spring core proxy : init

2021-11-13 16:34:21 +09:00
parent ce27975021
commit 7956f866c6
32 changed files with 979 additions and 0 deletions
--- a/spring-core/proxy/.gitignore
+++ b/spring-core/proxy/.gitignore
@@ -0,0 +1,37 @@
+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/
--- a/spring-core/proxy/build.gradle
+++ b/spring-core/proxy/build.gradle
@@ -0,0 +1,33 @@
+plugins {
+    id 'org.springframework.boot' version '2.5.6'
+    id 'io.spring.dependency-management' version '1.0.11.RELEASE'
+    id 'java'
+}
+
+group = 'com.example'
+version = '0.0.1-SNAPSHOT'
+sourceCompatibility = '1.8'
+
+configurations {
+    compileOnly {
+        extendsFrom annotationProcessor
+    }
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    implementation 'org.springframework.boot:spring-boot-starter-web'
+    compileOnly 'org.projectlombok:lombok'
+    annotationProcessor 'org.projectlombok:lombok'
+    testImplementation 'org.springframework.boot:spring-boot-starter-test'
+
+    testCompileOnly 'org.projectlombok:lombok'
+    testAnnotationProcessor 'org.projectlombok:lombok'
+}
+
+test {
+    useJUnitPlatform()
+}
--- a/spring-core/proxy/gradle/wrapper/gradle-wrapper.jar
+++ b/spring-core/proxy/gradle/wrapper/gradle-wrapper.jar
--- a/spring-core/proxy/gradle/wrapper/gradle-wrapper.properties
+++ b/spring-core/proxy/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.2-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
--- a/spring-core/proxy/gradlew
+++ b/spring-core/proxy/gradlew
@@ -0,0 +1,234 @@
+#!/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 "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# 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 "$JAVACMD" "$@"
--- a/spring-core/proxy/gradlew.bat
+++ b/spring-core/proxy/gradlew.bat
@@ -0,0 +1,89 @@
+@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%" == "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%"=="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!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
--- a/spring-core/proxy/settings.gradle
+++ b/spring-core/proxy/settings.gradle
@@ -0,0 +1 @@
+rootProject.name = 'proxy'
--- a/spring-core/proxy/src/main/java/com/example/proxy/ProxyApplication.java
+++ b/spring-core/proxy/src/main/java/com/example/proxy/ProxyApplication.java
@@ -0,0 +1,17 @@
+package com.example.proxy;
+
+import com.example.proxy.config.AppV1Config;
+import com.example.proxy.config.AppV2Config;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Import;
+
+@Import({AppV1Config.class, AppV2Config.class})
+@SpringBootApplication(scanBasePackages = "com.example.proxy.app")
+public class ProxyApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(ProxyApplication.class, args);
+    }
+
+}
--- a/spring-core/proxy/src/main/java/com/example/proxy/app/v1/OrderControllerV1.java
+++ b/spring-core/proxy/src/main/java/com/example/proxy/app/v1/OrderControllerV1.java
@@ -0,0 +1,17 @@
+package com.example.proxy.app.v1;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+@RequestMapping // 스프링은 @Controller 또는 @RequestMapping 이 있어야 스프링 컨트롤러로 인식
+@ResponseBody
+public interface OrderControllerV1 {
+
+    @GetMapping("/v1/request")
+    String request(@RequestParam("itemId") String itemId);
+
+    @GetMapping("/v1/no-log")
+    String noLog();
+}
--- a/spring-core/proxy/src/main/java/com/example/proxy/app/v1/OrderControllerV1Impl.java
+++ b/spring-core/proxy/src/main/java/com/example/proxy/app/v1/OrderControllerV1Impl.java
@@ -0,0 +1,21 @@
