msaproduct commit

.gitignore

+HELP.md
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/

Dockerfile

+FROM openjdk:11.0.13-slim
+ARG JAR_FILE=build/libs/order-0.0.1-SNAPSHOT.jar
+COPY ${JAR_FILE} app.jar
+ENTRYPOINT ["java","-jar","/app.jar"]

README.md

+# Axon Framework 예제
+
+## 0. 개요
+이 예제는 쇼핑몰 예제로 CQRS와 SAGA Pattern을 이용해 보상 트랜잭션을 발행하는 예제입니다.
+
+기능은 아래 4가지 기능이 있습니다.
+
+1. product을 등록하고 
+2. 해당 product을 주문 하고
+3. 주문을 하면 product에서 개수를 차감 하고
+4. 개수가 부족하면 주문 상태를 CANCELED로 바꾸는 기능
+
+## 1. Axon Server실행
+
+이 프로젝트를 실행 하려면 Axon Server를 먼저 실행 해야 합니다.
+
+아래와 같이 Docker를 이용해 실행 할 수 있습니다.
+```
+$ docker run -d --name my-axon-server -p 8024:8024 -p 8124:8124 axoniq/axonserver
+```
+
+Docker없이 .jar을 다운받아서 바로 실행 할 수 있습니다.
+
+https://download.axoniq.io/axonserver/AxonServer.zip
+
+```
+$ java -jar axonserver.jar
+```
+
+
+## 2. API
+1. GET /product - 등록한 제품(product)을 조회합니다.
+
+2. GET /order - 등록한 주문을 조회 합니다.
+
+3. POST /product - 제품(product) 등록합니다.
+
+RequestBody
+```json
+{
+    "productId":"bedcceac-8587-430c-921c-637d0b151ca2", "quantity":30
+}
+```
+
+4. POST /order - 주문을 등록 합니다.
+ 
+RequestBody
+```json
+{
+    "name":"버티컬 마우스",
+    "quantity":30,
+    "price":10000
+}
+```
+
+## 실행 방법
+
+1. Axon Server실행
+2. Application실행

WebConfig

+package com.axon.order;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.HttpMethod;
+import org.springframework.web.servlet.config.annotation.CorsRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+@Configuration
+public class WebConfig implements WebMvcConfigurer {
+
+    @Override
+    public void addCorsMappings(CorsRegistry registry) {
+        registry.addMapping("/**")
+                .allowedMethods("*")
+                .allowedMethods(
+                        HttpMethod.GET.name(),
+                        HttpMethod.HEAD.name(),
+                        HttpMethod.POST.name(),
+                        HttpMethod.PUT.name(),
+                        HttpMethod.DELETE.name()
+                );
+    }
+}

axonconfigmap.yaml

+apiVersion: v1
+kind: ConfigMap
+metadata:
+    name: config-axon
+data:
+    AXON_AXONSERVER_SERVERS: localhost:8124
+#    AXON_AXONSERVER_SERVERS: ec2-15-164-22-248.ap-northeast-2.compute.amazonaws.com:8124

build.gradle

+plugins {
+    id 'org.springframework.boot' version '2.7.2'
+    id 'io.spring.dependency-management' version '1.0.12.RELEASE'
+    id 'java'
+}
+
+group = 'com.axon'
+version = '0.0.1-SNAPSHOT'
+sourceCompatibility = '11'
+
+configurations {
+    compileOnly {
+        extendsFrom annotationProcessor
+    }
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
+    implementation 'org.springframework.boot:spring-boot-starter-web'
+//    implementation 'mysql:mysql-connector-java'
+    implementation 'org.postgresql:postgresql'
+    compileOnly 'org.projectlombok:lombok'
+    runtimeOnly 'com.h2database:h2'
+    annotationProcessor 'org.projectlombok:lombok'
+    testImplementation 'org.springframework.boot:spring-boot-starter-test'
+    // https://mvnrepository.com/artifact/org.axonframework/axon-spring-boot-starter
+    implementation group: 'org.axonframework', name: 'axon-spring-boot-starter', version: '4.5.14' 
+
+}
+
+tasks.named('test') {
+    useJUnitPlatform()
+}

