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From cammachusa <...@git.apache.org>
Subject [GitHub] nifi pull request #2020: [NiFi-3973] Add PutKudu Processor for ingesting dat...
Date Thu, 03 Aug 2017 21:00:21 GMT
Github user cammachusa commented on a diff in the pull request:

    https://github.com/apache/nifi/pull/2020#discussion_r131258450
  
    --- Diff: nifi-nar-bundles/nifi-kudu-bundle/nifi-kudu-processors/src/main/java/org/apache/nifi/processors/kudu/PutKudu.java
---
    @@ -0,0 +1,135 @@
    +/*
    + * 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.kudu;
    +
    +import org.apache.kudu.Schema;
    +import org.apache.kudu.Type;
    +import org.apache.kudu.client.Insert;
    +import org.apache.kudu.client.Upsert;
    +import org.apache.kudu.client.PartialRow;
    +import org.apache.kudu.client.KuduTable;
    +import org.apache.kudu.client.Operation;
    +
    +import org.apache.nifi.annotation.behavior.EventDriven;
    +import org.apache.nifi.annotation.behavior.InputRequirement;
    +import org.apache.nifi.annotation.behavior.SupportsBatching;
    +import org.apache.nifi.annotation.documentation.CapabilityDescription;
    +import org.apache.nifi.annotation.documentation.Tags;
    +import org.apache.nifi.components.PropertyDescriptor;
    +import org.apache.nifi.processor.Relationship;
    +import org.apache.nifi.serialization.record.Record;
    +
    +import java.util.ArrayList;
    +import java.util.HashSet;
    +import java.util.List;
    +import java.util.Set;
    +
    +@EventDriven
    +@SupportsBatching
    +@InputRequirement(InputRequirement.Requirement.INPUT_REQUIRED)
    +@Tags({"put", "database", "NoSQL", "kudu", "HDFS"})
    +@CapabilityDescription("Reads records from an incoming FlowFile using the provided Record
Reader, and writes those records " +
    +        "to the specified Kudu's table. The schema for the table must be provided in
the processor properties or from your source." +
    +        " If any error occurs while reading records from the input, or writing records
to Kudu, the FlowFile will be routed to failure")
    +
    +public class PutKudu extends AbstractKudu {
    +
    +    @Override
    +    protected List<PropertyDescriptor> getSupportedPropertyDescriptors() {
    +        final List<PropertyDescriptor> properties = new ArrayList<>();
    +        properties.add(KUDU_MASTERS);
    +        properties.add(TABLE_NAME);
    +        properties.add(SKIP_HEAD_LINE);
    +        properties.add(RECORD_READER);
    +        properties.add(INSERT_OPERATION);
    +
    +        return properties;
    +    }
    +
    +    @Override
    +    public Set<Relationship> getRelationships() {
    +        final Set<Relationship> rels = new HashSet<>();
    +        rels.add(REL_SUCCESS);
    +        rels.add(REL_FAILURE);
    +        return rels;
    +    }
    +
    +    @Override
    +    protected Upsert upsertRecordToKudu(KuduTable kuduTable, Record record, List<String>
fieldNames) throws IllegalStateException, Exception {
    +        Upsert upsert = kuduTable.newUpsert();
    +        this.insert(kuduTable, upsert, record, fieldNames);
    +        return upsert;
    +    }
    +
    +    @Override
    +    protected Insert insertRecordToKudu(KuduTable kuduTable, Record record, List<String>
fieldNames) throws IllegalStateException, Exception {
    +        Insert insert = kuduTable.newInsert();
    +        this.insert(kuduTable, insert, record, fieldNames);
    +        return insert;
    +    }
    +
    +    private void insert(KuduTable kuduTable, Operation operation, Record record, List<String>
fieldNames){
    +        PartialRow row = operation.getRow();
    +        Schema colSchema = kuduTable.getSchema();
    +
    +        for (String colName : fieldNames) {
    +            int colIdx = this.getColumnIndex(colSchema, colName);
    +            if (colIdx != -1) {
    +                Type colType = colSchema.getColumnByIndex(colIdx).getType();
    +
    +                switch (colType.getDataType()) {
    +                    case BOOL:
    +                        row.addBoolean(colIdx, record.getAsBoolean(colName));
    +                        break;
    +                    case FLOAT:
    +                        row.addFloat(colIdx, record.getAsFloat(colName));
    +                        break;
    +                    case DOUBLE:
    +                        row.addDouble(colIdx, record.getAsDouble(colName));
    +                        break;
    +                    case BINARY:
    +                        row.addBinary(colIdx, record.getAsString(colName).getBytes());
    +                        break;
    +                    case INT8:
    +                    case INT16:
    +                        short temp = Short.parseShort(record.getAsInt(colName).toString());
    --- End diff --
    
    What about: (short) record.getAsInt(colName).intValue()? because getAsInt(). return Integer
obj


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