public IAsyncResult MakeRequest ( TransformRequest request, AsyncCallback callback, object extraData ) {
//if (m_postOffice == null) {
// m_postOffice = m_loadBalancer.GetPostOffice;
//}
TransformProcessDelegate transformProcessDelegate = m_transform.BeginTransformProcess;
Console.WriteLine("Make Transform Request Reached");
return transformProcessDelegate.BeginInvoke(request, callback, transformProcessDelegate);
//return m_transform.BeginTransformProcess(request);
}
public XPathServiceOperationNavigator ( HttpContext httpContext, Context context, Transform.Context transformContext, XPathNavigator navigator, TransformRequest request, TransformResponse response, XsltTransformationManager transformationManager ) {
m_navigator = navigator;
m_httpContext = httpContext;
m_context = context;
m_transformContext = transformContext;
m_request = request;
m_response = response;
m_xslTransformationManager = transformationManager;
m_transform = transformationManager.Transform;
m_encoding = new UTF8Encoding();
}
public XmlServiceOperationReader(HttpContext httpContext, Context context, Transform.Context transformContext, XmlReader reader, TransformRequest request, TransformResponse response, XsltTransformationManager transformationManager) {
m_reader = reader;
m_httpContext = httpContext;
m_context = context;
m_transformContext = transformContext;
m_request = request;
m_response = response;
m_xslTransformationManager = transformationManager;
m_transform = transformationManager.Transform;
m_encoding = new UTF8Encoding();
}
public TransformResponse BeginTransformProcess(TransformRequest request)
{
this.LogInfo("BeginTransformProcess reached");
TransformContext transformContext = (TransformContext)request.TransformContext;
XsltTransformationManager transformationManager = transformContext.XsltTransformationManager;
TransformResponse response = transformContext.Response;
XsltTransformer transformer = transformationManager.GetTransformer(transformContext.XsltName);
transformer.SetParameter(new QName("", "", "current-context"), new XdmValue((XdmItem)XdmAtomicValue.wrapExternalObject(transformContext.HttpContext)));
if (transformContext.Context.XsltParams.Count > 0)
{
foreach (DictionaryEntry param in transformContext.Context.XsltParams)
{
string name = (string)param.Key;
transformer.SetParameter(new QName("", "", name), new XdmValue((XdmItem)XdmAtomicValue.wrapExternalObject(param.Value)));
}
}
Uri requestXmlUri = new Uri(transformContext.Context.RequestUri);
transformer.InputXmlResolver = transformationManager.Resolver;
transformer.InitialContextNode = transformationManager.GetXdmNode(transformContext.Context.RequestXmlETag, transformContext.Context.RequestUri);
this.LogDebug(transformer.InitialContextNode.OuterXml);
Serializer destination = transformationManager.Serializer;
StringBuilder builder = new StringBuilder();
destination.SetOutputWriter(new StringWriter(builder));
lock (m_lock)
{
transformer.Run(destination);
}
response.TransformResult = builder.ToString();
this.LogDebug("Output of transform: {0}", response.TransformResult);
return response;
}
public IAsyncResult BeginProcessRequest ( HttpContext context, AsyncCallback cb, object extraData ) {
m_stopwatch.Start();
FileInfo fileInfo = new FileInfo(context.Request.MapPath(context.Request.CurrentExecutionFilePath));
this.LogDebug("File Date: {0}; File Length: {1}", fileInfo.LastWriteTimeUtc, fileInfo.Length);
m_CONTENT_IS_MEMCACHED = false;
m_USE_MEMCACHED = false;
m_httpContext = context;
m_returnOutput = true;
m_httpMethod = m_httpContext.Request.HttpMethod;
m_memcachedClient = (Client)context.Application["memcached"];
m_encoding = (UTF8Encoding)context.Application["encoding"];
m_queueClient = (QueueClient)context.Application["queueclient"];
m_hashkey = (string)context.Application["hashkey"];
m_xmlServiceOperationManager = (XPathServiceOperationManager)context.Application["xmlServiceOperationManager"];
m_xslTransformationManager = (XsltTransformationManager)context.Application["xslTransformationManager"];
m_transform = m_xslTransformationManager.Transform;
m_xsltParams = (Hashtable)context.Application["globalXsltParams"];
m_transformContext = new Transform.Context(context, m_hashAlgorithm, (string)context.Application["hashkey"], fileInfo, (Hashtable)m_xsltParams.Clone(), fileInfo.LastWriteTimeUtc, fileInfo.Length);
m_namedXsltHashtable = (Hashtable)context.Application["namedXsltHashtable"];
m_xmlSourceETagDictionary = m_xmlServiceOperationManager.XmlSourceETagDictionary;
m_xmlReaderDictionary = m_xmlServiceOperationManager.XmlReaderDictionary;
m_context = new Context(context, m_hashAlgorithm, m_hashkey, fileInfo, fileInfo.LastWriteTimeUtc, fileInfo.Length);
