diff --git a/README.adoc b/README.adoc index 5052a93..8f16ac7 100644 --- a/README.adoc +++ b/README.adoc @@ -38,3 +38,5 @@ We generally recommend testing with the http://docs.spring.io/spring-cloud-strea * `transform` is a simple pass through logging transformer (just logs the incoming message and passes it on). +* `kstream` is a collection of applications that demonstrate the capabilities of the Spring Cloud Stream support for Kafka Streams + diff --git a/kstream/kstream-interactive-query/.jdk8 b/kstream/kstream-interactive-query/.jdk8 new file mode 100644 index 0000000..e69de29 diff --git a/kstream/kstream-interactive-query/.mvn/wrapper/maven-wrapper.jar b/kstream/kstream-interactive-query/.mvn/wrapper/maven-wrapper.jar new file mode 100644 index 0000000..9cc84ea Binary files /dev/null and b/kstream/kstream-interactive-query/.mvn/wrapper/maven-wrapper.jar differ diff --git a/kstream/kstream-interactive-query/.mvn/wrapper/maven-wrapper.properties b/kstream/kstream-interactive-query/.mvn/wrapper/maven-wrapper.properties new file mode 100644 index 0000000..c315043 --- /dev/null +++ b/kstream/kstream-interactive-query/.mvn/wrapper/maven-wrapper.properties @@ -0,0 +1 @@ +distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.5.0/apache-maven-3.5.0-bin.zip diff --git a/kstream/kstream-interactive-query/README.adoc b/kstream/kstream-interactive-query/README.adoc new file mode 100644 index 0000000..2a519e3 --- /dev/null +++ b/kstream/kstream-interactive-query/README.adoc @@ -0,0 +1,46 @@ +== What is this app? + +This is an example of a Spring Cloud Stream processor using Kafka Streams support. + +The example is based on a contrived use case of tracking products by interactively querying their status. +The program accepts product ID's and track their counts hitherto by interactively querying the underlying store. \ +This sample uses lambda expressions and thus requires Java 8+. + +==== Starting Kafka in a docker container + +* Skip steps 1-3 if you already have a non-Docker Kafka environment. + +1. Go to the docker directory in this repo and invoke the command `docker-compose up -d`. +2. Ensure that in the docker directory and then invoke the script `start-kafka-shell.sh` +3. cd $KAFKA_HOME +4. Start the console producer: + +Assuming that you are running kafka on a docker container on mac osx. Change the zookeeper IP address accordingly otherwise. + +`bin/kafka-console-producer.sh --broker-list 192.168.99.100:9092 --topic products` + +=== Running the app: + +Go to the root of the repository and do: + +`./mvnw clean package` + +`java -jar target/kstream-interactive-query-0.0.1-SNAPSHOT.jar --kstream.product.tracker.productIds=123,124,125` + +The above command will track products with ID's 123,124 and 125 and print their counts seen so far every 30 seconds. + +* By default we use the docker container IP (mac osx specific) in the `application.yml` for Kafka broker and zookeeper. +Change it in `application.yml` (which requires a rebuild) or pass them as runtime arguments as below. + +`spring.cloud.stream.kstream.binder.brokers=` + +`spring.cloud.stream.kstream.binder.zkNodes=` + +Enter the following in the console producer (one line at a time) and watch the output on the console (or IDE) where the application is running. + +``` +{"id":"123"} +{"id":"124"} +{"id":"125"} +{"id":"123"} +{"id":"123"} +{"id":"123"} +``` + diff --git a/kstream/kstream-interactive-query/docker/docker-compose.yml b/kstream/kstream-interactive-query/docker/docker-compose.yml new file mode 100644 index 0000000..ecf41fb --- /dev/null +++ b/kstream/kstream-interactive-query/docker/docker-compose.yml @@ -0,0 +1,14 @@ +version: '2' +services: + zookeeper: + image: wurstmeister/zookeeper + ports: + - "2181:2181" + kafka: + image: wurstmeister/kafka + ports: + - "9092:9092" + environment: + KAFKA_ADVERTISED_HOST_NAME: 192.168.99.100 + KAFKA_ADVERTISED_PORT: 9092 + KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181 diff --git a/kstream/kstream-interactive-query/docker/start-kafka-shell.sh b/kstream/kstream-interactive-query/docker/start-kafka-shell.sh new file mode 100755 index 0000000..62663e4 --- /dev/null +++ b/kstream/kstream-interactive-query/docker/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=$2 -i -t wurstmeister/kafka /bin/bash diff --git a/kstream/kstream-interactive-query/mvnw b/kstream/kstream-interactive-query/mvnw new file mode 100755 index 0000000..5bf251c --- /dev/null +++ b/kstream/kstream-interactive-query/mvnw @@ -0,0 +1,225 @@ +#!