public void TestCacheCoinView()
{
using (NodeContext ctx = NodeContext.Create(this))
{
Block genesis = ctx.Network.GetGenesis();
var genesisChainedHeader = new ChainedHeader(genesis.Header, ctx.Network.GenesisHash, 0);
ChainedHeader chained = this.MakeNext(genesisChainedHeader, ctx.Network);
var dateTimeProvider = new DateTimeProvider();
var cacheCoinView = new CachedCoinView(ctx.PersistentCoinView, dateTimeProvider, this.loggerFactory, new NodeStats(dateTimeProvider));
cacheCoinView.SaveChanges(new UnspentOutputs[] { new UnspentOutputs(genesis.Transactions[0].GetHash(), new Coins(genesis.Transactions[0], 0)) }, null, genesisChainedHeader.HashBlock, chained.HashBlock, chained.Height);
Assert.NotNull(cacheCoinView.FetchCoins(new[] { genesis.Transactions[0].GetHash() }).UnspentOutputs[0]);
Assert.Null(cacheCoinView.FetchCoins(new[] { new uint256() }).UnspentOutputs[0]);
Assert.Equal(chained.HashBlock, cacheCoinView.GetTipHash());
Assert.Null(ctx.PersistentCoinView.FetchCoins(new[] { genesis.Transactions[0].GetHash() }).UnspentOutputs[0]);
Assert.Equal(chained.Previous.HashBlock, ctx.PersistentCoinView.GetTipHash());
cacheCoinView.Flush();
Assert.NotNull(ctx.PersistentCoinView.FetchCoins(new[] { genesis.Transactions[0].GetHash() }).UnspentOutputs[0]);
Assert.Equal(chained.HashBlock, ctx.PersistentCoinView.GetTipHash());
//Assert.Null(ctx.PersistentCoinView.FetchCoinsAsync(new[] { new uint256() }).Result.UnspentOutputs[0]);
//var previous = chained;
//chained = MakeNext(MakeNext(genesisChainedBlock));
//chained = MakeNext(MakeNext(genesisChainedBlock));
//ctx.PersistentCoinView.SaveChangesAsync(new UnspentOutputs[0], previous.HashBlock, chained.HashBlock).Wait();
//Assert.Equal(chained.HashBlock, ctx.PersistentCoinView.GetTipHashAsync().GetAwaiter().GetResult());
//ctx.ReloadPersistentCoinView();
//Assert.Equal(chained.HashBlock, ctx.PersistentCoinView.GetTipHashAsync().GetAwaiter().GetResult());
//Assert.NotNull(ctx.PersistentCoinView.FetchCoinsAsync(new[] { genesis.Transactions[0].GetHash() }).Result.UnspentOutputs[0]);
//Assert.Null(ctx.PersistentCoinView.FetchCoinsAsync(new[] { new uint256() }).Result.UnspentOutputs[0]);
}
}
public void TestCacheCoinView()
{
using (NodeContext ctx = NodeContext.Create(this))
{
Block genesis = ctx.Network.GetGenesis();
var genesisChainedHeader = new ChainedHeader(genesis.Header, ctx.Network.GenesisHash, 0);
ChainedHeader chained = this.MakeNext(genesisChainedHeader, ctx.Network);
var dateTimeProvider = new DateTimeProvider();
var cacheCoinView = new CachedCoinView(this.network, new Checkpoints(), ctx.Coindb, dateTimeProvider, this.loggerFactory, new NodeStats(dateTimeProvider, NodeSettings.Default(this.network), new Mock <IVersionProvider>().Object), new ConsensusSettings(new NodeSettings(this.network)));
cacheCoinView.SaveChanges(new UnspentOutput[] { new UnspentOutput(new OutPoint(genesis.Transactions[0], 0), new Coins(0, genesis.Transactions[0].Outputs.First(), true)) }, new HashHeightPair(genesisChainedHeader), new HashHeightPair(chained));
Assert.NotNull(cacheCoinView.FetchCoins(new[] { new OutPoint(genesis.Transactions[0], 0) }).UnspentOutputs.Values.FirstOrDefault().Coins);
Assert.Null(cacheCoinView.FetchCoins(new[] { new OutPoint() }).UnspentOutputs.Values.FirstOrDefault().Coins);
Assert.Equal(new HashHeightPair(chained), cacheCoinView.GetTipHash());
Assert.Null(ctx.Coindb.FetchCoins(new[] { new OutPoint(genesis.Transactions[0], 0) }).UnspentOutputs.Values.FirstOrDefault().Coins);
Assert.Equal(chained.Previous.HashBlock, ctx.Coindb.GetTipHash().Hash);
cacheCoinView.Flush();
Assert.NotNull(ctx.Coindb.FetchCoins(new[] { new OutPoint(genesis.Transactions[0], 0) }).UnspentOutputs.Values.FirstOrDefault().Coins);
Assert.Equal(chained.HashBlock, ctx.Coindb.GetTipHash().Hash);
//Assert.Null(ctx.PersistentCoinView.FetchCoinsAsync(new[] { new uint256() }).Result.UnspentOutputs[0]);
//var previous = chained;
//chained = MakeNext(MakeNext(genesisChainedBlock));
//chained = MakeNext(MakeNext(genesisChainedBlock));
//ctx.PersistentCoinView.SaveChangesAsync(new UnspentOutputs[0], previous.HashBlock, chained.HashBlock).Wait();
//Assert.Equal(chained.HashBlock, ctx.PersistentCoinView.GetTipHashAsync().GetAwaiter().GetResult());
//ctx.ReloadPersistentCoinView();
//Assert.Equal(chained.HashBlock, ctx.PersistentCoinView.GetTipHashAsync().GetAwaiter().GetResult());
//Assert.NotNull(ctx.PersistentCoinView.FetchCoinsAsync(new[] { genesis.Transactions[0].GetHash() }).Result.UnspentOutputs[0]);
//Assert.Null(ctx.PersistentCoinView.FetchCoinsAsync(new[] { new uint256() }).Result.UnspentOutputs[0]);
}
}
/// <summary>
/// Before we continue to persist coindb we need to make sure the
/// store is not behind our tip, if it is we will wait to let store
/// catchup even if it means we need to block consensus form advancing
/// </summary>
/// <param name="cachedCoinView"></param>
private void WaitForBlockstore(CachedCoinView cachedCoinView)
{
if (this.chainState.BlockStoreTip != null)
{
int delaySec = 3;
int rewindDataWindow = cachedCoinView.CalculateRewindWindow();
HashHeightPair cachedCoinViewTip = cachedCoinView.GetTipHash();
while (cachedCoinViewTip.Height - rewindDataWindow + 1 > this.chainState.BlockStoreTip.Height)
{
if (this.nodeLifetime.ApplicationStopping.IsCancellationRequested)
{
// node is closing do nothing.
return;
}
// wait 3 seconds to let blockstore catch up
this.Logger.LogWarning("Store tip `{0}` is behind coindb rewind data tip `{1}` waiting {2} seconds to let store catch up", this.chainState.BlockStoreTip.Height, cachedCoinViewTip.Height - rewindDataWindow + 1, delaySec);
Task.Delay(delaySec * 1000).Wait();
}
}
}