merlimat closed pull request #2456: Remove Aerospike Connector
URL: https://github.com/apache/incubator-pulsar/pull/2456
This is a PR merged from a forked repository.
As GitHub hides the original diff on merge, it is displayed below for
the sake of provenance:
As this is a foreign pull request (from a fork), the diff is supplied
below (as it won't show otherwise due to GitHub magic):
diff --git a/distribution/io/src/assemble/io.xml
b/distribution/io/src/assemble/io.xml
index f69d5ce002..28f9ad6bbb 100644
--- a/distribution/io/src/assemble/io.xml
+++ b/distribution/io/src/assemble/io.xml
@@ -74,11 +74,5 @@
<outputDirectory>connectors</outputDirectory>
<fileMode>644</fileMode>
</file>
-
- <file>
-
<source>${basedir}/../../pulsar-io/aerospike/target/pulsar-io-aerospike-${project.version}.nar</source>
- <outputDirectory>connectors</outputDirectory>
- <fileMode>644</fileMode>
- </file>
</files>
</assembly>
diff --git a/pom.xml b/pom.xml
index 66d371eb3a..f7a93f182d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -161,7 +161,6 @@ flexible messaging model and an intuitive client
API.</description>
<sketches.version>0.8.3</sketches.version>
<hbc-core.version>2.2.0</hbc-core.version>
<cassandra-driver-core.version>3.4.0</cassandra-driver-core.version>
- <aerospike-client.version>4.1.5</aerospike-client.version>
<kafka-client.version>0.10.2.1</kafka-client.version>
<rabbitmq-client.version>5.1.1</rabbitmq-client.version>
<aws-sdk.version>1.11.297</aws-sdk.version>
diff --git a/pulsar-io/aerospike/pom.xml b/pulsar-io/aerospike/pom.xml
deleted file mode 100644
index 5f678be013..0000000000
--- a/pulsar-io/aerospike/pom.xml
+++ /dev/null
@@ -1,75 +0,0 @@
-<!--
-
- 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="http://maven.apache.org/POM/4.0.0";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
- xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/xsd/maven-4.0.0.xsd";>
- <modelVersion>4.0.0</modelVersion>
- <parent>
- <groupId>org.apache.pulsar</groupId>
- <artifactId>pulsar-io</artifactId>
- <version>2.2.0-incubating-SNAPSHOT</version>
- </parent>
-
- <artifactId>pulsar-io-aerospike</artifactId>
- <name>Pulsar IO :: Aerospike</name>
-
- <dependencies>
-
- <dependency>
- <groupId>${project.groupId}</groupId>
- <artifactId>pulsar-io-core</artifactId>
- <version>${project.version}</version>
- </dependency>
-
- <dependency>
- <groupId>com.fasterxml.jackson.core</groupId>
- <artifactId>jackson-databind</artifactId>
- </dependency>
-
- <dependency>
- <groupId>com.fasterxml.jackson.dataformat</groupId>
- <artifactId>jackson-dataformat-yaml</artifactId>
- </dependency>
-
- <dependency>
- <groupId>com.aerospike</groupId>
- <artifactId>aerospike-client</artifactId>
- <version>${aerospike-client.version}</version>
- <exclusions>
- <exclusion>
- <groupId>org.gnu</groupId>
- <artifactId>gnu-crypto</artifactId>
- </exclusion>
- </exclusions>
- </dependency>
-
- </dependencies>
-
- <build>
- <plugins>
- <plugin>
- <groupId>org.apache.nifi</groupId>
- <artifactId>nifi-nar-maven-plugin</artifactId>
- </plugin>
- </plugins>
- </build>
-
-
-</project>
diff --git
a/pulsar-io/aerospike/src/main/java/org/apache/pulsar/io/aerospike/AerospikeAbstractSink.java
b/pulsar-io/aerospike/src/main/java/org/apache/pulsar/io/aerospike/AerospikeAbstractSink.java
deleted file mode 100644
index fe3787a0ce..0000000000
---
a/pulsar-io/aerospike/src/main/java/org/apache/pulsar/io/aerospike/AerospikeAbstractSink.java
+++ /dev/null
@@ -1,169 +0,0 @@
-/**
- * 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.
