/// <summary>
/// Builds an <see cref="EventData" /> from an <see cref="AmqpMessage" />.
/// </summary>
///
/// <param name="source">The message to use as the source of the event.</param>
///
/// <returns>The <see cref="EventData" /> constructed from the source message.</returns>
///
private static EventData BuildEventFromAmqpMessage(AmqpMessage source)
{
ReadOnlyMemory <byte> body = (source.BodyType.HasFlag(SectionFlag.Data))
? ReadStreamToMemory(source.BodyStream)
: ReadOnlyMemory <byte> .Empty;
ParsedAnnotations systemAnnotations = ParseSystemAnnotations(source);
// If there were application properties associated with the message, translate them
// to the event.
var properties = default(Dictionary <string, object>);
if (source.Sections.HasFlag(SectionFlag.ApplicationProperties))
{
properties = new Dictionary <string, object>();
foreach (KeyValuePair <MapKey, object> pair in source.ApplicationProperties.Map)
{
if (TryCreateEventPropertyForAmqpProperty(pair.Value, out object propertyValue))
{
properties[pair.Key.ToString()] = propertyValue;
}
}
}
return(new EventData(
eventBody: body,
properties: properties,
systemProperties: systemAnnotations.ServiceAnnotations,
sequenceNumber: systemAnnotations.SequenceNumber ?? long.MinValue,
offset: systemAnnotations.Offset ?? long.MinValue,
enqueuedTime: systemAnnotations.EnqueuedTime ?? default,
partitionKey: systemAnnotations.PartitionKey,
lastPartitionSequenceNumber: systemAnnotations.LastSequenceNumber,
lastPartitionOffset: systemAnnotations.LastOffset,
lastPartitionEnqueuedTime: systemAnnotations.LastEnqueuedTime,
lastPartitionPropertiesRetrievalTime: systemAnnotations.LastReceivedTime));
}
/// <summary>
/// Parses the annotations set by the Event Hubs service on the <see cref="AmqpMessage"/>
/// associated with an event, extracting them into a consumable form.
/// </summary>
///
/// <param name="source">The message to use as the source of the event.</param>
///
/// <returns>The <see cref="ParsedAnnotations" /> parsed from the source message.</returns>
///
private static ParsedAnnotations ParseSystemAnnotations(AmqpMessage source)
{
var systemProperties = new ParsedAnnotations
{
ServiceAnnotations = new Dictionary <string, object>()
};
object amqpValue;
object propertyValue;
// Process the message annotations.
if (source.Sections.HasFlag(SectionFlag.MessageAnnotations))
{
Annotations annotations = source.MessageAnnotations.Map;
var processed = new HashSet <string>();
if ((annotations.TryGetValue(AmqpProperty.EnqueuedTime, out amqpValue)) &&
(TryCreateEventPropertyForAmqpProperty(amqpValue, out propertyValue)))
{
systemProperties.EnqueuedTime = propertyValue switch
{
DateTime dateValue => new DateTimeOffset(dateValue, TimeSpan.Zero),
long longValue => new DateTimeOffset(longValue, TimeSpan.Zero),
_ => (DateTimeOffset)propertyValue
};
processed.Add(AmqpProperty.EnqueuedTime.ToString());
}
if ((annotations.TryGetValue(AmqpProperty.SequenceNumber, out amqpValue)) &&
(TryCreateEventPropertyForAmqpProperty(amqpValue, out propertyValue)))
{
systemProperties.SequenceNumber = (long)propertyValue;
processed.Add(AmqpProperty.SequenceNumber.ToString());
}
if ((annotations.TryGetValue(AmqpProperty.Offset, out amqpValue)) &&
(TryCreateEventPropertyForAmqpProperty(amqpValue, out propertyValue)) &&
(long.TryParse((string)propertyValue, out var offset)))
{
systemProperties.Offset = offset;
processed.Add(AmqpProperty.Offset.ToString());
}
if ((annotations.TryGetValue(AmqpProperty.PartitionKey, out amqpValue)) &&
(TryCreateEventPropertyForAmqpProperty(amqpValue, out propertyValue)))
{
systemProperties.PartitionKey = (string)propertyValue;
processed.Add(AmqpProperty.PartitionKey.ToString());
}
string key;
foreach (KeyValuePair <MapKey, object> pair in annotations)
{
key = pair.Key.ToString();
if ((!processed.Contains(key)) &&
(TryCreateEventPropertyForAmqpProperty(pair.Value, out propertyValue)))
{
systemProperties.ServiceAnnotations.Add(key, propertyValue);
processed.Add(key);
}
}
}
// Process the delivery annotations.
