kennknowles commented on code in PR #30805: URL: https://github.com/apache/beam/pull/30805#discussion_r1558429972
########## sdks/java/io/iceberg/src/main/java/org/apache/beam/io/iceberg/CombinedScanReader.java: ########## @@ -0,0 +1,214 @@ +/* + * 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.beam.io.iceberg; + +import static org.apache.beam.sdk.util.Preconditions.checkStateNotNull; + +import java.io.IOException; +import java.util.ArrayDeque; +import java.util.NoSuchElementException; +import java.util.Queue; +import javax.annotation.Nullable; +import org.apache.beam.sdk.io.BoundedSource; +import org.apache.beam.sdk.schemas.Schema; +import org.apache.beam.sdk.values.Row; +import org.apache.iceberg.CombinedScanTask; +import org.apache.iceberg.DataFile; +import org.apache.iceberg.FileScanTask; +import org.apache.iceberg.Table; +import org.apache.iceberg.avro.Avro; +import org.apache.iceberg.data.Record; +import org.apache.iceberg.data.avro.DataReader; +import org.apache.iceberg.data.orc.GenericOrcReader; +import org.apache.iceberg.data.parquet.GenericParquetReaders; +import org.apache.iceberg.encryption.EncryptionManager; +import org.apache.iceberg.encryption.InputFilesDecryptor; +import org.apache.iceberg.io.CloseableIterable; +import org.apache.iceberg.io.CloseableIterator; +import org.apache.iceberg.io.FileIO; +import org.apache.iceberg.io.InputFile; +import org.apache.iceberg.orc.ORC; +import org.apache.iceberg.parquet.Parquet; +import org.checkerframework.checker.nullness.qual.NonNull; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +public class CombinedScanReader extends BoundedSource.BoundedReader<Row> { + private static final Logger LOG = LoggerFactory.getLogger(CombinedScanReader.class); + + private final IcebergBoundedSource source; + private final Table table; + + private final @Nullable CombinedScanTask task; + + private final Schema schema; + + transient @Nullable org.apache.iceberg.Schema project; + transient @Nullable FileIO io; + transient @Nullable InputFilesDecryptor decryptor; + transient @Nullable Queue<FileScanTask> files; + transient @Nullable CloseableIterator<Record> baseIter; + transient @Nullable Record current; + + public CombinedScanReader( + IcebergBoundedSource source, @Nullable CombinedScanTask task, Schema schema) { + this.source = source; + this.table = + checkStateNotNull( + source.table(), "CombinedScanReader requires an IcebergBoundedSource with a table"); + this.task = task; + this.schema = schema; + if (this.schema != null) { + project = SchemaHelper.convert(this.schema); + } + } + + @Override + public boolean start() throws IOException { + if (task == null) { + return false; + } + + EncryptionManager encryptionManager = table.encryption(); + io = table.io(); + decryptor = new InputFilesDecryptor(task, io, encryptionManager); + + files = new ArrayDeque<>(); + files.addAll(task.files()); + + return advance(); + } + + @Override + public boolean advance() throws IOException { + Queue<FileScanTask> files = + checkStateNotNull(this.files, "files null in advance() - did you call start()?"); + InputFilesDecryptor decryptor = + checkStateNotNull(this.decryptor, "decryptor null in adance() - did you call start()?"); + + // This is a lie, but the most expedient way to work with IcebergIO's Review Comment: Actually I added this comment to explain why the type was fake. I reworded it. ########## sdks/java/io/iceberg/src/main/java/org/apache/beam/io/iceberg/IcebergBoundedSource.java: ########## @@ -0,0 +1,129 @@ +/* + * 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.beam.io.iceberg; + +import java.io.IOException; +import java.util.ArrayList; +import java.util.List; +import org.apache.beam.sdk.coders.Coder; +import org.apache.beam.sdk.coders.RowCoder; +import org.apache.beam.sdk.io.BoundedSource; +import org.apache.beam.sdk.options.PipelineOptions; +import org.apache.beam.sdk.transforms.display.DisplayData; +import org.apache.beam.sdk.values.Row; +import org.apache.iceberg.CombinedScanTask; +import org.apache.iceberg.Table; +import org.apache.iceberg.TableProperties; +import org.apache.iceberg.TableScan; +import org.apache.iceberg.catalog.Catalog; +import org.apache.iceberg.catalog.TableIdentifier; +import org.apache.iceberg.io.CloseableIterable; +import org.checkerframework.checker.nullness.qual.Nullable; + +public class IcebergBoundedSource extends BoundedSource<Row> { + + private @Nullable CombinedScanTask task; + private IcebergScan scan; + + public IcebergBoundedSource(IcebergScan scan, @Nullable CombinedScanTask task) { + this.task = task; + this.scan = scan; + } + + public IcebergBoundedSource(IcebergScan scan) { + this(scan, null); + } + + public Catalog