initial commit

Signed-off-by: Peter Siegmund <developer@mars3142.org>

.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/

.run/Application.run.xml

@@ -0,0 +1,16 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="Application" type="SpringBootApplicationConfigurationType" factoryName="Spring Boot">
+    <option name="ACTIVE_PROFILES" value="dev" />
+    <option name="ALTERNATIVE_JRE_PATH" value="temurin-21" />
+    <option name="ALTERNATIVE_JRE_PATH_ENABLED" value="true" />
+    <envs>
+      <env name="TIMEZONE_SERVICE_URI" value="http://localhost:8085" />
+    </envs>
+    <option name="FRAME_DEACTIVATION_UPDATE_POLICY" value="UpdateClassesAndResources" />
+    <module name="edge-service.main" />
+    <option name="SPRING_BOOT_MAIN_CLASS" value="dev.mars3142.fhq.Application" />
+    <method v="2">
+      <option name="Make" enabled="true" />
+    </method>
+  </configuration>
+</component>

Dockerfile

@@ -0,0 +1,33 @@
+# Stage that builds the application, a prerequisite for the running stage
+FROM eclipse-temurin:21-jdk-jammy as build
+
+ARG SERVICE_ROOT
+
+RUN apt-get update -qq
+
+# Stop running as root at this point
+RUN useradd -m app
+WORKDIR /usr/src/app/
+RUN chown app:app /usr/src/app/
+USER app
+
+# Copy pom.xml and prefetch dependencies so a repeated build can continue from the next step with existing dependencies
+COPY --chown=app ${SERVICE_ROOT}/gradle/ ./gradle
+COPY --chown=app ${SERVICE_ROOT}/gradlew ${SERVICE_ROOT}/build.gradle ${SERVICE_ROOT}/settings.gradle ./
+
+# Copy all needed project files to a folder
+COPY --chown=app:app ${SERVICE_ROOT}/src ./src
+
+# Build the production package
+RUN ./gradlew clean build
+
+# Running stage: the part that is used for running the application
+FROM eclipse-temurin:21-jre-jammy
+
+RUN useradd -m app
+USER app
+
+COPY --chown=app --from=build /usr/src/app/build/libs/*-SNAPSHOT.jar /usr/app/app.jar
+
+EXPOSE 8080
+CMD java -jar /usr/app/app.jar

Makefile

@@ -0,0 +1,2 @@
+build-image:
+	podman build -f Dockerfile -t edge-service:latest --build-arg SERVICE_ROOT=.

build.gradle

@@ -0,0 +1,69 @@
+plugins {
+    id 'java'
+    id 'org.springframework.boot' version '3.3.2'
+    id 'io.spring.dependency-management' version '1.1.6'
+    id 'idea'
+}
+
+group = 'dev.mars3142.fhq'
+version = '0.0.1-SNAPSHOT'
+
+java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(21)
+    }
+}
+
+configurations {
+    compileOnly {
+        extendsFrom annotationProcessor
+    }
+}
+
+repositories {
+    mavenCentral()
+}
+
+ext {
+    set('springCloudVersion', "2023.0.3")
+    set('springModulithVersion', "1.2.1")
+    set('springCloudGCPVersion', "5.4.1")
+}
+
+dependencies {
+    implementation 'org.springframework.boot:spring-boot-starter-actuator'
+    implementation 'org.springframework.modulith:spring-modulith-starter-core'
+    implementation 'org.springframework.cloud:spring-cloud-starter-gateway'
+    implementation 'org.springframework.cloud:spring-cloud-starter-circuitbreaker-reactor-resilience4j'
+    implementation 'com.google.cloud:spring-cloud-gcp-starter'
+    implementation 'com.google.auth:google-auth-library-oauth2-http'
+    implementation 'io.grpc:grpc-netty'
+    testImplementation 'io.projectreactor:reactor-test'
+    compileOnly 'org.projectlombok:lombok'
+    developmentOnly 'org.springframework.boot:spring-boot-devtools'
+    runtimeOnly 'org.springframework.modulith:spring-modulith-actuator'
+    runtimeOnly 'org.springframework.modulith:spring-modulith-observability'
+    annotationProcessor 'org.projectlombok:lombok'
+    testImplementation 'org.springframework.boot:spring-boot-starter-test'
+    testImplementation 'org.springframework.modulith:spring-modulith-starter-test'
+    testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
+}
+
+dependencyManagement {
+    imports {
+        mavenBom "org.springframework.modulith:spring-modulith-bom:${springModulithVersion}"
+        mavenBom "org.springframework.cloud:spring-cloud-dependencies:${springCloudVersion}"
+        mavenBom "com.google.cloud:spring-cloud-gcp-dependencies:${springCloudGCPVersion}"
+    }
+}
+
+tasks.named('test') {
+    useJUnitPlatform()
+}
+
+idea {
+    module {
+        downloadJavadoc = true
+        downloadSources = true
+    }
+}

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.8-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

@@ -0,0 +1,249 @@
+#!/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/HEAD/platforms/jvm/plugins-application/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
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&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: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$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
+
+
+# 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"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+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

@@ -0,0 +1,92 @@
+@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=.
+@rem This is normally unused
+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. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+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

