diff --git a/multibinder-differentsystems/src/main/resources/application.yml b/multibinder-differentsystems/src/main/resources/application.yml index 9844b4f..bbddc06 100644 --- a/multibinder-differentsystems/src/main/resources/application.yml +++ b/multibinder-differentsystems/src/main/resources/application.yml @@ -8,9 +8,9 @@ spring: destination: dataIn binder: kafka1 group: testGroup - output: - destination: dataOut - binder: kafka2 +# output: +# destination: dataOut +# binder: kafka2 binders: kafka1: type: kafka @@ -22,13 +22,13 @@ spring: binder: brokers: ${kafkaBroker1} zkNodes: ${zk1} - kafka2: - type: kafka - environment: - spring: - cloud: - stream: - kafka: - binder: - brokers: ${kafkaBroker2} - zkNodes: ${zk2} +# kafka2: +# type: kafka +# environment: +# spring: +# cloud: +# stream: +# kafka: +# binder: +# brokers: ${kafkaBroker2} +# zkNodes: ${zk2} diff --git a/pom.xml b/pom.xml index 31e272d..ccdf18b 100644 --- a/pom.xml +++ b/pom.xml @@ -23,6 +23,7 @@ jdbc-sink jdbc-source + stream-listener-basic dynamic-source transform double @@ -30,7 +31,6 @@ multibinder-differentsystems multi-io - stream-listener reactive-processor-kafka test-embedded-kafka kinesis-produce-consume diff --git a/stream-listener-basic/.mvn b/stream-listener-basic/.mvn new file mode 120000 index 0000000..19172e1 --- /dev/null +++ b/stream-listener-basic/.mvn @@ -0,0 +1 @@ +../.mvn \ No newline at end of file diff --git a/stream-listener-basic/README.adoc b/stream-listener-basic/README.adoc new file mode 100644 index 0000000..595b4c2 --- /dev/null +++ b/stream-listener-basic/README.adoc @@ -0,0 +1,58 @@ +Spring Cloud Stream StreamListener Basic Sample +================================================ + +In this *Spring Cloud Stream* sample, the application shows how to use StreamListener support to enable message mapping and automatic type conversion. + +## Requirements + +To run this sample, you will need to have installed: + +* Java 8 or Above + +## Code Tour + +This sample is a Spring Boot application that bundles multiple application together to showcase how to use StreamListener to enable message mapping and automatic type conversion. + +* TypeConversionApplication - the Spring Boot Main Application +* POJO's - Simple data classes - `Foo` and `Bar` +* SampleSource - the app that generates JSON string of the form `"{\"value\":\"hi\"}"` and then send that to an outbound channnel. +* SampleTransformer - the app that has the method annotated with `@StreamListener` to map the process input channel to a type `Bar`. + The annotation @SendTo on the `StreamListener` method will make sure to send the output to the provided output channel. +* SampleSink - the app that receives the converted message from the transformer output as type `Foo`. + +Please note that the applications (SampleSource, SampleTransformer and SampleSink) are bundled inside the single application for the demo purpose only. +In practice, these applications run on their own. +If at all they need to be bundled together, the best practice is to use `AggregateApplicationBuilder`. +Refer the sample `double` for more info on aggregate application. + +## Running the application + +The following instructions assume that you are running Kafka as a Docker image. + +* Go to the application root +* `docker-compose up -d` + +* `./mvnw clean package` + +* `java -jar target/streamlistener-basic-0.0.1-SNAPSHOT.jar` + +The application will log messages from source, transformer and sink. +Source sends a message every second which will initiate the processor and then the sink. +If you want to change this frequency, modify the `fixedDelay` parameter in the Source for the `InboundChannelAdapter`. +By default, you will see output similar to the following every second. + +``` +****************** +At the Source +****************** +Sending value: {"value":"hi"} +****************** +At the transformer +****************** +Received value hi of type class demo.Bar +Transforming the value to HI and with the type class demo.Bar +****************** +At the Sink +****************** +Received transformed message HI of type class demo.Foo +``` \ No newline at end of file diff --git a/stream-listener-basic/docker-compose.yml b/stream-listener-basic/docker-compose.yml new file mode 100644 index 0000000..d47d783 --- /dev/null +++ b/stream-listener-basic/docker-compose.yml @@ -0,0 +1,18 @@ +version: '2' +services: + kafka: + image: wurstmeister/kafka + ports: + - "9092:9092" + environment: + - KAFKA_ADVERTISED_HOST_NAME=127.0.0.1 + - KAFKA_ADVERTISED_PORT=9092 + - KAFKA_ZOOKEEPER_CONNECT=zookeeper:2181 + depends_on: + - zookeeper + zookeeper: + image: wurstmeister/zookeeper + ports: + - "2181:2181" + environment: + - KAFKA_ADVERTISED_HOST_NAME=zookeeper \ No newline at end of file diff --git a/stream-listener-basic/mvnw b/stream-listener-basic/mvnw new file mode 100755 index 0000000..6efc7bd --- /dev/null +++ b/stream-listener-basic/mvnw @@ -0,0 +1,226 @@ +#!/bin/sh +# ---------------------------------------------------------------------------- +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you 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 +# +# http://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. +# ---------------------------------------------------------------------------- + +# ---------------------------------------------------------------------------- +# Maven2 Start Up Batch script +# +# Required ENV vars: +# ------------------ +# JAVA_HOME - location of a JDK home dir +# +# Optional ENV vars +# ----------------- +# M2_HOME - location of maven2's installed home dir +# MAVEN_OPTS - parameters passed to the Java VM when running Maven +# e.g. to debug Maven itself, use +# set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000 +# MAVEN_SKIP_RC - flag to disable loading of mavenrc files +# ---------------------------------------------------------------------------- + +if [ -z "$MAVEN_SKIP_RC" ] ; then + + if [ -f /etc/mavenrc ] ; then + . /etc/mavenrc + fi + + if [ -f "$HOME/.mavenrc" ] ; then + . "$HOME/.mavenrc" + fi + +fi + +# OS specific support. $var _must_ be set to either true or false. +cygwin=false; +darwin=false; +mingw=false +case "`uname`" in + CYGWIN*) cygwin=true ;; + MINGW*) mingw=true;; + Darwin*) darwin=true + # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home + # See https://developer.apple.com/library/mac/qa/qa1170/_index.html + if [ -z "$JAVA_HOME" ]; then + if [ -x "/usr/libexec/java_home" ]; then + export JAVA_HOME="`/usr/libexec/java_home`" + else + export JAVA_HOME="/Library/Java/Home" + fi + fi + ;; +esac + +if [ -z "$JAVA_HOME" ] ; then + if [ -r /etc/gentoo-release ] ; then + JAVA_HOME=`java-config --jre-home` + fi +fi + +if [ -z "$M2_HOME" ] ; then + ## resolve links - $0 may be a link to maven's home + PRG="$0" + + # need this for relative symlinks + while [ -h "$PRG" ] ; do + ls=`ls -ld "$PRG"` + link=`expr "$ls" : '.*-> \(.*\)$'` + if expr "$link" : '/.*' > /dev/null; then + PRG="$link" + else + PRG="`dirname "$PRG"`/$link" + fi + done + + saveddir=`pwd` + + M2_HOME=`dirname "$PRG"`/.. + + # make it fully qualified + M2_HOME=`cd "$M2_HOME" && pwd` + + cd "$saveddir" + # echo Using m2 at $M2_HOME +fi + +# For Cygwin, ensure paths are in UNIX format before anything is touched +if $cygwin ; then + [ -n "$M2_HOME" ] && + M2_HOME=`cygpath --unix "$M2_HOME"` + [ -n "$JAVA_HOME" ] && + JAVA_HOME=`cygpath --unix "$JAVA_HOME"` + [ -n "$CLASSPATH" ] && + CLASSPATH=`cygpath --path --unix "$CLASSPATH"` +fi + +# For Migwn, ensure paths are in UNIX format before anything is touched +if $mingw ; then + [ -n "$M2_HOME" ] && + M2_HOME="`(cd "$M2_HOME"; pwd)`" + [ -n "$JAVA_HOME" ] && + JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`" + # TODO classpath? +fi + +if [ -z "$JAVA_HOME" ]; then + javaExecutable="`which javac`" + if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then + # readlink(1) is not available as standard on Solaris 10. + readLink=`which readlink` + if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then + if $darwin ; then + javaHome="`dirname \"$javaExecutable\"`" + javaExecutable="`cd \"$javaHome\" && pwd -P`/javac" + else + javaExecutable="`readlink -f \"$javaExecutable\"`" + fi + javaHome="`dirname \"$javaExecutable\"`" + javaHome=`expr "$javaHome" : '\(.