static void MapAttributesToWebRequest(CloudEvent cloudEvent, HttpWebRequest httpWebRequest)
{
foreach (var attribute in cloudEvent.GetAttributes())
{
if (!attribute.Key.Equals(CloudEventAttributes.DataAttributeName(cloudEvent.SpecVersion)) &&
!attribute.Key.Equals(CloudEventAttributes.DataContentTypeAttributeName(cloudEvent.SpecVersion)))
{
if (attribute.Value is string)
{
httpWebRequest.Headers.Add(HttpHeaderPrefix + attribute.Key, attribute.Value.ToString());
}
else if (attribute.Value is DateTime)
{
httpWebRequest.Headers.Add(HttpHeaderPrefix + attribute.Key,
((DateTime)attribute.Value).ToString("u"));
}
else if (attribute.Value is Uri || attribute.Value is int)
{
httpWebRequest.Headers.Add(HttpHeaderPrefix + attribute.Key, attribute.Value.ToString());
}
else
{
httpWebRequest.Headers.Add(HttpHeaderPrefix + attribute.Key,
Encoding.UTF8.GetString(jsonFormatter.EncodeAttribute(cloudEvent.SpecVersion, attribute.Key,
attribute.Value,
cloudEvent.Extensions.Values)));
}
}
}
}
public CloudEvent DecodeJObject(JObject jObject, IEnumerable <ICloudEventExtension> extensions = null)
{
CloudEventsSpecVersion specVersion = CloudEventsSpecVersion.Default;
if (jObject.ContainsKey(CloudEventAttributes.SpecVersionAttributeName(CloudEventsSpecVersion.V0_1)) ||
jObject.ContainsKey(CloudEventAttributes.SpecVersionAttributeName(CloudEventsSpecVersion.V0_1).ToLowerInvariant()))
{
specVersion = CloudEventsSpecVersion.V0_1;
}
if (jObject.ContainsKey(CloudEventAttributes.SpecVersionAttributeName(CloudEventsSpecVersion.V0_2)) ||
jObject.ContainsKey(CloudEventAttributes.SpecVersionAttributeName(CloudEventsSpecVersion.V0_2).ToLowerInvariant()))
{
specVersion =
((string)jObject[CloudEventAttributes.SpecVersionAttributeName(CloudEventsSpecVersion.V0_2)] ==
"0.2")
? CloudEventsSpecVersion.V0_2
: CloudEventsSpecVersion.Default;
}
var cloudEvent = new CloudEvent(specVersion, extensions);
var attributes = cloudEvent.GetAttributes();
foreach (var keyValuePair in jObject)
{
if (keyValuePair.Key.Equals(
CloudEventAttributes.SpecVersionAttributeName(CloudEventsSpecVersion.V0_1), StringComparison.InvariantCultureIgnoreCase) ||
keyValuePair.Key.Equals(CloudEventAttributes.SpecVersionAttributeName(CloudEventsSpecVersion.V0_2), StringComparison.InvariantCultureIgnoreCase))
{
continue;
}
switch (keyValuePair.Value.Type)
{
case JTokenType.String:
attributes[keyValuePair.Key] = keyValuePair.Value.ToObject <string>();
break;
case JTokenType.Date:
attributes[keyValuePair.Key] = keyValuePair.Value.ToObject <DateTime>();
break;
case JTokenType.Uri:
attributes[keyValuePair.Key] = keyValuePair.Value.ToObject <Uri>();
break;
case JTokenType.Null:
attributes[keyValuePair.Key] = null;
break;
case JTokenType.Integer:
attributes[keyValuePair.Key] = keyValuePair.Value.ToObject <int>();
break;
default:
attributes[keyValuePair.Key] = (dynamic)keyValuePair.Value;
break;
}
}
return(cloudEvent);
}
void MapHeaders(CloudEvent cloudEvent)
{
foreach (var attribute in cloudEvent.GetAttributes())
{
if (!(attribute.Key.Equals(CloudEventAttributes.DataAttributeName(cloudEvent.SpecVersion)) ||
attribute.Key.Equals(CloudEventAttributes.DataContentTypeAttributeName(cloudEvent.SpecVersion))))
{
if (attribute.Value is string)
{
