04 22:43:23 -08:00
Jun Wu
05157a174a dag: replace u64 with the new Id type
Summary: Migrate the codebase to use the new Id type instead of an alias of u64.

Reviewed By: sfilipco

Differential Revision: D18640898

fbshipit-source-id: 415db9afeda1f8960e18c69e70f53a9eeb63cbbe
2019-12-04 22:43:23 -08:00
David Tolnay
d1d8fb939a Switch from failure::Fail trait to std::error::Error for errors
Summary:
This diff replaces eden's dependencies on failure::Error with anyhow::Error.

Failure's error type requires all errors to have an implementation of failure's own failure::Fail trait in order for cause chains and backtraces to work. The necessary methods for this functionality have made their way into the standard library error trait, so modern error libraries build directly on std::error::Error rather than something like failure::Fail. Once we are no longer tied to failure 0.1's Fail trait, different parts of the codebase will be free to use any std::error::Error-based libraries they like while still working nicely together.

Reviewed By: xavierd

Differential Revision: D18576093

fbshipit-source-id: e2d862b659450f2969520d9b74877913fabb2e5d
2019-11-22 08:53:31 -08:00
David Tolnay
b1793a4416 rust: Rename Fallible<T> to Result<T>
Summary:
This diff is preparation for migrating off of failure::Fail / failure::Error for errors in favor of errors that implement std::error::Error. The Fallible terminology is unique to failure and in non-failure code we should be using Result<T>. To minimize the size of the eventual diff that removes failure, this codemod replaces all use of Fallible with Result by:

- In modules that do not use Result<T, E>, we import `failure::Fallible as Result`;
- In modules that use a mix of Result<T, E> and Fallible<T> (only 5) we define `type Result<T, E = failure::Error> = std::result::Result<T, E>` to allow both Result<T> and Result<T, E> to work simultaneously.

Reviewed By: Imxset21

Differential Revision: D18499758

fbshipit-source-id: 9f5a54c47f81fdeedbc6003cef42a1194eee55bf
2019-11-14 14:11:01 -08:00
Adam Simpkins
ab3a7cb21f Move fb-mercurial sources into an eden/scm subdirectory.
Summary:
In preparation for merging fb-mercurial sources to the Eden repository,
move everything from the top-level directory into an `eden/scm`
subdirectory.
2019-11-13 16:04:48 -08:00