├── .gitignore ├── .mvn └── wrapper │ ├── maven-wrapper.jar │ └── maven-wrapper.properties ├── README.md ├── mvnw ├── mvnw.cmd ├── pom.xml └── src ├── main ├── java │ └── com │ │ └── bslota │ │ └── transactional_event_listener │ │ ├── TransactionalEventListenerApplication.java │ │ ├── event │ │ └── CustomerCreatedEvent.java │ │ ├── listener │ │ ├── CustomerCreatedEventAsyncListener.java │ │ └── CustomerCreatedEventListener.java │ │ ├── model │ │ └── Customer.java │ │ ├── repository │ │ └── CustomerRepository.java │ │ └── service │ │ ├── AsyncCallTokenGenerator.java │ │ ├── CustomerService.java │ │ ├── DefaultTokenGenerator.java │ │ └── TokenGenerator.java └── resources │ └── application.yml └── test └── java └── com └── bslota └── transactional_event_listener └── service ├── CustomerServiceAsyncTest.java └── CustomerServiceTest.java /.gitignore: -------------------------------------------------------------------------------- 1 | target/ 2 | !.mvn/wrapper/maven-wrapper.jar 3 | 4 | ### STS ### 5 | .apt_generated 6 | .classpath 7 | .factorypath 8 | .project 9 | .settings 10 | .springBeans 11 | 12 | ### IntelliJ IDEA ### 13 | .idea 14 | *.iws 15 | *.iml 16 | *.ipr 17 | 18 | ### NetBeans ### 19 | nbproject/private/ 20 | build/ 21 | nbbuild/ 22 | dist/ 23 | nbdist/ 24 | .nb-gradle/ -------------------------------------------------------------------------------- /.mvn/wrapper/maven-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/bslota/transactional-event-listener/4ae1e1f7bca4ea17848cdcdfd3c42b6906dd1b95/.mvn/wrapper/maven-wrapper.jar -------------------------------------------------------------------------------- /.mvn/wrapper/maven-wrapper.properties: -------------------------------------------------------------------------------- 1 | distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.5.0/apache-maven-3.5.0-bin.zip 2 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # About 2 | It is a sample **SpringBoot** application that shows how transactional-bound 3 | events work and what should we keep in mind while using them. 4 | 5 | # Building 6 | In order to build the application, simply run a following command 7 | 8 | mvn clean install 9 | 10 | # Running 11 | ## Maven 12 | If you want to run the app with **maven**, hit: 13 | 14 | mvn spring-boot:run 15 | 16 | ## Java 17 | If you have already built your application and want to run it from 18 | **jar** file, hit: 19 | 20 | java -jar transactional-event-listener-${version}.jar 21 | 22 | Where **${version}** is current maven build version. -------------------------------------------------------------------------------- /mvnw: -------------------------------------------------------------------------------- 1 | #!/bin/sh 2 | # ---------------------------------------------------------------------------- 3 | # Licensed to the Apache Software Foundation (ASF) under one 4 | # or more contributor license agreements. See the NOTICE file 5 | # distributed with this work for additional information 6 | # regarding copyright ownership. The ASF licenses this file 7 | # to you under the Apache License, Version 2.0 (the 8 | # "License"); you may not use this file except in compliance 9 | # with the License. You may obtain a copy of the License at 10 | # 11 | # http://www.apache.org/licenses/LICENSE-2.0 12 | # 13 | # Unless required by applicable law or agreed to in writing, 14 | # software distributed under the License is distributed on an 15 | # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 | # KIND, either express or implied. See the License for the 17 | # specific language governing permissions and limitations 18 | # under the License. 