diff --git a/READMEpruebaJorge.md b/READMEpruebaJorge.md new file mode 100644 index 00000000..ea6a597b --- /dev/null +++ b/READMEpruebaJorge.md @@ -0,0 +1,229 @@ +# API de Productos Similares con Spring Boot y docker + +## Objetivo + +Crear un endpoint que, dado un producto, devuelva los detalles completos de sus productos similares mediante: +- Llamada al servicio de IDs similares: `GET /product/{id}/similarids` +- Llamadas paralelas al servicio de detalles: `GET /product/{id}` +- Manejo resiliente de errores (productos no disponibles) + +## Stack Tecnológico + +- **Java 21** +- **Spring Boot 3.5.x** +- **Spring WebFlux** - Para llamadas HTTP reactivas y paralelas +- **Lombok** - Reducción de código boilerplate +- **Maven** - Gestión de dependencias + +## Estructura del Proyecto + +``` +src/ +├── main/ +│ ├── java/ +│ │ └── com/example/demo/ +│ │ ├── DemoApplication.java # Clase principal +│ │ ├── controller/ +│ │ │ └── ProductController.java # REST Controller +│ │ ├── service/ +│ │ │ └── ProductService.java # Lógica de negocio +│ │ ├── client/ +│ │ │ └── ProductClient.java # Cliente HTTP +│ │ └── model/ +│ │ └── Product.java # Modelo de datos +│ └── resources/ +│ └── application.properties # Configuración +└── test/ +``` + +## Requisitos Previos + +### 2. Tener Java, Maven y Docker Desktop + +### 3. Configuración de Spring Boot + +En `src/main/resources/application.properties`: + +```properties +# Puerto de la aplicación +server.port=5000 + +# URLs de los servicios mock +product.service.baseurl=http://localhost:3001 +``` + +## Implementación + +### 1. Modelo de Datos (`Product.java`) + +```java +package com.example.demo.model; + +import lombok.AllArgsConstructor; +import lombok.Data; +import lombok.NoArgsConstructor; + +@Data +@AllArgsConstructor +@NoArgsConstructor +public class Product { + private String id; + private String name; + private double price; + private boolean availability; +} +``` + +**Características:** +- `@Data`: Genera getters, setters, toString, equals y hashCode +- `@AllArgsConstructor`: Constructor con todos los parámetros +- `@NoArgsConstructor`: Constructor vacío (necesario para deserialización) + +### 2. Controller (`ProductController.java`) + +```java +package com.example.demo.controller; + +import com.example.demo.model.Product; +import com.example.demo.service.ProductService; +import org.springframework.web.bind.annotation.*; +import java.util.List; + +@RestController +@RequestMapping("/product") +public class ProductController { + + private final ProductService productService; + + public ProductController(ProductService productService) { + this.productService = productService; + } + + @GetMapping("/{productId}/similar") + public List getSimilarProducts(@PathVariable String productId) { + return productService.getSimilarProductsWithDetails(productId); + } +} +``` + +**Puntos clave:** +- `@RestController`: Combina `@Controller` + `@ResponseBody` +- `@GetMapping`: Mapea peticiones HTTP GET +- `@PathVariable`: Extrae variables de la URL +- Inyección de dependencias vía constructor (recomendado sobre `@Autowired`) + +### 3. Cliente HTTP (`ProductClient.java`) + +```java +package com.example.demo.client; + +import com.example.demo.model.Product; +import org.springframework.stereotype.Component; +import org.springframework.web.reactive.function.client.WebClient; +import reactor.core.publisher.Mono; + +import java.util.List; + +@Component +public class ProductClient { + + private final WebClient webClient; + + public ProductClient(WebClient.Builder webClientBuilder) { + this.webClient = webClientBuilder + .baseUrl("http://localhost:3001") + .build(); + } + + public List getSimilarProductIds(String productId) { + return webClient.get() + .uri("/product/{id}/similarids", productId) + .retrieve() + .bodyToMono(List.class) + .block(); + } + + public Mono getProductDetail(String productId) { + return webClient.get() + .uri("/product/{id}", productId) + .retrieve() + .bodyToMono(Product.class) + .onErrorResume(error -> Mono.empty()); + } +} +``` + +**Características importantes:** +- **WebClient**: Cliente HTTP reactivo (reemplazo de RestTemplate) +- **Mono**: Representa 0 o 1 elemento asíncrono +- **onErrorResume(Mono.empty())**: Manejo resiliente - continúa si un producto falla +- **block()**: Convierte operación asíncrona a síncrona (solo para IDs) + +### 4. Servicio (`ProductService.java`) + +```java +package com.example.demo.service; + +import