claustres’s gists

claustres / segregated-db.js

Created August 3, 2017 15:14

Organisation hooks to manage a segregated DB

	import mongodb from 'mongodb'
	import mongoManager from 'feathers-mongodb-management'

	// Connect to the DB at startup
	app.db = await mongodb.connect(app.get('dbUrl'))
	// Create the service to manage DBs
	app.use('/databases', mongoManager.database({ db: app.db })
	...
	// Hooks to manage DB linked to an organisation
	function createOrganisationDB (hook) {

claustres / dynamic-service.js

Last active September 5, 2017 05:00

Organisation service on a segregated DB

	import service from 'feathers-mongodb'

	function createOrganisationService (hook) {
	let organisationDb = app.db.db(hook.result._id.toString())
	app.use(hook.result._id.toString() + '/assets', service({
	Model: organisationDb.collection('assets')
	})
	return hook
	}
	...

claustres / proxy-service.js

Last active August 29, 2021 20:14

Proxy service

	import { merge } from 'feathers-commons'

	function createProxyService (options) {
	const targetService = options.service
	function proxy (params) {
	return merge(params, options.params)
	}
	return {
	find (params) { return targetService.find(proxy(params)) },
	get (id, params) { return targetService.get(id, proxy(params)) },

claustres / authorization-service.js

Last active August 3, 2017 16:50

Dynamic authorization service

	import _ from 'lodash'
	import sift from 'sift'

	// Util function to look for a given resource in a scope
	function findResource (scope, query) {
	let results = sift(query, scope)
	return results.length > 0 ? results[0] : null
	}

	const service = {

claustres / dynamic-abilities.js

Last active August 4, 2017 15:47

Dynamic abilities

	const Permissions = {
	member: 0,
	manager: 1,
	owner: 2
	}

	const Scopes = ['organisations', ...]

	// Construct abilities for a given subject on a resource based on its permissions
	function defineResourceRules (subject, resource, resourceService, can) {

claustres / ability-hooks.js

Last active August 4, 2017 15:48

Abilities hooks

	...
	function defineAbilitiesForSubject (subject) {
	const { rules, can, cannot } = AbilityBuilder.extract()

	// Run registered hooks
	hooks.forEach(hook => hook(subject, can, cannot))

	...
	}

claustres / create_collection.js

Created August 28, 2017 08:52

Create MongoDB collection

	db = db.getSiblingDB('random');

	var minDate = new Date(2012, 0, 1, 0, 0, 0, 0);
	var maxDate = new Date(2013, 0, 1, 0, 0, 0, 0);
	var delta = maxDate.getTime() - minDate.getTime();

	var documentNumber = arg1;
	var batchNumber = 1000;

	var start = new Date();

claustres / query_collection.js

Last active August 28, 2017 12:52

Query MongoDB collection

	db = db.getSiblingDB('random');

	var start = new Date();
	printjson(db.randomData.aggregate([ { $group : { _id: null, max: { $max : "$value" }}} ], {allowDiskUse: true}).toArray());

	print('Find maximum value in ' + (new Date() - start)/1000.0 + 's');

	start = new Date();
	printjson(db.randomData.find( { value: { $gt: 99.9 } } ).sort({ value: -1}).limit(100).toArray());

claustres / mongodb_benchmark.md

Last active August 28, 2017 15:39

MongoDB benchmark

Test	10e7 documents	10e8 documents	10e9 documents
Bulk insert	206 s	2029 s	20687 s
Indices	55 s	592 s	6157 s
Disk space	~ 260 MB	~ 2.6 GB	~ 26 GB
Memory space	~ 3 GB	~ 6 GB	all
Max request	7 s	78 s	1192 s
Greater request	0.013 s	0.025 s	0.166 s
ID request	< 1ms	< 1ms	0.024 s

claustres / osm-bright-aeroway-labels.json

Last active September 25, 2017 12:54 — forked from anonymous/style.json

OSM Bright

Luc Claustres claustres