hack-memcache-mysql-web-server

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hack-memcache-mysql-web-server

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Barebones Server in HHVM using Hack . Uses Memcache and MySQL

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# Basic Webserver in Hack (Hacklang)

### Why does this Repo exist ?

I used this repo to learn hack . One of the problems I faced while learning Hack was availaibility of a basic web scaffolding to quickly setup a web server purely in Hack.

### Why do we need a scaffolding or prior art ?

A scaffolding helps a beginner in many ways

- Code Organization
- Have something up and running quicky.
- Saves effort so that people do not need to create a scaffolding repoo everytime.

This repo is meant to address all of these points .

### Where can I read more about the process and design choices ?

I have a [blog post](https://abhikmitra.github.io/blog/hack-php/) detailing the steps and some of my design choices .

### Tell me more.

This repo comes with the following setup

- Completely in Hack
- Request routing Setup 
- Views and Controllers Pattern (Should be pretty easy to grasp for people coming from NodeJs/ASP.NET background) 
- Connection to MySQL
- Connection memcache 
- Separation of API and WebPage Controllers
- VsCode Setup , the folder [/ui-server/.vscode](/ui-server/.vscode) has all the vscode specific configs

The web app has login/signup flow and the session id flow where the sessionId gets stored in memcache and the user details get stored in MySQL. Once logged in , the user lands in homepage which would typically be a react app.

### How do I run this ?

- Open **/ui-server** in VSCode (Do not open the current top level as then Vs Code - hack wont show type errors)
- Of course make sure you have VsCode Hack extension.
- `composer i` to install all packges
- `composer dump-autoload` to autoload all packages
- `hh_client start` make sure hh_client is started so that type hints work in VS Code,
- Make sure you have memcached setup. Here is a [guide](https://gist.github.com/tomysmile/ba6c0ba4488ea51e6423d492985a7953) 
- Have mySQL setup . I have used a free instance in heroku. Feel free to install locally also.
- Change [Constants.js](/ui-server/src/Constants.hack) to reflect the proper connection strings for Memcached and MySql.
- Start the server (make sure the current directory is /ui-server)
- ```hhvm -c config.ini -m server -p 8080```

### How do I debug this ?

Once you have the server up and running, you need to attach your server. Open VsCode and go to the Run pane and click on `HHVM: Attach to the UI Server`

### How do I add a new route ?
Just add a Controller and make sure it or any of its parents implement `IRoutableController` . Once that is done , go to the Run pane and run the `HHVM:Update Router` file. That would regenerate the `AutoGeneratedRouterBase.php` file.

### Are these best practices.
Nope , not even close . I tried to structure it based on what I have seen in otehr stack and these are by no means perfect . Use this as a scaffolding if you are new to Hack .

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