hrchu

@startuml
skinparam handwritten true
"You/Browser" -> slack.com: 1. I would like to access my files on Google Drive via your interface.
slack.com -> "You/Browser": 2. You should apply the "Authorization Code" from Google for me first.
"You/Browser" -> account.google.com: 3. I would like to permit slack.com to access my files.
account.google.com -> "You/Browser": 4. Are you sure?
"You/Browser" -> account.google.com: 5. [Y]
account.google.com -> "You/Browser": 6. Okay. Here is the "Authorization Code." Plz give it back to slack.com now.
"You/Browser" -> slack.com: 7. You can do what I asked now (with the Authorization Code which is just received from Google.) 
slack.com -> account.google.com: 8. I would like to exchange the "Authorization Code" for the "Access Token."

hrchu

# Configuration file for runtime kernel parameters.
# See sysctl.conf(5) for more information.

# See also http://www.nateware.com/linux-network-tuning-for-2013.html for
# an explanation about some of these parameters, and instructions for
# a few other tweaks outside this file.

# See evil packets in your logs.
net.ipv4.conf.all.log_martians = 1

hrchu

In [2]: from solid_oidc_client import SolidOidcClient, MemStore
   ...: solid_oidc_client = SolidOidcClient(storage=MemStore())
   ...: import requests

In [4]: issuer = 'https://login.inrupt.com/'
   ...: redirect_url = 'http://localhost:3333/oauth/callback'
   ...: solid_oidc_client.register_client(issuer, [redirect_url])

In [5]: login_url = solid_oidc_client.create_login_uri('/', redirect_url)
   ...: print(login_url)

hrchu

package org.example;

import java.io.File;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.nio.file.Files;
import java.nio.file.Path;

public class PlayPath {

hrchu

#!/bin/sh 
# Script to download, compile and install mhvtl
# Tested on ubuntu 16.04
# Origin: http://mhvtl-a-linux-virtual-tape-library.966029.n3.nabble.com/Easy-Install-for-Debian-Ubuntu-td4025413.html
# 03/04/13 
#	Added libconfig-general-perl (ensures tgt-admin can run)
# 04/04/13
#	Added line to append www-data to sudoers automatically
#	Added check for sudo/root
#	Added copy for tgt-admin in sbin (fixes persistant config in tgt mhvtl-gui)

hrchu

import com.google.gson.Gson;
import com.google.gson.JsonElement;
import java.io.ByteArrayInputStream;
import java.io.InputStreamReader;
import org.junit.jupiter.api.Test;

/**
 * Convert Json from/to object/tree/inputstream/reader/file with Gson in Java
 * 
 * ref https://www.javadoc.io/doc/com.google.code.gson/gson/2.9.0/com.google.gson/com/google/gson/Gson.html

hrchu

import logging
from typing import Iterable, Dict, BinaryIO

import boto3
from boto3.s3.transfer import TransferConfig
from botocore.config import Config
from botocore.exceptions import ClientError

KB = 1024
MB = KB * KB

hrchu

In 30mins, I will address crucial parts of implementing Solid in Python, so attendees can understand how to build a decentralized web application with Python and get the benefits of this promising architecture.

Overview: why we need decentralized web architecture and what does it look like in a Solid way?

In classical web architecture, application and data are bundled together, hence user data are naturally owned by service providers. This causes security, privacy, interoperability, and many other well-known issues for both users and service providers.

Service providers need to pay additional responsibility to protect user data in the scenario. Moreover, users cannot fully control and migrate their data without additional mechanisms provided by the service providers (GDPR tries to address this in a nontechnical way.)

With Solid, all personal data is stored in a data repository named Pod controlled by users. That could be set up on a user's server at home, or provided by a data storage supplier chos

hrchu

// https://github.com/rdfjs/N3.js/

import {Parser, StreamParser, Writer} from "n3";
import * as fs from "fs";
import {DataFactory} from 'n3';
import {Writable} from 'stream';

function fromQualsToAString() {
    const writer = new Writer({prefixes: {c: 'http://example.org/cartoons#'}});
    const {namedNode, literal, defaultGraph, quad} = DataFactory;

hrchu

def gen():
    a = range(5)
    for x in a:
        yield x
        
x = gen() # instanlize

x.__next__() # get next
Out[36]: 0
next(x) # alternative way