Initial setup

.gitignore

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+.*
+!.gitignore
+build/
+out/

LICENSE

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+MIT License
+
+Copyright (c) {{year}} bakdata
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+[![Build status](https://travis-ci.org/bakdata/common-kafka-streams.svg?branch=master)](https://travis-ci.org/bakdata/common-kafka-streams/)
+[![Sonarcloud status](https://sonarcloud.io/api/project_badges/measure?project=bakdata-common-kafka-streams&metric=alert_status)](https://sonarcloud.io/dashboard?id=bakdata-common-kafka-streams)
+[![Code coverage](https://sonarcloud.io/api/project_badges/measure?project=bakdata-common-kafka-streams&metric=coverage)](https://sonarcloud.io/dashboard?id=bakdata-common-kafka-streams)
+[![Maven](https://img.shields.io/maven-central/v/com.bakdata.common-kafka-streams/common-kafka-streams.svg)](https://search.maven.org/search?q=g:com.bakdata.common-kafka-streams%20AND%20a:common-kafka-streams&core=gav)
+
+
+# common-kafka-streams
+
+Quick intro on what this does.
+
+Optional:
+You can find a [blog post on medium](https://medium.com/bakdata/xxx) with some examples and detailed explanations of how common-kafka-streams works.
+
+## Getting Started
+
+You can add common-kafka-streams via Maven Central.
+
+#### Gradle
+```gradle
+compile group: 'com.bakdata', name: 'common-kafka-streams', version: '1.0.0'
+```
+
+#### Maven
+```xml
+<dependency>
+    <groupId>com.bakdata</groupId>
+    <artifactId>common-kafka-streams</artifactId>
+    <version>1.0.0</version>
+</dependency>
+```
+
+
+For other build tools or versions, refer to the [latest version in MvnRepository](https://mvnrepository.com/artifact/com.bakdata.common-kafka-streams/common-kafka-streams/latest).
+
+### How to use it
+
+Here are X examples that show you how to use common-kafka-streams.
+
+#### Example 1
+
+```java
+class ExampleSnippet {
+}
+```
+
+#### More Examples
+
+You can find many more example in [this repository's XXX code](https://github.com/bakdata/common-kafka-streams/xxx).
+
+
+## Development
+
+If you want to contribute to this project, you can simply clone the repository and build it via Gradle.
+All dependencies should be included in the Gradle files, there are no external prerequisites.
+
+```bash
+> git clone [email protected]:bakdata/common-kafka-streams.git
+> cd common-kafka-streams && ./gradlew build
+```
+
+Please note, that we have [code styles](https://github.com/bakdata/bakdata-code-styles) for Java.
+They are basically the Google style guide, with some small modifications.
+
+## Contributing
+
+We are happy if you want to contribute to this project.
+If you find any bugs or have suggestions for improvements, please open an issue.
+We are also happy to accept your PRs.
+Just open an issue beforehand and let us know what you want to do and why.
+
+## License
+This project is licensed under the MIT license.
+Have a look at the [LICENSE](https://github.com/bakdata/common-kafka-streams/blob/master/LICENSE) for more details.

azure-pipelines.yml

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+trigger:
+  branches:
+    include:
+      - refs/heads/*
+      - refs/tags/*
+pr:
+  branches:
+    include:
+    - master
+
+variables:
+- group: sonarqube
+- group: sign
+- group: ossrh
+
+resources:
+  repositories:
+    - repository: templates
+      type: github
+      name: bakdata/bakdata-project-templates
+      endpoint: bot
+
+jobs:
+- template: azure/gradle/build.yml@templates
+- template: azure/gradle/create_tag_version.yml@templates
+- template: azure/gradle/upload_release.yml@templates
+- template: azure/gradle/upload_snapshot.yml@templates

build.gradle.kts

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+plugins {
+    id("net.researchgate.release") version "2.6.0"
+    id("com.bakdata.sonar") version "1.1.4"
+    id("com.bakdata.sonatype") version "1.1.4"
+    id("org.hildan.github.changelog") version "0.8.0"
+}
+
+allprojects {
+    // TODO: adjust subpackage if needed
+    group = "com.bakdata.${rootProject.name}"
+
+    tasks.withType<Test> {
+        maxParallelForks = 4
+    }
+
+    repositories {
+        mavenCentral()
+    }
+}
+
+configure<com.bakdata.gradle.SonatypeSettings> {
+    developers {
+        // TODO: adjust
+        developer {
+            name.set("Arvid Heise")
+            id.set("AHeise")
+        }
+    }
+}
+
+configure<org.hildan.github.changelog.plugin.GitHubChangelogExtension> {
+    githubUser = "bakdata"
+    futureVersionTag = findProperty("changelog.releaseVersion")?.toString()
+    sinceTag = findProperty("changelog.sinceTag")?.toString()
+}
+
+subprojects {
+    apply(plugin = "java-library")
+
+    configure<JavaPluginConvention> {
+        sourceCompatibility = org.gradle.api.JavaVersion.VERSION_11
+        targetCompatibility = org.gradle.api.JavaVersion.VERSION_11
+    }
+
+    dependencies {
+        "testImplementation"("org.junit.jupiter:junit-jupiter-api:5.3.0")
+        "testRuntimeOnly"("org.junit.jupiter:junit-jupiter-engine:5.3.0")
+        "testImplementation"(group = "org.assertj", name = "assertj-core", version = "3.11.1")
+
+        "compileOnly"("org.projectlombok:lombok:1.18.6")
+        "annotationProcessor"("org.projectlombok:lombok:1.18.6")
+        "testCompileOnly"("org.projectlombok:lombok:1.18.6")
+        "testAnnotationProcessor"("org.projectlombok:lombok:1.18.6")
+    }
+}
+
+configure<org.hildan.github.changelog.plugin.GitHubChangelogExtension> {
+    githubUser = "bakdata"
+    futureVersionTag = findProperty("changelog.releaseVersion")?.toString()
+    sinceTag = findProperty("changelog.sinceTag")?.toString()
+}

gradle.properties

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+version=1.0.0-SNAPSHOT
+org.gradle.caching=true
+org.gradle.parallel=true

gradle/wrapper/gradle-wrapper.properties

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+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.1.1-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

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+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+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"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"