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Posted to commits@flink.apache.org by ch...@apache.org on 2017/05/25 18:49:45 UTC
[4/5] flink git commit: [FLINK-4497] [cassandra] Scala Case Classes /
Tuple support
[FLINK-4497] [cassandra] Scala Case Classes / Tuple support
This closes #2633.
Project: http://git-wip-us.apache.org/repos/asf/flink/repo
Commit: http://git-wip-us.apache.org/repos/asf/flink/commit/8dfc9f9d
Tree: http://git-wip-us.apache.org/repos/asf/flink/tree/8dfc9f9d
Diff: http://git-wip-us.apache.org/repos/asf/flink/diff/8dfc9f9d
Branch: refs/heads/master
Commit: 8dfc9f9d0f06e4ea2376b0a58efd623e58735ae5
Parents: d4fba3b
Author: zentol <ch...@apache.org>
Authored: Mon Oct 10 15:30:48 2016 +0200
Committer: zentol <ch...@apache.org>
Committed: Thu May 25 15:58:51 2017 +0200
----------------------------------------------------------------------
.../flink-connector-cassandra/pom.xml | 11 +++
.../cassandra/AbstractCassandraTupleSink.java | 52 +++++++++++
.../cassandra/CassandraScalaProductSink.java | 41 +++++++++
.../connectors/cassandra/CassandraSink.java | 91 ++++++++++++++++----
.../connectors/cassandra/CassandraSinkBase.java | 15 ++--
.../cassandra/CassandraTupleSink.java | 27 +-----
.../cassandra/CassandraConnectorITCase.java | 55 ++++++++++++
7 files changed, 245 insertions(+), 47 deletions(-)
----------------------------------------------------------------------
http://git-wip-us.apache.org/repos/asf/flink/blob/8dfc9f9d/flink-connectors/flink-connector-cassandra/pom.xml
----------------------------------------------------------------------
diff --git a/flink-connectors/flink-connector-cassandra/pom.xml b/flink-connectors/flink-connector-cassandra/pom.xml
index 2722c30..4a720c4 100644
--- a/flink-connectors/flink-connector-cassandra/pom.xml
+++ b/flink-connectors/flink-connector-cassandra/pom.xml
@@ -99,6 +99,12 @@ under the License.
<scope>provided</scope>
</dependency>
<dependency>
+ <groupId>org.apache.flink</groupId>
+ <artifactId>flink-streaming-scala_2.10</artifactId>
+ <version>${project.version}</version>
+ <scope>provided</scope>
+ </dependency>
+ <dependency>
<groupId>com.datastax.cassandra</groupId>
<artifactId>cassandra-driver-core</artifactId>
<version>${driver.version}</version>
@@ -129,6 +135,11 @@ under the License.
</exclusions>
</dependency>
<dependency>
+ <groupId>org.scala-lang</groupId>
+ <artifactId>scala-library</artifactId>
+ <scope>provided</scope>
+ </dependency>
+ <dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>${guava.version}</version>
http://git-wip-us.apache.org/repos/asf/flink/blob/8dfc9f9d/flink-connectors/flink-connector-cassandra/src/main/java/org/apache/flink/streaming/connectors/cassandra/AbstractCassandraTupleSink.java
----------------------------------------------------------------------
diff --git a/flink-connectors/flink-connector-cassandra/src/main/java/org/apache/flink/streaming/connectors/cassandra/AbstractCassandraTupleSink.java b/flink-connectors/flink-connector-cassandra/src/main/java/org/apache/flink/streaming/connectors/cassandra/AbstractCassandraTupleSink.java
new file mode 100644
index 0000000..7a8d097
--- /dev/null
+++ b/flink-connectors/flink-connector-cassandra/src/main/java/org/apache/flink/streaming/connectors/cassandra/AbstractCassandraTupleSink.java
@@ -0,0 +1,52 @@
+/*
+ * 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.flink.streaming.connectors.cassandra;
+
+import com.datastax.driver.core.PreparedStatement;
+import com.datastax.driver.core.ResultSet;
+import com.google.common.util.concurrent.ListenableFuture;
+import org.apache.flink.configuration.Configuration;
+
+/**
+ * Abstract sink to write tuple-like values into a Cassandra cluster.
