colllin

From Leo via slack on Jan 3rd, 2020 in #graphql channel:

This is the script you should run in order to delete all of the GraphQL metadata for the current DB (it won't delete any actual data):

// Remove GraphQL metadata from Collections, Functions, and Indexes
Foreach(Paginate(Collections(), {size:10000}), Lambda('ref', Update(Var('ref'), {data: {gql: null}})))
Foreach(Paginate(Functions(), {size:10000}), Lambda('ref', Update(Var('ref'), {data: {gql: null}})))
Foreach(Paginate(Indexes(), {size:10000}), Lambda('ref', Update(Var('ref'), {data: {gql: null}})))

colllin

import gym

class FlattenAction(gym.ActionWrapper):
    """Action wrapper that flattens the action."""
    def __init__(self, env):
        super(FlattenAction, self).__init__(env)
        self.action_space = gym.spaces.utils.flatten_space(self.env.action_space)
        
    def action(self, action):
        return gym.spaces.utils.unflatten(self.env.action_space, action)

colllin

> CreateIndex({
    name: 'users_by_messageSentAt_desc',
    source: Collection('messages'),
    values: [
        {field: ['data','sentAt'], reverse: true},
        {field: ['data','fromUser']}
    ]
})

colllin

const util = require('util');
const _ = require('lodash');
const mailgun = require("mailgun-js");

async function queryByCustomData(data) {
    let mg = mailgun({apiKey: process.env.MAILGUN_API_KEY});
    let asyncGet = util.promisify(_.bind(mg.get, mg));
    let response = await asyncGet(`/YOUR_MAIL_DOMAIN/events`, {
        "user-variables": JSON.stringify(data),
    });

colllin

• Create & attach volume in AWS console (must be in same availability zone).
• From your ec2 instance, list attached volumes:

  sudo fdisk -l
  

• Find the disk in the list and copy it's identifier to your clipboard, e.g. /dev/nvme1n1.
• If it's a brand new volume, you probably need to format it:
  Don't do this to a volume with data on it, or else it won't have data on it anymore. You can skip this step and come back to it if you get an error about wrong fs type when trying to mount the disk.

colllin

Auth0 + FaunaDB ABAC integration: How to expire Fauna user secrets.

Fauna doesn't (yet?) provide guaranteed expiration/TTL for ABAC tokens, so we need to implement it ourselves if we care about it.

What's in the box?

3 javascript functions, each of which can be imported into your project or run from the command-line using node path/to/script.js arg1 arg2 ... argN:

1. deploy-schema.js: a javascript function for creating supporting collections and indexes in your Fauna database.

colllin

Goal

• use Auth0 for logins
• retrieve a Fauna instance secret for the user (see Fauna's ABAC tutorial)
• have the user’s device talk directly to Fauna's native graphql endpoint using their secret for authorization.

Solutions

At the very least, we need two pieces of functionality:

1. Create a user document in Fauna to represent each Auth0 user.
2. Exchange an Auth0 JWT for a FaunaDB user secret.

colllin

colllin

import torch
import psutil
import numpy as np

def log_profile(summaryWriter, step, scope='profile', cpu=True, mem=True, gpu=torch.cuda.is_available(), disk=['read_time', 'write_time'], network=False):
    if cpu:
        cpu_usage = np.array(psutil.cpu_percent(percpu=True))
        summaryWriter.add_scalars(f'{scope}/cpu/percent', {
            'min': cpu_usage.min(),
            'avg': cpu_usage.mean(),

colllin

In this article, I will share some of my experience on installing NVIDIA driver and CUDA on Linux OS. Here I mainly use Ubuntu as example. Comments for CentOS/Fedora are also provided as much as I can.

Table of Contents

• Install NVIDIA Graphics Driver via apt-get
• Install NVIDIA Graphics Driver via runfile
  • Remove Previous Installations (Important)
  • Download the Driver
  • Install Dependencies
  • Creat Blacklist for Nouveau Driver

• Stop lightdm/gdm/kdm