cranlike v0.17.10
CRANLIKE
High-performance R package server
Description
cranlike is a package server providing a simple API for storing R packages and hosting cran-like repositories.
Packages are stored in the repository of a particular user or
organization, and the server automatically generates the required
repository index files from the database.
This allows R users to install packages from a particular author or
organization using only the repo parameter in install.packages()
.
The implementation is designed to be fast and extensible, with the potential expose additional filters or services, and scale up to large repositories.
SYNOPSIS
The /api
endpoint exposes a simple REST api to store R packages. Here <type>
must be one of src
, win
or mac
.
GET,POST,DELETE
/api/<user>/<package>/<version>/<type>
The /repos
endpoint exposes the CRAN-like directory structure and package index files for a given user. The R user can simply set the repos
parameter in install.packages()
or available.packages()
:
GET
/repos/<user>/src/contrib
/repos/<user>/bin/windows/contrib
/repos/<user>/bin/macosx/contrib/
For example the R user would use:
available.packages("http://myserver.com/repos/jeroen")
install.packages("curl", repos = "http://myserver.com/repos/jeroen")
Running the server
The easiest way to start your a server is to clone the this and run docker compose:
docker-compose up
Alternatively if you locally have mongodb
and nodejs
installed you can use:
./run-local.sh
Debugging the database
All data is stored in two mongodb collections:
- The
packages
collection incranlike
stores description fields for each package, including anMD5sum
field that has a unique hash of the file. - The gridfs
files
collection stores the package blobs, where the primary_id
is the md5 of the file.
We don't store raw files on disk. To read raw data from the db in R you can use mongolite
package:
library(mongolite)
packages <- mongolite::mongo(db = 'cranlike', collection = 'packages',
url = "mongodb://root:example@localhost")
packages$find()
To inspect the table with the files:
bucket <- mongolite::gridfs(db = 'cranlike', prefix = 'files',
url = "mongodb://root:example@localhost")
bucket$find()
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