+ *
+ * @param <IN> Type of the elements emitted by this sink
+ */
+public abstract class AbstractCassandraTupleSink<IN> extends CassandraSinkBase<IN, ResultSet> {
+ private final String insertQuery;
+ private transient PreparedStatement ps;
+
+ public AbstractCassandraTupleSink(String insertQuery, ClusterBuilder builder) {
+ super(builder);
+ this.insertQuery = insertQuery;
+ }
+
+ @Override
+ public void open(Configuration configuration) {
+ super.open(configuration);
+ this.ps = session.prepare(insertQuery);
+ }
+
+ @Override
+ public ListenableFuture<ResultSet> send(IN value) {
+ Object[] fields = extract(value);
+ return session.executeAsync(ps.bind(fields));
+ }
+
+ protected abstract Object[] extract(IN record);
+}
http://git-wip-us.apache.org/repos/asf/flink/blob/8dfc9f9d/flink-connectors/flink-connector-cassandra/src/main/java/org/apache/flink/streaming/connectors/cassandra/CassandraScalaProductSink.java
----------------------------------------------------------------------
diff --git a/flink-connectors/flink-connector-cassandra/src/main/java/org/apache/flink/streaming/connectors/cassandra/CassandraScalaProductSink.java b/flink-connectors/flink-connector-cassandra/src/main/java/org/apache/flink/streaming/connectors/cassandra/CassandraScalaProductSink.java
new file mode 100644
index 0000000..a975985
--- /dev/null
+++ b/flink-connectors/flink-connector-cassandra/src/main/java/org/apache/flink/streaming/connectors/cassandra/CassandraScalaProductSink.java
@@ -0,0 +1,41 @@
+/*
+ * 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.flink.streaming.connectors.cassandra;
+
+
+import scala.Product;
+
+/**
+ * Sink to write scala tuples and case classes into a Cassandra cluster.
+ *
+ * @param <IN> Type of the elements emitted by this sink, it must extend {@link Product}
+ */
+public class CassandraScalaProductSink<IN extends Product> extends AbstractCassandraTupleSink<IN> {
+ public CassandraScalaProductSink(String insertQuery, ClusterBuilder builder) {
+ super(insertQuery, builder);
+ }
+
+ @Override
+ protected Object[] extract(IN record) {
+ Object[] al = new Object[record.productArity()];
+ for (int i = 0; i < record.productArity(); i++) {
+ al[i] = record.productElement(i);
+ }
+ return al;
+ }
+}
http://git-wip-us.apache.org/repos/asf/flink/blob/8dfc9f9d/flink-connectors/flink-connector-cassandra/src/main/java/org/apache/flink/streaming/connectors/cassandra/CassandraSink.java
----------------------------------------------------------------------
diff --git a/flink-connectors/flink-connector-cassandra/src/main/java/org/apache/flink/streaming/connectors/cassandra/CassandraSink.java b/flink-connectors/flink-connector-cassandra/src/main/java/org/apache/flink/streaming/connectors/cassandra/CassandraSink.java
index 9f0079f..6a33601 100644
--- a/flink-connectors/flink-connector-cassandra/src/main/java/org/apache/flink/streaming/connectors/cassandra/CassandraSink.java
+++ b/flink-connectors/flink-connector-cassandra/src/main/java/org/apache/flink/streaming/connectors/cassandra/CassandraSink.java
@@ -22,7 +22,9 @@ import org.apache.flink.annotation.PublicEvolving;
import org.apache.flink.api.common.typeinfo.TypeInformation;
import org.apache.flink.api.common.typeutils.TypeSerializer;
import org.apache.flink.api.java.tuple.Tuple;
+import org.apache.flink.api.java.typeutils.PojoTypeInfo;
import org.apache.flink.api.java.typeutils.TupleTypeInfo;
+import org.apache.flink.api.scala.typeutils.CaseClassTypeInfo;
import org.apache.flink.streaming.api.datastream.DataStream;
import org.apache.flink.streaming.api.datastream.DataStreamSink;
import org.apache.flink.streaming.api.datastream.SingleOutputStreamOperator;
@@ -30,6 +32,7 @@ import org.apache.flink.streaming.api.operators.ChainingStrategy;
import org.apache.flink.streaming.api.transformations.SinkTransformation;
import org.apache.flink.streaming.api.transformations.StreamTransformation;
import org.apache.flink.streaming.runtime.operators.CheckpointCommitter;
+import scala.Product;
/**
* This class wraps different Cassandra sink implementations to provide a common interface for all of them.