if (source.Sections.HasFlag(SectionFlag.DeliveryAnnotations))
{
if ((source.DeliveryAnnotations.Map.TryGetValue(AmqpProperty.PartitionLastEnqueuedTimeUtc, out amqpValue)) &&
(TryCreateEventPropertyForAmqpProperty(amqpValue, out propertyValue)))
{
systemProperties.LastEnqueuedTime = propertyValue switch
{
DateTime dateValue => new DateTimeOffset(dateValue, TimeSpan.Zero),
long longValue => new DateTimeOffset(longValue, TimeSpan.Zero),
_ => (DateTimeOffset)propertyValue
};
}
if ((source.DeliveryAnnotations.Map.TryGetValue(AmqpProperty.PartitionLastEnqueuedSequenceNumber, out amqpValue)) &&
(TryCreateEventPropertyForAmqpProperty(amqpValue, out propertyValue)))
{
systemProperties.LastSequenceNumber = (long)propertyValue;
}
if ((source.DeliveryAnnotations.Map.TryGetValue(AmqpProperty.PartitionLastEnqueuedOffset, out amqpValue)) &&
(TryCreateEventPropertyForAmqpProperty(amqpValue, out propertyValue)) &&
(long.TryParse((string)propertyValue, out var offset)))
{
systemProperties.LastOffset = offset;
}
if ((source.DeliveryAnnotations.Map.TryGetValue(AmqpProperty.LastPartitionInformationRetrievalTimeUtc, out amqpValue)) &&
(TryCreateEventPropertyForAmqpProperty(amqpValue, out propertyValue)))
{
systemProperties.LastReceivedTime = propertyValue switch
{
DateTime dateValue => new DateTimeOffset(dateValue, TimeSpan.Zero),
long longValue => new DateTimeOffset(longValue, TimeSpan.Zero),
_ => (DateTimeOffset)propertyValue
};
}
}
// Process the properties annotations
if (source.Sections.HasFlag(SectionFlag.Properties))
{
Properties properties = source.Properties;
void conditionalAdd(string name, object value, bool condition)
{
if (condition)
{
systemProperties.ServiceAnnotations.Add(name, value);
}
}
conditionalAdd(Properties.MessageIdName, properties.MessageId, properties.MessageId != null);
conditionalAdd(Properties.UserIdName, properties.UserId, properties.UserId.Array != null);
conditionalAdd(Properties.ToName, properties.To, properties.To != null);
conditionalAdd(Properties.SubjectName, properties.Subject, properties.Subject != null);
conditionalAdd(Properties.ReplyToName, properties.ReplyTo, properties.ReplyTo != null);
conditionalAdd(Properties.CorrelationIdName, properties.CorrelationId, properties.CorrelationId != null);
conditionalAdd(Properties.ContentTypeName, properties.ContentType, properties.ContentType.Value != null);
conditionalAdd(Properties.ContentEncodingName, properties.ContentEncoding, properties.ContentEncoding.Value != null);
conditionalAdd(Properties.AbsoluteExpiryTimeName, properties.AbsoluteExpiryTime, properties.AbsoluteExpiryTime != null);
conditionalAdd(Properties.CreationTimeName, properties.CreationTime, properties.CreationTime != null);
conditionalAdd(Properties.GroupIdName, properties.GroupId, properties.GroupId != null);
conditionalAdd(Properties.GroupSequenceName, properties.GroupSequence, properties.GroupSequence != null);
conditionalAdd(Properties.ReplyToGroupIdName, properties.ReplyToGroupId, properties.ReplyToGroupId != null);
}
return(systemProperties);
}
/// <summary>
/// Parses the annotations set by the Event Hubs service on the <see cref="AmqpMessage"/>
/// associated with an event, extracting them into a consumable form.