/bin/sh +# ---------------------------------------------------------------------------- +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, +# software distributed under the License is distributed on an +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +# KIND, either express or implied. See the License for the +# specific language governing permissions and limitations +# under the License. +# ---------------------------------------------------------------------------- + +# ---------------------------------------------------------------------------- +# Maven2 Start Up Batch script +# +# Required ENV vars: +# ------------------ +# JAVA_HOME - location of a JDK home dir +# +# Optional ENV vars +# ----------------- +# M2_HOME - location of maven2's installed home dir +# MAVEN_OPTS - parameters passed to the Java VM when running Maven +# e.g. to debug Maven itself, use +# set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000 +# MAVEN_SKIP_RC - flag to disable loading of mavenrc files +# ---------------------------------------------------------------------------- + +if [ -z "$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 "$MAVEN_PROJECTBASEDIR"` +fi + +WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain + +exec "$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/kstream/kstream-interactive-query/pom.xml b/kstream/kstream-interactive-query/pom.xml new file mode 100644 index 0000000..36c1346 --- /dev/null +++ b/kstream/kstream-interactive-query/pom.xml @@ -0,0 +1,53 @@ + + + 4.0.0 + + kstream.product.tracker + kstream-interactive-query + 0.0.1-SNAPSHOT + jar + + kstream-interactive-query + Spring Cloud Stream sample for KStream interactive queries + + + org.springframework.cloud + spring-cloud-stream-sample-kstream-parent + 1.2.0.BUILD-SNAPSHOT + + + + UTF-8 + UTF-8 + 1.8 + + + + + org.springframework.cloud + spring-cloud-stream-binder-kstream + + + + + + + org.springframework.boot + spring-boot-maven-plugin + + + + + + + spring-milestones + Spring Milestones + http://repo.spring.io/libs-milestone-local + + false + + + + + diff --git a/kstream/kstream-interactive-query/src/main/java/kstream/word/count/kstreamwordcount/KStreamInteractiveQueryApplication.java b/kstream/kstream-interactive-query/src/main/java/kstream/word/count/kstreamwordcount/KStreamInteractiveQueryApplication.java new file mode 100644 index 0000000..ee92bad --- /dev/null +++ b/kstream/kstream-interactive-query/src/main/java/kstream/word/count/kstreamwordcount/KStreamInteractiveQueryApplication.java @@ -0,0 +1,127 @@ +/* + * Copyright 2017 the original author or 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 + * + * 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. + */ + +package kstream.word.count.kstreamwordcount; + +import java.util.Set; +import java.util.stream.Collectors; + +import org.apache.kafka.common.serialization.Serdes; +import org.apache.kafka.streams.KafkaStreams; +import org.apache.kafka.streams.KeyValue; +import org.apache.kafka.streams.kstream.KStream; +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.EnableAutoConfiguration; +import org.springframework.boot.autoconfigure.SpringBootApplication; +import org.springframework.boot.context.properties.ConfigurationProperties; +import org.springframework.boot.context.properties.EnableConfigurationProperties; +import org.springframework.cloud.stream.annotation.EnableBinding; +import org.springframework.cloud.stream.annotation.StreamListener; +import org.springframework.cloud.stream.binder.kstream.annotations.KStreamProcessor; +import org.springframework.kafka.core.KStreamBuilderFactoryBean; +import org.springframework.kafka.support.serializer.JsonSerde; +import org.springframework.messaging.handler.annotation.SendTo; +import org.springframework.scheduling.annotation.EnableScheduling; +import org.springframework.scheduling.annotation.Scheduled; +import org.springframework.util.StringUtils; + +@SpringBootApplication +public class KStreamInteractiveQueryApplication { + + public static void main(String[] args) { + SpringApplication.run(KStreamInteractiveQueryApplication.class, args); + } + + @EnableBinding(KStreamProcessor.class) + @EnableAutoConfiguration + @EnableConfigurationProperties(ProductTrackerProperties.class) + @EnableScheduling + public static class InteractiveProductCountApplication { + + private static final String STORE_NAME = "prod-id-count-store"; + + @Autowired + private KStreamBuilderFactoryBean kStreamBuilderFactoryBean; + + @Autowired + ProductTrackerProperties productTrackerProperties; + + ReadOnlyKeyValueStore keyValueStore; + + @StreamListener("input") + @SendTo("output") + public KStream process(KStream input) { + + return input + .filter((key, product) -> productIds().contains(product.getId())) + .map((key, value) -> new KeyValue<>(value.id, value)) + .groupByKey(new