@@ -190,13 +193,31 @@ public class CassandraSink<IN> {
* @param <IN> input type
* @return CassandraSinkBuilder, to further configure the sink
*/
+ public static <IN> CassandraSinkBuilder<IN> addSink(org.apache.flink.streaming.api.scala.DataStream<IN> input) {
+ return addSink(input.javaStream());
+ }
+
+ /**
+ * Writes a DataStream into a Cassandra database.
+ *
+ * @param input input DataStream
+ * @param <IN> input type
+ * @return CassandraSinkBuilder, to further configure the sink
+ */
public static <IN, T extends Tuple> CassandraSinkBuilder<IN> addSink(DataStream<IN> input) {
- if (input.getType() instanceof TupleTypeInfo) {
+ TypeInformation<IN> typeInfo = input.getType();
+ if (typeInfo instanceof TupleTypeInfo) {
DataStream<T> tupleInput = (DataStream<T>) input;
return (CassandraSinkBuilder<IN>) new CassandraTupleSinkBuilder<>(tupleInput, tupleInput.getType(), tupleInput.getType().createSerializer(tupleInput.getExecutionEnvironment().getConfig()));
- } else {
+ }
+ if (typeInfo instanceof PojoTypeInfo) {
return new CassandraPojoSinkBuilder<>(input, input.getType(), input.getType().createSerializer(input.getExecutionEnvironment().getConfig()));
}
+ if (typeInfo instanceof CaseClassTypeInfo) {
+ DataStream<Product> productInput = (DataStream<Product>) input;
+ return (CassandraSinkBuilder<IN>) new CassandraScalaProductSinkBuilder<>(productInput, productInput.getType(), productInput.getType().createSerializer(input.getExecutionEnvironment().getConfig()));
+ }
+ throw new IllegalArgumentException("No support for the type of the given DataStream: " + input.getType());
}
public abstract static class CassandraSinkBuilder<IN> {
@@ -300,7 +321,16 @@ public class CassandraSink<IN> {
* @return finalized sink
* @throws Exception
*/
- public abstract CassandraSink<IN> build() throws Exception;
+ public CassandraSink<IN> build() throws Exception {
+ sanityCheck();
+ return isWriteAheadLogEnabled
+ ? createWriteAheadSink()
+ : createSink();
+ }
+
+ protected abstract CassandraSink<IN> createSink() throws Exception;
+
+ protected abstract CassandraSink<IN> createWriteAheadSink() throws Exception;
protected void sanityCheck() {
if (builder == null) {
@@ -323,15 +353,15 @@ public class CassandraSink<IN> {
}
@Override
- public CassandraSink<IN> build() throws Exception {
- sanityCheck();
- if (isWriteAheadLogEnabled) {
- return committer == null
- ? new CassandraSink<>(input.transform("Cassandra Sink", null, new CassandraTupleWriteAheadSink<>(query, serializer, builder, new CassandraCommitter(builder))))
- : new CassandraSink<>(input.transform("Cassandra Sink", null, new CassandraTupleWriteAheadSink<>(query, serializer, builder, committer)));
- } else {
- return new CassandraSink<>(input.addSink(new CassandraTupleSink<IN>(query, builder)).name("Cassandra Sink"));
- }
+ public CassandraSink<IN> createSink() throws Exception {
+ return new CassandraSink<>(input.addSink(new CassandraTupleSink<IN>(query, builder)).name("Cassandra Sink"));
+ }
+
+ @Override
+ protected CassandraSink<IN> createWriteAheadSink() throws Exception {
+ return committer == null
+ ? new CassandraSink<>(input.transform("Cassandra Sink", null, new CassandraTupleWriteAheadSink<>(query, serializer, builder, new CassandraCommitter(builder))))
+ : new CassandraSink<>(input.transform("Cassandra Sink", null, new CassandraTupleWriteAheadSink<>(query, serializer, builder, committer)));
}
}
@@ -349,13 +379,38 @@ public class CassandraSink<IN> {
}
@Override
- public CassandraSink<IN> build() throws Exception {
- sanityCheck();
