Skip to content

[HUDI-3953]Flink Hudi module should support low-level source and sink… #5445

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
XuQianJin-Stars merged 1 commit into from
Jul 2, 2022
Merged

[HUDI-3953]Flink Hudi module should support low-level source and sink… #5445

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
271 changes: 271 additions & 0 deletions hudi-flink-datasource/hudi-flink/src/main/java/org/apache/hudi/util/HoodiePipeline.java
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,271 @@
/*
* 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.hudi.util;

import org.apache.hudi.exception.HoodieException;
import org.apache.hudi.table.HoodieTableFactory;

import org.apache.flink.configuration.ConfigOption;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.streaming.api.datastream.DataStream;
import org.apache.flink.streaming.api.datastream.DataStreamSink;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.table.api.EnvironmentSettings;
import org.apache.flink.table.api.internal.TableEnvironmentImpl;
import org.apache.flink.table.catalog.Catalog;
import org.apache.flink.table.catalog.ObjectIdentifier;
import org.apache.flink.table.catalog.ObjectPath;
import org.apache.flink.table.catalog.ResolvedCatalogTable;
import org.apache.flink.table.catalog.exceptions.TableNotExistException;
import org.apache.flink.table.connector.sink.DataStreamSinkProvider;
import org.apache.flink.table.connector.source.DataStreamScanProvider;
import org.apache.flink.table.connector.source.ScanTableSource;
import org.apache.flink.table.data.RowData;
import org.apache.flink.table.factories.FactoryUtil;
import org.apache.flink.table.runtime.connector.sink.SinkRuntimeProviderContext;
import org.apache.flink.table.runtime.connector.source.ScanRuntimeProviderContext;
import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

/**
* A tool class to construct hoodie flink pipeline.
*
* <p>How to use ?</p>
* Method {@link #builder(String)} returns a pipeline builder. The builder
* can then define the hudi table columns, primary keys and partitions.
*
* <p>An example:</p>
* <pre>
* HoodiePipeline.Builder builder = HoodiePipeline.builder("myTable");
* DataStreamSink<?> sinkStream = builder
* .column("f0 int")
* .column("f1 varchar(10)")
* .column("f2 varchar(20)")
* .pk("f0,f1")
* .partition("f2")
* .sink(input, false);
* </pre>
*/
public class HoodiePipeline {

private static final Logger LOG = LogManager.getLogger(HoodiePipeline.class);

/**
* Returns the builder for hoodie pipeline construction.
*/
public static Builder builder(String tableName) {
return new Builder(tableName);
}

/**
* Builder for hudi source/sink pipeline construction.
*/
public static class Builder {
private final String tableName;
private final List<String> columns;
private final Map<String, String> options;

private String pk;
private List<String> partitions;

private Builder(String tableName) {
this.tableName = tableName;
this.columns = new ArrayList<>();
this.options = new HashMap<>();
this.partitions = new ArrayList<>();
}

/**
* Add a table column definition.
*
* @param column the column format should be in the form like 'f0 int'
*/
public Builder column(String column) {
this.columns.add(column);
return this;
}

/**
* Add primary keys.
*/
public Builder pk(String... pks) {
this.pk = String.join(",", pks);
return this;
}

/**
* Add partition fields.
*/
public Builder partition(String... partitions) {
this.partitions = new ArrayList<>(Arrays.asList(partitions));
return this;
}

/**
* Add a config option.
*/
public Builder option(ConfigOption<?> option, Object val) {
this.options.put(option.key(), val.toString());
return this;
}

public Builder option(String key, Object val) {
this.options.put(key, val.toString());
return this;
}

public Builder options(Map<String, String> options) {
this.options.putAll(options);
return this;
}

public DataStreamSink<?> sink(DataStream<RowData> input, boolean bounded) {
TableDescriptor tableDescriptor = getTableDescriptor();
return HoodiePipeline.sink(input, tableDescriptor.getTableId(), tableDescriptor.getResolvedCatalogTable(), bounded);
}

