The eventsourcing-example from valadan

eventsourcing-example's Introduction

News

11 Aug 2012: A complete re-write based on the Eligosource event-sourcing library is now available in the eventsourced-example repository which now represents the recommended approach how to implement event-sourced web applications.
23 Feb 2012: Work on branch play replaces the Jersey and Scalate-based web layer with Play Framework 2.0

Blog

Part	Branch
Building an Event-Sourced Web Application - Part 1: Domain Model, Events and State	part-1
Building an Event-Sourced Web Application - Part 2: Projections, Persistence, Consumers and Web Interface	part-2

Run

sbt run-main dev.example.eventsourcing.server.Webserver

Then go to http://localhost:8080 and create some invoices.

Web API

The example application's RESTful service interface supports HTML, XML and JSON as representation formats. Content negotiation is done via the Accept HTTP header. The following examples show how to get different representations of invoice-3

HTML

Enter http://localhost:8080/invoice/invoice-3 into your browser. Provided you have created an invoice with id invoice-3 before you should see something like

XML

curl -H "Accept: application/xml" http://localhost:8080/invoice/invoice-3

yields

<draft-invoice id="invoice-3" version="2">
    <total>12.8</total>
    <sum>12.8</sum>
    <discount>0</discount>
    <items>
        <item>
            <description>item-1</description>
            <count>1</count>
            <amount>4.1</amount>
        </item>
        <item>
            <description>item-2</description>
            <count>3</count>
            <amount>2.9</amount>
        </item>
    </items>
</draft-invoice>

JSON

curl -H "Accept: application/json" http://localhost:8080/invoice/invoice-3

yields

{
 "draft-invoice":
 {
  "@id":"invoice-3",
  "@version":"2",
  "total":"12.8",
  "sum":"12.8",
  "discount":"0",
  "items":
  {
   "item":
   [
   {
    "description":"item-1",
    "count":"1",
    "amount":"4.1"
   },
   {
    "description":"item-2",
    "count":"3",
    "amount":"2.9"
   }
   ]
  }
 }
}

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