public async Task <SearchResponse> SearchAsync(string queryWord)
{
try
{
using (var httpClient = new HttpClient())
{
string url = string.Format("{0}/search?queryword={1}", BaseApiUrl, queryWord);
var httpResponse = await httpClient.GetAsync(url);
if (httpResponse.StatusCode == HttpStatusCode.OK)
{
var responseJson = await httpResponse.Content.ReadAsStringAsync();
return(JsonConvert.DeserializeObject <SearchResponse>(responseJson));
}
else
{
string error = string.Format("Error occurred. Search action failed with status {0} for search word '{1}'", httpResponse.StatusCode, queryWord);
_logger.Error(error);
return(SearchResponse.FromError(error));
}
}
}
catch (Exception ex)
{
_logger.Error(ex);
return(SearchResponse.FromException(ex));
}
}
public async Task <SearchResponse> SearchAsync(SearchRequest request)
{
try
{
List <SearchResultItem> results = null;
var response = new SearchResponse();
string key = string.Format("SearchResults_{0}", HttpUtility.UrlEncode(request.QueryWord));
response.QueryWord = request.QueryWord;
if (false == _cache.TryGetValue(key, out results))
{
var enteredDate = DateTime.Now;
string error = string.Empty;
foreach (var crawler in _crawlers)
{
var crawlingRequest = buildCrawlingRequest(request);
var crawlingResult = await crawler.CrawleAsync(crawlingRequest);
if (crawlingResult == null)
{
error = string.Format("Error occurred while crawling {0} search engine.", crawler.SearchEngine);
_logger.Error(error);
return(SearchResponse.FromError(error));
}
results = new List <SearchResultItem>();
foreach (var item in crawlingResult.SearchResults)
{
item.EnteredDate = enteredDate;
var resultItem = await _repository.CreateAsync(item);
if (resultItem == null)
{
error = "Error occurred while saving search result item in DB";
_logger.Error(error);
}
else
{
results.Add(resultItem);
}
}
response.Results.AddRange(results);
}
var cacheEntryOptions = new MemoryCacheEntryOptions()
.SetSlidingExpiration(TimeSpan.FromHours(1));
_cache.Set(key, response.Results, cacheEntryOptions);
}
else
{
response.Results.AddRange(results);
}
return(response);
}
catch (Exception ex)
{
_logger.Error(ex);
return(SearchResponse.FromException(ex));
}
}