This is an automated email from the ASF dual-hosted git repository.
mattyb149 pushed a commit to branch main
in repository https://gitbox.apache.org/repos/asf/nifi.git
commit 23132fb89f63b8eb1305103934cb5aaed061eefe
Author: Adam <fisher1...@gmail.com>
AuthorDate: Sat Feb 16 19:30:39 2019 -0500
NIFI-6047
Added NiFi DetectDuplicateRecord standard processor.
Adding some documentation and PR review tweaks.
Exposing processor
Documentation updates, exception handling consolidation, added support for
record path field variables.
Added tests.
Build bump.
Migrated cache service to groovy folder.
Moved declarations for properties to @BeforeClass lifecycle method.
Adding some documentation and PR review tweaks.
Documentation updates, exception handling consolidation, added support for
record path field variables.
Added tests.
Build bump.
Migrated cache service to groovy folder.
Fixed variable type bug.
Fixed mapping of test params to usage.
Fixed potential illegal state exception bug.
---
.../processors/standard/DetectDuplicateRecord.java | 648 +++++++++++++++++++++
.../services/org.apache.nifi.processor.Processor | 1 +
.../DetectDuplicateRecord/additionalDetails.html | 96 +++
.../processors/standard/MockCacheService.groovy | 77 +++
.../standard/TestDetectDuplicateRecord.java | 209 +++++++
5 files changed, 1031 insertions(+)
diff --git
a/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/DetectDuplicateRecord.java
b/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/DetectDuplicateRecord.java
new file mode 100644
index 0000000..191a675
--- /dev/null
+++
b/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/DetectDuplicateRecord.java
@@ -0,0 +1,648 @@
+/*
+ * 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.processors.standard;
+
+import com.google.common.base.Joiner;
+import com.google.common.hash.BloomFilter;
+import com.google.common.hash.Funnels;
+import org.apache.commons.codec.binary.Hex;
+import org.apache.commons.codec.digest.DigestUtils;
+import org.apache.commons.codec.digest.MessageDigestAlgorithms;
+import org.apache.nifi.annotation.behavior.*;
+import org.apache.nifi.annotation.behavior.InputRequirement.Requirement;
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.SeeAlso;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.annotation.lifecycle.OnScheduled;
+import org.apache.nifi.components.*;
+import org.apache.nifi.distributed.cache.client.Deserializer;
+import org.apache.nifi.distributed.cache.client.DistributedMapCacheClient;
+import org.apache.nifi.distributed.cache.client.Serializer;
+import
org.apache.nifi.distributed.cache.client.exception.DeserializationException;
+import
org.apache.nifi.distributed.cache.client.exception.SerializationException;
+import org.apache.nifi.expression.AttributeExpression.ResultType;
+import org.apache.nifi.expression.ExpressionLanguageScope;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.flowfile.attributes.CoreAttributes;
+import org.apache.nifi.logging.ComponentLog;
+import org.apache.nifi.processor.*;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.processor.util.StandardValidators;
+import org.apache.nifi.record.path.FieldValue;
+import org.apache.nifi.record.path.RecordPath;
+import org.apache.nifi.record.path.RecordPathResult;
+import org.apache.nifi.record.path.util.RecordPathCache;
+import org.apache.nifi.record.path.validation.RecordPathPropertyNameValidator;
+import org.apache.nifi.record.path.validation.RecordPathValidator;
+import org.apache.nifi.schema.access.SchemaNotFoundException;
+import org.apache.nifi.serialization.*;
+import org.apache.nifi.serialization.record.Record;
+import org.apache.nifi.serialization.record.RecordSchema;
+import org.apache.nifi.serialization.record.util.DataTypeUtils;
+
+import java.io.*;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
+import java.security.MessageDigest;
+import java.util.*;
+import java.util.concurrent.TimeUnit;
+import java.util.stream.Collectors;
+
+import static java.util.stream.Collectors.toList;
+import static org.apache.commons.codec.binary.StringUtils.getBytesUtf8;
+import static org.apache.commons.lang3.StringUtils.*;
+
+@EventDriven
+@SupportsBatching
+@InputRequirement(Requirement.INPUT_REQUIRED)
+@SystemResourceConsideration(resource = SystemResource.MEMORY,
+ description = "The HashSet filter type will grow memory space
proportionate to the number of unique records processed. " +
+ "The BloomFilter type will use constant memory regardless of the
number of records processed.")
+@Tags({"text", "record", "update", "change", "replace", "modify", "distinct",
"unique",
+ "filter", "hash", "dupe", "duplicate", "dedupe"})
+@CapabilityDescription("Caches records from each incoming FlowFile and
determines if the record " +
+ "has already been seen. If so, routes the record to 'duplicate'. If the
record is " +
+ "not determined to be a duplicate, it is routed to 'non-duplicate'."
+)
+@WritesAttribute(attribute = "record.count", description = "The number of
records processed.")
+@DynamicProperty(
+ name = "RecordPath",
+ value = "An expression language statement used to determine how the
RecordPath is resolved. " +
+ "The following variables are availble: ${field.name},
${field.value}, ${field.type}",
+ description = "The name of each user-defined property must be a valid
RecordPath.")