gradle/wrapper/gradle-wrapper.properties

+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.5-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed 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
+#
+#      https://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.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+APP_NAME="Gradle"
+APP_BASE_NAME=${0##*/}
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$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
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"

gradlew.bat

+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

settings.gradle

+rootProject.name = 'msaproduct'

src/main/java/com/axon/filter/CorsFilter.java

+package com.axon.filter;
+
+import org.springframework.core.Ordered;
+import org.springframework.core.annotation.Order;
+import org.springframework.stereotype.Component;
+
+import javax.servlet.*;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+
+@Component
+@Order(Ordered.HIGHEST_PRECEDENCE)
+public class CorsFilter implements Filter {
+
+    @Override
+    public void init(FilterConfig filterConfig) throws ServletException {
+
+    }
+
+    @Override
+    public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
+        HttpServletRequest request = (HttpServletRequest) req;
+        HttpServletResponse response = (HttpServletResponse) res;
+
+        //여기에 내가 허용하고자 하는 클라이언트의 url을 입력해 줍니다.
+        //주의사항 "https://myurl.com/" 처럼 마지막에 '/'를 붙이면 CORS에러가 그대로 발생하게 됩니다.
+        //response.setHeader("Access-Control-Allow-Origin", "http://localhost:3000");
+        response.setHeader("Access-Control-Allow-Origin", "*");  //이렇게 해서 모든 요청에 대해서 허용할 수도 있습니다.
+        response.setHeader("Access-Control-Allow-Credentials", "true");
+        response.setHeader("Access-Control-Allow-Methods","*");
+        response.setHeader("Access-Control-Max-Age", "3600");
+        response.setHeader("Access-Control-Allow-Headers",
+                "Origin, X-Requested-With, Content-Type, Accept, Authorization");
+
+        if("OPTIONS".equalsIgnoreCase(request.getMethod())) {
+            response.setStatus(HttpServletResponse.SC_OK);
+        }else {
+            chain.doFilter(req, res);
+        }
+    }
+
+    @Override
+    public void destroy() {
+
+    }
+}

src/main/java/com/axon/product/MsaProductApplication.java

+package com.axon.product;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class MsaProductApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(MsaProductApplication.class, args);
+    }
+
+}

src/main/java/com/axon/product/aggregate/ProductAggregate.java

+package com.axon.product.aggregate;
+
+import lombok.NoArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+
+import org.axonframework.commandhandling.CommandHandler;
+import org.axonframework.eventsourcing.EventSourcingHandler;
+import org.axonframework.modelling.command.AggregateIdentifier;
+import org.axonframework.spring.stereotype.Aggregate;
+
+import com.axon.product.command.ChangeQuantityCommand;
+import com.axon.product.command.CreateProductCommand;
+import com.axon.product.event.ProductCreatedEvent;
+import com.axon.product.event.ProductQuantityChangedEvent;
+import com.axon.product.saga.ProductSaga;
+
+import java.math.BigDecimal;
+
+import static org.axonframework.modelling.command.AggregateLifecycle.apply;
+
+@Aggregate
+@NoArgsConstructor
+@Slf4j
+public class ProductAggregate {
+
+    @AggregateIdentifier
+    private String id;
+    private int quantiy;
+
+
+    @CommandHandler
+    public ProductAggregate(CreateProductCommand command) {
+    	log.info("[ProductAggregate(CreateProductCommand) > apply new ProductCreatedEvent]");
+        apply(new ProductCreatedEvent(command.getId(), command.getName(), command.getQuantity(), command.getPrice()));
+    }
+
+    @EventSourcingHandler
+    public void createProduct(ProductCreatedEvent event) {
+        this.id = event.getProductId();
+        this.quantiy = event.getQuantity();
+    }
+
+    @CommandHandler
+    public void changeQuantity(ChangeQuantityCommand command) {
+    	log.info("[@CommandHandler ProductchangeQuantity]");
+        if(this.quantiy < command.getQuantity()) throw new IllegalArgumentException("tfy ");
+        apply(new ProductQuantityChangedEvent(command.getProductId(), this.quantiy - command.getQuantity()));
+    }
+
+    @EventSourcingHandler
+    public void changeQuantity(ProductQuantityChangedEvent event) {
+        this.quantiy = event.getQuantity();
+    }
+
+}

