lijameshao

## youtube-search.py
#!/usr/bin/python3

# Copyright (C) 2020  Stefan Vargyas
#
# 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 Software is
# furnished to do so, subject to the following conditions:

## sqlalchemy_session_routing_alternative.py
# Option 2
def get_session_alternative(read_only=False):
    if read_only:
        SessionLocal = sessionmaker(bind=engine_ro)
    else:
        SessionLocal = sessionmaker(bind=engine)
    session = SessionLocal()
    try:
        yield session
    finally:

## sqlalchemy_session_routing.py
import sqlalchemy
from sqlalchemy.sql import Select, Update, Delete, Insert
from sqlalchemy.orm import Session, sessionmaker
from sqlalchemy.ext.declarative import DeclarativeMeta, declarative_base

Base: DeclarativeMeta = declarative_base()
# Hack to get around engines need type DeclarativeBase or MappedClass or Table but we are targeting the same Base
# and we want to route on a query level
ReadBase = Base

## rds_proxy_endpoint.yml
RDSDBProxyEndpoint:
  Type: AWS::RDS::DBProxyEndpoint
  DependsOn:
    - RDSDBProxy
  Properties:
    DBProxyEndpointName: ReadEndpoint
    DBProxyName: !Ref RDSDBProxy
    TargetRole: READ_ONLY
    VpcSecurityGroupIds:
      - !Ref YourDBClusterSecurityGroup

## rds_db_proxy.yml
RDSDBProxyRole:
  Type: "AWS::IAM::Role"
  Properties:
    AssumeRolePolicyDocument:
      Version: "2012-10-17"
      Statement:
        - Effect: Allow
          Principal:
            Service:
              - "rds.amazonaws.com"

## medium-aws-s3-website-with-cloudfront-and-oai.json
{
  "AWSTemplateFormatVersion" : "2010-09-09",

  "Description" : "AWS CloudFormation Template to create a static S3 website with CloudFront distribution.",

  "Parameters" : {
    "S3BucketName" : {
      "Type" : "String",
      "Description" : "The name of your S3 bucket"
    },

## medium-web-dev-streaming-chart.html
<!DOCTYPE html>
<html lang="en-US">
  <head>
    <meta charset="utf-8">
    <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/moment@2.27.0/min/moment.min.js"></script>
    <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/chart.js@2.9.3"></script>
    <script type="text/javascript" src="chartjs-plugin-streaming-min.js"></script>
    <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/pusher/4.1.0/pusher.js"></script>
    <script defer type="text/javascript" src="coinbase-minimal.js"></script>
  </head>

## medium-web-dev-create-chart-with-streaming-plugin.js
let chart = new Chart(ctx, {
    type: 'line',
    data: {
        datasets: [{
            data: [],
            label: 'Bid',
            borderColor: 'rgb(0, 255, 0)',
            backgroundColor: 'rgba(0, 255, 0, 0.5)',
            fill: false,
            lineTension: 0

## medium-web-dev-create-canvas-element.js
const canvasDiv = document.querySelector('#canvas-div');
let canvas = document.createElement("canvas");
canvasDiv.appendChild(canvas);

let ctx = canvas.getContext('2d');

## medium-web-dev-parse-wss-push-to-buf.js
streamer.onmessage = (message) => {
    let data = JSON.parse(message.data);

    if (data['type'] === 'heartbeat') {

        let time = data.time;
        console.log('Heartbeat: ' + time);

    };
	#!/usr/bin/python3

	# Copyright (C) 2020 Stefan Vargyas
	#
	# 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 Software is
	# furnished to do so, subject to the following conditions:
	# Option 2
	def get_session_alternative(read_only=False):
	if read_only:
	SessionLocal = sessionmaker(bind=engine_ro)
	else:
	SessionLocal = sessionmaker(bind=engine)
	session = SessionLocal()
	try:
	yield session
	finally:
	import sqlalchemy
	from sqlalchemy.sql import Select, Update, Delete, Insert
	from sqlalchemy.orm import Session, sessionmaker
	from sqlalchemy.ext.declarative import DeclarativeMeta, declarative_base

	Base: DeclarativeMeta = declarative_base()
	# Hack to get around engines need type DeclarativeBase or MappedClass or Table but we are targeting the same Base
	# and we want to route on a query level
	ReadBase = Base
	RDSDBProxyEndpoint:
	Type: AWS::RDS::DBProxyEndpoint
	DependsOn:
	- RDSDBProxy
	Properties:
	DBProxyEndpointName: ReadEndpoint
	DBProxyName: !Ref RDSDBProxy
	TargetRole: READ_ONLY
	VpcSecurityGroupIds:
	- !Ref YourDBClusterSecurityGroup
	RDSDBProxyRole:
	Type: "AWS::IAM::Role"
	Properties:
	AssumeRolePolicyDocument:
	Version: "2012-10-17"
	Statement:
	- Effect: Allow
	Principal:
	Service:
	- "rds.amazonaws.com"
	{
	"AWSTemplateFormatVersion" : "2010-09-09",

	"Description" : "AWS CloudFormation Template to create a static S3 website with CloudFront distribution.",

	"Parameters" : {
	"S3BucketName" : {
	"Type" : "String",
	"Description" : "The name of your S3 bucket"
	},
	<!DOCTYPE html>
	<html lang="en-US">
	<head>
	<meta charset="utf-8">
	<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/moment@2.27.0/min/moment.min.js"></script>
	<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/chart.js@2.9.3"></script>
	<script type="text/javascript" src="chartjs-plugin-streaming-min.js"></script>
	<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/pusher/4.1.0/pusher.js"></script>
	<script defer type="text/javascript" src="coinbase-minimal.js"></script>
	</head>
	let chart = new Chart(ctx, {
	type: 'line',
	data: {
	datasets: [{
	data: [],
	label: 'Bid',
	borderColor: 'rgb(0, 255, 0)',
	backgroundColor: 'rgba(0, 255, 0, 0.5)',
	fill: false,
	lineTension: 0
	const canvasDiv = document.querySelector('#canvas-div');
	let canvas = document.createElement("canvas");
	canvasDiv.appendChild(canvas);

	let ctx = canvas.getContext('2d');
	streamer.onmessage = (message) => {
	let data = JSON.parse(message.data);

	if (data['type'] === 'heartbeat') {

	let time = data.time;
	console.log('Heartbeat: ' + time);

	};