- if (isWriteAheadLogEnabled) {
- throw new IllegalArgumentException("Exactly-once guarantees can only be provided for tuple types.");
- } else {
- return new CassandraSink<>(input.addSink(new CassandraPojoSink<>(typeInfo.getTypeClass(), builder)).name("Cassandra Sink"));
+ public CassandraSink<IN> createSink() throws Exception {
+ return new CassandraSink<>(input.addSink(new CassandraPojoSink<>(typeInfo.getTypeClass(), builder)).name("Cassandra Sink"));
+ }
+
+ @Override
+ protected CassandraSink<IN> createWriteAheadSink() throws Exception {
+ throw new IllegalArgumentException("Exactly-once guarantees can only be provided for tuple types.");
+ }
+ }
+
+ public static class CassandraScalaProductSinkBuilder<IN extends Product> extends CassandraSinkBuilder<IN> {
+
+ public CassandraScalaProductSinkBuilder(DataStream<IN> input, TypeInformation<IN> typeInfo, TypeSerializer<IN> serializer) {
+ super(input, typeInfo, serializer);
+ }
+
+ @Override
+ protected void sanityCheck() {
+ super.sanityCheck();
+ if (query == null || query.length() == 0) {
+ throw new IllegalArgumentException("Query must not be null or empty.");
}
}
+
+ @Override
+ public CassandraSink<IN> createSink() throws Exception {
+ return new CassandraSink<>(input.addSink(new CassandraScalaProductSink<IN>(query, builder)).name("Cassandra Sink"));
+ }
+
+ @Override
+ protected CassandraSink<IN> createWriteAheadSink() throws Exception {
+ throw new IllegalArgumentException("Exactly-once guarantees can only be provided for flink tuple types.");
+ }
}
}
http://git-wip-us.apache.org/repos/asf/flink/blob/8dfc9f9d/flink-connectors/flink-connector-cassandra/src/main/java/org/apache/flink/streaming/connectors/cassandra/CassandraSinkBase.java
----------------------------------------------------------------------
diff --git a/flink-connectors/flink-connector-cassandra/src/main/java/org/apache/flink/streaming/connectors/cassandra/CassandraSinkBase.java b/flink-connectors/flink-connector-cassandra/src/main/java/org/apache/flink/streaming/connectors/cassandra/CassandraSinkBase.java
index b281525..b1b261e 100644
--- a/flink-connectors/flink-connector-cassandra/src/main/java/org/apache/flink/streaming/connectors/cassandra/CassandraSinkBase.java
+++ b/flink-connectors/flink-connector-cassandra/src/main/java/org/apache/flink/streaming/connectors/cassandra/CassandraSinkBase.java
@@ -37,7 +37,7 @@ import java.util.concurrent.atomic.AtomicInteger;
* @param <IN> Type of the elements emitted by this sink
*/
public abstract class CassandraSinkBase<IN, V> extends RichSinkFunction<IN> {
- protected static final Logger LOG = LoggerFactory.getLogger(CassandraSinkBase.class);
+ protected final Logger log = LoggerFactory.getLogger(getClass());
protected transient Cluster cluster;
protected transient Session session;
@@ -48,7 +48,7 @@ public abstract class CassandraSinkBase<IN, V> extends RichSinkFunction<IN> {
private final AtomicInteger updatesPending = new AtomicInteger();
- protected CassandraSinkBase(ClusterBuilder builder) {
+ CassandraSinkBase(ClusterBuilder builder) {
this.builder = builder;
ClosureCleaner.clean(builder, true);
}
@@ -76,7 +76,7 @@ public abstract class CassandraSinkBase<IN, V> extends RichSinkFunction<IN> {
}
exception = t;
- LOG.error("Error while sending value.", t);
+ log.error("Error while sending value.", t);
}
};
this.cluster = builder.getCluster();
@@ -107,21 +107,24 @@ public abstract class CassandraSinkBase<IN, V> extends RichSinkFunction<IN> {
updatesPending.wait();
}
}
-
+
+ if (exception != null) {
+ throw new IOException("Error while sending value.", exception);
