mattyb149 commented on a change in pull request #2861: NIFI-5248 Added new Elasticsearch json and record processors. URL: https://github.com/apache/nifi/pull/2861#discussion_r341663074
########## File path: nifi-nar-bundles/nifi-elasticsearch-bundle/nifi-elasticsearch-restapi-processors/src/main/java/org/apache/nifi/processors/elasticsearch/PutElasticsearchRecord.java ########## @@ -0,0 +1,354 @@ +/* + * 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.elasticsearch; + +import com.fasterxml.jackson.databind.ObjectMapper; +import com.fasterxml.jackson.databind.SerializationFeature; +import org.apache.nifi.annotation.behavior.InputRequirement; +import org.apache.nifi.annotation.documentation.CapabilityDescription; +import org.apache.nifi.annotation.documentation.Tags; +import org.apache.nifi.annotation.lifecycle.OnScheduled; +import org.apache.nifi.components.PropertyDescriptor; +import org.apache.nifi.components.Validator; +import org.apache.nifi.elasticsearch.ElasticSearchClientService; +import org.apache.nifi.elasticsearch.ElasticsearchError; +import org.apache.nifi.elasticsearch.IndexOperationRequest; +import org.apache.nifi.elasticsearch.IndexOperationResponse; +import org.apache.nifi.expression.ExpressionLanguageScope; +import org.apache.nifi.flowfile.FlowFile; +import org.apache.nifi.processor.AbstractProcessor; +import org.apache.nifi.processor.ProcessContext; +import org.apache.nifi.processor.ProcessSession; +import org.apache.nifi.processor.Relationship; +import org.apache.nifi.processor.exception.ProcessException; +import org.apache.nifi.processor.util.StandardValidators; +import org.apache.nifi.processors.elasticsearch.api.BulkOperation; +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.RecordPathValidator; +import org.apache.nifi.serialization.RecordReader; +import org.apache.nifi.serialization.RecordReaderFactory; +import org.apache.nifi.serialization.RecordSetWriter; +import org.apache.nifi.serialization.RecordSetWriterFactory; +import org.apache.nifi.serialization.record.Record; +import org.apache.nifi.serialization.record.RecordFieldType; +import org.apache.nifi.serialization.record.util.DataTypeUtils; +import org.apache.nifi.util.StringUtils; + +import java.io.InputStream; +import java.io.OutputStream; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collections; +import java.util.HashMap; +import java.util.HashSet; +import java.util.List; +import java.util.Map; +import java.util.Optional; +import java.util.Set; + +@InputRequirement(InputRequirement.Requirement.INPUT_REQUIRED) +@Tags({"json", "elasticsearch", "elasticsearch5", "elasticsearch6", "put", "index", "record"}) +@CapabilityDescription("A record-aware Elasticsearch put processor that uses the official Elastic REST client libraries.") +public class PutElasticsearchRecord extends AbstractProcessor implements ElasticsearchRestProcessor { + static final PropertyDescriptor RECORD_READER = new PropertyDescriptor.Builder() + .name("put-es-record-reader") + .displayName("Record Reader") + .description("The record reader to use for reading incoming records from flowfiles.") + .identifiesControllerService(RecordReaderFactory.class) + .required(true) + .build(); + + static final PropertyDescriptor BATCH_SIZE = new PropertyDescriptor.Builder() + .name("put-es-record-batch-size") + .displayName("Batch Size") + .description("The number of records to send over in a single batch.") + .defaultValue("100") + .addValidator(StandardValidators.POSITIVE_INTEGER_VALIDATOR) + .expressionLanguageSupported(ExpressionLanguageScope.FLOWFILE_ATTRIBUTES) + .required(true) + .build(); + + static final PropertyDescriptor ID_RECORD_PATH = new PropertyDescriptor.Builder() + .name("put-es-record-id-path") + .displayName("ID Record Path") + .description("A record path expression to retrieve the ID field for use with Elasticsearch. If left blank " + + "the ID will be automatically generated by Elasticsearch.") + .addValidator(new RecordPathValidator()) + .expressionLanguageSupported(ExpressionLanguageScope.FLOWFILE_ATTRIBUTES) + .build(); + + static final PropertyDescriptor INDEX_RECORD_PATH = new PropertyDescriptor.Builder() + .name("put-es-record-index-record-path") + .displayName("Index Record Path") + .description("A record path expression to retrieve the index field for use with Elasticsearch. If left blank " + + "the index will be determined using the main index property.") + .addValidator(new RecordPathValidator()) + .required(false) + .expressionLanguageSupported(ExpressionLanguageScope.FLOWFILE_ATTRIBUTES) + .build(); + + static final PropertyDescriptor TYPE_RECORD_PATH = new PropertyDescriptor.Builder() + .name("put-es-record-type-record-path") + .displayName("Type Record Path") + .description("A record path expression to retrieve the type field for use with Elasticsearch. If left blank " + + "the type will be determined using the main type property.") + .addValidator(new RecordPathValidator()) + .required(false) + .expressionLanguageSupported(ExpressionLanguageScope.FLOWFILE_ATTRIBUTES) + .build(); + + static final PropertyDescriptor ERROR_RECORD_WRITER = new