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[Imporve][Fake-Connector-V2]support user-defined-schmea and random da…
…ta for fake-table (apache#2406) * [Connector-V2][JDBC-connector] optimization fake Co-authored-by: tangjiafu <tangjiafu@corp.netease.com>
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,76 @@ | ||
| # FakeSource | ||
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| > FakeSource connector | ||
| ## Description | ||
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| The FakeSource is a virtual data source, which randomly generates the number of rows according to the data structure of the user-defined schema, | ||
| just for testing, such as type conversion and feature testing | ||
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| ## Options | ||
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| | name | type | required | default value | | ||
| |-------------------|--------|----------|---------------| | ||
| | result_table_name | string | yes | - | | ||
| | schema | config | yes | - | | ||
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| ### result_table_name [string] | ||
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| The table name. | ||
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| ### type [string] | ||
| Table structure description ,you should assign schema option to tell connector how to parse data to the row you want. | ||
| **Tips**: Most of Unstructured-Datasource contain this param, such as LocalFile,HdfsFile. | ||
| **Example**: | ||
| ```hocon | ||
| schema = { | ||
| fields { | ||
| c_map = "map<string, string>" | ||
| c_array = "array<tinyint>" | ||
| c_string = string | ||
| c_boolean = boolean | ||
| c_tinyint = tinyint | ||
| c_smallint = smallint | ||
| c_int = int | ||
| c_bigint = bigint | ||
| c_float = float | ||
| c_double = double | ||
| c_decimal = "decimal(30, 8)" | ||
| c_null = "null" | ||
| c_bytes = bytes | ||
| c_date = date | ||
| c_time = time | ||
| c_timestamp = timestamp | ||
| } | ||
| } | ||
| ``` | ||
|
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| ## Example | ||
| Simple source for FakeSource which contains enough datatype | ||
| ```hocon | ||
| source { | ||
| FakeSource { | ||
| schema = { | ||
| fields { | ||
| c_map = "map<string, string>" | ||
| c_array = "array<tinyint>" | ||
| c_string = string | ||
| c_boolean = boolean | ||
| c_tinyint = tinyint | ||
| c_smallint = smallint | ||
| c_int = int | ||
| c_bigint = bigint | ||
| c_float = float | ||
| c_double = double | ||
| c_decimal = "decimal(30, 8)" | ||
| c_null = "null" | ||
| c_bytes = bytes | ||
| c_date = date | ||
| c_time = time | ||
| c_timestamp = timestamp | ||
| } | ||
| } | ||
| result_table_name = "fake" | ||
| } | ||
| } | ||
| ``` |
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...e/src/main/java/org/apache/seatunnel/connectors/seatunnel/fake/source/FakeRandomData.java
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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. | ||
| */ | ||
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| package org.apache.seatunnel.connectors.seatunnel.fake.source; | ||
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| import static org.apache.seatunnel.api.table.type.BasicType.BOOLEAN_TYPE; | ||
| import static org.apache.seatunnel.api.table.type.BasicType.BYTE_TYPE; | ||
| import static org.apache.seatunnel.api.table.type.BasicType.DOUBLE_TYPE; | ||
| import static org.apache.seatunnel.api.table.type.BasicType.FLOAT_TYPE; | ||
| import static org.apache.seatunnel.api.table.type.BasicType.INT_TYPE; | ||
| import static org.apache.seatunnel.api.table.type.BasicType.LONG_TYPE; | ||
| import static org.apache.seatunnel.api.table.type.BasicType.SHORT_TYPE; | ||
| import static org.apache.seatunnel.api.table.type.BasicType.STRING_TYPE; | ||
| import static org.apache.seatunnel.api.table.type.BasicType.VOID_TYPE; | ||
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| import org.apache.seatunnel.api.table.type.ArrayType; | ||
| import org.apache.seatunnel.api.table.type.BasicType; | ||
| import org.apache.seatunnel.api.table.type.DecimalType; | ||
| import org.apache.seatunnel.api.table.type.LocalTimeType; | ||
| import org.apache.seatunnel.api.table.type.MapType; | ||
| import org.apache.seatunnel.api.table.type.PrimitiveByteArrayType; | ||
| import org.apache.seatunnel.api.table.type.SeaTunnelDataType; | ||
| import org.apache.seatunnel.api.table.type.SeaTunnelRow; | ||
| import org.apache.seatunnel.api.table.type.SeaTunnelRowType; | ||
| import org.apache.seatunnel.connectors.seatunnel.common.schema.SeatunnelSchema; | ||
