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sapling/eden/scm/lib
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Xavier Deguillard 21cd242dcf revisionstore: add a fallback remote lfs store 
Summary:
If the LFS server is down, we are going to retry fetching filenode from the
Mercurial server directly, who is expected to not return a pointer.

Previously, this was achieved by adding a hack into `get_missing`, but since
the function is no longer called during prefetch calls, we cannot rely on it
anymore. Instead, we can wrap the regular remote store and translate all the
StoreKey::Content onto their corresponding hgid keys.

Reviewed By: DurhamG

Differential Revision: D22565604

fbshipit-source-id: 2532a1fc3dfd9ba5600957ed5cf905255cb5b3fd
2020-07-28 10:51:38 -07:00
..
auth auth: allow specifying a CA certificate bundle 2020-07-16 19:48:36 -07:00
backingstore revisionstore: return missing keys from prefetch 2020-07-28 10:51:38 -07:00
blackbox blackbox: address clippy warnings 2020-03-18 10:16:39 -07:00
bookmarkstore types: address clippy warnings 2020-03-16 14:58:21 -07:00
cdatapack cmake: always build support for the EdenSCM backing store 2019-11-22 13:00:07 -08:00
clib cmake: always build support for the EdenSCM backing store 2019-11-22 13:00:07 -08:00
clidispatch debug: introduce error classification and metadata propagation 2020-07-15 10:03:10 -07:00
cliparser debug: introduce error classification and metadata propagation 2020-07-15 10:03:10 -07:00
commitcloudsubscriber rust/reindeer: update eventsource to 0.5 2020-07-08 04:15:21 -07:00
commitstore/bench-serialize cargo: bump serde_cbor to 0.11 2020-02-21 14:08:43 -08:00
configparser configs: switch to auditing the specific list of known problematic configs 2020-07-13 08:53:18 -07:00
cpython-ext debug: introduce binding layer for propagating error metadata to Python 2020-07-16 19:30:00 -07:00
dag revlogindex: is_ancestor(x, x) should return true 2020-07-06 15:50:59 -07:00
dev-logger dev-logger: a simple library to enable env_logger for testing 2020-03-10 14:16:38 -07:00
drawdag Use types from the oxidized_by_ref crate instead of the oxidized crate for to_oxidized 2020-05-28 22:19:13 -07:00
dynamicconfig configs: add support for hostname-based dynamicconfigs 2020-07-16 09:07:54 -07:00
edenapi edenapi: allow sending extra HTTP headers with each request 2020-07-17 17:33:26 -07:00
edenfs-client eden/scm: move third-party facebook crates dependencies to a separate folder 2020-07-02 03:35:02 -07:00
encoding Move fb-mercurial sources into an eden/scm subdirectory. 2019-11-13 16:04:48 -08:00
fsinfo fsinfo: return an enum instead of a String 2020-03-23 14:29:10 -07:00
hgcommands revisionstore: add a new StoreResult type 2020-07-24 10:45:40 -07:00
hgcommits hgcommits: implement strip_commits for testing 2020-07-17 22:23:05 -07:00
hgtime hgtime: address clippy warnings 2020-03-16 14:58:22 -07:00
http_client http_client: update client description 2020-07-17 18:49:01 -07:00
indexedlog indexedlog: remove chown feature 2020-04-27 15:47:59 -07:00
linelog Move fb-mercurial sources into an eden/scm subdirectory. 2019-11-13 16:04:48 -08:00
lz4-pyframe eden: remove unused Rust dependencies 2020-06-17 17:55:03 -07:00
manifest manifest: add testutil in core package 2020-01-14 11:49:52 -08:00
manifest-tree Deprecate rust-crypto in manifest-tree 2020-03-23 11:15:58 -07:00
metalog metalog: implement compaction api 2020-06-26 09:58:58 -07:00
mincode Move fb-mercurial sources into an eden/scm subdirectory. 2019-11-13 16:04:48 -08:00
minibench mononoke/mercurial: make revlog crate OSS buildable 2020-04-08 09:49:11 -07:00
minibytes minibytes: address clippy warnings 2020-03-16 14:58:22 -07:00
mpatch Move fb-mercurial sources into an eden/scm subdirectory. 2019-11-13 16:04:48 -08:00
mpatch-sys use absolute includes for the native cext modules 2020-02-19 13:05:06 -08:00
mutationstore mutationstore: copy entries automatically on flush 2020-07-02 13:22:34 -07:00
nodemap indexedlog: replace Log's dir with a new GenericPath type 2020-01-17 03:57:59 -08:00
pathmatcher Replace whitelist/blacklist term 2020-06-15 15:01:19 -07:00
procinfo procinfo: address compiler warning 2020-03-04 09:49:14 -08:00
radixbuf revlogindex: do not raise errors on ambiguous prefix 2020-07-06 15:50:58 -07:00
renderdag renderdag: make render API accept trait objects 2020-06-03 13:26:27 -07:00
revisionstore revisionstore: add a fallback remote lfs store 2020-07-28 10:51:38 -07:00
revlogindex revlogindex: update nodemap even if it's non-symlink and mmaped on Windows 2020-07-08 11:31:21 -07:00
taggederror taggederror: introduce bail macro replacement which allows tagging 2020-07-22 15:37:14 -07:00
third-party xdiff: renamed third-party xdiff functions 2020-07-14 03:46:04 -07:00
thrift-types changelog: use Rust RevlogIndex for partialmatch 2020-07-17 22:23:04 -07:00
tracing-collector tracing-collector: add is_event to TreeSpan 2020-03-12 12:19:38 -07:00
treestate filesystem: add filesystem walking to PendingChanges 2020-04-24 13:58:53 -07:00
types edenapi_types: improve DataEntry hash check API 2020-07-06 14:47:48 -07:00
util revlogindex: update nodemap even if it's non-symlink and mmaped on Windows 2020-07-08 11:31:21 -07:00
version version: a Rust crate providing version information 2020-05-18 09:00:40 -07:00
vfs filesystem: add treestate walking logic 2020-04-24 13:58:53 -07:00
vlqencoding mutationstore: move MutationEntry type to types crate 2020-04-23 08:58:10 -07:00
workingcopy filesystem: add treestate walking logic 2020-04-24 13:58:53 -07:00
xdiff xdiff: renamed third-party xdiff functions 2020-07-09 01:20:32 -07:00
xdiff-sys Update libra to latest revision 2020-07-16 21:10:44 -07:00
zstdelta Move fb-mercurial sources into an eden/scm subdirectory. 2019-11-13 16:04:48 -08:00
zstore zstore: add simple caching 2020-05-01 14:24:52 -07:00
CMakeLists.txt revisionstore: remove c_api 2020-07-27 23:24:03 -07:00
README.md Move fb-mercurial sources into an eden/scm subdirectory. 2019-11-13 16:04:48 -08:00

README.md

lib

Any native code (C/C++/Rust) that Mercurial (either core or extensions) depends on should go here. Python code, or native code that depends on Python code (e.g. #include <Python.h> or use cpython) is disallowed.

As we start to convert more of Mercurial into Rust, and write new paths entrirely in native code, we'll want to limit our dependency on Python, which is why this barrier exists.

See also hgext/extlib/README.md, mercurial/cext/README.mb.

How do I choose between lib and extlib (and cext)?

If your code is native and doesn't depend on Python (awesome!), it goes here.

Otherwise, put it in hgext/extlib (if it's only used by extensions) or mercurial/cext (if it's used by extensions or core).