private async ValueTask <BlazorModuleManifest?> GetModuleManifestCoreAsync(ModuleIdentifier module, CancellationToken cancellation)
{
var moduleProperties = await _modulePropertiesLookup.LookupAsync(module, cancellation);
if (moduleProperties == null)
{
_logger?.LogError($"Unable to load manifest for {module}. The module properties could not be fetched.");
return(null);
}
foreach (var endPoint in moduleProperties.EndPoints)
{
var dispatchData = new DispatchDataDictionary <Query <BlazorModuleManifest> >(new Query <BlazorModuleManifest>());
var queryResult = await _messageDispatcher.DispatchAsync(dispatchData, publish : false, endPoint, cancellation);
if (!queryResult.IsSuccessWithResult <BlazorModuleManifest>(out var manifest))
{
_logger?.LogWarning($"Unable to load manifest for {module} from end-point {endPoint}.");
continue;
}
_cache.TryAdd(module, manifest);
_logger?.LogDebug($"Successfully loaded manifest for module {module}.");
return(manifest);
}
if (moduleProperties.EndPoints.Any())
{
_logger?.LogError($"Unable to load manifest for {module}. No end-point matched.");
}
else
{
_logger?.LogError($"Unable to load manifest for {module}. No end-points available.");
}
return(null);
}
public async ValueTask <Assembly?> InstallAssemblyAsync(ModuleIdentifier module, string assemblyName, CancellationToken cancellation)
{
var result = GetAssembly(assemblyName);
if (result != null)
{
_logger?.LogDebug($"Installing assembly {assemblyName} for module {module}: Already installed.");
return(result);
}
_logger?.LogDebug($"Installing assembly {assemblyName} for module {module}.");
var moduleProperties = await _modulePropertiesLookup.LookupAsync(module, cancellation);
if (moduleProperties == null)
{
_logger?.LogError($"Unable to install assembly {assemblyName} for module {module}. The module properties could not be fetched.");
return(null);
}
foreach (var prefix in moduleProperties.Prefixes)
{
var assemblyUri = GetAssemblyUri(prefix, assemblyName);
HttpResponseMessage response;
try
{
response = await _httpClient.GetAsync(assemblyUri, cancellation).ConfigureAwait(false);
}
catch (Exception exc)
{
_logger?.LogWarning(exc, $"Unable to load assembly {assemblyName} from source {assemblyUri}.");
continue;
}
if (response.IsSuccessStatusCode)
{
var assemblyBytes = await response.Content.ReadAsByteArrayAsync().ConfigureAwait(false);
try
{
result = Assembly.Load(assemblyBytes);
}
catch (Exception exc)
{
_logger?.LogWarning(exc, $"Unable to install loaded assembly {assemblyName}.");
continue;
}
_logger?.LogDebug($"Successfully installed assembly {assemblyName}. Response status was: {response.StatusCode} {response?.ReasonPhrase ?? string.Empty}.");
return(result);
}
_logger?.LogWarning($"Unable to load assembly {assemblyName} from source {assemblyUri}.");
}
if (moduleProperties.Prefixes.Any())
{
_logger?.LogError($"Unable to load assembly {assemblyName}. No source successful.");
}
else
{
_logger?.LogError($"Unable to load assembly {assemblyName}. No sources available.");
}
return(null);
}
