/// <summary> /// Converts a CloudEvent to <see cref="HttpContent"/>. /// </summary> /// <param name="cloudEvent">The CloudEvent to convert. Must not be null, and must be a valid CloudEvent.</param> /// <param name="contentMode">Content mode. Structured or binary.</param> /// <param name="formatter">The formatter to use within the conversion. Must not be null.</param> public static HttpContent ToHttpContent(this CloudEvent cloudEvent, ContentMode contentMode, CloudEventFormatter formatter) { Validation.CheckCloudEventArgument(cloudEvent, nameof(cloudEvent)); Validation.CheckNotNull(formatter, nameof(formatter)); ReadOnlyMemory <byte> content; // The content type to include in the ContentType header - may be the data content type, or the formatter's content type. ContentType?contentType; switch (contentMode) { case ContentMode.Structured: content = formatter.EncodeStructuredModeMessage(cloudEvent, out contentType); break; case ContentMode.Binary: content = formatter.EncodeBinaryModeEventData(cloudEvent); contentType = MimeUtilities.CreateContentTypeOrNull(formatter.GetOrInferDataContentType(cloudEvent)); break; default: throw new ArgumentOutOfRangeException(nameof(contentMode), $"Unsupported content mode: {contentMode}"); } ByteArrayContent ret = ToByteArrayContent(content); if (contentType is object) { ret.Headers.ContentType = MimeUtilities.ToMediaTypeHeaderValue(contentType); } else if (content.Length != 0) { throw new ArgumentException(Strings.ErrorContentTypeUnspecified, nameof(cloudEvent)); } // Map headers in either mode. // Including the headers in structured mode is optional in the spec (as they're already within the body) but // can be useful. ret.Headers.Add(HttpUtilities.SpecVersionHttpHeader, HttpUtilities.EncodeHeaderValue(cloudEvent.SpecVersion.VersionId)); foreach (var attributeAndValue in cloudEvent.GetPopulatedAttributes()) { CloudEventAttribute attribute = attributeAndValue.Key; string headerName = HttpUtilities.HttpHeaderPrefix + attribute.Name; object value = attributeAndValue.Value; // Skip the data content type attribute in binary mode, because it's already in the content type header. if (attribute == cloudEvent.SpecVersion.DataContentTypeAttribute && contentMode == ContentMode.Binary) { continue; } else { string headerValue = HttpUtilities.EncodeHeaderValue(attribute.Format(value)); ret.Headers.Add(headerName, headerValue); } } return(ret); }
/// <summary> /// Copies a <see cref="CloudEvent"/> into an <see cref="HttpListenerResponse" />. /// </summary> /// <param name="cloudEvent">The CloudEvent to copy. Must not be null, and must be a valid CloudEvent.</param> /// <param name="destination">The response to copy the CloudEvent to. Must not be null.</param> /// <param name="contentMode">Content mode (structured or binary)</param> /// <param name="formatter">The formatter to use within the conversion. Must not be null.</param> /// <returns>A task representing the asynchronous operation.</returns> public static async Task CopyToHttpListenerResponseAsync(this CloudEvent cloudEvent, HttpListenerResponse destination, ContentMode contentMode, CloudEventFormatter formatter) { Validation.CheckCloudEventArgument(cloudEvent, nameof(cloudEvent)); Validation.CheckNotNull(destination, nameof(destination)); Validation.CheckNotNull(formatter, nameof(formatter)); byte[] content; ContentType contentType; switch (contentMode) { case ContentMode.Structured: content = formatter.EncodeStructuredModeMessage(cloudEvent, out contentType); break; case ContentMode.Binary: content = formatter.EncodeBinaryModeEventData(cloudEvent); contentType = MimeUtilities.CreateContentTypeOrNull(cloudEvent.DataContentType); destination.ContentType = cloudEvent.DataContentType?.ToString() ?? "application/json"; break; default: throw new ArgumentOutOfRangeException(nameof(contentMode), $"Unsupported content mode: {contentMode}"); } if (contentType is object) { destination.ContentType = contentType.ToString(); } else if (content.Length != 0) { throw new ArgumentException(Strings.ErrorContentTypeUnspecified, nameof(cloudEvent)); } // Map headers in either mode. // Including the headers in structured mode is optional in the spec (as they're already within the body) but // can be useful. destination.Headers.Add(HttpUtilities.SpecVersionHttpHeader, HttpUtilities.EncodeHeaderValue(cloudEvent.SpecVersion.VersionId)); foreach (var attributeAndValue in cloudEvent.GetPopulatedAttributes()) { var attribute = attributeAndValue.Key; var value = attributeAndValue.Value; // The content type is already handled based on the content mode. if (attribute != cloudEvent.SpecVersion.DataContentTypeAttribute) { string headerValue = HttpUtilities.EncodeHeaderValue(attribute.Format(value)); destination.Headers.Add(HttpUtilities.HttpHeaderPrefix + attribute.Name, headerValue); } } await destination.OutputStream.WriteAsync(content, 0, content.Length).ConfigureAwait(false); }