src/main/java/com/axon/product/command/ChangeQuantityCommand.java

+package com.axon.product.command;
+
+import org.axonframework.modelling.command.TargetAggregateIdentifier;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@AllArgsConstructor
+@Getter
+public class ChangeQuantityCommand {
+
+    @TargetAggregateIdentifier
+    private String productId;
+    private int quantity;
+}

src/main/java/com/axon/product/command/CreateProductCommand.java

+package com.axon.product.command;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import org.axonframework.modelling.command.TargetAggregateIdentifier;
+
+import java.math.BigDecimal;
+
+@AllArgsConstructor
+@Getter
+public class CreateProductCommand {
+
+    @TargetAggregateIdentifier
+    private final String id;
+    private final String name;
+    private final BigDecimal price;
+    private final Integer quantity;
+
+}

src/main/java/com/axon/product/controller/ProductController.java

+package com.axon.product.controller;
+
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import com.axon.product.dto.ProductCreateDto;
+import com.axon.product.entity.ProductEntity;
+import com.axon.product.service.ProductService;
+
+import java.math.BigDecimal;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ExecutionException;
+
+@RestController
+@RequestMapping("/api/v1/product")
+@CrossOrigin(origins = "*")
+public class ProductController {
+
+    final ProductService productService;
+
+    public ProductController(ProductService productService) {
+        this.productService = productService;
+    }
+
+    @GetMapping("/")
+    public ResponseEntity<List<ProductEntity>> getProducts() throws ExecutionException, InterruptedException {
+        List<ProductEntity> productEntities = productService.getProducts();
+        return ResponseEntity.ok(productEntities);
+
+    }
+
+    @PostMapping("/")
+    public ResponseEntity<Map<String, String>> productCreate(@RequestBody ProductCreateDto productCreateDto) {
+        String productId = productService.createProduct(productCreateDto.getName(),
+                BigDecimal.valueOf(productCreateDto.getPrice()),
+                productCreateDto.getQuantity());
+        HashMap<String, String> m = new HashMap<>();
+        m.put("productId", productId);
+        m.put("productName", productCreateDto.getName());
+
+        return ResponseEntity.ok(m);
+    }
+}

src/main/java/com/axon/product/dto/ProductCreateDto.java

+package com.axon.product.dto;
+
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter
+@Setter
+public class ProductCreateDto {
+    private String name;
+    private int quantity;
+    private int price;
+}
+

src/main/java/com/axon/product/entity/ProductEntity.java

+package com.axon.product.entity;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import java.math.BigDecimal;
+
+@Entity
+@Getter
+@Setter
+@AllArgsConstructor
+@NoArgsConstructor
+public class ProductEntity {
+    @Id
+    private String id;
+    private String name;
+    private BigDecimal price;
+    private int quentity;
+}

src/main/java/com/axon/product/enums/OrderStatus.java

+package com.axon.product.enums;
+
+public enum OrderStatus {
+    CREATED, CANCELED
+}

src/main/java/com/axon/product/event/ProductCreatedEvent.java

+package com.axon.product.event;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+import java.math.BigDecimal;
+
+@AllArgsConstructor
+@Getter
+public class ProductCreatedEvent {
+    private String productId;
+    private String name;
+    private int quantity;
+    private BigDecimal price;
+}