catalog() { + return scan.getCatalog().catalog(); + } + + public Table table() { + return catalog() + .loadTable(TableIdentifier.of(scan.getTable().toArray(new String[scan.getTable().size()]))); + } + + @Override + public List<? extends BoundedSource<Row>> split( + long desiredBundleSizeBytes, PipelineOptions options) throws Exception { + ArrayList<IcebergBoundedSource> tasks = new ArrayList<>(); + switch (scan.getType()) { + case TABLE: + // Override the split size with our desired size + TableScan tableScan = table().newScan(); + + if (desiredBundleSizeBytes > 0) { + tableScan = tableScan.option(TableProperties.SPLIT_SIZE, "" + desiredBundleSizeBytes); + } + + // Always project to our destination schema + tableScan = tableScan.project(SchemaHelper.convert(scan.getSchema())); + + if (scan.getFilter() != null) { + tableScan = tableScan.filter(scan.getFilter()); + } + if (scan.getCaseSensitive() != null) { + tableScan = tableScan.caseSensitive(scan.getCaseSensitive()); + } + if (scan.getSnapshot() != null) { + tableScan = tableScan.useSnapshot(scan.getSnapshot()); + } + if (scan.getBranch() != null) { + tableScan = tableScan.useRef(scan.getBranch()); + } else if (scan.getTag() != null) { + tableScan = tableScan.useRef(scan.getTag()); + } + try (CloseableIterable<CombinedScanTask> t = tableScan.planTasks()) { + for (CombinedScanTask c : t) { + tasks.add(new IcebergBoundedSource(scan, c)); + } + } catch (IOException e) { + throw new RuntimeException(e); + } + break; + case BATCH: + // TODO: Add batch scan Review Comment: Done ########## sdks/java/io/iceberg/src/main/java/org/apache/beam/io/iceberg/IcebergBoundedSource.java: ########## @@ -0,0 +1,129 @@ +/* + * 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.beam.io.iceberg; + +import java.io.IOException; +import java.util.ArrayList; +import java.util.List; +import org.apache.beam.sdk.coders.Coder; +import org.apache.beam.sdk.coders.RowCoder; +import org.apache.beam.sdk.io.BoundedSource; +import org.apache.beam.sdk.options.PipelineOptions; +import org.apache.beam.sdk.transforms.display.DisplayData; +import org.apache.beam.sdk.values.Row; +import org.apache.iceberg.CombinedScanTask; +import org.apache.iceberg.Table; +import org.apache.iceberg.TableProperties; +import org.apache.iceberg.TableScan; +import org.apache.iceberg.catalog.Catalog; +import org.apache.iceberg.catalog.TableIdentifier; +import org.apache.iceberg.io.CloseableIterable; +import org.checkerframework.checker.nullness.qual.Nullable; + +public class IcebergBoundedSource extends BoundedSource<Row> { + + private @Nullable CombinedScanTask task; + private IcebergScan scan; + + public IcebergBoundedSource(IcebergScan scan, @Nullable CombinedScanTask task) { + this.task = task; + this.scan = scan; + } + + public IcebergBoundedSource(IcebergScan scan) { + this(scan, null); + } + + public Catalog catalog() { + return scan.getCatalog().catalog(); + } + + public Table table() { + return catalog() + .loadTable(TableIdentifier.of(scan.getTable().toArray(new String[scan.getTable().size()]))); + } + + @Override + public List<? extends BoundedSource<Row>> split( + long desiredBundleSizeBytes, PipelineOptions options) throws Exception { + ArrayList<IcebergBoundedSource> tasks = new ArrayList<>(); + switch (scan.getType()) { + case TABLE: + // Override the split size with our desired size + TableScan tableScan = table().newScan(); + + if (desiredBundleSizeBytes > 0) { + tableScan = tableScan.option(TableProperties.SPLIT_SIZE, "" + desiredBundleSizeBytes); Review Comment: Done ########## sdks/java/io/iceberg/src/main/java/org/apache/beam/io/iceberg/IcebergBoundedSource.java: ########## @@ -0,0 +1,129 @@ +/* + * 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.beam.io.iceberg; + +import java.io.IOException; +import java.util.ArrayList; +import java.util.List; +import org.apache.beam.sdk.coders.Coder; +import org.apache.beam.sdk.coders.RowCoder; +import org.apache.beam.sdk.io.BoundedSource; +import org.apache.beam.sdk.options.PipelineOptions; +import org.apache.beam.sdk.transforms.display.DisplayData; +import org.apache.beam.sdk.values.Row; +import org.apache.iceberg.CombinedScanTask; +import org.apache.iceberg.Table; +import org.apache.iceberg.TableProperties; +import org.apache.iceberg.TableScan; +import org.apache.iceberg.catalog.Catalog; +import org.apache.iceberg.catalog.TableIdentifier; +import org.apache.iceberg.io.CloseableIterable; +import org.checkerframework.checker.nullness.qual.Nullable; + +public class IcebergBoundedSource extends BoundedSource<Row> { Review Comment: Agree -- This is an automated message from the Apache Git Service. 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