+@SeeAlso(classNames = {
+
"org.apache.nifi.distributed.cache.client.DistributedMapCacheClientService",
+ "org.apache.nifi.distributed.cache.server.map.DistributedMapCacheServer",
+ "org.apache.nifi.processors.standard.DetectDuplicate"
+})
+public class DetectDuplicateRecord extends AbstractProcessor {
+
+ private static final String FIELD_NAME = "field.name";
+ private static final String FIELD_VALUE = "field.value";
+ private static final String FIELD_TYPE = "field.type";
+
+ private volatile RecordPathCache recordPathCache;
+ private volatile List<String> recordPaths;
+
+ // VALUES
+
+ static final AllowableValue NONE_ALGORITHM_VALUE = new
AllowableValue("none", "None",
+ "Do not use a hashing algorithm. The value of resolved RecordPaths
will be combined with tildes (~) to form the unique record key. " +
+ "This may use significantly more storage depending on the
size and shape or your data.");
+ static final AllowableValue MD5_ALGORITHM_VALUE = new
AllowableValue(MessageDigestAlgorithms.MD5, "MD5",
+ "The MD5 message-digest algorithm.");
+ static final AllowableValue SHA1_ALGORITHM_VALUE = new
AllowableValue(MessageDigestAlgorithms.SHA_1, "SHA-1",
+ "The SHA-1 cryptographic hash algorithm.");
+ static final AllowableValue SHA256_ALGORITHM_VALUE = new
AllowableValue(MessageDigestAlgorithms.SHA3_256, "SHA-256",
+ "The SHA-256 cryptographic hash algorithm.");
+ static final AllowableValue SHA512_ALGORITHM_VALUE = new
AllowableValue(MessageDigestAlgorithms.SHA3_512, "SHA-512",
+ "The SHA-512 cryptographic hash algorithm.");
+
+ static final AllowableValue HASH_SET_VALUE = new
AllowableValue("hash-set", "HashSet",
+ "Exactly matches records seen before with 100% accuracy at the
expense of more storage usage. " +
+ "Stores the filter data in a single cache entry in the
distributed cache, and is loaded entirely into memory during duplicate
detection. " +
+ "This filter is preferred for small to medium data sets
and offers high performance loaded into memory when this processor is
running.");
+ static final AllowableValue BLOOM_FILTER_VALUE = new
AllowableValue("bloom-filter", "BloomFilter",
+ "Space-efficient data structure ideal for large data sets using
probability to determine if a record was seen previously. " +
+ "False positive matches are possible, but false negatives
are not – in other words, a query returns either \"possibly in the set\" or
\"definitely not in the set\". " +
+ "You should use this option if the FlowFile content is
large and you can tolerate some duplication in the data. Uses constant storage
space regardless of the record set size.");
+
+ // PROPERTIES
+
+ static final PropertyDescriptor RECORD_READER = new
PropertyDescriptor.Builder()
+ .name("record-reader")
+ .displayName("Record Reader")
+ .description("Specifies the Controller Service to use for reading
incoming data")
+ .identifiesControllerService(RecordReaderFactory.class)
+ .required(true)
+ .build();
+
+ static final PropertyDescriptor RECORD_WRITER = new
PropertyDescriptor.Builder()
+ .name("record-writer")
+ .displayName("Record Writer")
+ .description("Specifies the Controller Service to use for writing
out the records")
+ .identifiesControllerService(RecordSetWriterFactory.class)
+ .required(true)
+ .build();
+
+ static final PropertyDescriptor INCLUDE_ZERO_RECORD_FLOWFILES = new
PropertyDescriptor.Builder()
+ .name("include-zero-record-flowfiles")
+ .displayName("Include Zero Record FlowFiles")
+ .description("When converting an incoming FlowFile, if the
conversion results in no data, "
+ + "this property specifies whether or not a FlowFile will
be sent to the corresponding relationship")
+ .expressionLanguageSupported(ExpressionLanguageScope.NONE)
+ .allowableValues("true", "false")
+ .defaultValue("true")
+ .required(true)
+ .build();
+
+ static final PropertyDescriptor CACHE_IDENTIFIER = new
PropertyDescriptor.Builder()
+ .name("cache-the-entry-identifier")
+ .displayName("Cache The Entry Identifier")
+ .description("When true this cause the processor to check for
duplicates and cache the Entry Identifier. When false, "
+ + "the processor would only check for duplicates and not
cache the Entry Identifier, requiring another "
+ + "processor to add identifiers to the distributed cache.")
+ .required(true)
+ .allowableValues("true", "false")
+ .defaultValue("true")
+ .build();
+
+ static final PropertyDescriptor DISTRIBUTED_CACHE_SERVICE = new
PropertyDescriptor.Builder()
+ .name("distributed-cache-service")
+ .displayName("Distributed Cache Service")
+ .description("The Controller Service that is used to cache unique
records, used to determine duplicates")
+ .required(false)
+ .identifiesControllerService(DistributedMapCacheClient.class)
+ .build();
+
+ static final PropertyDescriptor CACHE_ENTRY_IDENTIFIER = new
PropertyDescriptor.Builder()
+ .name("cache-entry-identifier")
+ .displayName("Cache Entry Identifier")
+ .description(
+ "A FlowFile attribute, or the results of an Attribute
Expression Language statement, which will be evaluated " +
+ "against a FlowFile in order to determine the
cached filter type value used to identify duplicates.")
+ .required(false)
+
.addValidator(StandardValidators.createAttributeExpressionLanguageValidator(ResultType.STRING,
true))
+ .defaultValue("${hash.value}")
+
.expressionLanguageSupported(ExpressionLanguageScope.FLOWFILE_ATTRIBUTES)
+ .build();
+
+ static final PropertyDescriptor AGE_OFF_DURATION = new
PropertyDescriptor.Builder()
+ .name("age-off-duration")
+ .displayName("Age Off Duration")
+ .description("Time interval to age off cached filter entries. When
the cache expires, the entire filter and its values " +
+ "are destroyed. Leaving this value empty will cause the
cached entries to never expire but may eventually be rotated " +
+ "out when the cache servers rotation policy automatically
expires entries.")
+ .required(false)
+ .addValidator(StandardValidators.TIME_PERIOD_VALIDATOR)
+ .build();
+
+ static final PropertyDescriptor RECORD_HASHING_ALGORITHM = new
PropertyDescriptor.Builder()
+ .name("record-hashing-algorithm")
+ .displayName("Record Hashing Algorithm")
+ .description("The algorithm used to hash the combined set of
resolved RecordPath values for cache storage.")
