Added spark streaming custom receiver for pulsar

docs/Documentation.md

@@ -12,6 +12,7 @@
   - [Geo-Replication](GeoReplication.md)
   - [WebSocket API](WebSocket.md)
   - [Apache Storm adaptor](PulsarStorm.md)
+  - [Spark Streaming Pulsar Receiver](PulsarSpark.md)
   - [Modular Load Manager](ModularLoadManager.md)
 * Internal Docs
   - [Binary protocol specification](BinaryProtocol.md)

docs/PulsarSpark.md

@@ -0,0 +1,45 @@
+# Spark Streaming Pulsar Receiver
+
+<!-- TOC depthFrom:2 depthTo:3 withLinks:1 updateOnSave:1 orderedList:0 -->
+
+- [Introduction](#introduction)
+- [Using Spark Streaming Pulsar Receiver](#using-spark-streaming-pulsar-receiver)
+- [Example](#example)
+
+<!-- /TOC -->
+
+## Introduction
+Spark Streaming Pulsar Receiver is a custom receiver which enables Apache Spark Streaming to receive data from Pulsar.
+
+An application can receive RDD format data via Spark Streaming Pulsar Receiver and can process it variously.
+
+## Using Spark Streaming Pulsar Receiver
+Include dependency for Spark Streaming Pulsar Receiver:
+
+```xml
+<dependency>
+  <groupId>com.yahoo.pulsar</groupId>
+  <artifactId>pulsar-spark</artifactId>
+  <version>${pulsar.version}</version>
+</dependency>
+```
+
+Pass an instance of SparkStreamingPulsarReceiver to receiverStream method in JavaStreamingContext:
+```java
+SparkConf conf = new SparkConf().setMaster("local[*]").setAppName("pulsar-spark");
+JavaStreamingContext jssc = new JavaStreamingContext(conf, Durations.seconds(5));
+
+ClientConfiguration clientConf = new ClientConfiguration();
+ConsumerConfiguration consConf = new ConsumerConfiguration();
+String url = "pulsar://localhost:6650/";
+String topic = "persistent://sample/standalone/ns1/topic1";
+String subs = "sub1";
+
+JavaReceiverInputDStream<byte[]> msgs = jssc
+        .receiverStream(new SparkStreamingPulsarReceiver(clientConf, consConf, url, topic, subs));
+```
+
+
+## Example
+You can find a complete example [here](../pulsar-spark/src/test/java/com/yahoo/pulsar/spark/example/SparkStreamingPulsarReceiverExample.java).
+In this example, the number of messages which contain "Pulsar" string in received messages is counted.

docs/locale/ja/Documentation.md

@@ -11,5 +11,6 @@
   - [ジオレプリケーション](GeoReplication.md)
   - [WebSocket API](WebSocket.md)
   - [Apache Stormのためのアダプタ](PulsarStorm.md)
+  - [Spark Streaming Pulsar Receiver](PulsarSpark.md)
 * 内部仕様
   - [バイナリプロトコルの仕様](BinaryProtocol.md)

docs/locale/ja/PulsarSpark.md

@@ -0,0 +1,45 @@
+# Spark Streaming Pulsar Receiver
+
+<!-- TOC depthFrom:2 depthTo:3 withLinks:1 updateOnSave:1 orderedList:0 -->
+
+- [概要](#概要)
+- [Spark Streaming Pulsar Receiverの利用](#spark-streaming-pulsar-receiverの利用)
+- [実装例](#実装例)
+
+<!-- /TOC -->
+
+## 概要
+Spark Streaming Pulsar ReceiverはApache Spark StreamingがPulsarからデータを受け取るためのCustom Receiverです。
+
+アプリケーションはSpark Streaming Pulsar Receiverを通してRDD形式のデータを受け取り、様々な処理を行うことができます。
+
+## Spark Streaming Pulsar Receiverの利用
+Spark Streaming Pulsar Receiverの依存をincludeします:
+
+```xml
+<dependency>
+  <groupId>com.yahoo.pulsar</groupId>
+  <artifactId>pulsar-spark</artifactId>
+  <version>${pulsar.version}</version>
+</dependency>
+```
+
+JavaStreamingContextのreceiverStreamメソッドにSparkStreamingPulsarReceiverのインスタンスを渡します:
+```java
+SparkConf conf = new SparkConf().setMaster("local[*]").setAppName("pulsar-spark");
+JavaStreamingContext jssc = new JavaStreamingContext(conf, Durations.seconds(5));
+
+ClientConfiguration clientConf = new ClientConfiguration();
+ConsumerConfiguration consConf = new ConsumerConfiguration();
+String url = "pulsar://localhost:6650/";
+String topic = "persistent://sample/standalone/ns1/topic1";
+String subs = "sub1";
+
+JavaReceiverInputDStream<byte[]> msgs = jssc
+        .receiverStream(new SparkStreamingPulsarReceiver(clientConf, consConf, url, topic, subs));
+```
+
+
+## 実装例
+完全な実装の例は[SparkStreamingPulsarReceiver.java](../../../pulsar-spark/src/test/java/com/yahoo/pulsar/spark/example/SparkStreamingPulsarReceiverExample.java)を参照してください。
+この例では、受け取ったメッセージのうち"Pulsar"という文字列が含まれるものがいくつあるかを数えます。