*\)/bin'` + JAVA_HOME="$javaHome" + export JAVA_HOME + fi + fi +fi + +if [ -z "$JAVACMD" ] ; then + 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 + else + JAVACMD="`which java`" + fi +fi + +if [ ! -x "$JAVACMD" ] ; then + echo "Error: JAVA_HOME is not defined correctly." >&2 + echo " We cannot execute $JAVACMD" >&2 + exit 1 +fi + +if [ -z "$JAVA_HOME" ] ; then + echo "Warning: JAVA_HOME environment variable is not set." +fi + +CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher + +# traverses directory structure from process work directory to filesystem root +# first directory with .mvn subdirectory is considered project base directory +find_maven_basedir() { + + if [ -z "$1" ] + then + echo "Path not specified to find_maven_basedir" + return 1 + fi + + basedir="$1" + wdir="$1" + while [ "$wdir" != '/' ] ; do + if [ -d "$wdir"/.mvn ] ; then + basedir=$wdir + break + fi + # workaround for JBEAP-8937 (on Solaris 10/Sparc) + if [ -d "${wdir}" ]; then + wdir=`cd "$wdir/.."; pwd` + fi + # end of workaround + done + echo "${basedir}" +} + +# concatenates all lines of a file +concat_lines() { + if [ -f "$1" ]; then + echo "$(tr -s '\n' ' ' < "$1")" + fi +} + +BASE_DIR=`find_maven_basedir "$(pwd)"` +if [ -z "$BASE_DIR" ]; then + exit 1; +fi + +export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"} +echo $MAVEN_PROJECTBASEDIR +MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS" + +# For Cygwin, switch paths to Windows format before running java +if $cygwin; then + [ -n "$M2_HOME" ] && + M2_HOME=`cygpath --path --windows "$M2_HOME"` + [ -n "$JAVA_HOME" ] && + JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"` + [ -n "$CLASSPATH" ] && + CLASSPATH=`cygpath --path --windows "$CLASSPATH"` + [ -n "$MAVEN_PROJECTBASEDIR" ] && + MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"` +fi + +WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain + +"$JAVACMD" \ + $MAVEN_OPTS \ + -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \ + "-Dmaven.home=${M2_HOME}" "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \ + ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@" + diff --git a/stream-listener-basic/mvnw.cmd b/stream-listener-basic/mvnw.cmd new file mode 100644 index 0000000..b0dc0e7 --- /dev/null +++ b/stream-listener-basic/mvnw.cmd @@ -0,0 +1,145 @@ +@REM ---------------------------------------------------------------------------- +@REM Licensed to the Apache Software Foundation (ASF) under one +@REM or more contributor license agreements. See the NOTICE file +@REM distributed with this work for additional information +@REM regarding copyright ownership. The ASF licenses this file +@REM to you under the Apache License, Version 2.0 (the +@REM "License"); you may not use this file except in compliance +@REM with the License. You may obtain a copy of the License at +@REM +@REM http://www.apache.org/licenses/LICENSE-2.0 +@REM +@REM Unless required by applicable law or agreed to in writing, +@REM software distributed under the License is distributed on an +@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +@REM KIND, either express or implied. See the License for the +@REM specific language governing permissions and limitations +@REM under the License. +@REM ---------------------------------------------------------------------------- + +@REM ---------------------------------------------------------------------------- +@REM Maven2 Start Up Batch script +@REM +@REM Required ENV vars: +@REM JAVA_HOME - location of a JDK home dir +@REM +@REM Optional ENV vars +@REM M2_HOME - location of maven2's installed home dir +@REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands +@REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a key stroke