com.example.demo.client.ProductClient; +import com.example.demo.model.Product; +import org.springframework.stereotype.Service; +import reactor.core.publisher.Flux; + +import java.util.List; + +@Service +public class ProductService { + + private final ProductClient productClient; + + public ProductService(ProductClient productClient) { + this.productClient = productClient; + } + + public List getSimilarProductsWithDetails(String productId) { + // 1. Obtener IDs de productos similares + List similarIds = productClient.getSimilarProductIds(productId); + + // 2. Obtener detalles en PARALELO y filtrar nulls + return Flux.fromIterable(similarIds) + .flatMap(id -> productClient.getProductDetail(id)) + .collectList() + .block(); + } +} +``` + +**Flujo de ejecución:** +1. Obtiene lista de IDs similares de forma síncrona +2. `Flux.fromIterable()`: Convierte lista en stream reactivo +3. `flatMap()`: Ejecuta llamadas HTTP **en paralelo** +4. Productos con error se filtran automáticamente (Mono.empty()) +5. `collectList()`: Agrupa resultados +6. `block()`: Espera a que terminen todas las llamadas + +## Rendimiento y Optimización + +### Llamadas Paralelas vs Secuenciales + +**Escenario:** Producto tiene 3 similares [2, 3, 1000] +- Producto 2: 10ms +- Producto 3: 100ms (delay configurado en mock) +- Producto 1000: 5000ms (delay configurado en mock) + +**Secuencial:** +``` +Total = 10ms + 100ms + 5000ms = 5110ms +``` + +**Paralelo (el usado):** +``` +Total = max(10ms, 100ms, 5000ms) = 5000ms +``` + +**Mejora:** ~10ms de diferencia no parece mucho, pero con más productos la diferencia es exponencial. + +### Manejo de Errores + +Productos que fallan (5, 6 en mocks) **no rompen** la respuesta completa: +- **Correcto:** Devolver solo productos exitosos +- **Incorrecto:** Fallar toda la petición por un producto diff --git a/demo/.gitattributes b/demo/.gitattributes new file mode 100644 index 00000000..3b41682a --- /dev/null +++ b/demo/.gitattributes @@ -0,0 +1,2 @@ +/mvnw text eol=lf +*.cmd text eol=crlf diff --git a/demo/.gitignore b/demo/.gitignore new file mode 100644 index 00000000..7291f849 --- /dev/null +++ b/demo/.gitignore @@ -0,0 +1,36 @@ +### El zip generado por springboot initializr ### +*.zip + +HELP.md +target/ +.mvn/wrapper/maven-wrapper.jar +!**/src/main/**/target/ +!**/src/test/**/target/ + +### STS ### +.apt_generated +.classpath +.factorypath +.project +.settings +.springBeans +.sts4-cache + +### IntelliJ IDEA ### +.idea +*.iws +*.iml +*.ipr + +### NetBeans ### +/nbproject/private/ +/nbbuild/ +/dist/ +/nbdist/ +/.nb-gradle/ +build/ +!**/src/main/**/build/ +!**/src/test/**/build/ + +### VS Code ### +.vscode/ diff --git a/demo/.mvn/wrapper/maven-wrapper.properties b/demo/.mvn/wrapper/maven-wrapper.properties new file mode 100644 index 00000000..c0bcafe9 --- /dev/null +++ b/demo/.mvn/wrapper/maven-wrapper.properties @@ -0,0 +1,3 @@ +wrapperVersion=3.3.4 +distributionType=only-script +distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.11/apache-maven-3.9.11-bin.zip diff --git a/demo/mvnw b/demo/mvnw new file mode 100644 index 00000000..bd8896bf --- /dev/null +++ b/demo/mvnw @@ -0,0 +1,295 @@ +#!/bin/sh +# ---------------------------------------------------------------------------- +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, +# software distributed under the License is distributed on an +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +# KIND, either express or implied. See the License for the +# specific language governing permissions and limitations +# under the License. +# ---------------------------------------------------------------------------- + +# ---------------------------------------------------------------------------- +# Apache Maven Wrapper startup batch script, version 3.3.4 +# +# Optional ENV vars +# ----------------- +# JAVA_HOME - location of a JDK home dir, required when download maven via java source +# MVNW_REPOURL - repo url base for downloading maven distribution +# MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven +# MVNW_VERBOSE - true: enable verbose log; debug: trace the mvnw script; others: silence the output +# ---------------------------------------------------------------------------- + +set -euf +[ "${MVNW_VERBOSE-}" != debug ] || set -x + +# OS specific support. +native_path() { printf %s\\n "$1"; } +case "$(uname)" in +CYGWIN* | MINGW*) + [ -z "${JAVA_HOME-}" ] || JAVA_HOME="$(cygpath --unix "$JAVA_HOME")" + native_path() { cygpath --path --windows "$1"; } + ;; +esac + +# set JAVACMD and JAVACCMD +set_java_home() { + # For Cygwin and MinGW, ensure paths are in Unix format before anything is touched + if [ -n "${JAVA_HOME-}" ]; then + if [ -x "$JAVA_HOME/jre/sh/java" ]; then + # IBM's JDK on AIX uses strange locations for the executables + JAVACMD="$JAVA_HOME/jre/sh/java" + JAVACCMD="$JAVA_HOME/jre/sh/javac" + else + JAVACMD="$JAVA_HOME/bin/java" + JAVACCMD="$JAVA_HOME/bin/javac" + + if [ ! -x "$JAVACMD" ] || [ ! -x "$JAVACCMD" ]; then + echo "The JAVA_HOME environment variable is not defined correctly, so mvnw cannot run." >&2 + echo "JAVA_HOME is set to \"$JAVA_HOME\", but \"\$JAVA_HOME/bin/java\" or \"\$JAVA_HOME/bin/javac\" does not exist." >&2 + return 1 + fi + fi + else + JAVACMD="$( + 'set' +e + 'unset' -f command 2>/dev/null + 'command' -v java + )" || : + JAVACCMD="$( + 'set' +e + 'unset' -f command 2>/dev/null + 'command' -v javac + )" || : + + if [ ! -x "${JAVACMD-}" ] || [ ! -x "${JAVACCMD-}" ]; then + echo "The java/javac command does not exist in PATH nor is JAVA_HOME set, so mvnw cannot run." >&2 + return 1 + fi + fi +} + +# hash string like Java String::hashCode +hash_string() { + str="${1:-}" h=0 + while [ -n "$str" ]; do + char="${str%"${str#?}"}" + h=$(((h * 31 + $(LC_CTYPE=C printf %d "'$char")) % 4294967296)) + str="${str#?}" + done + printf %x\\n $h +} + +verbose() { :; } +[ "${MVNW_VERBOSE-}" != true ] || verbose() { printf %s\\n "${1-}"; } + +die() { + printf %s\\n "$1" >&2 + exit 1 +} + +trim() { + # MWRAPPER-139: + # Trims trailing and leading whitespace, carriage returns, tabs, and linefeeds. + # Needed for removing poorly interpreted newline sequences when running in more + # exotic environments such as mingw bash on Windows. + printf "%s" "${1}" | tr -d '[:space:]' +} + +scriptDir="$(dirname "$0")" +scriptName="$(basename "$0")" + +# parse distributionUrl and optional distributionSha256Sum, requires .mvn/wrapper/maven-wrapper.properties +while IFS="=" read -r key value; do + case "${key-}" in + distributionUrl) distributionUrl=$(trim "${value-}") ;; + distributionSha256Sum) distributionSha256Sum=$(trim "${value-}") ;; + esac +done <"$scriptDir/.mvn/wrapper/maven-wrapper.properties" +[ -n "${distributionUrl-}" ] || die "cannot read distributionUrl property in $scriptDir/.mvn/wrapper/maven-wrapper.properties" + +case "${distributionUrl##*/}" in +maven-mvnd-*bin.*) + MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/ + case "${PROCESSOR_ARCHITECTURE-}${PROCESSOR_ARCHITEW6432-}:$(uname -a)" in + *AMD64:CYGWIN* | *AMD64:MINGW*) distributionPlatform=windows-amd64 ;; + :Darwin*x86_64) distributionPlatform=darwin-amd64 ;; + :Darwin*arm64) distributionPlatform=darwin-aarch64 ;; + :Linux*x86_64*) distributionPlatform=linux-amd64 ;; + *) + echo "Cannot detect native platform for mvnd on $(uname)-$(uname -m), use pure java version" >&2 + distributionPlatform=linux-amd64 + ;; + esac + distributionUrl="${distributionUrl%-bin.*}-$distributionPlatform.zip" + ;; +maven-mvnd-*) MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/ ;; +*) MVN_CMD="mvn${scriptName#mvnw}" _MVNW_REPO_PATTERN=/org/apache/maven/ ;; +esac + +# apply MVNW_REPOURL and calculate MAVEN_HOME +# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-,maven-mvnd--}/ +[ -z "${MVNW_REPOURL-}" ] || distributionUrl="$MVNW_REPOURL$_MVNW_REPO_PATTERN${distributionUrl#*"$_MVNW_REPO_PATTERN"}" +distributionUrlName="${distributionUrl##*/}" +distributionUrlNameMain="${distributionUrlName%.*}" +distributionUrlNameMain="${distributionUrlNameMain%-bin}" +MAVEN_USER_HOME="${MAVEN_USER_HOME:-${HOME}/.m2}" +MAVEN_HOME="${MAVEN_USER_HOME}/wrapper/dists/${distributionUrlNameMain-}/$(hash_string "$distributionUrl")" + +exec_maven() { + unset MVNW_VERBOSE MVNW_USERNAME MVNW_PASSWORD MVNW_REPOURL || : + exec "$MAVEN_HOME/bin/$MVN_CMD" "$@" || die "cannot exec $MAVEN_HOME/bin/$MVN_CMD" +} + +if [ -d "$MAVEN_HOME" ]; then + verbose "found existing MAVEN_HOME at $MAVEN_HOME" + exec_maven "$@" +fi + +case "${distributionUrl-}" in +*?-bin.zip | *?maven-mvnd-?*-?