Serdes.IntegerSerde(), new JsonSerde<>(Product.class)) + .count(STORE_NAME) + .toStream(); + } + + private Set productIds() { + return StringUtils.commaDelimitedListToSet(productTrackerProperties.getProductIds()) + .stream().map(Integer::parseInt).collect(Collectors.toSet()); + } + + + @Scheduled(fixedRate = 30000, initialDelay = 5000) + public void printProductCounts() { + if (keyValueStore == null) { + KafkaStreams streams = kStreamBuilderFactoryBean.getKafkaStreams(); + keyValueStore = streams.store(STORE_NAME, QueryableStoreTypes.keyValueStore()); + } + + for (Integer id : productIds()) { + System.out.println("Product ID: " + id + " Count: " + keyValueStore.get(id)); + } + } + + } + + @ConfigurationProperties(prefix = "kstream.product.tracker") + static class ProductTrackerProperties { + + private String productIds; + + public String getProductIds() { + return productIds; + } + + public void setProductIds(String productIds) { + this.productIds = productIds; + } + + } + + static class Product { + + Integer id; + + public Integer getId() { + return id; + } + + public void setId(Integer id) { + this.id = id; + } + } +} diff --git a/kstream/kstream-interactive-query/src/main/resources/application.yml b/kstream/kstream-interactive-query/src/main/resources/application.yml new file mode 100644 index 0000000..0fe6361 --- /dev/null +++ b/kstream/kstream-interactive-query/src/main/resources/application.yml @@ -0,0 +1,21 @@ +spring.cloud.stream.bindings.output.contentType: application/json +spring.cloud.stream.kstream.binder.configuration.commit.interval.ms: 1000 +spring.cloud.stream.kstream: + binder.configuration: + key.serde: org.apache.kafka.common.serialization.Serdes$StringSerde + value.serde: org.apache.kafka.common.serialization.Serdes$StringSerde + bindings.output.producer: + keySerde: org.apache.kafka.common.serialization.Serdes$IntegerSerde + valueSerde: org.apache.kafka.common.serialization.Serdes$StringSerde +spring.cloud.stream.bindings.output: + destination: product-counts + producer: + headerMode: raw + useNativeEncoding: true +spring.cloud.stream.bindings.input: + destination: products + consumer: + headerMode: raw +spring.cloud.stream.kstream.binder: + brokers: 192.168.99.100 + zkNodes: 192.168.99.100 \ No newline at end of file diff --git a/kstream/kstream-interactive-query/src/main/resources/logback.xml b/kstream/kstream-interactive-query/src/main/resources/logback.xml new file mode 100644 index 0000000..870ac9e --- /dev/null +++ b/kstream/kstream-interactive-query/src/main/resources/logback.xml @@ -0,0 +1,12 @@ + + + + + %d{ISO8601} %5p %t %c{2}:%L - %m%n + + + + + + + \ No newline at end of file diff --git a/kstream/kstream-product-tracker/.jdk8 b/kstream/kstream-product-tracker/.jdk8 new file mode 100644 index 0000000..e69de29 diff --git a/kstream/kstream-product-tracker/.mvn/wrapper/maven-wrapper.jar b/kstream/kstream-product-tracker/.mvn/wrapper/maven-wrapper.jar new file mode 100644 index 0000000..9cc84ea Binary files /dev/null and b/kstream/kstream-product-tracker/.mvn/wrapper/maven-wrapper.jar differ diff --git a/kstream/kstream-product-tracker/.mvn/wrapper/maven-wrapper.properties b/kstream/kstream-product-tracker/.mvn/wrapper/maven-wrapper.properties new file mode 100644 index 0000000..c315043 --- /dev/null +++ b/kstream/kstream-product-tracker/.mvn/wrapper/maven-wrapper.properties @@ -0,0 +1 @@ +distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.5.0/apache-maven-3.5.0-bin.zip diff --git a/kstream/kstream-product-tracker/README.adoc b/kstream/kstream-product-tracker/README.adoc new file mode 100644 index 0000000..f2cf4cd --- /dev/null +++ b/kstream/kstream-product-tracker/README.adoc @@ -0,0 +1,58 @@ +== What is this app? + +This is an example of a Spring Cloud Stream processor using Kafka Streams support. + +The example is based on a contrived use case of tracking products. +Although contrived, this type of use cases are pretty common in the industry where some organizations want to track the statistics of some entities over a time window. +In essence, the application receives product information from input topic and count the interested products in a configurable time window and report that in an output topic. +This sample uses lambda expressions and thus requires Java 8+. + +==== Starting Kafka in a docker container + +* Skip steps 1-3 if you already have a non-Docker Kafka environment. + +1. Go to the docker directory in this repo and invoke the command `docker-compose up -d`. +2. Ensure that in the docker directory and then invoke the script `start-kafka-shell.sh` +3. cd $KAFKA_HOME +4. Start the console producer: + +Assuming that you are running kafka