commit 93aba73e976131f199c4ba40d1b736f9f0f717e1 Author: Maximilian Walz Date: Tue Apr 15 16:05:59 2025 +0200 Initial State Machine commit diff --git a/.gitattributes b/.gitattributes new file mode 100644 index 0000000..8af972c --- /dev/null +++ b/.gitattributes @@ -0,0 +1,3 @@ +/gradlew text eol=lf +*.bat text eol=crlf +*.jar binary diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..c2065bc --- /dev/null +++ b/.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/ diff --git a/build.gradle b/build.gradle new file mode 100644 index 0000000..1df2367 --- /dev/null +++ b/build.gradle @@ -0,0 +1,38 @@ +plugins { + id 'java' + id 'org.springframework.boot' version '3.4.4' + id 'io.spring.dependency-management' version '1.1.7' +} + +group = 'de.w665.pr' +version = '0.0.1-SNAPSHOT' + +java { + toolchain { + languageVersion = JavaLanguageVersion.of(21) + } +} + +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' + testRuntimeOnly 'org.junit.platform:junit-platform-launcher' + // https://mvnrepository.com/artifact/org.springframework.statemachine/spring-statemachine-core + implementation 'org.springframework.statemachine:spring-statemachine-core:4.0.0' +} + +tasks.named('test') { + useJUnitPlatform() +} diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar new file mode 100644 index 0000000..9bbc975 Binary files /dev/null and b/gradle/wrapper/gradle-wrapper.jar differ diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 0000000..37f853b --- /dev/null +++ b/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,7 @@ +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +distributionUrl=https\://services.gradle.org/distributions/gradle-8.13-bin.zip +networkTimeout=10000 +validateDistributionUrl=true +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists diff --git a/gradlew b/gradlew new file mode 100644 index 0000000..faf9300 --- /dev/null +++ b/gradlew @@ -0,0 +1,251 @@ +#!/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. +# +# SPDX-License-Identifier: Apache-2.0 +# + +############################################################################## +# +# 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 -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || 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, 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 "$JAVACMD" "$@" diff --git a/gradlew.bat b/gradlew.bat new file mode 100644 index 0000000..9d21a21 --- /dev/null +++ b/gradlew.bat @@ -0,0 +1,94 @@ +@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 +@rem SPDX-License-Identifier: Apache-2.0 +@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 diff --git a/penetrator.ps1 b/penetrator.ps1 new file mode 100644 index 0000000..a255d7b --- /dev/null +++ b/penetrator.ps1 @@ -0,0 +1,132 @@ +# PowerShell script to send 100 GET requests to http://localhost/traffic/next using parallel execution +# This script uses runspaces for maximum performance + +# Target URL +$url = "http://localhost/traffic/next" + +# Number of requests to send +$requestCount = 1000 + +# Maximum number of concurrent threads +$maxThreads = 32 # Adjust based on your system's capabilities + +Write-Host "Sending $requestCount GET requests to $url using parallel execution..." + +# Create runspace pool +$runspacePool = [runspacefactory]::CreateRunspacePool(1, $maxThreads) +$runspacePool.Open() + +# Create a script block for making the request +$scriptBlock = { + param($url, $id) + + # Use Stopwatch for more precise timing + $stopwatch = [System.Diagnostics.Stopwatch]::StartNew() + try { + $response = Invoke-WebRequest -Uri $url -Method Get -UseBasicParsing -ErrorAction Stop + $stopwatch.Stop() + $timeMs = $stopwatch.Elapsed.TotalMilliseconds + + # Return result object + [PSCustomObject]@{ + RequestId = $id + StatusCode = $response.StatusCode + ResponseTimeMs = $timeMs + Success = $true + Error = $null + } + } + catch { + $stopwatch.Stop() + $timeMs = $stopwatch.Elapsed.TotalMilliseconds + + # Return error object + [PSCustomObject]@{ + RequestId = $id + StatusCode = 0 + ResponseTimeMs = $timeMs + Success = $false + Error = $_.Exception.Message + } + } +} + +# Measure total execution time +$totalStopwatch = [System.Diagnostics.Stopwatch]::StartNew() + +# Create array for runspace jobs +$runspaces = @() + +# Start all requests in parallel +for ($i = 1; $i -le $requestCount; $i++) { + $runspace = [powershell]::Create().AddScript($scriptBlock).AddArgument($url).AddArgument($i) + $runspace.RunspacePool = $runspacePool + + $runspaces += [PSCustomObject]@{ + Runspace = $runspace + Status = $runspace.BeginInvoke() + Id = $i + } +} + +# Collect results +$results = @() +do { + # Check for completed runspaces + foreach ($runspace in ($runspaces | Where-Object { $_.Status.IsCompleted -eq $true })) { + $result = $runspace.Runspace.EndInvoke($runspace.Status) + $results += $result + + # Remove from pending runspaces + $runspaces = $runspaces | Where-Object { $_.Id -ne $runspace.Id } + + # Display result (optional) + if ($result.Success) { + Write-Host "Request $($result.RequestId) complete: $($result.ResponseTimeMs.ToString("0.00")) ms" -ForegroundColor Green + } + else { + Write-Host "Request $($result.RequestId) failed: $($result.Error)" -ForegroundColor Red + } + } + + # Small sleep to prevent CPU thrashing + Start-Sleep -Milliseconds 10 + +} while ($runspaces.Count -gt 0) + +# Stop timing +$totalStopwatch.Stop() +$totalTimeSeconds = $totalStopwatch.Elapsed.TotalSeconds + +# Calculate statistics +$successResults = $results | Where-Object { $_.Success -eq $true } +$failureCount = ($results | Where-Object { $_.Success -eq $false }).Count +$successCount = $successResults.Count + +if ($successCount -gt 0) { + $avgResponseTime = ($successResults | Measure-Object -Property ResponseTimeMs -Average).Average + $minResponseTime = ($successResults | Measure-Object -Property ResponseTimeMs -Minimum).Minimum + $maxResponseTime = ($successResults | Measure-Object -Property ResponseTimeMs -Maximum).Maximum + $requestsPerSecond = $requestCount / $totalTimeSeconds +} + +# Display summary +Write-Host "`n--- Performance Summary ---" +Write-Host "Total Requests: $requestCount" +Write-Host "Successful: $successCount" -ForegroundColor Green +if ($failureCount -gt 0) { + Write-Host "Failed: $failureCount" -ForegroundColor Red +} +Write-Host "Total Time: $($totalTimeSeconds.ToString("0.00")) seconds" +Write-Host "Requests/second: $($requestsPerSecond.ToString("0.00"))" + +if ($successCount -gt 0) { + Write-Host "`n--- Response Time (ms) ---" + Write-Host "Average: $($avgResponseTime.ToString("0.00")) ms" + Write-Host "Minimum: $($minResponseTime.ToString("0.00")) ms" + Write-Host "Maximum: $($maxResponseTime.ToString("0.00")) ms" +} + +# Clean up resources +$runspacePool.Close() +$runspacePool.Dispose() \ No newline at end of file diff --git a/settings.gradle b/settings.gradle new file mode 100644 index 0000000..d504cef --- /dev/null +++ b/settings.gradle @@ -0,0 +1 @@ +rootProject.name = 'statemachine' diff --git a/src/main/java/de/w665/pr/statemachine/StatemachineApplication.java b/src/main/java/de/w665/pr/statemachine/StatemachineApplication.java new file mode 100644 index 0000000..7485cf3 --- /dev/null +++ b/src/main/java/de/w665/pr/statemachine/StatemachineApplication.java @@ -0,0 +1,13 @@ +package de.w665.pr.statemachine; + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.SpringBootApplication; + +@SpringBootApplication +public class StatemachineApplication { + + public static void main(String[] args) { + SpringApplication.run(StatemachineApplication.class, args); + } + +} diff --git a/src/main/java/de/w665/pr/statemachine/trafficlight/TrafficLightController.java b/src/main/java/de/w665/pr/statemachine/trafficlight/TrafficLightController.java new file mode 100644 index 0000000..eb693d5 --- /dev/null +++ b/src/main/java/de/w665/pr/statemachine/trafficlight/TrafficLightController.java @@ -0,0 +1,36 @@ +package de.w665.pr.statemachine.trafficlight; + +import jakarta.annotation.PostConstruct; +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.statemachine.StateMachine; +import org.springframework.web.bind.annotation.GetMapping; +import org.springframework.web.bind.annotation.RequestMapping; +import org.springframework.web.bind.annotation.RestController; + +@RestController +@RequestMapping("/traffic") +public class TrafficLightController { + + private int requestCount = 0; + + @Autowired + private StateMachine stateMachine; + + @PostConstruct + public void init() { + stateMachine.startReactively().subscribe(); + } + + @GetMapping("/state") + public String getCurrentState() { + requestCount++; + return stateMachine.getState().getId().toString() + " | Total requests: " + requestCount; + } + + @GetMapping("/next") + public String triggerNextState() { + requestCount++; + stateMachine.sendEvent(TrafficLightEvents.TIMER); + return "Triggered TIMER event. New state: " + stateMachine.getState().getId() + " | Total requests: " + requestCount; + } +} diff --git a/src/main/java/de/w665/pr/statemachine/trafficlight/TrafficLightEvents.java b/src/main/java/de/w665/pr/statemachine/trafficlight/TrafficLightEvents.java new file mode 100644 index 0000000..473aadd --- /dev/null +++ b/src/main/java/de/w665/pr/statemachine/trafficlight/TrafficLightEvents.java @@ -0,0 +1,5 @@ +package de.w665.pr.statemachine.trafficlight; + +public enum TrafficLightEvents { + TIMER +} diff --git a/src/main/java/de/w665/pr/statemachine/trafficlight/TrafficLightStateMachineConfig.java b/src/main/java/de/w665/pr/statemachine/trafficlight/TrafficLightStateMachineConfig.java new file mode 100644 index 0000000..d5fdc61 --- /dev/null +++ b/src/main/java/de/w665/pr/statemachine/trafficlight/TrafficLightStateMachineConfig.java @@ -0,0 +1,79 @@ +package de.w665.pr.statemachine.trafficlight; + +import lombok.extern.slf4j.Slf4j; +import org.springframework.context.annotation.Bean; +import org.springframework.context.annotation.Configuration; +import org.springframework.statemachine.action.Action; +import org.springframework.statemachine.config.EnableStateMachine; +import org.springframework.statemachine.config.StateMachineConfigurerAdapter; +import org.springframework.statemachine.config.builders.StateMachineStateConfigurer; +import org.springframework.statemachine.config.builders.StateMachineTransitionConfigurer; + +import java.util.EnumSet; + +@Slf4j +@Configuration +@EnableStateMachine +public class TrafficLightStateMachineConfig extends StateMachineConfigurerAdapter { + + @Override + public void configure(StateMachineStateConfigurer states) throws Exception{ + states + .withStates() + .initial(TrafficLightStates.RED) + .state(TrafficLightStates.RED, redEntryAction(), redExitAction()) + .state(TrafficLightStates.YELLOW, yellowEntryAction(), yellowExitAction()) + .state(TrafficLightStates.GREEN, greenEntryAction(), greenExitAction()) + .states(EnumSet.allOf(TrafficLightStates.class)); // Do I need this line? Aren't all the states configured in the line above? + } + + @Override + public void configure(StateMachineTransitionConfigurer transitions) throws Exception { + transitions + .withExternal() + .source(TrafficLightStates.RED) + .target(TrafficLightStates.GREEN) + .event(TrafficLightEvents.TIMER) + .and() + .withExternal() + .source(TrafficLightStates.GREEN) + .target(TrafficLightStates.YELLOW) + .event(TrafficLightEvents.TIMER) + .and() + .withExternal() + .source(TrafficLightStates.YELLOW) + .target(TrafficLightStates.RED) + .event(TrafficLightEvents.TIMER); + } + + @Bean + public Action redEntryAction() { + return context -> log.info("Red light ON"); + } + + @Bean + Action redExitAction() { + return context -> log.info("Red light OFF"); + } + + @Bean + Action yellowEntryAction() { + return context -> log.info("Yellow light ON"); + } + + @Bean + Action yellowExitAction() { + return context -> log.info("Yellow light OFF"); + } + + @Bean + Action greenEntryAction() { + return context -> log.info("Green light ON"); + } + + @Bean + Action greenExitAction() { + return context -> log.info("Green light OFF"); + } + +} diff --git a/src/main/java/de/w665/pr/statemachine/trafficlight/TrafficLightStates.java b/src/main/java/de/w665/pr/statemachine/trafficlight/TrafficLightStates.java new file mode 100644 index 0000000..fdc9912 --- /dev/null +++ b/src/main/java/de/w665/pr/statemachine/trafficlight/TrafficLightStates.java @@ -0,0 +1,7 @@ +package de.w665.pr.statemachine.trafficlight; + +public enum TrafficLightStates { + RED, + YELLOW, + GREEN +} diff --git a/src/main/resources/application.properties b/src/main/resources/application.properties new file mode 100644 index 0000000..b8776d4 --- /dev/null +++ b/src/main/resources/application.properties @@ -0,0 +1,2 @@ +spring.application.name=statemachine +server.port=80 \ No newline at end of file diff --git a/src/test/java/de/w665/pr/statemachine/StatemachineApplicationTests.java b/src/test/java/de/w665/pr/statemachine/StatemachineApplicationTests.java new file mode 100644 index 0000000..69c7812 --- /dev/null +++ b/src/test/java/de/w665/pr/statemachine/StatemachineApplicationTests.java @@ -0,0 +1,13 @@ +package de.w665.pr.statemachine; + +import org.junit.jupiter.api.Test; +import org.springframework.boot.test.context.SpringBootTest; + +@SpringBootTest +class StatemachineApplicationTests { + + @Test + void contextLoads() { + } + +}