Documently

This is a sample application showcasing a DDD/CQRS architecture with Event Sourcing with a number of excellent open source software technologies. I (Henrik) want to make it easy for people to get started with this architecture - why not try to maximize developer happiness and make the world a better place and learn it yourself while you're at it?

Some of the concepts you can learn include:

Creating a Caliburn Micro WPF client with a ribbon, which uses the EventAggregator pattern for its reactive UI and wires itself up with Castle Windsor.
How to configure MassTransit with RabbitMQ
How to write unit-tests for aggregate roots based on simple invoke-method, read resulting events.
How to use CommonDomain to publish committed events
Getting started with RavenDB
Getting started with RabbitMQ
Doing application validation logic (non-emptyness, etc) with FluentValidation
How to use TopShelf with the DomainService (in daemon/Windows Service mode, not hosted).

Currently incomplete but upcoming features:

Properly handling de-duplication of events on the read-side
Properly handling replaying of the event store from the last received point forward on the read-side
Finishing implementing the Document-part of the App and WpfClient
Running a WPF, a iOS phone and console application side-by-side and having the system work as a whole.
Implement the indexing logic for the Document-part of the domain using SVMs.

The above tasks are rather easy to accomplish, they just take a few hours worth of time - so if you feel up for learning the concepts of CQRS and Event Sourcing, feel free to have a go and send a pull-request!

Getting started

First, start the event-store and view-store - RavenDB.Server, in this case. It can be found in src\packages\RavenDB.1.x.x\server. Once this is done, install RabbitMQ

There are two sample clients: one WPF Client with a nice UI and one console application for a quick start. Before using them, you need to compile the solution and start the Documently.Domain.Service console application. This is the domain service that handles the domain logic and broadcasts the (domain) events.

Once both RavenDB and the Domain Service are started without error messages, start one of the clients, or both and try it out!

Note: When starting Domain Service the first time you will need to run it as admin to avoid getting error messages from MassTransit's Performance Counters - or you can run it and just ignore those messages.

Credits

The sample is based on code by:

Mark Nijhof: https://github.com/MarkNijhof/Fohjin
Greg Young: http://github.com/gregoryyoung/m-r
http://dddsamplenet.codeplex.com/
and uses Jonathan Oliver's EventStore and CommonDomain wiki libraries.
The WPF Client uses Caliburn.Micro: http://caliburnmicro.codeplex.com/
The wiki is in parts based on a presentation 2011-07-23 by Greg Young

CommonDomain documentation at https://github.com/haf/CommonDomain/wiki/Intro-to-Common-Domain You can find more information about CQRS in the wiki: https://github.com/haf/Documently/wiki

muratcanoguzhan/Documently

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