public static IBizMessage CreateBizMessageFromStream(Stream stream)
{
IList <KeyValuePair <string, string> > headerList;
MemoryStream bodyStream = null;
try
{
bodyStream = StreamHelper.DeserializeStreamToHeadersAndBody(stream, out headerList);
}
catch (ArgumentOutOfRangeException)
{
return(null);
}
IBizMessage message = CreateBizMessage();
message.Payload = Encoding.UTF8.GetString(bodyStream.GetBuffer(), (int)bodyStream.Position, (int)bodyStream.Length - (int)bodyStream.Position);
int prevIndex = -1;
int currentIndex;
BizMessageAction currentAction = new BizMessageAction();
foreach (KeyValuePair <string, string> keyValuePair in headerList)
{
string key = keyValuePair.Key;
if (string.Compare(key, BizMessageType, StringComparison.OrdinalIgnoreCase) == 0)
{
message.Type = (BizMessageType)Enum.Parse(typeof(BizMessageType), keyValuePair.Value, true);
}
else if (string.Compare(key, BizUniqueId, StringComparison.OrdinalIgnoreCase) == 0)
{
message.UniqueId = keyValuePair.Value;
}
else if (string.Compare(key, BizCreatedTime, StringComparison.OrdinalIgnoreCase) == 0)
{
DateTime createdTime;
DateTime.TryParse(keyValuePair.Value, out createdTime);
message.CreatedTime = createdTime;
}
//now you are reading a list field
else if ((currentIndex = key.IndexOf(IndexSeperator)) > 0)
{
//read the list till you have the same index
string fieldName = key.Substring(0, currentIndex);
currentIndex = int.Parse(key.Substring(currentIndex + 1));
if (prevIndex != currentIndex)
{
//create a new action
currentAction = new BizMessageAction();
message.Actions.Add(currentAction);
}
if (string.Compare(fieldName, PayloadSection, StringComparison.OrdinalIgnoreCase) == 0)
{
currentAction.PayloadSection = keyValuePair.Value;
}
else if (string.Compare(fieldName, Description, StringComparison.OrdinalIgnoreCase) == 0)
{
currentAction.Description = keyValuePair.Value;
}
else if (string.Compare(fieldName, Status, StringComparison.OrdinalIgnoreCase) == 0)
{
currentAction.Status = (MessageActionStatus)Enum.Parse(typeof(MessageActionStatus), keyValuePair.Value, true);
}
else if (string.Compare(fieldName, CreatedTime, StringComparison.OrdinalIgnoreCase) == 0)
{
currentAction.CreatedTime = DateTime.Parse(keyValuePair.Value);
}
else if (string.Compare(fieldName, LastUpdateTime, StringComparison.OrdinalIgnoreCase) == 0)
{
currentAction.LastUpdateTime = DateTime.Parse(keyValuePair.Value);
}
prevIndex = currentIndex;
}
}
// old message may not have unique id and created time, so need to assign them with something
if (string.IsNullOrEmpty(message.UniqueId))
{
message.UniqueId = Guid.NewGuid().ToString();
}
if (message.CreatedTime == DateTime.MinValue)
{
message.CreatedTime = DateTime.Now;
}
return(message);
}