diagram.txt

AAA
AAA is a socket client
Goals:
- Request a page pre-rendering, with optional caching support
- Architecture independant - only need a socket client

Steps:
1- Get ready for a URL to render, and optionally a HTML rendered content
2- Ask Cache if te page should be pre-rendered and if yes, if the page is already cached
3 -
    case : no need to prerender
        -> END
    case : already rendered and cached
        -> END
    case : none of the above
        -> ASK CCC for a pre-rendered page


Communicate with: Cache and CCC



Cache
Cache is a socket server
Goals: Helps AAA dermine what to do next

Steps:

1- check if the page shold be pre-rendered or not against config regex rules
2- check if the page is already cached
3- Send back 1&2 result to AAA

Communicate with : AAA


CCC

CCC is TWO socket server
    SERVER1 ; communicates with AAA
    SERVER2 : communicates with EEE

CCC is the parent process of DDD
    -> Doesn't communicate with DDD, just receives status health information from DDD for logging purposes and Queue managment

Goals : Interface between AAA && ( DDD + EEE + FFF )


SERVER 1 only communicate with AAA and CCC SERVER2
SERVER 1 Steps:

1 - Receive a request from A and assign to it a UUID
2 -
    case : Space available
        -> GOTO 4
    case : No Space available
        -> STORE IN QUEUE
3 - Notify AAA about the requests status : in Queue, Processing, Error, Ended
3 - Creates a new child CLI process DDD passing these informations on command line
    - CCC SOCKET SERVER DETAILS
    - FFF SOCKET SERVER DETAILS
    - UUID
4 - monitor DDD's health status, stderr, error, close
5 - on DDD exit/close, free a slot  the queue if the queue was full and GOTO 2.


SERVER 2 only communicate with EEE
SERVER 2 Steps:

 1 - Create a new Server and listen
 2 - an Socket connectio is established, only two kinds
    case :

  case - IDLE:
       case: error
            notify SERVER1

       case: success
            notify SERVER1 - and pass rendered HTML

  case - LOG
        Call ServerLog and log message accordingly


DDD:

    This is a Slimer.js webpage which goal is to

    1 - Load the URL, or prepoulate the HTML
    2 - Attach SLimer.js rules and cache external JS/CSS files for faster execution
    3 - Attach to the client's window several config informations, including:
        - the server environment
        - SERVER 2 connexion details


EEE:
    Is the Angular collection of decorators which goals are
    - detect the IDLE state
    - send the rendered HTML when IDLE to CCC (via server2)
    - send all $Log calls to CCC (via server2) -for server+client side logging


FFF:

    Is a HTTP Cache Server and a Socket Server