/// <summary>
/// Creates and queues a rank check request.
/// </summary>
/// <param name="rankCheckRequest">The parameters of the rank check request to create with.</param>
/// <returns>The persisted rank check request.</returns>
public async Task <RankCheckRequest> QueueRankCheckRequestAsync(RankCheckRequest rankCheckRequest)
{
rankCheckRequest.Status = RankCheckRequestStatus.InQueue;
_context.RankCheckRequests.Add(rankCheckRequest);
await _context.SaveChangesAsync();
_queue.QueueBackgroundWorkItem(async(token, provider) =>
{
RankCheckRequest updatedRankCheckRequest;
var context = provider.GetService <RankCheckerDbContext>();
updatedRankCheckRequest = await context.RankCheckRequests.Where(x => x.Id == rankCheckRequest.Id).FirstAsync();
updatedRankCheckRequest.Status = RankCheckRequestStatus.InProgress;
context.Attach(updatedRankCheckRequest);
context.Entry(updatedRankCheckRequest).Property(x => x.StatusId).IsModified = true; // Mark the specific field as modified to only update that field
await context.SaveChangesAsync();
try
{
var scrapingRankCheckerFactory = provider.GetService <IRankCheckerFactory>();
IRankChecker rankChecker = scrapingRankCheckerFactory.CreateRankChecker(updatedRankCheckRequest);
List <SearchEntry> relevantSearchEntries = await rankChecker.ExtractRankEntriesAsync();
if (relevantSearchEntries != null && relevantSearchEntries.Count > 0)
{
await context.SearchEntries.AddRangeAsync(relevantSearchEntries);
}
updatedRankCheckRequest.Status = RankCheckRequestStatus.Completed;
context.Attach(updatedRankCheckRequest);
context.Entry(updatedRankCheckRequest).Property(x => x.StatusId).IsModified = true;
await context.SaveChangesAsync();
}
catch (Exception ex)
{
updatedRankCheckRequest.Status = RankCheckRequestStatus.Error;
updatedRankCheckRequest.ErrorMessage = ex.Message;
context.Attach(updatedRankCheckRequest);
context.Entry(updatedRankCheckRequest).Property(x => x.StatusId).IsModified = true;
context.Entry(updatedRankCheckRequest).Property(x => x.ErrorMessage).IsModified = true;
await context.SaveChangesAsync();
}
});
return(rankCheckRequest);
}
public void TestYahooRankChecker()
{
var rankCheckRequest = new RankCheckRequest()
{
SearchUrl = "au.search.yahoo.com/search",
MaximumRecords = 100,
StatusId = RankCheckRequestStatus.InQueue.Id,
TermToSearch = "Online Title Search",
WebsiteUrl = "www.infotrack.com.au",
CreatedAt = DateTime.Now,
LastUpdatedAt = DateTime.Now
};
IRankCheckerFactory factory = new ScrapingRankCheckerFactory(new HttpClient());
IRankChecker rankChecker = factory.CreateRankChecker(rankCheckRequest);
Assert.IsAssignableFrom <YahooScrapingRankChecker>(rankChecker);
List <SearchEntry> entries = rankChecker.ExtractRankEntries();
Assert.True(entries.Count > 0);
}