PropertyDescriptor.Builder() + .name("put-es-record-error-writer") + .displayName("Error Record Writer") + .displayName("If this configuration property is set, the response from Elasticsearch will be examined for failed records " + + "and the failed records will be written to a record set with this record writer service and sent to the \"errors\" " + + "relationship.") + .identifiesControllerService(RecordSetWriterFactory.class) + .addValidator(Validator.VALID) + .required(false) + .build(); + + static final List<PropertyDescriptor> DESCRIPTORS = Collections.unmodifiableList(Arrays.asList( + INDEX, TYPE, CLIENT_SERVICE, RECORD_READER, BATCH_SIZE, ID_RECORD_PATH, INDEX_RECORD_PATH, TYPE_RECORD_PATH, + LOG_ERROR_RESPONSES, ERROR_RECORD_WRITER + )); + static final Set<Relationship> RELATIONSHIPS = Collections.unmodifiableSet(new HashSet<>(Arrays.asList( + REL_SUCCESS, REL_FAILURE, REL_RETRY, REL_FAILED_RECORDS + ))); + + @Override + public Set<Relationship> getRelationships() { + return RELATIONSHIPS; + } + + @Override + public final List<PropertyDescriptor> getSupportedPropertyDescriptors() { + return DESCRIPTORS; + } + + private RecordReaderFactory readerFactory; + private RecordPathCache recordPathCache; + private ElasticSearchClientService clientService; + private RecordSetWriterFactory writerFactory; + private boolean logErrors; + + @OnScheduled + public void onScheduled(ProcessContext context) { + this.readerFactory = context.getProperty(RECORD_READER).asControllerService(RecordReaderFactory.class); + this.clientService = context.getProperty(CLIENT_SERVICE).asControllerService(ElasticSearchClientService.class); + this.recordPathCache = new RecordPathCache(16); + this.writerFactory = context.getProperty(ERROR_RECORD_WRITER).asControllerService(RecordSetWriterFactory.class); + this.logErrors = context.getProperty(LOG_ERROR_RESPONSES).asBoolean(); + } + + + @Override + public void onTrigger(ProcessContext context, ProcessSession session) throws ProcessException { + FlowFile input = session.get(); + if (input == null) { + return; + } + + final String index = context.getProperty(INDEX).evaluateAttributeExpressions(input).getValue(); + final String type = context.getProperty(TYPE).evaluateAttributeExpressions(input).getValue(); + final String idPath = context.getProperty(ID_RECORD_PATH).isSet() + ? context.getProperty(ID_RECORD_PATH).evaluateAttributeExpressions(input).getValue() + : null; + final String indexPath = context.getProperty(INDEX_RECORD_PATH).isSet() + ? context.getProperty(INDEX_RECORD_PATH).evaluateAttributeExpressions(input).getValue() + : null; + final String typePath = context.getProperty(TYPE_RECORD_PATH).isSet() + ? context.getProperty(TYPE_RECORD_PATH).evaluateAttributeExpressions(input).getValue() + : null; + + RecordPath path = idPath != null ? recordPathCache.getCompiled(idPath) : null; + RecordPath iPath = indexPath != null ? recordPathCache.getCompiled(indexPath) : null; + RecordPath tPath = typePath != null ? recordPathCache.getCompiled(typePath) : null; + + int batchSize = context.getProperty(BATCH_SIZE).evaluateAttributeExpressions(input).asInteger(); + List<FlowFile> badRecords = new ArrayList<>(); + + try (final InputStream inStream = session.read(input); + final RecordReader reader = readerFactory.createRecordReader(input, inStream, getLogger())) { + Record record; + List<IndexOperationRequest> operationList = new ArrayList<>(); + List<Record> originals = new ArrayList<>(); + + while ((record = reader.nextRecord()) != null) { + final String idx = getFromRecordPath(record, iPath, index); + final String t = getFromRecordPath(record, tPath, type); + final IndexOperationRequest.Operation o = IndexOperationRequest.Operation.Index; + final String id = path != null ? getFromRecordPath(record, path, null) : null; + + Map<String, Object> contentMap = (Map<String, Object>) DataTypeUtils.convertRecordFieldtoObject(record, RecordFieldType.RECORD.getRecordDataType(record.getSchema())); + + removeEmpty(contentMap); + + operationList.add(new IndexOperationRequest(idx, t, id, contentMap, o)); + originals.add(record); + + if (operationList.size() == batchSize) { + BulkOperation bundle = new BulkOperation(operationList, originals, reader.getSchema()); + FlowFile bad = indexDocuments(bundle, session, input); + if (bad != null) { + badRecords.add(bad); + } + + operationList.clear(); + originals.clear(); + } + } + + if (operationList.size() > 0) { + BulkOperation bundle = new BulkOperation(operationList, originals, reader.getSchema()); + FlowFile bad = indexDocuments(bundle, session, input); + if (bad != null) { + badRecords.add(bad); + } + } + + session.transfer(input, REL_SUCCESS); + } catch (ElasticsearchError ese) { + String msg = String.format("Encountered a server-side problem with Elasticsearch. %s", + ese.isElastic() ? "Moving to retry." : "Moving to failure"); + getLogger().error(msg, ese); + Relationship rel = ese.isElastic() ? REL_RETRY : REL_FAILURE; Review comment: Should retry flowfiles be penalized? I think that's the common pattern for external (but retryable) issues ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services
