IvmFailureClassifier.java

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// to you under the Apache License, Version 2.0 (the
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//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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package org.apache.doris.mtmv.ivm;

import java.util.Objects;
import java.util.Optional;

/**
 * Maps runtime guard failures back to stable IVM failure reasons.
 */
public final class IvmFailureClassifier {
    public static final String MIN_MAX_BOUNDARY_MSG_PREFIX = "IVM fallback: min/max boundary hit";
    public static final String NON_DETERMINISTIC_ROW_ID_MSG_PREFIX =
            "IVM fallback: delete on non-deterministic row_id";

    private IvmFailureClassifier() {
    }

    public static Optional<IvmFailureReason> classifyExecutionFailure(String detail) {
        Objects.requireNonNull(detail, "detail can not be null");
        if (detail.contains(MIN_MAX_BOUNDARY_MSG_PREFIX)) {
            return Optional.of(IvmFailureReason.MIN_MAX_BOUNDARY_HIT);
        }
        if (detail.contains(NON_DETERMINISTIC_ROW_ID_MSG_PREFIX)) {
            return Optional.of(IvmFailureReason.NON_DETERMINISTIC_ROW_ID);
        }
        return Optional.empty();
    }
}