/// <summary>
/// Loads the libzstd.dll assembly.
/// </summary>
internal static void LoadLibzstdLibrary()
{
// If the library has already been loaded, there is no need to load it again.
if (LibZstdLoaded != null)
{
return;
}
// Attempt to load the library from an embedded resource.
LibZstdLoaded = UnmanagedLibraryLoader.LoadUnmanagedLibraryFromEmbeddedResources("MySql.Data", "libzstd.dll");
// If loading from an embedded resource fails, attempt to load it from a file in the output folder.
if (LibZstdLoaded == false)
{
ZstandardInterop.LoadLibzstdLibrary(string.Empty);
try
{
// Creating this temporary stream to check if the library was loaded succesfully.
using (var testStream = new ZstandardStream(new MemoryStream(), CompressionMode.Compress))
{ }
LibZstdLoaded = true;
}
catch {}
}
// If all attempts fail, log a warning and update the client supported compression algorithms.
if (LibZstdLoaded == false)
{
MySqlTrace.LogWarning(-1, ResourcesX.CompressionFailedToLoadLibzstdAssembly);
}
}
private void InvokeFunction(CallData callData)
{
CallResult callResult = UnmanagedLibraryLoader.InvokeUnmanagedFunction(callData);
_pipeServer.SendCallResponse(callResult);
}
