NIFI-7054: Add RecordSinkServiceLookup for dynamic sink routing (#4020)

* NIFI-7054: Add RecordSinkServiceLookup for dynamic sink routing

* NIFI-7054: Incorporated review comments
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Matthew Burgess 2020-02-03 09:45:08 -05:00 committed by GitHub
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@ -721,6 +721,12 @@ language governing permissions and limitations under the License. -->
<version>1.12.0-SNAPSHOT</version>
<type>nar</type>
</dependency>
<dependency>
<groupId>org.apache.nifi</groupId>
<artifactId>nifi-record-sink-service-nar</artifactId>
<version>1.12.0-SNAPSHOT</version>
<type>nar</type>
</dependency>
<!-- dependencies for jaxb/activation/annotation for running NiFi on Java 11 -->
<!-- TODO: remove these once minimum Java version is 11 -->
<dependency>

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@ -0,0 +1,43 @@
<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<!--
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.
-->
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.apache.nifi</groupId>
<artifactId>nifi-record-sink-service-bundle</artifactId>
<version>1.12.0-SNAPSHOT</version>
</parent>
<artifactId>nifi-record-sink-service-nar</artifactId>
<packaging>nar</packaging>
<properties>
<maven.javadoc.skip>true</maven.javadoc.skip>
<source.skip>true</source.skip>
</properties>
<dependencies>
<dependency>
<groupId>org.apache.nifi</groupId>
<artifactId>nifi-standard-services-api-nar</artifactId>
<version>1.12.0-SNAPSHOT</version>
<type>nar</type>
</dependency>
<dependency>
<groupId>org.apache.nifi</groupId>
<artifactId>nifi-record-sink-service</artifactId>
<version>1.12.0-SNAPSHOT</version>
</dependency>
</dependencies>
</project>

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@ -0,0 +1,209 @@
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@ -0,0 +1,63 @@
<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<!--
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.
-->
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.apache.nifi</groupId>
<artifactId>nifi-record-sink-service-bundle</artifactId>
<version>1.12.0-SNAPSHOT</version>
</parent>
<artifactId>nifi-record-sink-service</artifactId>
<packaging>jar</packaging>
<dependencies>
<dependency>
<groupId>org.apache.nifi</groupId>
<artifactId>nifi-api</artifactId>
</dependency>
<dependency>
<groupId>org.apache.nifi</groupId>
<artifactId>nifi-utils</artifactId>
<version>1.12.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>org.apache.nifi</groupId>
<artifactId>nifi-record-sink-api</artifactId>
</dependency>
<dependency>
<groupId>org.apache.nifi</groupId>
<artifactId>nifi-record-serialization-service-api</artifactId>
</dependency>
<dependency>
<groupId>org.apache.nifi</groupId>
<artifactId>nifi-record</artifactId>
</dependency>
<dependency>
<groupId>org.apache.nifi</groupId>
<artifactId>nifi-service-utils</artifactId>
<version>1.12.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>org.apache.nifi</groupId>
<artifactId>nifi-properties</artifactId>
</dependency>
<dependency>
<groupId>org.apache.nifi</groupId>
<artifactId>nifi-mock</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
</project>