19 | # ---------------------------------------------------------------------------- 20 | 21 | # ---------------------------------------------------------------------------- 22 | # Maven2 Start Up Batch script 23 | # 24 | # Required ENV vars: 25 | # ------------------ 26 | # JAVA_HOME - location of a JDK home dir 27 | # 28 | # Optional ENV vars 29 | # ----------------- 30 | # M2_HOME - location of maven2's installed home dir 31 | # MAVEN_OPTS - parameters passed to the Java VM when running Maven 32 | # e.g. to debug Maven itself, use 33 | # set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000 34 | # MAVEN_SKIP_RC - flag to disable loading of mavenrc files 35 | # ---------------------------------------------------------------------------- 36 | 37 | if [ -z "$MAVEN_SKIP_RC" ] ; then 38 | 39 | if [ -f /etc/mavenrc ] ; then 40 | . /etc/mavenrc 41 | fi 42 | 43 | if [ -f "$HOME/.mavenrc" ] ; then 44 | . "$HOME/.mavenrc" 45 | fi 46 | 47 | fi 48 | 49 | # OS specific support. $var _must_ be set to either true or false. 50 | cygwin=false; 51 | darwin=false; 52 | mingw=false 53 | case "`uname`" in 54 | CYGWIN*) cygwin=true ;; 55 | MINGW*) mingw=true;; 56 | Darwin*) darwin=true 57 | # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home 58 | # See https://developer.apple.com/library/mac/qa/qa1170/_index.html 59 | if [ -z "$JAVA_HOME" ]; then 60 | if [ -x "/usr/libexec/java_home" ]; then 61 | export JAVA_HOME="`/usr/libexec/java_home`" 62 | else 63 | export JAVA_HOME="/Library/Java/Home" 64 | fi 65 | fi 66 | ;; 67 | esac 68 | 69 | if [ -z "$JAVA_HOME" ] ; then 70 | if [ -r /etc/gentoo-release ] ; then 71 | JAVA_HOME=`java-config --jre-home` 72 | fi 73 | fi 74 | 75 | if [ -z "$M2_HOME" ] ; then 76 | ## resolve links - $0 may be a link to maven's home 77 | PRG="$0" 78 | 79 | # need this for relative symlinks 80 | while [ -h "$PRG" ] ; do 81 | ls=`ls -ld "$PRG"` 82 | link=`expr "$ls" : '.*-> \(.*\)$'` 83 | if expr "$link" : '/.*' > /dev/null; then 84 | PRG="$link" 85 | else 86 | PRG="`dirname "$PRG"`/$link" 87 | fi 88 | done 89 | 90 | saveddir=`pwd` 91 | 92 | M2_HOME=`dirname "$PRG"`/.. 93 | 94 | # make it fully qualified 95 | M2_HOME=`cd "$M2_HOME" && pwd` 96 | 97 | cd "$saveddir" 98 | # echo Using m2 at $M2_HOME 99 | fi 100 | 101 | # For Cygwin, ensure paths are in UNIX format before anything is touched 102 | if $cygwin ; then 103 | [ -n "$M2_HOME" ] && 104 | M2_HOME=`cygpath --unix "$M2_HOME"` 105 | [ -n "$JAVA_HOME" ] && 106 | JAVA_HOME=`cygpath --unix "$JAVA_HOME"` 107 | [ -n "$CLASSPATH" ] && 108 | CLASSPATH=`cygpath --path --unix "$CLASSPATH"` 109 | fi 110 | 111 | # For Migwn, ensure paths are in UNIX format before anything is touched 112 | if $mingw ; then 113 | [ -n "$M2_HOME" ] && 114 | M2_HOME="`(cd "$M2_HOME"; pwd)`" 115 | [ -n "$JAVA_HOME" ] && 116 | JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`" 117 | # TODO classpath? 118 | fi 119 | 120 | if [ -z "$JAVA_HOME" ]; then 121 | javaExecutable="`which javac`" 122 | if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then 123 | # readlink(1) is not available as standard on Solaris 10. 124 | readLink=`which readlink` 125 | if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then 126 | if $darwin ; then 127 | javaHome="`dirname \"$javaExecutable\"`" 128 | javaExecutable="`cd \"$javaHome\" && pwd -P`/javac" 129 | else 130 | javaExecutable="`readlink -f \"$javaExecutable\"`" 131 | fi 132 | javaHome="`dirname \"$javaExecutable\"`" 133 | javaHome=`expr "$javaHome" : '\(.*\)/bin'` 134 | JAVA_HOME="$javaHome" 135 | export JAVA_HOME 136 | fi 137 | fi 138 | fi 139 | 140 | if [ -z "$JAVACMD" ] ; then 141 | if [ -n "$JAVA_HOME" ] ; then 142 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 143 | # IBM's JDK on AIX uses strange locations for the executables 144 | JAVACMD="$JAVA_HOME/jre/sh/java" 145 | else 146 | JAVACMD="$JAVA_HOME/bin/java" 147 | fi 148 | else 149 | JAVACMD="`which java`" 150 | fi 151 | fi 152 | 153 | if [ ! -x "$JAVACMD" ] ; then 154 | echo "Error: JAVA_HOME is not defined correctly." >&2 155 | echo " We cannot execute $JAVACMD" >&2 156 | exit 1 157 | fi 158 | 159 | if [ -z "$JAVA_HOME" ] ; then 160 | echo "Warning: JAVA_HOME environment variable is not set." 161 | fi 162 | 163 | CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher 164 | 165 | # traverses directory structure from process work directory to filesystem root 166 | # first directory with .mvn subdirectory is considered project base directory 167 | find_maven_basedir() { 168 | 169 | if [ -z "$1" ] 170 | then 171 | echo "Path not specified to find_maven_basedir" 172 | return 1 173 | fi 174 | 