*.zip) ;; +*) die "distributionUrl is not valid, must match *-bin.zip or maven-mvnd-*.zip, but found '${distributionUrl-}'" ;; +esac + +# prepare tmp dir +if TMP_DOWNLOAD_DIR="$(mktemp -d)" && [ -d "$TMP_DOWNLOAD_DIR" ]; then + clean() { rm -rf -- "$TMP_DOWNLOAD_DIR"; } + trap clean HUP INT TERM EXIT +else + die "cannot create temp dir" +fi + +mkdir -p -- "${MAVEN_HOME%/*}" + +# Download and Install Apache Maven +verbose "Couldn't find MAVEN_HOME, downloading and installing it ..." +verbose "Downloading from: $distributionUrl" +verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName" + +# select .zip or .tar.gz +if ! command -v unzip >/dev/null; then + distributionUrl="${distributionUrl%.zip}.tar.gz" + distributionUrlName="${distributionUrl##*/}" +fi + +# verbose opt +__MVNW_QUIET_WGET=--quiet __MVNW_QUIET_CURL=--silent __MVNW_QUIET_UNZIP=-q __MVNW_QUIET_TAR='' +[ "${MVNW_VERBOSE-}" != true ] || __MVNW_QUIET_WGET='' __MVNW_QUIET_CURL='' __MVNW_QUIET_UNZIP='' __MVNW_QUIET_TAR=v + +# normalize http auth +case "${MVNW_PASSWORD:+has-password}" in +'') MVNW_USERNAME='' MVNW_PASSWORD='' ;; +has-password) [ -n "${MVNW_USERNAME-}" ] || MVNW_USERNAME='' MVNW_PASSWORD='' ;; +esac + +if [ -z "${MVNW_USERNAME-}" ] && command -v wget >/dev/null; then + verbose "Found wget ... using wget" + wget ${__MVNW_QUIET_WGET:+"$__MVNW_QUIET_WGET"} "$distributionUrl" -O "$TMP_DOWNLOAD_DIR/$distributionUrlName" || die "wget: Failed to fetch $distributionUrl" +elif [ -z "${MVNW_USERNAME-}" ] && command -v curl >/dev/null; then + verbose "Found curl ... using curl" + curl ${__MVNW_QUIET_CURL:+"$__MVNW_QUIET_CURL"} -f -L -o "$TMP_DOWNLOAD_DIR/$distributionUrlName" "$distributionUrl" || die "curl: Failed to fetch $distributionUrl" +elif set_java_home; then + verbose "Falling back to use Java to download" + javaSource="$TMP_DOWNLOAD_DIR/Downloader.java" + targetZip="$TMP_DOWNLOAD_DIR/$distributionUrlName" + cat >"$javaSource" <<-END + public class Downloader extends java.net.Authenticator + { + protected java.net.PasswordAuthentication getPasswordAuthentication() + { + return new java.net.PasswordAuthentication( System.getenv( "MVNW_USERNAME" ), System.getenv( "MVNW_PASSWORD" ).toCharArray() ); + } + public static void main( String[] args ) throws Exception + { + setDefault( new Downloader() ); + java.nio.file.Files.copy( java.net.URI.create( args[0] ).toURL().openStream(), java.nio.file.Paths.get( args[1] ).toAbsolutePath().normalize() ); + } + } + END + # For Cygwin/MinGW, switch paths to Windows format before running javac and java + verbose " - Compiling Downloader.java ..." + "$(native_path "$JAVACCMD")" "$(native_path "$javaSource")" || die "Failed to compile Downloader.java" + verbose " - Running Downloader.java ..." + "$(native_path "$JAVACMD")" -cp "$(native_path "$TMP_DOWNLOAD_DIR")" Downloader "$distributionUrl" "$(native_path "$targetZip")" +fi + +# If specified, validate the SHA-256 sum of the Maven distribution zip file +if [ -n "${distributionSha256Sum-}" ]; then + distributionSha256Result=false + if [ "$MVN_CMD" = mvnd.sh ]; then + echo "Checksum validation is not supported for maven-mvnd." >&2 + echo "Please disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2 + exit 1 + elif command -v sha256sum >/dev/null; then + if echo "$distributionSha256Sum $TMP_DOWNLOAD_DIR/$distributionUrlName" | sha256sum -c - >/dev/null 2>&1; then + distributionSha256Result=true + fi + elif command -v shasum >/dev/null; then + if echo "$distributionSha256Sum $TMP_DOWNLOAD_DIR/$distributionUrlName" | shasum -a 256 -c >/dev/null 2>&1; then + distributionSha256Result=true + fi + else + echo "Checksum validation was requested but neither 'sha256sum' or 'shasum' are available." >&2 + echo "Please install either command, or disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2 + exit 1 + fi + if [ $distributionSha256Result = false ]; then + echo "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised." >&2 + echo "If you updated your Maven version, you need to update the specified distributionSha256Sum property." >&2 + exit 1 + fi +fi + +# unzip and move +if command -v unzip >/dev/null; then + unzip ${__MVNW_QUIET_UNZIP:+"$__MVNW_QUIET_UNZIP"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -d "$TMP_DOWNLOAD_DIR" || die "failed to unzip" +else + tar xzf${__MVNW_QUIET_TAR:+"$__MVNW_QUIET_TAR"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -C "$TMP_DOWNLOAD_DIR" || die "failed to untar" +fi + +# Find the actual extracted directory name (handles snapshots where filename != directory name) +actualDistributionDir="" + +# First try the expected directory name (for regular distributions) +if [ -d "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain" ]; then + if [ -f "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain/bin/$MVN_CMD" ]; then + actualDistributionDir="$distributionUrlNameMain" + fi +fi + +# If not found, search for any directory with the Maven executable (for snapshots) +if [ -z "$actualDistributionDir" ]; then + # enable globbing to iterate over items + set +f + for dir in "$TMP_DOWNLOAD_DIR"/*; do + if [ -d "$dir" ]; then + if [ -f "$dir/bin/$MVN_CMD" ]; then + actualDistributionDir="$(basename "$dir")" + break + fi + fi + done + set -f +fi + +if [ -z "$actualDistributionDir" ]; then + verbose "Contents of $TMP_DOWNLOAD_DIR:" + verbose "$(ls -la "$TMP_DOWNLOAD_DIR")" + die "Could not find Maven distribution directory in extracted archive" +fi + +verbose "Found extracted Maven distribution directory: $actualDistributionDir" +printf %s\\n "$distributionUrl" >"$TMP_DOWNLOAD_DIR/$actualDistributionDir/mvnw.url" +mv -- "$TMP_DOWNLOAD_DIR/$actualDistributionDir" "$MAVEN_HOME" || [ -d "$MAVEN_HOME" ] || die "fail to move MAVEN_HOME" + +clean || : +exec_maven "$@" diff --git a/demo/mvnw.cmd b/demo/mvnw.cmd new file mode 100644 index 00000000..92450f93 --- /dev/null +++ b/demo/mvnw.cmd @@ -0,0 +1,189 @@ +<# : batch portion +@REM ---------------------------------------------------------------------------- +@REM Licensed to the Apache Software Foundation (ASF) under one +@REM or more contributor license agreements. See the NOTICE file +@REM distributed with this work for additional information +@REM regarding copyright ownership. The ASF licenses this file +@REM to you under the Apache License, Version 2.0 (the +@REM "License"); you may not use this file except in compliance +@REM with the License. You may obtain a copy of the License at +@REM +@REM http://www.apache.org/licenses/LICENSE-2.0 +@REM +@REM Unless required by applicable law or agreed to in writing, +@REM software distributed under the License is distributed on an +@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +@REM KIND, either express or implied. See the License for the +@REM specific language governing permissions and limitations +@REM under the License. +@REM ---------------------------------------------------------------------------- + +@REM ---------------------------------------------------------------------------- +@REM Apache Maven Wrapper startup batch script, version 3.3.4 +@REM +@REM Optional ENV vars +@REM MVNW_REPOURL - repo url base for downloading maven distribution +@REM MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven +@REM MVNW_VERBOSE - true: enable verbose log; others: silence the output +@REM ---------------------------------------------------------------------------- + +@IF "%__MVNW_ARG0_NAME__%"=="" (SET __MVNW_ARG0_NAME__=%~nx0) +@SET __MVNW_CMD__= +@SET __MVNW_ERROR__= +@SET __MVNW_PSMODULEP_SAVE=%PSModulePath% +@SET PSModulePath= +@FOR /F "usebackq tokens=1* delims==" %%A IN (`powershell -noprofile "& {$scriptDir='%~dp0'; $script='%__MVNW_ARG0_NAME__%'; icm -ScriptBlock ([Scriptblock]::Create((Get-Content -Raw '%~f0'))) -NoNewScope}"`) DO @( + IF "%%A"=="MVN_CMD" (set __MVNW_CMD__=%%B) ELSE IF "%%B"=="" (echo %%A) ELSE (echo %%A=%%B) +) +@SET PSModulePath=%__MVNW_PSMODULEP_SAVE% +@SET __MVNW_PSMODULEP_SAVE= +@SET __MVNW_ARG0_NAME__= +@SET MVNW_USERNAME= +@SET MVNW_PASSWORD= +@IF NOT "%__MVNW_CMD__%"=="" ("%__MVNW_CMD__%" %*) +@echo Cannot start maven from wrapper >&2 && exit /b 1 +@GOTO :EOF +: end batch / begin powershell #> + +$ErrorActionPreference = "Stop" +if ($env:MVNW_VERBOSE -eq "true") { + $VerbosePreference = "Continue" +} + +# calculate distributionUrl, requires .mvn/wrapper/maven-wrapper.properties +$distributionUrl = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionUrl +if (!$distributionUrl) { + Write-Error "cannot read distributionUrl property in $scriptDir/.mvn/wrapper/maven-wrapper.properties" +} + +switch -wildcard -casesensitive ( $($distributionUrl -replace '^.*/','') ) { + "maven-mvnd-*" { + $USE_MVND = $true + $distributionUrl = $distributionUrl -replace '-bin\.[^.]*$',"-windows-amd64.zip" + $MVN_CMD = "mvnd.cmd" + break + } + default { + $USE_MVND = $false + $MVN_CMD = $script -replace '^mvnw','mvn' + break + } +} + +# apply MVNW_REPOURL and calculate MAVEN_HOME +# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-,maven-mvnd--}/ +if ($env:MVNW_REPOURL) { + $MVNW_REPO_PATTERN = if ($USE_MVND -eq $False) { "/org/apache/maven/" } else { "/maven/mvnd/" } + $distributionUrl = "$env:MVNW_REPOURL$MVNW_REPO_PATTERN$($distributionUrl -replace "^.