+package com.example.proxy.app.v1;
+
+public class OrderControllerV1Impl implements OrderControllerV1 {
+
+    private final OrderServiceV1 orderService;
+
+    public OrderControllerV1Impl(OrderServiceV1 orderService) {
+        this.orderService = orderService;
+    }
+
+    @Override
+    public String request(String itemId) {
+        orderService.orderItem(itemId);
+        return "ok";
+    }
+
+    @Override
+    public String noLog() {
+        return "ok";
+    }
+}
--- a/spring-core/proxy/src/main/java/com/example/proxy/app/v1/OrderRepositoryV1.java
+++ b/spring-core/proxy/src/main/java/com/example/proxy/app/v1/OrderRepositoryV1.java
@@ -0,0 +1,6 @@
+package com.example.proxy.app.v1;
+
+public interface OrderRepositoryV1 {
+
+    void save(String itemId);
+}
--- a/spring-core/proxy/src/main/java/com/example/proxy/app/v1/OrderRepositoryV1Impl.java
+++ b/spring-core/proxy/src/main/java/com/example/proxy/app/v1/OrderRepositoryV1Impl.java
@@ -0,0 +1,19 @@
+package com.example.proxy.app.v1;
+
+public class OrderRepositoryV1Impl implements OrderRepositoryV1 {
+    @Override
+    public void save(String itemId) {
+        if (itemId.equals("ex")) {
+            throw new IllegalStateException("예외 발생!");
+        }
+        sleep(1000);
+    }
+
+    private void sleep(int millis) {
+        try {
+            Thread.sleep(millis);
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+    }
+}
--- a/spring-core/proxy/src/main/java/com/example/proxy/app/v1/OrderServiceV1.java
+++ b/spring-core/proxy/src/main/java/com/example/proxy/app/v1/OrderServiceV1.java
@@ -0,0 +1,5 @@
+package com.example.proxy.app.v1;
+
+public interface OrderServiceV1 {
+    void orderItem(String itemId);
+}
--- a/spring-core/proxy/src/main/java/com/example/proxy/app/v1/OrderServiceV1Impl.java
+++ b/spring-core/proxy/src/main/java/com/example/proxy/app/v1/OrderServiceV1Impl.java
@@ -0,0 +1,15 @@
+package com.example.proxy.app.v1;
+
+public class OrderServiceV1Impl implements OrderServiceV1 {
+
+    private final OrderRepositoryV1 orderRepository;
+
+    public OrderServiceV1Impl(OrderRepositoryV1 orderRepository) {
+        this.orderRepository = orderRepository;
+    }
+
+    @Override
+    public void orderItem(String itemId) {
+        orderRepository.save(itemId);
+    }
+}
--- a/spring-core/proxy/src/main/java/com/example/proxy/app/v2/OrderControllerV2.java
+++ b/spring-core/proxy/src/main/java/com/example/proxy/app/v2/OrderControllerV2.java
@@ -0,0 +1,29 @@
+package com.example.proxy.app.v2;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+@Slf4j
+@RequestMapping
+@ResponseBody
+public class OrderControllerV2 {
+
+    private final OrderServiceV2 orderService;
+
+    public OrderControllerV2(OrderServiceV2 orderService) {
+        this.orderService = orderService;
+    }
+
+    @GetMapping("/v2/request")
+    public String request(String itemId) {
+        orderService.orderItem(itemId);
+        return "ok";
+    }
+
+    @GetMapping("/v2/no-log")
+    public String noLog() {
+        return "ok";
+    }
+}
--- a/spring-core/proxy/src/main/java/com/example/proxy/app/v2/OrderRepositoryV2.java
+++ b/spring-core/proxy/src/main/java/com/example/proxy/app/v2/OrderRepositoryV2.java
@@ -0,0 +1,18 @@
+package com.example.proxy.app.v2;
+
+public class OrderRepositoryV2 {
+    public void save(String itemId) {
+        if (itemId.equals("ex")) {
+            throw new IllegalStateException("예외 발생!");
+        }
+        sleep(1000);
+    }
+
+    private void sleep(int millis) {