175 | basedir="$1" 176 | wdir="$1" 177 | while [ "$wdir" != '/' ] ; do 178 | if [ -d "$wdir"/.mvn ] ; then 179 | basedir=$wdir 180 | break 181 | fi 182 | # workaround for JBEAP-8937 (on Solaris 10/Sparc) 183 | if [ -d "${wdir}" ]; then 184 | wdir=`cd "$wdir/.."; pwd` 185 | fi 186 | # end of workaround 187 | done 188 | echo "${basedir}" 189 | } 190 | 191 | # concatenates all lines of a file 192 | concat_lines() { 193 | if [ -f "$1" ]; then 194 | echo "$(tr -s '\n' ' ' < "$1")" 195 | fi 196 | } 197 | 198 | BASE_DIR=`find_maven_basedir "$(pwd)"` 199 | if [ -z "$BASE_DIR" ]; then 200 | exit 1; 201 | fi 202 | 203 | export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"} 204 | echo $MAVEN_PROJECTBASEDIR 205 | MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS" 206 | 207 | # For Cygwin, switch paths to Windows format before running java 208 | if $cygwin; then 209 | [ -n "$M2_HOME" ] && 210 | M2_HOME=`cygpath --path --windows "$M2_HOME"` 211 | [ -n "$JAVA_HOME" ] && 212 | JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"` 213 | [ -n "$CLASSPATH" ] && 214 | CLASSPATH=`cygpath --path --windows "$CLASSPATH"` 215 | [ -n "$MAVEN_PROJECTBASEDIR" ] && 216 | MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"` 217 | fi 218 | 219 | WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain 220 | 221 | exec "$JAVACMD" \ 222 | $MAVEN_OPTS \ 223 | -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \ 224 | "-Dmaven.home=${M2_HOME}" "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \ 225 | ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@" 226 | -------------------------------------------------------------------------------- /mvnw.cmd: -------------------------------------------------------------------------------- 1 | @REM ---------------------------------------------------------------------------- 2 | @REM Licensed to the Apache Software Foundation (ASF) under one 3 | @REM or more contributor license agreements. See the NOTICE file 4 | @REM distributed with this work for additional information 5 | @REM regarding copyright ownership. The ASF licenses this file 6 | @REM to you under the Apache License, Version 2.0 (the 7 | @REM "License"); you may not use this file except in compliance 8 | @REM with the License. You may obtain a copy of the License at 9 | @REM 10 | @REM http://www.apache.org/licenses/LICENSE-2.0 11 | @REM 12 | @REM Unless required by applicable law or agreed to in writing, 13 | @REM software distributed under the License is distributed on an 14 | @REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 15 | @REM KIND, either express or implied. See the License for the 16 | @REM specific language governing permissions and limitations 17 | @REM under the License. 18 | @REM ---------------------------------------------------------------------------- 19 | 20 | @REM ---------------------------------------------------------------------------- 21 | @REM Maven2 Start Up Batch script 22 | @REM 23 | @REM Required ENV vars: 24 | @REM JAVA_HOME - location of a JDK home dir 25 | @REM 26 | @REM Optional ENV vars 27 | @REM M2_HOME - location of maven2's installed home dir 28 | @REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands 29 | @REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a key stroke before ending 30 | @REM MAVEN_OPTS - parameters passed to the Java VM when running Maven 31 | @REM e.g. to debug Maven itself, use 32 | @REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000 33 | @REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files 34 | @REM ---------------------------------------------------------------------------- 35 | 36 | @REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on' 37 | @echo off 38 | @REM enable echoing my setting MAVEN_BATCH_ECHO to 'on' 39 | @if "%MAVEN_BATCH_ECHO%" == "on" echo %MAVEN_BATCH_ECHO% 40 | 41 | @REM set %HOME% to equivalent of $HOME 42 | if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%") 43 | 44 | @REM Execute a user defined script before this one 45 | if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre 46 | @REM check for pre script, once with legacy .bat ending