private void UpdateRange(AbstractFragment range, AbstractPatch patch)
{
var start = Math.Max(patch.StartPosition, range.StartPosition);
var end = Math.Min(patch.EndPosition, range.EndPosition);
for (var position = start; position <= end; position++)
{
range.SetValue(position, this.updateFunc(patch, position));
}
}
/// <inheritdoc/>
public void RestorePatch(AbstractPatch patch)
{
var forwardRestoredSamples = this.GetForwardArray(patch);
var backwardRestoredSamples = this.GetBackwardArray(patch);
var joinedRestoredSamples = this.ApplyWindowFunction(
forwardRestoredSamples,
backwardRestoredSamples);
patch.SetInternalArray(joinedRestoredSamples);
patch.ErrorLevelAtStart = this.GetErrorLevelAtStart(patch);
patch.ConnectionError = this.GetConnectionError(
forwardRestoredSamples,
backwardRestoredSamples);
patch.ErrorLevelAfterEnd = this.GetErrorLevelAfterEnd(patch);
}
private void UninstallPatch(PatchId patchId)
{
using (var transaction = this.context.CreateTransaction())
{
AbstractPatch patch = AbstractPatch.LoadById(patchId, context);
var patchInstallInfo = transaction.ExecuteReader(
String.Format(
"select {1} from {0} where {2} = {4} and {3} = {5} for update",
transaction.EscapeName(this.context.PatchesTable),
transaction.EscapeName("ROLLBACK_DATA"),
transaction.EscapeName("VERSION"),
transaction.EscapeName("NAME"),
transaction.MarkParam("pversion"),
transaction.MarkParam("pname")
),
new Dictionary <string, object>
{
{ "pversion", patchId.version },
{ "pname", patchId.name },
}
).Single();
patch.Rollback(transaction, XDocument.Parse(patchInstallInfo["ROLLBACK_DATA"]));
int affectedRows = transaction.ExecuteNonQuery(
String.Format(
"delete from {0} where {1} = {3} and {2} = {4}",
transaction.EscapeName(this.context.PatchesTable),
transaction.EscapeName("VERSION"),
transaction.EscapeName("NAME"),
transaction.MarkParam("pversion"),
transaction.MarkParam("pname")
),
new Dictionary <string, object>
{
{ "pversion", patchId.version },
{ "pname", patchId.name },
}
);
if (affectedRows != 1)
{
throw new ApplicationException("Unable to install patch; are you trying to run two patchers simultaneously?");
}
transaction.Commit();
}
}
/// <inheritdoc/>
public double GetErrorLevel(int position, AbstractPatch anotherPatch)
{
var errors = this.predictionErrPatcher.GetRange(
position - this.normCalculator.InputDataSize,
this.normCalculator.InputDataSize,
anotherPatch);
var normalError = this.normCalculator.GetResult(errors);
var inputSamples = this.inputPatcher.GetRange(
position - this.predictor.InputDataSize,
this.predictor.InputDataSize,
anotherPatch);
var errorAtPosition = Math.Abs(this.predictor.GetForward(inputSamples)
- this.inputPatcher.GetValue(position));
return(errorAtPosition / normalError);
}
private AbstractPatch BestOf(List <AbstractPatch> patches)
{
const double ErrorAtStartWeight = 0.33;
const double ConnectionErrorWeight = 0.33;
const double ErrorAtEndWeight = 0.33;
var maxErrorAtStart = patches.Select(p => p.ErrorLevelAtStart).Max();
var minErrorAtStart = patches.Select(p => p.ErrorLevelAtStart).Min();
var maxConnectionError = patches.Select(p => p.ConnectionError).Max();
var minConnectionError = patches.Select(p => p.ConnectionError).Min();
var maxErrorAtEnd = patches.Select(p => p.ErrorLevelAfterEnd).Max();
var minErrorAtEnd = patches.Select(p => p.ErrorLevelAfterEnd).Min();
AbstractPatch bestPatch = null;
var bestPatchError = 0.0;
foreach (var patch in patches)
{
var errorAtStartCoef = ErrorAtStartWeight *
(patch.ErrorLevelAtStart - minErrorAtStart) /
(maxErrorAtStart - minErrorAtStart);
var connectionErrorCoef = ConnectionErrorWeight *
(patch.ConnectionError - minConnectionError) /
(maxConnectionError - minConnectionError);
var errorAtEndCoef = ErrorAtEndWeight *
(patch.ErrorLevelAfterEnd - minErrorAtEnd) /
(maxErrorAtEnd - minErrorAtEnd);
var patchError = errorAtStartCoef + connectionErrorCoef + errorAtEndCoef;
if (bestPatch is null || patchError < bestPatchError)
{
bestPatch = patch;
bestPatchError = patchError;
}
}
return(bestPatch);
}
/// <summary>
/// Gets array containing sequence of patched samples of specified length
/// starting from the specified position.
