[jira] [Commented] (NIFI-4479) Add a DeleteMongo processor

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/NIFI-4479?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16286889#comment-16286889 ] 

ASF GitHub Bot commented on NIFI-4479:
--------------------------------------

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

    https://github.com/apache/nifi/pull/2295#discussion_r156244268
  
    --- Diff: nifi-nar-bundles/nifi-mongodb-bundle/nifi-mongodb-processors/src/main/java/org/apache/nifi/processors/mongodb/DeleteMongo.java ---
    @@ -0,0 +1,151 @@
    +/*
    + * 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.mongodb;
    +
    +import com.mongodb.WriteConcern;
    +import com.mongodb.client.MongoCollection;
    +import com.mongodb.client.result.DeleteResult;
    +import org.apache.nifi.annotation.behavior.EventDriven;
    +import org.apache.nifi.annotation.documentation.CapabilityDescription;
    +import org.apache.nifi.annotation.documentation.Tags;
    +import org.apache.nifi.components.AllowableValue;
    +import org.apache.nifi.components.PropertyDescriptor;
    +import org.apache.nifi.components.Validator;
    +import org.apache.nifi.flowfile.FlowFile;
    +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.bson.Document;
    +
    +import java.io.ByteArrayOutputStream;
    +import java.util.ArrayList;
    +import java.util.Collections;
    +import java.util.HashSet;
    +import java.util.List;
    +import java.util.Set;
    +
    +@EventDriven
    +@Tags({ "delete", "mongo", "mongodb" })
    +@CapabilityDescription(
    +        "Executes a delete query against a MongoDB collection. The query is provided in the body of the flowfile " +
    +        "and the user can select whether it will delete one or many documents that match it."
    +)
    +public class DeleteMongo extends AbstractMongoProcessor {
    +
    +    private final static Set<Relationship> relationships;
    +    private final static List<PropertyDescriptor> propertyDescriptors;
    +
    +    static final AllowableValue DELETE_ONE = new AllowableValue("one", "Delete One", "Delete only the first document that matches the query.");
    +    static final AllowableValue DELETE_MANY = new AllowableValue("many", "Delete Many", "Delete every document that matches the query.");
    +
    +    static final AllowableValue YES_FAIL = new AllowableValue("true", "True", "Fail when no documents are deleted.");
    +    static final AllowableValue NO_FAIL  = new AllowableValue("false", "False", "Do not fail when nothing is deleted.");
    +
    +    static final PropertyDescriptor DELETE_MODE = new PropertyDescriptor.Builder()
    +            .name("delete-mongo-delete-mode")
    +            .displayName("Delete Mode")
    +            .description("Choose between deleting one document by query or many documents by query.")
    +            .allowableValues(DELETE_ONE, DELETE_MANY)
    +            .defaultValue("one")
    --- End diff --
    
    Should we be displaying the friendly name here?


> Add a DeleteMongo processor
> ---------------------------
>
>                 Key: NIFI-4479
>                 URL: https://issues.apache.org/jira/browse/NIFI-4479
>             Project: Apache NiFi
>          Issue Type: New Feature
>            Reporter: Matt Burgess
>            Assignee: Mike Thomsen
>            Priority: Minor
>
> Currently there is no processor to remove documents from MongoDB, instead the REST API must be used via InvokeHttp for example.  It would be nice to have a processor to remove documents from MongoDB. It could be record-aware or not (or there could be two different versions), depending on what makes the most sense and is the most useful.



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