jedi4ever

Building chromium on OSX

See https://chromium.googlesource.com/chromium/src/+/master/docs/mac_build_instructions.md

git clone depot_tools

add to path (not using ~ but $HOME) in .bash_profile

Increase vnodes

sudo sysctl kern.maxvnodes=$((512*1024))

jedi4ever

Topics:
- design
- frontend (react ~)
- mobile app (ios/android/...)
- VR
- iot (alexa, arduino, ...
- testing
- continuous delivery (artefact, versioning,...)
- serverless/containers/cloud
- ai stuff

jedi4ever

Analyzed

• http://docs.aws.amazon.com/lambda/latest/dg/retries-on-errors.html

// Explains Dead Letter Queue + bad event handling + blocking

• https://stackoverflow.com/questions/32501985/amazon-kinesis-aws-lambda-retries

• https://github.com/awslabs/lambda-streams-to-firehose

• https://aws.amazon.com/blogs/compute/amazon-kinesis-firehose-data-transformation-with-aws-lambda/

// You set the amount of events(batchsize) + guarantees of concurrency per shard+ plus key only active in 1 shard at the time

jedi4ever

These are notes while researching a way to convert a browser/website to a stream. This could be used for Facebook Live or for webrecording. TL'DR:

• I started with Phantomjs - but that didn't support the html5 video tag
• SlimerJS supports it, but there is no way to record audio directly (though this might come from desktop audio)
• So I moved to research ffmpeg/X11/XVFB to record it with linux which works
• But ffmpeg has no easy way to mix streams/overlays to I moved on to OBS with overlay browser support
• I started researching options OBS in docker and it needed best a GPU , so I move to nvidia-docker
• And so came across building game servers on EC2/AWS using GPUs and managed to run OBS inside of GPU g2x.large machine
• I tried streaming to twich , which works great and managed to restream 4K 60FPS youtube on an AWS instance
• Remote control works through OBS-Remote but OBS has kinda limit in types of features

jedi4ever

There is not a lot of doc or posts about making an headless renderer with webgl support. Here are few of my findings

I tried things on Heroku, but I was not able to make anything work.

Next, I tried EC2 t2.micro, only to find out that OpenGL needs a graphic card to execute (sure, there are things like mesa that I didn't tried, but it looked like I needed to build Chrome and I didn't want to go that way).

The only easy solution that I found was AWS EC2 GPU Instances. They are pretty much overpriced for what I'm trying to acheive, but it worked. You need to use an AMI that support the Nvidia GRID thing. eg https://aws.amazon.com/marketplace/pp/B00FYCDDTE and its CentOS.

Slimer need Firefox and Firefox need shared libraries that we need to install (we will use a custom repo).

jedi4ever

 fabric-activate: clean simulator-build
   -xcrun simctl terminate 6A6D30C8-AA08-4A55-A95A-0D5983AE33B2 $(BUNDLE_ID)
   -xcrun simctl shutdown 6A6D30C8-AA08-4A55-A95A-0D5983AE33B2
   -xcrun simctl erase 6A6D30C8-AA08-4A55-A95A-0D5983AE33B2
   -xcrun simctl boot 6A6D30C8-AA08-4A55-A95A-0D5983AE33B2
   -xcrun simctl install 6A6D30C8-AA08-4A55-A95A-0D5983AE33B2 $(XCODE_APP_FILE)
   -xcrun simctl launch 6A6D30C8-AA08-4A55-A95A-0D5983AE33B2 $(BUNDLE_ID)

jedi4ever

import 'babel-polyfill';
import firstView from 'views/first';
import * as liveReload from 'lib/liveReload';

App.onLaunch((launchOptions) => {
  firstView();

  liveReload.connect(launchOptions);
});

jedi4ever

# !/bin/bash

# Copyright (c) 2011 Float Mobile Learning
# http://www.floatlearning.com/
#
# Permission is hereby granted, free of charge, to any person obtaining 
# a copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation 
# the rights to use, copy, modify, merge, publish, distribute, sublicense, 
# and/or sell copies of the Software, and to permit persons to whom the 

jedi4ever

Created vm ubuntu 14.04
Tried installing via apt-get install youtube-dl
  - kept getting errors on Unable to download webpage: <urlopen error [Errno 8] _ssl.c:510: EOF occurred in violation of protocol>
  - this is a bug when using python2 (default on ubuntu)
  - So remove the apt package
  
Install via pip:
- apt-get install pip
- alias python=`/usr/bin/python3`
- pip install youtube-dl

jedi4ever

#!/bin/bash

DOCKER_IP=$(ip addr show docker0|grep "inet "|sed -e 's/^[ ]*//g'| cut -d ' ' -f 2| cut -d '/' -f 1)

docker stop redis_0
docker stop redis_1
docker stop sentinel_0
docker stop sentinel_1
docker stop sentinel_2