/// <summary>Queue messages for subscription.</summary>
/// <param name="subscription">The subscription.</param>
/// <param name="json"> The resource.</param>
public static void QueueMessagesForSubscription(
r5.Subscription subscription,
string json)
{
if (subscription == null)
{
return;
}
if (!_instance._subscriptionInfosDict.ContainsKey(subscription.Id))
{
return;
}
foreach (WebsocketClientInformation client in _instance._subscriptionInfosDict[subscription.Id])
{
// add this message to this client's queue (caller should have set it up correctly)
client.MessageQ.Enqueue(json);
//string clientMessage = string.Empty;
//// determine the type of message this client wants
//switch (client.PayloadType)
//{
// case WebsocketClientInformation.WebsocketPayloadTypes.Empty:
// case WebsocketClientInformation.WebsocketPayloadTypes.FullResource:
// case WebsocketClientInformation.WebsocketPayloadTypes.IdOnly:
// // serialize our bundle as our message
// clientMessage = json;
// break;
// case WebsocketClientInformation.WebsocketPayloadTypes.R4:
// // send a notification
// clientMessage = $"ping {subscription.Id}";
// break;
//}
//// add this message to this client's queue
//client.MessageQ.Enqueue(clientMessage);
}
}
/// <summary>Converts a different FHIR version subscription to R5.</summary>
/// <param name="s4">The subscription.</param>
/// <returns>R5 Subscription.</returns>
public static r5.Subscription SubscriptionToR5(r4.Subscription s4)
{
if (s4 == null)
{
return(null);
}
r5.Subscription s5 = new r5.Subscription()
{
Id = s4.Id,
ImplicitRules = s4.ImplicitRules,
Language = s4.Language,
End = s4.End,
Reason = s4.Reason,
Endpoint = s4.Channel.Endpoint,
Header = s4.Channel.Header,
ContentType = s4.Channel.Payload,
};
if (s4.Meta != null)
{
s5.Meta = new Meta();
if (s4.Meta.LastUpdated != null)
{
s5.Meta.LastUpdated = s4.Meta.LastUpdated;
}
if (s4.Meta.Profile != null)
{
s5.Meta.Profile = s4.Meta.Profile;
}
if (s4.Meta.Security != null)
{
s5.Meta.Security = new List <Coding>();
foreach (Coding c4 in s4.Meta.Security)
{
s5.Meta.Security.Add((Coding)c4.DeepCopy());
}
}
if (s4.Meta.Source != null)
{
s5.Meta.Source = s4.Meta.Source;
}
if (s4.Meta.Tag != null)
{
s5.Meta.Tag = new List <Coding>();
foreach (Coding c4 in s4.Meta.Tag)
{
s5.Meta.Tag.Add((Coding)c4.DeepCopy());
}
}
}
switch (s4.Status)
{
case r4.Subscription.SubscriptionStatus.Active:
s5.Status = r5.SubscriptionState.Active;
break;
case r4.Subscription.SubscriptionStatus.Error:
s5.Status = r5.SubscriptionState.Error;
break;
case r4.Subscription.SubscriptionStatus.Off:
s5.Status = r5.SubscriptionState.Off;
break;
case r4.Subscription.SubscriptionStatus.Requested:
s5.Status = r5.SubscriptionState.Requested;
break;
default:
Console.WriteLine($"Invalid R4 Subscription.Status: {s4.Status}");
return(null);
}
switch (s4.Channel.Type)
{
case r4.Subscription.SubscriptionChannelType.Email:
s5.ChannelType = new Coding()
{
System = CanonicalChannelType,
Code = "email",
};
break;
case r4.Subscription.SubscriptionChannelType.Message:
s5.ChannelType = new Coding()
{
System = CanonicalChannelType,
Code = "message",
};
break;
case r4.Subscription.SubscriptionChannelType.RestHook:
s5.ChannelType = new Coding()
{