on a docker container on mac osx. Change the zookeeper IP address accordingly otherwise. + +`bin/kafka-console-producer.sh --broker-list 192.168.99.100:9092 --topic products` +5. Start the console consumer: + +Assuming that you are running kafka on a docker container on mac osx. Change the zookeeper IP address accordingly otherwise. + +`bin/kafka-console-consumer.sh --bootstrap-server 192.168.99.100:9092 --key-deserializer org.apache.kafka.common.serialization.IntegerDeserializer --property print.key=true --topic product-counts` + +=== Running the app: + +Go to the root of the repository and do: + +`./mvnw clean package` + +`java -jar target/kstream-product-tracker-0.0.1-SNAPSHOT.jar --kstream.product.tracker.productIds=123,124,125 --spring.cloud.stream.kstream.timeWindow.length=60000 --spring.cloud.stream.kstream.timeWindow.advanceBy=30000 --spring.cloud.stream.bindings.input.destination=products` + +The above command will track products with ID's 123,124 and 125 every 30 seconds with the counts from the last minute. +In other words, every 30 seconds a new 1 minute window is started. + + +* By default we use the docker container IP (mac osx specific) in the `application.yml` for Kafka broker and zookeeper. +Change it in `application.yml` (which requires a rebuild) or pass them as runtime arguments as below. + +`spring.cloud.stream.kstream.binder.brokers=` + +`spring.cloud.stream.kstream.binder.zkNodes=` + +Enter the following in the console producer (one line at a time) and watch the output on the console consumer: + +``` +{"id":"123"} +{"id":"124"} +{"id":"125"} +{"id":"123"} +{"id":"123"} +{"id":"123"} +``` + +The default time window is configured for 30 seconds and you can change that using the following property. + +`kstream.word.count.windowLength` (value is expressed in milliseconds) + +In order to switch to a hopping window, you can use the `kstream.word.count.advanceBy` (value in milliseconds). +This will create an overlapped hopping windows depending on the value you provide. diff --git a/kstream/kstream-product-tracker/docker/docker-compose.yml b/kstream/kstream-product-tracker/docker/docker-compose.yml new file mode 100644 index 0000000..ecf41fb --- /dev/null +++ b/kstream/kstream-product-tracker/docker/docker-compose.yml @@ -0,0 +1,14 @@ +version: '2' +services: + zookeeper: + image: wurstmeister/zookeeper + ports: + - "2181:2181" + kafka: + image: wurstmeister/kafka + ports: + - "9092:9092" + environment: + KAFKA_ADVERTISED_HOST_NAME: 192.168.99.100 + KAFKA_ADVERTISED_PORT: 9092 + KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181 diff --git a/kstream/kstream-product-tracker/docker/start-kafka-shell.sh b/kstream/kstream-product-tracker/docker/start-kafka-shell.sh new file mode 100755 index 0000000..62663e4 --- /dev/null +++ b/kstream/kstream-product-tracker/docker/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=$2 -i -t wurstmeister/kafka /bin/bash diff --git a/kstream/kstream-product-tracker/mvnw b/kstream/kstream-product-tracker/mvnw new file mode 100755 index 0000000..5bf251c --- /dev/null +++ b/kstream/kstream-product-tracker/mvnw @@ -0,0 +1,225 @@ +#!/bin/sh +# ---------------------------------------------------------------------------- +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, +# software distributed under the License is distributed on an +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +# KIND, either express or implied. See the License for the +# specific language governing permissions and limitations +# under the License. +# ---------------------------------------------------------------------------- + +# ---------------------------------------------------------------------------- +# Maven2 Start Up Batch script +# +# Required ENV vars: +# ------------------ +# JAVA_HOME - location of a JDK home dir +# +# Optional ENV vars +# ----------------- +# M2_HOME - location of maven2's installed home dir +# MAVEN_OPTS - parameters passed to the Java VM when running Maven +# e.g. to debug Maven itself, use +# set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000 +# MAVEN_SKIP_RC - flag to disable loading of mavenrc files +# ---------------------------------------------------------------------------- + +if [ -z "$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 "$MAVEN_PROJECTBASEDIR"` +fi + +WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain + +exec "$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/kstream/kstream-product-tracker/pom.xml b/kstream/kstream-product-tracker/pom.xml new file mode 100644 index 0000000..37f3241 --- /dev/null +++ b/kstream/kstream-product-tracker/pom.xml @@ -0,0 +1,53 @@ + + + 4.0.0 + + kstream.product.tracker + kstream-product-tracker + 0.0.1-SNAPSHOT + jar + + kstream-product-tracker + Demo project for Spring Boot + + + org.springframework.cloud + spring-cloud-stream-sample-kstream-parent + 1.2.0.BUILD-SNAPSHOT + + + + UTF-8 + UTF-8 + 1.8 + + + + + org.springframework.cloud + spring-cloud-stream-binder-kstream + + + + + + + org.springframework.boot + spring-boot-maven-plugin + + + + + + + spring-milestones + Spring Milestones + http://repo.spring.io/libs-milestone-local + + false + + + + + diff --git a/kstream/kstream-product-tracker/src/main/java/kstream/word/count/kstreamwordcount/KStreamProductTrackerApplication.java b/kstream/kstream-product-tracker/src/main/java/kstream/word/count/kstreamwordcount/KStreamProductTrackerApplication.java new file mode 100644 index 0000000..9784a03 --- /dev/null +++ b/kstream/kstream-product-tracker/src/main/java/kstream/word/count/kstreamwordcount/KStreamProductTrackerApplication.java @@ -0,0 +1,155 @@ +/* + * Copyright 2017 the original author or 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 + * + * 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. + */ + +package kstream.word.count.kstreamwordcount; + +import java.time.Instant; +import java.time.LocalTime; +import java.time.ZoneId; +import java.util.Set; +import java.util.stream.Collectors; + +import org.apache.kafka.streams.KeyValue; +import org.apache.kafka.streams.kstream.KStream; +import org.apache.kafka.streams.kstream.TimeWindows; + +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.EnableAutoConfiguration; +import org.springframework.boot.autoconfigure.SpringBootApplication; +import org.springframework.boot.context.properties.ConfigurationProperties; +import org.springframework.boot.context.properties.EnableConfigurationProperties; +import org.springframework.cloud.stream.annotation.EnableBinding; +import org.springframework.cloud.stream.annotation.StreamListener; +import org.springframework.cloud.stream.binder.kstream.annotations.KStreamProcessor; +import org.springframework.kafka.support.serializer.JsonSerde; +import org.springframework.messaging.handler.annotation.SendTo; +import org.springframework.util.StringUtils; + +@SpringBootApplication +public class KStreamProductTrackerApplication { + + public static void main(String[] args) { + SpringApplication.run(KStreamProductTrackerApplication.class, args); + } + + @EnableBinding(KStreamProcessor.class) + @EnableAutoConfiguration + @EnableConfigurationProperties(ProductTrackerProperties.class) + public static class ProductCountApplication { + + @Autowired + ProductTrackerProperties productTrackerProperties; + + @Autowired + TimeWindows timeWindows; + + @StreamListener("input") + @SendTo("output") + public KStream process(KStream input) { + return input + .filter((key, product) -> productIds().contains(product.getId())) + .map((key, value) -> new KeyValue<>(value, value)) + .groupByKey(new JsonSerde<>(Product.class), new JsonSerde<>(Product.class)) + .count(timeWindows, "product-counts") + .toStream() + .map((key, value) -> new KeyValue<>(key.key().id, new ProductStatus(key.key().id, + value, Instant.ofEpochMilli(key.window().start()).atZone(ZoneId.systemDefault()).toLocalTime(), + Instant.ofEpochMilli(key.window().end()).atZone(ZoneId.systemDefault()).toLocalTime()))); + } + + private Set productIds() { + return StringUtils.commaDelimitedListToSet(productTrackerProperties.getProductIds()) + .stream().map(Integer::parseInt).collect(Collectors.toSet()); + } + + } + + @ConfigurationProperties(prefix = "kstream.product.tracker") + static class ProductTrackerProperties { + + private String productIds; + + public String getProductIds() { + return productIds; + } + + public void setProductIds(String productIds) { + this.productIds = productIds; + } + + } + + static class Product { + + Integer id; + + public Integer getId() { + return id; + } + + public void setId(Integer id) { + this.id = id; + } + } + + static class ProductStatus { + private Integer id; + private long count; + private LocalTime windowStart; + private LocalTime windowEnd; + + public ProductStatus(Integer id, long count, LocalTime windowStart, LocalTime windowEnd) { + this.id = id; + this.count = count; + this.windowStart = windowStart; + this.windowEnd = windowEnd; + } + + public Integer getId() { + return id; + } + + public void setId(Integer id) { + this.id = id; + } + + public long getCount() { + return count; + } + + public void setCount(long count) { + this.count = count; + } + + public LocalTime getWindowStart() { + return windowStart; + } + + public void setWindowStart(LocalTime windowStart) { + this.windowStart = windowStart; + } + + public