/// </summary>
///
/// <param name="source">The message to use as the source of the event.</param>
///
/// <returns>The <see cref="ParsedAnnotations" /> parsed from the source message.</returns>
///
private static ParsedAnnotations ParseSystemAnnotations(AmqpMessage source)
{
var systemProperties = new ParsedAnnotations();
systemProperties.ServiceAnnotations = new Dictionary <string, object>();
object amqpValue;
object propertyValue;
// Process the message annotations.
if (source.Sections.HasFlag(SectionFlag.MessageAnnotations))
{
var annotations = source.MessageAnnotations.Map;
var processed = new HashSet <string>();
if ((annotations.TryGetValue(AmqpProperty.EnqueuedTime, out amqpValue)) &&
(TryCreateEventPropertyForAmqpProperty(amqpValue, out propertyValue)))
{
systemProperties.EnqueuedTime = (DateTimeOffset)propertyValue;
processed.Add(AmqpProperty.EnqueuedTime.ToString());
}
if ((annotations.TryGetValue(AmqpProperty.SequenceNumber, out amqpValue)) &&
(TryCreateEventPropertyForAmqpProperty(amqpValue, out propertyValue)))
{
systemProperties.SequenceNumber = (long)propertyValue;
processed.Add(AmqpProperty.SequenceNumber.ToString());
}
if ((annotations.TryGetValue(AmqpProperty.Offset, out amqpValue)) &&
(TryCreateEventPropertyForAmqpProperty(amqpValue, out propertyValue)) &&
(Int64.TryParse((string)propertyValue, out var offset)))
{
systemProperties.Offset = offset;
processed.Add(AmqpProperty.Offset.ToString());
}
if ((annotations.TryGetValue(AmqpProperty.PartitionKey, out amqpValue)) &&
(TryCreateEventPropertyForAmqpProperty(amqpValue, out propertyValue)))
{
systemProperties.PartitionKey = (string)propertyValue;
processed.Add(AmqpProperty.PartitionKey.ToString());
}
string key;
foreach (var pair in annotations)
{
key = pair.Key.ToString();
if ((!processed.Contains(key)) &&
(TryCreateEventPropertyForAmqpProperty(pair.Value, out propertyValue)))
{
systemProperties.ServiceAnnotations.Add(key, propertyValue);
processed.Add(key);
}
}
}
// Process the properties annotations
if (source.Sections.HasFlag(SectionFlag.Properties))
{
var properties = source.Properties;
void conditionalAdd(string name, object value, bool condition)
{
if (condition)
{
systemProperties.ServiceAnnotations.Add(name, value);
}
}
conditionalAdd(Properties.MessageIdName, properties.MessageId, properties.MessageId != null);
conditionalAdd(Properties.UserIdName, properties.UserId, properties.UserId.Array != null);
conditionalAdd(Properties.ToName, properties.To, properties.To != null);
conditionalAdd(Properties.SubjectName, properties.Subject, properties.Subject != null);
conditionalAdd(Properties.ReplyToName, properties.ReplyTo, properties.ReplyTo != null);
conditionalAdd(Properties.CorrelationIdName, properties.CorrelationId, properties.CorrelationId != null);
conditionalAdd(Properties.ContentTypeName, properties.ContentType, properties.ContentType.Value != null);
conditionalAdd(Properties.ContentEncodingName, properties.ContentEncoding, properties.ContentEncoding.Value != null);
conditionalAdd(Properties.AbsoluteExpiryTimeName, properties.AbsoluteExpiryTime, properties.AbsoluteExpiryTime != null);
conditionalAdd(Properties.CreationTimeName, properties.CreationTime, properties.CreationTime != null);
conditionalAdd(Properties.GroupIdName, properties.GroupId, properties.GroupId != null);
conditionalAdd(Properties.GroupSequenceName, properties.GroupSequence, properties.GroupSequence != null);
conditionalAdd(Properties.ReplyToGroupIdName, properties.ReplyToGroupId, properties.ReplyToGroupId != null);
}
return(systemProperties);
}
