Summary:
We had two spots that loaded system and user configs, one in the
pyconfigparser layer, and one in the pure rust config layer. In an upcoming diff
I'd like to move dynamicconfig loading down into the pure rust layer, so let's
unify these.
Reviewed By: quark-zju
Differential Revision: D22585554
fbshipit-source-id: 0cea7801ae1d5a3a3c12b80ee23b37f9e690e2bc
Summary: This allows callsites to get access to the storage.
Reviewed By: DurhamG
Differential Revision: D22992104
fbshipit-source-id: c72fa313be1468170c9728d3856f822bb6385dc8
Summary:
Introduce taggederror-util, which provides a new trait `AnyhowEdenExt`, which provides a method `eden_metadata` for anyhow errors and results. This method works much like `AnyhowExt::common_metadata`, but additionally supports extracting default error metadata from known `Tagged` types which are listed explicitly in the method implementation.
Extend `FilteredAnyhow` to support a configuration "metadata function", which allows swapping out `eden_metadata` for the standard `common_metadata`.
Modify Rust dispatch and Python bindings to use `AnyhowEdenExt` for metadata extraction and printing.
Modify `intentional_error` to rely on `AnyhowEdenExt` for tagging (removes `.tagged` call, no tags will be visible if `AnyhowEdenExt` is not used).
Reviewed By: DurhamG
Differential Revision: D22927203
fbshipit-source-id: 04b36fdfaa24af591118acb9e418d1ed7ae33f91
Summary:
Introduce new rust library, taggederror, which contains utilities for attaching metadata to errors. The library provides two main methods for attaching metadata to an error, the TaggedError wrapper type, and the AnyhowExt trait methods. Provides a struct, CommonMetadata, which contains all the metadata types introduced by taggederror (fault, transience, category, and typename), which can also be attached individually (and the same pattern can be used to attach other metadata).
Introduce a new native rust command, debugthrowrustexception, which causes the command to return an error, with some attached metadata.
Modify hg rust native command dispatch error handling to use debug formatter to print anyhow::Error errors. This will print out the source chain, contexts, and backtrace if available, which will cause the metadata we attach as a wrapper error or context to be printed.
Reviewed By: DurhamG
Differential Revision: D22420941
fbshipit-source-id: d38c5a10b686d86b69a2c0a19f5bcbf4ca24dff6
Summary:
With the internal streampager, progress bars must be sent on a separate stream so that
streampager can render them correctly.
Reviewed By: quark-zju
Differential Revision: D21906173
fbshipit-source-id: eb41b0bf22807d9cae518b3f676996ab1c642c6e
Summary: Upgrade the internal streampager to the latest version, which includes line wrapping.
Reviewed By: quark-zju
Differential Revision: D21906172
fbshipit-source-id: 1bc63723f55ac115090e7ae0a2541158863056b9
Summary:
Instead of trying to maintain two hgrc.dynamic's for shared repositories,
let's just always use the one in the shared repo. In the long term we may be
able to get rid of the working-copy-specific hgrc entirely.
This does remove the ability to dynamically configure individual working copies.
That could be useful in cases where we have both eden and non-eden pointed at
the same repository, but I don't think we rely on this at the moment.
Reviewed By: quark-zju
Differential Revision: D21333564
fbshipit-source-id: c1fb86af183ec6dc5d973cf45d71419bda5514fb
Summary:
We removed the feature in D20704618 and it does not cause complaints.
Let's remove the code supporting the chown feature.
Reviewed By: DurhamG
Differential Revision: D21170307
fbshipit-source-id: c845016219e8c681930bb1780b94e6d31ca99730
Summary:
This allows the streampager to be configured via hgrc files.
Default are picked so the behavior is closer to the current default pager
(`less -FRX`).
Reviewed By: DurhamG
Differential Revision: D20902034
fbshipit-source-id: 994ab963ceace02eeb1d18cfa5768e411ca3610b
Summary: This makes it work with chg, since `/dev/tty` is not available for chg.
