IcebergRollbackToTimestampAction.java

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package org.apache.doris.datasource.iceberg.action;

import org.apache.doris.catalog.TableIf;
import org.apache.doris.common.DdlException;
import org.apache.doris.common.UserException;
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 java.util.List;
import java.util.Map;
import java.util.Optional;

/**
 * Iceberg rollback to timestamp action implementation.
 * This action rolls back the Iceberg table to the snapshot that was current
 * at a specific timestamp.
 */
public class IcebergRollbackToTimestampAction extends BaseIcebergAction {
    public static final String TIMESTAMP = "timestamp";

    public IcebergRollbackToTimestampAction(Map<String, String> properties,
            Optional<PartitionNamesInfo> partitionNamesInfo,
            Optional<Expression> whereCondition,
            IcebergExternalTable icebergTable) {
        super("rollback_to_timestamp", properties, partitionNamesInfo, whereCondition, icebergTable);
    }

    @Override
    protected void registerIcebergArguments() {
        // Create a custom timestamp parser that supports both ISO datetime and
        // millisecond formats
        namedArguments.registerRequiredArgument(TIMESTAMP,
                "A timestamp to rollback to (ISO datetime 'yyyy-MM-ddTHH:mm:ss' or milliseconds since epoch)",
                value -> {
                    if (value == null || value.trim().isEmpty()) {
                        throw new IllegalArgumentException("timestamp cannot be empty");
                    }

                    String trimmed = value.trim();

                    // Try to parse as milliseconds first
                    try {
                        long timestampMs = Long.parseLong(trimmed);
                        if (timestampMs < 0) {
                            throw new IllegalArgumentException("Timestamp must be non-negative: " + timestampMs);
                        }
                        return trimmed;
                    } catch (NumberFormatException e) {
                        // If not a number, try as ISO datetime format
                        try {
                            java.time.LocalDateTime.parse(trimmed,
                                    java.time.format.DateTimeFormatter.ISO_LOCAL_DATE_TIME);
                            return trimmed;
                        } catch (java.time.format.DateTimeParseException dte) {
                            throw new IllegalArgumentException("Invalid timestamp format. Expected ISO datetime "
                                    + "(yyyy-MM-ddTHH:mm:ss) or timestamp in milliseconds: " + trimmed);
                        }
                    }
                });
    }

    @Override
    protected void validateIcebergAction() throws UserException {
        // Iceberg rollback_to_timestamp procedures don't support partitions or where
        // conditions
        validateNoPartitions();
        validateNoWhereCondition();
    }

    @Override
    protected List<String> executeAction(TableIf table) throws UserException {
        throw new DdlException("Iceberg rollback_to_timestamp procedure is not implemented yet");
    }

    @Override
    public String getDescription() {
        return "Rollback Iceberg table to the snapshot that was current at a specific timestamp";
    }
}