pacosw1

Kiosco de Escaneo en Planta — Dispositivo Edge

Resumen

Construir un kiosco de escaneo que corra en una Raspberry Pi (u Orange Pi) en el piso de la planta. Los trabajadores escanean el codigo de barras de su credencial. El kiosco registra el escaneo localmente y lo sincroniza con un servidor central. Eso es todo.

El kiosco es un dispositivo edge sin estado. No determina entrada vs salida, no calcula horas, ni administra empleados. Toda la logica de negocio vive en el servidor central (se proporcionara acceso). El kiosco tiene dos trabajos:

1. Registrar escaneos — codigo de credencial + timestamp → SQLite local
2. Sincronizar datos — enviar escaneos hacia arriba, recibir actualizaciones de empleados hacia abajo

pacosw1

package com.birthdaybot.graphql.resolver.birthday;

import com.birthdaybot.client.DynamoClient;
import com.birthdaybot.graphql.resolver.ResolverHandler;
import com.birthdaybot.graphql.resolver.birthday.input.BirthdayGetAllDataInput;
import com.birthdaybot.storage.dynamodb.model.BirthdayData;
import lombok.extern.log4j.Log4j2;
import org.json.JSONObject;
import software.amazon.awssdk.enhanced.dynamodb.Key;
import software.amazon.awssdk.enhanced.dynamodb.model.QueryConditional;

pacosw1

package com.birthdaybot.graphql.resolver;

import com.birthdaybot.client.DynamoClient;
import lombok.extern.log4j.Log4j2;
import org.json.JSONObject;

@Log4j2
public abstract class ResolverHandler<I, O> {
    protected String userId;

pacosw1

import "github.com/go-redis/redis/v8"

redis.NewUniversalClient(&redis.UniversalOptions{
	Addrs:              nil,  // one if single db, multiple if cluster
	OnConnect:          nil,  // a middleware function ran before each command
	MaxRetries:         0,    // max amount of retries 
	DialTimeout:        0,    // ms to wait before giving up on connecting to db
	ReadTimeout:        0,    // ms to wait before giving up on a hanging read command
	WriteTimeout:       0,    // same as above but for read
	PoolFIFO:           false, // should connections be first in first out?

pacosw1

include .envrc

## help: print this help message
.PHONY: help
help:
	@echo 'Usage:'
	@sed -n 's/^##//p' ${MAKEFILE_LIST} | column -t -s ':' | sed -e 's/^/ /'
	.PHONY: confirm confirm:
	@echo -n 'Are you sure? [y/N] ' && read ans && [ $${ans:-N} = y ]

pacosw1

GOOS=linux GOARCH=amd64 go build -ldflags='-s' -o=./deployment/prod/linux_amd64 ./cmd/
//^           ^                                 ^                                  ^
//the os     the architecture                   output file                     your project root

pacosw1

{
	"Version": "2012-10-17",
	"Statement": [
		{
			"Sid": "PublicReadGetObject",
			"Effect": "Allow",
			"Principal": "*",
			"Action": "s3:GetObject",
			"Resource": "arn:aws:s3:::assets.tudicuando.com/*"
		}

pacosw1

{
	"Version": "2012-10-17",
	"Statement": [
		{
			"Sid": "PublicReadGetObject",
			"Effect": "Allow",  
			"Principal": "*", 
			"Action": "s3:GetObject", 
			"Resource": "arn:aws:s3:::assets.yourbucket.com/*"
		}

pacosw1

class Vector2D {
  private X: number;
  private Y: number;
  
  constructor(X,Y) {
    this.X = X;
    this.Y = Y;
  }
  
  //returns the magnitude of the vector

pacosw1

const removeItem = (itemID) => {
  
  //create cartCopy
  let cartCopy = [...cart]
  
  cartCopy = cartCopy.filter(item => item.ID != itemID);
  
  //update state and local
  setCart(cartCopy);