diff --git a/schema-registry-samples/schema-registry-vanilla/README.adoc b/schema-registry-samples/schema-registry-vanilla/README.adoc
index 52dd158..03b245f 100644
--- a/schema-registry-samples/schema-registry-vanilla/README.adoc
+++ b/schema-registry-samples/schema-registry-vanilla/README.adoc
@@ -33,6 +33,11 @@ java -jar registry/target/registry-0.0.1-SNAPSHOT.jar
----
java -jar consumer/target/consumer-0.0.1-SNAPSHOT.jar
----
+- If you want to see how a Spring Cloud Stream application with Kafka Streams work with the schema registry, start the Kafka Streams consumer application.
+This step only works, if you are using Kafka as the middleware.
+----
+java -jar kafka-streams-consumer/target/kafka-streams-consumer-0.0.1-SNAPSHOT.jar
+----
- Start `producer1` on another terminal session
[source,bash]
----
@@ -73,6 +78,17 @@ The consumer should log the results.
NOTE: Refer to the payload suffix in the `id` field. Each of them are appended with `-v1` or `-v2` indicating they are from
`producer1` and `producer2` respectively.
+If you are running the Kafka Streams consumer application, similar to the above, you will see the counts from both versions of the sensors.
+This is done by querying the state store where these counts are stored by the Kafka Streams application.
+Here is an example of a sample output from the Kafka Streams consumer application.
+
+----
+2018-10-30 19:01:08.700 INFO 61681 --- [ scheduling-1] ication$$EnhancerBySpringCGLIB$$e0950bfd : Count for v1 is=56
+2018-10-30 19:01:08.700 INFO 61681 --- [ scheduling-1] ication$$EnhancerBySpringCGLIB$$e0950bfd : Count for v2 is=57
+2018-10-30 19:01:38.703 INFO 61681 --- [ scheduling-1] ication$$EnhancerBySpringCGLIB$$e0950bfd : Count for v1 is=56
+2018-10-30 19:01:38.703 INFO 61681 --- [ scheduling-1] ication$$EnhancerBySpringCGLIB$$e0950bfd : Count for v2 is=57
+----
+
=== What just happened?
The schema evolved on the `temperature` field. That field is now split into `internalTemperature` and `externalTemperature`,
as two separate fields. The `producer1` produces payload only with `temperature` and on the other hand, `producer2` produces
diff --git a/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/.mvn/jvm.config b/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/.mvn/jvm.config
new file mode 100644
index 0000000..0e7dabe
--- /dev/null
+++ b/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/.mvn/jvm.config
@@ -0,0 +1 @@
+-Xmx1024m -XX:CICompilerCount=1 -XX:TieredStopAtLevel=1 -Djava.security.egd=file:/dev/./urandom
\ No newline at end of file
diff --git a/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/.mvn/maven.config b/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/.mvn/maven.config
new file mode 100644
index 0000000..3b8cf46
--- /dev/null
+++ b/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/.mvn/maven.config
@@ -0,0 +1 @@
+-DaltSnapshotDeploymentRepository=repo.spring.io::default::https://repo.spring.io/libs-snapshot-local -P spring
diff --git a/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/.mvn/wrapper/maven-wrapper.jar b/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/.mvn/wrapper/maven-wrapper.jar
new file mode 100644
index 0000000..5fd4d50
Binary files /dev/null and b/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/.mvn/wrapper/maven-wrapper.jar differ
diff --git a/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/.mvn/wrapper/maven-wrapper.properties b/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/.mvn/wrapper/maven-wrapper.properties
new file mode 100644
index 0000000..eb91947
--- /dev/null
+++ b/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/.mvn/wrapper/maven-wrapper.properties
@@ -0,0 +1 @@
+distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.3.3/apache-maven-3.3.3-bin.zip
\ No newline at end of file
diff --git a/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/mvnw b/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/mvnw
new file mode 100755
index 0000000..6efc7bd
--- /dev/null
+++ b/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/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/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/mvnw.cmd b/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/mvnw.cmd
new file mode 100644
index 0000000..b0dc0e7
--- /dev/null
+++ b/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/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/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/pom.xml b/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/pom.xml
new file mode 100644
index 0000000..8474453
--- /dev/null
+++ b/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/pom.xml
@@ -0,0 +1,64 @@
+
+
+ 4.0.0
+
+ kafka-streams-consumer
+ 0.0.1-SNAPSHOT
+ jar
+ kafka-streams-consumer
+ Schema Registry Consumer
+
+
+ spring.cloud.stream.samples
+ spring-cloud-stream-samples-parent
+ 0.0.1-SNAPSHOT
+ ../../..
