public override bool Execute()
{
if (Assets.Length == 0)
{
// Do nothing if there are no assets to pack.
return(true);
}
var packageFiles = new List <StaticWebAssetPackageFile>();
foreach (var file in AdditionalPackageFiles)
{
packageFiles.Add(new StaticWebAssetPackageFile
{
Id = file.ItemSpec,
PackagePath = file.GetMetadata("PackagePath")
});
}
foreach (var asset in Assets)
{
packageFiles.Add(new StaticWebAssetPackageFile
{
Id = asset.ItemSpec,
PackagePath = asset.GetMetadata("TargetPath")
});
}
packageFiles.Sort((x, y) => string.Compare(x.Id, y.Id, StringComparison.Ordinal));
var manifest = new StaticWebAssetsPackManifest
{
Files = packageFiles.ToArray(),
ElementsToRemove = AdditionalElementsToRemoveFromPacking.Select(e => e.ItemSpec).OrderBy(id => id).ToArray()
};
PersistManifest(manifest);
return(!Log.HasLoggedErrors);
}
private void PersistManifest(StaticWebAssetsPackManifest manifest)
{
var data = JsonSerializer.SerializeToUtf8Bytes(manifest, ManifestSerializationOptions);
var dataHash = ComputeHash(data);
var fileExists = File.Exists(ManifestPath);
var existingManifestHash = fileExists ? ComputeHash(File.ReadAllBytes(ManifestPath)) : "";
if (!fileExists)
{
Log.LogMessage(MessageImportance.Low, $"Creating manifest because manifest file '{ManifestPath}' does not exist.");
File.WriteAllBytes(ManifestPath, data);
}
else if (!string.Equals(dataHash, existingManifestHash, StringComparison.Ordinal))
{
Log.LogMessage(MessageImportance.Low, $"Updating manifest because manifest version '{dataHash}' is different from existing manifest hash '{existingManifestHash}'.");
File.WriteAllBytes(ManifestPath, data);
}
else
{
Log.LogMessage(MessageImportance.Low, $"Skipping manifest update because manifest version '{dataHash}' has not changed.");
}
}