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Laboratórios práticos

1. Criação e manipulação de arquivos em ambiente Unix/Linux
   Em uma infraestrutura de servidores de uma grande organização, um analista de suporte precisa criar um arquivo de log para registrar eventos críticos. Para isso, ele deve:
   • Criar um arquivo chamado sistema.log no diretório /var/logs/custom/.
   • Inserir a seguinte entrada de log no arquivo:

[2025-03-04 14:35:00] ALERTA: O sistema identificou uma tentativa de acesso não autorizado.

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<ehcache xmlns:xsi="<http://www.w3.org/2001/XMLSchema-instance>"
         xsi:noNamespaceSchemaLocation="<http://ehcache.org/ehcache.xsd>"
         monitoring="autodetect"
         dynamicConfig="true">

    <diskStore path="java.io.tmpdir/ehcache" />

    <cache name="productCache"
           maxEntriesLocalHeap="1000"
           maxEntriesLocalDisk="5000"

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package br.com.zeroth.zth_product_srv.config;

import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;

import java.time.Duration;

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spring:
  data:
    redis:
      url: redis://${HOST:localhost}:6379
      password: 123456
  cache:
    type: redis

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version: '3'
services:
  redis:
    image: redis:6.2-alpine
    container_name: redis
    ports:
      - "6379:6379"
    environment:
      - REDIS_PASSWORD=123456
    volumes:

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// Domain

@Data
@Builder
public class Order {
    private Product product;
    private ShippingHistory shippingHistory;
    private Payment payment;
}

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package br.com.zeroth.zth_product_srv.services.impl;

import br.com.zeroth.zth_product_srv.domain.Order;
import br.com.zeroth.zth_product_srv.domain.Payment;
import br.com.zeroth.zth_product_srv.domain.Product;
import br.com.zeroth.zth_product_srv.domain.ShippingHistory;
import br.com.zeroth.zth_product_srv.services.OrderService;
import org.springframework.stereotype.Service;

@Service

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package br.com.zeroth.zth_product_srv.services;

import br.com.zeroth.zth_product_srv.domain.Order;

public interface OrderService {

    Order getOrderWithDetails(Long orderId);
}

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package br.com.zeroth.zth_product_srv.controller;

import br.com.zeroth.zth_product_srv.domain.Order;
import br.com.zeroth.zth_product_srv.services.OrderService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;

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package br.com.zeroth.zth_product_srv.config;

import jakarta.servlet.Filter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.CacheControl;
import org.springframework.web.filter.ShallowEtagHeaderFilter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;