[GitHub] nifi pull request #2615: NIFI-5051 Created ElasticSearch lookup service.

[mattyb149 <gi...@git.apache.org>]

Github user mattyb149 commented on a diff in the pull request:

    https://github.com/apache/nifi/pull/2615#discussion_r189676414
  
    --- Diff: nifi-nar-bundles/nifi-elasticsearch-bundle/nifi-elasticsearch-client-service/src/main/java/org/apache/nifi/elasticsearch/ElasticSearchLookupService.java ---
    @@ -0,0 +1,253 @@
    +/*
    + * 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.elasticsearch;
    +
    +import com.fasterxml.jackson.databind.ObjectMapper;
    +import org.apache.nifi.annotation.lifecycle.OnEnabled;
    +import org.apache.nifi.components.PropertyDescriptor;
    +import org.apache.nifi.components.Validator;
    +import org.apache.nifi.controller.ConfigurationContext;
    +import org.apache.nifi.expression.ExpressionLanguageScope;
    +import org.apache.nifi.lookup.LookupFailureException;
    +import org.apache.nifi.lookup.LookupService;
    +import org.apache.nifi.processor.util.StandardValidators;
    +import org.apache.nifi.reporting.InitializationException;
    +import org.apache.nifi.schema.access.SchemaNotFoundException;
    +import org.apache.nifi.serialization.SchemaRegistryService;
    +import org.apache.nifi.serialization.SimpleRecordSchema;
    +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.type.RecordDataType;
    +
    +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 java.util.Optional;
    +import java.util.Set;
    +import java.util.stream.Collectors;
    +
    +public class ElasticSearchLookupService extends SchemaRegistryService implements LookupService {
    +    public static final PropertyDescriptor CLIENT_SERVICE = new PropertyDescriptor.Builder()
    +        .name("el-rest-client-service")
    +        .displayName("Client Service")
    +        .description("An ElasticSearch client service to use for running queries.")
    +        .identifiesControllerService(ElasticSearchClientService.class)
    +        .required(true)
    +        .build();
    +    public static final PropertyDescriptor INDEX = new PropertyDescriptor.Builder()
    +        .name("el-lookup-index")
    +        .displayName("Index")
    +        .description("The name of the index to read from")
    +        .required(true)
    +        .expressionLanguageSupported(ExpressionLanguageScope.VARIABLE_REGISTRY)
    +        .addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
    +        .build();
    +
    +    public static final PropertyDescriptor TYPE = new PropertyDescriptor.Builder()
    +        .name("el-lookup-type")
    +        .displayName("Type")
    +        .description("The type of this document (used by Elasticsearch for indexing and searching)")
    +        .required(false)
    +        .expressionLanguageSupported(ExpressionLanguageScope.VARIABLE_REGISTRY)
    +        .addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
    +        .build();
    +
    +
    +    public static final PropertyDescriptor RECORD_SCHEMA_NAME = new PropertyDescriptor.Builder()
    --- End diff --
    
    You don't need this property anymore, as you get one from SchemaRegistryService


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