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| import org.apache.commons.lang3.RandomStringUtils; | ||
| import org.apache.commons.lang3.RandomUtils; | ||
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| import java.lang.reflect.Array; | ||
| import java.math.BigDecimal; | ||
| import java.time.LocalDateTime; | ||
| import java.util.ArrayList; | ||
| import java.util.HashMap; | ||
| import java.util.List; | ||
|
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| public class FakeRandomData { | ||
| public static final String SCHEMA = "schema"; | ||
| private final SeatunnelSchema schema; | ||
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| public FakeRandomData(SeatunnelSchema schema) { | ||
| this.schema = schema; | ||
| } | ||
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| public SeaTunnelRow randomRow() { | ||
| SeaTunnelRowType seaTunnelRowType = schema.getSeaTunnelRowType(); | ||
| String[] fieldNames = seaTunnelRowType.getFieldNames(); | ||
| SeaTunnelDataType<?>[] fieldTypes = seaTunnelRowType.getFieldTypes(); | ||
| List<Object> randomRow = new ArrayList<>(fieldNames.length); | ||
| for (SeaTunnelDataType<?> fieldType : fieldTypes) { | ||
| randomRow.add(randomColumnValue(fieldType)); | ||
| } | ||
| return new SeaTunnelRow(randomRow.toArray()); | ||
| } | ||
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| @SuppressWarnings("magicnumber") | ||
| private Object randomColumnValue(SeaTunnelDataType<?> fieldType) { | ||
| if (BOOLEAN_TYPE.equals(fieldType)) { | ||
| return RandomUtils.nextInt(0, 2) == 1; | ||
| } else if (BYTE_TYPE.equals(fieldType)) { | ||
| return (byte) RandomUtils.nextInt(0, 255); | ||
| } else if (SHORT_TYPE.equals(fieldType)) { | ||
| return (short) RandomUtils.nextInt(Byte.MAX_VALUE, Short.MAX_VALUE); | ||
| } else if (INT_TYPE.equals(fieldType)) { | ||
| return RandomUtils.nextInt(Short.MAX_VALUE, Integer.MAX_VALUE); | ||
| } else if (LONG_TYPE.equals(fieldType)) { | ||
| return RandomUtils.nextLong(Integer.MAX_VALUE, Long.MAX_VALUE); | ||
| } else if (FLOAT_TYPE.equals(fieldType)) { | ||
| return RandomUtils.nextFloat(Float.MIN_VALUE, Float.MAX_VALUE); | ||
| } else if (DOUBLE_TYPE.equals(fieldType)) { | ||
| return RandomUtils.nextDouble(Float.MAX_VALUE, Double.MAX_VALUE); | ||
| } else if (STRING_TYPE.equals(fieldType)) { | ||
| return RandomStringUtils.randomAlphabetic(10); | ||
| } else if (LocalTimeType.LOCAL_DATE_TYPE.equals(fieldType)) { | ||
| return randomLocalDateTime().toLocalDate(); | ||
| } else if (LocalTimeType.LOCAL_TIME_TYPE.equals(fieldType)) { | ||
| return randomLocalDateTime().toLocalTime(); | ||
| } else if (LocalTimeType.LOCAL_DATE_TIME_TYPE.equals(fieldType)) { | ||
| return randomLocalDateTime(); | ||
| } else if (fieldType instanceof DecimalType) { | ||
| DecimalType decimalType = (DecimalType) fieldType; | ||
| return new BigDecimal(RandomStringUtils.randomNumeric(decimalType.getPrecision() - decimalType.getScale()) + "." + | ||
| RandomStringUtils.randomNumeric(decimalType.getScale())); | ||
| } else if (fieldType instanceof ArrayType) { | ||
| ArrayType<?, ?> arrayType = (ArrayType<?, ?>) fieldType; | ||
| BasicType<?> elementType = arrayType.getElementType(); | ||
| Object value = randomColumnValue(elementType); | ||
| Object arr = Array.newInstance(elementType.getTypeClass(), 1); | ||
| Array.set(arr, 0, value); | ||
| return arr; | ||
| } else if (fieldType instanceof MapType) { | ||
| MapType<?, ?> mapType = (MapType<?, ?>) fieldType; | ||
| SeaTunnelDataType<?> keyType = mapType.getKeyType(); | ||
| Object key = randomColumnValue(keyType); | ||
| SeaTunnelDataType<?> valueType = mapType.getValueType(); | ||
| Object value = randomColumnValue(valueType); | ||
| HashMap<Object, Object> objectObjectHashMap = new HashMap<>(); | ||
| objectObjectHashMap.put(key, value); | ||
| return objectObjectHashMap; | ||
| } else if (fieldType instanceof PrimitiveByteArrayType) { | ||
| return RandomUtils.nextBytes(100); | ||
| } else if (VOID_TYPE.equals(fieldType) || fieldType == null) { | ||
| return Void.TYPE; | ||
| } else { | ||
| throw new UnsupportedOperationException("Unexpected value: " + fieldType); | ||
| } | ||
| } | ||
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| @SuppressWarnings("magicnumber") | ||
| private LocalDateTime randomLocalDateTime() { | ||
| return LocalDateTime.of( | ||
| LocalDateTime.now().getYear(), | ||
| RandomUtils.nextInt(1, 12), | ||
| RandomUtils.nextInt(1, LocalDateTime.now().getDayOfMonth()), | ||
| RandomUtils.nextInt(0, 24), | ||
| RandomUtils.nextInt(0, 59) | ||
| ); | ||
| } | ||
| } |
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