LocalTime getWindowEnd() { + return windowEnd; + } + + public void setWindowEnd(LocalTime windowEnd) { + this.windowEnd = windowEnd; + } + } + +} diff --git a/kstream/kstream-product-tracker/src/main/resources/application.yml b/kstream/kstream-product-tracker/src/main/resources/application.yml new file mode 100644 index 0000000..5e37c8f --- /dev/null +++ b/kstream/kstream-product-tracker/src/main/resources/application.yml @@ -0,0 +1,20 @@ +spring.cloud.stream.bindings.output.contentType: application/json +spring.cloud.stream.kstream.binder.configuration.commit.interval.ms: 1000 +spring.cloud.stream.kstream: + binder.configuration: + key.serde: org.apache.kafka.common.serialization.Serdes$StringSerde + value.serde: org.apache.kafka.common.serialization.Serdes$StringSerde + bindings.output.producer: + keySerde: org.apache.kafka.common.serialization.Serdes$IntegerSerde +spring.cloud.stream.bindings.output: + destination: product-counts + producer: + headerMode: raw + useNativeEncoding: true +spring.cloud.stream.bindings.input: + destination: products + consumer: + headerMode: raw +spring.cloud.stream.kstream.binder: + brokers: 192.168.99.100 + zkNodes: 192.168.99.100 \ No newline at end of file diff --git a/kstream/kstream-product-tracker/src/main/resources/logback.xml b/kstream/kstream-product-tracker/src/main/resources/logback.xml new file mode 100644 index 0000000..870ac9e --- /dev/null +++ b/kstream/kstream-product-tracker/src/main/resources/logback.xml @@ -0,0 +1,12 @@ + + + + + %d{ISO8601} %5p %t %c{2}:%L - %m%n + + + + + + + \ No newline at end of file diff --git a/kstream/kstream-word-count/.gitignore b/kstream/kstream-word-count/.gitignore new file mode 100644 index 0000000..2af7cef --- /dev/null +++ b/kstream/kstream-word-count/.gitignore @@ -0,0 +1,24 @@ +target/ +!.mvn/wrapper/maven-wrapper.jar + +### STS ### +.apt_generated +.classpath +.factorypath +.project +.settings +.springBeans + +### IntelliJ IDEA ### +.idea +*.iws +*.iml +*.ipr + +### NetBeans ### +nbproject/private/ +build/ +nbbuild/ +dist/ +nbdist/ +.nb-gradle/ \ No newline at end of file diff --git a/kstream/kstream-word-count/.jdk8 b/kstream/kstream-word-count/.jdk8 new file mode 100644 index 0000000..e69de29 diff --git a/kstream/kstream-word-count/.mvn/wrapper/maven-wrapper.jar b/kstream/kstream-word-count/.mvn/wrapper/maven-wrapper.jar new file mode 100644 index 0000000..9cc84ea Binary files /dev/null and b/kstream/kstream-word-count/.mvn/wrapper/maven-wrapper.jar differ diff --git a/kstream/kstream-word-count/.mvn/wrapper/maven-wrapper.properties b/kstream/kstream-word-count/.mvn/wrapper/maven-wrapper.properties new file mode 100644 index 0000000..c315043 --- /dev/null +++ b/kstream/kstream-word-count/.mvn/wrapper/maven-wrapper.properties @@ -0,0 +1 @@ +distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.5.0/apache-maven-3.5.0-bin.zip diff --git a/kstream/kstream-word-count/README.adoc b/kstream/kstream-word-count/README.adoc new file mode 100644 index 0000000..c4b38d7 --- /dev/null +++ b/kstream/kstream-word-count/README.adoc @@ -0,0 +1,43 @@ +== What is this app? + +This is an example of a Spring Cloud Stream processor using Kafka Streams support. + +The example is based on the word count application from the https://github.com/confluentinc/examples/blob/3.2.x/kafka-streams/src/main/java/io/confluent/examples/streams/WordCountLambdaExample.java[reference documentation]. +It uses a single input and a single output. +In essence, the application receives text messages from an input topic and computes word occurrence counts in a configurable time window and report that in an output topic. +This sample uses lambda expressions and thus requires Java 8+. + +==== Starting Kafka in a docker container + +* Skip steps 1-3 if you already have a non-Docker Kafka environment. + +1. Go to the docker directory in this repo and invoke the command `docker-compose up -d`. +2. Ensure that in the docker directory and then invoke the script `start-kafka-shell.sh` +3. cd $KAFKA_HOME +4. Start the console producer: + +Assuming that you are running kafka on a docker container on mac osx. Change the zookeeper IP address accordingly otherwise. + +`bin/kafka-console-producer.sh --broker-list 192.168.99.100:9092 --topic words` +5. Start the console consumer: + +Assuming that you are running kafka on a docker container on mac osx. Change the zookeeper IP address accordingly otherwise. + +`bin/kafka-console-consumer.sh --bootstrap-server 192.168.99.100:9092 --topic counts` + +=== Running the app: + +Go to the root of the repository and do: `./mvnw clean package` + +`java -jar target/kstream-word-count-0.0.1-SNAPSHOT.jar --spring.cloud.stream.kstream.timeWindow.length=5000` + +* By default we use the docker container IP (mac osx specific) in the `application.yml` for Kafka broker and zookeeper. +Change it in `application.yml` (which requires a rebuild) or pass them as runtime arguments as below. + +`spring.cloud.stream.kstream.binder.brokers=` + +`spring.cloud.stream.kstream.binder.zkNodes=` + +Enter some text in the console producer and watch the output in the console consumer. + +In order to switch to a hopping window, you can use the `spring.cloud.stream.kstream.timeWindow.advanceBy` (value in milliseconds). +This will create an overlapped hopping windows depending on the value you provide. + +Here is an example with 2 overlapping windows (window length of 10 seconds and a hop (advance) by 5 seconds: + +`java -jar target/kstream-word-count-0.0.1-SNAPSHOT.jar --spring.cloud.stream.kstream.timeWindow.length=10000 --spring.cloud.stream.kstream.timeWindow.advanceBy=5000` \ No newline at end of file diff --git a/kstream/kstream-word-count/docker/docker-compose.yml b/kstream/kstream-word-count/docker/docker-compose.yml new file mode 100644 index 0000000..ecf41fb --- /dev/null +++ b/kstream/kstream-word-count/docker/docker-compose.yml @@ -0,0 +1,14 @@ +version: '2' +services: + zookeeper: + image: wurstmeister/zookeeper + ports: + - "2181:2181" + kafka: + image: wurstmeister/kafka + ports: + - "9092:9092" + environment: + KAFKA_ADVERTISED_HOST_NAME: 192.168.99.100 + KAFKA_ADVERTISED_PORT: 9092 + KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181 diff --git a/kstream/kstream-word-count/docker/start-kafka-shell.sh b/kstream/kstream-word-count/docker/start-kafka-shell.sh new file mode 100755 index 0000000..62663e4 --- /dev/null +++ b/kstream/kstream-word-count/docker/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=$2 -i -t wurstmeister/kafka /bin/bash diff --git a/kstream/kstream-word-count/mvnw b/kstream/kstream-word-count/mvnw new file mode 100755 index 0000000..5bf251c --- /dev/null +++ b/kstream/kstream-word-count/mvnw @@ -0,0 +1,225 @@ +#!/bin/sh +# ---------------------------------------------------------------------------- +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, +# software distributed under the License is distributed on an +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +# KIND, either express or implied. See the License for the +# specific language governing permissions and limitations +# under the License. +# ---------------------------------------------------------------------------- + +# ---------------------------------------------------------------------------- +# Maven2 Start Up Batch script +# +# Required ENV vars: +# ------------------ +# JAVA_HOME - location of a JDK home dir +# +# Optional ENV vars +# ----------------- +# M2_HOME - location of maven2's installed home dir +# MAVEN_OPTS - parameters passed to the Java VM when running Maven +# e.g. to debug Maven itself, use +# set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000 +# MAVEN_SKIP_RC - flag to disable loading of mavenrc files +# ---------------------------------------------------------------------------- + +if [ -z "$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 "$MAVEN_PROJECTBASEDIR"` +fi + +WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain + +exec "$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/kstream/kstream-word-count/mvnw.cmd b/kstream/kstream-word-count/mvnw.cmd new file mode 100644 index 0000000..019bd74 --- /dev/null +++ b/kstream/kstream-word-count/mvnw.cmd @@ -0,0 +1,143 @@ +@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 + +@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="%MAVEN_PROJECTBASEDIR%\.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_CONFIG% %* +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/kstream/kstream-word-count/pom.xml b/kstream/kstream-word-count/pom.xml new file mode 100644 index 0000000..319bef6 --- /dev/null +++ b/kstream/kstream-word-count/pom.xml @@ -0,0 +1,53 @@ + + + 4.0.0 + + kstream.word.count + kstream-word-count + 0.0.1-SNAPSHOT + jar + + kstream-word-count + Demo project for Spring Boot + + + org.springframework.cloud + spring-cloud-stream-sample-kstream-parent + 1.2.0.BUILD-SNAPSHOT + + + + UTF-8 + UTF-8 + 1.8 + + + + + org.springframework.cloud + spring-cloud-stream-binder-kstream + + + + + + + org.springframework.boot + spring-boot-maven-plugin + + + + + + + spring-milestones + Spring Milestones + http://repo.spring.io/libs-milestone-local + + false + + + + + diff --git a/kstream/kstream-word-count/src/main/java/kstream/word/count/kstreamwordcount/KStreamWordCountApplication.java