Headers.Add("ce-" + attribute.Key, WebUtility.UrlEncode(attribute.Value.ToString()));
}
else if (attribute.Value is DateTime)
{
Headers.Add("ce-" + attribute.Key, ((DateTime)attribute.Value).ToString("u"));
}
else if (attribute.Value is Uri || attribute.Value is int)
{
Headers.Add("ce-" + attribute.Key, attribute.Value.ToString());
}
else
{
Headers.Add("ce-" + attribute.Key,
WebUtility.UrlEncode(
Encoding.UTF8.GetString(jsonFormatter.EncodeAttribute(cloudEvent.SpecVersion, attribute.Key, attribute.Value,
cloudEvent.Extensions.Values))));
}
}
}
}
public byte[] EncodeStructuredEvent(CloudEvent cloudEvent, out ContentType contentType)
{
contentType = new ContentType("application/cloudevents+json")
{
CharSet = Encoding.UTF8.WebName
};
JObject jObject = new JObject();
var attributes = cloudEvent.GetAttributes();
foreach (var keyValuePair in attributes)
{
if (keyValuePair.Value == null)
{
continue;
}
if (keyValuePair.Value is ContentType && !string.IsNullOrEmpty(((ContentType)keyValuePair.Value).MediaType))
{
jObject[keyValuePair.Key] = JToken.FromObject(((ContentType)keyValuePair.Value).ToString());
}
else
{
jObject[keyValuePair.Key] = JToken.FromObject(keyValuePair.Value);
}
}
return(Encoding.UTF8.GetBytes(jObject.ToString()));
}
public byte[] EncodeStructuredEvent(CloudEvent cloudEvent, out ContentType contentType)
{
contentType = new ContentType(CloudEvent.MediaType + AvroEventFormatter.MediaTypeSuffix);
GenericRecord record = new GenericRecord(avroSchema);
var recordAttributes = new Dictionary <string, object>();
var attributes = cloudEvent.GetAttributes();
foreach (var keyValuePair in attributes)
{
if (keyValuePair.Value == null)
{
continue;
}
if (keyValuePair.Value is ContentType && !string.IsNullOrEmpty(((ContentType)keyValuePair.Value).MediaType))
{
recordAttributes[keyValuePair.Key] = ((ContentType)keyValuePair.Value).ToString();
}
else if (keyValuePair.Value is Uri)
{
recordAttributes[keyValuePair.Key] = ((Uri)keyValuePair.Value).ToString();
}
else if (keyValuePair.Value is DateTime)
{
recordAttributes[keyValuePair.Key] = ((DateTime)keyValuePair.Value).ToString("o");
}
else if (cloudEvent.SpecVersion == CloudEventsSpecVersion.V1_0 &&
keyValuePair.Key.Equals(CloudEventAttributes.DataAttributeName(cloudEvent.SpecVersion)))
{
if (keyValuePair.Value is Stream)
{
using (var sr = new BinaryReader((Stream)keyValuePair.Value))
{
record.Add("data", sr.ReadBytes((int)sr.BaseStream.Length));
}
}
else
{
record.Add("data", keyValuePair.Value);
}
}
else
{
recordAttributes[keyValuePair.Key] = keyValuePair.Value;
}
}
record.Add("attribute", recordAttributes);
MemoryStream memStream = new MemoryStream();
BinaryEncoder encoder = new BinaryEncoder(memStream);
avroWriter.Write(record, encoder);
return(new Span <byte>(memStream.GetBuffer(), 0, (int)memStream.Length).ToArray());
}
static void MapAttributesToWebRequest(CloudEvent cloudEvent, HttpWebRequest httpWebRequest)
{
foreach (var attribute in cloudEvent.GetAttributes())
{
if (!attribute.Key.Equals(CloudEventAttributes.DataAttributeName(cloudEvent.SpecVersion)) &&
!attribute.Key.Equals(CloudEventAttributes.DataContentTypeAttributeName(cloudEvent.SpecVersion)))
{
string headerValue = UrlEncodeAttributeAsHeaderValue(