+ .allowableValues(
+ NONE_ALGORITHM_VALUE,
+ MD5_ALGORITHM_VALUE,
+ SHA1_ALGORITHM_VALUE,
+ SHA256_ALGORITHM_VALUE,
+ SHA512_ALGORITHM_VALUE
+ )
+ .defaultValue(SHA1_ALGORITHM_VALUE.getValue())
+ .expressionLanguageSupported(ExpressionLanguageScope.NONE)
+ .required(true)
+ .build();
+
+ static final PropertyDescriptor FILTER_TYPE = new
PropertyDescriptor.Builder()
+ .name("filter-type")
+ .displayName("Filter Type")
+ .description("The filter used to determine whether a record has
been seen before based on the matching RecordPath criteria.")
+ .allowableValues(
+ HASH_SET_VALUE,
+ BLOOM_FILTER_VALUE
+ )
+ .defaultValue(HASH_SET_VALUE.getValue())
+ .required(true)
+ .build();
+
+ static final PropertyDescriptor FILTER_CAPACITY_HINT = new
PropertyDescriptor.Builder()
+ .name("filter-capacity-hint")
+ .displayName("Filter Capacity Hint")
+ .description("An estimation of the total number of unique records
to be processed. " +
+ "The more accurate this number is will lead to fewer false
negatives on a BloomFilter.")
+ .defaultValue("25000")
+ .expressionLanguageSupported(ExpressionLanguageScope.NONE)
+ .addValidator(StandardValidators.INTEGER_VALIDATOR)
+ .required(true)
+ .build();
+
+ static final PropertyDescriptor BLOOM_FILTER_FPP = new
PropertyDescriptor.Builder()
+ .name("bloom-filter-certainty")
+ .displayName("Bloom Filter Certainty")
+ .description("The desired false positive probability when using
the BloomFilter type. " +
+ "Using a value of .05 for example, guarantees a
five-percent probability that the result is a false positive. " +
+ "The closer to 1 this value is set, the more precise the
result at the expense of more storage space utilization.")
+ .defaultValue("0.10")
+ .expressionLanguageSupported(ExpressionLanguageScope.NONE)
+ .addValidator(StandardValidators.NUMBER_VALIDATOR)
+ .required(false)
+ .build();
+
+
+ // RELATIONSHIPS
+
+ static final Relationship REL_DUPLICATE = new Relationship.Builder()
+ .name("duplicate")
+ .description("Records detected as duplicates in the FlowFile
content will be routed to this relationship")
+ .build();
+
+ static final Relationship REL_NON_DUPLICATE = new Relationship.Builder()
+ .name("non-duplicate")
+ .description("If the record was not found in the cache, it will be
routed to this relationship")
+ .build();
+
+ static final Relationship REL_ORIGINAL = new Relationship.Builder()
+ .name("original")
+ .description("The original input FlowFile is sent to this
relationship unless there is a fatal error in the processing.")
+ .build();
+
+ static final Relationship REL_FAILURE = new Relationship.Builder()
+ .name("failure")
+ .description("If unable to communicate with the cache, the
FlowFile will be penalized and routed to this relationship")
+ .build();
+
+ private List<PropertyDescriptor> descriptors;
+
+ private Set<Relationship> relationships;
+
+ private final Serializer<String> keySerializer = new StringSerializer();
+ private final Serializer<CacheValue> cacheValueSerializer = new
CacheValueSerializer();
+ private final Deserializer<CacheValue> cacheValueDeserializer = new
CacheValueDeserializer();
+
+ @Override
+ protected void init(final ProcessorInitializationContext context) {
+ final List<PropertyDescriptor> descriptors = new ArrayList<>();
+ descriptors.add(RECORD_READER);
+ descriptors.add(RECORD_WRITER);
+ descriptors.add(INCLUDE_ZERO_RECORD_FLOWFILES);
+ descriptors.add(CACHE_IDENTIFIER);
+ descriptors.add(CACHE_ENTRY_IDENTIFIER);
+ descriptors.add(AGE_OFF_DURATION);
+ descriptors.add(DISTRIBUTED_CACHE_SERVICE);
+ descriptors.add(RECORD_HASHING_ALGORITHM);
+ descriptors.add(FILTER_TYPE);
+ descriptors.add(FILTER_CAPACITY_HINT);
+ descriptors.add(BLOOM_FILTER_FPP);
+ this.descriptors = Collections.unmodifiableList(descriptors);
+
+ final Set<Relationship> relationships = new HashSet<>();
+ relationships.add(REL_DUPLICATE);
+ relationships.add(REL_NON_DUPLICATE);
+ relationships.add(REL_ORIGINAL);
+ relationships.add(REL_FAILURE);
+ this.relationships = Collections.unmodifiableSet(relationships);
+ }
+
+ @Override
+ public Set<Relationship> getRelationships() {
+ return this.relationships;
+ }
+
+ @Override
+ public final List<PropertyDescriptor> getSupportedPropertyDescriptors() {
+ return descriptors;
+ }
+
+ @Override
+ protected PropertyDescriptor getSupportedDynamicPropertyDescriptor(final
String propertyDescriptorName) {
+ return new PropertyDescriptor.Builder()
+ .name(propertyDescriptorName)
+ .description("Specifies a value to use from the record that
matches the RecordPath: '" +
+ propertyDescriptorName + "' which is used together
with other specified " +
+ "record path values to determine the uniqueness of a
record. " +
+ "Expression Language may reference variables
'field.name', 'field.type', and 'field.value' " +
+ "to access information about the field and the value
of the field being evaluated.")
+ .required(false)
+ .dynamic(true)
+
.expressionLanguageSupported(ExpressionLanguageScope.FLOWFILE_ATTRIBUTES)
+ .addValidator(new RecordPathPropertyNameValidator())
+ .build();
+ }
+
+ @Override
+ protected Collection<ValidationResult> customValidate(final
ValidationContext validationContext) {
+ RecordPathValidator recordPathValidator = new RecordPathValidator();
+ final List<ValidationResult> validationResults =
validationContext.getProperties().keySet().stream()
+ .filter(PropertyDescriptor::isDynamic)
+ .map(property -> recordPathValidator.validate(
+ "User-defined Properties",
+ property.getName(),
+ validationContext
+ )).collect(Collectors.toList());
+
+ if(validationContext.getProperty(BLOOM_FILTER_FPP).isSet()) {
+ final double falsePositiveProbability =
validationContext.getProperty(BLOOM_FILTER_FPP).asDouble();
+ if (falsePositiveProbability < 0 || falsePositiveProbability > 1) {
+ validationResults.add(
+ new ValidationResult.Builder()
+ .subject(BLOOM_FILTER_FPP.getName() + " out of
range.")