pom.xml

@@ -78,6 +78,7 @@ flexible messaging model and an intuitive client API.</description>
     <module>pulsar-websocket</module>
     <module>pulsar-discovery-service</module>
     <module>pulsar-storm</module>
+    <module>pulsar-spark</module>
     <module>pulsar-zookeeper-utils</module>
     <module>pulsar-checksum</module>
     <module>pulsar-testclient</module>
@@ -404,6 +405,34 @@ flexible messaging model and an intuitive client API.</description>
         <version>${athenz.version}</version>
       </dependency>
 
+      <dependency>
+        <groupId>org.apache.spark</groupId>
+        <artifactId>spark-streaming_2.10</artifactId>
+        <version>2.1.0</version>
+        <exclusions>
+          <exclusion>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+          </exclusion>
+          <exclusion>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-codec-http</artifactId>
+          </exclusion>
+          <exclusion>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-transport-native-epoll</artifactId>
+          </exclusion>
+          <exclusion>
+            <groupId>io.netty</groupId>
+            <artifactId>netty</artifactId>
+          </exclusion>
+          <exclusion>
+            <groupId>io.netty</groupId>
+            <artifactId>netty-all</artifactId>
+          </exclusion>
+        </exclusions>
+      </dependency>
+
     </dependencies>
   </dependencyManagement>
 

pulsar-spark/pom.xml

@@ -0,0 +1,124 @@
+<!--
+
+    Copyright 2016 Yahoo Inc.
+
+    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.
+
+-->
+<project
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
+  xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>com.yahoo.pulsar</groupId>
+    <artifactId>pulsar</artifactId>
+    <version>1.17-SNAPSHOT</version>
+    <relativePath>..</relativePath>
+  </parent>
+
+  <artifactId>pulsar-spark</artifactId>
+  <name>Spark Streaming Pulsar Receivers</name>
+
+  <dependencies>
+    <dependency>
+      <groupId>${project.groupId}</groupId>
+      <artifactId>pulsar-broker</artifactId>
+      <version>${project.version}</version>
+      <scope>test</scope>
+    </dependency>
+
+    <dependency>
+      <groupId>${project.groupId}</groupId>
+      <artifactId>pulsar-broker</artifactId>
+      <version>${project.version}</version>
+      <scope>test</scope>
+      <type>test-jar</type>
+    </dependency>
+
+    <dependency>
+      <groupId>org.mockito</groupId>
+      <artifactId>mockito-core</artifactId>
+      <scope>test</scope>
+    </dependency>
+
+    <dependency>
+      <groupId>${project.groupId}</groupId>
+      <artifactId>managed-ledger</artifactId>
+      <version>${project.version}</version>
+      <scope>test</scope>
+      <type>test-jar</type>
+    </dependency>
+
+    <dependency>
+      <groupId>${project.groupId}</groupId>
+      <artifactId>pulsar-client</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+
+    <dependency>
+      <groupId>org.slf4j</groupId>
+      <artifactId>slf4j-api</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>org.apache.spark</groupId>
+      <artifactId>spark-streaming_2.10</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>com.google.guava</groupId>
+      <artifactId>guava</artifactId>
+    </dependency>
+
+  </dependencies>
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-shade-plugin</artifactId>
+        <executions>
+          <execution>
+            <phase>package</phase>
+            <goals>
+              <goal>shade</goal>
+            </goals>
+            <configuration>
+              <createDependencyReducedPom>true</createDependencyReducedPom>
+              <promoteTransitiveDependencies>ture</promoteTransitiveDependencies>
+              <artifactSet>
+                <includes>
+                  <include>com.google.guava:guava</include>
+                  <include>io.netty:netty-codec-http</include>
+                  <include>io.netty:netty-transport-native-epoll</include>
+                  <include>io.netty:netty</include>
+                  <include>io.netty:netty-all</include>
+                </includes>
+              </artifactSet>
+              <relocations>
+                <relocation>
+                  <pattern>com.google</pattern>
+                  <shadedPattern>com.yahoo.pulsar.shade.com.google</shadedPattern>
+                </relocation>
+                <relocation>
+                  <pattern>io.netty</pattern>
+                  <shadedPattern>com.yahoo.pulsar.shade.io.netty</shadedPattern>
+                </relocation>
+              </relocations>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
+    </plugins>
+  </build>
+</project>