src/main/java/com/axon/product/event/ProductQuantityChangedEvent.java

+package com.axon.product.event;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@AllArgsConstructor
+@Getter
+public class ProductQuantityChangedEvent {
+    private String productId;
+    private int quantity;
+}

src/main/java/com/axon/product/event/handler/ProductEventHandler.java

+package com.axon.product.event.handler;
+
+import lombok.AllArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.axonframework.eventhandling.EventHandler;
+import org.springframework.stereotype.Component;
+
+import com.axon.product.entity.ProductEntity;
+import com.axon.product.event.ProductCreatedEvent;
+import com.axon.product.event.ProductQuantityChangedEvent;
+import com.axon.product.repository.ProductRepository;
+
+@Component
+@AllArgsConstructor
+@Slf4j
+public class ProductEventHandler {
+
+    private final ProductRepository productRepository;
+
+    @EventHandler
+    protected void saveProduct(ProductCreatedEvent productCreatedEvent) {
+
+    	log.info("ProductCreatedEvent 이벤트 받음?");
+        log.info("ProductEventHandler > [ProductCreatedEvent] productCreatedEvent");
+        ProductEntity productEntity = new ProductEntity();
+        productEntity.setId(productCreatedEvent.getProductId());
+        productEntity.setName(productCreatedEvent.getName());
+        productEntity.setQuentity(productCreatedEvent.getQuantity());
+        productEntity.setPrice(productCreatedEvent.getPrice());
+
+        productRepository.save(productEntity);
+
+    }
+
+    @EventHandler
+    protected void changeQuantity(ProductQuantityChangedEvent productQuantityChangedEvent) {
+    	log.info("ProductQuantityChangedEvent 이벤트 받음?");
+    	log.info("[ProductQuantityChangedEvent]");
+        ProductEntity productEntity = productRepository.findById(productQuantityChangedEvent.getProductId()).get();
+        log.info("[{}] quantity:{}", productEntity.getName(), productEntity.getQuentity());
+        productEntity.setQuentity(productQuantityChangedEvent.getQuantity());
+        productRepository.save(productEntity);
+    }
+
+}

src/main/java/com/axon/product/exception/ErrorMessage.java

+package com.axon.product.exception;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+import java.time.LocalDateTime;
+
+@AllArgsConstructor
+@Getter
+public class ErrorMessage {
+    private LocalDateTime dateTime;
+    private String message;
+}

src/main/java/com/axon/product/exception/ExceptionManager.java

+package com.axon.product.exception;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+
+import javax.servlet.http.HttpServletRequest;
+import java.time.LocalDateTime;
+
+@RestControllerAdvice
+public class ExceptionManager {
+
+    @ExceptionHandler(Exception.class)
+    public ResponseEntity<?> exceptionHandler(Exception ex, HttpServletRequest request) {
+        return ResponseEntity.status(HttpStatus.ACCEPTED).body(
+                new ErrorMessage(LocalDateTime.now(),
+                ex.getMessage()));
+    }
+
+    @ExceptionHandler(IllegalArgumentException.class)
+    public ResponseEntity<?> illegalArgumentExceptionHandler(Exception ex, HttpServletRequest request) {
+        return ResponseEntity.status(HttpStatus.ACCEPTED).body(
+                new ErrorMessage(LocalDateTime.now(),
+                        ex.getMessage()));
+    }
+}

src/main/java/com/axon/product/query/GetProductsQuery.java

+package com.axon.product.query;
+
+public class GetProductsQuery {
+}

src/main/java/com/axon/product/query/handler/ProductQueryHandler.java

+package com.axon.product.query.handler;
+
+import java.util.List;
+
+import org.axonframework.queryhandling.QueryHandler;
+import org.springframework.stereotype.Component;
+
+import com.axon.product.entity.ProductEntity;
+import com.axon.product.query.GetProductsQuery;
+import com.axon.product.repository.ProductRepository;
+
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+
+@Component
+@RequiredArgsConstructor
+@Slf4j
+public class ProductQueryHandler {
+
+    private final ProductRepository productRepository;
+
+    @QueryHandler
+    protected List<ProductEntity> on(GetProductsQuery query) {
+    	log.info("---product query---");
+        return productRepository.findAll();
+    }
+
+}