- */
-
-package org.apache.pulsar.io.aerospike;
-
-import com.aerospike.client.AerospikeClient;
-import com.aerospike.client.AerospikeException;
-import com.aerospike.client.Bin;
-import com.aerospike.client.Host;
-import com.aerospike.client.Key;
-import com.aerospike.client.Value;
-import com.aerospike.client.async.EventLoop;
-import com.aerospike.client.async.EventPolicy;
-import com.aerospike.client.async.NioEventLoops;
-import com.aerospike.client.listener.WriteListener;
-import com.aerospike.client.policy.ClientPolicy;
-import com.aerospike.client.policy.WritePolicy;
-
-import java.util.Map;
-import java.util.concurrent.BlockingQueue;
-import java.util.concurrent.LinkedBlockingDeque;
-
-import org.apache.pulsar.functions.api.Record;
-import org.apache.pulsar.io.core.KeyValue;
-import org.apache.pulsar.io.core.Sink;
-import org.apache.pulsar.io.core.SinkContext;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-/**
- * A Simple abstract class for Aerospike sink
- * Users need to implement extractKeyValue function to use this sink
- */
-public abstract class AerospikeAbstractSink<K, V> implements Sink<byte[]> {
-
- private static final Logger LOG =
LoggerFactory.getLogger(AerospikeAbstractSink.class);
-
- // ----- Runtime fields
- private AerospikeSinkConfig aerospikeSinkConfig;
- private AerospikeClient client;
- private WritePolicy writePolicy;
- private BlockingQueue<AWriteListener> queue;
- private NioEventLoops eventLoops;
- private EventLoop eventLoop;
-
- @Override
- public void open(Map<String, Object> config, SinkContext sinkContext)
throws Exception {
- aerospikeSinkConfig = AerospikeSinkConfig.load(config);
- if (aerospikeSinkConfig.getSeedHosts() == null
- || aerospikeSinkConfig.getKeyspace() == null
- || aerospikeSinkConfig.getColumnName() == null) {
- throw new IllegalArgumentException("Required property not set.");
- }
-
- writePolicy = new WritePolicy();
- writePolicy.maxRetries = aerospikeSinkConfig.getRetries();
- writePolicy.setTimeout(aerospikeSinkConfig.getTimeoutMs());
- createClient();
- queue = new
LinkedBlockingDeque<>(aerospikeSinkConfig.getMaxConcurrentRequests());
- for (int i = 0; i < aerospikeSinkConfig.getMaxConcurrentRequests();
++i) {
- queue.put(new AWriteListener(queue));
- }
-
- eventLoops = new NioEventLoops(new EventPolicy(), 1);
- eventLoop = eventLoops.next();
- }
-
- @Override
- public void close() throws Exception {
- if (client != null) {
- client.close();
- }
-
- if (eventLoops != null) {
- eventLoops.close();
- }
- LOG.info("Connection Closed");
- }
-
- @Override
- public void write(Record<byte[]> record) {
- KeyValue<K, V> keyValue = extractKeyValue(record);
- Key key = new Key(aerospikeSinkConfig.getKeyspace(),
aerospikeSinkConfig.getKeySet(), keyValue.getKey().toString());
- Bin bin = new Bin(aerospikeSinkConfig.getColumnName(),
Value.getAsBlob(keyValue.getValue()));
- AWriteListener listener = null;
- try {
- listener = queue.take();
- } catch (InterruptedException ex) {
- record.fail();
- return;
- }
- listener.setContext(record);
- client.put(eventLoop, listener, writePolicy, key, bin);
- }
-
- private void createClient() {
- String[] hosts = aerospikeSinkConfig.getSeedHosts().split(",");
- if (hosts.length <= 0) {
- throw new RuntimeException("Invalid Seed Hosts");
- }
- Host[] aeroSpikeHosts = new Host[hosts.length];
- for (int i = 0; i < hosts.length; ++i) {
- String[] hostPort = hosts[i].split(":");
- aeroSpikeHosts[i] = new Host(hostPort[0],
Integer.valueOf(hostPort[1]));
