public override void Write(Stream outputStream, ICacheItem cacheItem)
{
ResponseCacheItem item = (ResponseCacheItem)cacheItem;
StringBuilder result = new StringBuilder();
result.Append(item.Url + "\n");
result.Append(item.CreationTime.Ticks.ToString("0"));
Utils.WriteString(outputStream, result.ToString());
Utils.WriteString(outputStream, item.Response);
}
public override void Write(Stream outputStream, ICacheItem cacheItem)
{
ResponseCacheItem item = (ResponseCacheItem)cacheItem;
StringBuilder result = new StringBuilder();
result.Append(item.Url.AbsoluteUri + "\n");
result.Append(item.CreationTime.Ticks.ToString(System.Globalization.NumberFormatInfo.InvariantInfo));
UtilityMethods.WriteString(outputStream, result.ToString());
UtilityMethods.WriteString(outputStream, item.Response);
}
public override ICacheItem Read(Stream inputStream)
{
string s = UtilityMethods.ReadString(inputStream);
string response = UtilityMethods.ReadString(inputStream);
string[] chunks = s.Split('\n');
// Corrupted cache record, so throw IOException which is then handled and returns partial cache.
if (chunks.Length != 2)
{
throw new IOException("Unexpected number of chunks found");
}
string url = chunks[0];
DateTime creationTime = new DateTime(long.Parse(chunks[1], System.Globalization.NumberStyles.Any, System.Globalization.NumberFormatInfo.InvariantInfo));
ResponseCacheItem item = new ResponseCacheItem(new Uri(url), response, creationTime);
return(item);
}
public override ICacheItem Read(Stream inputStream)
{
string s = Utils.ReadString(inputStream);
string response = Utils.ReadString(inputStream);
string[] chunks = s.Split('\n');
// Corrupted cache record, so throw IOException which is then handled and returns partial cache.
if (chunks.Length != 2)
{
throw new IOException("Unexpected number of chunks found");
}
string url = chunks[0];
DateTime creationTime = new DateTime(long.Parse(chunks[1]));
ResponseCacheItem item = new ResponseCacheItem();
item.Url = url;
item.CreationTime = creationTime;
item.Response = response;
return(item);
}
private T GetResponse <T>(Dictionary <string, string> parameters, TimeSpan cacheTimeout) where T : IFlickrParsable, new()
{
// Flow for GetResponse.
// 1. Check API Key
// 2. Calculate Cache URL.
// 3. Check Cache for URL.
// 4. Get Response if not in cache.
// 5. Write Cache.
// 6. Parse Response.
CheckApiKey();
parameters["api_key"] = ApiKey;
// If performing one of the old 'flickr.auth' methods then use old authentication details.
var method = parameters["method"];
// User of obsolete AuthToken property while we transition over to the new OAuth authentication process.
#pragma warning disable 612,618
if (method.StartsWith("flickr.auth") && !method.EndsWith("oauth.checkToken"))
{
if (!String.IsNullOrEmpty(AuthToken))
{
parameters["auth_token"] = AuthToken;
}
}
else
{
// If OAuth Token exists or no authentication required then use new OAuth
if (!String.IsNullOrEmpty(OAuthAccessToken) || String.IsNullOrEmpty(AuthToken))
{
parameters.Remove("api_key");
OAuthGetBasicParameters(parameters);
if (!String.IsNullOrEmpty(OAuthAccessToken))
{
parameters["oauth_token"] = OAuthAccessToken;
}
}
else
{
parameters["auth_token"] = AuthToken;
}
}
#pragma warning restore 612,618
var url = CalculateUri(parameters, !String.IsNullOrEmpty(sharedSecret));
lastRequest = url;
string responseXml;
if (InstanceCacheDisabled)
{
responseXml = FlickrResponder.GetDataResponse(this, BaseUri.AbsoluteUri, parameters);
}
else
{
var urlComplete = url;
var cached = (ResponseCacheItem)Cache.Responses.Get(urlComplete, cacheTimeout, true);
if (cached != null)
{
Debug.WriteLine("Cache hit.");
responseXml = cached.Response;
}
else
{
Debug.WriteLine("Cache miss.");
responseXml = FlickrResponder.GetDataResponse(this, BaseUri.AbsoluteUri, parameters);
var resCache = new ResponseCacheItem(new Uri(urlComplete), responseXml, DateTime.UtcNow);
Cache.Responses.Shrink(Math.Max(0, Cache.CacheSizeLimit - responseXml.Length));
Cache.Responses[urlComplete] = resCache;
}
}
lastResponse = responseXml;
//responseXml = responseXml.Trim();
var reader = new XmlTextReader(new StringReader(responseXml))
{
WhitespaceHandling = WhitespaceHandling.None,
};
if (!reader.ReadToDescendant("rsp"))
{
throw new XmlException("Unable to find response element 'rsp' in Flickr response");
}
while (reader.MoveToNextAttribute())
{
if (reader.LocalName == "stat" && reader.Value == "fail")
{
throw ExceptionHandler.CreateResponseException(reader);
}
}
reader.MoveToElement();
reader.Read();
var item = new T();
item.Load(reader);
return(item);
}
public override ICacheItem Read(Stream inputStream)
{
string s = UtilityMethods.ReadString(inputStream);
string response = UtilityMethods.ReadString(inputStream);
string[] chunks = s.Split('\n');
// Corrupted cache record, so throw IOException which is then handled and returns partial cache.
if (chunks.Length != 2)
throw new IOException("Unexpected number of chunks found");
string url = chunks[0];
var creationTime = new DateTime(long.Parse(chunks[1], System.Globalization.NumberStyles.Any, System.Globalization.NumberFormatInfo.InvariantInfo));
var item = new ResponseCacheItem(new Uri(url), response, creationTime);
return item;
}
private T GetResponse <T>(Dictionary <string, string> parameters, TimeSpan cacheTimeout) where T : IFlickrParsable, new()
{
// Flow for GetResponse.
