IcebergRollbackToSnapshotAction.java
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package org.apache.doris.datasource.iceberg.action;
import org.apache.doris.catalog.Column;
import org.apache.doris.catalog.Env;
import org.apache.doris.catalog.TableIf;
import org.apache.doris.catalog.Type;
import org.apache.doris.common.ArgumentParsers;
import org.apache.doris.common.UserException;
import org.apache.doris.datasource.ExternalTable;
import org.apache.doris.datasource.iceberg.IcebergExternalTable;
import org.apache.doris.nereids.trees.expressions.Expression;
import org.apache.doris.nereids.trees.plans.commands.info.PartitionNamesInfo;
import com.google.common.collect.Lists;
import org.apache.iceberg.Snapshot;
import org.apache.iceberg.Table;
import java.util.List;
import java.util.Map;
import java.util.Optional;
/**
* Iceberg rollback to snapshot action implementation.
* This action rolls back the Iceberg table to a specific snapshot identified by
* snapshot ID.
*/
public class IcebergRollbackToSnapshotAction extends BaseIcebergAction {
public static final String SNAPSHOT_ID = "snapshot_id";
public IcebergRollbackToSnapshotAction(Map<String, String> properties,
Optional<PartitionNamesInfo> partitionNamesInfo,
Optional<Expression> whereCondition,
IcebergExternalTable icebergTable) {
super("rollback_to_snapshot", properties, partitionNamesInfo, whereCondition, icebergTable);
}
@Override
protected void registerIcebergArguments() {
// Register snapshot_id as a required parameter
namedArguments.registerRequiredArgument(SNAPSHOT_ID,
"Snapshot ID to rollback to",
ArgumentParsers.positiveLong(SNAPSHOT_ID));
}
@Override
protected void validateIcebergAction() throws UserException {
// Iceberg rollback_to_snapshot procedures don't support partitions or where
// conditions
validateNoPartitions();
validateNoWhereCondition();
}
@Override
protected List<String> executeAction(TableIf table) throws UserException {
Table icebergTable = ((IcebergExternalTable) table).getIcebergTable();
Long targetSnapshotId = namedArguments.getLong(SNAPSHOT_ID);
Snapshot targetSnapshot = icebergTable.snapshot(targetSnapshotId);
if (targetSnapshot == null) {
throw new UserException("Snapshot " + targetSnapshotId + " not found in table " + icebergTable.name());
}
try {
Snapshot previousSnapshot = icebergTable.currentSnapshot();
Long previousSnapshotId = previousSnapshot != null ? previousSnapshot.snapshotId() : null;
if (previousSnapshot != null && previousSnapshot.snapshotId() == targetSnapshotId) {
return Lists.newArrayList(
String.valueOf(previousSnapshotId),
String.valueOf(targetSnapshotId)
);
}
icebergTable.manageSnapshots().rollbackTo(targetSnapshotId).commit();
// invalid iceberg catalog table cache.
Env.getCurrentEnv().getExtMetaCacheMgr().invalidateTableCache((ExternalTable) table);
return Lists.newArrayList(
String.valueOf(previousSnapshotId),
String.valueOf(targetSnapshotId)
);
} catch (Exception e) {
throw new UserException("Failed to rollback to snapshot " + targetSnapshotId + ": " + e.getMessage(), e);
}
}
@Override
protected List<Column> getResultSchema() {
return Lists.newArrayList(
new Column("previous_snapshot_id", Type.BIGINT, false,
"ID of the snapshot that was current before the rollback operation"),
new Column("current_snapshot_id", Type.BIGINT, false,
"ID of the snapshot that is now current after rolling back to the specified snapshot"));
}
@Override
public String getDescription() {
return "Rollback Iceberg table to a specific snapshot";
}
}