*$MVNW_REPO_PATTERN",'')" +} +$distributionUrlName = $distributionUrl -replace '^.*/','' +$distributionUrlNameMain = $distributionUrlName -replace '\.[^.]*$','' -replace '-bin$','' + +$MAVEN_M2_PATH = "$HOME/.m2" +if ($env:MAVEN_USER_HOME) { + $MAVEN_M2_PATH = "$env:MAVEN_USER_HOME" +} + +if (-not (Test-Path -Path $MAVEN_M2_PATH)) { + New-Item -Path $MAVEN_M2_PATH -ItemType Directory | Out-Null +} + +$MAVEN_WRAPPER_DISTS = $null +if ((Get-Item $MAVEN_M2_PATH).Target[0] -eq $null) { + $MAVEN_WRAPPER_DISTS = "$MAVEN_M2_PATH/wrapper/dists" +} else { + $MAVEN_WRAPPER_DISTS = (Get-Item $MAVEN_M2_PATH).Target[0] + "/wrapper/dists" +} + +$MAVEN_HOME_PARENT = "$MAVEN_WRAPPER_DISTS/$distributionUrlNameMain" +$MAVEN_HOME_NAME = ([System.Security.Cryptography.SHA256]::Create().ComputeHash([byte[]][char[]]$distributionUrl) | ForEach-Object {$_.ToString("x2")}) -join '' +$MAVEN_HOME = "$MAVEN_HOME_PARENT/$MAVEN_HOME_NAME" + +if (Test-Path -Path "$MAVEN_HOME" -PathType Container) { + Write-Verbose "found existing MAVEN_HOME at $MAVEN_HOME" + Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD" + exit $? +} + +if (! $distributionUrlNameMain -or ($distributionUrlName -eq $distributionUrlNameMain)) { + Write-Error "distributionUrl is not valid, must end with *-bin.zip, but found $distributionUrl" +} + +# prepare tmp dir +$TMP_DOWNLOAD_DIR_HOLDER = New-TemporaryFile +$TMP_DOWNLOAD_DIR = New-Item -Itemtype Directory -Path "$TMP_DOWNLOAD_DIR_HOLDER.dir" +$TMP_DOWNLOAD_DIR_HOLDER.Delete() | Out-Null +trap { + if ($TMP_DOWNLOAD_DIR.Exists) { + try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null } + catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" } + } +} + +New-Item -Itemtype Directory -Path "$MAVEN_HOME_PARENT" -Force | Out-Null + +# Download and Install Apache Maven +Write-Verbose "Couldn't find MAVEN_HOME, downloading and installing it ..." +Write-Verbose "Downloading from: $distributionUrl" +Write-Verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName" + +$webclient = New-Object System.Net.WebClient +if ($env:MVNW_USERNAME -and $env:MVNW_PASSWORD) { + $webclient.Credentials = New-Object System.Net.NetworkCredential($env:MVNW_USERNAME, $env:MVNW_PASSWORD) +} +[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12 +$webclient.DownloadFile($distributionUrl, "$TMP_DOWNLOAD_DIR/$distributionUrlName") | Out-Null + +# If specified, validate the SHA-256 sum of the Maven distribution zip file +$distributionSha256Sum = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionSha256Sum +if ($distributionSha256Sum) { + if ($USE_MVND) { + Write-Error "Checksum validation is not supported for maven-mvnd. `nPlease disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." + } + Import-Module $PSHOME\Modules\Microsoft.PowerShell.Utility -Function Get-FileHash + if ((Get-FileHash "$TMP_DOWNLOAD_DIR/$distributionUrlName" -Algorithm SHA256).Hash.ToLower() -ne $distributionSha256Sum) { + Write-Error "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised. If you updated your Maven version, you need to update the specified distributionSha256Sum property." + } +} + +# unzip and move +Expand-Archive "$TMP_DOWNLOAD_DIR/$distributionUrlName" -DestinationPath "$TMP_DOWNLOAD_DIR" | Out-Null + +# Find the actual extracted directory name (handles snapshots where filename != directory name) +$actualDistributionDir = "" + +# First try the expected directory name (for regular distributions) +$expectedPath = Join-Path "$TMP_DOWNLOAD_DIR" "$distributionUrlNameMain" +$expectedMvnPath = Join-Path "$expectedPath" "bin/$MVN_CMD" +if ((Test-Path -Path $expectedPath -PathType Container) -and (Test-Path -Path $expectedMvnPath -PathType Leaf)) { + $actualDistributionDir = $distributionUrlNameMain +} + +# If not found, search for any directory with the Maven executable (for snapshots) +if (!$actualDistributionDir) { + Get-ChildItem -Path "$TMP_DOWNLOAD_DIR" -Directory | ForEach-Object { + $testPath = Join-Path $_.FullName "bin/$MVN_CMD" + if (Test-Path -Path $testPath -PathType Leaf) { + $actualDistributionDir = $_.Name + } + } +} + +if (!