Matt Bruce
2a42e3dba0
Summary: - Sources: update Audit, Helpers, Migrations (+2 more) Stats: - 29 files changed, 471 insertions(+), 25 deletions(-)
49 lines
1.9 KiB
Swift
49 lines
1.9 KiB
Swift
import Foundation
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/// Migration-specific error types.
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///
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/// These errors describe why a migration failed or could not run, and are used
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/// in ``MigrationResult`` for reporting.
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public enum MigrationError: Error, Sendable, Equatable {
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/// Validation failed before migration could run.
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case validationFailed(String)
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/// Transformation failed while converting source to destination.
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case transformationFailed(String)
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/// Underlying storage error occurred.
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case storageFailed(StorageError)
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/// Conditional migration criteria were not met.
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case conditionalMigrationFailed
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/// A migration is already in progress for the key.
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case migrationInProgress
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/// No source data was found to migrate.
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case sourceDataNotFound
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/// Source and destination types are incompatible.
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case incompatibleTypes(String)
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/// Aggregation failed while combining multiple sources.
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case aggregationFailed(String)
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}
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extension MigrationError: LocalizedError {
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/// Localized description for display or logging.
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public var errorDescription: String? {
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switch self {
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case .validationFailed(let message):
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return "Migration validation failed: \(message)"
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case .transformationFailed(let message):
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return "Data transformation failed: \(message)"
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case .storageFailed(let storageError):
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return "Storage operation failed: \(storageError.localizedDescription)"
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case .conditionalMigrationFailed:
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return "Conditional migration criteria not met"
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case .migrationInProgress:
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return "Migration already in progress"
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case .sourceDataNotFound:
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return "No data found in migration source"
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case .incompatibleTypes(let message):
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return "Type incompatibility: \(message)"
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case .aggregationFailed(let message):
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return "Data aggregation failed: \(message)"
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}
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}
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}
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