+        try {
+            Thread.sleep(millis);
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+    }
+}
--- a/spring-core/proxy/src/main/java/com/example/proxy/app/v2/OrderServiceV2.java
+++ b/spring-core/proxy/src/main/java/com/example/proxy/app/v2/OrderServiceV2.java
@@ -0,0 +1,14 @@
+package com.example.proxy.app.v2;
+
+public class OrderServiceV2 {
+
+    private final OrderRepositoryV2 orderRepository;
+
+    public OrderServiceV2(OrderRepositoryV2 orderRepository) {
+        this.orderRepository = orderRepository;
+    }
+
+    public void orderItem(String itemId) {
+        orderRepository.save(itemId);
+    }
+}
--- a/spring-core/proxy/src/main/java/com/example/proxy/app/v3/OrderControllerV3.java
+++ b/spring-core/proxy/src/main/java/com/example/proxy/app/v3/OrderControllerV3.java
@@ -0,0 +1,27 @@
+package com.example.proxy.app.v3;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@Slf4j
+@RestController
+public class OrderControllerV3 {
+
+    private final OrderServiceV3 orderService;
+
+    public OrderControllerV3(OrderServiceV3 orderService) {
+        this.orderService = orderService;
+    }
+
+    @GetMapping("/v3/request")
+    public String request(String itemId) {
+        orderService.orderItem(itemId);
+        return "ok";
+    }
+
+    @GetMapping("/v3/no-log")
+    public String noLog() {
+        return "ok";
+    }
+}
--- a/spring-core/proxy/src/main/java/com/example/proxy/app/v3/OrderRepositoryV3.java
+++ b/spring-core/proxy/src/main/java/com/example/proxy/app/v3/OrderRepositoryV3.java
@@ -0,0 +1,21 @@
+package com.example.proxy.app.v3;
+
+import org.springframework.stereotype.Repository;
+
+@Repository
+public class OrderRepositoryV3 {
+    public void save(String itemId) {
+        if (itemId.equals("ex")) {
+            throw new IllegalStateException("예외 발생!");
+        }
+        sleep(1000);
+    }
+
+    private void sleep(int millis) {
+        try {
+            Thread.sleep(millis);
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+    }
+}
--- a/spring-core/proxy/src/main/java/com/example/proxy/app/v3/OrderServiceV3.java
+++ b/spring-core/proxy/src/main/java/com/example/proxy/app/v3/OrderServiceV3.java
@@ -0,0 +1,17 @@
+package com.example.proxy.app.v3;
+
+import org.springframework.stereotype.Service;
+
+@Service
+public class OrderServiceV3 {
+
+    private final OrderRepositoryV3 orderRepository;
+
+    public OrderServiceV3(OrderRepositoryV3 orderRepository) {
+        this.orderRepository = orderRepository;
+    }
+
+    public void orderItem(String itemId) {
+        orderRepository.save(itemId);
+    }
+}
--- a/spring-core/proxy/src/main/java/com/example/proxy/config/AppV1Config.java
+++ b/spring-core/proxy/src/main/java/com/example/proxy/config/AppV1Config.java
@@ -0,0 +1,24 @@
+package com.example.proxy.config;
+
+import com.example.proxy.app.v1.*;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class AppV1Config {
+
+    @Bean
+    public OrderControllerV1 orderControllerV1() {
+        return new OrderControllerV1Impl(orderServiceV1());
+    }
+
+    @Bean
+    public OrderServiceV1 orderServiceV1() {
+        return new OrderServiceV1Impl(orderRepositoryV1());
+    }
+
+    @Bean
+    public OrderRepositoryV1 orderRepositoryV1() {
+        return new OrderRepositoryV1Impl();
+    }
+}
--- a/spring-core/proxy/src/main/java/com/example/proxy/config/AppV2Config.java
+++ b/spring-core/proxy/src/main/java/com/example/proxy/config/AppV2Config.java
@@ -0,0 +1,26 @@
+package com.example.proxy.config;
