Matt Bruce
ac486a38bc
Summary: - Sources: Audit, Configuration, Migrations, Models, Protocols (+2 more) Stats: - 37 files changed, 256 insertions(+), 22 deletions(-)
32 lines
1.4 KiB
Swift
32 lines
1.4 KiB
Swift
import Foundation
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/// Type-erased wrapper for ``StorageMigration`` for use in catalogs and registrations.
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public struct AnyStorageMigration: Sendable {
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/// Descriptor for the migration destination key.
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public let destinationDescriptor: StorageKeyDescriptor
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private let shouldMigrateAction: @Sendable (StorageRouter, MigrationContext) async throws -> Bool
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private let migrateAction: @Sendable (StorageRouter, MigrationContext) async throws -> MigrationResult
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/// Creates a type-erased migration from a concrete migration.
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public init<M: StorageMigration>(_ migration: M) {
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self.destinationDescriptor = .from(migration.destinationKey)
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self.shouldMigrateAction = { @Sendable router, context in
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try await migration.shouldMigrate(using: router, context: context)
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}
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self.migrateAction = { @Sendable router, context in
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try await migration.migrate(using: router, context: context)
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}
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}
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/// Evaluates whether the migration should run for the given context.
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public func shouldMigrate(using router: StorageRouter, context: MigrationContext) async throws -> Bool {
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try await shouldMigrateAction(router, context)
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}
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/// Executes the migration and returns its result.
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public func migrate(using router: StorageRouter, context: MigrationContext) async throws -> MigrationResult {
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try await migrateAction(router, context)
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}
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}
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