joewitt commented on a change in pull request #3317: NIFI-6047 Add DetectDuplicateRecord Processor URL: https://github.com/apache/nifi/pull/3317#discussion_r258009986
########## File path: nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/DetectDuplicateRecord.java ########## @@ -0,0 +1,620 @@ +/* + * 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.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 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 = "Caches records from each incoming FlowFile and determines if the cached record has " + + "already been seen. The name of user-defined properties determines the RecordPath values used to " + + "determine if a record is unique. If no user-defined properties are present, the entire record is " + + "used as the input to determine uniqueness. All duplicate records are routed to 'duplicate'. " + + "If the record is not determined to be a duplicate, the Processor routes the record to 'non-duplicate'.") +@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 cached record has " + + "already been seen. The name of user-defined properties determines the RecordPath values used to " + + "determine if a record is unique. If no user-defined properties are present, the entire record is " + + "used as the input to determine uniqueness. All duplicate records are routed to 'duplicate'. " + + "If the record is not determined to be a duplicate, the Processor routes the record to 'non-duplicate'." +) +@ReadsAttributes({@ReadsAttribute(attribute="", description="")}) +@WritesAttributes({ + @WritesAttribute(attribute = "record.count", description = "The number of records in the FlowFile") +}) +@DynamicProperty( + name = "RecordPath", + value = "User-defined property values are ignored", + 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 volatile RecordPathCache recordPathCache; + private volatile List<String> recordPaths; + + // VALUES + + 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 ENTIRE_RECORD_VALUE = new AllowableValue("entire-record", "Entire Record", Review comment: These should be removed unless they're to be used ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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