attribute.Key, attribute.Value, cloudEvent.SpecVersion, cloudEvent.Extensions.Values);
httpWebRequest.Headers.Add(HttpHeaderPrefix + attribute.Key, headerValue);
}
}
}
public byte[] EncodeStructuredEvent(CloudEvent cloudEvent, out ContentType contentType)
{
contentType = new ContentType("application/cloudevents+json")
{
CharSet = Encoding.UTF8.WebName
};
JObject jObject = new JObject();
var attributes = cloudEvent.GetAttributes();
foreach (var keyValuePair in attributes)
{
if (keyValuePair.Value == null)
{
continue;
}
if (keyValuePair.Value is ContentType && !string.IsNullOrEmpty(((ContentType)keyValuePair.Value).MediaType))
{
jObject[keyValuePair.Key] = JToken.FromObject(((ContentType)keyValuePair.Value).ToString());
}
else if (cloudEvent.SpecVersion == CloudEventsSpecVersion.V1_0 &&
keyValuePair.Key.Equals(CloudEventAttributes.DataAttributeName(cloudEvent.SpecVersion)))
{
if (keyValuePair.Value is Stream)
{
using (var sr = new BinaryReader((Stream)keyValuePair.Value))
{
jObject["data_base64"] = Convert.ToBase64String(sr.ReadBytes((int)sr.BaseStream.Length));
}
}
else if (keyValuePair.Value is IEnumerable <byte> )
{
jObject["data_base64"] =
Convert.ToBase64String(((IEnumerable <byte>)keyValuePair.Value).ToArray());
}
else
{
jObject["data"] = JToken.FromObject(keyValuePair.Value);
}
}
else
{
jObject[keyValuePair.Key] = JToken.FromObject(keyValuePair.Value);
}
}
return(Encoding.UTF8.GetBytes(jObject.ToString()));
}
public CloudEvent DecodeGenericRecord(GenericRecord record, IEnumerable <ICloudEventExtension> extensions = null)
{
if (!record.TryGetValue("attribute", out var attrObj))
{
return(null);
}
IDictionary <string, object> recordAttributes = (IDictionary <string, object>)attrObj;
object data = null;
if (!record.TryGetValue("data", out data))
{
data = null;
}
CloudEventsSpecVersion specVersion = CloudEventsSpecVersion.Default;
var cloudEvent = new CloudEvent(specVersion, extensions);
cloudEvent.Data = data;
var attributes = cloudEvent.GetAttributes();
foreach (var keyValuePair in recordAttributes)
{
// skip the version since we set that above
if (keyValuePair.Key.Equals(CloudEventAttributes.SpecVersionAttributeName(CloudEventsSpecVersion.V0_1), StringComparison.InvariantCultureIgnoreCase) ||
keyValuePair.Key.Equals(CloudEventAttributes.SpecVersionAttributeName(CloudEventsSpecVersion.V0_2), StringComparison.InvariantCultureIgnoreCase) ||
keyValuePair.Key.Equals(CloudEventAttributes.SpecVersionAttributeName(CloudEventsSpecVersion.V1_0), StringComparison.InvariantCultureIgnoreCase))
{
continue;
}
if (keyValuePair.Key == CloudEventAttributes.SourceAttributeName(specVersion) ||
keyValuePair.Key == CloudEventAttributes.DataSchemaAttributeName(specVersion))
{
attributes[keyValuePair.Key] = new Uri((string)keyValuePair.Value);
}
else if (keyValuePair.Key == CloudEventAttributes.TimeAttributeName(specVersion))
{
attributes[keyValuePair.Key] = Timestamps.Parse((string)keyValuePair.Value);
}
else
{
attributes[keyValuePair.Key] = keyValuePair.Value;
}
}
return(cloudEvent);
}
public byte[] EncodeStructuredEvent(CloudEvent cloudEvent, out ContentType contentType)
{
contentType = new ContentType(CloudEvent.MediaType + AvroEventFormatter.MediaTypeSuffix);
GenericRecord record = new GenericRecord(avroSchema);