@@ -0,0 +1 @@
+rootProject.name = 'edge-service'

src/main/java/dev/mars3142/fhq/Application.java

@@ -0,0 +1,13 @@
+package dev.mars3142.fhq;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class Application {
+
+  public static void main(String[] args) {
+    SpringApplication.run(Application.class, args);
+  }
+
+}

src/main/java/dev/mars3142/fhq/edge/GCPGatewayFilter.java

@@ -0,0 +1,59 @@
+package dev.mars3142.fhq.edge;
+
+import com.google.auth.oauth2.GoogleCredentials;
+import com.google.auth.oauth2.IdTokenCredentials;
+import com.google.auth.oauth2.IdTokenProvider;
+import java.io.IOException;
+import lombok.Getter;
+import lombok.Setter;
+import lombok.extern.slf4j.Slf4j;
+import lombok.val;
+import org.springframework.cloud.gateway.filter.GatewayFilter;
+import org.springframework.cloud.gateway.filter.factory.AbstractGatewayFilterFactory;
+import org.springframework.stereotype.Component;
+
+@Component
+@Slf4j
+public class GCPGatewayFilter extends AbstractGatewayFilterFactory<GCPGatewayFilter.Config> {
+
+  public GCPGatewayFilter() {
+    super(Config.class);
+  }
+
+  @Override
+  public GatewayFilter apply(Config config) {
+    return (exchange, chain) -> {
+      try {
+        val token = getAuthToken(config);
+        exchange.getRequest()
+            .mutate()
+            .header("X-Serverless-Authorization", "Bearer " + token);
+        return chain.filter(exchange);
+      } catch (Exception e) {
+        log.error("Error getting token", e);
+        throw new RuntimeException(e);
+      }
+    };
+  }
+
+  private String getAuthToken(Config config) throws IOException {
+    val credentials = GoogleCredentials.getApplicationDefault();
+    if (!(credentials instanceof IdTokenProvider)) {
+      throw new IllegalArgumentException("Credentials are not an instance of IdTokenProvider.");
+    }
+    val tokenCredential =
+        IdTokenCredentials.newBuilder()
+            .setIdTokenProvider((IdTokenProvider) credentials)
+            .setTargetAudience(config.getAudience())
+            .build();
+
+    return tokenCredential.refreshAccessToken().getTokenValue();
+  }
+
+  @Setter
+  @Getter
+  public static class Config {
+
+    private String audience;
+  }
+}

src/main/resources/application.yaml

@@ -0,0 +1,49 @@
+info:
+  application:
+    name: ${spring.application.name}
+    version: '@project.version@'
+    spring-cloud-version: '@spring-cloud.version@'
+    spring-boot-version: '@project.parent.version@'
+
+server:
+  port: ${PORT:8080}
+  shutdown: graceful
+  error:
+    include-message: on_param
+    include-stacktrace: on_param
+
+spring:
+  application:
+    name: edge-service
+  cloud:
+    gateway:
+      default-filters:
+        - name: Retry
+          args:
+            retries: 3
+            methods: GET
+            series: SERVER_ERROR
+            exceptions: java.io.IOException, java.util.concurrent.TimeoutException
+            backoff:
+              firstBackoff: 50ms
+              maxBackoff: 5000ms
+      routes:
+        - id: timezone-service
+          uri: ${TIMEZONE_SERVICE_URI:http://timezone-service}
+          predicates:
+            - Path=/v1/timezone
+            - Path=/v1/timezone/**
+          filters:
+            - name: GCPGatewayFilter
+              args:
+                audience: ${TIMEZONE_SERVICE_URI:http://timezone-service}
+
+        - id: backend-service
+          uri: ${BACKEND_SERVICE_URI:http://backend-service}
+          predicates:
+            - Path=/v1/**
+          filters:
+            #- AuthGatewayFilter
+            - name: GCPGatewayFilter
+              args:
+                audience: ${BACKEND_SERVICE_URI:http://backend-service}

src/main/resources/banner.txt

@@ -0,0 +1,8 @@
+,------.   ,--.                      ,---.                         ,--.
+|  .---' ,-|  | ,---.  ,---. ,-----.'   .-' ,---. ,--.--.,--.  ,--.`--' ,---. ,---.
+|  `--, ' .-. || .-. || .-. :'-----'`.  `-.| .-. :|  .--' \  `'  / ,--.| .--'| .-. :
+|  `---.\ `-' |' '-' '\   --.       .-'    \   --.|  |     \    /  |  |\ `--.\   --.
+`------' `---' .`-  /  `----'       `-----' `----'`--'      `--'   `--' `---' `----'
+               `---'
+${application.title} ${application.version}
+Powered by Spring Boot ${spring-boot.version}

src/main/resources/logback.xml

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration scan="true">
+
+  <!-- use Spring default values -->
+  <appender class="ch.qos.logback.core.ConsoleAppender" name="Console">
+    <encoder>
+      <charset>utf8</charset>
+      <pattern>${CONSOLE_LOG_PATTERN}</pattern>
+    </encoder>
+  </appender>
+
+  <include resource="org/springframework/boot/logging/logback/defaults.xml"/>
+
+  <!-- LOG everything at INFO level -->
+  <logger additivity="false" level="debug" name="dev.mars3142">
+    <appender-ref ref="Console"/>
+  </logger>
+
+  <!-- LOG "dev.mars3142.*" at DEBUG level -->
+  <root level="info">
+    <appender-ref ref="Console"/>
+  </root>
+
+</configuration>

src/test/java/dev/mars3142/fhq/ApplicationTests.java

@@ -0,0 +1,13 @@
+package dev.mars3142.fhq;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class ApplicationTests {
+
+  @Test
+  void contextLoads() {
+  }
+
+}