mattbajorek

#!/usr/bin/env python3
"""Chaincode Exercise

Try getting node 1 to mine another block,
send it to node 2, and check that node 2 received it.
"""
from collections import defaultdict

from test_framework.blocktools import (
    create_block,

mattbajorek

package main

import (
	"errors"
	"fmt"
	"math/rand"
	"strconv"
	"sync"
	"time"
)

mattbajorek

func AwaitAll[Input any, Response any](sliceOfInputs []Input, asyncFunc func(Input) Response) []Response {
	responses := make([]Response, len(sliceOfInputs))

	var waitGroup sync.WaitGroup

	for i, input := range sliceOfInputs {
		waitGroup.Add(1)
		go func(i int, input Input) {
			responses[i] = asyncFunc(input)
			waitGroup.Done()

mattbajorek

package main

import (
	"fmt"
	"sync"
	"time"
)

func main() {
	// Start request limiter

mattbajorek

package main

import (
	"fmt"
	"sync"
	"time"
)

func main() {
	// Create request limiter

mattbajorek

import { Injectable } from '@nestjs/common';
import { mapLimit } from 'async';
import * as firebase from 'firebase-admin';
import { BatchResponse } from 'firebase-admin/lib/messaging/messaging-api';
import { chunk } from 'lodash';
import * as shell from 'shelljs';

export interface ISendFirebaseMessages {
  token: string;
  title?: string;

mattbajorek

import { Injectable } from '@nestjs/common';
import { mapLimit } from 'async';
import * as firebase from 'firebase-admin';
import { BatchResponse } from 'firebase-admin/lib/messaging/messaging-api';
import { chunk } from 'lodash';
import * as shell from 'shelljs';

export interface ISendFirebaseMessages {
  token: string;
  title?: string;

mattbajorek

import { Injectable } from '@nestjs/common';
import * as firebase from 'firebase-admin';
import { BatchResponse } from 'firebase-admin/lib/messaging/messaging-api';
import * as shell from 'shelljs';

@Injectable()
export class NotificationsService {
  ...
  
  public async sendAll(messages: firebase.messaging.TokenMessage[], dryRun?: boolean): Promise<BatchResponse> {

mattbajorek

import { Injectable } from '@nestjs/common';
import * as firebase from 'firebase-admin';

@Injectable()
export class NotificationsService {
  constructor() {
    // For simplicity these credentials are just stored in the environment
    // However these should be stored in a key management system
    const firebaseCredentials = JSON.parse(process.env.FIREBASE_CREDENTIAL_JSON);
    firebase.initializeApp({

mattbajorek

const AWS = require('aws-sdk');
const sns = new AWS.SNS({ apiVersion: '2010-03-31' });

exports.handler = async (event, context) => {
    let body;
    let statusCode = '200';
    const { origin } = event.headers;
    const acceptedOrigins = ['http://localhost:8080', 'https://mywebsite.com']; // PLACE PROPER WEBSITE ORIGIN
    const headers = {
        'Access-Control-Allow-Headers': 'Content-Type',