public byte[] Read(Timestamp time, string url)
{
if (_entries.ContainsKey(url))
{
return(_entries[url].Content);
}
byte[] content;
if (url.StartsWith(interopTag))
{
url = url.Substring(interopTag.Length);
var args = url.Split('/');
var platformName = args[0];
var chainName = args[1];
if (Nexus.PlatformExists(Nexus.RootStorage, platformName))
{
args = args.Skip(2).ToArray();
content = ReadChainOracle(platformName, chainName, args);
}
else
{
throw new OracleException("invalid oracle platform: " + platformName);
}
}
else
if (url.StartsWith(priceTag))
{
url = url.Substring(priceTag.Length);
if (url.Contains('/'))
{
throw new OracleException("invalid oracle price request");
}
var baseSymbol = url;
if (!Nexus.TokenExists(Nexus.RootStorage, baseSymbol))
{
throw new OracleException("unknown token: " + baseSymbol);
}
var price = PullPrice(time, baseSymbol);
var val = UnitConversion.ToBigInteger(price, DomainSettings.FiatTokenDecimals);
content = val.ToUnsignedByteArray();
}
else
{
content = PullData(time, url);
}
var entry = new OracleEntry(url, content);
_entries[url] = entry;
return(content);
}
private void CacheOracleData <T>(string url, T content)
{
var value = Serialization.Serialize(content);
if (value == null)
{
throw new OracleException($"Serialized value can't be null, url: {url}");
}
var entry = new OracleEntry(url, value);
lock (_txEntries)
{
_txEntries[url] = entry;
}
}
public byte[] Read(string url)
{
if (_entries.ContainsKey(url))
{
return(_entries[url].Content);
}
byte[] content;
if (url.StartsWith(interopTag))
{
url = url.Substring(interopTag.Length);
var args = url.Split('/');
var platformName = args[0];
if (Nexus.PlatformExists(platformName))
{
args = args.Skip(1).ToArray();
return(ReadChainOracle(platformName, args));
}
else
{
throw new OracleException("invalid oracle platform: " + platformName);
}
}
else
if (url.StartsWith(priceTag))
{
url = url.Substring(priceTag.Length);
var symbols = url.Split('/');
if (symbols.Length < 1 || symbols.Length > 2)
{
throw new OracleException("invalid oracle price request");
}
var baseSymbol = symbols[0];
var quoteSymbol = symbols.Length > 1 ? symbols[1] : Nexus.FiatTokenSymbol;
if (!Nexus.TokenExists(baseSymbol))
{
throw new OracleException("unknown token: " + baseSymbol);
}
if (!Nexus.TokenExists(quoteSymbol))
{
throw new OracleException("unknown token: " + quoteSymbol);
}
var tokenInfo = Nexus.GetTokenInfo(quoteSymbol);
var price = PullPrice(baseSymbol, quoteSymbol);
var val = UnitConversion.ToBigInteger(price, tokenInfo.Decimals);
return(val.ToUnsignedByteArray());
}
else
{
content = PullData(url);
}
var entry = new OracleEntry(url, content);
_entries[url] = entry;
return(content);
}