public ContinuationAction MessageReceived(ListenerContext e)
{
// You can inherit from MessageExtendedInformation if you wish,
// the likely scenario for this is if you support plugins yourself.
var extended = e.ReceivedInformation.Message.GetExtendedInformation<MessageExtendedInformation>();
var replyExtended = extended.Invert(null);
string workflowName;
if (extended.Message.Title.StartsWith("START: ", StringComparison.OrdinalIgnoreCase))
{
workflowName = extended.Message.Title.Substring(7).Trim();
}
else
{
return ContinuationAction.Continue; // Allow other plugins to execute.
}
// Get the message body.
string body;
try
{
using (var bodyStream = e.ReceivedInformation.Message.OpenView(new ContentType("text/plain")))
{
if (bodyStream != null)
{
// Another plugin may have moved the position within the stream.
bodyStream.Seek(0, System.IO.SeekOrigin.Begin);
using (var sr = new StreamReader(bodyStream))
{
body = sr.ReadToEnd().Trim();
}
}
else
{
body = string.Empty;
}
}
}
catch
{
// TODO: Logging etc.
return ContinuationAction.Continue; // Allow other plugins to execute.
}
// TODO: Get data from the body somehow.
// You can also look into attachments for e.g. InfoPath forms:
// e.ReceivedInformation.Message.Attachments
try
{
var con = new Connection();
var cs = new ConnectionSetup();
cs.ParseConnectionString(_k2ServerConnectionString);
try
{
Exception lastException = null;
con.Open(cs);
// AlternateIdentities are identities with the same email
// address, most likely due badly configured claims.
for (var i = 0; i < e.AlternateIdentities.Length; i++)
{
var alt = e.AlternateIdentities[i];
string fqn;
// Search for a FQN in the identity.
if (alt.TryGetValue("Fqn", out fqn))
{
try
{
con.RevertUser();
con.ImpersonateUser(fqn);
var pi = con.CreateProcessInstance(workflowName);
// TODO: Set data in the workflow.
con.StartProcessInstance(pi);
// Tell the user the workflow was started.
_destination.ReplyTo(e.ReceivedInformation.Message, new MessageBodyReader("text/plain", "Workflow started"), replyExtended);
e.ReceivedInformation.Commit(); // Indicate we were able to handle the message.
return ContinuationAction.Halt; // Stop other plugins from executing.
}
catch (Exception ex)
{
// TODO: Logging etc.
// This isn't nessecarily a complete failure,
// one of the other alternate identities may be
// able to action this.
lastException = ex;
}
}
}
string message;
if (lastException != null)
{
// Identities exist, but the user likely doesn't have rights.
message = lastException.ToString();
}
else
{
// No identities exist.
message = "Could not find a K2 user for your email address.";
}
message = "The workflow could not be started: " + message;
// Respond with the error.
_destination.ReplyTo(e.ReceivedInformation.Message, new MessageBodyReader("text/plain", message), replyExtended);
e.ReceivedInformation.Commit(); // Indicate we were able to handle the message.
return ContinuationAction.Halt; // Stop other plugins from executing.
}
finally
{
if (con != null)
{
con.Close();
con.Dispose();
}
}
}
catch
{
// TODO: Logging etc.
return ContinuationAction.Continue; // Allow other plugins to execute.
}
}