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@ -0,0 +1,84 @@
/*
* 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.nifi.record.sink.lookup;
import org.apache.nifi.annotation.behavior.DynamicProperty;
import org.apache.nifi.annotation.documentation.CapabilityDescription;
import org.apache.nifi.annotation.documentation.Tags;
import org.apache.nifi.expression.ExpressionLanguageScope;
import org.apache.nifi.processor.exception.ProcessException;
import org.apache.nifi.record.sink.RecordSinkService;
import org.apache.nifi.serialization.WriteResult;
import org.apache.nifi.serialization.record.RecordSet;
import org.apache.nifi.service.lookup.AbstractSingleAttributeBasedControllerServiceLookup;
import java.io.IOException;
import java.util.Map;
@Tags({"record", "sink", "lookup"})
@CapabilityDescription("Provides a RecordSinkService that can be used to dynamically select another RecordSinkService. This service " +
"requires an attribute named 'record.sink.name' to be passed in when asking for a connection, and will throw an exception " +
"if the attribute is missing. The value of 'record.sink.name' will be used to select the RecordSinkService that has been " +
"registered with that name. This will allow multiple RecordSinkServices to be defined and registered, and then selected " +
"dynamically at runtime by tagging flow files with the appropriate 'record.sink.name' attribute. Note that this controller service " +
"is not intended for use in reporting tasks that employ RecordSinkService instances, such as QueryNiFiReportingTask.")
@DynamicProperty(name = "The name to register the specified RecordSinkService", value = "The RecordSinkService",
description = "If '" + RecordSinkServiceLookup.RECORD_SINK_NAME_ATTRIBUTE + "' attribute contains " +
"the name of the dynamic property, then the RecordSinkService (registered in the value) will be selected.",
expressionLanguageScope = ExpressionLanguageScope.NONE)
public class RecordSinkServiceLookup
extends AbstractSingleAttributeBasedControllerServiceLookup<RecordSinkService> implements RecordSinkService {
public static final String RECORD_SINK_NAME_ATTRIBUTE = "record.sink.name";
RecordSinkService recordSinkService;
@Override
protected String getLookupAttribute() {
return RECORD_SINK_NAME_ATTRIBUTE;
}
@Override
public Class<RecordSinkService> getServiceType() {
return RecordSinkService.class;
}
@Override
public WriteResult sendData(RecordSet recordSet, Map<String, String> attributes, boolean sendZeroResults) throws IOException {
try {
RecordSinkService recordSink = lookupService(attributes);
if (recordSinkService != recordSink) {
// Save for later reset(), and do a reset now since it has changed
recordSinkService = recordSink;
recordSinkService.reset();
}
return recordSinkService.sendData(recordSet, attributes, sendZeroResults);
} catch (ProcessException pe) {
// Lookup was unsuccessful, wrap the exception in an IOException to honor the contract
throw new IOException(pe);
}
}
@Override
public void reset() {
// By convention, calling reset() before sendData should be a no-op, so we can just delegate the reset() call after sendData() has been called once
if (recordSinkService != null) {
recordSinkService.reset();
}
}
}

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@ -0,0 +1,15 @@
# 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.
org.apache.nifi.record.sink.lookup.RecordSinkServiceLookup

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@ -0,0 +1,106 @@
/*
* 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.nifi.record.sink.lookup;
import org.apache.nifi.components.AbstractConfigurableComponent;
import org.apache.nifi.controller.ControllerServiceInitializationContext;
import org.apache.nifi.record.sink.RecordSinkService;
import org.apache.nifi.record.sink.RetryableIOException;
import org.apache.nifi.reporting.InitializationException;
import org.apache.nifi.serialization.WriteResult;
import org.apache.nifi.serialization.record.Record;
import org.apache.nifi.serialization.record.RecordSchema;
import org.apache.nifi.serialization.record.RecordSet;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class MockRecordSinkService extends AbstractConfigurableComponent implements RecordSinkService {
private List<Map<String, Object>> rows = new ArrayList<>();
private boolean transmitted = false;
private boolean failWithRetryableError = false;
private String name;
private int resetCount = 0;
public MockRecordSinkService(String name) {
this.name = name;
}
public MockRecordSinkService(String name, boolean failWithRetryableError) {
this(name);
this.failWithRetryableError = failWithRetryableError;
}
@Override
public WriteResult sendData(RecordSet recordSet, Map<String, String> attributes, boolean sendZeroResults) throws IOException {
if (failWithRetryableError) {
throw new RetryableIOException("Retryable");
}
int numRecordsWritten = 0;
RecordSchema recordSchema = recordSet.getSchema();
Record record;
while ((record = recordSet.next()) != null) {
Map<String, Object> row = new HashMap<>();
final Record finalRecord = record;
recordSchema.getFieldNames().forEach((fieldName) -> row.put(fieldName, finalRecord.getValue(fieldName)));
rows.add(row);
numRecordsWritten++;
}
if (numRecordsWritten > 0 || sendZeroResults) {
transmitted = true;
}
Map<String, String> returnAttributes = new HashMap<>(attributes);
returnAttributes.put("my.name", name);
return WriteResult.of(numRecordsWritten, returnAttributes);
}
@Override
public void reset() {
resetCount++;
}
@Override
public String getIdentifier() {
return name;
}
@Override
public void initialize(ControllerServiceInitializationContext context) throws InitializationException {
}
public List<Map<String, Object>> getRows() {
return rows;
}
public boolean isTransmitted() {
return transmitted;
}
public int getResetCount() {
return resetCount;
}
public void setFailWithRetryableError(boolean failWithRetryableError) {
this.failWithRetryableError = failWithRetryableError;
}
}