and once with .cmd ending 47 | if exist "%HOME%\mavenrc_pre.bat" call "%HOME%\mavenrc_pre.bat" 48 | if exist "%HOME%\mavenrc_pre.cmd" call "%HOME%\mavenrc_pre.cmd" 49 | :skipRcPre 50 | 51 | @setlocal 52 | 53 | set ERROR_CODE=0 54 | 55 | @REM To isolate internal variables from possible post scripts, we use another setlocal 56 | @setlocal 57 | 58 | @REM ==== START VALIDATION ==== 59 | if not "%JAVA_HOME%" == "" goto OkJHome 60 | 61 | echo. 62 | echo Error: JAVA_HOME not found in your environment. >&2 63 | echo Please set the JAVA_HOME variable in your environment to match the >&2 64 | echo location of your Java installation. >&2 65 | echo. 66 | goto error 67 | 68 | :OkJHome 69 | if exist "%JAVA_HOME%\bin\java.exe" goto init 70 | 71 | echo. 72 | echo Error: JAVA_HOME is set to an invalid directory. >&2 73 | echo JAVA_HOME = "%JAVA_HOME%" >&2 74 | echo Please set the JAVA_HOME variable in your environment to match the >&2 75 | echo location of your Java installation. >&2 76 | echo. 77 | goto error 78 | 79 | @REM ==== END VALIDATION ==== 80 | 81 | :init 82 | 83 | @REM Find the project base dir, i.e. the directory that contains the folder ".mvn". 84 | @REM Fallback to current working directory if not found. 85 | 86 | set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR% 87 | IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir 88 | 89 | set EXEC_DIR=%CD% 90 | set WDIR=%EXEC_DIR% 91 | :findBaseDir 92 | IF EXIST "%WDIR%"\.mvn goto baseDirFound 93 | cd .. 94 | IF "%WDIR%"=="%CD%" goto baseDirNotFound 95 | set WDIR=%CD% 96 | goto findBaseDir 97 | 98 | :baseDirFound 99 | set MAVEN_PROJECTBASEDIR=%WDIR% 100 | cd "%EXEC_DIR%" 101 | goto endDetectBaseDir 102 | 103 | :baseDirNotFound 104 | set MAVEN_PROJECTBASEDIR=%EXEC_DIR% 105 | cd "%EXEC_DIR%" 106 | 107 | :endDetectBaseDir 108 | 109 | IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig 110 | 111 | @setlocal EnableExtensions EnableDelayedExpansion 112 | for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a 113 | @endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS% 114 | 115 | :endReadAdditionalConfig 116 | 117 | SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe" 118 | 119 | set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar" 120 | set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain 121 | 122 | %MAVEN_JAVA_EXE% %JVM_CONFIG_MAVEN_PROPS% %MAVEN_OPTS% %MAVEN_DEBUG_OPTS% -classpath %WRAPPER_JAR% "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %* 123 | if ERRORLEVEL 1 goto error 124 | goto end 125 | 126 | :error 127 | set ERROR_CODE=1 128 | 129 | :end 130 | @endlocal & set ERROR_CODE=%ERROR_CODE% 131 | 132 | if not "%MAVEN_SKIP_RC%" == "" goto skipRcPost 133 | @REM check for post script, once with legacy .bat ending and once with .cmd ending 134 | if exist "%HOME%\mavenrc_post.bat" call "%HOME%\mavenrc_post.bat" 135 | if exist "%HOME%\mavenrc_post.cmd" call "%HOME%\mavenrc_post.cmd" 136 | :skipRcPost 137 | 138 | @REM pause the script if MAVEN_BATCH_PAUSE is set to 'on' 139 | if "%MAVEN_BATCH_PAUSE%" == "on" pause 140 | 141 | if "%MAVEN_TERMINATE_CMD%" == "on" exit %ERROR_CODE% 142 | 143 | exit /B %ERROR_CODE% 144 | -------------------------------------------------------------------------------- /pom.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 4.0.0 5 | 6 | com.bslota 7 | transactional-event-listener 8 | 0.0.1-SNAPSHOT 9 | jar 10 | 11 | transactional-event-listener 12 | TransactionalEventListener annotation sample project 13 | 14 | 15 | org.springframework.boot 16 | spring-boot-starter-parent 17 | 1.5.4.RELEASE 18 | 19 | 20 | 21 | 22 | UTF-8 23 | UTF-8 24 | 1.8 25 | 26 | 27 | 28 | 29 | org.springframework.boot 30 | spring-boot-starter 31 | 32 | 33 | org.springframework.boot 34 | spring-boot-starter-data-jpa 35 | 36 | 37 | com.h2database 38 | h2 39 | 40 | 41 | org.springframework.boot 42 | spring-boot-starter-test 43 | test 44 | 45 | 46 | com.jayway.awaitility 47 | awaitility 48 | 1.7.0 49 | test 50 | 51 | 52 | 53 | 54 | 55 | 56 | org.springframework.boot 57 | spring-boot-maven-plugin 58 | 59 | 60 | 61 | 62 | 63 | 64 | -------------------------------------------------------------------------------- /src/main/java/com/bslota/transactional_event_listener/TransactionalEventListenerApplication.java: -------------------------------------------------------------------------------- 1 | package com.bslota.transactional_event_listener; 2 | 3 | import org.springframework.boot.SpringApplication; 4 | import org.springframework.boot.autoconfigure.SpringBootApplication; 5 | import org.springframework.scheduling.annotation.EnableAsync; 6 | 7 | @SpringBootApplication 8 | @EnableAsync 9 | public class TransactionalEventListenerApplication { 10 | 11 | public static void main(String[] args) { 12 | SpringApplication.run(TransactionalEventListenerApplication.class, args); 13 | } 14 | 15 | } 16 | -------------------------------------------------------------------------------- /src/main/java/com/bslota/transactional_event_listener/event/CustomerCreatedEvent.java: -------------------------------------------------------------------------------- 1 | package com.bslota.transactional_event_listener.event; 2 | 3 | import com.bslota.transactional_event_listener.model.Customer; 4 | 5 | /** 6 | * Created by bslota on 30.06.17. 7 | */ 8 | public class CustomerCreatedEvent { 9 | 10 | private final Customer customer; 11 | 12 | public CustomerCreatedEvent(Customer customer) { 13 | this.customer = customer; 14 | } 15 | 16 | public Customer getCustomer() { 17 | return customer; 18 | } 19 | 20 | @Override 21 | public String toString() { 22 | return "CustomerCreatedEvent{" + 23 | "customer=" + customer + 24 | '}'; 25 | } 26 | 27 | @Override 28 | public boolean equals(Object o) { 29 | if (this == o) return true; 30 | if (o == null || getClass() != o.getClass()) return false; 31 | 32 | CustomerCreatedEvent that = (CustomerCreatedEvent) o; 33 | 34 | return customer.equals(that.customer); 35 | } 36 | 37 | @Override 38 | public int hashCode() { 39 | return customer.hashCode(); 40 | } 41 | } 42 | -------------------------------------------------------------------------------- /src/main/java/com/bslota/transactional_event_listener/listener/CustomerCreatedEventAsyncListener.java: -------------------------------------------------------------------------------- 1 | package com.bslota.transactional_event_listener.listener; 2 | 3 | import com.bslota.transactional_event_listener.event.CustomerCreatedEvent; 4 | import com.bslota.transactional_event_listener.service.TokenGenerator; 5 | import org.slf4j.Logger; 6 | import org.slf4j.LoggerFactory; 7 | import org.springframework.context.annotation.Profile; 8 | import org.springframework.scheduling.annotation.Async; 9 | import org.springframework.stereotype.Component; 10 | import org.springframework.transaction.event.TransactionalEventListener; 11 | 12 | /** 13 | * Created by bslota on 30.06.17. 14 | */ 15 | @Component 16 | @Profile("async") 17 | public class CustomerCreatedEventAsyncListener { 18 | 19 | private static final Logger LOGGER = LoggerFactory.getLogger(CustomerCreatedEventAsyncListener.class); 20 | 21 | private final TokenGenerator tokenGenerator; 22 | 23 | public CustomerCreatedEventAsyncListener(TokenGenerator tokenGenerator) { 24 | this.tokenGenerator = tokenGenerator; 25 | } 26 | 27 | @TransactionalEventListener 28 | @Async 29 | public void processCustomerCreatedEvent(CustomerCreatedEvent event) { 30 | LOGGER.info("Event received: " + event); 31 | tokenGenerator.generateToken(event.getCustomer()); 32 | } 33 | } 34 | -------------------------------------------------------------------------------- /src/main/java/com/bslota/transactional_event_listener/listener/CustomerCreatedEventListener.java: -------------------------------------------------------------------------------- 1 | package com.bslota.transactional_event_listener.listener; 2 | 3 | import com.bslota.transactional_event_listener.event.CustomerCreatedEvent; 4 | import com.bslota.transactional_event_listener.service.TokenGenerator; 5 | import org.slf4j.Logger; 6 | import org.slf4j.LoggerFactory; 7 | import org.springframework.context.annotation.Profile; 8 | import org.springframework.context.event.EventListener; 9 | import org.springframework.scheduling.annotation.Async; 10 | import org.springframework.stereotype.Component; 11 | import org.springframework.transaction.event.TransactionalEventListener; 12 | 13 | /** 14 | * Created by bslota on 30.06.17. 