private async Task <VersionKeyInfo> GetVersionKeyAsync(CancellationToken cancellationToken)
{
lock (_versionKeyLocker)
{
// version key is obtained only once (but it's sometimes invalidated by Allegro - see GetItemsInfoAsync exception handling)
if (_versionKeyInfo != null)
{
return(_versionKeyInfo);
}
if (_versionRequestInProgress)
{
// possible for parallel requests after app started
throw new AllegroPlRequestException("Version key is being obtained...");
}
_versionRequestInProgress = true;
}
try
{
var client = new servicePortClient();
var sysStatus = await client.doQuerySysStatusAsync(new doQuerySysStatusRequest(1, CountryId, _webApiKey));
lock (_versionKeyLocker)
{
_versionKeyInfo = new VersionKeyInfo(sysStatus.verKey, DateTime.Now);
cancellationToken.ThrowIfCancellationRequested();
return(_versionKeyInfo);
}
}
catch (OperationCanceledException)
{
throw;
}
catch (Exception ex)
{
throw new AllegroPlRequestException($"Request {nameof(servicePortClient.doQuerySysStatusAsync)} failed.", ex);
}
finally
{
lock (_versionKeyLocker)
{
_versionRequestInProgress = false;
}
}
}
public async Task <doGetItemsInfoResponse> GetItemsInfoAsync(
long[] offerIds,
bool includeAttributes,
bool includeDeliveryOptions,
bool includeDescription,
CancellationToken cancellationToken)
{
Assure.ArgumentNotNull(offerIds, nameof(offerIds));
const int MaxItemsPerRequest = 10;
if (offerIds.Length > MaxItemsPerRequest)
{
throw new NotSupportedException($"Max '{MaxItemsPerRequest}' items per request is supported.");
}
var requestVersionKeyInfo = await GetVersionKeyAsync(cancellationToken);
try
{
var client = new servicePortClient();
// session id can't be cached in cloud since WebApi bind session id to IP
// todo: refactor after static IP for all external requests
var loginResponse = await client.doLoginAsync(
new doLoginRequest(
_webApiLogin,
_webApiPassword,
CountryId,
_webApiKey,
requestVersionKeyInfo.VersionKey));
cancellationToken.ThrowIfCancellationRequested();
var response = await client.doGetItemsInfoAsync(
new doGetItemsInfoRequest(
loginResponse.sessionHandlePart,
offerIds,
getDesc : includeDescription ? 1 : 0, // description
getImageUrl : 0,
getAttribs : includeAttributes ? 1 : 0, // attributes (including state)
getPostageOptions : includeDeliveryOptions ? 1 : 0, // delivery options
getCompanyInfo : 0,
getProductInfo : 0,
getAfterSalesServiceConditions : 0,
getEan : 0,
getAdditionalServicesGroup : 0));
cancellationToken.ThrowIfCancellationRequested();
return(response);
}
catch (OperationCanceledException)
{
throw;
}
catch (Exception ex)
{
if (ex.Message?.StartsWith("Niepoprawna wersja", StringComparison.OrdinalIgnoreCase) == true)
{
// most likely version key is invalidated
lock (_versionKeyLocker)
{
// if it's first request with invalidated version key
if (_versionKeyInfo != null &&
_versionKeyInfo.IssuedOn == requestVersionKeyInfo.IssuedOn)
{
// cause version key refresh on the next request
_versionKeyInfo = null;
}
}
}
throw new AllegroPlRequestException("Request to WebApi failed.", ex);
}
}