- }
- ClientPolicy policy = new ClientPolicy();
- if (aerospikeSinkConfig.getUserName() != null &&
!aerospikeSinkConfig.getUserName().isEmpty()
- && aerospikeSinkConfig.getPassword() != null &&
!aerospikeSinkConfig.getPassword().isEmpty()) {
- policy.user = aerospikeSinkConfig.getUserName();
- policy.password = aerospikeSinkConfig.getPassword();
- }
- client = new AerospikeClient(policy, aeroSpikeHosts);
- }
-
- private class AWriteListener implements WriteListener {
- private Record<byte[]> context;
- private BlockingQueue<AWriteListener> queue;
-
- public AWriteListener(BlockingQueue<AWriteListener> queue) {
- this.queue = queue;
- }
-
- public void setContext(Record<byte[]> record) {
- this.context = record;
- }
-
- @Override
- public void onSuccess(Key key) {
- if (context != null) {
- context.ack();
- }
- try {
- queue.put(this);
- } catch (InterruptedException ex) {
- throw new RuntimeException("Interrupted while being added to
the queue" ,ex);
- }
- }
-
- @Override
- public void onFailure(AerospikeException e) {
- if (context != null) {
- context.fail();
- }
- try {
- queue.put(this);
- } catch (InterruptedException ex) {
- throw new RuntimeException("Interrupted while being added to
the queue", ex);
- }
- }
- }
-
- public abstract KeyValue<K, V> extractKeyValue(Record<byte[]> message);
-}
\ No newline at end of file
diff --git
a/pulsar-io/aerospike/src/main/java/org/apache/pulsar/io/aerospike/AerospikeSinkConfig.java
b/pulsar-io/aerospike/src/main/java/org/apache/pulsar/io/aerospike/AerospikeSinkConfig.java
deleted file mode 100644
index 931d28031d..0000000000
---
a/pulsar-io/aerospike/src/main/java/org/apache/pulsar/io/aerospike/AerospikeSinkConfig.java
+++ /dev/null
@@ -1,64 +0,0 @@
-/**
- * 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.
- */
-
-package org.apache.pulsar.io.aerospike;
-
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.dataformat.yaml.YAMLFactory;
-import lombok.*;
-import lombok.experimental.Accessors;
-
-import java.io.File;
-import java.io.IOException;
-import java.io.Serializable;
-import java.util.Map;
-
-@Data
-@Setter
-@Getter
-@EqualsAndHashCode
-@ToString
-@Accessors(chain = true)
-public class AerospikeSinkConfig implements Serializable {
-
- private static final long serialVersionUID = 1L;
-
- private String seedHosts;
- private String keyspace;
- private String columnName;
-
- // Optional
- private String userName;
- private String password;
- private String keySet;
- private int maxConcurrentRequests = 100;
- private int timeoutMs = 100;
- private int retries = 1;
-
-
- public static AerospikeSinkConfig load(String yamlFile) throws IOException
{
- ObjectMapper mapper = new ObjectMapper(new YAMLFactory());
- return mapper.readValue(new File(yamlFile), AerospikeSinkConfig.class);
- }
-
- public static AerospikeSinkConfig load(Map<String, Object> map) throws
IOException {
- ObjectMapper mapper = new ObjectMapper();
- return mapper.readValue(new ObjectMapper().writeValueAsString(map),
AerospikeSinkConfig.class);
- }
-}
\ No newline at end of file
diff --git
a/pulsar-io/aerospike/src/main/java/org/apache/pulsar/io/aerospike/AerospikeStringSink.java
b/pulsar-io/aerospike/src/main/java/org/apache/pulsar/io/aerospike/AerospikeStringSink.java
deleted file mode 100644
index bac07a0e7b..0000000000
---
a/pulsar-io/aerospike/src/main/java/org/apache/pulsar/io/aerospike/AerospikeStringSink.java
+++ /dev/null
@@ -1,35 +0,0 @@
-/**
- * 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.
