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This is the engine behind all code inclusion in the documentation markdown files located in ariatemplates/usermanual.

This nodejs application is managing 3 different services. All these services are using a Github repository as source, in our case this repository is ariatemplates/documentation-code.


    code is in charge of extracting a file, caching it and returning an html compliant highlighted version of it.


    samples is in charge of extracting a complete sample and launching it in an iframe through the ariatemplate sample viewer.


    snippets is in charge of extracting a source file, caching it and return a self executable piece of javascript that will embed an highlighted version of it directly in an html page.

How to quickly start snippets server locally on localhost:3000

If you cloned everything from github to the same folder and you want to work with dev files:

node server.js --dp ../documentation-code/ --fp ../ariatemplates/src/ --ff bootstrap.js

How to use it


This service is private. It is used internally by the sample viewer, in order to properly highlight the source code files.


To insert a sample in your markdown file you just need to embed it in a iframe.

<iframe class='samples' src='/%SNIPPETS_SERVER_URL%/samples/'></iframe>

Using the /%SNIPPETS_SERVER_URL%/ prefix inside the URL, you'll be able to use and test locally your sample before pushing it and once you have pushed, the application will automatically update the url, using the production one.


To insert a snippet in your markdown file you just need to write a script tag.

<script src='/%SNIPPETS_SERVER_URL%/snippets/'></script>

Several options could be specified directly through the given url to adjust the code:

  • lang to specify the language to be used by the highlighting library.
  • outdent to specify a number of character to remove at the beginning of each line to outdent the code.
  • tag to specify a tag name to be used to extract only a piece of code from the source.

This example will embed the file snippets/core/beans/SimpleBean.js located in the repository ariatemplates/documentation-code hosted on

How to create a new snippet/sample or update an existing one

Any new file, or changes to an existing one should be done in ariatemplates/documentation-code repository.

  • Creating a new snippet

    First thing is to check that there is not any existing snippet corresponding to the one you are about to create.

    If not, just create the new file in the correct location (in the snippets folder) trying to match at most the category of your new piece of code (core, advanced...).

    Once your new file is created, simply include it in your markdown file using the same script inclusion syntax that the one described above.

  • Creating a new sample

    To create a new sample, you'll have to create a bunch of new files. A sample is composed of several source files and a desciptor file.

    First create a new folder in the proper location that suits your needs. Your folder has to be located under the samples folder.

    Then create the desciptor file:

    $ touch sample.yaml

    Describe your sample:

    title: Automatic Refresh
    template: samples.templates.refresh.automatic.AutomaticRefresh
    description: It shows how the Automatic Refresh works in aria templates.
    - AutomaticRefresh.tpl
    - AutomaticRefreshScript.js
    - RefreshCSS.tpl.css
        - name: 'England'
          score: 0
        - name: 'France'
          score: 0

    Push the code! You're done, you can use it in your markdown file using the same iframe inclusion syntax that the one described above.

  • Updating an existing snippet

    Let's suppose you want to update a snippet because of a change in the api. Because we are maintaining several different versions of the documentation /!\ don't edit the original one !! /!\ .

    Instead just create a new version of this snippets, in the same location with a new name (the simplest new name is to use the same one with a _1 suffix.

    snippets/core/beans/SimpleBean.js => snippets/core/beans/SimpleBean_1.js

    Finally simply reference the new version of the snippet in your markdown file using the same script inclusion syntax that the one described above.

How to manage it on the server itself

The nodejs application run on port 3000 on the server. Then it's proxied by apache to the virtual host

Location on the server

The application is located in the folder /srv/www/


In case the script would stop due to an unhandled exception, it will be restarted automagically by Upstart. Same story in case the server reboots.

A configuration file has been setup in the system with the following name: /etc/init/snippets3000.conf

You can retrieve information of the running deamon at any time from the command line with:

$ sudo status snippets3000

The deamon can also be started/stopped with the according commands:

$ sudo start snippets3000
$ sudo stop snippets3000


The application is logging exception that could occur. To see the log, use the following command:

$ tail -200 /srv/www/