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123 lines
4.7 KiB
Markdown
123 lines
4.7 KiB
Markdown
overleaf/clsi
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===============
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A web api for compiling LaTeX documents in the cloud
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The Common LaTeX Service Interface (CLSI) provides a RESTful interface to traditional LaTeX tools (or, more generally, any command line tool for composing marked-up documents into a display format such as PDF or HTML). The CLSI listens on the following ports by default:
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* TCP/3009 - the RESTful interface
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* TCP/3048 - reports load information
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* TCP/3049 - HTTP interface to control the CLSI service
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These defaults can be modified in `config/settings.defaults.coffee`.
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The provided `Dockerfile` builds a docker image which has the docker command line tools installed. The configuration in `docker-compose-config.yml` mounts the docker socket, in order that the CLSI container can talk to the docker host it is running in. This allows it to spin up `sibling containers` running an image with a TeX distribution installed to perform the actual compiles.
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The CLSI can be configured through the following environment variables:
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* `DOCKER_RUNNER` - Set to true to use sibling containers
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* `SYNCTEX_BIN_HOST_PATH` - Path to SyncTeX binary
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* `COMPILES_HOST_DIR` - Working directory for LaTeX compiles
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* `SQLITE_PATH` - Path to SQLite database
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* `TEXLIVE_IMAGE` - The TEXLIVE docker image to use for sibling containers, e.g. `gcr.io/overleaf-ops/texlive-full:2017.1`
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* `TEXLIVE_IMAGE_USER` - When using sibling containers, the user to run as in the TEXLIVE image. Defaults to `tex`
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* `TEX_LIVE_IMAGE_NAME_OVERRIDE` - The name of the registry for the docker image e.g. `gcr.io/overleaf-ops`
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* `FILESTORE_DOMAIN_OVERRIDE` - The url for the filestore service e.g.`http://$FILESTORE_HOST:3009`
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* `STATSD_HOST` - The address of the Statsd service (used by the metrics module)
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* `LISTEN_ADDRESS` - The address for the RESTful service to listen on. Set to `0.0.0.0` to listen on all network interfaces
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* `SMOKE_TEST` - Whether to run smoke tests
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Installation
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------------
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The CLSI can be installed and set up as part of the entire [Overleaf stack](https://github.com/overleaf/overleaf) (complete with front end editor and document storage), or it can be run as a standalone service. To run is as a standalone service, first checkout this repository:
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$ git clone git@github.com:overleaf/clsi.git
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Then install the require npm modules:
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$ npm install
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Then compile the coffee script source files:
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$ grunt install
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Finally, (after configuring your local database - see the Config section), run the CLSI service:
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$ grunt run
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The CLSI should then be running at http://localhost:3013.
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Config
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------
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You will need to set up a database in mysql to use with the CLSI, and then fill in the database name, username and password in the config file at `config/settings.development.coffee`.
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API
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---
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The CLSI is based on a JSON API.
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#### Example Request
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(Note that valid JSON should not contain any comments like the example below).
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POST /project/<project-id>/compile
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```javascript
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{
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"compile": {
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"options": {
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// Which compiler to use. Can be latex, pdflatex, xelatex or lualatex
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"compiler": "lualatex",
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// How many seconds to wait before killing the process. Default is 60.
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"timeout": 40
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},
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// The main file to run LaTeX on
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"rootResourcePath": "main.tex",
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// An array of files to include in the compilation. May have either the content
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// passed directly, or a URL where it can be downloaded.
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"resources": [{
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"path": "main.tex",
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"content": "\\documentclass{article}\n\\begin{document}\nHello World\n\\end{document}"
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}, {
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"path": "image.png",
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"url": "www.example.com/image.png",
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"modified": 123456789 // Unix time since epoch
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}]
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}
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}
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```
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With `curl`, if you place the above json in a file called `data.json`, the request would look like this:
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``` shell
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$ curl -X POST -d @data.json localhost:3013/project/<id>/compile
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```
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You can specify any project-id in the URL, and the files and LaTeX environment will be persisted between requests.
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URLs will be downloaded and cached until provided with a more recent modified date.
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#### Example Response
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```javascript
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{
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"compile": {
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"status": "success",
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"outputFiles": [{
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"type": "pdf",
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"url": "http://localhost:3013/project/<project-id>/output/output.pdf"
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}, {
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"type": "log",
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"url": "http://localhost:3013/project/<project-id>/output/output.log"
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}]
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}
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}
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```
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License
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-------
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The code in this repository is released under the GNU AFFERO GENERAL PUBLIC LICENSE, version 3. A copy can be found in the `LICENSE` file.
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Copyright (c) Overleaf, 2014-2019.
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