public TableDescriptor getTableDescriptor() {
EnvironmentSettings environmentSettings = EnvironmentSettings
.newInstance()
.build();
TableEnvironmentImpl tableEnv = TableEnvironmentImpl.create(environmentSettings);
String sql = getCreateHoodieTableDDL(this.tableName, this.columns, this.options, this.pk, this.partitions);
tableEnv.executeSql(sql);
String currentCatalog = tableEnv.getCurrentCatalog();
ResolvedCatalogTable catalogTable = null;
String defaultDatabase = null;
try {
Catalog catalog = tableEnv.getCatalog(currentCatalog).get();
defaultDatabase = catalog.getDefaultDatabase();
catalogTable = (ResolvedCatalogTable) catalog.getTable(new ObjectPath(defaultDatabase, this.tableName));
} catch (TableNotExistException e) {
throw new HoodieException("Create table " + this.tableName + " exception", e);
}
ObjectIdentifier tableId = ObjectIdentifier.of(currentCatalog, defaultDatabase, this.tableName);
return new TableDescriptor(tableId, catalogTable);
}

public DataStream<RowData> source(StreamExecutionEnvironment execEnv) {
TableDescriptor tableDescriptor = getTableDescriptor();
return HoodiePipeline.source(execEnv, tableDescriptor.tableId, tableDescriptor.getResolvedCatalogTable());
}
}

private static String getCreateHoodieTableDDL(
String tableName,
List<String> fields,
Map<String, String> options,
String pkField,
List<String> partitionField) {
StringBuilder builder = new StringBuilder();
builder.append("create table ")
.append(tableName)
.append("(\n");
for (String field : fields) {
builder.append(" ")
.append(field)
.append(",\n");
}
builder.append(" PRIMARY KEY(")
.append(pkField)
.append(") NOT ENFORCED\n")
.append(")\n");
if (!partitionField.isEmpty()) {
String partitons = partitionField
.stream()
.map(partitionName -> "`" + partitionName + "`")
.collect(Collectors.joining(","));
builder.append("PARTITIONED BY (")
.append(partitons)
.append(")\n");
}
builder.append("with ('connector' = 'hudi'");
options.forEach((k, v) -> builder
.append(",\n")
.append(" '")
.append(k)
.append("' = '")
.append(v)
.append("'"));
builder.append("\n)");
return builder.toString();
}

/**
* Returns the data stream sink with given catalog table.
*
* @param input The input datastream
* @param tablePath The table path to the hoodie table in the catalog
* @param catalogTable The hoodie catalog table
* @param isBounded A flag indicating whether the input data stream is bounded
*/
private static DataStreamSink<?> sink(DataStream<RowData> input, ObjectIdentifier tablePath, ResolvedCatalogTable catalogTable, boolean isBounded) {
FactoryUtil.DefaultDynamicTableContext context = new FactoryUtil.DefaultDynamicTableContext(tablePath, catalogTable,
Configuration.fromMap(catalogTable.getOptions()), Thread.currentThread().getContextClassLoader(), false);
HoodieTableFactory hoodieTableFactory = new HoodieTableFactory();
return ((DataStreamSinkProvider) hoodieTableFactory.createDynamicTableSink(context)
.getSinkRuntimeProvider(new SinkRuntimeProviderContext(isBounded)))
.consumeDataStream(input);
}

/**
* Returns the data stream source with given catalog table.
*
* @param execEnv The execution environment
* @param tablePath The table path to the hoodie table in the catalog
* @param catalogTable The hoodie catalog table
*/
private static DataStream<RowData> source(StreamExecutionEnvironment execEnv, ObjectIdentifier tablePath, ResolvedCatalogTable catalogTable) {
FactoryUtil.DefaultDynamicTableContext context = new FactoryUtil.DefaultDynamicTableContext(tablePath, catalogTable,
Configuration.fromMap(catalogTable.getOptions()), Thread.currentThread().getContextClassLoader(), false);
HoodieTableFactory hoodieTableFactory = new HoodieTableFactory();
DataStreamScanProvider dataStreamScanProvider = (DataStreamScanProvider) ((ScanTableSource) hoodieTableFactory
.createDynamicTableSource(context))
.getScanRuntimeProvider(new ScanRuntimeProviderContext());
return dataStreamScanProvider.produceDataStream(execEnv);
}

/***
* A POJO that contains tableId and resolvedCatalogTable.
*/
public static class TableDescriptor {
private ObjectIdentifier tableId;
private ResolvedCatalogTable resolvedCatalogTable;

public TableDescriptor(ObjectIdentifier tableId, ResolvedCatalogTable resolvedCatalogTable) {
this.tableId = tableId;
this.resolvedCatalogTable = resolvedCatalogTable;
}

public ObjectIdentifier getTableId() {
return tableId;
}

public ResolvedCatalogTable getResolvedCatalogTable() {
return resolvedCatalogTable;
}
}
}
Loading