- */
-
-package org.apache.pulsar.io.aerospike;
-
-import org.apache.pulsar.functions.api.Record;
-import org.apache.pulsar.io.core.KeyValue;
-
-/**
- * Aerospike sink that treats incoming messages on the input topic as Strings
- * and write identical key/value pairs.
- */
-public class AerospikeStringSink extends AerospikeAbstractSink<String, String>
{
- @Override
- public KeyValue<String, String> extractKeyValue(Record<byte[]> record) {
- String key = record.getKey().orElseGet(() -> new
String(record.getValue()));
- return new KeyValue<>(key, new String(record.getValue()));
- }
-}
\ No newline at end of file
diff --git
a/pulsar-io/aerospike/src/main/resources/META-INF/services/pulsar-io.yaml
b/pulsar-io/aerospike/src/main/resources/META-INF/services/pulsar-io.yaml
deleted file mode 100644
index f2a7ab5eb8..0000000000
--- a/pulsar-io/aerospike/src/main/resources/META-INF/services/pulsar-io.yaml
+++ /dev/null
@@ -1,22 +0,0 @@
-#
-# 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.
-#
-
-name: aerospike
-description: Aerospike database sink
-sinkClass: org.apache.pulsar.io.aerospike.AerospikeStringSink
diff --git a/pulsar-io/pom.xml b/pulsar-io/pom.xml
index 4307e8f3ee..67aec42a27 100644
--- a/pulsar-io/pom.xml
+++ b/pulsar-io/pom.xml
@@ -35,7 +35,6 @@
<module>core</module>
<module>twitter</module>
<module>cassandra</module>
- <module>aerospike</module>
<module>kafka</module>
<module>rabbitmq</module>
<module>kinesis</module>
diff --git a/site2/docs/deploy-bare-metal.md b/site2/docs/deploy-bare-metal.md
index b5793c6e4a..b0590a0fe0 100644
--- a/site2/docs/deploy-bare-metal.md
+++ b/site2/docs/deploy-bare-metal.md
@@ -125,7 +125,6 @@ $ tar xvfz
apache-pulsar-io-connectors-{{pulsar:version}}-bin.tar.gz
$ mv apache-pulsar-io-connectors-{{pulsar:version}}/connectors connectors
$ ls connectors
-pulsar-io-aerospike-{{pulsar:version}}.nar
pulsar-io-cassandra-{{pulsar:version}}.nar
pulsar-io-kafka-{{pulsar:version}}.nar
pulsar-io-kinesis-{{pulsar:version}}.nar
diff --git a/site2/docs/getting-started-standalone.md
b/site2/docs/getting-started-standalone.md
index 0dcf024a40..6207cff9ac 100644
--- a/site2/docs/getting-started-standalone.md
+++ b/site2/docs/getting-started-standalone.md
@@ -87,7 +87,6 @@ $ tar xvfz
/path/to/apache-pulsar-io-connectors-{{pulsar:version}}-bin.tar.gz
$ cd apache-pulsar-io-connectors-{{pulsar:version}}/connectors connectors
$ ls connectors
-pulsar-io-aerospike-{{pulsar:version}}.nar
pulsar-io-cassandra-{{pulsar:version}}.nar
pulsar-io-kafka-{{pulsar:version}}.nar
pulsar-io-kinesis-{{pulsar:version}}.nar
diff --git a/site2/docs/io-aerospike.md b/site2/docs/io-aerospike.md
deleted file mode 100644
index b23e2e30c4..0000000000
--- a/site2/docs/io-aerospike.md
+++ /dev/null
@@ -1,21 +0,0 @@
----
-id: io-aerospike
-title: Aerospike Sink Connector
-sidebar_label: Aerospike Sink Connector
----
-
-The Aerospike Sink connector is used to write messages to an Aerospike Cluster.
