/// <summary>
/// Submits the request and returns the response.
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
public override IOResponse Submit(IORequest request)
{
// write request
var webRequest = WriteWebRequest(request);
if (webRequest == null)
{
throw new InvalidOperationException();
}
// submit request and retrieve response
var webResponse = webRequest.GetResponse();
if (webResponse == null)
{
throw new InvalidOperationException();
}
// read response
var response = ReadResponse(webResponse, request);
if (response == null)
{
throw new InvalidOperationException();
}
return(response);
}
/// <summary>
/// Initializes a new instance.
/// </summary>
/// <param name="ioService"></param>
/// <param name="uri"></param>
/// <param name="accept"></param>
public static TextReader Create(IIOService ioService, Uri uri, MediaRangeList accept, Encoding encoding)
{
Contract.Requires <ArgumentNullException>(ioService != null);
Contract.Requires <ArgumentNullException>(uri != null);
var request = new IORequest(uri, IOMethod.Get)
{
Accept = accept,
};
var response = ioService.Send(request);
if (response.Status != IOStatus.Success)
{
throw new IOException();
}
if (!response.ContentType.Matches(accept))
{
throw new IOException();
}
if (encoding != null)
{
return(new IOTextReader(uri, response.Content, encoding));
}
else
{
return(new IOTextReader(uri, response.Content));
}
}
/// <summary>
/// Retrieves a <see cref="WebRequest"/> for the given <see cref="IORequest"/>.
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
protected virtual WebRequest WriteWebRequest(IORequest request)
{
Contract.Requires <ArgumentNullException>(request != null);
// generate new web request
var webRequest = WebRequest.Create(request.ResourceUri);
webRequest.Method = request.Method;
webRequest.ContentType = request.ContentType;
if (request.Content != null &&
request.Content.CanRead &&
request.Content.Length > 0)
{
request.Content.CopyTo(webRequest.GetRequestStream());
}
// populate headers
foreach (var pair in request.Headers)
{
webRequest.Headers.Add(pair.Key, pair.Value);
}
return(webRequest);
}
/// <summary>
/// Returns <c>true</c> if the processor can handle this request.
/// </summary>
/// <param name="submit"></param>
/// <returns></returns>
public override Priority CanSend(IORequest submit)
{
if (submit.ResourceUri.Scheme == Uri.UriSchemeFile)
return Priority.Default;
else
return Priority.Ignore;
}
/// <summary>
/// Initializes a new instance.
/// </summary>
/// <param name="request"></param>
/// <param name="status"></param>
public IOResponse(IORequest request, IOStatus status)
{
Contract.Requires<ArgumentNullException>(request != null);
this.request = request;
this.status = status;
this.headers = new Headers();
}
/// <summary>
/// Submits the given request.
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
public IOResponse Send(IORequest request)
{
var transport = GetTransport(request);
if (transport == null)
return new IOResponse(request, IOStatus.NoTransport);
return transport.Submit(request);
}
/// <summary>
/// Initializes a new instance.
/// </summary>
/// <param name="request"></param>
/// <param name="status"></param>
public IOResponse(IORequest request, IOStatus status)
{
Contract.Requires <ArgumentNullException>(request != null);
this.request = request;
this.status = status;
this.headers = new Headers();
}
/// <summary>
/// Initializes a new instance.
/// </summary>
/// <param name="request"></param>
/// <param name="status"></param>
/// <param name="content"></param>
/// <param name="contentType"></param>
public IOResponse(IORequest request, IOStatus status, Stream content, MediaRange contentType)
: this(request, status)
{
Contract.Requires <ArgumentNullException>(request != null);
Contract.Requires <ArgumentNullException>(content != null);
this.content = content;
this.contentType = contentType;
}
/// <summary>
/// Initializes a new instance.
/// </summary>
/// <param name="request"></param>
/// <param name="status"></param>
/// <param name="content"></param>
/// <param name="contentType"></param>
public IOResponse(IORequest request, IOStatus status, Stream content, MediaRange contentType)
: this(request, status)
{
Contract.Requires<ArgumentNullException>(request != null);
Contract.Requires<ArgumentNullException>(content != null);
this.content = content;
this.contentType = contentType;
}
/// <summary>
/// Submits the given request.
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
public IOResponse Send(IORequest request)
{
var transport = GetTransport(request);
if (transport == null)
{
return(new IOResponse(request, IOStatus.NoTransport));
}
return(transport.Submit(request));
}
/// <summary>
/// Gets the <see cref="IIOTransport"/> to handle the given request.