Reviewed By: DurhamG
Differential Revision: D20936967
fbshipit-source-id: f3ded1aa5552f321ff7043a039f4e35a88160a51
Summary:
We want Mercurial to become more responsible for it's own
configuration, instead of relying on chef and other means. To do so, let's
introduce a new `hg debugdynamicconfig` that can generate dynamic configs for
a given repository based on various states, like what tier it's in or what shard
that machine is in. By default it generates to '.hg/hgrc.dynamic' for the given
repository.
Currently it just sets the hostgroup config.
Future diffs will make Mercurial consume this config, and possibly have Mercurial
call this command asynchronously when it notices the file is out-of-date.
Reviewed By: quark-zju
Differential Revision: D20828132
fbshipit-source-id: 6f5bf749f5b04e0a5989d6dc19ee788c2e47f88f
Summary:
This exposes the Rust's pager to Python. Right now it's using the system
terminal.
Reviewed By: DurhamG
Differential Revision: D20887174
fbshipit-source-id: c72f31a58475e76f8097c515dd29f911d2ac4df1
Summary:
Implement the core API to start pager in native Rust. For now it is only
enabled for the entire command if `--pager=always` is set.
Reviewed By: DurhamG
Differential Revision: D20849644
fbshipit-source-id: 860b4e18d841da607864c3447d78dbac126f5f18
Summary:
This is the start of migrating blackbox events to tracing events. The
motivation is to have a single data source for log processing (for simplicity)
and the tracing data seems a better fit, since it can represent a tree of
spans, instead of just a flat list. Eventually blackbox might be mostly
a wrapper for tracing data, with some minimal support for logging some indexed
events.
Reviewed By: DurhamG
Differential Revision: D19797710
fbshipit-source-id: 034f17fb5552242b60e759559a202fd26061f1f1
Summary:
Since configparser enforces utf-8 config files (because pest wants Rust strings),
let's migrate from Bytes to Text to remove extra encoding conversions.
Previously this was blocked by the lack of ref-counted text (since the "source"
of each config location is the entire config file). Now minibytes provides Text
so we can use it.
This unfortunately requires dependent code to be updated. The pyconfigparser
interface is in theory wrong - it shouldn't return utf-8 bytes but
local-encoded bytes. I think it's cleaner to make pyconfigparser unaware of
HGENCODING, so I changed pyconfigparser to use unicode, and add compatibility
layer in uiconfig.py.
This also fixes non-ascii encoding issues on user name (especially on Windows).
The hgrc config file should be in utf-8 and the config parser returns explicit
unicode types, and Python code round-trip them with local encodings.
Reviewed By: markbt
Differential Revision: D20432938
fbshipit-source-id: b1359429b8f1c133ab2d6b2deea6048377dfeca1
Summary:
Instead of returning `anyhow::Error` wrapping an `ErrorKind` enum
from each Thrift client method, just return an error type specific
to that method. This will make error handling simpler and less
error-prone by removing the need to downcast the returned error.
This diff also removes the `ErrorKind` enums so that we can be sure
that there are no leftover places trying to downcast to them.
(Note: this ignores all push blocking failures!)
Reviewed By: dtolnay
Differential Revision: D20260398
fbshipit-source-id: f0dd96a7b83dd49f6b30948660456539012f82e6
Summary:
Using `if cfg!` instead of `#[cfg]` allows for the compiler to understand
that the arguments aren't unused, and silence the warnings.
Reviewed By: quark-zju
Differential Revision: D20242280
fbshipit-source-id: 332dfe17b3a80a1096d15c91c9fb6644bd10e0cd
Summary:
The change is in theory not necessary. However it improves the reliability on
OS crashes a bit, and can potentially workaround some bugs in filesystems
(as we saw in production where the atomic-written files are empty and the
system didn't crash).
