protected void InvokeChainEvent(object sender, RawChainEventArgs e)
{
if (this.eventReceived != null)
{
this.eventReceived(this, TransformChainEvent(e));
}
}
protected virtual void NotifyContractEventReceived(object sender, RawChainEventArgs e)
{
if (e.ContractAddress.Equals(this.Address))
{
InvokeChainEvent(sender, e);
}
}
protected override EvmChainEventArgs TransformChainEvent(RawChainEventArgs e)
{
if (e.Topics == null)
{
throw new ArgumentNullException("topics");
}
for (int i = 0; i < e.Topics.Length; i++)
{
// Remove 0x
e.Topics[i] = e.Topics[i].Substring(2);
}
// First topic is the signature of event itself
string eventName;
if (!this.topicToEventName.TryGetValue(e.Topics[0], out eventName))
{
throw new EvmException($"Unknown topic {e.Topics[0]}, is the ABI out of sync with the contract?");
}
return(new EvmChainEventArgs(
e.ContractAddress,
e.CallerAddress,
e.BlockHeight,
e.Data,
eventName,
e.Topics
));
}
private void ReadClientOnEventReceived(object sender, JsonRpcEventData e)
{
RawChainEventArgs rawChainEventArgs =
new RawChainEventArgs(
e.ContractAddress,
e.CallerAddress,
UInt64.Parse(e.BlockHeight),
e.Data,
e.Topics
);
this.ChainEventReceived?.Invoke(this, rawChainEventArgs);
}
protected override ChainEventArgs TransformChainEvent(RawChainEventArgs e)
{
string jsonRpcEventString = Encoding.UTF8.GetString(e.Data);
JsonRpcEvent jsonRpcEvent = JsonConvert.DeserializeObject <JsonRpcEvent>(jsonRpcEventString);
byte[] eventData = Encoding.UTF8.GetBytes(jsonRpcEvent.Data);
return(new ChainEventArgs(
e.ContractAddress,
e.CallerAddress,
e.BlockHeight,
eventData,
jsonRpcEvent.Method
));
}
protected abstract TChainEvent TransformChainEvent(RawChainEventArgs e);
protected void InvokeChainEvent(object sender, RawChainEventArgs e)
{
this.ContractEventReceived?.Invoke(this, TransformChainEvent(e));
}