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// first, download the gossip data | |
print("Sending rapid gossip sync request…"); | |
var request = URLRequest(url: URL(string: "https://rapidsync.lightningdevkit.org/snapshot/0")!) | |
request.httpMethod = "GET" | |
let startA = DispatchTime.now() | |
let (data, _) = try await URLSession.shared.data(for: request) | |
let finishA = DispatchTime.now() | |
let elapsedA = Double(finishA.uptimeNanoseconds-startA.uptimeNanoseconds)/1_000_000_000 | |
print("Received rapid gossip sync response: \(data.count) bytes! Time: \(elapsedA)s"); | |
let reversedGenesisHashHex = "6fe28c0ab6f1b372c1a6a246ae63f74f931e8365e15a089c68d6190000000000" | |
let reversedGenesisHash = PolarIntegrationSample.hexStringToBytes(hexString: reversedGenesisHashHex)! | |
let logger = LDKTraitImplementations.PolarLogger() | |
let networkGraph = NetworkGraph(genesis_hash: reversedGenesisHash, logger: logger) | |
let rapidSync = RapidGossipSync(network_graph: networkGraph) | |
let gossipDataRaw = [UInt8](data) | |
print("Applying rapid sync data…") | |
let startB = DispatchTime.now() | |
let timestamp = rapidSync.update_network_graph(update_data: gossipDataRaw) | |
if let error = timestamp.getError() { | |
print("error! type: \(error.getValueType())") | |
let specificError = error.getValueAsLightningError() | |
print("details: \(specificError?.get_err())") | |
} | |
let finishB = DispatchTime.now() | |
let elapsedB = Double(finishB.uptimeNanoseconds-startB.uptimeNanoseconds)/1_000_000_000 | |
print("Applied rapid sync data: \(timestamp.getValue())! Time: \(elapsedB)s") | |
print("Measuring graph size…") | |
let startC = DispatchTime.now() | |
let graphBytes = networkGraph.write() | |
let finishC = DispatchTime.now() | |
let elapsedC = Double(finishC.uptimeNanoseconds-startC.uptimeNanoseconds)/1_000_000_000 | |
print("Network graph size: \(graphBytes.count)! Time: \(elapsedC)s") |
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