var recordAttributes = new Dictionary <string, object>();
var attributes = cloudEvent.GetAttributes();
foreach (var keyValuePair in attributes)
{
if (keyValuePair.Value == null)
{
continue;
}
if (keyValuePair.Value is ContentType valueContentType && !string.IsNullOrEmpty(valueContentType.MediaType))
{
recordAttributes[keyValuePair.Key] = valueContentType.ToString();
}
void MapHeaders(CloudEvent cloudEvent, bool includeDataContentType)
{
string specVersionAttributeName = CloudEventAttributes.DataAttributeName(cloudEvent.SpecVersion);
string dataContentTypeAttributeName = CloudEventAttributes.DataContentTypeAttributeName(cloudEvent.SpecVersion);
foreach (var attribute in cloudEvent.GetAttributes())
{
string key = attribute.Key;
string headerName = "ce-" + key;
object value = attribute.Value;
// Never map the spec attribute to a header
if (key == specVersionAttributeName)
{
continue;
}
// Only map the data content type attribute to a header if we've been asked to
else if (key == dataContentTypeAttributeName && !includeDataContentType)
{
continue;
}
else
{
string headerValue = attribute.Value switch
{
string text => WebUtility.UrlEncode(text),
ContentType contentType => contentType.ToString(),
DateTime dt => XmlConvert.ToString(dt, XmlDateTimeSerializationMode.Utc),
Uri uri => uri.ToString(),
int integer => integer.ToString(),
_ => WebUtility.UrlEncode(Encoding.UTF8.GetString(
jsonFormatter.EncodeAttribute(cloudEvent.SpecVersion, key, value, cloudEvent.Extensions.Values)))
};
Headers.Add(headerName, headerValue);
}
}
}
public async Task SetsTraceParentExtension(bool inclTraceparent, bool inclTracestate)
{
var mockTransport = new MockTransport(new MockResponse(200));
var options = new EventGridPublisherClientOptions
{
Transport = mockTransport
};
EventGridPublisherClient client =
new EventGridPublisherClient(
new Uri("http://localHost"),
new AzureKeyCredential("fakeKey"),
options);
var activity = new Activity($"{nameof(EventGridPublisherClient)}.{nameof(EventGridPublisherClient.SendEvents)}");
activity.SetW3CFormat();
activity.Start();
List <CloudEvent> eventsList = new List <CloudEvent>();
for (int i = 0; i < 10; i++)
{
var cloudEvent =
new CloudEvent(
"record",
new Uri("http://localHost"),
Guid.NewGuid().ToString(),
DateTime.Now);
if (inclTraceparent && inclTracestate && i % 2 == 0)
{
cloudEvent.GetAttributes().Add("traceparent", "traceparentValue");
}
if (inclTracestate && i % 2 == 0)
{
cloudEvent.GetAttributes().Add("tracestate", "param:value");
}
eventsList.Add(cloudEvent);
}
await client.SendCloudEventsAsync(eventsList);
activity.Stop();
List <CloudEvent> cloudEvents = DeserializeRequest(mockTransport.SingleRequest);
IEnumerator <CloudEvent> cloudEnum = eventsList.GetEnumerator();
foreach (CloudEvent cloudEvent in cloudEvents)
{
cloudEnum.MoveNext();
IDictionary <string, object> cloudEventAttr = cloudEnum.Current.GetAttributes();
if (cloudEventAttr.ContainsKey(TraceParentHeaderName) &&
cloudEventAttr.ContainsKey(TraceStateHeaderName))
{
Assert.AreEqual(
cloudEventAttr[TraceParentHeaderName],
cloudEvent.GetAttributes()[TraceParentHeaderName]);
Assert.AreEqual(
cloudEventAttr[TraceStateHeaderName],
cloudEvent.GetAttributes()[TraceStateHeaderName]);
}
else if (cloudEventAttr.ContainsKey(TraceParentHeaderName))
