sorcery

Sorcery

NOTES: Sorcery is an open source distributed server for event sourcing, it performs the role of event store and pub sub queue using REST

This document is work in progress the current API spec can be found at the below location

https://github.com/nicholasjackson/sorcery/blob/master/_build/swagger_spec/index.html

Configuration

For building Sorcery into a container we use consul and consul-template to supply the defaults.

CONSUL=consul:8500

The system is made up of a server and either one or more workers.

Server: The server is responsible for receiving requests and for registering subscribers, exposes a HTTP endpoint

Workers: The workers publish the events, to the subscribers

API: HEADERS: X-API-Key: asdfasdasdasd33434

publish is the public interface which the clients use to distribute a event through the system

/publish/{event-name}
{
  "name": {
    "firstname": "Nic",
    "surname": "Jackson"
  },
  "roles": [
    "Admin",
    "Guest"
  ]
}

subscribe is used by a service to register its endpoint in order to receive events of a particular type

/subscribe/{event-name}
{
  "server-id": "12345"
  "callback": "http://myserver.com/path" // POST
  "filter": {"data": "name.firstname=jack%"} # see filters
}

unsubscirbe to one or multiple events

/unsubscribe/{event-name}/{server-id}

/unsubscribe/all/{server-id}

events list will list all events sent by the system that match the criteria

/events/list/{event-name}/{limit}/{page}/{event_name}/{filter}

replay a single event

/events/reply/single/{event_id}

replay multiple events

/events/reply/multiple/{event_name}/{filter}/{limit}

filters

{
  "date_start": "2015-10-12",
  "date-end": "2015-10-13", //optional
  "data": "name.firstname=nic%&name&roles[any]=Admin"
}

Object Matcher

attempts to match a value on an data object using dot notation e.g. given the below object

{
  "name": {
    "firstname": "Nic",
    "surname": "Jackson"
  },
  "roles": [
    "Admin",
    "Guest"
  ]
}

name.firstname=nic% would match this event

= equality matcher
!= inequality matcher
> greater than (number)
< less than (number)
%wildcard

Array matcher

[first] = first index
[any] = match any index
[last] = last index
[2] = 3rd index

Array matchers can be combined with object matchers like...

data[any]=(name.firstname=nic%)