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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.
*/
package org.dinky.shaded.paimon.table.system;
import org.dinky.shaded.paimon.Snapshot;
import org.dinky.shaded.paimon.data.BinaryString;
import org.dinky.shaded.paimon.data.GenericRow;
import org.dinky.shaded.paimon.data.InternalRow;
import org.dinky.shaded.paimon.data.Timestamp;
import org.dinky.shaded.paimon.disk.IOManager;
import org.dinky.shaded.paimon.fs.FileIO;
import org.dinky.shaded.paimon.fs.Path;
import org.dinky.shaded.paimon.manifest.FileKind;
import org.dinky.shaded.paimon.operation.FileStoreScan;
import org.dinky.shaded.paimon.predicate.Predicate;
import org.dinky.shaded.paimon.reader.RecordReader;
import org.dinky.shaded.paimon.table.FileStoreTable;
import org.dinky.shaded.paimon.table.ReadonlyTable;
import org.dinky.shaded.paimon.table.Table;
import org.dinky.shaded.paimon.table.source.InnerTableRead;
import org.dinky.shaded.paimon.table.source.InnerTableScan;
import org.dinky.shaded.paimon.table.source.ReadOnceTableScan;
import org.dinky.shaded.paimon.table.source.Split;
import org.dinky.shaded.paimon.table.source.TableRead;
import org.dinky.shaded.paimon.types.BigIntType;
import org.dinky.shaded.paimon.types.DataField;
import org.dinky.shaded.paimon.types.IntType;
import org.dinky.shaded.paimon.types.RowType;
import org.dinky.shaded.paimon.types.TimestampType;
import org.dinky.shaded.paimon.utils.IteratorRecordReader;
import org.dinky.shaded.paimon.utils.ProjectedRow;
import org.dinky.shaded.paimon.utils.SerializationUtils;
import org.dinky.shaded.paimon.utils.SnapshotManager;
import org.dinky.shaded.paimon.shade.guava30.com.google.common.collect.Iterators;
import java.io.IOException;
import java.time.Instant;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.util.Arrays;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import static org.dinky.shaded.paimon.catalog.Catalog.SYSTEM_TABLE_SPLITTER;
/** A {@link Table} for showing committing snapshots of table. */
public class SnapshotsTable implements ReadonlyTable {
private static final long serialVersionUID = 1L;
public static final String SNAPSHOTS = "snapshots";
public static final RowType TABLE_TYPE =
new RowType(
Arrays.asList(
new DataField(0, "snapshot_id", new BigIntType(false)),
new DataField(1, "schema_id", new BigIntType(false)),
new DataField(
2, "commit_user", SerializationUtils.newStringType(false)),
new DataField(3, "commit_identifier", new BigIntType(false)),
new DataField(
4, "commit_kind", SerializationUtils.newStringType(false)),
new DataField(5, "commit_time", new TimestampType(false, 3)),
new DataField(
6,
"base_manifest_list",
SerializationUtils.newStringType(false)),
new DataField(
7,
"delta_manifest_list",
SerializationUtils.newStringType(false)),
new DataField(
8,
"changelog_manifest_list",
SerializationUtils.newStringType(true)),
new DataField(9, "total_record_count", new BigIntType(true)),
new DataField(10, "delta_record_count", new BigIntType(true)),
new DataField(11, "changelog_record_count", new BigIntType(true)),
new DataField(12, "added_file_count", new IntType(true)),
new DataField(13, "delete_file_count", new IntType(true)),
new DataField(14, "watermark", new BigIntType(true))));
private final FileIO fileIO;
private final Path location;
private final FileStoreTable dataTable;
public SnapshotsTable(FileIO fileIO, Path location, FileStoreTable dataTable) {
this.fileIO = fileIO;
this.location = location;
this.dataTable = dataTable;
}
@Override
public String name() {
return location.getName() + SYSTEM_TABLE_SPLITTER + SNAPSHOTS;
}
@Override
public RowType rowType() {
return TABLE_TYPE;
}
@Override
public List primaryKeys() {
return Collections.singletonList("snapshot_id");
}
@Override
public InnerTableScan newScan() {
return new SnapshotsScan();
}
@Override
public InnerTableRead newRead() {
return new SnapshotsRead(fileIO, dataTable);
}
@Override
public Table copy(Map dynamicOptions) {
return new SnapshotsTable(fileIO, location, dataTable.copy(dynamicOptions));
}
private class SnapshotsScan extends ReadOnceTableScan {
@Override
public InnerTableScan withFilter(Predicate predicate) {
// TODO
return this;
}
@Override
public Plan innerPlan() {
return () -> Collections.singletonList(new SnapshotsSplit(fileIO, location));
}
}
private static class SnapshotsSplit implements Split {
private static final long serialVersionUID = 1L;
private final FileIO fileIO;
private final Path location;
private SnapshotsSplit(FileIO fileIO, Path location) {
this.fileIO = fileIO;
this.location = location;
}
@Override
public long rowCount() {
try {
return new SnapshotManager(fileIO, location).snapshotCount();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
SnapshotsSplit that = (SnapshotsSplit) o;
return Objects.equals(location, that.location);
}
@Override
public int hashCode() {
return Objects.hash(location);
}
}
private static class SnapshotsRead implements InnerTableRead {
private final FileIO fileIO;
private int[][] projection;
private final FileStoreTable dataTable;
public SnapshotsRead(FileIO fileIO, FileStoreTable dataTable) {
this.fileIO = fileIO;
this.dataTable = dataTable;
}
@Override
public InnerTableRead withFilter(Predicate predicate) {
// TODO
return this;
}
@Override
public InnerTableRead withProjection(int[][] projection) {
this.projection = projection;
return this;
}
@Override
public TableRead withIOManager(IOManager ioManager) {
return this;
}
@Override
public RecordReader createReader(Split split) throws IOException {
if (!(split instanceof SnapshotsSplit)) {
throw new IllegalArgumentException("Unsupported split: " + split.getClass());
}
Path location = ((SnapshotsSplit) split).location;
Iterator snapshots = new SnapshotManager(fileIO, location).snapshots();
Iterator rows =
Iterators.transform(snapshots, snapshot -> toRow(snapshot, dataTable));
if (projection != null) {
rows =
Iterators.transform(
rows, row -> ProjectedRow.from(projection).replaceRow(row));
}
return new IteratorRecordReader<>(rows);
}
private InternalRow toRow(Snapshot snapshot, FileStoreTable dataTable) {
FileStoreScan.Plan plan = dataTable.store().newScan().withSnapshot(snapshot).plan();
return GenericRow.of(
snapshot.id(),
snapshot.schemaId(),
BinaryString.fromString(snapshot.commitUser()),
snapshot.commitIdentifier(),
BinaryString.fromString(snapshot.commitKind().toString()),
Timestamp.fromLocalDateTime(
LocalDateTime.ofInstant(
Instant.ofEpochMilli(snapshot.timeMillis()),
ZoneId.systemDefault())),
BinaryString.fromString(snapshot.baseManifestList()),
BinaryString.fromString(snapshot.deltaManifestList()),
BinaryString.fromString(snapshot.changelogManifestList()),
snapshot.totalRecordCount(),
snapshot.deltaRecordCount(),
snapshot.changelogRecordCount(),
plan.files(FileKind.ADD).size(),
plan.files(FileKind.DELETE).size(),
snapshot.watermark());
}
}
}
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