private static async Task <XmlDocument> RetrieveSmpMetaDataAsync(
IDynamicDiscoveryProfile profile,
DynamicDiscoveryConfiguration dynamicDiscovery,
AS4Party toParty)
{
if (dynamicDiscovery == null)
{
throw new ConfigurationErrorsException(
@"Cannot retrieve SMP metadata: SendingPMode requires a <DynamicDiscovery/> element");
}
Dictionary <string, string> customProperties =
(dynamicDiscovery.Settings ?? new DynamicDiscoverySetting[0])
?.ToDictionary(s => s?.Key, s => s?.Value);
return(await profile.RetrieveSmpMetaDataAsync(
party : toParty,
properties : customProperties));
}
private static async Task <DynamicDiscoveryResult> DynamicDiscoverSendingPModeAsync(
SendingProcessingMode sendingPMode,
IDynamicDiscoveryProfile profile,
AS4Party toParty)
{
try
{
var clonedPMode = (SendingProcessingMode)sendingPMode.Clone();
clonedPMode.Id = $"{clonedPMode.Id}_SMP";
XmlDocument smpMetaData = await RetrieveSmpMetaDataAsync(profile, clonedPMode.DynamicDiscovery, toParty);
if (smpMetaData == null)
{
Logger.Error($"No SMP meta-data document was retrieved by the Dynamic Discovery profile: {profile.GetType().Name}");
throw new InvalidDataException(
"No SMP meta-data document was retrieved during the Dynamic Discovery process");
}
DynamicDiscoveryResult result = profile.DecoratePModeWithSmpMetaData(clonedPMode, smpMetaData);
if (result == null)
{
Logger.Error($@"No decorated SendingPMode was returned by the Dynamic Discovery profile: {profile.GetType().Name}");
throw new InvalidDataException(
"No decorated SendingPMode was returned during the Dynamic Discovery");
}
ValidatePMode(result.CompletedSendingPMode);
return(result);
}
catch (Exception ex)
{
Logger.Error(
$"An exception occured during the Dynamic Discovery process of the profile: {profile.GetType().Name} "
+ $"with the message having ToParty={toParty} for SendingPMode {sendingPMode.Id}");
throw new DynamicDiscoveryException(
"An exception occured during the Dynamic Discovery process", ex);
}
}
/// <summary>
/// Execute the step for a given <paramref name="messagingContext"/>.
/// </summary>
/// <param name="messagingContext">Message used during the step execution.</param>
/// <returns></returns>
public async Task <StepResult> ExecuteAsync(MessagingContext messagingContext)
{
if (messagingContext == null)
{
throw new ArgumentNullException(nameof(messagingContext));
}
if (messagingContext.AS4Message == null &&
messagingContext.Mode == MessagingContextMode.Forward)
{
Logger.Error(
$"{nameof(DynamicDiscoveryStep)} requires an AS4Message when used in a Forward Agent, "
+ "please make sure that the ReceivedMessage is deserialized before executing this step."
+ $"{Environment.NewLine} Possibly this failure happened because the Transformer of the Forward Agent is still using "
+ "the ForwardMessageTransformer instead of the AS4MessageTransformer");
throw new InvalidOperationException(
"Dynamic Discovery process cannot be used in a Forwarding scenario for messages that are not AS4Messages");
}
if (messagingContext.SendingPMode == null ||
messagingContext.SendingPMode.DynamicDiscoverySpecified == false)
{
Logger.Trace($"Skip Dynamic Discovery because SendingPMode {messagingContext.SendingPMode?.Id} is not configured for Dynamic Discovery");
return(StepResult.Success(messagingContext));
}
var clonedPMode = (SendingProcessingMode)messagingContext.SendingPMode.Clone();
clonedPMode.Id = $"{clonedPMode.Id}_SMP";
string smpProfile = messagingContext.SendingPMode.DynamicDiscovery.SmpProfile;
IDynamicDiscoveryProfile profile = _resolveDynamicDiscoveryProfile(smpProfile);
Logger.Info($"{messagingContext.LogTag} DynamicDiscovery is enabled in SendingPMode - using {profile.GetType().Name}");
AS4Party toParty =
messagingContext.Mode == MessagingContextMode.Forward
? ResolveAS4ReceiverParty(messagingContext.AS4Message)
: ResolveSubmitOrPModeReceiverParty(
messagingContext.SubmitMessage?.PartyInfo?.ToParty,
messagingContext.SendingPMode?.MessagePackaging?.PartyInfo?.ToParty,
messagingContext.SendingPMode?.AllowOverride == true);
DynamicDiscoveryResult result = await DynamicDiscoverSendingPModeAsync(messagingContext.SendingPMode, profile, toParty);
Logger.Debug($"SendingPMode {result.CompletedSendingPMode.Id} completed with SMP metadata");
messagingContext.SendingPMode = result.CompletedSendingPMode;
if (messagingContext.SubmitMessage != null && result.OverrideToParty)
{
if (messagingContext.SubmitMessage?.PartyInfo != null)
{
messagingContext.SubmitMessage.PartyInfo.ToParty = null;
}
messagingContext.SubmitMessage.PMode = result.CompletedSendingPMode;
}
return(StepResult.Success(messagingContext));
}