15 | */ 16 | @Component 17 | @Profile("!async") 18 | public class CustomerCreatedEventListener { 19 | 20 | private static final Logger LOGGER = LoggerFactory.getLogger(CustomerCreatedEventListener.class); 21 | 22 | private final TokenGenerator tokenGenerator; 23 | 24 | public CustomerCreatedEventListener(TokenGenerator tokenGenerator) { 25 | this.tokenGenerator = tokenGenerator; 26 | } 27 | 28 | @TransactionalEventListener 29 | public void processCustomerCreatedEvent(CustomerCreatedEvent event) { 30 | LOGGER.info("Event received: " + event); 31 | tokenGenerator.generateToken(event.getCustomer()); 32 | } 33 | } 34 | -------------------------------------------------------------------------------- /src/main/java/com/bslota/transactional_event_listener/model/Customer.java: -------------------------------------------------------------------------------- 1 | package com.bslota.transactional_event_listener.model; 2 | 3 | import org.springframework.util.StringUtils; 4 | 5 | import javax.persistence.Entity; 6 | import javax.persistence.GeneratedValue; 7 | import javax.persistence.GenerationType; 8 | import javax.persistence.Id; 9 | 10 | /** 11 | * Created by bslota on 30.06.17. 12 | */ 13 | @Entity 14 | public class Customer { 15 | @Id 16 | @GeneratedValue(strategy = GenerationType.IDENTITY) 17 | private Long id; 18 | private String name; 19 | private String email; 20 | private String token; 21 | 22 | public Customer() { 23 | } 24 | 25 | public Customer(String name, String email) { 26 | this.name = name; 27 | this.email = email; 28 | } 29 | 30 | public Long getId() { 31 | return id; 32 | } 33 | 34 | public String getName() { 35 | return name; 36 | } 37 | 38 | public String getEmail() { 39 | return email; 40 | } 41 | 42 | public void activatedWith(String token) { 43 | this.token = token; 44 | } 45 | 46 | public boolean hasToken() { 47 | return !StringUtils.isEmpty(token); 48 | } 49 | 50 | @Override 51 | public String toString() { 52 | return "Customer{" + 53 | "id=" + id + 54 | ", name='" + name + '\'' + 55 | ", email='" + email + '\'' + 56 | ", token='" + token + '\'' + 57 | '}'; 58 | } 59 | 60 | @Override 61 | public boolean equals(Object o) { 62 | if (this == o) return true; 63 | if (o == null || getClass() != o.getClass()) return false; 64 | 65 | Customer customer = (Customer) o; 66 | 67 | if (id != null ? !id.equals(customer.id) : customer.id != null) return false; 68 | if (name != null ? !name.equals(customer.name) : customer.name != null) return false; 69 | if (email != null ? !email.equals(customer.email) : customer.email != null) return false; 70 | return token != null ? token.equals(customer.token) : customer.token == null; 71 | } 72 | 73 | @Override 74 | public int hashCode() { 75 | int result = id != null ? id.hashCode() : 0; 76 | result = 31 * result + (name != null ? name.hashCode() : 0); 77 | result = 31 * result + (email != null ? email.hashCode() : 0); 78 | result = 31 * result + (token != null ? token.hashCode() : 0); 79 | return result; 80 | } 81 | } 82 | -------------------------------------------------------------------------------- /src/main/java/com/bslota/transactional_event_listener/repository/CustomerRepository.java: -------------------------------------------------------------------------------- 1 | package com.bslota.transactional_event_listener.repository; 2 | 3 | import com.bslota.transactional_event_listener.model.Customer; 4 | import org.springframework.data.jpa.repository.JpaRepository; 5 | 6 | /** 7 | * Created by bslota on 30.06.17. 8 | */ 9 | public interface CustomerRepository extends JpaRepository { 10 | } 11 | -------------------------------------------------------------------------------- /src/main/java/com/bslota/transactional_event_listener/service/AsyncCallTokenGenerator.java: -------------------------------------------------------------------------------- 1 | package com.bslota.transactional_event_listener.service; 2 | 3 | import com.bslota.transactional_event_listener.model.Customer; 4 | import com.bslota.transactional_event_listener.repository.CustomerRepository; 5 | import org.springframework.context.annotation.Profile; 6 | import org.springframework.stereotype.Service; 7 | 8 | /** 9 | * Created by bslota on 03.07.17. 