/// <summary>
/// Gets the hashes information from database.
/// </summary>
/// <returns></returns>
private async Task <HashesInfo> GetHashesInfoFromDB()
{
if (_hashesInfoStatic == null)
{
if (_hi == null) //local value is empty, fill it from DB once
{
_hi = null; //await CalculateHashesInfo(null, null, null, null);
}
if (_hi == null || _hi.IsCalculating)
{
return(_hi); //still calculating, return just this local value
}
else
{
_hashesInfoStatic = _hi; //calculation ended, save to global static value
}
}
return(await Task.FromResult(_hashesInfoStatic));
}
internal static Moq.Mock <IHashesRepository> MockHashesRepository()
{
var mock = new Moq.Mock <IHashesRepository>();
string ilfad = "ilfad", alphabet = "abcdefghijklmopqrstuvwxyz";
var hashes = new List <ThinHashes>(3)
{
new ThinHashes
{
Key = ilfad,
HashMD5 = MD5(ilfad),
HashSHA256 = Sha256(ilfad)
}
};
HashesInfo hi = new HashesInfo
{
ID = 0,
IsCalculating = false
};
mock.Setup(r => r.SetReadOnly(Moq.It.IsAny <bool>()));
mock.Setup(r => r.CalculateHashesInfo(Moq.It.IsAny <ILogger>(), Moq.It.IsAny <DbContextOptions <BloggingContext> >(), default))
.Returns(() =>
{
return(Task.FromResult(hi));
})
.Callback(() =>
{
hi.ID = 0;
hi.Alphabet = alphabet;
hi.Count = (int)Math.Pow(alphabet.Length, ilfad.Length);
hi.IsCalculating = false;
hi.KeyLength = ilfad.Length;
});
mock.SetupGet(r => r.CurrentHashesInfo).Returns(() =>
{
return(Task.FromResult(hi));
});
mock.Setup(r => r.FindByAsync(Moq.It.IsAny <Expression <Func <ThinHashes, bool> > >())).Returns <Expression <Func <ThinHashes, bool> > >((s) =>
{
var expr = s.Compile();
var found = hashes.Where(h => expr.Invoke(h)).ToList();
return(Task.FromResult(found));
});
mock.Setup(r => r.AutoComplete(Moq.It.IsAny <string>())).Returns <string>((s) =>
{
var found = hashes.Where(h =>
h.HashMD5.ToLowerInvariant().StartsWith(s) || h.HashSHA256.ToLowerInvariant().StartsWith(s) || h.Key.ToLowerInvariant().StartsWith(s))
.DefaultIfEmpty(new ThinHashes {
Key = "nothing found"
});
return(Task.FromResult(found));
});
mock.Setup(r => r.AddRangeAsync(Moq.It.IsAny <IEnumerable <ThinHashes> >())).Returns <IEnumerable <ThinHashes> >((s) =>
{
hashes.AddRange(s);
return(Task.FromResult(0));
});
mock.Setup(r => r.PagedSearchAsync(Moq.It.IsAny <string>(), Moq.It.IsAny <string>(), Moq.It.IsAny <string>(),
Moq.It.IsAny <int>(), Moq.It.IsAny <int>(), Moq.It.IsAny <CancellationToken>()))
.Returns((string sort, string order, string search, int offset, int limit, CancellationToken token) =>
{
token.ThrowIfCancellationRequested();
var column_names = WebControllers.BaseController <ThinHashes> .AllColumnNames;
IEnumerable <ThinHashes> items = WebControllers.BaseController <ThinHashes> .SearchItems(hashes.AsQueryable(), search, column_names);
(IEnumerable <ThinHashes> Itemz, int Count)orgtuple =
WebControllers.BaseController <ThinHashes> .ItemsToJson(items, sort, order, limit, offset);
(IEnumerable <string[]> Itemz, int Count)tuple =
(orgtuple.Itemz.Select(tab => new string[] { tab.Key, tab.HashMD5, tab.HashSHA256 }), orgtuple.Count);
return(Task.FromResult(tuple));
});
mock.Setup(r => r.SearchAsync(Moq.It.IsAny <HashInput>())).Returns((HashInput inp) =>
{
ThinHashes th;
if (inp.Kind == KindEnum.MD5)
{
th = hashes.FirstOrDefault(x => x.HashMD5 == inp.Search);
}
else
{
th = hashes.FirstOrDefault(x => x.HashSHA256 == inp.Search);
}
return(Task.FromResult(th ?? new ThinHashes {
Key = "nothing found"
}));
});
mock.Setup(r => r.GetAll()).Returns(() =>
{
var querable = hashes.AsQueryable();
return(querable);
});
return(mock);
}
public async Task <HashesInfo> CalculateHashesInfo(ILogger logger, Microsoft.EntityFrameworkCore.DbContextOptions <BloggingContext> dbContextOptions,
CancellationToken token = default)
{
using (var client = new DocumentClient(new Uri(_endpoint), _key))
{
HashesInfo hi = null;
try
{
if (GetHashesInfoFromDB().Result != null)
{
if (logger != null)
{
logger.LogInformation(0, $"###Leaving calculation of initial Hash parameters; already present");
}
return(GetHashesInfoFromDB().Result);
}
if (logger != null)
{
logger.LogInformation(0, $"###Starting calculation of initial Hash parameters");
}
hi = new HashesInfo {
ID = 0, IsCalculating = true
};
_hashesInfoStatic = hi; //temporary save to static to indicate calculation and block new calcultion threads
var collection_link = UriFactory.CreateDocumentCollectionUri(_databaseId, _collectionId);
//var alphabet = client.CreateDocumentQuery<DocumentDBHash>(collection_link)
// .Select(f => f.Key.First())
// .Distinct()
// .OrderBy(o => o);
int.TryParse(client.CreateDocumentQuery <DocumentDBHash>(collection_link)
.OrderByDescending(x => x.Key).Take(1).ToArray().FirstOrDefault().Id, out int count);
var key_length = client.CreateDocumentQuery <int>(collection_link,
"SELECT TOP 1 VALUE LENGTH(c.Key) FROM c").ToAsyncEnumerable().First();
hi.Count = count;
hi.KeyLength = await key_length;
hi.Alphabet = "fakefakefake"; //string.Concat(alphabet);
hi.IsCalculating = false;
if (logger != null)
{
logger.LogInformation(0, $"###Calculation of initial Hash parameters ended");
}
}
catch (Exception ex)
{
if (logger != null)
{
logger.LogError(ex, nameof(CalculateHashesInfo));
}
hi = null;
}
finally
{
_hashesInfoStatic = hi;
}
return(hi);
}
}