private static void MapAttributesToListenerResponse(CloudEvent cloudEvent, HttpListenerResponse httpListenerResponse) { foreach (var attributeAndValue in cloudEvent.GetPopulatedAttributes()) { var attribute = attributeAndValue.Key; var value = attributeAndValue.Value; if (attribute != cloudEvent.SpecVersion.DataContentTypeAttribute) { string headerValue = HttpUtilities.EncodeHeaderValue(attribute.Format(value)); httpListenerResponse.Headers.Add(HttpUtilities.HttpHeaderPrefix + attribute.Name, headerValue); } } }
// TODO: HttpWebResponse as well? /// <summary> /// Copies a <see cref="CloudEvent"/> into the specified <see cref="HttpWebRequest"/>. /// </summary> /// <param name="cloudEvent">CloudEvent to copy. Must not be null, and must be a valid CloudEvent.</param> /// <param name="destination">The request to populate. Must not be null.</param> /// <param name="contentMode">Content mode (structured or binary)</param> /// <param name="formatter">The formatter to use within the conversion. Must not be null.</param> /// <returns>A task representing the asynchronous operation.</returns> public static async Task CopyToHttpWebRequestAsync(this CloudEvent cloudEvent, HttpWebRequest destination, ContentMode contentMode, CloudEventFormatter formatter) { Validation.CheckCloudEventArgument(cloudEvent, nameof(cloudEvent)); Validation.CheckNotNull(destination, nameof(destination)); Validation.CheckNotNull(formatter, nameof(formatter)); ReadOnlyMemory <byte> content; // The content type to include in the ContentType header - may be the data content type, or the formatter's content type. ContentType?contentType; switch (contentMode) { case ContentMode.Structured: content = formatter.EncodeStructuredModeMessage(cloudEvent, out contentType); break; case ContentMode.Binary: content = formatter.EncodeBinaryModeEventData(cloudEvent); contentType = MimeUtilities.CreateContentTypeOrNull(formatter.GetOrInferDataContentType(cloudEvent)); break; default: throw new ArgumentOutOfRangeException(nameof(contentMode), $"Unsupported content mode: {contentMode}"); } if (contentType is object) { destination.ContentType = contentType.ToString(); } else if (content.Length != 0) { throw new ArgumentException(Strings.ErrorContentTypeUnspecified, nameof(cloudEvent)); } // Map headers in either mode. // Including the headers in structured mode is optional in the spec (as they're already within the body) but // can be useful. destination.Headers.Add(HttpUtilities.SpecVersionHttpHeader, HttpUtilities.EncodeHeaderValue(cloudEvent.SpecVersion.VersionId)); foreach (var attributeAndValue in cloudEvent.GetPopulatedAttributes()) { var attribute = attributeAndValue.Key; var value = attributeAndValue.Value; if (attribute != cloudEvent.SpecVersion.DataContentTypeAttribute) { string headerValue = HttpUtilities.EncodeHeaderValue(attribute.Format(value)); destination.Headers.Add(HttpUtilities.HttpHeaderPrefix + attribute.Name, headerValue); } } await BinaryDataUtilities.CopyToStreamAsync(content, destination.GetRequestStream()).ConfigureAwait(false); }
static void MapAttributesToWebRequest(CloudEvent cloudEvent, HttpWebRequest httpWebRequest) { httpWebRequest.Headers.Add(HttpUtilities.SpecVersionHttpHeader, HttpUtilities.EncodeHeaderValue(cloudEvent.SpecVersion.VersionId)); foreach (var attributeAndValue in cloudEvent.GetPopulatedAttributes()) { var attribute = attributeAndValue.Key; var value = attributeAndValue.Value; if (attribute != cloudEvent.SpecVersion.DataContentTypeAttribute) { string headerValue = HttpUtilities.EncodeHeaderValue(attribute.Format(value)); httpWebRequest.Headers.Add(HttpUtilities.HttpHeaderPrefix + attribute.Name, headerValue); } } }
private void MapHeaders(CloudEvent cloudEvent, bool includeDataContentType) { Headers.Add(HttpUtilities.SpecVersionHttpHeader, HttpUtilities.EncodeHeaderValue(cloudEvent.SpecVersion.VersionId)); foreach (var attributeAndValue in cloudEvent.GetPopulatedAttributes()) { CloudEventAttribute attribute = attributeAndValue.Key; string headerName = HttpUtilities.HttpHeaderPrefix + attribute.Name; object value = attributeAndValue.Value; // Only map the data content type attribute to a header if we've been asked to if (attribute == cloudEvent.SpecVersion.DataContentTypeAttribute && !includeDataContentType) { continue; } else { string headerValue = HttpUtilities.EncodeHeaderValue(attribute.Format(value)); Headers.Add(headerName, headerValue); } } }