public async Task <PubKey> JoinFederationAsync(JoinFederationRequestModel request, CancellationToken cancellationToken)
{
// Get the address pub key hash.
BitcoinAddress address = BitcoinAddress.Create(request.CollateralAddress, this.counterChainSettings.CounterChainNetwork);
KeyId addressKey = PayToPubkeyHashTemplate.Instance.ExtractScriptPubKeyParameters(address.ScriptPubKey);
// Get mining key.
var keyTool = new KeyTool(this.nodeSettings.DataFolder);
Key minerKey = keyTool.LoadPrivateKey();
if (minerKey == null)
{
throw new Exception($"The private key file ({KeyTool.KeyFileDefaultName}) has not been configured or is not present.");
}
var expectedCollateralAmount = CollateralFederationMember.GetCollateralAmountForPubKey(this.network, minerKey.PubKey);
var collateralAmount = new Money(expectedCollateralAmount, MoneyUnit.BTC);
var joinRequest = new JoinFederationRequest(minerKey.PubKey, collateralAmount, addressKey);
// Populate the RemovalEventId.
var collateralFederationMember = new CollateralFederationMember(minerKey.PubKey, false, joinRequest.CollateralAmount, request.CollateralAddress);
byte[] federationMemberBytes = (this.network.Consensus.ConsensusFactory as CollateralPoAConsensusFactory).SerializeFederationMember(collateralFederationMember);
Poll poll = this.votingManager.GetApprovedPolls().FirstOrDefault(x => x.IsExecuted &&
x.VotingData.Key == VoteKey.KickFederationMember && x.VotingData.Data.SequenceEqual(federationMemberBytes));
joinRequest.RemovalEventId = (poll == null) ? Guid.Empty : new Guid(poll.PollExecutedBlockData.Hash.ToBytes().TakeLast(16).ToArray());
// Get the signature by calling the counter-chain "signmessage" API.
var signMessageRequest = new SignMessageRequest()
{
Message = joinRequest.SignatureMessage,
WalletName = request.CollateralWalletName,
Password = request.CollateralWalletPassword,
ExternalAddress = request.CollateralAddress
};
var walletClient = new WalletClient(this.loggerFactory, this.httpClientFactory, $"http://{this.counterChainSettings.CounterChainApiHost}", this.counterChainSettings.CounterChainApiPort);
string signature = await walletClient.SignMessageAsync(signMessageRequest, cancellationToken);
if (signature == null)
{
throw new Exception("The call to sign the join federation request failed. It could have timed-out or the counter chain node is offline.");
}
joinRequest.AddSignature(signature);
IWalletTransactionHandler walletTransactionHandler = this.fullNode.NodeService <IWalletTransactionHandler>();
var encoder = new JoinFederationRequestEncoder(this.loggerFactory);
JoinFederationRequestResult result = JoinFederationRequestBuilder.BuildTransaction(walletTransactionHandler, this.network, joinRequest, encoder, request.WalletName, request.WalletAccount, request.WalletPassword);
if (result.Transaction == null)
{
throw new Exception(result.Errors);
}
IWalletService walletService = this.fullNode.NodeService <IWalletService>();
await walletService.SendTransaction(new SendTransactionRequest(result.Transaction.ToHex()), cancellationToken);
return(minerKey.PubKey);
}
public async Task <PubKey> JoinFederationAsync(JoinFederationRequestModel request, CancellationToken cancellationToken)
{
// Wait until the node is synced before joining.
if (this.initialBlockDownloadState.IsInitialBlockDownload())
{
throw new Exception($"Please wait until the node is synced with the network before attempting to join the federation.");
}
// First ensure that this collateral address isnt already present in the federation.
if (this.federationManager.GetFederationMembers().IsCollateralAddressRegistered(request.CollateralAddress))
{
throw new Exception($"The provided collateral address '{request.CollateralAddress}' is already present in the federation.");
}
// Get the address pub key hash.
BitcoinAddress address = BitcoinAddress.Create(request.CollateralAddress, this.counterChainSettings.CounterChainNetwork);
KeyId addressKey = PayToPubkeyHashTemplate.Instance.ExtractScriptPubKeyParameters(address.ScriptPubKey);
// Get mining key.
var keyTool = new KeyTool(this.nodeSettings.DataFolder);
Key minerKey = keyTool.LoadPrivateKey();
if (minerKey == null)
{
throw new Exception($"The private key file ({KeyTool.KeyFileDefaultName}) has not been configured or is not present.");
}
var expectedCollateralAmount = CollateralFederationMember.GetCollateralAmountForPubKey(this.network, minerKey.PubKey);
var joinRequest = new JoinFederationRequest(minerKey.PubKey, new Money(expectedCollateralAmount, MoneyUnit.BTC), addressKey);
// Populate the RemovalEventId.
SetLastRemovalEventId(joinRequest, GetFederationMemberBytes(joinRequest, this.network, this.counterChainSettings.CounterChainNetwork), this.votingManager);
// Get the signature by calling the counter-chain "signmessage" API.
var signMessageRequest = new SignMessageRequest()
{
Message = joinRequest.SignatureMessage,
WalletName = request.CollateralWalletName,
Password = request.CollateralWalletPassword,
ExternalAddress = request.CollateralAddress
};
var walletClient = new WalletClient(this.httpClientFactory, $"http://{this.counterChainSettings.CounterChainApiHost}", this.counterChainSettings.CounterChainApiPort);
try
{
string signature = await walletClient.SignMessageAsync(signMessageRequest, cancellationToken);
joinRequest.AddSignature(signature);
}
catch (Exception err)
{
throw new Exception($"The call to sign the join federation request failed: '{err.Message}'.");
}
IWalletTransactionHandler walletTransactionHandler = this.fullNode.NodeService <IWalletTransactionHandler>();
var encoder = new JoinFederationRequestEncoder();
JoinFederationRequestResult result = JoinFederationRequestBuilder.BuildTransaction(walletTransactionHandler, this.network, joinRequest, encoder, request.WalletName, request.WalletAccount, request.WalletPassword);
if (result.Transaction == null)
{
throw new Exception(result.Errors);
}
IWalletService walletService = this.fullNode.NodeService <IWalletService>();
await walletService.SendTransaction(new SendTransactionRequest(result.Transaction.ToHex()), cancellationToken);
return(minerKey.PubKey);
}