public override async Task <string> GetCredentialsAsync(
VASPId vaspId,
VASPCredentialsRef vaspCredentialsRef,
ConfirmationLevel minimalConfirmationLevel = default)
{
var vaspCredentialsRefString = vaspCredentialsRef.ToString();
if (!_vaspCredentialsRefRegex.IsMatch(vaspCredentialsRefString))
{
throw new FormatException("Specified VASP credentials ref is not properly formatted to be used with a VASP directory.");
}
var credentialsInsertedEventHandler = Web3.Eth.GetEvent <CredentialsInsertedEvent>(ContractAddress);
var credentialsInsertedEventFilter = credentialsInsertedEventHandler.CreateFilterInput
(
firstIndexedParameterValue: (byte[])vaspId,
secondIndexedParameterValue: vaspCredentialsRefString.HexToByteArray(),
fromBlock: BlockParameter.CreateEarliest(),
toBlock: await Web3.GetBestTrustedBlockAsync(minimalConfirmationLevel)
);
var latestCredentials = (await credentialsInsertedEventHandler.GetAllChanges(credentialsInsertedEventFilter))
.OrderBy(x => x.Log.BlockNumber)
.Select(x => x.Event.Credentials)
.LastOrDefault() ?? string.Empty;
return(latestCredentials);
}
public static async Task <bool> VASPIsRegisteredAsync(
this IVASPDirectoryClient vaspDirectory,
VASPId vaspId,
ConfirmationLevel minimalConfirmationLevel = default)
{
var refAndHash = await vaspDirectory.GetCredentialsRefAndHashAsync(vaspId, minimalConfirmationLevel);
return(VASPIsRegistered(refAndHash));
}
public static async Task <(bool VASPIsRegistered, string Credentials)> TryGetCredentialsAsync(
this IVASPDirectoryClient vaspDirectory,
VASPId vaspId,
ConfirmationLevel minimalConfirmationLevel = default)
{
var(vaspIsRegistered, (@ref, _)) =
await vaspDirectory.TryGetCredentialsRefAndHashAsync(vaspId, minimalConfirmationLevel);
var credentials =
vaspIsRegistered ? await vaspDirectory.GetCredentialsAsync(vaspId, @ref, minimalConfirmationLevel) : string.Empty;
return(vaspIsRegistered, credentials);
}
public override async Task <VASPCredentialsRefAndHash> GetCredentialsRefAndHashAsync(
VASPId vaspId,
ConfirmationLevel minimalConfirmationLevel = default)
{
var vaspCredentialsRefAndHash = await base.GetCredentialsRefAndHashAsync(vaspId, minimalConfirmationLevel);
var(@ref, hash) = vaspCredentialsRefAndHash;
if (VASPCredentialsRef.IsEmpty(@ref) != VASPCredentialsHash.IsEmpty(hash))
{
throw new Exception("Smart contract returned an unexpected combination of VASP credentials reference and hash.");
}
return(vaspCredentialsRefAndHash);
}
public virtual async Task <VASPCredentialsRefAndHash> GetCredentialsRefAndHashAsync(
VASPId vaspId,
ConfirmationLevel minimalConfirmationLevel = default)
{
var callResult = await CallWithComplexResultAsync
(
new GetCredentialsRefCall { VASPId = vaspId },
minimalConfirmationLevel
);
return(new VASPCredentialsRefAndHash
(
new VASPCredentialsHash(callResult.CredentialsHashBytes),
new VASPCredentialsRef(callResult.CredentialsRefString)
));
}
public static bool IsEmpty(
VASPId vaspId)
{
return(ByteArray <Digest> .IsEmpty(vaspId._value));
}
public bool Equals(
VASPId other)
{
return(_value.Equals(other._value));
}
public abstract Task <string> GetCredentialsAsync(
VASPId vaspId,
VASPCredentialsRef vaspCredentialsRef,
ConfirmationLevel minimalConfirmationLevel = default);