kumascript

What's Deployed

Overview

The KumaScript service takes requests to render raw documents (documents that may contain one or more embedded macro calls), and responds with a fully-rendered document (a document where each of the embedded macros has been executed and replaced inline with its output). The requests can be either via GET, with the full document path in the URL like GET /docs/en-US/JavaScript/Foo, or via POST /docs, with the actual raw content of the document included in the body of the POST. Here's an overview of a GET request:

NOTE: If you'd like to update the diagram above, import overview.xml into https://www.draw.io, make your changes, and export overview.png.

Updating Macros

The actual macros available and used are under the macros directory of this repository. For example, if your MDN document makes one or more calls to the CSSRef macro (or cssref, since macro calls are case insensitive), the file macros/CSSRef.ejs is the actual macro that will be executed.

In the past, these macros were stored within a database, and read, updated, or deleted via MDN (the Kuma service). Since this is no longer true, when you want to update one or more of these macros, you no longer do that via MDN, but instead via this GitHub repository (see https://guides.github.com/activities/contributing-to-open-source/). A quick summary:

Fork the Mozilla kumascript repository
Create a branch for your changes
Make and test your changes
- First you will need to install Docker and clone the Mozilla kuma repository. See https://kuma.readthedocs.io/en/latest/installation.html for detailed instructions on how to do this. Make sure you follow the instructions completely (most likely you will want to install a sample database as well).
- Go to the kumascript sub-directory within your cloned kuma repository. This is a git submodule that currently points to the Mozilla kumascript repository. Reconfigure this git submodule to point to your forked repository from step 1, and your new branch from step 2.
```
git remote set-url origin <URL-TO-YOUR-FORKED-REPO-FROM-STEP-1>
git fetch origin <BRANCH-NAME-FROM-STEP-2>
git checkout <BRANCH-NAME-FROM-STEP-2>
```
- Now you are ready to add, modify, and/or delete any macro (or other) files, and make commits. When you have made your changes and are ready for testing, you will want to run your local development version of MDN:
```
cd ..
docker-compose build
docker-compose up -d
cd kumascript
```
- If everything is OK, you can point your browser to http://localhost:8000, login, create a new document that uses your new or modified macro(s), and test that it renders correctly.
- Run the macro linter to check for syntax errors:
```
make lint-macros
```
Open a pull request to merge your branch on your forked repository into the main Mozilla kumascript repository

Your pull request will be reviewed by one or more members of the MDN team, and if accepted, your changes will be merged into the master branch and scheduled for release to production.

Updating the Dockerfile and/or package.json file

If you update either one or both of these files, you'll need to do a little more before you run your local development version of MDN.

If you modified the package.json file, particularly if you modified the version of node or the dependencies section, replace npm-shrinkwrap.json with one that has no version information:
```
echo '{}' > npm-shrinkwrap.json
```
When you have made your changes and are ready for testing, you will first need to create a new KumaScript docker image as follows (assuming you are in the kumascript sub-directory):
```
cd ..; KS_VERSION=latest make build-kumascript; cd kumascript
```
The last line of output from your make build-kumascript command should look something like this:
```
Successfully built 48ddc354b3f4
Successfully tagged quay.io/mozmar/kumascript:latest
```
Test out the changes, and repeat building the image if unhappy:
```
VERSION=latest make test
VERSION=latest make lint
```
If you modified the package.json file, create a new npm-shrinkwrap.json:
```
VERSION=latest make shrinkwrap
```
Commit the new npm-shrinkwrap.json file.
(Optional) You can use your built image as the kumascript image in the MDN development environment, or you can remove it. To remove your local built image, run one of the following:
```
docker rmi quay.io/mozmar/kumascript:latest  # Remove without replacing
docker pull quay.io/mozmar/kumascript:latest # or replace with server's version
```

Setup (Docker)

Install Docker

Development (Docker)

To build a Docker image (you will need to do this initially as well as after every git commit):
- cd ..; make build-kumascript; cd kumascript
To run the platform tests:
- make test
To run the macro tests:
- make test-macros
To check your code (using JSHint):
- make lint
To check for JavaScript syntax errors within the EJS macros (using ejslint) and JSON syntax errors within the JSON data files (using jsonlint-cli):
- make lint-macros
To run the service:
- make run

Setup (Standalone)

Install Node.js 8.x
Install the dependencies:
- npm install

Development (Standalone)

To run the service:
- node run.js
To run tests:
- ./node_modules/.bin/mocha tests
To check code quality:
- ./node_modules/.bin/jshint --show-non-errors lib tests
  - This will make a racket if it hits parser.js
  - TODO: Ignore this file.
To generate document macro parser (optional):
- ./node_modules/.bin/pegjs lib/kumascript/parser.pegjs
  - This is not required in dev, but should be done for production.
  - If parser.js is missing, the parser will be built on the fly.

On OS X, kicker is handy for auto-running tests and lint on file changes:

kicker -e'./node_modules/.bin/jshint lib tests' \
       -e'./node_modules/.bin/mocha tests' \
       --no-growl \
       lib tests

License

tkadlec/kumascript

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