public void PhraseCache_PurgeOrphaned()
{
// Verify that the cache deletes orhpaned files.
string path1;
string path2;
DeleteFolder();
try
{
var settings = new SpeechEngineSettings();
settings.PhraseCacheFolder = PhraseCachePath;
settings.OneTimePhraseFolder = OneTimePath;
settings.PhraseFolderFanout = 10;
settings.PhrasePurgeInterval = TimeSpan.FromSeconds(0.5);
settings.MaxOneTimePhraseTTL = TimeSpan.FromSeconds(1);
SpeechEngine.Start(settings);
// Add couple files to the cache, one at the root and the second
// in a subfolder. Then force a cache purge and then verify that
// the files were deleted and the index file still exists.
path1 = Path.Combine(PhraseCachePath, "test1.dat");
File.WriteAllText(path1, "test1");
path2 = Path.Combine(PhraseCachePath, "0", "test2.dat");
File.WriteAllText(path2, "test2");
// Call the speech engine's background task handler so it
// can handle cache purging and then verify that the
// phrase was actually purged.
Thread.Sleep(TimeSpan.FromSeconds(2));
SpeechEngine.OnBkTask();
Helper.WaitFor(() => !File.Exists(path1), TimeSpan.FromSeconds(5));
Assert.IsFalse(File.Exists(path1));
Assert.IsFalse(File.Exists(path2));
// Make sure we didn't purge the index file by accident.
Assert.IsTrue(File.Exists(Path.Combine(PhraseCachePath, PhraseCache.IndexFileName)));
}
finally
{
SpeechEngine.Stop();
DeleteFolder();
}
}
public void PhraseCache_PurgeCache_WithSubfolders()
{
// Verify that the cache purges expired phrases within subfolders.
Phrase phrase;
DeleteFolder();
try
{
var settings = new SpeechEngineSettings();
settings.PhraseCacheFolder = PhraseCachePath;
settings.OneTimePhraseFolder = OneTimePath;
settings.PhraseFolderFanout = 10;
settings.PhrasePurgeInterval = TimeSpan.FromSeconds(0.5);
settings.MaxPhraseTTL = TimeSpan.FromSeconds(1);
SpeechEngine.Start(settings);
// Create a phrase and add it to the cache.
phrase = Phrase.PhoneText("Hello World!");
phrase.Path = SpeechEngine.PhraseCache.GetNextPhrasePath(phrase);
File.WriteAllBytes(phrase.Path, new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 });
SpeechEngine.PhraseCache.AddPhrase(phrase);
// Wait five seconds for the phrase to expire.
Thread.Sleep(TimeSpan.FromSeconds(5));
// Call the speech engine's background task handler so it
// can handle cache purging and then verify that the
// phrase was actually purged.
SpeechEngine.OnBkTask();
Helper.WaitFor(() => !File.Exists(phrase.Path), TimeSpan.FromSeconds(5));
Assert.IsNull(SpeechEngine.PhraseCache.FindPhrase(phrase));
Assert.IsFalse(File.Exists(phrase.Path));
}
finally
{
SpeechEngine.Stop();
DeleteFolder();
}
}
public void PhraseCache_Blast()
{
// Blast the cache with traffic on multiple threads to make sure
// that nothing bad happens.
// Verify that the cache purges expired phrases.
bool stop = false;
int count = 0;
DeleteFolder();
try
{
var settings = new SpeechEngineSettings();
settings.PhraseCacheFolder = PhraseCachePath;
settings.OneTimePhraseFolder = OneTimePath;
settings.PhraseFolderFanout = 100;
settings.PhrasePurgeInterval = TimeSpan.FromSeconds(0.5);
settings.MaxPhraseTTL = TimeSpan.FromSeconds(1);
settings.MaxOneTimePhraseTTL = TimeSpan.FromSeconds(1);
SpeechEngine.Start(settings);
// Simulate a background task thread.
Helper.EnqueueAction(
() =>
{
while (!stop)
{
SpeechEngine.OnBkTask();
Thread.Sleep(100);
}
});
// Create 5 threads that cache phrases.
for (int i = 0; i < 5; i++)
{
Helper.EnqueueAction(
() =>
{
while (!stop)
{
var phrase = Phrase.PhoneText("Hello World: {0}", Interlocked.Increment(ref count));
phrase.Path = SpeechEngine.PhraseCache.GetNextPhrasePath(phrase);
File.WriteAllBytes(phrase.Path, new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 });
SpeechEngine.PhraseCache.AddPhrase(phrase);
Thread.Sleep(1000);
}
});
}
// Create 5 threads that create one-time phrases.
for (int i = 0; i < 5; i++)
{
Helper.EnqueueAction(
() =>
{
while (!stop)
{
var phrase = Phrase.PhoneText("Hello World: {0}", Interlocked.Increment(ref count));
phrase.Path = SpeechEngine.PhraseCache.GetNextOneTimePath(phrase);
File.WriteAllBytes(phrase.Path, new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 });
Thread.Sleep(1000);
}
});
}
// Let the thing run for a while before signalling the threads to stop.
Thread.Sleep(TimeSpan.FromSeconds(60));
stop = true;
// Give the threads a chance to stop.
Thread.Sleep(TimeSpan.FromSeconds(5));
}
finally
{
SpeechEngine.Stop();
DeleteFolder();
}
}