+
+import com.example.proxy.app.v2.OrderControllerV2;
+import com.example.proxy.app.v2.OrderRepositoryV2;
+import com.example.proxy.app.v2.OrderServiceV2;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class AppV2Config {
+
+    @Bean
+    public OrderControllerV2 orderControllerV2() {
+        return new OrderControllerV2(orderServiceV2());
+    }
+
+    @Bean
+    public OrderServiceV2 orderServiceV2() {
+        return new OrderServiceV2(orderRepositoryV2());
+    }
+
+    @Bean
+    public OrderRepositoryV2 orderRepositoryV2() {
+        return new OrderRepositoryV2();
+    }
+}
--- a/spring-core/proxy/src/main/java/com/example/proxy/trace/TraceId.java
+++ b/spring-core/proxy/src/main/java/com/example/proxy/trace/TraceId.java
@@ -0,0 +1,43 @@
+package hello.proxy.trace;
+
+import java.util.UUID;
+
+public class TraceId {
+
+    private String id;
+    private int level;
+
+    public TraceId() {
+        this.id = createId();
+        this.level = 0;
+    }
+
+    private TraceId(String id, int level) {
+        this.id = id;
+        this.level = level;
+    }
+
+    private String createId() {
+        return UUID.randomUUID().toString().substring(0, 8);
+    }
+
+    public TraceId createNextId() {
+        return new TraceId(id, level + 1);
+    }
+
+    public TraceId createPreviousId() {
+        return new TraceId(id, level - 1);
+    }
+
+    public boolean isFirstLevel() {
+        return level == 0;
+    }
+
+    public String getId() {
+        return id;
+    }
+
+    public int getLevel() {
+        return level;
+    }
+}
--- a/spring-core/proxy/src/main/java/com/example/proxy/trace/TraceStatus.java
+++ b/spring-core/proxy/src/main/java/com/example/proxy/trace/TraceStatus.java
@@ -0,0 +1,26 @@
+package hello.proxy.trace;
+
+public class TraceStatus {
+
+    private TraceId traceId;
+    private Long startTimeMs;
+    private String message;
+
+    public TraceStatus(TraceId traceId, Long startTimeMs, String message) {
+        this.traceId = traceId;
+        this.startTimeMs = startTimeMs;
+        this.message = message;
+    }
+
+    public Long getStartTimeMs() {
+        return startTimeMs;
+    }
+
+    public String getMessage() {
+        return message;
+    }
+
+    public TraceId getTraceId() {
+        return traceId;
+    }
+}
--- a/spring-core/proxy/src/main/java/com/example/proxy/trace/callback/TraceCallback.java
+++ b/spring-core/proxy/src/main/java/com/example/proxy/trace/callback/TraceCallback.java
@@ -0,0 +1,5 @@
+package hello.proxy.trace.callback;
+
+public interface TraceCallback<T> {
+    T call();
+}
--- a/spring-core/proxy/src/main/java/com/example/proxy/trace/callback/TraceTemplate.java
+++ b/spring-core/proxy/src/main/java/com/example/proxy/trace/callback/TraceTemplate.java
@@ -0,0 +1,29 @@
+package hello.proxy.trace.callback;
+
+import hello.proxy.trace.TraceStatus;
+import hello.proxy.trace.logtrace.LogTrace;
+
+public class TraceTemplate {
+
+    private final LogTrace trace;
+
+    public TraceTemplate(LogTrace trace) {
+        this.trace = trace;
+    }
+
+    public <T> T execute(String message, TraceCallback<T> callback) {
+        TraceStatus status = null;
+        try {
+            status = trace.begin(message);
+
+            //로직 호출
+            T result = callback.call();
+
+            trace.end(status);
+            return result;
+        } catch (Exception e) {
+            trace.exception(status, e);
+            throw e;
+        }
+    }
+}