{
Assert.AreEqual(
cloudEventAttr[TraceParentHeaderName],
cloudEvent.GetAttributes()[TraceParentHeaderName]);
}
else if (cloudEventAttr.ContainsKey(TraceStateHeaderName))
{
Assert.AreEqual(
cloudEventAttr[TraceStateHeaderName],
cloudEvent.GetAttributes()[TraceStateHeaderName]);
}
else
{
Assert.AreEqual(
activity.Id,
cloudEvent.GetAttributes()[TraceParentHeaderName]);
}
}
}
static CloudEvent ToCloudEventInternal(HttpResponseMessage httpResponseMessage,
ICloudEventFormatter formatter, ICloudEventExtension[] extensions)
{
if (httpResponseMessage.Content?.Headers.ContentType != null &&
httpResponseMessage.Content.Headers.ContentType.MediaType.StartsWith("application/cloudevents",
StringComparison.InvariantCultureIgnoreCase))
{
// handle structured mode
if (formatter == null)
{
// if we didn't get a formatter, pick one
if (httpResponseMessage.Content.Headers.ContentType.MediaType.EndsWith("+json",
StringComparison.InvariantCultureIgnoreCase))
{
formatter = jsonFormatter;
}
else
{
throw new InvalidOperationException("Unsupported CloudEvents encoding");
}
}
return(formatter.DecodeStructuredEvent(
httpResponseMessage.Content.ReadAsByteArrayAsync().GetAwaiter().GetResult(),
extensions));
}
else
{
CloudEventsSpecVersion version = CloudEventsSpecVersion.Default;
if (httpResponseMessage.Headers.Contains(SpecVersionHttpHeader1))
{
version = CloudEventsSpecVersion.V0_1;
}
if (httpResponseMessage.Headers.Contains(SpecVersionHttpHeader2))
{
version = httpResponseMessage.Headers.GetValues(SpecVersionHttpHeader2).First() == "0.2"
? CloudEventsSpecVersion.V0_2 : httpResponseMessage.Headers.GetValues(SpecVersionHttpHeader2).First() == "0.3"
? CloudEventsSpecVersion.V0_3 : CloudEventsSpecVersion.Default;
}
var cloudEvent = new CloudEvent(version, extensions);
var attributes = cloudEvent.GetAttributes();
foreach (var httpResponseHeader in httpResponseMessage.Headers)
{
if (httpResponseHeader.Key.Equals(SpecVersionHttpHeader1,
StringComparison.InvariantCultureIgnoreCase) ||
httpResponseHeader.Key.Equals(SpecVersionHttpHeader2,
StringComparison.InvariantCultureIgnoreCase))
{
continue;
}
if (httpResponseHeader.Key.StartsWith(HttpHeaderPrefix,
StringComparison.InvariantCultureIgnoreCase))
{
string headerValue = httpResponseHeader.Value.First();
var name = httpResponseHeader.Key.Substring(3);
// abolished structures in headers in 1.0
if (version != CloudEventsSpecVersion.V1_0 && (headerValue.StartsWith("\"") && headerValue.EndsWith("\"") ||
headerValue.StartsWith("'") && headerValue.EndsWith("'") ||
headerValue.StartsWith("{") && headerValue.EndsWith("}") ||
headerValue.StartsWith("[") && headerValue.EndsWith("]")))
{
attributes[name] = jsonFormatter.DecodeAttribute(version, name,
Encoding.UTF8.GetBytes(headerValue), extensions);
}
else
{
attributes[name] = headerValue;
}
}
}
cloudEvent.DataContentType = httpResponseMessage.Content?.Headers.ContentType != null
? new ContentType(httpResponseMessage.Content.Headers.ContentType.ToString())
: null;
cloudEvent.Data = httpResponseMessage.Content?.ReadAsStreamAsync().GetAwaiter().GetResult();
return(cloudEvent);
}
}
/// <summary>
/// Converts this listener request into a CloudEvent object, with the given extensions,
/// overriding the formatter.