before ending +@REM MAVEN_OPTS - parameters passed to the Java VM when running Maven +@REM e.g. to debug Maven itself, use +@REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000 +@REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files +@REM ---------------------------------------------------------------------------- + +@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on' +@echo off +@REM enable echoing my setting MAVEN_BATCH_ECHO to 'on' +@if "%MAVEN_BATCH_ECHO%" == "on" echo %MAVEN_BATCH_ECHO% + +@REM set %HOME% to equivalent of $HOME +if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%") + +@REM Execute a user defined script before this one +if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre +@REM check for pre script, once with legacy .bat ending and once with .cmd ending +if exist "%HOME%\mavenrc_pre.bat" call "%HOME%\mavenrc_pre.bat" +if exist "%HOME%\mavenrc_pre.cmd" call "%HOME%\mavenrc_pre.cmd" +:skipRcPre + +@setlocal + +set ERROR_CODE=0 + +@REM To isolate internal variables from possible post scripts, we use another setlocal +@setlocal + +@REM ==== START VALIDATION ==== +if not "%JAVA_HOME%" == "" goto OkJHome + +echo. +echo Error: JAVA_HOME not found in your environment. >&2 +echo Please set the JAVA_HOME variable in your environment to match the >&2 +echo location of your Java installation. >&2 +echo. +goto error + +:OkJHome +if exist "%JAVA_HOME%\bin\java.exe" goto init + +echo. +echo Error: JAVA_HOME is set to an invalid directory. >&2 +echo JAVA_HOME = "%JAVA_HOME%" >&2 +echo Please set the JAVA_HOME variable in your environment to match the >&2 +echo location of your Java installation. >&2 +echo. +goto error + +@REM ==== END VALIDATION ==== + +:init + +set MAVEN_CMD_LINE_ARGS=%* + +@REM Find the project base dir, i.e. the directory that contains the folder ".mvn". +@REM Fallback to current working directory if not found. + +set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR% +IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir + +set EXEC_DIR=%CD% +set WDIR=%EXEC_DIR% +:findBaseDir +IF EXIST "%WDIR%"\.mvn goto baseDirFound +cd .. +IF "%WDIR%"=="%CD%" goto baseDirNotFound +set WDIR=%CD% +goto findBaseDir + +:baseDirFound +set MAVEN_PROJECTBASEDIR=%WDIR% +cd "%EXEC_DIR%" +goto endDetectBaseDir + +:baseDirNotFound +set MAVEN_PROJECTBASEDIR=%EXEC_DIR% +cd "%EXEC_DIR%" + +:endDetectBaseDir + +IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig + +@setlocal EnableExtensions EnableDelayedExpansion +for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a +@endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS% + +:endReadAdditionalConfig + +SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe" + +set WRAPPER_JAR="".\.mvn\wrapper\maven-wrapper.jar"" +set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain + +%MAVEN_JAVA_EXE% %JVM_CONFIG_MAVEN_PROPS% %MAVEN_OPTS% %MAVEN_DEBUG_OPTS% -classpath %WRAPPER_JAR% "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" %WRAPPER_LAUNCHER% %MAVEN_CMD_LINE_ARGS% +if ERRORLEVEL 1 goto error +goto end + +:error +set ERROR_CODE=1 + +:end +@endlocal & set ERROR_CODE=%ERROR_CODE% + +if not "%MAVEN_SKIP_RC%" == "" goto skipRcPost +@REM check for post script, once with legacy .bat ending and once with .cmd ending +if exist "%HOME%\mavenrc_post.bat" call "%HOME%\mavenrc_post.bat" +if exist "%HOME%\mavenrc_post.cmd" call "%HOME%\mavenrc_post.cmd" +:skipRcPost + +@REM pause the script if MAVEN_BATCH_PAUSE is set to 'on' +if "%MAVEN_BATCH_PAUSE%" == "on" pause + +if "%MAVEN_TERMINATE_CMD%" == "on" exit %ERROR_CODE% + +exit /B %ERROR_CODE% diff --git a/stream-listener/pom.xml b/stream-listener-basic/pom.xml similarity index 89% rename from stream-listener/pom.xml rename to stream-listener-basic/pom.xml index 2cd1fab..0fb3c09 100644 --- a/stream-listener/pom.xml +++ b/stream-listener-basic/pom.xml @@ -4,11 +4,11 @@ 4.0.0 spring.cloud.stream.samples - streamlistener-basic-sample + streamlistener-basic 0.0.1-SNAPSHOT jar - streamlistener-basic-sample + streamlistener-basic Demo project for Spring Boot @@ -22,10 +22,14 @@ UTF-8 UTF-8 1.8 - Finchley.M7 + Finchley.BUILD-SNAPSHOT + + org.springframework.boot + spring-boot-starter-actuator + org.springframework.boot spring-boot-starter diff --git a/stream-listener/src/main/java/demo/Bar.java b/stream-listener-basic/src/main/java/demo/Bar.java similarity index 100% rename from stream-listener/src/main/java/demo/Bar.java rename to stream-listener-basic/src/main/java/demo/Bar.java diff --git a/stream-listener/src/main/java/demo/Foo.java b/stream-listener-basic/src/main/java/demo/Foo.java similarity index 100% rename from stream-listener/src/main/java/demo/Foo.java rename to stream-listener-basic/src/main/java/demo/Foo.java diff --git a/stream-listener/src/main/java/demo/SampleSink.java b/stream-listener-basic/src/main/java/demo/SampleSink.java similarity index 89% rename from stream-listener/src/main/java/demo/SampleSink.java rename to stream-listener-basic/src/main/java/demo/SampleSink.java index 9b0e638..1bff86e 100644 --- a/stream-listener/src/main/java/demo/SampleSink.java +++ b/stream-listener-basic/src/main/java/demo/SampleSink.java @@ -29,11 +29,11 @@ public class SampleSink { // Sink application definition @StreamListener(Sink.SAMPLE) - public void receive(Foo fooMessage) { + public void receive(Foo foo) { System.out.println("******************"); System.out.println("At the Sink"); System.out.println("******************"); - System.out.println("Received transformed message " + fooMessage.getValue() + " of type " + fooMessage.getClass()); + System.out.println("Received transformed message " + foo.getValue() + " of type " + foo.getClass()); } public interface Sink { diff --git a/stream-listener/src/main/java/demo/SampleSource.java b/stream-listener-basic/src/main/java/demo/SampleSource.java similarity index 89% rename from stream-listener/src/main/java/demo/SampleSource.java rename to stream-listener-basic/src/main/java/demo/SampleSource.java index 30fd7f0..ab7da49 100644 --- a/stream-listener/src/main/java/demo/SampleSource.java +++ b/stream-listener-basic/src/main/java/demo/SampleSource.java @@ -24,8 +24,6 @@ import org.springframework.integration.annotation.Poller; import org.springframework.integration.core.MessageSource; import org.springframework.messaging.Message; import org.springframework.messaging.MessageChannel; -import org.springframework.messaging.MessageHeaders; -import org.springframework.messaging.support.GenericMessage; import org.springframework.messaging.support.MessageBuilder; /** @@ -44,7 +42,7 @@ public class SampleSource { System.out.println("******************"); String value = "{\"value\":\"hi\"}"; System.out.println("Sending value: " + value); - return MessageBuilder.withPayload(value).setHeader(MessageHeaders.CONTENT_TYPE, "application/json").build(); + return MessageBuilder.withPayload(value).build(); } }; } diff --git a/stream-listener/src/main/java/demo/SampleTransformer.java b/stream-listener-basic/src/main/java/demo/SampleTransformer.java similarity index 83% rename from stream-listener/src/main/java/demo/SampleTransformer.java rename to stream-listener-basic/src/main/java/demo/SampleTransformer.java index aa12b17..0ee0414 100644 --- a/stream-listener/src/main/java/demo/SampleTransformer.java +++ b/stream-listener-basic/src/main/java/demo/SampleTransformer.java @@ -33,13 +33,13 @@ public class SampleTransformer { @StreamListener(Processor.INPUT) @SendTo(Processor.OUTPUT) - public Bar receive(Bar barMessage) { + public Bar receive(Bar bar) { System.out.println("******************"); System.out.println("At the transformer"); System.out.println("******************"); - System.out.println("Received value "+ barMessage.getValue() + " of type " + barMessage.getClass()); - System.out.println("Transforming the value to " + TRANSFORMATION_VALUE + " and with the type " + barMessage.getClass()); - barMessage.setValue(TRANSFORMATION_VALUE); - return barMessage; + System.out.println("Received value "+ bar.getValue() + " of