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@ -0,0 +1,46 @@
/*
* 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.nifi.record.sink.lookup;
import org.apache.nifi.components.PropertyDescriptor;
import org.apache.nifi.processor.AbstractProcessor;
import org.apache.nifi.processor.ProcessContext;
import org.apache.nifi.processor.ProcessSession;
import org.apache.nifi.processor.exception.ProcessException;
import org.apache.nifi.record.sink.RecordSinkService;
import java.util.ArrayList;
import java.util.List;
public class TestProcessor extends AbstractProcessor {
@Override
public void onTrigger(ProcessContext context, ProcessSession session) throws ProcessException {
}
@Override
protected List<PropertyDescriptor> getSupportedPropertyDescriptors() {
List<PropertyDescriptor> propDescs = new ArrayList<>();
propDescs.add(new PropertyDescriptor.Builder()
.name("RecordSinkService test processor")
.description("RecordSinkService test processor")
.identifiesControllerService(RecordSinkService.class)
.required(true)
.build());
return propDescs;
}
}

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@ -0,0 +1,209 @@
/*
* 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.nifi.record.sink.lookup;
import org.apache.nifi.reporting.InitializationException;
import org.apache.nifi.serialization.SimpleRecordSchema;
import org.apache.nifi.serialization.WriteResult;
import org.apache.nifi.serialization.record.MapRecord;
import org.apache.nifi.serialization.record.Record;
import org.apache.nifi.serialization.record.RecordField;
import org.apache.nifi.serialization.record.RecordFieldType;
import org.apache.nifi.serialization.record.RecordSchema;
import org.apache.nifi.serialization.record.RecordSet;
import org.apache.nifi.util.TestRunner;
import org.apache.nifi.util.TestRunners;
import org.junit.Before;
import org.junit.Test;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.fail;
public class TestRecordSinkServiceLookup {
private MockRecordSinkServiceLookup sinkLookup;
private TestRunner runner;
private MockRecordSinkService sinkA, sinkB;
private RecordSet recordSet;
@Before
public void setup() throws InitializationException {
sinkA = new MockRecordSinkService("a");
sinkB = new MockRecordSinkService("b");
sinkLookup = new MockRecordSinkServiceLookup();
runner = TestRunners.newTestRunner(TestProcessor.class);
final String sinkServiceAIdentifier = "a";
runner.addControllerService(sinkServiceAIdentifier, sinkA);
final String sinkServiceBIdentifier = "b";
runner.addControllerService(sinkServiceBIdentifier, sinkB);
runner.addControllerService("sink-lookup", sinkLookup);
runner.setProperty(sinkLookup, "a", sinkServiceAIdentifier);
runner.setProperty(sinkLookup, "b", sinkServiceBIdentifier);
runner.enableControllerService(sinkA);
runner.enableControllerService(sinkB);
runner.enableControllerService(sinkLookup);
final List<RecordField> fields = new ArrayList<>();
fields.add(new RecordField("a", RecordFieldType.STRING.getDataType()));
fields.add(new RecordField("b", RecordFieldType.BOOLEAN.getDataType()));
final RecordSchema schema = new SimpleRecordSchema(fields);
final Map<String, Object> valueMap1 = new HashMap<>();
valueMap1.put("a", "Hello");
valueMap1.put("b", true);
final Record record1 = new MapRecord(schema, valueMap1);
final Map<String, Object> valueMap2 = new HashMap<>();
valueMap2.put("a", "World");
valueMap2.put("b", false);
final Record record2 = new MapRecord(schema, valueMap2);
recordSet = RecordSet.of(schema, record1, record2);
}
@Test
public void testLookupServiceA() {
final Map<String, String> attributes = new HashMap<>();
attributes.put(RecordSinkServiceLookup.RECORD_SINK_NAME_ATTRIBUTE, "a");
try {
final WriteResult writeResult = sinkLookup.sendData(recordSet, attributes, false);
assertNotNull(writeResult);
assertEquals(2, writeResult.getRecordCount());
String returnedName = writeResult.getAttributes().get("my.name");
assertEquals("a", returnedName);
} catch (IOException ioe) {
fail("Should have completed successfully");
}
}
@Test
public void testLookupServiceB() {