The idea is, the `symlink` syscall does the file creation and "content" writing
together, while there is no way to create a file and write specific content
in one syscall. Note that the C symlink call uses 0-terminated string, and
the Rust stdlib exports it as accepting `Path`. To be safe, we encode binary
or non-utf8 content using `hex`.
For downgrade safety, the write path does not use symlink by default unless
format.use-symlink-atomic-write is set to true. This makes downgrade possible:
the read path is rolled out first, then we can turn on and off the write path.
The indexedlog Rust unit tests and test-doctor.t are migrated to use the new
symlink code paths.
Reviewed By: DurhamG
Differential Revision: D20153864
fbshipit-source-id: c31bd4287a8d29575180fbcf7227d2b04c4c1252
Summary:
The bytes 0.5 is a depencency of newer tokio, it's also newer, and thus better.
Staying on 0.4 means that copies between Bytes 0.4 and 0.5 need to be done,
this will be especially bad in the LFS code since 10+MB buffer will have to be
copied...
One main API change is for the configparser. The code used to take Into<Bytes>
for the keys, I switched it to AsRef<[u8]>.
For hg_memcache_client, an extra copy is performed to build a Delta, since this
code uses an old tokio, and is being replaced right now, the effort of
switching to a new tokio and new bytes was not deemed worth it, the copy will
do for now.
Reviewed By: dtolnay
Differential Revision: D20043137
fbshipit-source-id: 395bfc3749a3b1bdfea652262019ac6a086e61e0
Summary:
In the cpython bindings, the Rust String can take both PyBytes and PyUnicode
strings, which is perfect for Python3 compatibility as string literals are
PyBytes in Python2 and PyUnicode in Python3. The return values are kept as
Bytes for now as changing this is a much larger change in itself.
Other approaches tried:
- Using PyUnicode as input/output: an extremely large codemod had to be done,
with very little benefits
- Using String as output: since we do have some configs that are unicode, on
the Python side, the output might either be bytestrings or unicode, leading
to weird bugs.
Reviewed By: DurhamG
Differential Revision: D18650466
fbshipit-source-id: aebdf30590dcae40b7df2787e5ece88e2ec9395c
Summary: The rust telemetry wrapper and the python code were not in sync in how they presented errors to the user on failure. This makes them identical in message and error code (however the "abort" from python is red in color).
Reviewed By: quark-zju
Differential Revision: D19313848
fbshipit-source-id: d5b95e8d5130f20fc85c6664933ee18702f7cc5e
Summary: Make `hg status` use the EdenFS Thrift path, similar to the telemetry wrapper.
Reviewed By: DurhamG
Differential Revision: D19325641
fbshipit-source-id: 14777a252d7cb433316511a2a1f1a6649e9cb020
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
Summary:
This diff replaces code of the form:
```
use failure::Fail;
#[derive(Fail, Debug)]
pub enum ErrorKind {
#[fail(display = "something failed {} times", _0)]
Failed(usize),
}
```
with:
```
use thiserror::Error;
#[derive(Error, Debug)]
pub enum ErrorKind {
#[error("something failed {0} times")]
Failed(usize),
}
```
The former emits an implementation of failure 0.1's `Fail` trait while the latter emits an impl of `std::error::Error`. Failure provides a blanket impl of `Fail` for any type that implements `Error`, so these `Error` impls are strictly more general. Each of these error types will continue to have exactly the same `Fail` impl that it did before this change, but now also has the appropriate `std::error::Error` impl which sets us up for dropping our various dependencies on `Fail` throughout the codebase.
Reviewed By: Imxset21
Differential Revision: D18523700
fbshipit-source-id: 0e43b10d5dfa79820663212391ecbf4aeaac2d41
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
Summary:
In preparation for merging fb-mercurial sources to the Eden repository,
move everything from the top-level directory into an `eden/scm`
subdirectory.