--- a/spring-core/proxy/src/main/java/com/example/proxy/trace/logtrace/FieldLogTrace.java
+++ b/spring-core/proxy/src/main/java/com/example/proxy/trace/logtrace/FieldLogTrace.java
@@ -0,0 +1,72 @@
+package hello.proxy.trace.logtrace;
+
+import hello.proxy.trace.TraceId;
+import hello.proxy.trace.TraceStatus;
+import lombok.extern.slf4j.Slf4j;
+
+@Slf4j
+public class FieldLogTrace implements LogTrace {
+
+    private static final String START_PREFIX = "-->";
+    private static final String COMPLETE_PREFIX = "<--";
+    private static final String EX_PREFIX = "<X-";
+
+    private TraceId traceIdHolder; //동시성 이슈 발생
+
+    @Override
+    public TraceStatus begin(String message) {
+        syncTraceId();
+        TraceId traceId = traceIdHolder;
+        Long startTimeMs = System.currentTimeMillis();
+        log.info("[{}] {}{}", traceId.getId(), addSpace(START_PREFIX, traceId.getLevel()), message);
+
+        return new TraceStatus(traceId, startTimeMs, message);
+    }
+
+    @Override
+    public void end(TraceStatus status) {
+        complete(status, null);
+    }
+
+    @Override
+    public void exception(TraceStatus status, Exception e) {
+        complete(status, e);
+    }
+
+    private void complete(TraceStatus status, Exception e) {
+        Long stopTimeMs = System.currentTimeMillis();
+        long resultTimeMs = stopTimeMs - status.getStartTimeMs();
+        TraceId traceId = status.getTraceId();
+        if (e == null) {
+            log.info("[{}] {}{} time={}ms", traceId.getId(), addSpace(COMPLETE_PREFIX, traceId.getLevel()), status.getMessage(), resultTimeMs);
+        } else {
+            log.info("[{}] {}{} time={}ms ex={}", traceId.getId(), addSpace(EX_PREFIX, traceId.getLevel()), status.getMessage(), resultTimeMs, e.toString());
+        }
+
+        releaseTraceId();
+    }
+
+    private void syncTraceId() {
+        if (traceIdHolder == null) {
+            traceIdHolder = new TraceId();
+        } else {
+            traceIdHolder = traceIdHolder.createNextId();
+        }
+    }
+
+    private void releaseTraceId() {
+        if (traceIdHolder.isFirstLevel()) {
+            traceIdHolder = null; //destroy
+        } else {
+            traceIdHolder = traceIdHolder.createPreviousId();
+        }
+    }
+
+    private static String addSpace(String prefix, int level) {
+        StringBuilder sb = new StringBuilder();
+        for (int i = 0; i < level; i++) {
+            sb.append( (i == level - 1) ? "|" + prefix : "|   ");
+        }
+        return sb.toString();
+    }
+}
--- a/spring-core/proxy/src/main/java/com/example/proxy/trace/logtrace/LogTrace.java
+++ b/spring-core/proxy/src/main/java/com/example/proxy/trace/logtrace/LogTrace.java
@@ -0,0 +1,10 @@
+package hello.proxy.trace.logtrace;
+
+import hello.proxy.trace.TraceStatus;
+
+public interface LogTrace {
+
+    TraceStatus begin(String message);
+    void end(TraceStatus status);
+    void exception(TraceStatus status, Exception e);
+}
--- a/spring-core/proxy/src/main/java/com/example/proxy/trace/logtrace/ThreadLocalLogTrace.java
+++ b/spring-core/proxy/src/main/java/com/example/proxy/trace/logtrace/ThreadLocalLogTrace.java
@@ -0,0 +1,74 @@
+package hello.proxy.trace.logtrace;
+
+import hello.proxy.trace.TraceId;
+import hello.proxy.trace.TraceStatus;
+import lombok.extern.slf4j.Slf4j;
+
+@Slf4j
+public class ThreadLocalLogTrace implements LogTrace {
+
+    private static final String START_PREFIX = "-->";
+    private static final String COMPLETE_PREFIX = "<--";
