mnemosyne

Mnemosyne

Introduction

Mnemosyne is an open-source self-hosted session management service. It's written in Go, making it easy to build and deploy as a static binary.

It provides two ways for communication:

• mnemosyne.Mnemosyne - Simplified way that hides complexity of gRPC library.
• mnemosynerpc.SessionManager - Full feature client.

Quick Start

To install and run service:

$ go get -d github.com/piotrkowalczuk/mnemosyne/...
$ cd $GOPATH/src/github.com/piotrkowalczuk/mnemosyne
$ glide install
$ go install ./cmd/mnemosyned
$ mnemosyned -log.format=humane -postgres.address='postgres://localhost/example?sslmode=disable'

Simpliest implementation could looks like that:

package main

import (
	"fmt"

	"golang.org/x/net/context"
	"github.com/piotrkowalczuk/mnemosyne"
)

func main() {
	mnemo, err := mnemosyne.New(mnemosyne.MnemosyneOpts{
		Addresses: []string{"127.0.0.1:8080"},
		Block: true,
	})
	if err != nil {
		// ...
	}
	defer mnemo.Close()

	ses, err := mnemo.Start(context.Background(), "subject-id", "subject-client", map[string]string{
		"username": "johnsnow@gmail.com",
		"first_name": "John",
		"last_name": "Snow",
	})
	if err != nil {
		// ...
	}

	fmt.Println(ses.AccessToken)
}

Storage Engine

Goal is to support multiple storage's, like PostgreSQL, Redis or MongoDB. Nevertheless currently supported is only PostgreSQL.

Remote Procedure Call API

For communication, Mnemosyne is exposing RPC API that uses protocol buffers, Google’s mature open source mechanism for serializing structured data.

• Create
• Get
• List
• Exists
• Abandon
• SetData
• Delete

Installation

Mnemosyne can be installed in one way, from source. Or can be used as a container using docker image.

From source

To install from source both go tools and glide is required.

$ go get -d github.com/piotrkowalczuk/mnemosyne/...
$ cd $GOPATH/src/github.com/piotrkowalczuk/mnemosyne
$ make

Configuration

mnemosyned accepts command line arguments to control its behavior. Possible options are is listed below.

Running

As we know, mnemosyne can be configured in many ways. For the beginning we can start simple:

$ mnemosyned postgres.address="postgres://localhost/test?sslmode=disable"

Mnemosyne will automatically create all required tables/indexes for specified database.

Contribution

TODO

• Client library
  • Go
  • Python
• Engines
  • PostgreSQL
    • Get
    • List
    • Exists
    • Create
    • Abandon
    • SetData
    • Delete
    • Setup
    • TearDown
  • RAM
  • Redis