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Martin Polanka 8 years ago
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# Overall Architecture
## Components
TODO:
## Description
**ReCodEx** is designed to be very modular. In the following picture main components are arranged into one possible configuration. Note, that connections between components are not fully accurate.
![Overall Architecture](https://github.com/ReCodEx/GlobalWiki/blob/master/images/Overall_Architecture.png)
**Web app** is main part of whole project for users. It provides nice user interface and is the only part, that interacts with outside world directly. **Web API** contains almost all logic of the app including _user management and authentication_, _storing and versioning files_ (with help of **File server**), _counting and assigning points_ to users etc. **Broker** is essential part of whole architecture and can be marked as single point of failure. It maintains list of available **Workers**, receives submissions from the **Web API** and routes them further and reports progress of evaluations back to the **Web app**. **Worker** securely runs each received job and evaluate it's results. **Monitor** resends evaluation progress messages to the **Web app** in order to be presented to users.
Almost whole communication goes through **Broker** and ZeroMQ messaging middleware. When **Web app** wants to execute submission then all datas are handed over to **Worker** through **Broker**, similar situation is with progress state which start in **Worker** goes through **Broker** then pass **Monitor** and end up in **Web app** (as WebSockets). Only part of communication, which does not include **Broker**, is communication with **File server** which is realized through HTTP commmunication. This communication can be initiated by **Web API** or by **Worker**, other services have no access to **File server**. Detailed view into communication is on separate page [[Communication]].
## Communication

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