+
+
+
+ 1.8.2
+
+
+
+
+ org.springframework.cloud
+ spring-cloud-stream-schema
+
+
+ org.apache.avro
+ avro
+ ${avro.version}
+
+
+ org.springframework.cloud
+ spring-cloud-stream-binder-kafka-streams
+
+
+
+
+
+
+ org.springframework.boot
+ spring-boot-maven-plugin
+
+
+ org.apache.avro
+ avro-maven-plugin
+ ${avro.version}
+
+
+ generate-sources
+
+ schema
+ protocol
+ idl-protocol
+
+
+ src/main/resources/avro
+
+
+
+
+
+
+
diff --git a/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/src/main/java/sample/consumer/CountVersionApplication.java b/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/src/main/java/sample/consumer/CountVersionApplication.java
new file mode 100644
index 0000000..8e9b912
--- /dev/null
+++ b/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/src/main/java/sample/consumer/CountVersionApplication.java
@@ -0,0 +1,86 @@
+package sample.consumer;
+
+import com.example.Sensor;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.kafka.common.serialization.Serdes;
+import org.apache.kafka.streams.KeyValue;
+import org.apache.kafka.streams.kstream.KStream;
+import org.apache.kafka.streams.kstream.Materialized;
+import org.apache.kafka.streams.kstream.Serialized;
+import org.apache.kafka.streams.state.QueryableStoreTypes;
+import org.apache.kafka.streams.state.ReadOnlyKeyValueStore;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cloud.stream.annotation.EnableBinding;
+import org.springframework.cloud.stream.annotation.StreamListener;
+import org.springframework.cloud.stream.binder.kafka.streams.InteractiveQueryService;
+import org.springframework.cloud.stream.binder.kafka.streams.annotations.KafkaStreamsProcessor;
+import org.springframework.cloud.stream.binder.kafka.streams.serde.CompositeNonNativeSerde;
+import org.springframework.cloud.stream.schema.client.EnableSchemaRegistryClient;
+import org.springframework.messaging.handler.annotation.SendTo;
+import org.springframework.scheduling.annotation.EnableScheduling;
+import org.springframework.scheduling.annotation.Scheduled;
+
+import java.util.HashMap;
+import java.util.Map;
+
+@SpringBootApplication
+@EnableBinding(KafkaStreamsProcessor.class)
+@EnableSchemaRegistryClient
+@EnableScheduling
+public class CountVersionApplication {
+
+ private static final String STORE_NAME = "prod-id-count-store";
+ private final Log logger = LogFactory.getLog(getClass());
+
+ ReadOnlyKeyValueStore keyValueStore;
+
+ @Autowired
+ private InteractiveQueryService queryService;
+
+ /**Serde to be used in Kafka Streams operations. This is a custom Serde that uses the same
+ * Avro message converter used by the inbound serialization by the framework. This Serde implmentation
+ * will interact with the Spring Cloud Stream provided Scheam Registry for resolving schema. */
+ @Autowired
+ private CompositeNonNativeSerde customSerde;
+
+ public static void main(String[] args) {
+ SpringApplication.run(CountVersionApplication.class, args);
+ }
+
+ @StreamListener("input")
+ @SendTo("output")
+ public KStream process(KStream input) {
+
+ Map configs = new HashMap<>();
+ configs.put("valueClass", Sensor.class);
+ configs.put("contentType", "application/*+avro");
+ customSerde.configure(configs, false);
+
+ return input
+ .map((key, value) -> {
+
+ String newKey = "v1";
