/// <summary>
///
/// After running an instance of the Wonka engine, this method will:
///
/// 1.) Persist all data to files (metadata, rules, current data, report), zip the files, and then upload the .ZIP to IPFS
/// 2.) Create the hash of the Zip file
/// 3.) Create an entry on the ChronoLog contract (including the IPFS URL and hash of the Zip file)
///
/// <param name="poEngine">The instance of the Wonka engine that has just run a RuleTree</param>
/// <param name="poEngineInitProps">Various properties of this instance of the Wonka engine</param>
/// <param name="poRecord">This record holds the current snapshot of the data being addressed by the metadata (mentioned in WonkaRefEnvironment)</param>
/// <param name="poReport">This report holds the verbose results of running the RuleTree</param>
/// <param name="psIpfsUrl">This URL points to the IPFS node that acts as the read-only gateway</param>
/// <param name="psWriteIpfsUrl">This URL points to the IPFS node that will be used to upload the Zip file of the results</param>
/// <param name="psChronoLogContractAddr">This address points to an instance of the ChronoLog contract</param>
/// <returns>Unique name for entry in the ChronoLog contract</returns>
/// </summary>
public static async Task <string> StoreWonkaResultsAsync(this WonkaBizRulesEngine poEngine,
Wonka.Eth.Init.WonkaEthEngineInitialization poEngineInitProps,
WonkaProduct poRecord,
Wonka.Eth.Extensions.RuleTreeReport poReport,
string psIpfsUrl,
string psWriteIpfsUrl,
string psChronoLogContractAddr)
{
var RefEnv = WonkaRefEnvironment.GetInstance();
var signer = new EthereumMessageSigner();
var prodMsgXml = new WonkaProductMsgWriter().WriteWonkaMsg(new WonkaProductMessage(poRecord, true));
var inputSignature
= signer.EncodeUTF8AndSign(prodMsgXml, new EthECKey(poEngineInitProps.EthPassword));
string sUniqueChronoLogName = "WI-" + DateTime.Now.ToUniversalTime().ToEpochTime();
string sZipIpfsUrl =
await poEngine.UploadInvocationAsync(poEngineInitProps, poRecord, poReport, psIpfsUrl, psWriteIpfsUrl, sUniqueChronoLogName).ConfigureAwait(false);
var addChronoLogEventFunction =
new Wonka.Eth.Autogen.ChronoLog.AddChronoLogEventFunction()
{
UniqueName = sUniqueChronoLogName,
EType = "WONKA_INVOKE",
Desc = "", // Empty for now
Data = "", // Empty for now
Hash = inputSignature,
Url = sZipIpfsUrl
};
string sTrxHash =
await poReport.WriteToChronoLog(poEngineInitProps, psChronoLogContractAddr, addChronoLogEventFunction).ConfigureAwait(false);
return(sUniqueChronoLogName);
}
/// <summary>
///
/// This method will persist all data to files (metadata, rules, current data, report), zip the files, and then upload the .ZIP to IPFS
///
/// <param name="poEngine">The instance of the Wonka engine that has just run</param>
/// <param name="poRecord">This record holds the current snapshot of the data being addressed by the metadata (mentioned in WonkaRefEnvironment)</param>
/// <param name="poReport">This report holds the verbose results of running the RuleTree</param>
/// <param name="psUniqueChronoLogName">This will be the unique name of the ChronoLog entry</param>
/// <param name="psTmpDirectory">The directory which will hold the files to be zipped and uploaded</param>
/// <returns>IPFS Url of the Zip file</returns>
/// </summary>
public static string ZipInvocation(this WonkaBizRulesEngine poEngine, WonkaProduct poRecord, IRuleTreeReport poReport, string psUniqueChronoLogName, string psTmpDirectory = @"./tmp")
{
string sZipFile = "";
DirectoryInfo tmpDirInfo = new DirectoryInfo(psTmpDirectory);
if (!tmpDirInfo.Exists)
{
tmpDirInfo.Create();
}
var snapshotDirInfo = Directory.CreateDirectory(psTmpDirectory + "/snapshot-" + psUniqueChronoLogName);
var rulesWriter = new WonkaBizRulesXmlWriter(poEngine);
File.WriteAllText(snapshotDirInfo.FullName + "/" + psUniqueChronoLogName + ".rules.xml", rulesWriter.ExportXmlString());
var prodMsgXml = new WonkaProductMsgWriter().WriteWonkaMsg(new WonkaProductMessage(poRecord, true));
File.WriteAllText(snapshotDirInfo.FullName + "/" + psUniqueChronoLogName + ".prdmsg.xml", prodMsgXml);
var reportXml = new WonkaRuleTreeReportWriter(poReport).ExportXmlString();
File.WriteAllText(snapshotDirInfo.FullName + "/" + psUniqueChronoLogName + ".report.xml", reportXml);
sZipFile = psTmpDirectory + "/" + psUniqueChronoLogName + ".zip";
using (var zipOutputStream = new ZipOutputStream(File.Create(sZipFile)))
{
try
{
zipOutputStream.SetLevel(5);
var snapshotFileList = snapshotDirInfo.GetFiles();
foreach (var tmpFile in snapshotFileList)
{
Int32 nSize = 0;
using (FileStream tmpFileStream = File.OpenRead(tmpFile.FullName))
{
ZipEntry tmpEntry = new ZipEntry(tmpFile.Name);
zipOutputStream.PutNextEntry(tmpEntry);
while (tmpFileStream.Position < tmpFileStream.Length)
{
byte[] buffer = new byte[16384];
nSize = tmpFileStream.Read(buffer, 0, buffer.Length);
zipOutputStream.Write(buffer, 0, nSize);
zipOutputStream.Flush();
}
}
}
}
catch (Exception e)
{
// NOTE: What should be done here?
throw e;
}
}
return(sZipFile);
}
