[FLINK-21243] Add a Maven module for Java SDK
This closes #197.
diff --git a/pom.xml b/pom.xml
index 4a73714..ac3a28a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -52,6 +52,7 @@
<modules>
<module>statefun-sdk</module>
<module>statefun-sdk-protos</module>
+ <module>statefun-sdk-java</module>
<module>statefun-kafka-io</module>
<module>statefun-kinesis-io</module>
<module>statefun-examples</module>
diff --git a/statefun-sdk-java/pom.xml b/statefun-sdk-java/pom.xml
new file mode 100644
index 0000000..62bb8de
--- /dev/null
+++ b/statefun-sdk-java/pom.xml
@@ -0,0 +1,148 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+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.
+-->
+<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xmlns="http://maven.apache.org/POM/4.0.0"
+ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+ <parent>
+ <artifactId>statefun-parent</artifactId>
+ <groupId>org.apache.flink</groupId>
+ <version>2.3-SNAPSHOT</version>
+ </parent>
+ <modelVersion>4.0.0</modelVersion>
+
+ <artifactId>statefun-sdk-java</artifactId>
+
+ <properties>
+ <additional-sources.dir>target/additional-sources</additional-sources.dir>
+ </properties>
+
+ <dependencies>
+ <dependency>
+ <groupId>org.apache.flink</groupId>
+ <artifactId>statefun-sdk-protos</artifactId>
+ <version>${project.version}</version>
+ </dependency>
+ <dependency>
+ <groupId>com.google.protobuf</groupId>
+ <artifactId>protobuf-java</artifactId>
+ <version>${protobuf.version}</version>
+ </dependency>
+ </dependencies>
+
+ <build>
+ <plugins>
+ <!--
+ The following plugin is executed in the generated-sources phase,
+ and is responsible to extract the additional *.proto files located
+ at statefun-sdk-protos.jar.
+ -->
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-dependency-plugin</artifactId>
+ <executions>
+ <execution>
+ <id>unpack</id>
+ <phase>generate-sources</phase>
+ <goals>
+ <goal>unpack</goal>
+ </goals>
+ <configuration>
+ <artifactItems>
+ <artifactItem>
+ <groupId>org.apache.flink</groupId>
+ <artifactId>statefun-sdk-protos</artifactId>
+ <version>${project.version}</version>
+ <type>jar</type>
+ <outputDirectory>${additional-sources.dir}</outputDirectory>
+ <includes>sdk/*.proto,types/*.proto,io/*.proto</includes>
+ </artifactItem>
+ </artifactItems>
+ </configuration>
+ </execution>
+ </executions>
+ </plugin>
+ <!--
+ The following plugin invokes protoc to generate Java classes out of the *.proto
+ definitions located at: (1) src/main/protobuf (2) ${additional-sources.dir}.
+ -->
+ <plugin>
+ <groupId>com.github.os72</groupId>
+ <artifactId>protoc-jar-maven-plugin</artifactId>
+ <version>${protoc-jar-maven-plugin.version}</version>
+ <executions>
+ <execution>
+ <id>generate-protobuf-sources</id>
+ <phase>generate-sources</phase>
+ <goals>
+ <goal>run</goal>
+ </goals>
+ <configuration>
+ <includeStdTypes>true</includeStdTypes>
+ <protocVersion>${protobuf.version}</protocVersion>
+ <cleanOutputFolder>true</cleanOutputFolder>
+ <inputDirectories>
+ <inputDirectory>src/main/protobuf</inputDirectory>
+ <inputDirectory>${additional-sources.dir}</inputDirectory>
+ </inputDirectories>
+ <outputDirectory>${basedir}/target/generated-sources/protoc-jar</outputDirectory>
+ </configuration>
+ </execution>
+ </executions>
+ </plugin>
+ <!--
+ The following plugin will shade com.google.protobuf under org.apache.flink.statefun.sdk.shaded.
+ -->
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-shade-plugin</artifactId>
+ <executions>
+ <execution>
+ <id>shade-protobuf</id>
+ <phase>package</phase>
+ <goals>
+ <goal>shade</goal>
+ </goals>
+ <configuration>
+ <createDependencyReducedPom>false</createDependencyReducedPom>
+ <artifactSet>
+ <includes combine.children="append">
+ <include>com.google.protobuf:protobuf-java</include>
+ </includes>
+ </artifactSet>
+ <relocations combine.children="append">
+ <relocation>
+ <pattern>com.google.protobuf</pattern>
+ <shadedPattern>org.apache.flink.statefun.sdk.shaded.com.google.protobuf
+ </shadedPattern>
+ </relocation>
+ </relocations>
+ <filters>
+ <filter>
+ <artifact>com.google.protobuf:protobuf-java</artifact>
+ <excludes>
+ <exclude>google/**</exclude>
+ </excludes>
+ </filter>
+ </filters>
+ </configuration>
+ </execution>
+ </executions>
+ </plugin>
+ </plugins>
+ </build>
+</project>