/// </summary>
/// <param name="start">Start position of range.</param>
/// <param name="length">Length of range.</param>
/// <param name="anotherPatch">One more optional AbstractPatch
/// that is not in the Collection yet.</param>
/// <returns>Array of patched samples.</returns>
public double[] GetRange(int start, int length, AbstractPatch anotherPatch = null)
{
var range = new ArrayFragment(
this.immutableArray,
start,
length);
var patches = this.patchCollection.GetPatchesForRange(range);
foreach (var patch in patches)
{
this.UpdateRange(range, patch);
}
if (anotherPatch != null)
{
this.UpdateRange(range, anotherPatch);
}
return(range.GetInternalArray());
}
private double GetErrorLevelAfterEnd(AbstractPatch patch) => (this.detector.GetErrorLevel(patch.EndPosition + 1, patch) + this.detector.GetErrorLevel(patch.EndPosition + 2, patch) + this.detector.GetErrorLevel(patch.EndPosition + 3, patch)) / 3;
private double GetErrorLevelAtStart(AbstractPatch patch) => this.detector.GetErrorLevel(patch.StartPosition, patch);
private void InstallPatch(PatchId patchId)
{
AbstractPatch patch = AbstractPatch.LoadById(patchId, this.context);
if (!patch.DoesSupportEnvironment(this.context.EnvironmentName))
{
this.context.console.Report(" (skipping because of unsupported environment) ");
return;
}
using (var transaction = this.context.CreateTransaction())
{
bool patchExistsInDB;
XDocument rollbackData;
var patchDBData = transaction.ExecuteReader(
string.Format(
"select {1} from {0} where {2} = {3} and {4} = {5}",
transaction.EscapeName(this.context.PatchesTable),
transaction.EscapeName("STATUS"),
transaction.EscapeName("VERSION"),
transaction.MarkParam("pversion"),
transaction.EscapeName("NAME"),
transaction.MarkParam("pname")
),
new Dictionary <string, object>
{
{ "pversion", patchId.version },
{ "pname", patchId.name },
}
).ToList();
if (patch is PersistentPatch)
{
bool reinstall;
if (patchDBData.Any())
{
var patchInfo = patchDBData.Single();
switch (patchInfo["STATUS"])
{
case STATUS_INSTALLED:
throw new ApplicationException("Patch is already installed");
case STATUS_INSTALLING:
reinstall = true;
break;
default:
throw new ApplicationException(string.Format("Unknown status {0}", patchInfo["STATUS"]));
}
}
else
{
reinstall = false;
}
if (reinstall)
{
patchExistsInDB = true;
}
throw new NotImplementedException("Persistent patch installation is not implemented yet");
}
else
{
if (patchDBData.Any())
{
throw new ApplicationException("Patch is already installed");
}
patchExistsInDB = false;
rollbackData = patch.Apply(transaction);
}
//System.Threading.Thread.Sleep(1000);
int affectedRows = transaction.ExecuteNonQuery(
String.Format(
patchExistsInDB
? "update {0} set {5} = {6}, {7} = {8} where {1} = {2} and {3} = {4}"
: "insert into {0}({1}, {3}, {5}, {7}) values({2}, {4}, {6}, {8})"
,
transaction.EscapeName(this.context.PatchesTable),
transaction.EscapeName("VERSION"),
transaction.MarkParam("pversion"),
transaction.EscapeName("NAME"),
transaction.MarkParam("pname"),
transaction.EscapeName("ROLLBACK_DATA"),
transaction.MarkParam("prollbackdata"),
transaction.EscapeName("STATUS"),
transaction.MarkParam("pstatus")
),
new Dictionary <string, object>
{
{ "pversion", patchId.version },
{ "pname", patchId.name },
{ "prollbackdata", rollbackData.ToString() },
{ "pstatus", STATUS_INSTALLED },
}
);
if (affectedRows != 1)
{
throw new ApplicationException("Unable to install patch; are you trying to run two patchers simultaneously?");
}
transaction.Commit();
}
}