/// </summary>
/// <param name="httpListenerRequest">Listener request</param>
/// <param name="formatter"></param>
/// <param name="extensions">List of extension instances</param>
/// <returns>A CloudEvent instance or 'null' if the request message doesn't hold a CloudEvent</returns>
public static CloudEvent ToCloudEvent(this HttpRequestMessage httpListenerRequest,
ICloudEventFormatter formatter = null,
params ICloudEventExtension[] extensions)
{
if (httpListenerRequest.Content != null && httpListenerRequest.Content.Headers.ContentType != null &&
httpListenerRequest.Content.Headers.ContentType.MediaType.StartsWith(CloudEvent.MediaType,
StringComparison.InvariantCultureIgnoreCase))
{
// handle structured mode
if (formatter == null)
{
// if we didn't get a formatter, pick one
if (httpListenerRequest.Content.Headers.ContentType.MediaType.EndsWith(
JsonEventFormatter.MediaTypeSuffix,
StringComparison.InvariantCultureIgnoreCase))
{
formatter = jsonFormatter;
}
else
{
throw new InvalidOperationException("Unsupported CloudEvents encoding");
}
}
return(formatter.DecodeStructuredEvent(
httpListenerRequest.Content.ReadAsStreamAsync().GetAwaiter().GetResult(), extensions));
}
else
{
CloudEventsSpecVersion version = CloudEventsSpecVersion.Default;
if (httpListenerRequest.Headers.Contains(SpecVersionHttpHeader1))
{
version = CloudEventsSpecVersion.V0_1;
}
if (httpListenerRequest.Headers.Contains(SpecVersionHttpHeader2))
{
version = httpListenerRequest.Headers.GetValues(SpecVersionHttpHeader2).First() == "0.2"
? CloudEventsSpecVersion.V0_2
: CloudEventsSpecVersion.Default;
}
var cloudEvent = new CloudEvent(version, extensions);
var attributes = cloudEvent.GetAttributes();
foreach (var httpRequestHeaders in httpListenerRequest.Headers)
{
if (httpRequestHeaders.Key.Equals(SpecVersionHttpHeader1,
StringComparison.InvariantCultureIgnoreCase) ||
httpRequestHeaders.Key.Equals(SpecVersionHttpHeader2,
StringComparison.InvariantCultureIgnoreCase))
{
continue;
}
if (httpRequestHeaders.Key.StartsWith(HttpHeaderPrefix,
StringComparison.InvariantCultureIgnoreCase))
{
string headerValue = httpListenerRequest.Headers.GetValues(httpRequestHeaders.Key).First();
// maps in headers have been abolished in version 1.0
if (version != CloudEventsSpecVersion.V1_0 &&
(headerValue.StartsWith("{") && headerValue.EndsWith("}") ||
headerValue.StartsWith("[") && headerValue.EndsWith("]")))
{
attributes[httpRequestHeaders.Key.Substring(3)] =
JsonConvert.DeserializeObject(headerValue);
}
else
{
attributes[httpRequestHeaders.Key.Substring(3)] = headerValue;
}
}
}
cloudEvent.DataContentType = httpListenerRequest.Content?.Headers.ContentType != null
? new ContentType(httpListenerRequest.Content.Headers.ContentType.MediaType)
: null;
cloudEvent.Data = httpListenerRequest.Content?.ReadAsStreamAsync().GetAwaiter().GetResult();
return(cloudEvent);
}
}
/// <summary>
/// Converts this listener request into a CloudEvent object, with the given extensions,
/// overriding the formatter.
/// </summary>
/// <param name="httpListenerRequest">Listener request</param>
/// <param name="formatter"></param>
/// <param name="extensions">List of extension instances</param>
/// <returns>A CloudEvent instance or 'null' if the response message doesn't hold a CloudEvent</returns>
public static CloudEvent ToCloudEvent(this HttpListenerRequest httpListenerRequest,
ICloudEventFormatter formatter = null,
params ICloudEventExtension[] extensions)
{
if (httpListenerRequest.ContentType != null &&
httpListenerRequest.ContentType.StartsWith(CloudEvent.MediaType,
StringComparison.InvariantCultureIgnoreCase))
{
// handle structured mode
if (formatter == null)
{
// if we didn't get a formatter, pick one
if (httpListenerRequest.ContentType.EndsWith(JsonEventFormatter.MediaTypeSuffix,
StringComparison.InvariantCultureIgnoreCase))
{
formatter = jsonFormatter;
}
else
{
throw new InvalidOperationException("Unsupported CloudEvents encoding");
}
}
return(formatter.DecodeStructuredEvent(httpListenerRequest.InputStream, extensions));
}
else
{
CloudEventsSpecVersion version = CloudEventsSpecVersion.Default;
