Kafka Connect: Add delta writer support #12070
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,115 @@ | ||
| /* | ||
| * 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.iceberg.connect.data; | ||
|
|
||
| import java.io.IOException; | ||
| import java.util.Set; | ||
| import org.apache.iceberg.FileFormat; | ||
| import org.apache.iceberg.PartitionKey; | ||
| import org.apache.iceberg.PartitionSpec; | ||
| import org.apache.iceberg.Schema; | ||
| import org.apache.iceberg.StructLike; | ||
| import org.apache.iceberg.data.InternalRecordWrapper; | ||
| import org.apache.iceberg.data.Record; | ||
| import org.apache.iceberg.io.BaseTaskWriter; | ||
| import org.apache.iceberg.io.FileAppenderFactory; | ||
| import org.apache.iceberg.io.FileIO; | ||
| import org.apache.iceberg.io.OutputFileFactory; | ||
| import org.apache.iceberg.relocated.com.google.common.collect.Sets; | ||
| import org.apache.iceberg.types.TypeUtil; | ||
|
|
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| abstract class BaseDeltaTaskWriter extends BaseTaskWriter<Record> { | ||
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|
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| private final Schema schema; | ||
| private final Schema deleteSchema; | ||
| private final InternalRecordWrapper wrapper; | ||
| private final InternalRecordWrapper keyWrapper; | ||
| private final RecordProjection keyProjection; | ||
| private final boolean upsertMode; | ||
|
|
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| BaseDeltaTaskWriter( | ||
| PartitionSpec spec, | ||
| FileFormat format, | ||
| FileAppenderFactory<Record> appenderFactory, | ||
| OutputFileFactory fileFactory, | ||
| FileIO io, | ||
| long targetFileSize, | ||
| Schema schema, | ||
| Set<Integer> identifierFieldIds, | ||
| boolean upsertMode) { | ||
| super(spec, format, appenderFactory, fileFactory, io, targetFileSize); | ||
| this.schema = schema; | ||
| this.deleteSchema = TypeUtil.select(schema, Sets.newHashSet(identifierFieldIds)); | ||
| this.wrapper = new InternalRecordWrapper(schema.asStruct()); | ||
| this.keyWrapper = new InternalRecordWrapper(deleteSchema.asStruct()); | ||
| this.keyProjection = RecordProjection.create(schema, deleteSchema); | ||
| this.upsertMode = upsertMode; | ||
| } | ||
|
|
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| abstract RowDataDeltaWriter route(Record row); | ||
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| InternalRecordWrapper wrapper() { | ||
| return wrapper; | ||
| } | ||
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| @Override | ||
| public void write(Record row) throws IOException { | ||
| Operation op; | ||
| if (row instanceof RecordWrapper) { | ||
|
There was a problem hiding this comment. If CDC enabled and upsertMode enabled the CDC insert will not be changed to an UPDATE. Which I think might be wrong. |
||
| op = ((RecordWrapper) row).op(); | ||
| } else { | ||
| if (upsertMode) { | ||
| op = Operation.UPDATE; | ||
| } else { | ||
| op = Operation.INSERT; | ||
| } | ||
| } | ||
|
|
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| RowDataDeltaWriter writer = route(row); | ||
| switch (op) { | ||
| case INSERT: | ||
| writer.write(row); | ||
| break; | ||
| case DELETE: | ||
| writer.deleteKey(keyProjection.wrap(row)); | ||
| break; | ||
| default: | ||
| writer.deleteKey(keyProjection.wrap(row)); | ||
| writer.write(row); | ||
| break; | ||
| } | ||
| } | ||
|
|
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| class RowDataDeltaWriter extends BaseEqualityDeltaWriter { | ||
|
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| RowDataDeltaWriter(PartitionKey partition) { | ||
| super(partition, schema, deleteSchema); | ||
| } | ||
|
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| @Override | ||
| protected StructLike asStructLike(Record data) { | ||
| return wrapper.wrap(data); | ||
| } | ||
|
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| @Override | ||
| protected StructLike asStructLikeKey(Record data) { | ||
| return keyWrapper.wrap(data); | ||
| } | ||
| } | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| /* | ||
| * 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.iceberg.connect.data; | ||
|
|
||
| public enum Operation { | ||
| INSERT, | ||
| UPDATE, | ||
| DELETE | ||
| } |
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