+
.input(String.valueOf(falsePositiveProbability))
+ .explanation("Valid values are 0.0 - 1.0
inclusive")
+ .valid(false).build());
+ }
+ }
+
+ if(validationContext.getProperty(CACHE_IDENTIFIER).asBoolean()) {
+
if(!validationContext.getProperty(DISTRIBUTED_CACHE_SERVICE).isSet())
+ validationResults.add(new ValidationResult.Builder()
+ .subject(DISTRIBUTED_CACHE_SERVICE.getName())
+ .explanation(DISTRIBUTED_CACHE_SERVICE.getName() + "
is required when " + CACHE_IDENTIFIER.getName() + " is true.")
+ .valid(false).build());
+
+ if(!validationContext.getProperty(CACHE_ENTRY_IDENTIFIER).isSet())
+ validationResults.add(new ValidationResult.Builder()
+ .subject(CACHE_ENTRY_IDENTIFIER.getName())
+ .explanation(CACHE_ENTRY_IDENTIFIER.getName() + " is
required when " + CACHE_IDENTIFIER.getName() + " is true.")
+ .valid(false).build());
+
+ if(!validationContext.getProperty(AGE_OFF_DURATION).isSet())
+ validationResults.add(new ValidationResult.Builder()
+ .subject(AGE_OFF_DURATION.getName())
+ .explanation(AGE_OFF_DURATION.getName() + " is
required when " + CACHE_IDENTIFIER.getName() + " is true.")
+ .valid(false).build());
+ }
+
+ return validationResults;
+ }
+
+ @OnScheduled
+ public void compileRecordPaths(final ProcessContext context) {
+ final List<String> recordPaths = new ArrayList<>();
+
+ recordPaths.addAll(context.getProperties().keySet().stream()
+ .filter(PropertyDescriptor::isDynamic)
+ .map(PropertyDescriptor::getName)
+ .collect(toList()));
+
+ recordPathCache = new RecordPathCache(recordPaths.size());
+ this.recordPaths = recordPaths;
+ }
+
+ @Override
+ public void onTrigger(final ProcessContext context, final ProcessSession
session) throws ProcessException {
+ final FlowFile flowFile = session.get();
+ if (flowFile == null) {
+ return;
+ }
+
+ final ComponentLog logger = getLogger();
+ final String cacheKey =
context.getProperty(CACHE_ENTRY_IDENTIFIER).evaluateAttributeExpressions(flowFile).getValue();
+
+ if (isBlank(cacheKey)) {
+ logger.error("FlowFile {} has no attribute for given Cache Entry
Identifier", new Object[]{flowFile});
+ session.transfer(session.penalize(flowFile), REL_FAILURE);
+ return;
+ }
+
+ FlowFile nonDuplicatesFlowFile = session.create(flowFile);
+ FlowFile duplicatesFlowFile = session.create(flowFile);
+
+ try {
+ final long now = System.currentTimeMillis();
+ final DistributedMapCacheClient cache =
context.getProperty(DISTRIBUTED_CACHE_SERVICE).asControllerService(DistributedMapCacheClient.class);
+
+ final boolean shouldCacheIdentifier =
context.getProperty(CACHE_IDENTIFIER).asBoolean();
+ final int filterCapacity =
context.getProperty(FILTER_CAPACITY_HINT).asInteger();
+ Serializable serializableFilter =
context.getProperty(FILTER_TYPE).getValue()
+ .equals(context.getProperty(HASH_SET_VALUE.getValue()))
+ ? new HashSet<String>(filterCapacity)
+ : BloomFilter.create(
+ Funnels.stringFunnel(Charset.defaultCharset()),
+ filterCapacity,
+ context.getProperty(BLOOM_FILTER_FPP).asDouble());
+
+ if(shouldCacheIdentifier && cache.containsKey(cacheKey,
keySerializer)) {
+ CacheValue cacheValue = cache.get(cacheKey, keySerializer,
cacheValueDeserializer);
+ Long durationMS =
context.getProperty(AGE_OFF_DURATION).asTimePeriod(TimeUnit.MILLISECONDS);
+
+ if(durationMS != null && (now >= cacheValue.getEntryTimeMS() +
durationMS)) {
+ boolean status = cache.remove(cacheKey, keySerializer);
+ logger.debug("Removal of expired cached entry with key {}
returned {}", new Object[]{cacheKey, status});
+ } else {
+ serializableFilter = cacheValue.getFilter();
+ }
+ }
+
+ final FilterWrapper filter =
FilterWrapper.create(serializableFilter);
+
+ final String recordHashingAlgorithm =
context.getProperty(RECORD_HASHING_ALGORITHM).getValue();
+ final MessageDigest messageDigest =
recordHashingAlgorithm.equals(NONE_ALGORITHM_VALUE.getValue())
+ ? null
+ : DigestUtils.getDigest(recordHashingAlgorithm);
+ final Boolean matchWholeRecord =
context.getProperties().keySet().stream().noneMatch(p -> p.isDynamic());
+
+ final RecordReaderFactory readerFactory =
context.getProperty(RECORD_READER).asControllerService(RecordReaderFactory.class);
+ final RecordSetWriterFactory writerFactory =
context.getProperty(RECORD_WRITER).asControllerService(RecordSetWriterFactory.class);
+ final RecordReader reader =
readerFactory.createRecordReader(flowFile.getAttributes(),
session.read(flowFile), logger);
+
+ final RecordSchema writeSchema =
writerFactory.getSchema(flowFile.getAttributes(), reader.getSchema());
+ final RecordSetWriter nonDuplicatesWriter =
writerFactory.createWriter(getLogger(), writeSchema,
session.write(nonDuplicatesFlowFile));
+ final RecordSetWriter duplicatesWriter =
writerFactory.createWriter(getLogger(), writeSchema,
session.write(duplicatesFlowFile));
+
+ nonDuplicatesWriter.beginRecordSet();
+ duplicatesWriter.beginRecordSet();
+ Record record;
+
+ while ((record = reader.nextRecord()) != null) {
+ String recordValue;
