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Wez Furlong 749d6a25ca fbcode_builder: getdeps: add SimpleShipitTransformer fetcher 
Summary:
This fetcher knows how to transform a 1st party project
from fbsource into approximately the same shape as ShipIt produces
for the github repo mirrors.  It does this by reading shipit
mapping information from the manifest file for the project.

Since this fetcher uses data in the manifest and is implemented
directly in the getdeps codebase, it is suitable for iterating
on the opensource builds directly out of fbsource on both devservers
and laptops inside FB.

Reviewed By: simpkins

Differential Revision: D14691012

fbshipit-source-id: 05f68a7be64a2e465937b24b8825d25d3348ed13
2019-05-03 15:59:40 -07:00
build fbcode_builder: getdeps: add SimpleShipitTransformer fetcher 2019-05-03 15:59:40 -07:00
CMake require treemanifest support 2019-05-02 12:35:21 -07:00
common update copyright headers in some of the common/ stub headers 2019-04-26 14:38:28 -07:00
eden stop calling hg debugedenimporthelper with an extra repo argument 2019-05-02 20:42:35 -07:00
.gitignore eden: wire up mac contbuild 2019-02-05 21:52:30 -08:00
.travis.yml add fbcode_builder sources 2019-04-26 11:31:58 -07:00
CMakeLists.txt eden: cmake: probe for osxfuse headers 2019-03-29 15:02:04 -07:00
CODE_OF_CONDUCT.md Add CODE_OF_CONDUCT.md and reference the LICENSE file in README.md 2019-04-26 14:38:27 -07:00
CONTRIBUTING.md Initial commit 2016-05-12 14:09:13 -07:00
getdeps.py eden: getdeps: skip building rsocket tests 2019-02-19 14:53:22 -08:00
LICENSE Initial commit 2016-05-12 14:09:13 -07:00
make-client.py Isolate low-level overlay logic into FsOverlay 2019-03-11 17:30:21 -07:00
PATENTS Initial commit 2016-05-12 14:09:13 -07:00
README.md Add CODE_OF_CONDUCT.md and reference the LICENSE file in README.md 2019-04-26 14:38:27 -07:00

README.md

EdenFS is a FUSE virtual filesystem for source control repositories.

EdenFS speeds up operations in large repositories by only populating working directory files on demand, as they are accessed. This makes operations like checkout much faster, in exchange for a small performance hit when first accessing new files. This is quite beneficial in large repositories where developers often only work with a small subset of the repository at a time.

EdenFS has similar performance advantages to using sparse checkouts, but a much better user experience. Unlike with sparse checkouts, EdenFS does not require manually curating the list of files to check out, and users can transparently access any file without needing to update the profile.

EdenFS also keeps track of which files have been modified, allowing very efficient status queries that do not need to scan the working directory. The filesystem monitoring tool Watchman also integrates with EdenFS, allowing it to more efficiently track updates to the filesystem.

Building EdenFS

EdenFS currently only builds on Linux. We have primarily tested building it on Ubuntu 18.04.

TL;DR

[eden]$ ./getdeps.py --system-deps
[eden]$ mkdir _build && cd _build
[eden/_build]$ cmake ..
[eden/_build]$ make

Dependencies

EdenFS depends on several other third-party projects. Some of these are commonly available as part of most Linux distributions, while others need to be downloaded and built from GitHub.

The getdeps.py script can be used to help download and build EdenFS's dependencies.

Operating System Dependencies

Running getdeps.py with --system-deps will make it install third-party dependencies available from your operating system's package management system. Without this argument it assumes you already have correct OS dependencies installed, and it only updates and builds dependencies that must be compiled from source.

GitHub Dependencies

By default getdeps.py will check out third-party dependencies into the eden/external/ directory, then build and install them into eden/external/install/

If repositories for some of the dependencies are already present in eden/external/ getdeps.py does not automatically fetch the latest upstream changes from GitHub. You can explicitly run ./getdeps.py --update if you want it to fetch the latest updates for each dependency and rebuild them from scratch.

License

See LICENSE.