mirror of
https://github.com/cypherstack/stack_wallet.git
synced 2024-12-23 03:49:22 +00:00
330 lines
8.5 KiB
Dart
330 lines
8.5 KiB
Dart
import 'dart:async';
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import 'dart:io';
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import 'package:flutter/foundation.dart';
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import 'package:sqlite3/sqlite3.dart';
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import '../../electrumx_rpc/electrumx_client.dart';
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import '../../utilities/logger.dart';
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import '../../utilities/stack_file_system.dart';
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/// Temporary debugging log function for this file
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void _debugLog(Object? object) {
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if (kDebugMode) {
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Logging.instance.log(
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object,
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level: LogLevel.Fatal,
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);
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}
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}
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/// Wrapper class for [FiroCache] as [FiroCache] should eventually be handled in a
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/// background isolate and [FiroCacheCoordinator] should manage that isolate
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abstract class FiroCacheCoordinator {
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static Future<void> init() => _FiroCache.init();
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static Future<void> runFetchAndUpdateSparkAnonSetCacheForGroupId(
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int groupId,
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ElectrumXClient client,
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) async {
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final blockhashResult =
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await FiroCacheCoordinator.getLatestSetInfoForGroupId(
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groupId,
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);
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final blockHash = blockhashResult?.blockHash ?? "";
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final json = await client.getSparkAnonymitySet(
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coinGroupId: groupId.toString(),
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startBlockHash: blockHash,
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);
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await _FiroCache._updateWith(json, groupId);
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}
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static Future<ResultSet> getSetCoinsForGroupId(
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int groupId, {
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int? newerThanTimeStamp,
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}) async {
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return await _FiroCache._getSetCoinsForGroupId(
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groupId,
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newerThanTimeStamp: newerThanTimeStamp,
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);
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}
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static Future<
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({
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String blockHash,
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String setHash,
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int timestampUTC,
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})?> getLatestSetInfoForGroupId(
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int groupId,
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) async {
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final result = await _FiroCache._getLatestSetInfoForGroupId(groupId);
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if (result.isEmpty) {
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return null;
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}
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return (
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blockHash: result.first["blockHash"] as String,
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setHash: result.first["setHash"] as String,
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timestampUTC: result.first["timestampUTC"] as int,
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);
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}
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}
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abstract class _FiroCache {
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static const String sqliteDbFileName = "firo_ex_cache.sqlite3";
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static Database? _db;
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static Database get db {
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if (_db == null) {
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throw Exception(
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"FiroCache.init() must be called before accessing FiroCache.db!",
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);
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}
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return _db!;
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}
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static Future<void>? _initFuture;
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static Future<void> init() => _initFuture ??= _init();
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static Future<void> _init() async {
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final sqliteDir = await StackFileSystem.applicationSQLiteDirectory();
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final file = File("${sqliteDir.path}/$sqliteDbFileName");
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final exists = await file.exists();
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if (!exists) {
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await _createDb(file.path);
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}
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_db = sqlite3.open(
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file.path,
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mode: OpenMode.readWrite,
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);
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}
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static Future<void> _createDb(String file) async {
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final db = sqlite3.open(
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file,
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mode: OpenMode.readWriteCreate,
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);
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db.execute(
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"""
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CREATE TABLE SparkSet (
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id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT UNIQUE,
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blockHash TEXT NOT NULL,
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setHash TEXT NOT NULL,
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groupId INTEGER NOT NULL,
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UNIQUE (blockHash, setHash, groupId)
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);
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CREATE TABLE SparkCoin (
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id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT UNIQUE,
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serialized TEXT NOT NULL,
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txHash TEXT NOT NULL,
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context TEXT NOT NULL,
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UNIQUE(serialized, txHash, context)
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);
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CREATE TABLE SparkSetCoins (
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id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT UNIQUE,
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timestampUTC INTEGER NOT NULL,
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setId INTEGER NOT NULL,
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coinId INTEGER NOT NULL,
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FOREIGN KEY (setId) REFERENCES SparkSet(id),
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FOREIGN KEY (coinId) REFERENCES SparkCoin(id)
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);
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""",
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);
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db.dispose();
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}
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// ===========================================================================
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// =============== Spark anonymity set queries ===============================
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static Future<ResultSet> _getSetCoinsForGroupId(
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int groupId, {
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int? newerThanTimeStamp,
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}) async {
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String query = """
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SELECT sc.id, sc.serialized, sc.txHash, sc.context
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FROM SparkSetCoins AS ssc
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JOIN SparkSet AS ss ON ssc.setId = ss.id
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JOIN SparkCoin AS sc ON ssc.coinId = sc.id
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WHERE ss.groupId = $groupId
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""";
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if (newerThanTimeStamp != null) {
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query += " AND ssc.timestampUTC"
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" > $newerThanTimeStamp";
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}
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return db.select("$query;");
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}
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static Future<ResultSet> _getLatestSetInfoForGroupId(
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int groupId,
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) async {
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final query = """
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SELECT ss.blockHash, ss.setHash, ssc.timestampUTC
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FROM SparkSet ss
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JOIN SparkSetCoins ssc ON ss.id = ssc.setId
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WHERE ss.groupId = $groupId
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ORDER BY ssc.timestampUTC DESC
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LIMIT 1;
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""";
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return db.select("$query;");
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}
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// ===========================================================================
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// ===========================================================================
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static int _upCount = 0;
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/// update the sqlite cache
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/// Expected json format:
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/// {
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/// "blockHash": "someBlockHash",
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/// "setHash": "someSetHash",
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/// "coins": [
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/// ["serliazed1", "hash1", "context1"],
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/// ["serliazed2", "hash2", "context2"],
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/// ...