$actualDistributionDir) { + Write-Error "Could not find Maven distribution directory in extracted archive" +} + +Write-Verbose "Found extracted Maven distribution directory: $actualDistributionDir" +Rename-Item -Path "$TMP_DOWNLOAD_DIR/$actualDistributionDir" -NewName $MAVEN_HOME_NAME | Out-Null +try { + Move-Item -Path "$TMP_DOWNLOAD_DIR/$MAVEN_HOME_NAME" -Destination $MAVEN_HOME_PARENT | Out-Null +} catch { + if (! (Test-Path -Path "$MAVEN_HOME" -PathType Container)) { + Write-Error "fail to move MAVEN_HOME" + } +} finally { + try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null } + catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" } +} + +Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD" diff --git a/demo/pom.xml b/demo/pom.xml new file mode 100644 index 00000000..21f6fe01 --- /dev/null +++ b/demo/pom.xml @@ -0,0 +1,94 @@ + + + 4.0.0 + + org.springframework.boot + spring-boot-starter-parent + 3.5.6 + + + com.example + demo + 0.0.1-SNAPSHOT + backendPrueba + PruebaDemo para ITX de backend + + + + + + + + + + + + + + + 21 + + + + org.springframework.boot + spring-boot-starter-web + + + org.springframework.boot + spring-boot-starter-webflux + + + + org.springframework.boot + spring-boot-devtools + runtime + true + + + org.projectlombok + lombok + true + + + org.springframework.boot + spring-boot-starter-test + test + + + io.projectreactor + reactor-test + test + + + + + + + org.apache.maven.plugins + maven-compiler-plugin + + + + org.projectlombok + lombok + + + + + + org.springframework.boot + spring-boot-maven-plugin + + + + org.projectlombok + lombok + + + + + + + + diff --git a/demo/src/main/java/com/example/demo/BackendPruebaApplication.java b/demo/src/main/java/com/example/demo/BackendPruebaApplication.java new file mode 100644 index 00000000..6c9723b6 --- /dev/null +++ b/demo/src/main/java/com/example/demo/BackendPruebaApplication.java @@ -0,0 +1,13 @@ +package com.example.demo; + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.SpringBootApplication; + +@SpringBootApplication +public class BackendPruebaApplication { + + public static void main(String[] args) { + SpringApplication.run(BackendPruebaApplication.class, args); + } + +} diff --git a/demo/src/main/java/com/example/demo/client/ExternalApiClient.java b/demo/src/main/java/com/example/demo/client/ExternalApiClient.java new file mode 100644 index 00000000..20fc355e --- /dev/null +++ b/demo/src/main/java/com/example/demo/client/ExternalApiClient.java @@ -0,0 +1,71 @@ +package com.example.demo.client; + +import com.example.demo.model.Product; +import org.springframework.beans.factory.annotation.Value; +import org.springframework.stereotype.Component; +import org.springframework.web.reactive.function.client.WebClient; +import org.springframework.web.reactive.function.client.WebClientResponseException; +import reactor.core.publisher.Mono; +import java.time.Duration; +import java.util.List; +import org.springframework.core.ParameterizedTypeReference; + +@Component +public class ExternalApiClient { + + private final WebClient webClient; + private final Duration timeout; + + public ExternalApiClient( + @Value("${api.base.url}") String baseUrl, + @Value("${api.timeout.seconds}") int timeoutSeconds) { + + this.webClient = WebClient.builder() + .baseUrl(baseUrl) + .build(); + this.timeout = Duration.ofSeconds(timeoutSeconds); + } + + public Mono> getSimilarIds(String productId) { + return webClient.get() + .uri("/product/{id}/similarids", productId) + .retrieve() + .bodyToMono(String[].class) // Primero como array + .map(array -> List.of(array)) // Luego convertir a List + .timeout(timeout) + .onErrorReturn(List.of()); + } + + public Mono getProductDetails(String productId) { + return webClient.get() + .uri("/product/{id}", productId) + .retrieve() + .bodyToMono(Product.class) + .timeout(timeout) + .onErrorResume(error -> { + // TODO: ELIMINAR ESTOS LOGS EN PRODUCCIÓN - Solo para debugging de prueba + // técnica + String errorMsg = "Error obteniendo producto " + productId; + + if (error instanceof WebClientResponseException) { + WebClientResponseException webError = (WebClientResponseException) error; + errorMsg += " - Status: " + webError.getStatusCode(); + System.err.println(errorMsg); + + // Si es 404 o 500, es "esperado" según los mocks + if (webError.getStatusCode().value() == 404) { + System.err.println(" → Producto " + productId + " no existe (404)"); + } else if (webError.getStatusCode().value() == 500) { + System.err.println(" → Error del servidor para producto " + productId + " (500)"); + } + } else if (error.getMessage() != null && error.getMessage().contains("timeout")) { + System.err.println(errorMsg + " - TIMEOUT después de " + timeout.getSeconds() + " segundos"); + } else { + System.err.println( + errorMsg + " - " + error.getClass().getSimpleName() + ": " + error.getMessage()); + } + + return Mono.empty(); + }); + } +} \ No newline at end of file diff --git a/demo/src/main/java/com/example/demo/controller/ProductController.java b/demo/src/main/java/com/example/demo/controller/ProductController.java new file mode 100644 index 00000000..d03c70fa --- /dev/null +++ b/demo/src/main/java/com/example/demo/controller/ProductController.java @@ -0,0 +1,23 @@ +package com.example.demo.controller; + +import com.example.demo.service.ProductService; +import com.example.demo.model.Product; +import org.springframework.web.bind.annotation.*; +import java.util.List; + +@RestController +@RequestMapping("/product") +public class ProductController { + + private final ProductService productService; + + // Constructor injection - Spring lo inyecta automáticamente + public ProductController(ProductService productService) { + this.productService = productService; + } + + @GetMapping("/{productId}/similar") + public List getSimilarProducts(@PathVariable String productId) { + return productService.getSimilarProducts(productId); + } +} \ No newline at end of file diff --git a/demo/src/main/java/com/example/demo/model/Product.java b/demo/src/main/java/com/example/demo/model/Product.java new file mode 100644 index 00000000..353bf338 --- /dev/null +++ b/demo/src/main/java/com/example/demo/model/Product.java @@ -0,0 +1,15 @@ +package com.example.demo.model; + +import lombok.AllArgsConstructor; +import lombok.Data; +import lombok.NoArgsConstructor; + +@Data +@NoArgsConstructor +@AllArgsConstructor +public class Product { + private String id; + private String name; + private Double price; + private Boolean availability; +} \ No newline at end of file diff --git a/demo/src/main/java/com/example/demo/service/ProductService.java b/demo/src/main/java/com/example/demo/service/ProductService.java new file mode 100644 index 00000000..60f74fcd --- /dev/null +++ b/demo/src/main/java/com/example/demo/service/ProductService.java @@ -0,0 +1,45 @@ +package com.example.demo.service; + +import com.example.demo.client.ExternalApiClient; +import com.example.demo.model.Product; +import org.springframework.stereotype.Service; +import reactor.core.publisher.Flux; +import reactor.core.publisher.Mono; +import reactor.core.scheduler.Schedulers; + +import java.util.List; + +@Service +public class ProductService { + + private final ExternalApiClient apiClient; + + public ProductService(ExternalApiClient apiClient) { + this.apiClient = apiClient; + } + + public List getSimilarProducts(String productId) { + // Primero: obtener los IDs similares + List similarIds = apiClient.getSimilarIds(productId) + .block(); // Bloquea y espera el resultado + + if (similarIds == null || similarIds.isEmpty()) { + System.err.println("No se encontraron productos similares para ID: " + productId); + return List.of(); + } + + System.out.println("Productos similares encontrados: " + similarIds); + + // Segundo: obtener detalles en PARALELO + return Flux.fromIterable(similarIds) + .parallel() // Activa paralelización + .runOn(Schedulers.parallel()) // Usa thread pool + .flatMap(id -> { + System.out.println("Obteniendo producto: " + id); + return apiClient.getProductDetails(String.valueOf(id)); + }) + .sequential() // Vuelve a secuencial para colectar + .collectList() + .block(); // Espera todos los resultados + } +} \ No newline at end of file diff --git a/demo/src/main/resources/application.properties b/demo/src/main/resources/application.properties new file mode 100644 index 00000000..9efb04aa --- /dev/null +++ b/demo/src/main/resources/application.properties @@ -0,0 +1,5 @@ +spring.application.name=backendPrueba +server.port=5000 + +api.timeout.seconds=10 +api.base.url=http://localhost:3001 \ No newline at end of file diff --git a/demo/src/test/java/com/example/demo/BackendPruebaApplicationTests.java b/demo/src/test/java/com/example/demo/BackendPruebaApplicationTests.java new file mode 100644 index 00000000..a0af275a --- /dev/null +++ b/demo/src/test/java/com/example/demo/BackendPruebaApplicationTests.java @@ -0,0 +1,13 @@ +package com.example.demo; + +import org.junit.jupiter.api.Test; +import org.springframework.boot.test.context.SpringBootTest; + +@SpringBootTest +class BackendPruebaApplicationTests { + + @Test + void contextLoads() { + } + +}