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
IIOTransport GetTransport(IORequest request)
{
Contract.Requires <ArgumentNullException>(request != null);
return(transports
.Select(i => new { Priority = i.CanSend(request), Processor = i })
.Where(i => i.Priority != Priority.Ignore)
.OrderByDescending(i => i.Priority)
.Select(i => i.Processor)
.FirstOrDefault());
}
/// <summary>
/// Gets the <see cref="IIOTransport"/> to handle the given request.
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
IIOTransport GetTransport(IORequest request)
{
Contract.Requires<ArgumentNullException>(request != null);
return transports
.Select(i => new { Priority = i.CanSend(request), Processor = i })
.Where(i => i.Priority != Priority.Ignore)
.OrderByDescending(i => i.Priority)
.Select(i => i.Processor)
.FirstOrDefault();
}
/// <summary>
/// Returns <c>true</c> if the processor can handle this request.
/// </summary>
/// <param name="submit"></param>
/// <returns></returns>
public override Priority CanSend(IORequest submit)
{
if (submit.ResourceUri.Scheme == Uri.UriSchemeFile)
{
return(Priority.Default);
}
else
{
return(Priority.Ignore);
}
}
public override IOResponse Submit(IORequest request)
{
var stm = typeof(Ref).Assembly
.GetManifestResourceNames()
.Where(i => i.EndsWith("." + request.ResourceUri.LocalPath.Substring(1)))
.Select(i => typeof(Ref).Assembly.GetManifestResourceStream(i))
.FirstOrDefault();
if (stm == null)
return null;
return new IOResponse(request, IOStatus.Success, stm, "application/xml");
}
/// <summary>
/// Deserializes the <see cref="WebResponse"/> into a <see cref="IOResponse"/>.
/// </summary>
/// <param name="webResponse"></param>
/// <param name="request"></param>
/// <returns></returns>
protected virtual IOResponse ReadResponse(WebResponse webResponse, IORequest request)
{
Contract.Requires<ArgumentNullException>(webResponse != null);
Contract.Requires<ArgumentNullException>(request != null);
// generate new response
var response = new IOResponse(
request,
ReadResponseStatus(webResponse),
webResponse.GetResponseStream(),
webResponse.ContentType);
// populate headers
foreach (var name in webResponse.Headers.AllKeys)
response.Headers[name] = webResponse.Headers[name];
return response;
}
/// <summary>
/// Submits the request and returns the response.
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
public override IOResponse Submit(IORequest request)
{
// write request
var webRequest = WriteWebRequest(request);
if (webRequest == null)
throw new InvalidOperationException();
// submit request and retrieve response
var webResponse = webRequest.GetResponse();
if (webResponse == null)
throw new InvalidOperationException();
// read response
var response = ReadResponse(webResponse, request);
if (response == null)
throw new InvalidOperationException();
return response;
}
/// <summary>
/// Deserializes the <see cref="WebResponse"/> into a <see cref="IOResponse"/>.
/// </summary>
/// <param name="webResponse"></param>
/// <param name="request"></param>
/// <returns></returns>
protected virtual IOResponse ReadResponse(WebResponse webResponse, IORequest request)
{
Contract.Requires <ArgumentNullException>(webResponse != null);
Contract.Requires <ArgumentNullException>(request != null);
// generate new response
var response = new IOResponse(
request,
ReadResponseStatus(webResponse),
webResponse.GetResponseStream(),
webResponse.ContentType);
// populate headers
foreach (var name in webResponse.Headers.AllKeys)
{
response.Headers[name] = webResponse.Headers[name];
}
return(response);
}
/// <summary>
/// Initializes a new instance.
