public async Task <ShortUrlModel> GetData(string urlId)
{
ShortUrlModel ret = null;
lock (_cache)
_cache.TryGetValue(urlId, out ret);
return(ret);
}
public async Task <bool> LogAccess(string urlId, IPAddress connectionRemoteIpAddress)
{
ShortUrlModel ret = null;
lock (_cache)
_cache.TryGetValue(urlId, out ret);
//if (!ret.FirstVisitUtc.HasValue)
// ret.FirstVisitUtc = DateTime.Now;
return(true);
}
public async Task <IActionResult> Create([Bind("Id,Key,Url")] ShortUrlModel shortUrlModel)
{
if (ModelState.IsValid)
{
await _httpClient.AddAsync(shortUrlModel);
return(RedirectToAction(nameof(Index)));
}
return(View(shortUrlModel));
}
public async Task <IActionResult> CreateUrl(ShortUrlModel shortUrlModel)
{
try
{
await _repository.AddUrl(shortUrlModel.Key, shortUrlModel.Url);
}
catch (ArgumentException)
{
return(BadRequest());
}
return(Created(shortUrlModel.Key, shortUrlModel));
}
private async Task <string> CreateShortUrl(ShortUrlCreateRequest shortUrlCreateRequest, string key)
{
var shortUrlModel = new ShortUrlModel
{
Key = key,
CreatedUtc = DateTime.UtcNow,
CreatorId = shortUrlCreateRequest.UserId,
ExpiresUtc = DateTime.UtcNow.AddDays(ApplicationVariable.ShortUrlExpireDays),
UpdateDate = DateTime.UtcNow,
Url = shortUrlCreateRequest.LongUrl
};
await _shortUrlRepository.Insert(shortUrlModel);
return(shortUrlModel.Key);
}
public async Task <(bool Success, string Key)> AddData(ShortUrlModel data)
{
for (int i = 0; i < 100; i++)
{
lock (_cache)
{
var key = Utils.KeyGenerator.Generate(_managedConfig.KeyLength);
if (!_cache.ContainsKey(key))
{
data.Key = key;
_cache.Add(key, data);
return(Success : true, Key : key);
}
}
}
return(Success : false, Key : null);
}
public async Task <(bool Success, string Key)> AddData(ShortUrlModel data)
{
// Try to find an available random key
for (int i = 0; i < 100; i++)
{
var key = Utils.KeyGenerator.Generate(_managedConfig.KeyLength);
var existing = await GetData(key);
if (existing == null)
{
data.Key = key;
// Save to database
_shortUrlDbContext.Add(data);
await _shortUrlDbContext.SaveChangesAsync();
// No further processing
return(Success : true, Key : key);
}
}
return(Success : false, Key : null);
}
public async Task <string> GetOriginalUrl(ShortUrlModel shortUrl)
{
return(await UrlShorteningService.GetOriginalUrl(shortUrl.ShortUrl));
}
