[3.0][cdc-common] Add SchemaChangeEvent implementations (#2664)
Kunni
1 year ago
committed by
GitHub
parent
1329a48bcc
commit
c52ccfa5c6
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/*
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* Copyright 2023 Ververica Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.ververica.cdc.common.event;
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import org.apache.flink.annotation.PublicEvolving;
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import com.ververica.cdc.common.schema.Column;
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import javax.annotation.Nullable;
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import java.io.Serializable;
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import java.util.List;
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import java.util.Objects;
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/**
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* A {@link SchemaChangeEvent} that represents an {@code ADD COLUMN} DDL, which may contain the
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* lenient column type changes.
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*/
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@PublicEvolving
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public final class AddColumnEvent implements SchemaChangeEvent {
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private static final long serialVersionUID = 1L;
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private final TableId tableId;
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private final List<ColumnWithPosition> addedColumns;
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public AddColumnEvent(TableId tableId, List<ColumnWithPosition> addedColumns) {
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this.tableId = tableId;
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this.addedColumns = addedColumns;
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}
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/** Returns the added columns. */
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public List<ColumnWithPosition> getAddedColumns() {
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return addedColumns;
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}
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/** relative Position of column. */
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public enum ColumnPosition implements Serializable {
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BEFORE,
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AFTER,
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FIRST,
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LAST
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}
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/** represents result of an ADD COLUMN DDL that may change column sequence. */
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public static class ColumnWithPosition implements Serializable {
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/** The added column. */
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private final Column addColumn;
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/** The position of the added column. */
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private final ColumnPosition position;
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/** The added column lies in the position relative to this column. */
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private final @Nullable Column existingColumn;
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/** In the default scenario, we add fields at the end of the column. */
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public ColumnWithPosition(Column addColumn) {
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this.addColumn = addColumn;
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position = ColumnPosition.LAST;
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existingColumn = null;
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}
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public ColumnWithPosition(
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Column addColumn, ColumnPosition position, Column existingColumn) {
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this.addColumn = addColumn;
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this.position = position;
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this.existingColumn = existingColumn;
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}
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public Column getAddColumn() {
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return addColumn;
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}
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public ColumnPosition getPosition() {
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return position;
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}
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public Column getExistingColumn() {
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return existingColumn;
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}
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@Override
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public boolean equals(Object o) {
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if (this == o) {
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return true;
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}
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if (o == null || getClass() != o.getClass()) {
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return false;
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}
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if (!super.equals(o)) {
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return false;
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}
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ColumnWithPosition that = (ColumnWithPosition) o;
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return Objects.equals(addColumn, that.addColumn)
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&& Objects.equals(position, that.position)
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&& Objects.equals(existingColumn, that.existingColumn);
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}
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@Override
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public int hashCode() {
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return Objects.hash(addColumn, position, existingColumn);
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}
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@Override
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public String toString() {
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return "ColumnWithPosition{"
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+ "column="
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+ addColumn
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+ ", position="
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+ position
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+ ", existingColumn="
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+ existingColumn
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+ '}';
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}
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}
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@Override
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public boolean equals(Object o) {
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if (this == o) {
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return true;
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}
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if (o == null || getClass() != o.getClass()) {
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return false;
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}
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if (!super.equals(o)) {
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return false;
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}
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AddColumnEvent that = (AddColumnEvent) o;
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return Objects.equals(tableId, that.tableId)
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&& Objects.equals(addedColumns, that.addedColumns);
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}
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@Override
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public int hashCode() {
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return Objects.hash(tableId, addedColumns);
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}
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@Override
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public String toString() {
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return "AddColumnEvent{" + "tableId=" + tableId + ", addedColumns=" + addedColumns + '}';
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}
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@Override
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public TableId tableId() {
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return tableId;
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}
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}
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@ -0,0 +1,82 @@
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/*
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* Copyright 2023 Ververica Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.ververica.cdc.common.event;
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import com.ververica.cdc.common.types.DataType;
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import java.util.Map;
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import java.util.Objects;
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/**
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* A {@link SchemaChangeEvent} that represents an {@code ALTER COLUMN} DDL, which may contain the
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* lenient column type changes.