if (httpListenerRequest.Headers[SpecVersionHttpHeader1] != null)
{
version = CloudEventsSpecVersion.V0_1;
}
if (httpListenerRequest.Headers[SpecVersionHttpHeader2] != null)
{
version = httpListenerRequest.Headers[SpecVersionHttpHeader2] == "0.2"
? CloudEventsSpecVersion.V0_2 : httpListenerRequest.Headers[SpecVersionHttpHeader2] == "0.3"
? CloudEventsSpecVersion.V0_3 : CloudEventsSpecVersion.Default;
}
var cloudEvent = new CloudEvent(version, extensions);
var attributes = cloudEvent.GetAttributes();
foreach (var httpRequestHeaders in httpListenerRequest.Headers.AllKeys)
{
if (httpRequestHeaders.Equals(SpecVersionHttpHeader1,
StringComparison.InvariantCultureIgnoreCase) ||
httpRequestHeaders.Equals(SpecVersionHttpHeader2, StringComparison.InvariantCultureIgnoreCase))
{
continue;
}
if (httpRequestHeaders.StartsWith(HttpHeaderPrefix, StringComparison.InvariantCultureIgnoreCase))
{
string headerValue = httpListenerRequest.Headers[httpRequestHeaders];
if (headerValue.StartsWith("{") && headerValue.EndsWith("}") ||
headerValue.StartsWith("[") && headerValue.EndsWith("]"))
{
attributes[httpRequestHeaders.Substring(3)] =
JsonConvert.DeserializeObject(headerValue);
}
else
{
attributes[httpRequestHeaders.Substring(3)] = headerValue;
attributes[httpRequestHeaders.Substring(3)] = headerValue;
}
}
}
cloudEvent.DataContentType = httpListenerRequest.ContentType != null
? new ContentType(httpListenerRequest.ContentType)
: null;
cloudEvent.Data = httpListenerRequest.InputStream;
return(cloudEvent);
}
}
public CloudEvent DecodeJObject(JObject jObject, IEnumerable <ICloudEventExtension> extensions = null)
{
CloudEventsSpecVersion specVersion = CloudEventsSpecVersion.Default;
if (jObject.ContainsKey(CloudEventAttributes.SpecVersionAttributeName(CloudEventsSpecVersion.V0_1)) ||
jObject.ContainsKey(CloudEventAttributes.SpecVersionAttributeName(CloudEventsSpecVersion.V0_1).ToLowerInvariant()))
{
specVersion = CloudEventsSpecVersion.V0_1;
}
if (jObject.ContainsKey(CloudEventAttributes.SpecVersionAttributeName(CloudEventsSpecVersion.V0_2)) ||
jObject.ContainsKey(CloudEventAttributes.SpecVersionAttributeName(CloudEventsSpecVersion.V0_2).ToLowerInvariant()))
{
specVersion =
((string)jObject[CloudEventAttributes.SpecVersionAttributeName(CloudEventsSpecVersion.V0_2)] ==
"0.2")
? CloudEventsSpecVersion.V0_2 :
((string)jObject[CloudEventAttributes.SpecVersionAttributeName(CloudEventsSpecVersion.V0_3)] ==
"0.3")
? CloudEventsSpecVersion.V0_3 : CloudEventsSpecVersion.Default;
}
var cloudEvent = new CloudEvent(specVersion, extensions);
var attributes = cloudEvent.GetAttributes();
foreach (var keyValuePair in jObject)
{
// skip the version since we set that above
if (keyValuePair.Key.Equals(CloudEventAttributes.SpecVersionAttributeName(CloudEventsSpecVersion.V0_1), StringComparison.InvariantCultureIgnoreCase) ||
keyValuePair.Key.Equals(CloudEventAttributes.SpecVersionAttributeName(CloudEventsSpecVersion.V0_2), StringComparison.InvariantCultureIgnoreCase) ||
keyValuePair.Key.Equals(CloudEventAttributes.SpecVersionAttributeName(CloudEventsSpecVersion.V1_0), StringComparison.InvariantCultureIgnoreCase))
{
continue;
}
if (specVersion == CloudEventsSpecVersion.V1_0)
{
// handle base64 encoded binaries
if (keyValuePair.Key.Equals("data_base64"))
{
attributes["data"] = Convert.FromBase64String(keyValuePair.Value.ToString());
continue;
}
}
switch (keyValuePair.Value.Type)
{
case JTokenType.String:
attributes[keyValuePair.Key] = keyValuePair.Value.ToObject <string>();
break;
case JTokenType.Date:
attributes[keyValuePair.Key] = keyValuePair.Value.ToObject <DateTime>();
break;
case JTokenType.Uri:
attributes[keyValuePair.Key] = keyValuePair.Value.ToObject <Uri>();
break;
case JTokenType.Null:
attributes[keyValuePair.Key] = null;
break;
case JTokenType.Integer:
attributes[keyValuePair.Key] = keyValuePair.Value.ToObject <int>();
break;
default:
attributes[keyValuePair.Key] = (dynamic)keyValuePair.Value;
break;
}
}
return(cloudEvent);
}
/// <summary>
/// Converts this HTTP request into a CloudEvent object, with the given extensions,
/// overriding the formatter.