System = CanonicalChannelType,
Code = "rest-hook",
};
break;
case r4.Subscription.SubscriptionChannelType.Websocket:
s5.ChannelType = new Coding()
{
System = CanonicalChannelType,
Code = "websocket",
};
break;
default:
Console.WriteLine($"Invalid R4 Subscription.Channel.Type: {s4.Channel.Type}");
return(null);
}
if ((s4.Extension == null) ||
(s4.Extension.Count == 0))
{
return(null);
}
foreach (Extension ext in s4.Extension)
{
if (ext.Url == ExtensionUrlTopic)
{
if (ext.Value is FhirUri)
{
s5.Topic = new ResourceReference(((FhirUri)ext.Value).Value);
break;
}
else if (ext.Value is Canonical)
{
s5.Topic = new ResourceReference(((Canonical)ext.Value).Value);
break;
}
}
}
if (s5.Topic == null)
{
#pragma warning disable CA1303 // Do not pass literals as localized parameters
Console.WriteLine($"R4 Subscription requires Extension: {ExtensionUrlTopic}");
#pragma warning restore CA1303 // Do not pass literals as localized parameters
return(null);
}
if (!SubscriptionTopicManager.TryGetTopic(s5.Topic.Reference, out r5.SubscriptionTopic topic))
{
Console.WriteLine($"Unknown R4 SubscriptionTopic: {s5.Topic.Reference}");
return(null);
}
if (topic.ResourceTrigger == null)
{
Console.WriteLine($"SubscriptionTopic: {topic.Url} requires resourceTrigger");
return(null);
}
if ((topic.ResourceTrigger.ResourceType == null) ||
(!topic.ResourceTrigger.ResourceType.Any()))
{
Console.WriteLine($"SubscriptionTopic: {topic.Url} requires resourceTrigger.resourceType");
return(null);
}
if (s4.Channel.Extension != null)
{
foreach (Extension ext in s4.Channel.Extension)
{
switch (ext.Url)
{
case ExtensionUrlHeartbeat:
if ((ext.Value != null) && (ext.Value is UnsignedInt))
{
s5.HeartbeatPeriod = ((UnsignedInt)ext.Value).Value;
}
break;
case ExtensionUrlTimeout:
if ((ext.Value != null) && (ext.Value is UnsignedInt))
{
s5.Timeout = ((UnsignedInt)ext.Value).Value;
}
break;
case ExtensionNotificationUrlLocation:
if ((ext.Value != null) && (ext.Value is Code))
{
// TODO: Need December 2020 R5 build
}
break;
case ExtensionMaxCount:
if ((ext.Value != null) && (ext.Value is PositiveInt))
{
// TODO: Need December 2020 R5 Build
}
break;
}
}
}
if ((s4.Channel.PayloadElement.Extension != null) &&
(s4.Channel.PayloadElement.Extension.Count > 0))
{
foreach (Extension ext in s4.Channel.PayloadElement.Extension)
{
if ((ext.Url == ExtensionUrlContent) && (ext.Value is Code))
{
switch (((Code)ext.Value).Value)
{
case "empty":
s5.Content = r5.Subscription.SubscriptionPayloadContent.Empty;
break;
case "id-only":
s5.Content = r5.Subscription.SubscriptionPayloadContent.IdOnly;
break;
case "full-resource":
s5.Content = r5.Subscription.SubscriptionPayloadContent.FullResource;
break;
default:
Console.WriteLine($"Invalid R4 Subscription.Channel.Payload Content: {((Code)ext.Value).Value}");
return(null);
}
}
}
}
if (!string.IsNullOrEmpty(s4.Criteria))
{
string criteria = s4.Criteria;
string resource = topic.ResourceTrigger.ResourceType.First().Value.ToString();
if (!criteria.StartsWith(resource, StringComparison.Ordinal))
{
Console.WriteLine(
$"R4 Subscription Criteria: {criteria}" +
$" must match SubscriptionTopic.resourceTrigger.resourceType: {resource}");
return(null);
}
// remove initial resource type plus the ?