src/main/java/com/axon/product/repository/ProductRepository.java

+package com.axon.product.repository;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import com.axon.product.entity.ProductEntity;
+
+public interface ProductRepository extends JpaRepository<ProductEntity, String> {
+
+}

src/main/java/com/axon/product/saga/ProductSaga.java

+package com.axon.product.saga;
+
+import org.axonframework.commandhandling.gateway.CommandGateway;
+import org.axonframework.spring.stereotype.Saga;
+import org.springframework.beans.factory.annotation.Autowired;
+
+import lombok.extern.slf4j.Slf4j;
+
+//@Saga
+@Slf4j
+public class ProductSaga {
+
+    @Autowired
+    private transient CommandGateway commandGateway;
+}

src/main/java/com/axon/product/service/ProductService.java

+package com.axon.product.service;
+
+import java.math.BigDecimal;
+import java.util.List;
+import java.util.UUID;
+import java.util.concurrent.ExecutionException;
+
+import org.axonframework.commandhandling.gateway.CommandGateway;
+import org.axonframework.messaging.responsetypes.ResponseTypes;
+import org.axonframework.queryhandling.QueryGateway;
+import org.springframework.stereotype.Service;
+
+import com.axon.product.command.CreateProductCommand;
+import com.axon.product.entity.ProductEntity;
+import com.axon.product.query.GetProductsQuery;
+
+import lombok.extern.slf4j.Slf4j;
+
+@Slf4j
+@Service
+public class ProductService {
+
+    private final CommandGateway commandGateway;
+    private final QueryGateway queryGateway;
+
+    public ProductService(CommandGateway commandGateway, QueryGateway queryGateway) {
+        this.commandGateway = commandGateway;
+        this.queryGateway = queryGateway;
+    }
+
+    public String createProduct(String name, BigDecimal price, Integer quantity) {
+    	log.info("[@Service createProduct] new CreateProductCommand");
+        // command생성
+        CreateProductCommand createProductCommand = new CreateProductCommand(
+                UUID.randomUUID().toString(), name, price, quantity
+        );
+        // 여기
+        // 생성한 command전송(비동기)
+        String returnValue = commandGateway.sendAndWait(createProductCommand);
+        System.out.printf("returnValue: %s \n", returnValue);
+        return returnValue;
+    }
+
+    public List<ProductEntity> getProducts() throws ExecutionException, InterruptedException {
+        return queryGateway.query(new GetProductsQuery(),
+                ResponseTypes.multipleInstancesOf(ProductEntity.class)).get();
+    }
+
+}

src/main/resources/application.yml

+axon:
+  serializer:
+    general: xstream
+  axonserver:
+    servers: localhost:8124
+
+spring:
+  datasource:
+    driver-class-name: org.postgresql.Driver 
+    url: jdbc:postgresql://localhost:5432/msatest 
+#    driver-class-name: com.mysql.cj.jdbc.Driver 
+#    url: jdbc:mysql://localhost:3306/msatest 
+    username: postgres
+    password: admin
+
+  jpa:
+#    show-sql: true
+    hibernate:
+      ddl-auto: update
+#      dialect: org.hibernate.dialect.H2Dialect
+    properties:
+      format_sql: true
\ No newline at end of file

src/test/java/com/axon/order/AxonShoppingmallOrderApplicationTests.java

+package com.axon.order;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class AxonShoppingmallOrderApplicationTests {
+
+    @Test
+    void contextLoads() {
+    }
+
+}