+
+ if (matchWholeRecord) {
+ recordValue = Joiner.on('~').join(record.getValues());
+ } else {
+ final List<String> fieldValues = new ArrayList<>();
+ for (final String recordPathText : recordPaths) {
+ final PropertyValue recordPathPropertyValue =
context.getProperty(recordPathText);
+ final RecordPath recordPath =
recordPathCache.getCompiled(recordPathText);
+ final RecordPathResult result =
recordPath.evaluate(record);
+ final List<FieldValue> selectedFields =
result.getSelectedFields().collect(Collectors.toList());
+
+
if(recordPathPropertyValue.isExpressionLanguagePresent()) {
+ final Map<String, String> fieldVariables = new
HashMap<>();
+ selectedFields.forEach(fieldVal -> {
+ fieldVariables.clear();
+ fieldVariables.put(FIELD_NAME,
fieldVal.getField().getFieldName());
+ fieldVariables.put(FIELD_VALUE,
DataTypeUtils.toString(fieldVal.getValue(), (String) null));
+ fieldVariables.put(FIELD_TYPE,
fieldVal.getField().getDataType().getFieldType().name());
+
+
fieldValues.add(recordPathPropertyValue.evaluateAttributeExpressions(flowFile,
fieldVariables).getValue());
+ });
+ } else {
+
fieldValues.add(recordPathPropertyValue.evaluateAttributeExpressions(flowFile).getValue());
+ }
+
+ fieldValues.addAll(selectedFields.stream()
+ .map(f ->
recordPathPropertyValue.evaluateAttributeExpressions(flowFile).getValue())
+ .collect(toList())
+ );
+ }
+ recordValue = Joiner.on('~').join(fieldValues);
+ }
+
+ final String recordHash = messageDigest != null
+ ?
Hex.encodeHexString(messageDigest.digest(getBytesUtf8(recordValue)))
+ : recordValue;
+
+ if(filter.contains(recordHash)) {
+ duplicatesWriter.write(record);
+ } else {
+ nonDuplicatesWriter.write(record);
+ }
+
+ filter.put(recordHash);
+ }
+
+ final boolean includeZeroRecordFlowFiles =
context.getProperty(INCLUDE_ZERO_RECORD_FLOWFILES).isSet()
+ ?
context.getProperty(INCLUDE_ZERO_RECORD_FLOWFILES).asBoolean()
+ : true;
+
+ // Route Non-Duplicates FlowFile
+ final WriteResult nonDuplicatesWriteResult =
nonDuplicatesWriter.finishRecordSet();
+ nonDuplicatesWriter.close();
+ Map<String, String> attributes = new HashMap<>();
+ attributes.putAll(nonDuplicatesWriteResult.getAttributes());
+ attributes.put("record.count",
String.valueOf(nonDuplicatesWriteResult.getRecordCount()));
+ attributes.put(CoreAttributes.MIME_TYPE.key(),
nonDuplicatesWriter.getMimeType());
+ nonDuplicatesFlowFile =
session.putAllAttributes(nonDuplicatesFlowFile, attributes);
+ logger.info("Successfully found {} unique records for {}", new
Object[] {nonDuplicatesWriteResult.getRecordCount(), nonDuplicatesFlowFile});
+
+ if(!includeZeroRecordFlowFiles &&
nonDuplicatesWriteResult.getRecordCount() == 0) {
+ session.remove(nonDuplicatesFlowFile);
+ } else {
+ session.transfer(nonDuplicatesFlowFile, REL_NON_DUPLICATE);
+ }
+
+ // Route Duplicates FlowFile
+ final WriteResult duplicatesWriteResult =
duplicatesWriter.finishRecordSet();
+ duplicatesWriter.close();
+ attributes.clear();
+ attributes.putAll(duplicatesWriteResult.getAttributes());
+ attributes.put("record.count",
String.valueOf(duplicatesWriteResult.getRecordCount()));
+ attributes.put(CoreAttributes.MIME_TYPE.key(),
duplicatesWriter.getMimeType());
+ duplicatesFlowFile =
session.putAllAttributes(nonDuplicatesFlowFile, attributes);
+ logger.info("Successfully found {} duplicate records for {}", new
Object[] {duplicatesWriteResult.getRecordCount(), nonDuplicatesFlowFile});
+
+ if(!includeZeroRecordFlowFiles &&
duplicatesWriteResult.getRecordCount() == 0) {
+ session.remove(duplicatesFlowFile);
+ } else {
+ session.transfer(duplicatesFlowFile, REL_DUPLICATE);
+ }
+
+ session.adjustCounter("Records Processed",
+ nonDuplicatesWriteResult.getRecordCount() +
duplicatesWriteResult.getRecordCount(), false);
+
+ if(shouldCacheIdentifier) {
+ CacheValue cacheValue = new CacheValue(serializableFilter,
now);
+ cache.put(cacheKey, cacheValue, keySerializer,
cacheValueSerializer);
+ }
+
+ session.transfer(flowFile, REL_ORIGINAL);
+
+ } catch (final Exception e) {
+ logger.error("Failed in detecting duplicate records.", e);
+ session.remove(duplicatesFlowFile);
+ session.remove(nonDuplicatesFlowFile);
+ session.transfer(flowFile, REL_FAILURE);
+ return;
+ }
+ }
+
+ private abstract static class FilterWrapper {
+ public static FilterWrapper create(Object filter) {
+ if(filter instanceof HashSet) {
+ return new HashSetFilterWrapper((HashSet<String>) filter);
+ } else {
+ return new BloomFilterWrapper((BloomFilter<String>) filter);
+ }
+ }
+ public abstract boolean contains(String value);
+ public abstract void put(String value);
+ }
+
+ private static class HashSetFilterWrapper extends FilterWrapper {
+
+ private final HashSet<String> filter;
+
+ public HashSetFilterWrapper(HashSet<String> filter) {
+ this.filter = filter;
+ }
+
+ @Override
+ public boolean contains(String value) {
+ return filter.contains(value);
+ }
+
+ @Override
+ public void put(String value) {
+ filter.add(value);
