public async Task RunWithInputStreamTest()
{
// arrange
var sut = new AsyncExifTool(AsyncExifToolConfigurationFactory.Create());
var sw = Stopwatch.StartNew();
sut.Initialize();
sw.Stop();
output.WriteLine($"It took {sw.Elapsed.ToString()} to Initialize exiftool");
// act
sw.Reset();
sw.Start();
var version = string.Empty;
for (var i = 0; i < Repeat; i++)
{
version = await sut.GetVersionAsync().ConfigureAwait(false);
}
sw.Stop();
await sut.DisposeAsync().ConfigureAwait(false);
// assert
output.WriteLine($"It took {sw.Elapsed.ToString()} to retrieve exiftool version {Repeat} times");
output.WriteLine($"Version: {version}");
version.Should().NotBeNullOrEmpty();
}
public async Task RunExiftoolForVersionAndImageErrorTest()
{
// arrange
var sut = new AsyncExifTool(AsyncExifToolConfigurationFactory.Create());
sut.Initialize();
// act
var getMetadataNonExistingImageTask = sut.ExecuteAsync(image + "does not exist");
Func <Task> act = async() => await getMetadataNonExistingImageTask;
var version = await sut.GetVersionAsync().ConfigureAwait(false);
// assert
act.Should().Throw <Exception>();
version.Should().NotBeNullOrEmpty();
await sut.DisposeAsync().ConfigureAwait(false);
}
public async Task DisposeAsyncShouldCancelAllPendingRequestsTest()
{
// arrange
var tasks = new Task <string> [Repeat];
Stopwatch sw;
#if NETCOREAPP3_0
await using (var sut = new AsyncExifTool(AsyncExifToolConfigurationFactory.Create()))
#else
using (var sut = new AsyncExifTool(AsyncExifToolConfigurationFactory.Create()))
#endif
{
sw = Stopwatch.StartNew();
sut.Initialize();
sw.Stop();
output.WriteLine($"It took {sw.Elapsed.ToString()} to Initialize exiftool");
// act
sw.Reset();
sw.Start();
for (var i = 0; i < Repeat; i++)
{
tasks[i] = sut.GetVersionAsync();
}
sw.Stop();
}
// assert
var countCancelled = 0;
foreach (var t in tasks)
{
try
{
output.WriteLine(await t.ConfigureAwait(false));
}
catch (TaskCanceledException)
{
countCancelled++;
}
}
countCancelled.Should().BeGreaterOrEqualTo(Repeat / 2).And.NotBe(Repeat);
output.WriteLine($"It took {sw.Elapsed.ToString()} to retrieve exiftool version {Repeat - countCancelled} times");
}
public async Task RunExiftoolForVersionAndImageTest()
{
// arrange
var sut = new AsyncExifTool(AsyncExifToolConfigurationFactory.Create());
sut.Initialize();
// act
var version = await sut.GetVersionAsync().ConfigureAwait(false);
var result = await sut.ExecuteAsync(image).ConfigureAwait(false);
// assert
version.Should().NotBeNullOrEmpty();
result.Should().NotBeNullOrEmpty();
await sut.DisposeAsync().ConfigureAwait(false);
// just for fun
output.WriteLine(version);
output.WriteLine(result);
}
public static async Task Main()
{
ConfigureNLog();
var nlogLogger = LogManager.GetCurrentClassLogger(typeof(AsyncExifTool));
Console.WriteLine("Sample application using AsyncExifTool in combination with NLog");
// AsyncExifTool configuration. Please make sure exiftool.exe is accessible.
var commonArgs = new List <string>();
var asyncExifToolConfiguration = new AsyncExifToolConfiguration(
"exiftool.exe",
Encoding.UTF8,
commonArgs);
// Create a logger for AsyncExifTool. AsyncExifTool does not require any logging framework. You have to write your own adapter.
var logger = new AsyncExifToolToNLogAdapter(nlogLogger);
// Create AsyncExifTool instance. You can also do this without a logger.
// ie:
// await using var exiftool = new AsyncExifTool(asyncExifToolConfiguration);
await using var exiftool = new AsyncExifTool(asyncExifToolConfiguration, logger);
try
{
// initialize. At this point the exiftool process is started.
// this call might throw an exception.
exiftool.Initialize();
}
catch (AsyncExifToolInitialisationException e)
{
Console.WriteLine(e);
Console.WriteLine("press enter to exit");
Console.ReadKey();
return;
}
// Just some calls to ExifTool (using an extension method)
for (int i = 0; i < 100; i++)
{
Console.WriteLine(await exiftool.GetVersionAsync());
}
try
{
var result = await exiftool.ExecuteAsync("dummy command");
Console.WriteLine("dummy command result: " + result);
}
catch (Exception e)
{
Console.WriteLine("dummy command result exception: " + e.Message);
}
var file = @"1.jpg";
try
{
Console.WriteLine("Add person to existing image.");
var result = await exiftool.ExecuteAsync(new[] { "-Xmp:PersonInImage+=\"Test person\"", file });
Console.WriteLine($"RESULT: {result}");
}
catch (Exception e)
{
Console.WriteLine($"ERROR MSG: {e.Message}");
}
Console.WriteLine(string.Empty);
try
{
Console.WriteLine("Add person to NON existing image.");
var result = await exiftool.ExecuteAsync(new[] { "-Xmp:PersonInImage+=\"Test person\"", file + @"xxx" });
Console.WriteLine($"RESULT: {result}");
}
catch (Exception e)
{
Console.WriteLine($"ERROR MSG: {e.Message}");
}
Console.WriteLine(string.Empty);
try
{
Console.WriteLine("Get person information from image.");
var result = await exiftool.ExecuteAsync(new[] { "-Xmp:PersonInImage", file });
Console.WriteLine($"RESULT: {result}");
}
catch (Exception e)
{
Console.WriteLine($"ERROR MSG: {e.Message}");
}
Console.WriteLine(string.Empty);
// we are done
Console.WriteLine("press enter to exit");
Console.ReadLine();
}