type " + bar.getClass()); + System.out.println("Transforming the value to " + TRANSFORMATION_VALUE + " and with the type " + bar.getClass()); + bar.setValue(TRANSFORMATION_VALUE); + return bar; } } diff --git a/stream-listener/src/main/java/demo/TypeConversionApplication.java b/stream-listener-basic/src/main/java/demo/TypeConversionApplication.java similarity index 100% rename from stream-listener/src/main/java/demo/TypeConversionApplication.java rename to stream-listener-basic/src/main/java/demo/TypeConversionApplication.java diff --git a/stream-listener/src/main/resources/application.yml b/stream-listener-basic/src/main/resources/application.yml similarity index 79% rename from stream-listener/src/main/resources/application.yml rename to stream-listener-basic/src/main/resources/application.yml index 98eda29..78f2521 100644 --- a/stream-listener/src/main/resources/application.yml +++ b/stream-listener-basic/src/main/resources/application.yml @@ -1,5 +1,3 @@ -server: - port: 8082 spring: cloud: stream: @@ -10,6 +8,5 @@ spring: destination: testtock output: destination: xformed - content-type: application/json sample-sink: destination: xformed diff --git a/stream-listener/src/test/java/demo/ModuleApplicationTests.java b/stream-listener-basic/src/test/java/demo/ModuleApplicationTests.java similarity index 100% rename from stream-listener/src/test/java/demo/ModuleApplicationTests.java rename to stream-listener-basic/src/test/java/demo/ModuleApplicationTests.java diff --git a/stream-listener-basic/start-kafka-shell.sh b/stream-listener-basic/start-kafka-shell.sh new file mode 100755 index 0000000..62663e4 --- /dev/null +++ b/stream-listener-basic/start-kafka-shell.sh @@ -0,0 +1,2 @@ +#!/bin/bash +docker run --rm -v /var/run/docker.sock:/var/run/docker.sock -e HOST_IP=$1 -e ZK=$2 -i -t wurstmeister/kafka /bin/bash diff --git a/stream-listener/README.md b/stream-listener/README.md deleted file mode 100644 index 8849016..0000000 --- a/stream-listener/README.md +++ /dev/null @@ -1,42 +0,0 @@ -Spring Cloud Stream Stream Listener Sample -============================= - -In this *Spring Cloud Stream* sample, the application shows how to use StreamListener support to enable message mapping and automatic type conversion. - -## Requirements - -To run this sample, you will need to have installed: - -* Java 8 or Above - -This example requires Redis to be running on localhost. - -## Code Tour - -This sample is a Spring Boot application that bundles multiple application together to showcase how to use StreamListener to enable -message mapping and automatic type conversion. - -* TypeConversionApplication - the Spring Boot Main Application -* Converters - the class that holds the required custom message converter that converts POJO of type `Foo` to `Bar` -* SampleSource - the app that generates a message of type `Foo` that has the value `hi` -* SampleTransformer - the app that has the message handler method annotated with @StreamListener to map the process input channel to a type `Bar`. - This will make sure to apply `FooToBarConverter` automatically without having a need to specify `content-type` for the channel explicitly. - The annotation @SendTo on the message handler method will make sure to send the output to the provided output channel. -* SampleSink - the app that receives the converted message from the transformer output. - -Please note that the applications (SampleSource, SampleTransformer and SampleSink) are bundled inside the single application for the demo -purpose only. In practice, these applications run on their own. If at all they need to be bundled together, the best practice is to use -`AggregateApplicationBuilder`. Refer the sample `double` for more info on aggregate application. - -## Building with Maven - -Build the sample by executing: - - >$ mvn clean package - -## Running the Sample - -To start the source module execute the following: - - >$ java -jar target/spring-cloud-stream-sample-stream-listener-1.0.0.BUILD-SNAPSHOT-exec.jar -