+ }
+ }
+
+ private static class BloomFilterWrapper extends FilterWrapper {
+
+ private final BloomFilter<String> filter;
+
+ public BloomFilterWrapper(BloomFilter<String> filter) {
+ this.filter = filter;
+ }
+
+ @Override
+ public boolean contains(String value) {
+ return filter.mightContain(value);
+ }
+
+ @Override
+ public void put(String value) {
+ filter.put(value);
+ }
+ }
+
+ private static class CacheValue implements Serializable {
+
+ private final Serializable filter;
+ private final long entryTimeMS;
+
+ public CacheValue(Serializable filter, long entryTimeMS) {
+ this.filter = filter;
+ this.entryTimeMS = entryTimeMS;
+ }
+
+ public Serializable getFilter() {
+ return filter;
+ }
+
+ public long getEntryTimeMS() {
+ return entryTimeMS;
+ }
+ }
+
+ private static class CacheValueSerializer implements
Serializer<CacheValue> {
+ @Override
+ public void serialize(CacheValue cacheValue, OutputStream
outputStream) throws SerializationException, IOException {
+ new ObjectOutputStream(outputStream).writeObject(cacheValue);
+ }
+ }
+
+ private static class CacheValueDeserializer implements
Deserializer<CacheValue> {
+ @Override
+ public CacheValue deserialize(byte[] bytes) throws
DeserializationException, IOException {
+ try {
+ return (CacheValue) new ObjectInputStream(new
ByteArrayInputStream(bytes)).readObject();
+ } catch (ClassNotFoundException e) {
+ e.printStackTrace();
+ }
+ return null;
+ }
+ }
+
+ private static class StringSerializer implements Serializer<String> {
+
+ @Override
+ public void serialize(final String value, final OutputStream out)
throws SerializationException, IOException {
+ out.write(value.getBytes(StandardCharsets.UTF_8));
+ }
+ }
+}
diff --git
a/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/resources/META-INF/services/org.apache.nifi.processor.Processor
b/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/resources/META-INF/services/org.apache.nifi.processor.Processor
index 19b5653..0324a5b 100644
---
a/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/resources/META-INF/services/org.apache.nifi.processor.Processor
+++
b/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/resources/META-INF/services/org.apache.nifi.processor.Processor
@@ -26,6 +26,7 @@ org.apache.nifi.processors.standard.CryptographicHashAttribute
org.apache.nifi.processors.standard.CryptographicHashContent
org.apache.nifi.processors.standard.DebugFlow
org.apache.nifi.processors.standard.DetectDuplicate
+org.apache.nifi.processors.standard.DetectDuplicateRecord
org.apache.nifi.processors.standard.DistributeLoad
org.apache.nifi.processors.standard.DuplicateFlowFile
org.apache.nifi.processors.standard.EncryptContent
diff --git
a/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/resources/docs/org/apache/nifi/processors/standard/DetectDuplicateRecord/additionalDetails.html
b/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/resources/docs/org/apache/nifi/processors/standard/DetectDuplicateRecord/additionalDetails.html
new file mode 100644
index 0000000..8f24302
--- /dev/null
+++
b/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/resources/docs/org/apache/nifi/processors/standard/DetectDuplicateRecord/additionalDetails.html
@@ -0,0 +1,96 @@
+<!DOCTYPE html>
+<html lang="en">
+<!--
+ 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.
+-->
+<head>
+ <meta charset="utf-8" />
+ <title>DetectDuplicateRecord</title>
+
+ <link rel="stylesheet" href="../../../../../css/component-usage.css"
type="text/css" />
+</head>
+<body>
+ <p>This processor makes use of the NiFi RecordPath Domain-Specific
Language (DSL) to allow the user to
+ indicate which field(s) in the Record should be used to determine
uniqueness. Users do this by adding
+ a User-defined Property to the Processor's configuration. The name of
the User-defined Property must
+ be the RecordPath text that should be evaluated against each Record.
All of the values identified by
+ the record paths are hashed together in the order they were specified
to derive a unique value
+ representing a single Record. This hashed value is then optionally
stored in the cache for
+ subsequent FlowFile processing.</p>
+ <p>If a RecordPath is given and does not match any field in an input
Record, that Property will be
+ skipped and all other Properties will still be evaluated. If the
RecordPath matches no fields the
+ record will be routed to the 'non-duplicate' relationship. If no
User-defined Properties specifying
+ a RecordPath are defined, all field values of the record will be
used.</p>
+ <p>After all RecordPath values are resolved, the values are combined in
the order of the User-defined
+ Properties and hashed together using the specified hashing algorithm,
ensuring constant space per record.</p>
+
+ <h2>Choosing a Filter Type</h2>
+ <p></p>
+ <h2>Examples</h2>
+ <p>Below, we lay out some examples in order to provide clarity about the
Processor's behavior.