this.LogDebug("File Date: {0}; File Length: {1}", m_context.RequestXmlFileInfo.LastWriteTimeUtc, m_context.RequestXmlFileInfo.Length);
m_nuxleusAsyncResult = new Nuxleus.Core.NuxleusAsyncResult(cb, extraData);
m_callback = cb;
m_nuxleusAsyncResult.m_context = context;
m_builder = new StringBuilder();
m_CONTENT_IS_MEMCACHED = false;
m_USE_MEMCACHED = (bool)context.Application["usememcached"];
Uri requestUri = new Uri(m_context.RequestUri);
m_requestHashcode = m_context.GetRequestHashcode(true).ToString();
m_lastModifiedKey = String.Format("LastModified:{0}", m_context.RequestUri.GetHashCode());
m_lastModifiedDate = String.Empty;
m_request = new TransformRequest();
m_response = new TransformResponse();
Guid requestGuid = Guid.NewGuid();
m_request.ID = requestGuid;
context.Response.ContentType = "text/xml";
IEnumerator headers = context.Request.Headers.GetEnumerator();
for (int i = 0; headers.MoveNext(); i++) {
string local = context.Request.Headers.AllKeys[i].ToString();
this.LogDebug("KeyName: {0}, KeyValue: {1}", local, context.Request.Headers[local]);
}
bool hasXmlSourceChanged = m_xmlServiceOperationManager.HasXmlSourceChanged(m_context.RequestXmlETag, requestUri);
//if (m_USE_MEMCACHED) {
// string obj = (string)m_memcachedClient.Get(m_context.GetRequestHashcode(true).ToString());
// if (obj != null && !hasXmlSourceChanged) {
// m_response.TransformResult = (string)obj;
// m_CONTENT_IS_MEMCACHED = true;
// if ((bool)context.Application["debug"]) {
// context.Response.ContentType = "text";
// }
// } else {
// //m_writer = new StringWriter(m_builder);
// m_CONTENT_IS_MEMCACHED = false;
// }
//} else {
// m_writer = new StringWriter(m_builder);
//}
m_writer = new StringWriter(m_builder);
try {
switch (m_httpMethod) {
case "GET":
case "HEAD":
case "POST": {
string name = String.Format("Name: {0}", context.Request.QueryString["name"]);
this.LogDebug("QueryString Length: {0}", context.Request.QueryString.Count);
this.LogDebug(name);
this.LogDebug("If-None-Match: {0}, RequestHashCode: {1}", context.Request.Headers["If-None-Match"], m_requestHashcode);
this.LogDebug(context.Request.Path);
if (context.Request.Headers["If-None-Match"] == m_requestHashcode) {
object lastModified;
this.LogDebug("They matched.");
this.LogDebug("Use memcached: {0}, KeyExists: {1}, XmlSource Changed: {2}", m_USE_MEMCACHED, m_memcachedClient.TryGet(m_lastModifiedKey, out lastModified), hasXmlSourceChanged);
this.LogDebug("Last Modified Key Value: {0}", m_lastModifiedKey);
if (m_USE_MEMCACHED && m_memcachedClient.TryGet(m_lastModifiedKey, out lastModified) && !hasXmlSourceChanged)
{
m_lastModifiedDate = (string)m_memcachedClient.Get(m_lastModifiedKey);
this.LogDebug("Last Modified Date: {0}", m_lastModifiedDate);
if (context.Request.Headers["If-Modified-Since"] == m_lastModifiedDate) {
context.Response.StatusCode = 304;
m_returnOutput = false;
goto CompleteCall;
} else {
goto Process;
}
} else if (m_CONTENT_IS_MEMCACHED) {
goto CompleteCall;
} else {
goto Process;
}
} else {
this.LogDebug("Headers do not match. Beginning transformation process...");
m_returnOutput = true;
goto Process;
}
}
case "PUT": {
goto CompleteCall;
}
case "DELETE": {
goto CompleteCall;
}
default: {
goto CompleteCall;
}
}
} catch (Exception ex) {
m_exception = ex;
WriteError();
goto CompleteCall;
}
Process:
try {
this.LogDebug("Processing Transformation");
this.LogDebug("Request XML ETag Value: {0}, Request URI: {1}", m_context.RequestXmlETag, requestUri);
XPathNavigator navigator = m_xmlServiceOperationManager.GetXPathNavigator(m_context.RequestXmlETag, requestUri);
//if (initialReader == null) {
// initialReader = reader;
//} else {
// this.LogDebug("XmlReaders are the same object: {0}", initialReader.Equals(reader));
//}
//this.LogDebug("XML Reader Value: {0}", reader.ReadOuterXml());
//this.LogDebug("XML Reader Hash: {0}", reader.GetHashCode());
XPathServiceOperationNavigator serviceOperationReader = new XPathServiceOperationNavigator(context, m_context, m_transformContext, navigator, m_request, m_response, m_xslTransformationManager);
m_response = serviceOperationReader.Process();
} catch (Exception e) {
this.LogDebug("Error: {0} in transformation.", e.Message);
m_exception = e;
WriteError();
}
goto CompleteCall;
CompleteCall:
this.LogDebug("CompleteCall reached");
if (m_lastModifiedDate == String.Empty) {
m_lastModifiedDate = DateTime.UtcNow.ToString("r");
}
context.Response.AppendHeader("Cache-Control", "max-age=86400");
context.Response.AddHeader("Last-Modified", m_lastModifiedDate);
context.Response.AddHeader("ETag", String.Format("\"{0}\"", m_requestHashcode));
m_nuxleusAsyncResult.CompleteCall();
return m_nuxleusAsyncResult;
}