org.apache.inlong.sort.base.dirty.utils.FormatUtils Maven / Gradle / Ivy
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* 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.inlong.sort.base.dirty.utils;
import org.apache.flink.formats.common.TimestampFormat;
import org.apache.flink.formats.json.JsonOptions.MapNullKeyMode;
import org.apache.flink.formats.json.RowDataToJsonConverters;
import org.apache.flink.formats.json.RowDataToJsonConverters.RowDataToJsonConverter;
import org.apache.flink.shaded.jackson2.com.fasterxml.jackson.core.JsonProcessingException;
import org.apache.flink.shaded.jackson2.com.fasterxml.jackson.databind.JsonNode;
import org.apache.flink.shaded.jackson2.com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.flink.shaded.jackson2.com.fasterxml.jackson.databind.node.ObjectNode;
import org.apache.flink.table.data.RowData;
import org.apache.flink.table.types.logical.LogicalType;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.StringJoiner;
import static org.apache.flink.table.data.RowData.createFieldGetter;
/**
* Format utils
*/
public final class FormatUtils {
/**
* The value for nullable field that is used for 'csv' format
*/
private static final String NULL_VALUE = "null";
/**
* The default value of field delimiter that is used for 'csv' format
*/
private static final String DEFAULT_FIELD_DELIMITER = ",";
private static final ObjectMapper MAPPER = new ObjectMapper();
private static final ObjectNode reuse = MAPPER.createObjectNode();
private FormatUtils() {
}
/**
* Parse FieldGetter from LogicalType
* @param rowType The row type
* @return A array of FieldGetter
*/
public static RowData.FieldGetter[] parseFieldGetters(LogicalType rowType) {
List logicalTypes = rowType.getChildren();
RowData.FieldGetter[] fieldGetters = new RowData.FieldGetter[logicalTypes.size()];
for (int i = 0; i < logicalTypes.size(); i++) {
fieldGetters[i] = createFieldGetter(logicalTypes.get(i), i);
}
return fieldGetters;
}
/**
* Parse RowDataToJsonConverter
* @param rowType The row type
* @return RowDataToJsonConverter
*/
public static RowDataToJsonConverter parseRowDataToJsonConverter(LogicalType rowType) {
return new RowDataToJsonConverters(TimestampFormat.SQL, MapNullKeyMode.DROP, null)
.createConverter(rowType);
}
/**
* Csv format for 'RowData'
*
* @param data The data wrapper with 'RowData'
* @param fieldGetters The field getters of 'RowData'
* @param labels The labels of dirty sink
* @param fieldDelimiter The field delimiter
* @return The value after format
*/
public static String csvFormat(RowData data, RowData.FieldGetter[] fieldGetters,
Map labels, String fieldDelimiter) {
StringJoiner result = csvFormatForLabels(labels, fieldDelimiter);
for (int i = 0; i < data.getArity(); i++) {
Object value = fieldGetters[i].getFieldOrNull(data);
result.add(value != null ? value.toString() : NULL_VALUE);
}
return result.toString();
}
/**
* Csv format for 'JsonNode'
*
* @param data The data wrapper with 'JsonNode'
* @param labels The labels of dirty sink
* @param fieldDelimiter The field delimiter
* @return The value after format
*/
public static String csvFormat(JsonNode data, Map labels, String fieldDelimiter) {
StringJoiner result = csvFormatForLabels(labels, fieldDelimiter);
Iterator> iterator = data.fields();
while (iterator.hasNext()) {
Entry kv = iterator.next();
result.add(kv.getValue() != null ? kv.getValue().asText() : NULL_VALUE);
}
return result.toString();
}
/**
* Csv format for 'Object'
*
* @param data Any object
* @param labels The labels of dirty sink
* @param fieldDelimiter The field delimiter
* @return The value after format
*/
public static String csvFormat(Object data, Map labels, String fieldDelimiter) {
StringJoiner result = csvFormatForLabels(labels, fieldDelimiter);
result.add(data == null ? NULL_VALUE : data.toString());
return result.toString();
}
/**
* Csv format for labels
*
* @param labels The labels of dirty sink
* @param result The result that store the value after format
* @return The value after format
*/
public static StringJoiner csvFormatForLabels(Map labels, StringJoiner result) {
if (labels == null || labels.isEmpty()) {
return result;
}
for (Entry kv : labels.entrySet()) {
result.add(kv.getValue() != null ? kv.getValue() : NULL_VALUE);
}
return result;
}
/**
* Csv format for labels
*
* @param labels The labels of dirty sink
* @param fieldDelimiter The field delimiter
* @return The value after format
*/
public static StringJoiner csvFormatForLabels(Map labels, String fieldDelimiter) {
return csvFormatForLabels(labels,
new StringJoiner(fieldDelimiter == null ? DEFAULT_FIELD_DELIMITER : fieldDelimiter));
}
/**
* Json format for 'RowData'
*
* @param data The data wrapper with 'RowData'
* @param converter The converter of 'RowData'
* @param labels The labels of dirty sink
* @return The value after format
* @throws JsonProcessingException The exception may be thrown when executing
*/
public static String jsonFormat(RowData data, RowDataToJsonConverter converter,
Map labels) throws JsonProcessingException {
return jsonFormat(converter.convert(MAPPER, reuse, data), labels);
}
/**
* Json format for 'JsonNode'
*
* @param data The data wrapper with 'JsonNode'
* @param labels The labels of dirty sink
* @return The value after format
* @throws JsonProcessingException The exception may be thrown when executing
*/
public static String jsonFormat(JsonNode data, Map labels)
throws JsonProcessingException {
Map result = new LinkedHashMap<>(labels);
Iterator> iterator = data.fields();
while (iterator.hasNext()) {
Entry kv = iterator.next();
result.put(kv.getKey(), kv.getValue());
}
return MAPPER.writeValueAsString(result);
}
}