// 1. Check API Key
// 2. Calculate Cache URL.
// 3. Check Cache for URL.
// 4. Get Response if not in cache.
// 5. Write Cache.
// 6. Parse Response.
CheckApiKey();
parameters["api_key"] = ApiKey;
// If performing one of the old 'flickr.auth' methods then use old authentication details.
var method = parameters["method"];
// User of obsolete AuthToken property while we transition over to the new OAuth authentication process.
#pragma warning disable 612,618
if (method.StartsWith("flickr.auth", StringComparison.Ordinal) && !method.EndsWith("oauth.checkToken", StringComparison.Ordinal))
{
if (!string.IsNullOrEmpty(AuthToken))
{
parameters["auth_token"] = AuthToken;
}
}
else
{
// If OAuth Token exists or no authentication required then use new OAuth
if (!string.IsNullOrEmpty(OAuthAccessToken) || string.IsNullOrEmpty(AuthToken))
{
parameters.Remove("api_key");
OAuthGetBasicParameters(parameters);
if (!string.IsNullOrEmpty(OAuthAccessToken))
{
parameters["oauth_token"] = OAuthAccessToken;
}
}
else
{
parameters["auth_token"] = AuthToken;
}
}
#pragma warning restore 612,618
var url = CalculateUri(parameters, !string.IsNullOrEmpty(sharedSecret));
lastRequest = url;
string responseXml;
if (InstanceCacheDisabled)
{
responseXml = FlickrResponder.GetDataResponse(this, BaseUri.AbsoluteUri, parameters);
}
else
{
var urlComplete = url;
var cached = (ResponseCacheItem)Cache.Responses.Get(urlComplete, cacheTimeout, true);
if (cached != null)
{
Debug.WriteLine("Cache hit.");
responseXml = cached.Response;
}
else
{
Debug.WriteLine("Cache miss.");
responseXml = FlickrResponder.GetDataResponse(this, BaseUri.AbsoluteUri, parameters);
var resCache = new ResponseCacheItem(new Uri(urlComplete), responseXml, DateTime.UtcNow);
Cache.Responses.Shrink(Math.Max(0, Cache.CacheSizeLimit - responseXml.Length));
Cache.Responses[urlComplete] = resCache;
}
}
lastResponse = responseXml;
var item = new T();
item.Load(responseXml);
return(item);
}
private Response GetResponse(Hashtable parameters, TimeSpan cacheTimeout)
{
// Calulate URL
StringBuilder UrlStringBuilder = new StringBuilder(BaseUrl, 2 * 1024);
StringBuilder HashStringBuilder = new StringBuilder(_sharedSecret, 2 * 1024);
UrlStringBuilder.Append("?");
parameters["api_key"] = _apiKey;
if( _apiToken != null && _apiToken.Length > 0 )
{
parameters["auth_token"] = _apiToken;
}
string[] keys = new string[parameters.Keys.Count];
parameters.Keys.CopyTo(keys, 0);
Array.Sort(keys);
foreach(string key in keys)
{
if( UrlStringBuilder.Length > BaseUrl.Length + 1 ) UrlStringBuilder.Append("&");
UrlStringBuilder.Append(key);
UrlStringBuilder.Append("=");
UrlStringBuilder.Append(Utils.UrlEncode((string)parameters[key]));
HashStringBuilder.Append(key);
HashStringBuilder.Append(parameters[key]);
}
if (_sharedSecret != null && _sharedSecret.Length > 0)
{
if (UrlStringBuilder.Length > BaseUrl.Length + 1)
{
UrlStringBuilder.Append("&");
}
UrlStringBuilder.Append("api_sig=");
UrlStringBuilder.Append(Md5Hash(HashStringBuilder.ToString()));
}
string url = UrlStringBuilder.ToString();
_lastRequest = url;
_lastResponse = string.Empty;
if( CacheDisabled )
{
string responseXml = DoGetResponse(url);
_lastResponse = responseXml;
return Deserialize(responseXml);
}
else
{
ResponseCacheItem cached = (ResponseCacheItem) Cache.Responses.Get(url, cacheTimeout, true);
if (cached != null)
{
System.Diagnostics.Debug.WriteLine("Cache hit");
_lastResponse = cached.Response;
return Deserialize(cached.Response);
}
else
{
System.Diagnostics.Debug.WriteLine("Cache miss");
string responseXml = DoGetResponse(url);
_lastResponse = responseXml;
ResponseCacheItem resCache = new ResponseCacheItem();
resCache.Response = responseXml;
resCache.Url = url;
resCache.CreationTime = DateTime.UtcNow;
FlickrNet.Response response = Deserialize(responseXml);
if( response.Status == ResponseStatus.OK )
{
Cache.Responses.Shrink(Math.Max(0, Cache.CacheSizeLimit - responseXml.Length));
Cache.Responses[url] = resCache;
}
return response;
}
}
}
public override ICacheItem Read(Stream inputStream)
{
string s = Utils.ReadString(inputStream);
string response = Utils.ReadString(inputStream);
string[] chunks = s.Split('\n');
// Corrupted cache record, so throw IOException which is then handled and returns partial cache.
if( chunks.Length != 2 )
throw new IOException("Unexpected number of chunks found");
string url = chunks[0];
DateTime creationTime = new DateTime(long.Parse(chunks[1]));
ResponseCacheItem item = new ResponseCacheItem();
item.Url = url;
item.CreationTime = creationTime;
item.Response = response;
return item;
}
