// TODO catch if 404 etc happens
public static XmlDocument FetchFeedAndNormaliseToAtom(string url)
{
string cacheKey = string.Format("SyndicationUtil.FetchFeedAndNormaliseToAtom::{0}", url);
if (CacheUtil.Exist(cacheKey))
{
return(CacheUtil.Get <XmlDocument>(cacheKey));
}
XmlDocument doc = null;
Assert.EnsureStringValue(url, "url");
SyndicationFeed feed = null;
using (XmlTextReader r = new XmlTextReader(url))
{
feed = SyndicationFeed.Load(r);
}
if (feed == null)
{
return(null);
}
StringWriter stringWriter = new StringWriter();
XmlTextWriter xmltextWriter = new XmlTextWriter(stringWriter);
xmltextWriter.Formatting = Formatting.Indented;
Atom10FeedFormatter formatter = feed.GetAtom10Formatter();
formatter.WriteTo(xmltextWriter);
doc = new XmlDocument();
string xml = stringWriter.ToString();
// We do not wan't namespaces on the first node
// TODO Do this smarter
xml = xml.Remove(0, xml.IndexOf(">"));
xml = "<feed>" + xml;
doc.LoadXml(xml);
CacheUtil.Insert(cacheKey, doc, 5, false);
return(doc);
}
private static string GetFormatViaKey(string key, out bool failed)
{
string cacheKey = string.Format("{0}#key:{1}", CacheUtil.GetCacheKey("FormatDate"), key); //"CacheUtil.GetCacheKey("FormatDate");
if (CacheUtil.Exist(cacheKey))
{
failed = false;
return(CacheUtil.Get <string>(cacheKey));
}
Node homeNode = UpacContext.Current.HomeNode;
if (homeNode == null)
{
failed = true;
return("FormatDate failed: Not in upac context");
}
Node node = homeNode.GetDescendantViaDocumentTypePath("ConfigurationContainer/ConfigurationDateTime");
if (node == null)
{
failed = true;
return("FormatDate failed: Could not find config node ConfigurationContainer/ConfigurationDateTime");
}
string format = node.GetPropertyValue(key);
if (string.IsNullOrEmpty(format))
{
failed = true;
return(String.Concat("Date format key not found: ", key));
}
CacheUtil.Insert(cacheKey, format, 10, true);
failed = false;
return(format);
}
/// <summary>
/// Gets the O embed HTML.
/// </summary>
/// <param name="url">The OEmbed URL/Source.</param>
/// <param name="maxWidth">Width of the max.</param>
/// <param name="maxHeight">Height of the max.</param>
/// <returns>The html or an error message</returns>
public static string GetOEmbedHtml(string url, string maxWidth, string maxHeight)
{
StringBuilder output = new StringBuilder();
if (!string.IsNullOrEmpty(url))
{
string jsonResponse = string.Empty;
StringBuilder oohembedUrl = new StringBuilder();
oohembedUrl.Append("http://oohembed.com/oohembed/?");
if (!string.IsNullOrEmpty(maxWidth))
{
int width = CommonUtil.ConvertToIntSafe(maxWidth, -1);
if (width > -1)
{
oohembedUrl.Append("maxwidth=");
oohembedUrl.Append(width);
oohembedUrl.Append("&");
}
}
if (!string.IsNullOrEmpty(maxHeight))
{
int height = CommonUtil.ConvertToIntSafe(maxHeight, -1);
if (height > -1)
{
oohembedUrl.Append("maxheight=");
oohembedUrl.Append(height);
oohembedUrl.Append("&");
}
}
oohembedUrl.Append("url=");
oohembedUrl.Append(HttpUtility.UrlEncode(url));
string cacheKey = string.Format("Upac.Core.Utilities.OEmbed::{0}", oohembedUrl);
Log.DebugFormat("Try to look in cache via cachekey: {0}", cacheKey);
if (CacheUtil.Exist(cacheKey))
{
Log.Debug("Cache gave a hit. Return html from cache");
return(CacheUtil.Get <string>(cacheKey));
}
Log.Debug("No content in cache");
System.Net.WebClient webClient = new System.Net.WebClient();
try
{
jsonResponse = webClient.DownloadString(oohembedUrl.ToString());
}
catch (System.Net.WebException exception)
{
if (exception.Status != System.Net.WebExceptionStatus.ProtocolError)
{
Log.Error("Exception smidt", exception);
throw;
}
// If it's a ProtocolError.
// oembed throws a 404 status, if the resource could not be looked up.
output.Append("<a href=\"" + url + "\">" + url + "</a>");
output.Append("<br /><em>Error with embedding the source<br />oohembed source: " + oohembedUrl + "</em>");
}
if (!string.IsNullOrEmpty(jsonResponse))
{
JavaScriptSerializer scriptSerializer = new JavaScriptSerializer();
OEmbedResponse businessObject = scriptSerializer.Deserialize <OEmbedResponse>(jsonResponse);
string html = businessObject.GetHtml();
CacheUtil.Insert(cacheKey, html, 10, false);
output.Append(html);
}
}
return(output.ToString());
}