-
-## Sink Configuration Options
-
-The following configuration options are specific to the Aerospike Connector:
-
-| Name | Required | Default | Description |
-|------|----------|---------|-------------|
-| `seedHosts` | `true` | `null` | Comma seperated list of one or more
Aerospike cluster hosts; each host can be specified as a valid IP address or
hostname followed by an optional port number (default is 3000). |
-| `keyspace` | `true` | `null` | Aerospike namespace to use. |
-| `keySet` | `false` | `null` | Aerospike set name to use. |
-| `columnName` | `true` | `null` | Aerospike bin name to use. |
-| `maxConcurrentRequests` | `false` | `100` | Maximum number of concurrent
Aerospike transactions that a Sink can open. |
-| `timeoutMs` | `false` | `100` | A single timeout value controls
`socketTimeout` and `totalTimeout` for Aerospike transactions. |
-| `retries` | `false` | `1` | Maximum number of retries before aborting a
write transaction to Aerospike. |
diff --git a/site2/docs/io-connectors.md b/site2/docs/io-connectors.md
index 5a7699898a..6f7d4b3a6b 100644
--- a/site2/docs/io-connectors.md
+++ b/site2/docs/io-connectors.md
@@ -9,7 +9,6 @@ These connectors import and export data from some of the most
commonly used data
as easy as writing a simple connector configuration and running the connector
locally or submitting the connector to a
Pulsar Functions cluster.
-- [Aerospike Sink Connector](io-aerospike.md)
- [Cassandra Sink Connector](io-cassandra.md)
- [Kafka Sink Connector](io-kafka.md#sink)
- [Kafka Source Connector](io-kafka.md#source)
diff --git a/site2/docs/io-overview.md b/site2/docs/io-overview.md
index 0c5571628e..be8792c7dc 100644
--- a/site2/docs/io-overview.md
+++ b/site2/docs/io-overview.md
@@ -4,7 +4,7 @@ title: Pulsar IO Overview
sidebar_label: Overview
---
-Messaging systems are most powerful when you can easily use them in
conjunction with external systems like databases and other messaging systems.
**Pulsar IO** is a feature of Pulsar that enables you to easily create, deploy,
and manage Pulsar **connectors** that interact with external systems, such as
[Apache Cassandra](https://cassandra.apache.org),
[Aerospike](https://www.aerospike.com), and many others.
+Messaging systems are most powerful when you can easily use them in
conjunction with external systems like databases and other messaging systems.
**Pulsar IO** is a feature of Pulsar that enables you to easily create, deploy,
and manage Pulsar **connectors** that interact with external systems, such as
[Apache Cassandra](https://cassandra.apache.org), and many others.
> #### Pulsar IO and Pulsar Functions
> Under the hood, Pulsar IO connectors are specialized [Pulsar
> Functions](functions-overview.md) purpose-built to interface with external
> systems. The [administrative interface](io-quickstart.md) for Pulsar IO is,
> in fact, quite similar to that of Pulsar Functions.