10 | */ 11 | @Service 12 | @Profile("async") 13 | public class AsyncCallTokenGenerator implements TokenGenerator { 14 | 15 | private final CustomerRepository customerRepository; 16 | 17 | public AsyncCallTokenGenerator(CustomerRepository customerRepository) { 18 | this.customerRepository = customerRepository; 19 | } 20 | 21 | public void generateToken(Customer customer) { 22 | final String token = String.valueOf(customer.hashCode()); 23 | customer.activatedWith(token); 24 | customerRepository.save(customer); 25 | } 26 | } 27 | -------------------------------------------------------------------------------- /src/main/java/com/bslota/transactional_event_listener/service/CustomerService.java: -------------------------------------------------------------------------------- 1 | package com.bslota.transactional_event_listener.service; 2 | 3 | import com.bslota.transactional_event_listener.event.CustomerCreatedEvent; 4 | import com.bslota.transactional_event_listener.model.Customer; 5 | import com.bslota.transactional_event_listener.repository.CustomerRepository; 6 | import org.springframework.context.ApplicationEventPublisher; 7 | import org.springframework.stereotype.Service; 8 | import org.springframework.transaction.annotation.Transactional; 9 | 10 | 11 | /** 12 | * Created by bslota on 30.06.17. 13 | */ 14 | @Service 15 | public class CustomerService { 16 | 17 | private final CustomerRepository customerRepository; 18 | private final ApplicationEventPublisher applicationEventPublisher; 19 | 20 | public CustomerService(CustomerRepository customerRepository, ApplicationEventPublisher applicationEventPublisher) { 21 | this.customerRepository = customerRepository; 22 | this.applicationEventPublisher = applicationEventPublisher; 23 | } 24 | 25 | @Transactional 26 | public Customer createCustomer(String name, String email) { 27 | final Customer newCustomer = customerRepository.save(new Customer(name, email)); 28 | final CustomerCreatedEvent event = new CustomerCreatedEvent(newCustomer); 29 | applicationEventPublisher.publishEvent(event); 30 | return newCustomer; 31 | } 32 | } 33 | -------------------------------------------------------------------------------- /src/main/java/com/bslota/transactional_event_listener/service/DefaultTokenGenerator.java: -------------------------------------------------------------------------------- 1 | package com.bslota.transactional_event_listener.service; 2 | 3 | import com.bslota.transactional_event_listener.model.Customer; 4 | import com.bslota.transactional_event_listener.repository.CustomerRepository; 5 | import org.springframework.context.annotation.Profile; 6 | import org.springframework.stereotype.Service; 7 | import org.springframework.transaction.annotation.Propagation; 8 | import org.springframework.transaction.annotation.Transactional; 9 | 10 | /** 11 | * Created by bslota on 03.07.17. 12 | */ 13 | @Service 14 | @Profile("!async") 15 | public class DefaultTokenGenerator implements TokenGenerator { 16 | 17 | private final CustomerRepository customerRepository; 18 | 19 | public DefaultTokenGenerator(CustomerRepository customerRepository) { 20 | this.customerRepository = customerRepository; 21 | } 22 | 23 | @Transactional(propagation = Propagation.REQUIRES_NEW) 24 | public void generateToken(Customer customer) { 25 | final String token = String.valueOf(customer.hashCode()); 26 | customer.activatedWith(token); 27 | customerRepository.save(customer); 28 | } 29 | } 30 | -------------------------------------------------------------------------------- /src/main/java/com/bslota/transactional_event_listener/service/TokenGenerator.java: -------------------------------------------------------------------------------- 1 | package com.bslota.transactional_event_listener.service; 2 | 3 | import com.bslota.transactional_event_listener.model.Customer; 4 | 5 | /** 6 | * Created by bslota on 03.07.17. 