/// </summary>
/// <param name="ioService"></param>
/// <param name="uri"></param>
/// <param name="accept"></param>
public static TextReader Create(IIOService ioService, Uri uri, MediaRangeList accept, Encoding encoding)
{
Contract.Requires<ArgumentNullException>(ioService != null);
Contract.Requires<ArgumentNullException>(uri != null);
var request = new IORequest(uri, IOMethod.Get)
{
Accept = accept,
};
var response = ioService.Send(request);
if (response.Status != IOStatus.Success)
throw new IOException();
if (!response.ContentType.Matches(accept))
throw new IOException();
if (encoding != null)
return new IOTextReader(uri, response.Content, encoding);
else
return new IOTextReader(uri, response.Content);
}
public override Priority CanSend(IORequest request)
{
return request.ResourceUri.Scheme == "nx-example" ? Priority.High : Priority.Ignore;
}
/// <summary> /// Handles a submitted request. /// </summary> /// <param name="request"></param> /// <returns></returns> public abstract IOResponse Submit(IORequest request);
/// <summary> /// Return <c>true</c> if your <see cref="IIOTransport"/> supports the given <see cref="IORequest"/>. /// </summary> /// <param name="request"></param> /// <returns></returns> public abstract Priority CanSend(IORequest request);
public Priority CanSend(IORequest request)
{
Contract.Requires<ArgumentNullException>(request != null);
throw new NotImplementedException();
}
public Priority CanSend(IORequest request)
{
Contract.Requires <ArgumentNullException>(request != null);
throw new NotImplementedException();
}
public IOResponse Send(IORequest request)
{
Contract.Requires <ArgumentNullException>(request != null);
Contract.Ensures(Contract.Result <IOResponse>() != null);
throw new NotImplementedException();
}
/// <summary>
/// Retrieves a <see cref="WebRequest"/> for the given <see cref="IORequest"/>.
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
protected virtual WebRequest WriteWebRequest(IORequest request)
{
Contract.Requires<ArgumentNullException>(request != null);
// generate new web request
var webRequest = WebRequest.Create(request.ResourceUri);
webRequest.Method = request.Method;
webRequest.ContentType = request.ContentType;
if (request.Content != null &&
request.Content.CanRead &&
request.Content.Length > 0)
request.Content.CopyTo(webRequest.GetRequestStream());
// populate headers
foreach (var pair in request.Headers)
webRequest.Headers.Add(pair.Key, pair.Value);
return webRequest;
}
/// <summary> /// Return <c>true</c> if your <see cref="IIOTransport"/> supports the given <see cref="IORequest"/>. /// </summary> /// <param name="request"></param> /// <returns></returns> public abstract Priority CanSend(IORequest request);
public override Priority CanSend(IORequest request)
{
return Priority.Low;
}
/// <summary> /// Handles a submitted request. /// </summary> /// <param name="request"></param> /// <returns></returns> public abstract IOResponse Submit(IORequest request);
/// <summary>
/// Retrieves a <see cref="WebRequest"/> for the given <see cref="ModelRequest"/>.
/// </summary>
/// <param name="request"></param>
/// <returns></returns>
protected virtual IORequest WriteIORequest(ModelRequest request)
{
Contract.Requires<ArgumentNullException>(request != null);
var mediaType = GetMediaType(request);
if (mediaType == null)
return null;
// obtain and build request parts
var cnt = (string)null;
var stm = new MemoryStream();
var uri = request.ResourceUri;
if (IsQuery(request) && request.Body != null)
{
// serialize body to string
var u = new UriBuilder(uri);
var s = new StringBuilder(u.Query);
using (var w = new StringWriter(s))
Serialize(w, request.Body, mediaType);
u.Query = s.ToString();
// replace uri
uri = u.Uri;
}
else if (request.Body != null)
{
// serialize data to body
using (var w = new StreamWriter(stm, request.Encoding, 1024, true))
Serialize(w, request.Body, mediaType);
// configure body
cnt = mediaType;
stm.Position = 0;
}
// generate new web request
var ioRequest = new IORequest(uri, GetMethod(request));
ioRequest.ContentType = cnt;
ioRequest.Headers.Add(request.Headers);
ioRequest.Content = stm;
return ioRequest;
}
/// <summary>
/// Initializes a new instance.
/// </summary>
/// <param name="ioService"></param>
/// <param name="uri"></param>
/// <param name="accept"></param>
public static XmlReader Create(IIOService ioService, Uri uri, MediaRangeList accept)
{
Contract.Requires<ArgumentNullException>(ioService != null);
Contract.Requires<ArgumentNullException>(uri != null);
// default acceptable media types
accept = !accept.IsEmpty ? accept : XML_MEDIA_RANGES;
// format request
var request = new IORequest(uri, IOMethod.Get)
{
Accept = accept,
};
// get response
var response = ioService.Send(request);
if (response.Status != IOStatus.Success)
throw new XmlException();
// acceptable response?
if (!response.ContentType.Matches(accept))
throw new XmlException();
return new IOXmlReader(uri, response.Content);
}
public override Priority CanSend(IORequest request)
{
return(Priority.Low);
}
public IOResponse Submit(IORequest request)
{
Contract.Requires<ArgumentNullException>(request != null);
Contract.Ensures(Contract.Result<IOResponse>() != null);
throw new NotImplementedException();
}