@@ -30,7 +30,6 @@ The following connectors are currently available for Pulsar:
|Name|Java Class|Documentation|
|---|---|---|
-|[Aerospike
sink](https://www.aerospike.com/)|[`org.apache.pulsar.io.aerospike.AerospikeSink`](https://github.com/apache/incubator-pulsar/blob/master/pulsar-io/aerospike/src/main/java/org/apache/pulsar/io/aerospike/AerospikeStringSink.java)|[Documentation](io-aerospike.md)|
|[Cassandra
sink](https://cassandra.apache.org)|[`org.apache.pulsar.io.cassandra.CassandraSink`](https://github.com/apache/incubator-pulsar/blob/master/pulsar-io/cassandra/src/main/java/org/apache/pulsar/io/cassandra/CassandraStringSink.java)|[Documentation](io-cassandra.md)|
|[Kafka
source](https://kafka.apache.org)|[`org.apache.pulsar.io.kafka.KafkaSource`](https://github.com/apache/incubator-pulsar/blob/master/pulsar-io/kafka/src/main/java/org/apache/pulsar/io/kafka/KafkaStringSource.java)|[Documentation](io-kafka.md#source)|
|[Kafka
sink](https://kafka.apache.org)|[`org.apache.pulsar.io.kafka.KafkaSink`](https://github.com/apache/incubator-pulsar/blob/master/pulsar-io/kafka/src/main/java/org/apache/pulsar/io/kafka/KafkaStringSink.java)|[Documentation](io-kafka.md#sink)|
diff --git a/site2/docs/io-quickstart.md b/site2/docs/io-quickstart.md
index 914429b30b..d426a1c7e4 100644
--- a/site2/docs/io-quickstart.md
+++ b/site2/docs/io-quickstart.md
@@ -69,7 +69,6 @@ $ tar xvfz
/path/to/apache-pulsar-io-connectors-{{pulsar:version}}-bin.tar.gz
$ cp -r apache-pulsar-io-connectors-{{pulsar:version}}/connectors connectors
$ ls connectors
-pulsar-io-aerospike-{{pulsar:version}}.nar
pulsar-io-cassandra-{{pulsar:version}}.nar
pulsar-io-kafka-{{pulsar:version}}.nar
pulsar-io-kinesis-{{pulsar:version}}.nar
@@ -123,7 +122,7 @@ curl -s http://localhost:8080/admin/v2/functions/connectors
Example output:
```json
-[{"name":"aerospike","description":"Aerospike database
sink","sinkClass":"org.apache.pulsar.io.aerospike.AerospikeStringSink"},{"name":"cassandra","description":"Writes
data into
Cassandra","sinkClass":"org.apache.pulsar.io.cassandra.CassandraStringSink"},{"name":"kafka","description":"Kafka
source and sink
connector","sourceClass":"org.apache.pulsar.io.kafka.KafkaStringSource","sinkClass":"org.apache.pulsar.io.kafka.KafkaStringSink"},{"name":"kinesis","description":"Kinesis
sink
connector","sinkClass":"org.apache.pulsar.io.kinesis.KinesisSink"},{"name":"rabbitmq","description":"RabbitMQ
source
connector","sourceClass":"org.apache.pulsar.io.rabbitmq.RabbitMQSource"},{"name":"twitter","description":"Ingest
data from Twitter
firehose","sourceClass":"org.apache.pulsar.io.twitter.TwitterFireHose"}]
+[{"name":"cassandra","description":"Writes data into
Cassandra","sinkClass":"org.apache.pulsar.io.cassandra.CassandraStringSink"},{"name":"kafka","description":"Kafka
source and sink
connector","sourceClass":"org.apache.pulsar.io.kafka.KafkaStringSource","sinkClass":"org.apache.pulsar.io.kafka.KafkaStringSink"},{"name":"kinesis","description":"Kinesis
sink
connector","sinkClass":"org.apache.pulsar.io.kinesis.KinesisSink"},{"name":"rabbitmq","description":"RabbitMQ
source
connector","sourceClass":"org.apache.pulsar.io.rabbitmq.RabbitMQSource"},{"name":"twitter","description":"Ingest
data from Twitter
firehose","sourceClass":"org.apache.pulsar.io.twitter.TwitterFireHose"}]
```
If an error occurred while starting Pulsar service, you may be able to seen
exception at the terminal you are running `pulsar/standalone`,
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