criteria = criteria.Substring(resource.Length + 1);
string[] components = criteria.Split('&');
if (components.Length > 0)
{
s5.FilterBy = new List <r5.Subscription.FilterByComponent>();
}
foreach (string component in components)
{
if (TryExpandFilter(component, out r5.Subscription.FilterByComponent filter))
{
s5.FilterBy.Add(filter);
}
}
}
return(s5);
}
/// <summary>Converts an R5 subscription to another FHIR version.</summary>
/// <param name="s5">The subscription.</param>
/// <returns>The desired version of a subscription.</returns>
public static r4.Subscription SubscriptionFromR5(r5.Subscription s5)
{
if (s5 == null)
{
return(null);
}
if (s5.Topic == null)
{
return(null);
}
if (!SubscriptionTopicManager.TryGetTopic(s5.Topic.Reference, out r5.SubscriptionTopic topic))
{
Console.WriteLine($"Unknown R5 SubscriptionTopic: {s5.Topic.Reference}");
return(null);
}
if (topic.ResourceTrigger == null)
{
Console.WriteLine($"SubscriptionTopic: {topic.Url} requires resourceTrigger");
return(null);
}
if ((topic.ResourceTrigger.ResourceType == null) ||
(!topic.ResourceTrigger.ResourceType.Any()))
{
Console.WriteLine($"SubscriptionTopic: {topic.Url} requires resourceTrigger.resourceType");
return(null);
}
r4.Subscription s4 = new r4.Subscription()
{
Id = s5.Id,
ImplicitRules = s5.ImplicitRules,
Language = s5.Language,
End = s5.End,
Reason = s5.Reason,
Channel = new r4.Subscription.ChannelComponent()
{
Endpoint = s5.Endpoint,
Header = s5.Header,
Payload = s5.ContentType,
},
};
if (s5.Meta != null)
{
s4.Meta = new Meta();
if (s5.Meta.LastUpdated != null)
{
s4.Meta.LastUpdated = s5.Meta.LastUpdated;
}
if (s5.Meta.Profile != null)
{
s4.Meta.Profile = s5.Meta.Profile;
}
if (s5.Meta.Security != null)
{
s4.Meta.Security = new List <Coding>();
foreach (Coding c5 in s5.Meta.Security)
{
s4.Meta.Security.Add((Coding)c5.DeepCopy());
}
}
if (s5.Meta.Source != null)
{
s4.Meta.Source = s5.Meta.Source;
}
if (s5.Meta.Tag != null)
{
s4.Meta.Tag = new List <Coding>();
foreach (Coding c5 in s5.Meta.Tag)
{
s4.Meta.Tag.Add((Coding)c5.DeepCopy());
}
}
}
switch (s5.Status)
{
case r5.SubscriptionState.Active:
s4.Status = r4.Subscription.SubscriptionStatus.Active;
break;
case r5.SubscriptionState.Error:
s4.Status = r4.Subscription.SubscriptionStatus.Error;
break;
case r5.SubscriptionState.Off:
s4.Status = r4.Subscription.SubscriptionStatus.Off;
break;
case r5.SubscriptionState.Requested:
s4.Status = r4.Subscription.SubscriptionStatus.Requested;
break;
}
switch (s5.ChannelType.Code)
{
case "email":
s4.Channel.Type = r4.Subscription.SubscriptionChannelType.Email;
break;
case "message":
s4.Channel.Type = r4.Subscription.SubscriptionChannelType.Message;
break;
case "rest-hook":
s4.Channel.Type = r4.Subscription.SubscriptionChannelType.RestHook;
break;
case "websocket":
s4.Channel.Type = r4.Subscription.SubscriptionChannelType.Websocket;
break;
}
s4.Extension.Add(new Extension()
{
Url = ExtensionUrlTopic,
Value = new FhirUri(s5.Topic.Url),
});
if (s5.HeartbeatPeriod != null)
{
s4.Channel.Extension.Add(new Extension()
{
Url = ExtensionUrlHeartbeat,
Value = new UnsignedInt(s5.HeartbeatPeriod),
});
}
if (s5.Timeout != null)
{
s4.Channel.Extension.Add(new Extension()
{
Url = ExtensionUrlTimeout,
Value = new UnsignedInt(s5.Timeout),
});
}
switch (s5.Content)
{
case r5.Subscription.SubscriptionPayloadContent.Empty:
s4.Channel.PayloadElement.Extension = new List <Extension>()
{
new Extension()
{
Url = ExtensionUrlContent,
Value = new Code("empty"),
},
};
break;
case r5.Subscription.SubscriptionPayloadContent.IdOnly:
s4.Channel.PayloadElement.Extension = new List <Extension>()
{
new Extension()
{
Url = ExtensionUrlContent,
Value = new Code("id-only"),
},
};
break;
case r5.Subscription.SubscriptionPayloadContent.FullResource:
s4.Channel.PayloadElement.Extension = new List <Extension>()
{
new Extension()
{
Url = ExtensionUrlContent,
Value = new Code("full-resource"),
},
};
break;
}
if ((s5.FilterBy != null) && (s5.FilterBy.Count > 0))
{
StringBuilder sb = new StringBuilder();
sb.Append($"{topic.ResourceTrigger.ResourceType.First().Value}");
int addedCount = 0;
foreach (r5.Subscription.FilterByComponent filter in s5.FilterBy)
{
if (TryCondenseFilter(filter, out string value))
{
if (addedCount++ == 0)
{
sb.Append('?');
}
else
{
sb.Append('&');
}
sb.Append(value);
}
}
s4.Criteria = sb.ToString();
}
// TODO: Need December 2020 R5 build to add NotificationUrlLocation
s4.Channel.AddExtension(ExtensionNotificationUrlLocation, new Code("full-url"));
// TODO: Need December 2020 R5 build to add MaxCount
s4.Channel.AddExtension(ExtensionMaxCount, new PositiveInt(10));
return(s4);
}