final Map<String, String> attributes = new HashMap<>();
attributes.put(RecordSinkServiceLookup.RECORD_SINK_NAME_ATTRIBUTE, "b");
try {
final WriteResult writeResult = sinkLookup.sendData(recordSet, attributes, false);
assertNotNull(writeResult);
assertEquals(2, writeResult.getRecordCount());
String returnedName = writeResult.getAttributes().get("my.name");
assertEquals("b", returnedName);
} catch (IOException ioe) {
fail("Should have completed successfully");
}
}
@Test
public void testLookupServiceAThenB() {
final Map<String, String> attributes = new HashMap<>();
attributes.put(RecordSinkServiceLookup.RECORD_SINK_NAME_ATTRIBUTE, "a");
try {
final WriteResult writeResult = sinkLookup.sendData(recordSet, attributes, false);
String returnedName = writeResult.getAttributes().get("my.name");
assertEquals("a", returnedName);
assertEquals(1, sinkA.getResetCount());
} catch (IOException ioe) {
fail("Should have completed successfully");
}
attributes.put(RecordSinkServiceLookup.RECORD_SINK_NAME_ATTRIBUTE, "b");
try {
final WriteResult writeResult = sinkLookup.sendData(recordSet, attributes, false);
String returnedName = writeResult.getAttributes().get("my.name");
assertEquals("b", returnedName);
assertEquals(1, sinkB.getResetCount());
} catch (IOException ioe) {
fail("Should have completed successfully");
}
// reset() was called on the retrieved sinks (not the lookup itself) in sendData() when the sink changed
assertEquals(0, sinkLookup.getResetCount());
sinkLookup.reset();
assertEquals(1, sinkLookup.getResetCount());
}
@Test
public void testLookupServiceAThenA() {
final Map<String, String> attributes = new HashMap<>();
attributes.put(RecordSinkServiceLookup.RECORD_SINK_NAME_ATTRIBUTE, "a");
try {
WriteResult writeResult = sinkLookup.sendData(recordSet, attributes, false);
String returnedName = writeResult.getAttributes().get("my.name");
assertEquals("a", returnedName);
assertEquals(1, sinkA.getResetCount());
writeResult = sinkLookup.sendData(recordSet, attributes, false);
returnedName = writeResult.getAttributes().get("my.name");
assertEquals("a", returnedName);
assertEquals(1, sinkA.getResetCount());
} catch (IOException ioe) {
fail("Should have completed successfully");
}
// reset() was called on the retrieved sinks (not the lookup itself) in sendData() when the sink changed
assertEquals(0, sinkLookup.getResetCount());
sinkLookup.reset();
assertEquals(1, sinkLookup.getResetCount());
}
@Test(expected = IOException.class)
public void testLookupWithoutAttributes() throws IOException {
sinkLookup.sendData(recordSet, Collections.emptyMap(), false);
}
@Test(expected = IOException.class)
public void testLookupMissingRecordSinkNameAttribute() throws IOException {
sinkLookup.sendData(recordSet, Collections.emptyMap(), false);
}
@Test(expected = IOException.class)
public void testLookupWithDatabaseNameThatDoesNotExist() throws IOException {
final Map<String, String> attributes = new HashMap<>();
attributes.put(RecordSinkServiceLookup.RECORD_SINK_NAME_ATTRIBUTE, "DOES-NOT-EXIST");
sinkLookup.sendData(recordSet, attributes, false);
}
public static class MockRecordSinkServiceLookup extends RecordSinkServiceLookup {
private int resetCount = 0;
@Override
public void reset() {
resetCount++;
}
public int getResetCount() {
return resetCount;
}
}
}

View File

@ -0,0 +1,30 @@
<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<!--
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.
-->
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.apache.nifi</groupId>
<artifactId>nifi-standard-services</artifactId>
<version>1.12.0-SNAPSHOT</version>
</parent>
<artifactId>nifi-record-sink-service-bundle</artifactId>
<packaging>pom</packaging>
<modules>
<module>nifi-record-sink-service</module>
<module>nifi-record-sink-service-nar</module>
</modules>
</project>

View File

@ -48,5 +48,6 @@
<module>nifi-proxy-configuration-bundle</module>
<module>nifi-rules-engine-service-api</module>
<module>nifi-record-sink-api</module>
<module>nifi-record-sink-service-bundle</module>
</modules>
</project>