/// </summary>
/// <param name="httpRequest">HTTP request</param>
/// <param name="formatter"></param>
/// <param name="extensions">List of extension instances</param>
/// <returns>A CloudEvent instance or 'null' if the request message doesn't hold a CloudEvent</returns>
public static async ValueTask <CloudEvent> ReadCloudEventAsync(this HttpRequest httpRequest,
ICloudEventFormatter formatter = null,
params ICloudEventExtension[] extensions)
{
if (httpRequest.ContentType != null &&
httpRequest.ContentType.StartsWith(CloudEvent.MediaType,
StringComparison.InvariantCultureIgnoreCase))
{
// handle structured mode
if (formatter == null)
{
// if we didn't get a formatter, pick one
var contentType = httpRequest.ContentType.Split(';')[0].Trim();
if (contentType.EndsWith(JsonEventFormatter.MediaTypeSuffix,
StringComparison.InvariantCultureIgnoreCase))
{
formatter = jsonFormatter;
}
else
{
throw new InvalidOperationException("Unsupported CloudEvents encoding");
}
}
return(await formatter.DecodeStructuredEventAsync(httpRequest.Body, extensions));
}
else
{
CloudEventsSpecVersion version = CloudEventsSpecVersion.Default;
if (httpRequest.Headers[SpecVersionHttpHeader1] != StringValues.Empty)
{
version = CloudEventsSpecVersion.V0_1;
}
if (httpRequest.Headers[SpecVersionHttpHeader2] != StringValues.Empty)
{
switch (httpRequest.Headers[SpecVersionHttpHeader2])
{
case "0.2":
version = CloudEventsSpecVersion.V0_2;
break;
case "0.3":
version = CloudEventsSpecVersion.V0_3;
break;
default:
version = CloudEventsSpecVersion.Default;
break;
}
}
var cloudEvent = new CloudEvent(version, extensions);
var attributes = cloudEvent.GetAttributes();
foreach (var httpRequestHeader in httpRequest.Headers.Keys)
{
if (httpRequestHeader.Equals(SpecVersionHttpHeader1,
StringComparison.InvariantCultureIgnoreCase) ||
httpRequestHeader.Equals(SpecVersionHttpHeader2, StringComparison.InvariantCultureIgnoreCase))
{
continue;
}
if (httpRequestHeader.StartsWith(HttpHeaderPrefix, StringComparison.InvariantCultureIgnoreCase))
{
string headerValue = WebUtility.UrlDecode(httpRequest.Headers[httpRequestHeader]);
// maps in headers have been abolished in 1.0
if (version != CloudEventsSpecVersion.V1_0 &&
headerValue.StartsWith("{") && headerValue.EndsWith("}") ||
headerValue.StartsWith("[") && headerValue.EndsWith("]"))
{
attributes[httpRequestHeader.Substring(3)] =
JsonConvert.DeserializeObject(headerValue);
}
else
{
attributes[httpRequestHeader.Substring(3)] = headerValue;
}
}
}
cloudEvent.DataContentType = httpRequest.ContentType != null
? new ContentType(httpRequest.ContentType)
: null;
cloudEvent.Data = await new StreamReader(httpRequest.Body, Encoding.UTF8).ReadToEndAsync();
return(cloudEvent);
}
}
