56 lines
2.0 KiB
Swift
56 lines
2.0 KiB
Swift
//
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// UpdateChainTipAction.swift
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//
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//
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// Created by Lukáš Korba on 01.08.2023.
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//
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import Foundation
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final class UpdateChainTipAction {
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let rustBackend: ZcashRustBackendWelding
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var downloader: BlockDownloader
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var service: LightWalletService
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var latestBlocksDataProvider: LatestBlocksDataProvider
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let logger: Logger
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init(container: DIContainer) {
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service = container.resolve(LightWalletService.self)
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downloader = container.resolve(BlockDownloader.self)
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rustBackend = container.resolve(ZcashRustBackendWelding.self)
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latestBlocksDataProvider = container.resolve(LatestBlocksDataProvider.self)
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logger = container.resolve(Logger.self)
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}
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func updateChainTip(_ context: ActionContext, time: TimeInterval) async throws {
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let latestBlockHeight = try await service.latestBlockHeight()
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logger.debug("Latest block height is \(latestBlockHeight)")
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try await rustBackend.updateChainTip(height: Int32(latestBlockHeight))
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await context.update(lastChainTipUpdateTime: time)
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await latestBlocksDataProvider.update(latestBlockHeight)
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}
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}
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extension UpdateChainTipAction: Action {
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var removeBlocksCacheWhenFailed: Bool { false }
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func run(with context: ActionContext, didUpdate: @escaping (CompactBlockProcessor.Event) async -> Void) async throws -> ActionContext {
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let lastChainTipUpdateTime = await context.lastChainTipUpdateTime
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let now = Date().timeIntervalSince1970
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// Update chain tip can be called from different contexts
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if await context.prevState == .updateSubtreeRoots || now - lastChainTipUpdateTime > 600 {
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await downloader.stopDownload()
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try await updateChainTip(context, time: now)
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await context.update(state: .clearCache)
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} else if await context.prevState == .enhance {
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await context.update(state: .download)
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}
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return context
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}
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func stop() async { }
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}
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