/// <inheritdoc />
public override async Task Initialize()
{
this.lastReceivedBlock = this.chain.GetBlock(this.walletManager.LastReceivedBlock);
if (this.lastReceivedBlock == null)
{
throw new WalletException("the wallet tip was not found in the main chain");
}
// get the chain headers. This needs to be up-to-date before we really do anything
await this.WaitForChainDownloadAsync();
// subscribe to receiving blocks and transactions
BlockSubscriber sub = new BlockSubscriber(this.signals.Blocks, new BlockObserver(this.chain, this));
sub.Subscribe();
TransactionSubscriber txSub = new TransactionSubscriber(this.signals.Transactions, new TransactionObserver(this));
txSub.Subscribe();
// start syncing blocks
var bestHeightForSyncing = this.FindBestHeightForSyncing();
this.blockNotification.SyncFrom(this.chain.GetBlock(bestHeightForSyncing).HashBlock);
this.logger.LogInformation($"Tracker initialized. Syncing from {bestHeightForSyncing}.");
}
public void SubscribeSubscribesObserverToSignaler()
{
var signaler = new Mock <ISignaler <Block> >();
var observer = new BlockObserver(new Mock <IWalletSyncManager>().Object);
var blockSubscriber = new BlockSubscriber(signaler.Object, observer);
blockSubscriber.Subscribe();
signaler.Verify(s => s.Subscribe(observer), Times.Exactly(1));
}
/// <inheritdoc />
public Task Initialize()
{
// subscribe to receiving blocks and transactions
BlockSubscriber sub = new BlockSubscriber(this.signals.Blocks, new BlockObserver(this));
sub.Subscribe();
TransactionSubscriber txSub = new TransactionSubscriber(this.signals.Transactions, new TransactionObserver(this));
txSub.Subscribe();
// if there is no wallet created yet, the wallet tip is the chain tip.
if (!this.walletManager.Wallets.Any())
{
this.walletTip = this.chain.Tip;
}
else
{
this.walletTip = this.chain.GetBlock(this.walletManager.WalletTipHash);
if (this.walletTip == null && this.chain.Height > 0)
{
// the wallet tip was not found in the main chain.
// this can happen if the node crashes unexpectedly.
// to recover we need to find the first common fork
// with the best chain, as the wallet does not have a
// list of chain headers we use a BlockLocator and persist
// that in the wallet. the block locator will help finding
// a common fork and bringing the wallet back to a good
// state (behind the best chain)
var locators = this.walletManager.Wallets.First().BlockLocator;
BlockLocator blockLocator = new BlockLocator {
Blocks = locators.ToList()
};
var fork = this.chain.FindFork(blockLocator);
this.walletManager.RemoveBlocks(fork);
this.walletManager.WalletTipHash = fork.HashBlock;
this.walletTip = fork;
this.logger.LogWarning($"Wallet tip was out of sync, wallet tip reverted back to Height = {this.walletTip.Height} hash = {this.walletTip.HashBlock}.");
}
// we're looking from where to start syncing the wallets.
// we start by looking at the heights of the wallets and we start syncing from the oldest one (the smallest height).
// if for some reason we can't find a height, we look at the creation date of the wallets and we start syncing from the earliest date.
int?earliestWalletHeight = this.walletManager.Wallets.Min(w => w.AccountsRoot.Single(a => a.CoinType == this.coinType).LastBlockSyncedHeight);
if (earliestWalletHeight == null)
{
DateTimeOffset oldestWalletDate = this.walletManager.Wallets.Min(w => w.CreationTime);
this.SyncFrom(oldestWalletDate.LocalDateTime);
}
else
{
this.SyncFrom(earliestWalletHeight.Value);
}
}
return(Task.CompletedTask);
}
/// <inheritdoc />
public Task Initialize()
{
// if there is no wallet created yet, the wallet tip is the chain tip.
if (!this.walletManager.Wallets.Any())
{
this.walletTip = this.chain.Tip;
}
else
{
this.walletTip = this.chain.GetBlock(this.walletManager.WalletTipHash);
if (this.walletTip == null)
{
// the wallet tip was not found in the main chain.
// this can happen if the node crashes unexpectedly.
// to recover we need to find the first common fork
// with the best chain, as the wallet does not have a
// list of chain headers we use a BlockLocator and persist
// that in the wallet. the block locator will help finding
// a common fork and bringing the wallet back to a good
// state (behind the best chain)
var locators = this.walletManager.Wallets.First().BlockLocator;
BlockLocator blockLocator = new BlockLocator {
Blocks = locators.ToList()
};
var fork = this.chain.FindFork(blockLocator);
this.walletManager.RemoveBlocks(fork);
this.walletManager.WalletTipHash = fork.HashBlock;
this.walletTip = fork;
this.logger.LogWarning($"Wallet tip was out of sync, wallet tip reverted back to Height = {this.walletTip.Height} hash = {this.walletTip.HashBlock}.");
}
}
// subscribe to receiving blocks and transactions
BlockSubscriber sub = new BlockSubscriber(this.signals.Blocks, new BlockObserver(this));
sub.Subscribe();
TransactionSubscriber txSub = new TransactionSubscriber(this.signals.Transactions, new TransactionObserver(this));
txSub.Subscribe();
// start syncing blocks
var bestHeightForSyncing = this.FindBestHeightForSyncing();
this.blockNotification.SyncFrom(this.chain.GetBlock(bestHeightForSyncing).HashBlock);
this.logger.LogInformation($"Tracker initialized. Syncing from {bestHeightForSyncing}.");
return(Task.CompletedTask);
}
/// <inheritdoc />
public async Task Initialize()
{
// get the chain headers. This needs to be up-to-date before we really do anything
await this.WaitForChainDownloadAsync();
// subscribe to receiving blocks and transactions
BlockSubscriber sub = new BlockSubscriber(this.signals.Blocks, new BlockObserver(this.chain, this.coinType, this.walletManager));
sub.Subscribe();
TransactionSubscriber txSub = new TransactionSubscriber(this.signals.Transactions, new TransactionObserver(this.coinType, this.walletManager));
txSub.Subscribe();
// start syncing blocks
this.blockNotification.SyncFrom(this.chain.GetBlock(this.FindBestHeightForSyncing()).HashBlock);
}
/// <inheritdoc />
public async Task Initialize()
{
// get the chain headers. This needs to be up-to-date before we really do anything
await this.WaitForChainDownloadAsync();
// subscribe to receiving blocks and transactions
BlockSubscriber sub = new BlockSubscriber(this.signals.Blocks, new BlockObserver(this.chain, this));
sub.Subscribe();
TransactionSubscriber txSub = new TransactionSubscriber(this.signals.Transactions, new TransactionObserver(this));
txSub.Subscribe();
// start syncing blocks
var bestHeightForSyncing = this.FindBestHeightForSyncing();
this.SyncFrom(bestHeightForSyncing);
this.logger.LogInformation($"Tracker initialized. Syncing from {bestHeightForSyncing}.");
}
public override void Start()
{
BlockSubscriber sub = new BlockSubscriber(signals.Blocks, new BlockObserver(chain, trackerWrapper));
sub.Subscribe();
}