+ }
} finally {
try {
if (session != null) {
session.close();
}
} catch (Exception e) {
- LOG.error("Error while closing session.", e);
+ log.error("Error while closing session.", e);
}
try {
if (cluster != null) {
cluster.close();
}
} catch (Exception e) {
- LOG.error("Error while closing cluster.", e);
+ log.error("Error while closing cluster.", e);
}
}
}
http://git-wip-us.apache.org/repos/asf/flink/blob/8dfc9f9d/flink-connectors/flink-connector-cassandra/src/main/java/org/apache/flink/streaming/connectors/cassandra/CassandraTupleSink.java
----------------------------------------------------------------------
diff --git a/flink-connectors/flink-connector-cassandra/src/main/java/org/apache/flink/streaming/connectors/cassandra/CassandraTupleSink.java b/flink-connectors/flink-connector-cassandra/src/main/java/org/apache/flink/streaming/connectors/cassandra/CassandraTupleSink.java
index 0a9ef06..a7ec1df 100644
--- a/flink-connectors/flink-connector-cassandra/src/main/java/org/apache/flink/streaming/connectors/cassandra/CassandraTupleSink.java
+++ b/flink-connectors/flink-connector-cassandra/src/main/java/org/apache/flink/streaming/connectors/cassandra/CassandraTupleSink.java
@@ -17,39 +17,20 @@
package org.apache.flink.streaming.connectors.cassandra;
-import com.datastax.driver.core.PreparedStatement;
-import com.datastax.driver.core.ResultSet;
-import com.google.common.util.concurrent.ListenableFuture;
import org.apache.flink.api.java.tuple.Tuple;
-import org.apache.flink.configuration.Configuration;
/**
- * Flink Sink to save data into a Cassandra cluster.
+ * Sink to write Flink {@link Tuple}s into a Cassandra cluster.
*
* @param <IN> Type of the elements emitted by this sink, it must extend {@link Tuple}
*/
-public class CassandraTupleSink<IN extends Tuple> extends CassandraSinkBase<IN, ResultSet> {
- private final String insertQuery;
- private transient PreparedStatement ps;
-
+public class CassandraTupleSink<IN extends Tuple> extends AbstractCassandraTupleSink<IN> {
public CassandraTupleSink(String insertQuery, ClusterBuilder builder) {
- super(builder);
- this.insertQuery = insertQuery;
- }
-
- @Override
- public void open(Configuration configuration) {
- super.open(configuration);
- this.ps = session.prepare(insertQuery);
+ super(insertQuery, builder);
}
@Override
- public ListenableFuture<ResultSet> send(IN value) {
- Object[] fields = extract(value);
- return session.executeAsync(ps.bind(fields));
- }
-
- private Object[] extract(IN record) {
+ protected Object[] extract(IN record) {
Object[] al = new Object[record.getArity()];
for (int i = 0; i < record.getArity(); i++) {
al[i] = record.getField(i);
http://git-wip-us.apache.org/repos/asf/flink/blob/8dfc9f9d/flink-connectors/flink-connector-cassandra/src/test/java/org/apache/flink/streaming/connectors/cassandra/CassandraConnectorITCase.java
----------------------------------------------------------------------
diff --git a/flink-connectors/flink-connector-cassandra/src/test/java/org/apache/flink/streaming/connectors/cassandra/CassandraConnectorITCase.java b/flink-connectors/flink-connector-cassandra/src/test/java/org/apache/flink/streaming/connectors/cassandra/CassandraConnectorITCase.java
index 06f3c35..95cd86c 100644
--- a/flink-connectors/flink-connector-cassandra/src/test/java/org/apache/flink/streaming/connectors/cassandra/CassandraConnectorITCase.java
+++ b/flink-connectors/flink-connector-cassandra/src/test/java/org/apache/flink/streaming/connectors/cassandra/CassandraConnectorITCase.java