+ For all of the examples below, consider the example to operate on the
following set of 2 (JSON) records:</p>
+ <code>
+ <pre>
+ [
+ {
+ "id": 1,
+ "name": "John",
+ "gender": "M",
+ },
+ {
+ "id": 2,
+ "name": "Susan",
+ "gender": "F",
+ },
+ {
+ "id": 3,
+ "name": "Megan",
+ "gender": "F",
+ },
+ {
+ "id": 2,
+ "name": "Jerry",
+ "gender": "M",
+ },
+ ]
+ </pre>
+ </code>
+
+ <h3>Example 1: Matching on a Single Record Field</h3>
+ <p>A valid property RecordPath mapping would be <em>/id =>
${field.value}</em>.</p>
+ <p>For a record set with JSON like that, the records will be evaluated
against the <code>id</code> field
+ to determine uniqueness.</p>
+ <ul>
+ <li><strong>non-duplicate:</strong> John, Susan, Megan</li>
+ <li><strong>duplicate:</strong> Jerry</li>
+ </ul>
+
+ <h3>Example 2: Matching on Multiple Record Fields</h3>
+ <p>If we wanted to define these records to be unique based on the
<code>id</code> and <code>gender</code> fields,
+ we would specify two RecordPath mappings: <em>/id =>
${field.value}</em> and <em>/gender => ${field.value}</em>.</p>
+ <ul>
+ <li><strong>non-duplicate:</strong> John, Susan, Megan, Jerry</li>
+ <li><strong>duplicate:</strong> <em>None</em></li>
+ </ul>
+
+ <h3>Example 3: Matching on All Record Fields</h3>
+ <p>Do not define any RecordPath properties in the processor to use all
fields by default.</p>
+ <p>For a record set with JSON like that, the records will be evaluated
against the <code>id, name, gender</code>
+ fields to determine uniqueness.</p>
+ <ul>
+ <li><strong>non-duplicate:</strong> John, Susan, Megan, Jerry</li>
+ <li><strong>duplicate:</strong> <em>None</em></li>
+ </ul>
+</body>
+</html>
\ No newline at end of file
diff --git
a/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/test/groovy/org/apache/nifi/processors/standard/MockCacheService.groovy
b/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/test/groovy/org/apache/nifi/processors/standard/MockCacheService.groovy
new file mode 100644
index 0000000..d0f5d09
--- /dev/null
+++
b/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/test/groovy/org/apache/nifi/processors/standard/MockCacheService.groovy
@@ -0,0 +1,77 @@
+/*
+ * 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.processors.standard
+
+import org.apache.nifi.controller.AbstractControllerService
+import org.apache.nifi.distributed.cache.client.Deserializer
+import org.apache.nifi.distributed.cache.client.DistributedMapCacheClient
+import org.apache.nifi.distributed.cache.client.Serializer
+
+class MockCacheService extends AbstractControllerService implements
DistributedMapCacheClient {
+ def map = [:]
+
+ @Override
+ def <K, V> boolean putIfAbsent(K k, V v, Serializer<K> serializer,
Serializer<V> serializer1) throws IOException {
+ def retVal = map.containsKey(k)
+ if (retVal) {
+ false
+ } else {
+ map[k] = v
+ true
+ }
+ }
+
+ @Override
+ def <K, V> V getAndPutIfAbsent(K k, V v, Serializer<K> serializer,
Serializer<V> serializer1, Deserializer<V> deserializer) throws IOException {
+ return null
+ }
+
+ @Override
+ def <K> boolean containsKey(K k, Serializer<K> serializer) throws
IOException {
+ return map.containsKey(k)
+ }
+
+ @Override
+ def <K, V> void put(K k, V v, Serializer<K> serializer, Serializer<V>
serializer1) throws IOException {
+
+ }
+
+ @Override
+ def <K, V> V get(K k, Serializer<K> serializer, Deserializer<V>
deserializer) throws IOException {
+ return null
+ }
+
+ @Override
+ void close() throws IOException {
+
+ }
+
+ @Override
+ def <K> boolean remove(K k, Serializer<K> serializer) throws IOException {
+ return false
+ }
+
+ @Override
+ long removeByPattern(String s) throws IOException {
+ return 0
+ }
+
+ void assertContains(String key, String value) {
+ assert map.containsKey(key) && map[key] == value
+ }
+}
\ No newline at end of file
diff --git
a/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/test/java/org/apache/nifi/processors/standard/TestDetectDuplicateRecord.java
b/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/test/java/org/apache/nifi/processors/standard/TestDetectDuplicateRecord.java
new file mode 100644
index 0000000..6855857
--- /dev/null
+++
b/nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/test/java/org/apache/nifi/processors/standard/TestDetectDuplicateRecord.java
@@ -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.processors.standard;
+
+import org.apache.nifi.reporting.InitializationException;
+import org.apache.nifi.serialization.record.MockRecordParser;
+import org.apache.nifi.serialization.record.MockRecordWriter;
+import org.apache.nifi.serialization.record.RecordFieldType;
+import org.apache.nifi.util.*;
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.nifi.processors.standard.DetectDuplicateRecord.*;
+import static org.junit.Assert.assertEquals;
+
+public class TestDetectDuplicateRecord {
+
+ private TestRunner runner;
+ private MockCacheService cache;
+ private MockRecordParser reader;
+ private MockRecordWriter writer;
+
+ @BeforeClass
+ public static void beforeClass() {
+ System.setProperty("org.slf4j.simpleLogger.defaultLogLevel", "info");