b/kstream/kstream-word-count/src/main/java/kstream/word/count/kstreamwordcount/KStreamWordCountApplication.java new file mode 100644 index 0000000..8ed098a --- /dev/null +++ b/kstream/kstream-word-count/src/main/java/kstream/word/count/kstreamwordcount/KStreamWordCountApplication.java @@ -0,0 +1,114 @@ +/* + * Copyright 2017 the original author or 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 + * + * 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. + */ + +package kstream.word.count.kstreamwordcount; + +import java.util.Arrays; +import java.util.Date; + +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.TimeWindows; + +import org.springframework.beans.factory.annotation.Autowired; +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.EnableAutoConfiguration; +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.kstream.annotations.KStreamProcessor; +import org.springframework.messaging.handler.annotation.SendTo; + +@SpringBootApplication +public class KStreamWordCountApplication { + + public static void main(String[] args) { + SpringApplication.run(KStreamWordCountApplication.class, args); + } + + @EnableBinding(KStreamProcessor.class) + @EnableAutoConfiguration + public static class WordCountProcessorApplication { + + @Autowired + private TimeWindows timeWindows; + + @StreamListener("input") + @SendTo("output") + public KStream process(KStream input) { + + return input + .flatMapValues(value -> Arrays.asList(value.toLowerCase().split("\\W+"))) + .map((key, value) -> new KeyValue<>(value, value)) + .groupByKey(Serdes.String(), Serdes.String()) + .count(timeWindows, "WordCounts") + .toStream() + .map((key, value) -> new KeyValue<>(null, new WordCount(key.key(), value, new Date(key.window().start()), new Date(key.window().end())))); + } + + } + + static class WordCount { + + private String word; + + private long count; + + private Date start; + + private Date end; + + WordCount(String word, long count, Date start, Date end) { + this.word = word; + this.count = count; + this.start = start; + this.end = end; + } + + public String getWord() { + return word; + } + + public void setWord(String word) { + this.word = word; + } + + public long getCount() { + return count; + } + + public void setCount(long count) { + this.count = count; + } + + public Date getStart() { + return start; + } + + public void setStart(Date start) { + this.start = start; + } + + public Date getEnd() { + return end; + } + + public void setEnd(Date end) { + this.end = end; + } + } +} diff --git a/kstream/kstream-word-count/src/main/resources/application.yml b/kstream/kstream-word-count/src/main/resources/application.yml new file mode 100644 index 0000000..0688d67 --- /dev/null +++ b/kstream/kstream-word-count/src/main/resources/application.yml @@ -0,0 +1,17 @@ +spring.cloud.stream.bindings.output.contentType: application/json +spring.cloud.stream.kstream.binder.configuration.commit.interval.ms: 1000 +spring.cloud.stream.kstream.binder.configuration: + key.serde: org.apache.kafka.common.serialization.Serdes$StringSerde + value.serde: org.apache.kafka.common.serialization.Serdes$StringSerde +spring.cloud.stream.bindings.output: + destination: counts + producer: + headerMode: raw + useNativeEncoding: true +spring.cloud.stream.bindings.input: + destination: words + consumer: + headerMode: raw +spring.cloud.stream.kstream.binder: + brokers: 192.168.99.100 + zkNodes: 192.168.99.100 \ No newline at end of file diff --git a/kstream/kstream-word-count/src/main/resources/logback.xml b/kstream/kstream-word-count/src/main/resources/logback.xml new file mode 100644 index 0000000..870ac9e --- /dev/null +++ b/kstream/kstream-word-count/src/main/resources/logback.xml @@ -0,0 +1,12 @@ + + + + + %d{ISO8601} %5p %t %c{2}:%L - %m%n + + + + + + + \ No newline at end of file diff --git a/kstream/pom.xml b/kstream/pom.xml new file mode 100644 index 0000000..ccbc734 --- /dev/null +++ b/kstream/pom.xml @@ -0,0 +1,22 @@ + + + 4.0.0 + + spring-cloud-stream-sample-kstream-parent + pom + + spring-cloud-stream-sample-kstream-parent + Parent Project for KStream Samples + + + org.springframework.cloud + spring-cloud-stream-samples + 1.2.0.BUILD-SNAPSHOT + + + + kstream-word-count + kstream-product-tracker + kstream-interactive-query + + diff --git a/pom.xml b/pom.xml index d607c5a..d8032b3 100644 --- a/pom.xml +++ b/pom.xml @@ -1,7 +1,6 @@ 4.0.0 - org.springframework.cloud spring-cloud-stream-samples 1.2.0.BUILD-SNAPSHOT pom @@ -13,11 +12,11 @@ org.springframework.cloud spring-cloud-build - 1.3.3.RELEASE + 1.3.5.RELEASE UTF-8 - Chelsea.BUILD-SNAPSHOT + Ditmars.BUILD-SNAPSHOT 1.8 @@ -35,6 +34,7 @@ reactive-processor-kafka test-embedded-kafka kinesis-produce-consume + kstream