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using NpgsqlRest.UploadHandlers.Handlers;
namespace NpgsqlRest.UploadHandlers;
public static class UploadExtensions
{
public static Dictionary<string, Func<RetryStrategy?, IUploadHandler>>? CreateUploadHandlers(this NpgsqlRestUploadOptions options)
{
if (options is null)
{
return null;
}
if (options.Enabled is false)
{
return null;
}
if (options.DefaultUploadHandlerOptions.LargeObjectEnabled is false &&
options.DefaultUploadHandlerOptions.FileSystemEnabled is false &&
options.DefaultUploadHandlerOptions.CsvUploadEnabled is false)
{
return null;
}
var result = new Dictionary<string, Func<RetryStrategy?, IUploadHandler>>();
if (options.DefaultUploadHandlerOptions.LargeObjectEnabled)
{
result.Add(options.DefaultUploadHandlerOptions.LargeObjectKey, (strategy) => new LargeObjectUploadHandler(strategy));
}
if (options.DefaultUploadHandlerOptions.FileSystemEnabled)
{
result.Add(options.DefaultUploadHandlerOptions.FileSystemKey, strategy => new FileSystemUploadHandler());
}
if (options.DefaultUploadHandlerOptions.CsvUploadEnabled)
{
result.Add(options.DefaultUploadHandlerOptions.CsvUploadKey, strategy => new CsvUploadHandler(strategy));
}
return result;
}
public static IUploadHandler? CreateUploadHandler(this RoutineEndpoint endpoint)
{
if (endpoint.UploadHandlers is null || endpoint.UploadHandlers.Length == 0)
{
if (Options.UploadOptions.UploadHandlers is not null &&
Options.UploadOptions.UploadHandlers.TryGetValue(Options.UploadOptions.DefaultUploadHandler, out var handler))
{
return new DefaultUploadHandler(Options.UploadOptions, [handler(endpoint.RetryStrategy).SetType(Options.UploadOptions.DefaultUploadHandler)]);
}
throw new Exception($"Default upload handler '{Options.UploadOptions.DefaultUploadHandler}' not found.");
}
if (endpoint.UploadHandlers.Length == 1)
{
var handlerName = endpoint.UploadHandlers[0];
if (Options.UploadOptions.UploadHandlers is not null &&
Options.UploadOptions.UploadHandlers.TryGetValue(handlerName, out var handler))
{
return new DefaultUploadHandler(Options.UploadOptions, [handler(endpoint.RetryStrategy).SetType(handlerName)]);
}
throw new Exception($"Upload handler '{handlerName}' not found.");
}
// all handlers defined
List<IUploadHandler> handlers = new(endpoint.UploadHandlers.Length);
foreach (var handlerName in endpoint.UploadHandlers)
{
if (Options.UploadOptions.UploadHandlers is not null &&
Options.UploadOptions.UploadHandlers.TryGetValue(handlerName, out var handler))
{
handlers.Add(handler(endpoint.RetryStrategy).SetType(handlerName));
}
else
{
throw new Exception($"Upload handler '{handlerName}' not found.");
}
}
return new DefaultUploadHandler(Options.UploadOptions, [.. handlers]);
}
public static string[]? SplitParameter(this string? type)
{
if (string.IsNullOrWhiteSpace(type))
{
return null;
}
return type.Split(',', ' ', StringSplitOptions.TrimEntries | StringSplitOptions.RemoveEmptyEntries);
}
}