public void CanStore()
{
var store = new InMemoryCacheStore();
store.AddOrUpdateAsync(new CacheKey(DummyUrl, new string[0]),
ResponseHelper.GetOkMessage()).Wait();
var r = store.GetValueAsync(new CacheKey(DummyUrl, new string[0])).Result;
Assert.NotNull(r);
}
public VirtualDbCacheableReader(DataSourceCacheEntry entry, SelectStatement select)
: base(select)
{
_entry = entry;
_spoolerTask = new Task(() =>
{
var cacheReader = new VirtualDbReader(select);
try
{
_entry.State = ECacheState.Busy;
var store = new InMemoryCacheStore
{
Fields = cacheReader.FieldNames()
};
while (cacheReader.Read())
{
var row = new object[store.Fields.Count];
for (var j = 0; j < row.Length; j++)
{
row[j] = cacheReader[j];
}
store.Data.Add(row);
}
_entry.Store = store;
//write to file
using (FileStream fs = new FileStream(entry.Key + ".cache", FileMode.Create)){
// var formatter = new BinaryFormatter();
// formatter.Serialize(fs, store);
}
_entry.State = ECacheState.Ready;
}
catch (Exception exception)
{
_entry.State = ECacheState.Invalid;
log.Error(exception);
throw;
}
finally
{
cacheReader.Close();
}
});
_spoolerTask.Start();
}
public async Task RespectsExpiry()
{
_store = new InMemoryCacheStore(TimeSpan.Zero);
var _cachingHandler = new CachingHandler(_store)
{
InnerHandler = _dummyHandler
};
_httpClient = new HttpClient(_cachingHandler);
_dummyHandler.Response = ResponseHelper.GetOkMessage(1, true);
var response = await _httpClient.GetAsync(DummyUrl);
Thread.Sleep(100);
_dummyHandler.Response = ResponseHelper.GetNotModifiedMessage(1);
// first caching
response = await _httpClient.GetAsync(DummyUrl);
Console.WriteLine(response.Headers.GetCacheCowHeader().ToString());
Assert.NotNull(response.Headers.GetCacheCowHeader().RetrievedFromCache);
Assert.True(response.Headers.GetCacheCowHeader().RetrievedFromCache.Value);
// stale go getter
Thread.Sleep(1500);
_dummyHandler.Response = ResponseHelper.GetOkMessage(1, true);
response = await _httpClient.GetAsync(DummyUrl);
Console.WriteLine(response.Headers.GetCacheCowHeader().ToString());
Assert.NotNull(response.Headers.GetCacheCowHeader().DidNotExist);
Assert.True(response.Headers.GetCacheCowHeader().DidNotExist.Value);
// immediate, get it from cache - short circuit
response = await _httpClient.GetAsync(DummyUrl);
Console.WriteLine(response.Headers.GetCacheCowHeader().ToString());
Assert.Null(response.Headers.GetCacheCowHeader().WasStale);
}
