flatsoup

event sourcing (append only log) to a flat file

install

npm install flatsoup

example

var pull     = require('pull-stream');
var test     = require('tape');
var flatsoup = require('flatsoup');

var database = 'demo';
var table    = 'event_bucket';

var demo = new flatsoup(database, table);

demo.clear();

test('add events and listen as pull streams', function (t) {
	
	t.plan(7);	

	demo.add({demo:true, order: 0}, function () {
		t.ok(true, 'add handles callback')
	});
	
	demo.add({demo:false, order: 1});

	var counter = 0;
	var counter_latest = 1; 

	pull(
		demo.pull_all(),
		pull.drain(function (item) {
			t.ok(item.value.order === counter, 'can pull event');
			counter += 1;	
		})
	);

	pull(
        	demo.pull_all_latest(),
        	pull.drain(function (item) {
			t.ok(item.value.order === counter_latest, 'can pull latest event');
			counter_latest -= 1;
        	})
	);


	demo.get_all(function (results) {
		t.ok(results[0].value.order < results[1].value.order, 'can get all with callback');
	});

	demo.get_all_latest(function (results) {
        	t.ok(results[0].value.order > results[1].value.order, 'can get latest with callback');
	});

	pull(
        	demo.pull_all_latest(),
        	pull.drain(function (item) {
			console.log('[events found]', item)
        	})
	)
});