+ System.setProperty("org.slf4j.simpleLogger.showDateTime", "true");
+ System.setProperty("org.slf4j.simpleLogger.log.nifi.io.nio", "debug");
+
System.setProperty("org.slf4j.simpleLogger.log.nifi.processors.standard.DetectDuplicateRecord",
"debug");
+
System.setProperty("org.slf4j.simpleLogger.log.nifi.processors.standard.TestDetectDuplicateRecord",
"debug");
+ }
+
+ @Before
+ public void setup() throws InitializationException {
+ runner = TestRunners.newTestRunner(DetectDuplicateRecord.class);
+
+ // RECORD_READER, RECORD_WRITER
+ reader = new MockRecordParser();
+ writer = new MockRecordWriter("header", false);
+
+ runner.addControllerService("reader", reader);
+ runner.enableControllerService(reader);
+ runner.addControllerService("writer", writer);
+ runner.enableControllerService(writer);
+
+ runner.setProperty(RECORD_READER, "reader");
+ runner.setProperty(RECORD_WRITER, "writer");
+
+ reader.addSchemaField("firstName", RecordFieldType.STRING);
+ reader.addSchemaField("middleName", RecordFieldType.STRING);
+ reader.addSchemaField("lastName", RecordFieldType.STRING);
+
+ // INCLUDE_ZERO_RECORD_FLOWFILES
+ runner.setProperty(INCLUDE_ZERO_RECORD_FLOWFILES, "true");
+
+ // CACHE_IDENTIFIER
+ runner.setProperty(CACHE_IDENTIFIER, "true");
+
+ // DISTRIBUTED_CACHE_SERVICE
+ cache = new MockCacheService();
+ runner.addControllerService("cache", cache);
+ runner.setProperty(DISTRIBUTED_CACHE_SERVICE, "cache");
+ runner.enableControllerService(cache);
+
+ // CACHE_ENTRY_IDENTIFIER
+ final Map<String, String> props = new HashMap<>();
+ props.put("hash.value", "1000");
+ runner.enqueue(new byte[]{}, props);
+
+ // AGE_OFF_DURATION
+ runner.setProperty(AGE_OFF_DURATION, "48 hours");
+
+ runner.assertValid();
+ }
+
+ @Test
+ public void testDetectDuplicatesHashSet() {
+ runner.setProperty(FILTER_TYPE, HASH_SET_VALUE);
+ runner.setProperty("/middleName", "${field.value}");
+ reader.addRecord("John", "Q", "Smith");
+ reader.addRecord("John", "Q", "Smith");
+ reader.addRecord("Jane", "X", "Doe");
+
+ runner.enqueue("");
+ runner.run();
+
+ doCountTests(0, 1, 1, 1, 2, 1);
+ }
+
+ @Test
+ public void testDetectDuplicatesBloomFilter() {
+ runner.setProperty(FILTER_TYPE, BLOOM_FILTER_VALUE);
+ runner.setProperty(BLOOM_FILTER_FPP, "0.10");
+ runner.setProperty("/middleName", "${field.value}");
+ reader.addRecord("John", "Q", "Smith");
+ reader.addRecord("John", "Q", "Smith");
+ reader.addRecord("Jane", "X", "Doe");
+
+ runner.enqueue("");
+ runner.run();
+
+ doCountTests(0, 1, 1, 1, 2, 1);
+ }
+
+ @Test
+ public void testNoDuplicatesHashSet() {
+ runner.setProperty(FILTER_TYPE, HASH_SET_VALUE);
+ runner.setProperty("/middleName", "${field.value}");
+ reader.addRecord("John", "Q", "Smith");
+ reader.addRecord("Jack", "Z", "Brown");
+ reader.addRecord("Jane", "X", "Doe");
+
+ runner.enqueue("");
+ runner.run();
+
+ doCountTests(0, 1, 1, 1, 3, 0);
+ }
+
+ @Test
+ public void testNoDuplicatesBloomFilter() {
+ runner.setProperty(FILTER_TYPE, BLOOM_FILTER_VALUE);
+ runner.setProperty(BLOOM_FILTER_FPP, "0.10");
+ runner.setProperty("/middleName", "${field.value}");
+ reader.addRecord("John", "Q", "Smith");
+ reader.addRecord("Jack", "Z", "Brown");
+ reader.addRecord("Jane", "X", "Doe");
+
+ runner.enqueue("");
+ runner.run();
+
+ doCountTests(0, 1, 1, 1, 3, 0);
+ }
+
+ @Test
+ public void testAllDuplicates() {
+ reader.addRecord("John", "Q", "Smith");
+ reader.addRecord("John", "Q", "Smith");
+ reader.addRecord("John", "Q", "Smith");
+
+ runner.enqueue("");
+ runner.run();
+
+ doCountTests(0, 1, 1, 0, 1, 2);
+ }
+
+ @Test
+ public void testAllUnique() {
+ reader.addRecord("John", "Q", "Smith");
+ reader.addRecord("Jack", "Z", "Brown");
+ reader.addRecord("Jane", "X", "Doe");
+
+ runner.enqueue("");
+ runner.run();
+
+ doCountTests(0, 1, 1, 1, 3, 0);
+ }
+
+
+
+ @Test
+ public void testCacheValueFromRecordPath() {
+ runner.setProperty(CACHE_ENTRY_IDENTIFIER, "Users");
+ reader.addRecord("John", "Q", "Smith");
+ reader.addRecord("Jack", "Z", "Brown");
+ reader.addRecord("Jane", "X", "Doe");
+
+ runner.enqueue("");
+ runner.run();
+
+ doCountTests(0, 1, 1, 1, 2, 1);
+
+ cache.assertContains("KEY", "VALUE"); // TODO: Get the tests running
so you can see what the key/value is in serialized form
+ }
+
+ void doCountTests(int failure, int original, int duplicates, int
notDuplicates, int notDupeCount, int dupeCount) {
+ runner.assertTransferCount(REL_DUPLICATE, duplicates);
+ runner.assertTransferCount(REL_NON_DUPLICATE, notDuplicates);
+ runner.assertTransferCount(REL_ORIGINAL, original);
+ runner.assertTransferCount(REL_FAILURE, failure);
+
+ List<MockFlowFile> duplicateFlowFile =
runner.getFlowFilesForRelationship(REL_DUPLICATE);
+ if (duplicateFlowFile != null) {
+ assertEquals(String.valueOf(dupeCount),
duplicateFlowFile.get(0).getAttribute("record.count"));
+ }
+
+ List<MockFlowFile> nonDuplicateFlowFile =
runner.getFlowFilesForRelationship(REL_NON_DUPLICATE);
+ if (nonDuplicateFlowFile != null) {
+ assertEquals(String.valueOf(notDupeCount),
nonDuplicateFlowFile.get(0).getAttribute("record.count"));
+ }
+ }
+}