+    private static final String EX_PREFIX = "<X-";
+
+    private ThreadLocal<TraceId> traceIdHolder = new ThreadLocal<>();
+
+    @Override
+    public TraceStatus begin(String message) {
+        syncTraceId();
+        TraceId traceId = traceIdHolder.get();
+        Long startTimeMs = System.currentTimeMillis();
+        log.info("[{}] {}{}", traceId.getId(), addSpace(START_PREFIX, traceId.getLevel()), message);
+
+        return new TraceStatus(traceId, startTimeMs, message);
+    }
+
+    @Override
+    public void end(TraceStatus status) {
+        complete(status, null);
+    }
+
+    @Override
+    public void exception(TraceStatus status, Exception e) {
+        complete(status, e);
+    }
+
+    private void complete(TraceStatus status, Exception e) {
+        Long stopTimeMs = System.currentTimeMillis();
+        long resultTimeMs = stopTimeMs - status.getStartTimeMs();
+        TraceId traceId = status.getTraceId();
+        if (e == null) {
+            log.info("[{}] {}{} time={}ms", traceId.getId(), addSpace(COMPLETE_PREFIX, traceId.getLevel()), status.getMessage(), resultTimeMs);
+        } else {
+            log.info("[{}] {}{} time={}ms ex={}", traceId.getId(), addSpace(EX_PREFIX, traceId.getLevel()), status.getMessage(), resultTimeMs, e.toString());
+        }
+
+        releaseTraceId();
+    }
+
+    private void syncTraceId() {
+        TraceId traceId = traceIdHolder.get();
+        if (traceId == null) {
+            traceIdHolder.set(new TraceId());
+        } else {
+            traceIdHolder.set(traceId.createNextId());
+        }
+    }
+
+    private void releaseTraceId() {
+        TraceId traceId = traceIdHolder.get();
+        if (traceId.isFirstLevel()) {
+            traceIdHolder.remove();//destroy
+        } else {
+            traceIdHolder.set(traceId.createPreviousId());
+        }
+    }
+
+    private static String addSpace(String prefix, int level) {
+        StringBuilder sb = new StringBuilder();
+        for (int i = 0; i < level; i++) {
+            sb.append( (i == level - 1) ? "|" + prefix : "|   ");
+        }
+        return sb.toString();
+    }
+}
--- a/spring-core/proxy/src/main/java/com/example/proxy/trace/template/AbstractTemplate.java
+++ b/spring-core/proxy/src/main/java/com/example/proxy/trace/template/AbstractTemplate.java
@@ -0,0 +1,31 @@
+package hello.proxy.trace.template;
+
+import hello.proxy.trace.TraceStatus;
+import hello.proxy.trace.logtrace.LogTrace;
+
+public abstract class AbstractTemplate<T> {
+
+    private final LogTrace trace;
+
+    public AbstractTemplate(LogTrace trace) {
+        this.trace = trace;
+    }
+
+    public T execute(String message) {
+        TraceStatus status = null;
+        try {
+            status = trace.begin(message);
+
+            //로직 호출
+            T result = call();
+
+            trace.end(status);
+            return result;
+        } catch (Exception e) {
+            trace.exception(status, e);
+            throw e;
+        }
+    }
+
+    protected abstract T call();
+}
--- a/spring-core/proxy/src/main/resources/application.properties
+++ b/spring-core/proxy/src/main/resources/application.properties
@@ -0,0 +1 @@
+
--- a/spring-core/proxy/src/test/java/com/example/proxy/ProxyApplicationTests.java
+++ b/spring-core/proxy/src/test/java/com/example/proxy/ProxyApplicationTests.java
@@ -0,0 +1,13 @@
+package com.example.proxy;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class ProxyApplicationTests {
+
+    @Test
+    void contextLoads() {
+    }
+
+}