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*/
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public class AlterColumnTypeEvent implements SchemaChangeEvent {
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private static final long serialVersionUID = 1L;
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private final TableId tableId;
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/** key => column name, value => column type after changing. */
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private final Map<String, DataType> typeMapping;
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public AlterColumnTypeEvent(TableId tableId, Map<String, DataType> typeMapping) {
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this.tableId = tableId;
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this.typeMapping = typeMapping;
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}
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/** Returns the type mapping. */
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public Map<String, DataType> getTypeMapping() {
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return typeMapping;
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}
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@Override
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public boolean equals(Object o) {
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if (this == o) {
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return true;
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}
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if (o == null || getClass() != o.getClass()) {
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return false;
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}
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if (!super.equals(o)) {
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return false;
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}
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AlterColumnTypeEvent that = (AlterColumnTypeEvent) o;
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return Objects.equals(tableId, that.tableId)
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&& Objects.equals(typeMapping, that.typeMapping);
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}
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@Override
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public int hashCode() {
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return Objects.hash(tableId, typeMapping);
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}
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@Override
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public String toString() {
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return "AlterColumnTypeEvent{"
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+ "tableId="
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+ tableId
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+ ", nameMapping="
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+ typeMapping
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+ '}';
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}
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@Override
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public TableId tableId() {
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return tableId;
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}
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}
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@ -0,0 +1,78 @@
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/*
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* Copyright 2023 Ververica Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.ververica.cdc.common.event;
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import org.apache.flink.annotation.PublicEvolving;
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import com.ververica.cdc.common.schema.Schema;
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import com.ververica.cdc.common.source.DataSource;
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import java.util.Objects;
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/**
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* A {@link SchemaChangeEvent} that represents an {@code CREATE TABLE} DDL. this will be sent by
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* {@link DataSource} before all {@link DataChangeEvent} with the same tableId
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*/
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@PublicEvolving
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public class CreateTableEvent implements SchemaChangeEvent {
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private static final long serialVersionUID = 1L;
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private final TableId tableId;
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private final Schema schema;
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public CreateTableEvent(TableId tableId, Schema schema) {
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this.tableId = tableId;
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this.schema = schema;
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}
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/** Returns the table schema. */
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public Schema getSchema() {
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return schema;
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}
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@Override
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public boolean equals(Object o) {
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if (this == o) {
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return true;
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}
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if (o == null || getClass() != o.getClass()) {
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return false;
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}
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if (!super.equals(o)) {
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return false;
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}
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CreateTableEvent that = (CreateTableEvent) o;
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return Objects.equals(tableId, that.tableId) && Objects.equals(schema, that.schema);
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}
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@Override
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public int hashCode() {
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return Objects.hash(tableId, schema);
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}
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@Override
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public String toString() {
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return "CreateTableEvent{" + "tableId=" + tableId + ", schema=" + schema + '}';
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}
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@Override
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public TableId tableId() {
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return tableId;
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}
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}
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@ -0,0 +1,84 @@
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/*
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* Copyright 2023 Ververica Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.ververica.cdc.common.event;
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import org.apache.flink.annotation.PublicEvolving;
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import com.ververica.cdc.common.schema.Column;
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import java.util.List;
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import java.util.Objects;
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/**
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* A {@link SchemaChangeEvent} that represents an {@code DROP COLUMN} DDL, which may contain the
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* lenient column type changes.
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*/
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@PublicEvolving
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public class DropColumnEvent implements SchemaChangeEvent {
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private static final long serialVersionUID = 1L;
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private final TableId tableId;
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private final List<Column> droppedColumns;
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public DropColumnEvent(TableId tableId, List<Column> droppedColumns) {
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this.tableId = tableId;
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this.droppedColumns = droppedColumns;
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}
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/** Returns the dropped columns. */
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public List<Column> getDroppedColumns() {
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return droppedColumns;
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}
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@Override
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public boolean equals(Object o) {
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if (this == o) {
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return true;
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}
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if (o == null || getClass() != o.getClass()) {
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return false;
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}
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if (!super.equals(o)) {
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return false;
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}
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DropColumnEvent that = (DropColumnEvent) o;
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return Objects.equals(tableId, that.tableId)
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&& Objects.equals(droppedColumns, that.droppedColumns);
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}
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@Override
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public int hashCode() {
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return Objects.hash(tableId, droppedColumns);
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}
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@Override
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public String toString() {
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return "DropColumnEvent{"
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+ "tableId="
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+ tableId
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+ ", droppedColumns="
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+ droppedColumns
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+ '}';
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}
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@Override
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public TableId tableId() {
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return tableId;
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}
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}
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@ -0,0 +1,75 @@
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/*
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* Copyright 2023 Ververica Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.ververica.cdc.common.event;
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import java.util.Map;
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import java.util.Objects;
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/**
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* A {@link SchemaChangeEvent} that represents an {@code RENAME COLUMN} DDL, which may contain the
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* lenient column type changes.
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*/
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public class RenameColumnEvent implements SchemaChangeEvent {
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private static final long serialVersionUID = 1L;
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private final TableId tableId;
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/** key => column name before changing, value => column name after changing. */
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private final Map<String, String> nameMapping;
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public RenameColumnEvent(TableId tableId, Map<String, String> nameMapping) {
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this.tableId = tableId;
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this.nameMapping = nameMapping;
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}
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/** Returns the name mapping. */
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public Map<String, String> getNameMapping() {
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return nameMapping;
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}
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@Override
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public boolean equals(Object o) {
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if (this == o) {
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return true;
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}
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if (o == null || getClass() != o.getClass()) {
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return false;
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}
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if (!super.equals(o)) {
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return false;
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}
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RenameColumnEvent that = (RenameColumnEvent) o;
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return Objects.equals(tableId, that.tableId)
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&& Objects.equals(nameMapping, that.nameMapping);
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}
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@Override
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public int hashCode() {
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return Objects.hash(tableId, nameMapping);
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}
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@Override
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public String toString() {
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return "RenameColumnEvent{" + "tableId=" + tableId + ", nameMapping=" + nameMapping + '}';
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}
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@Override
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public TableId tableId() {
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return tableId;
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}
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}
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