pulsar-spark/src/main/java/com/yahoo/pulsar/spark/SparkStreamingPulsarReceiver.java

@@ -0,0 +1,91 @@
+/**
+ * Copyright 2016 Yahoo Inc.
+ *
+ * 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 com.yahoo.pulsar.spark;
+
+import org.apache.spark.storage.StorageLevel;
+import org.apache.spark.streaming.receiver.Receiver;
+
+import com.yahoo.pulsar.client.api.ClientConfiguration;
+import com.yahoo.pulsar.client.api.Consumer;
+import com.yahoo.pulsar.client.api.ConsumerConfiguration;
+import com.yahoo.pulsar.client.api.Message;
+import com.yahoo.pulsar.client.api.MessageListener;
+import com.yahoo.pulsar.client.api.PulsarClient;
+import com.yahoo.pulsar.client.api.PulsarClientException;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.concurrent.TimeUnit;
+
+public class SparkStreamingPulsarReceiver extends Receiver<byte[]> {
+
+    private ClientConfiguration clientConfiguration;
+    private ConsumerConfiguration consumerConfiguration;
+    private PulsarClient pulsarClient;
+    private String url;
+    private String topic;
+    private String subscription;
+
+    public SparkStreamingPulsarReceiver(ClientConfiguration clientConfiguration,
+            ConsumerConfiguration consumerConfiguration, String url, String topic, String subscription) {
+        this(StorageLevel.MEMORY_AND_DISK_2(), clientConfiguration, consumerConfiguration, url, topic, subscription);
+    }
+
+    public SparkStreamingPulsarReceiver(StorageLevel storageLevel, ClientConfiguration clientConfiguration,
+            ConsumerConfiguration consumerConfiguration, String url, String topic, String subscription) {
+        super(storageLevel);
+        this.clientConfiguration = clientConfiguration;
+        this.url = url;
+        this.topic = topic;
+        this.subscription = subscription;
+        if (consumerConfiguration.getAckTimeoutMillis() == 0) {
+            consumerConfiguration.setAckTimeout(60, TimeUnit.SECONDS);
+        }
+        consumerConfiguration.setMessageListener((consumer, msg) -> {
+            try {
+                store(msg.getData());
+                consumer.acknowledgeAsync(msg);
+            } catch (Exception e) {
+                log.error("Failed to store a message : {}", e.getMessage());
+            }
+        });
+        this.consumerConfiguration = consumerConfiguration;
+    }
+
+    public void onStart() {
+        try {
+            pulsarClient = PulsarClient.create(url, clientConfiguration);
+            pulsarClient.subscribe(topic, subscription, consumerConfiguration);
+        } catch (PulsarClientException e) {
+            log.error("Failed to start subscription : {}", e.getMessage());
+            restart("Restart a consumer");
+        }
+    }
+
+    public void onStop() {
+        try {
+            if (pulsarClient != null) {
+                pulsarClient.close();
+            }
+        } catch (PulsarClientException e) {
+            log.error("Failed to close client : {}", e.getMessage());
+        }
+    }
+
+    private static final Logger log = LoggerFactory.getLogger(SparkStreamingPulsarReceiver.class);
+}