+ if (value.getId().toString().endsWith("v2")) {
+ newKey = "v2";
+ }
+ return new KeyValue<>(newKey, value);
+ })
+ .groupByKey(Serialized.with(Serdes.String(), customSerde))
+ .count(Materialized.as(STORE_NAME))
+ .toStream();
+ }
+
+ @Scheduled(fixedRate = 30000, initialDelay = 5000)
+ public void printVersionCounts() {
+ if (keyValueStore == null) {
+ keyValueStore = queryService.getQueryableStore(STORE_NAME, QueryableStoreTypes.keyValueStore());
+ }
+
+ logger.info("Count for v1 is=" + keyValueStore.get("v1"));
+ logger.info("Count for v2 is=" + keyValueStore.get("v2"));
+ }
+
+}
\ No newline at end of file
diff --git a/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/src/main/resources/application.yml b/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/src/main/resources/application.yml
new file mode 100644
index 0000000..a7da4d7
--- /dev/null
+++ b/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/src/main/resources/application.yml
@@ -0,0 +1,26 @@
+spring:
+ cloud:
+ stream:
+ schema-registry-client:
+ endpoint: http://localhost:8990
+ schema:
+ avro:
+ schema-locations: classpath:avro/sensor.avsc
+server.port: 9998
+
+spring.cloud.stream.kafka.streams.binder.configuration.commit.interval.ms: 1000
+spring.cloud.stream.kafka.streams:
+ binder.configuration:
+ default.key.serde: org.apache.kafka.common.serialization.Serdes$StringSerde
+ default.value.serde: org.apache.kafka.common.serialization.Serdes$StringSerde
+ bindings.output.producer:
+ keySerde: org.apache.kafka.common.serialization.Serdes$StringSerde
+ valueSerde: org.apache.kafka.common.serialization.Serdes$LongSerde
+spring.cloud.stream.bindings.output:
+ destination: sensor-counts
+spring.cloud.stream.bindings.input:
+ destination: sensor-topic
+spring.cloud.stream.kafka.streams.binder:
+ brokers: localhost #192.168.99.100
+
+spring.cloud.stream.kafka.streams.bindings.input.consumer.application-id: schema-reg-vanilla-demo-app
\ No newline at end of file
diff --git a/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/src/main/resources/avro/sensor.avsc b/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/src/main/resources/avro/sensor.avsc
new file mode 100644
index 0000000..95afdfc
--- /dev/null
+++ b/schema-registry-samples/schema-registry-vanilla/kafka-streams-consumer/src/main/resources/avro/sensor.avsc
@@ -0,0 +1,12 @@
+{
+ "namespace" : "com.example",
+ "type" : "record",
+ "name" : "Sensor",
+ "fields" : [
+ {"name":"id","type":"string"},
+ {"name":"internalTemperature", "type":"float", "default":0.0, "aliases":["temperature"]},
+ {"name":"externalTemperature", "type":"float", "default":0.0},
+ {"name":"acceleration", "type":"float","default":0.0},
+ {"name":"velocity","type":"float","default":0.0}
+ ]
+}
\ No newline at end of file
diff --git a/schema-registry-samples/schema-registry-vanilla/pom.xml b/schema-registry-samples/schema-registry-vanilla/pom.xml
index 89bfc9f..611f7a4 100644
--- a/schema-registry-samples/schema-registry-vanilla/pom.xml
+++ b/schema-registry-samples/schema-registry-vanilla/pom.xml
@@ -9,10 +9,11 @@
Schema Registry Vanilla Sample
- schema-registry-vanilla-producer1
- schema-registry-vanilla-producer2
- schema-registry-vanilla-consumer
- schema-registry-vanilla-server
+ producer1
+ producer2
+ consumer
+ registry
+ kafka-streams-consumer