Why another rendition of FileSystemWatcher?

The FileSystemWatcher is great for demo apps. For production code? Not so much. Swatcher was written from the ground-up to replace FileSystemWatcher and add the features you need: speed, reliability, events raised when they're supposed to be and an intuitive API that's awesome. Heck, it even provides both observables and events to cater to your coding style.

Building

To build Swatcher just open the Swatcher.sln in Visual Studio.

Note that Swatcher has been compiled against the .Net 4.6.2 Framework.

Licensing

Swatcher

Swatcher is licensed under the RPL 1.5 license. More details can be found here.

Features

• No false change notifications when a file system item is created, deleted or renamed.
• When a large file is being uploaded, copied or moved, Swatcher will wait until the IO operations are completed before sending a creation notice.
• In addition to the aforementioned, SwatcherCreatedEventArgs includes a ProcessingTime property to inform you as to how long the IO operation took.
• In the ISwatcherConfig, you can specify a custom filter for Created, Changed, Deleted and Renamed events so an event is never raised for stuff you're not interested in.
• I added LibLog to enable developers to "hook" diagnostic info as a Swatcher is processing file system events. Thus, you'll be able to seamlessly integrate a Swatcher with whatever logging mechanism you're using. Create an issue for info your interested in and I will consider adding it to the library!

Installation

Swatcher is installed using NuGet: Install-Package Swatcher

Configuring a Swatcher

private static ISwatcherConfig CreateConfiguration()
{
    BraveLantern.Swatcher.Logging.LogProvider.SetCurrentLogProvider(new ColoredConsoleLogProvider());

    //The swatcherId parameter is optional in case you don't want to use it. It really comes 
    //in handy when you are creating several Swatchers at runtime and you need to know from  
    //which Swatcher an event is being raised.
    //var swatcherId = 12345;

    //The folderPath parameter is the path to a folder that you want Swatcher to watch.
    //UNC paths are not supported! If you want to monitor a network folder, you need to map
    //it as a drive.
    var folderPath = @"C:\Users\Martin\Desktop\Monitored";

    //The changeTypes parameter is an bitwise OR of the change types that you want Swatcher to tell you about.
    //see docs here: https://msdn.microsoft.com/en-us/library/t6xf43e0(v=vs.110).aspx
    var changeTypes = WatcherChangeTypes.All;

    //The itemTypes parameter is used to tell Swatcher if you want to be notified of changes to files, folders,
    //or both.
    var itemTypes = SwatcherItemTypes.All;

    //see docs here: https://msdn.microsoft.com/en-us/library/system.io.notifyfilters(v=vs.110).aspx
    var notificationFilters = SwatcherNotificationTypes.All;

    return new SwatcherConfig(folderPath, changeTypes, itemTypes, notificationFilters, loggingEnabled: true);
}

Consuming a Swatcher

There are two different ways a Swatcher can be consumed:

• Usage via Events
• Usage via Rx Observables