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/// ["serliazed3", "hash3", "context3"],
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/// ["serliazed4", "hash4", "context4"],
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/// ],
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/// }
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///
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/// returns true if successful, otherwise false
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static Future<bool> _updateWith(
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Map<String, dynamic> json,
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int groupId,
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) async {
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final start = DateTime.now();
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_upCount++;
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final blockHash = json["blockHash"] as String;
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final setHash = json["setHash"] as String;
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_debugLog(
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"$_upCount _updateWith() called where groupId=$groupId,"
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" blockHash=$blockHash, setHash=$setHash",
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);
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final checkResult = db.select(
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"""
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SELECT *
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FROM SparkSet
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WHERE blockHash = ? AND setHash = ? AND groupId = ?;
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""",
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[
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blockHash,
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setHash,
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groupId,
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],
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);
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_debugLog("$_upCount _updateWith() called where checkResult=$checkResult");
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if (checkResult.isNotEmpty) {
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_debugLog(
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"$_upCount _updateWith() duration = ${DateTime.now().difference(start)}",
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);
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// already up to date
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return true;
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}
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if ((json["coins"] as List).isEmpty) {
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_debugLog("$_upCount _updateWith() called where json[coins] is Empty");
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_debugLog(
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"$_upCount _updateWith() duration = ${DateTime.now().difference(start)}",
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);
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// no coins to actually insert
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return true;
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}
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final coins = (json["coins"] as List)
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.map(
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(e) => [
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e[0] as String,
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e[1] as String,
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e[2] as String,
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],
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)
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.toList();
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final timestamp = DateTime.now().toUtc().millisecondsSinceEpoch ~/ 1000;
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db.execute("BEGIN;");
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try {
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db.execute(
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"""
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INSERT INTO SparkSet (blockHash, setHash, groupId)
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VALUES (?, ?, ?);
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""",
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[blockHash, setHash, groupId],
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);
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final setId = db.lastInsertRowId;
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for (final coin in coins) {
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int coinId;
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try {
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db.execute(
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"""
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INSERT INTO SparkCoin (serialized, txHash, context)
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VALUES (?, ?, ?);
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""",
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coin,
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);
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coinId = db.lastInsertRowId;
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} on SqliteException catch (e) {
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if (e.extendedResultCode == 2067) {
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final result = db.select(
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"""
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SELECT id
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FROM SparkCoin
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WHERE serialized = ? AND txHash = ? AND context = ?;
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""",
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coin,
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);
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coinId = result.first["id"] as int;
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} else {
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rethrow;
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}
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}
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db.execute(
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"""
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INSERT INTO SparkSetCoins (timestampUTC, setId, coinId)
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VALUES (?, ?, ?);
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""",
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[timestamp, setId, coinId],
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);
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}
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db.execute("COMMIT;");
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_debugLog("$_upCount _updateWith() COMMITTED");
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_debugLog(
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"$_upCount _updateWith() duration = ${DateTime.now().difference(start)}",
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);
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return true;
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} catch (e, s) {
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db.execute("ROLLBACK;");
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_debugLog("$_upCount _updateWith() ROLLBACK");
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_debugLog(
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"$_upCount _updateWith() duration = ${DateTime.now().difference(start)}",
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);
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// NOTE THIS LOGGER MUST BE CALLED ON MAIN ISOLATE FOR NOW
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Logging.instance.log(
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"$e\n$s",
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level: LogLevel.Error,
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);
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}
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return false;
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}
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}
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