/// <summary>
/// Initialize the BlockStore
/// <para>
/// If StoreTip is <c>null</c>, the store is out of sync. This can happen when:</para>
/// <list>
/// <item>1. The node crashed.</item>
/// <item>2. The node was not closed down properly.</item>
/// </list>
/// <para>
/// To recover we walk back the chain until a common block header is found
/// and set the BlockStore's StoreTip to that.
/// </para>
/// </summary>
public async Task InitializeAsync()
{
this.logger.LogTrace("()");
if (this.storeSettings.ReIndex)
{
throw new NotImplementedException();
}
this.StoreTip = this.Chain.GetBlock(this.BlockRepository.BlockHash);
if (this.StoreTip == null)
{
var blockStoreResetList = new List <uint256>();
Block resetBlock = await this.BlockRepository.GetAsync(this.BlockRepository.BlockHash).ConfigureAwait(false);
uint256 resetBlockHash = resetBlock.GetHash();
while (this.Chain.GetBlock(resetBlockHash) == null)
{
blockStoreResetList.Add(resetBlockHash);
if (resetBlock.Header.HashPrevBlock == this.Chain.Genesis.HashBlock)
{
resetBlockHash = this.Chain.Genesis.HashBlock;
break;
}
resetBlock = await this.BlockRepository.GetAsync(resetBlock.Header.HashPrevBlock).ConfigureAwait(false);
Guard.NotNull(resetBlock, nameof(resetBlock));
resetBlockHash = resetBlock.GetHash();
}
ChainedBlock newTip = this.Chain.GetBlock(resetBlockHash);
await this.BlockRepository.DeleteAsync(newTip.HashBlock, blockStoreResetList).ConfigureAwait(false);
this.StoreTip = newTip;
this.logger.LogWarning("{0} Initialize recovering to block height = {1}, hash = {2}.", this.StoreName, newTip.Height, newTip.HashBlock);
}
if (this.storeSettings.TxIndex != this.BlockRepository.TxIndex)
{
if (this.StoreTip != this.Chain.Genesis)
{
throw new BlockStoreException($"You need to rebuild the {this.StoreName} database using -reindex-chainstate to change -txindex");
}
if (this.storeSettings.TxIndex)
{
await this.BlockRepository.SetTxIndexAsync(this.storeSettings.TxIndex).ConfigureAwait(false);
}
}
this.SetHighestPersistedBlock(this.StoreTip);
this.stepChain = new BlockStoreStepChain();
this.stepChain.SetNextStep(new ReorganiseBlockRepositoryStep(this, this.loggerFactory));
this.stepChain.SetNextStep(new CheckNextChainedBlockExistStep(this, this.loggerFactory));
this.stepChain.SetNextStep(new ProcessPendingStorageStep(this, this.loggerFactory));
this.stepChain.SetNextStep(new DownloadBlockStep(this, this.loggerFactory, this.dateTimeProvider));
this.StartLoop();
this.logger.LogTrace("(-)");
}
/// <summary>
/// Initialize the BlockStore
/// <para>
/// If StoreTip is <c>null</c>, the store is out of sync. This can happen when:</para>
/// <list>
/// <item>1. The node crashed.</item>
/// <item>2. The node was not closed down properly.</item>
/// </list>
/// <para>
/// To recover we walk back the chain until a common block header is found
/// and set the BlockStore's StoreTip to that.
/// </para>
/// </summary>
public async Task Initialize()
{
if (this.nodeArgs.Store.ReIndex)
{
throw new NotImplementedException();
}
this.StoreTip = this.Chain.GetBlock(this.BlockRepository.BlockHash);
if (this.StoreTip == null)
{
var blockStoreResetList = new List <uint256>();
Block resetBlock = await this.BlockRepository.GetAsync(this.BlockRepository.BlockHash);
uint256 resetBlockHash = resetBlock.GetHash();
while (this.Chain.GetBlock(resetBlockHash) == null)
{
blockStoreResetList.Add(resetBlockHash);
if (resetBlock.Header.HashPrevBlock == this.Chain.Genesis.HashBlock)
{
resetBlockHash = this.Chain.Genesis.HashBlock;
break;
}
resetBlock = await this.BlockRepository.GetAsync(resetBlock.Header.HashPrevBlock);
Guard.NotNull(resetBlock, nameof(resetBlock));
resetBlockHash = resetBlock.GetHash();
}
ChainedBlock newTip = this.Chain.GetBlock(resetBlockHash);
await this.BlockRepository.DeleteAsync(newTip.HashBlock, blockStoreResetList);
this.StoreTip = newTip;
this.storeLogger.LogWarning($"{this.name} Initialize recovering to block height = {newTip.Height} hash = {newTip.HashBlock}");
}
if (this.nodeArgs.Store.TxIndex != this.BlockRepository.TxIndex)
{
if (this.StoreTip != this.Chain.Genesis)
{
throw new BlockStoreException($"You need to rebuild the {this.name} database using -reindex-chainstate to change -txindex");
}
if (this.nodeArgs.Store.TxIndex)
{
await this.BlockRepository.SetTxIndex(this.nodeArgs.Store.TxIndex);
}
}
SetHighestPersistedBlock(this.StoreTip);
this.stepChain = new BlockStoreStepChain();
this.stepChain.SetNextStep(new ReorganiseBlockRepositoryStep(this));
this.stepChain.SetNextStep(new CheckNextChainedBlockExistStep(this));
this.stepChain.SetNextStep(new ProcessPendingStorageStep(this));
this.stepChain.SetNextStep(new DownloadBlockStep(this));
StartLoop();
}