@@ -31,14 +31,20 @@ import org.apache.flink.api.common.ExecutionConfig;
import org.apache.flink.api.common.JobID;
import org.apache.flink.api.common.io.InputFormat;
import org.apache.flink.api.common.io.OutputFormat;
+import org.apache.flink.api.common.typeinfo.BasicTypeInfo;
+import org.apache.flink.api.common.typeinfo.TypeInformation;
+import org.apache.flink.api.common.typeutils.TypeSerializer;
import org.apache.flink.api.java.tuple.Tuple3;
import org.apache.flink.api.java.typeutils.TupleTypeInfo;
import org.apache.flink.api.java.typeutils.TypeExtractor;
+import org.apache.flink.api.scala.typeutils.CaseClassTypeInfo;
import org.apache.flink.batch.connectors.cassandra.CassandraInputFormat;
import org.apache.flink.batch.connectors.cassandra.CassandraOutputFormat;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.core.io.InputSplit;
import org.apache.flink.runtime.testutils.CommonTestUtils;
+import org.apache.flink.streaming.api.datastream.DataStream;
+import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.streaming.runtime.operators.WriteAheadSinkTestBase;
import org.junit.AfterClass;
@@ -49,6 +55,8 @@ import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
+import scala.collection.JavaConverters;
+import scala.collection.Seq;
import java.io.BufferedWriter;
import java.io.File;
@@ -420,4 +428,51 @@ public class CassandraConnectorITCase extends WriteAheadSinkTestBase<Tuple3<Stri
private String injectTableName(String target) {
return target.replace(TABLE_NAME_VARIABLE, TABLE_NAME_PREFIX + tableID);
}
+
+ @Test
+ public void testCassandraScalaTupleAtLeastOnceSinkBuilderDetection() throws Exception {
+ Class<scala.Tuple1<String>> c = (Class<scala.Tuple1<String>>) new scala.Tuple1<>("hello").getClass();
+ Seq<TypeInformation<?>> typeInfos = JavaConverters.asScalaBufferConverter(
+ Collections.<TypeInformation<?>>singletonList(BasicTypeInfo.STRING_TYPE_INFO)).asScala();
+ Seq<String> fieldNames = JavaConverters.asScalaBufferConverter(
+ Collections.singletonList("_1")).asScala();
+
+ CaseClassTypeInfo<scala.Tuple1<String>> typeInfo = new CaseClassTypeInfo<scala.Tuple1<String>>(c, null, typeInfos, fieldNames) {
+ @Override
+ public TypeSerializer<scala.Tuple1<String>> createSerializer(ExecutionConfig config) {
+ return null;
+ }
+ };
+
+ StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
+ DataStream<scala.Tuple1<String>> input = env.fromElements(new scala.Tuple1<>("hello"));
+
+ CassandraSink.CassandraSinkBuilder<scala.Tuple1<String>> sinkBuilder = CassandraSink.addSink(input);
+ assertTrue(sinkBuilder instanceof CassandraSink.CassandraScalaProductSinkBuilder);
+ }
+
+ @Test
+ public void testCassandraScalaTupleAtLeastSink() throws Exception {
+ CassandraScalaProductSink<scala.Tuple3<String, Integer, Integer>> sink = new CassandraScalaProductSink<>(INSERT_DATA_QUERY, builder);
+
+ List<scala.Tuple3<String, Integer, Integer>> scalaTupleCollection = new ArrayList<>(20);
+ for (int i = 0; i < 20; i++) {
+ scalaTupleCollection.add(new scala.Tuple3<>(UUID.randomUUID().toString(), i, 0));
+ }
+
+ sink.open(new Configuration());
+ for (scala.Tuple3<String, Integer, Integer> value : scalaTupleCollection) {
+ sink.invoke(value);
+ }
+ sink.close();
+
+ ResultSet rs = session.execute(SELECT_DATA_QUERY);
+ List<Row> rows = rs.all();
+ assertEquals(scalaTupleCollection.size(), rows.size());
+
+ for (Row row : rows) {
+ scalaTupleCollection.remove(new scala.Tuple3<>(row.getString("id"), row.getInt("counter"), row.getInt("batch_id")));
+ }
+ assertEquals(0, scalaTupleCollection.size());
+ }
}