7 | */ 8 | public interface TokenGenerator { 9 | 10 | void generateToken(Customer customer); 11 | } 12 | -------------------------------------------------------------------------------- /src/main/resources/application.yml: -------------------------------------------------------------------------------- 1 | spring: 2 | application: 3 | name: transactional-event-listener -------------------------------------------------------------------------------- /src/test/java/com/bslota/transactional_event_listener/service/CustomerServiceAsyncTest.java: -------------------------------------------------------------------------------- 1 | package com.bslota.transactional_event_listener.service; 2 | 3 | import com.bslota.transactional_event_listener.model.Customer; 4 | import com.bslota.transactional_event_listener.repository.CustomerRepository; 5 | import org.junit.Test; 6 | import org.junit.runner.RunWith; 7 | import org.springframework.beans.factory.annotation.Autowired; 8 | import org.springframework.boot.test.context.SpringBootTest; 9 | import org.springframework.test.context.ActiveProfiles; 10 | import org.springframework.test.context.junit4.SpringRunner; 11 | 12 | import static com.jayway.awaitility.Awaitility.await; 13 | import static java.util.concurrent.TimeUnit.SECONDS; 14 | import static org.junit.Assert.assertEquals; 15 | 16 | /** 17 | * Created by bslota on 01.07.17. 18 | */ 19 | @SpringBootTest 20 | @RunWith(SpringRunner.class) 21 | @ActiveProfiles("async") 22 | public class CustomerServiceAsyncTest { 23 | 24 | @Autowired 25 | private CustomerService customerService; 26 | 27 | @Autowired 28 | private CustomerRepository customerRepository; 29 | 30 | @Test 31 | public void shouldPersistCustomerWithToken() throws Exception { 32 | //when 33 | final Customer returnedCustomer = customerService.createCustomer("Matt", "matt@gmail.com"); 34 | 35 | //then 36 | assertEquals("matt@gmail.com", returnedCustomer.getEmail()); 37 | assertEquals("Matt", returnedCustomer.getName()); 38 | 39 | //and 40 | await().atMost(5, SECONDS) 41 | .until(() -> customerTokenIsPersisted(returnedCustomer.getId())); 42 | } 43 | 44 | private boolean customerTokenIsPersisted(Long id) { 45 | final Customer persistedCustomer = customerRepository.findOne(id); 46 | return persistedCustomer.hasToken(); 47 | } 48 | 49 | } -------------------------------------------------------------------------------- /src/test/java/com/bslota/transactional_event_listener/service/CustomerServiceTest.java: -------------------------------------------------------------------------------- 1 | package com.bslota.transactional_event_listener.service; 2 | 3 | import com.bslota.transactional_event_listener.model.Customer; 4 | import com.bslota.transactional_event_listener.repository.CustomerRepository; 5 | import org.junit.Test; 6 | import org.junit.runner.RunWith; 7 | import org.springframework.beans.factory.annotation.Autowired; 8 | import org.springframework.boot.test.context.SpringBootTest; 9 | import org.springframework.test.context.junit4.SpringRunner; 10 | 11 | import static junit.framework.TestCase.assertTrue; 12 | import static org.junit.Assert.assertEquals; 13 | 14 | /** 15 | * Created by bslota on 01.07.17. 16 | */ 17 | @SpringBootTest 18 | @RunWith(SpringRunner.class) 19 | public class CustomerServiceTest { 20 | 21 | @Autowired 22 | private CustomerService customerService; 23 | 24 | @Autowired 25 | private CustomerRepository customerRepository; 26 | 27 | @Test 28 | public void shouldPersistCustomerWithToken() throws Exception { 29 | //when 30 | final Customer returnedCustomer = customerService.createCustomer("Matt", "matt@gmail.com"); 31 | 32 | //then 33 | final Customer persistedCustomer = customerRepository.findOne(returnedCustomer.getId()); 34 | assertEquals("matt@gmail.com", returnedCustomer.getEmail()); 35 | assertEquals("Matt", returnedCustomer.getName()); 36 | assertTrue(returnedCustomer.hasToken()); 37 | assertEquals(returnedCustomer, persistedCustomer); 38 | } 39 | 40 | 41 | } --------------------------------------------------------------------------------