private fhir.Basic WrapInBasic(fhir.SubscriptionTopic topic)
{
return(new fhir.Basic()
{
Id = topic.Id,
Code = new fhir.CodeableConcept()
{
Coding = new fhir.Coding[]
{
new fhir.Coding()
{
Code = "R5SubscriptionTopic",
System = "http://hl7.org/fhir/resource-types",
Display = "Backported R5 SubscriptionTopic"
}
}
},
Extension = new fhir.Extension[]
{
new fhir.Extension()
{
Url = "http://hl7.org/fhir/StructureDefinition/json-embedded-resource",
ValueString = JsonConvert.SerializeObject(
topic,
new JsonSerializerSettings()
{
NullValueHandling = NullValueHandling.Ignore,
ContractResolver = _contractResolver,
})
}
}
});
}
///-------------------------------------------------------------------------------------------------
/// <summary>Creates the topics.</summary>
///
/// <remarks>Gino Canessa, 6/4/2019.</remarks>
///-------------------------------------------------------------------------------------------------
private void CreateTopics()
{
// **** make sure our lists are clear ****
_titleTopicDict.Clear();
_canonicalUrlTopicDict.Clear();
_idTopicDict.Clear();
// **** create our known topics ****
fhir.SubscriptionTopic topic = new fhir.SubscriptionTopic()
{
Title = "admission",
Id = "1",
Url = "http://argonautproject.org/subscription-ig/Topic/admission",
Version = "0.4",
Status = "draft",
Experimental = true,
Description = "Admission Topic for testing framework and behavior",
Date = "2019-08-01",
ResourceTrigger = new fhir.SubscriptionTopicResourceTrigger()
{
Description = "Beginning of a clinical encounter",
ResourceType = new string[] { "Encounter" },
QueryCriteria = new SubscriptionTopicResourceTriggerQueryCriteria()
{
Previous = "status:not=in-progress",
Current = "status:in-progress",
RequireBoth = true,
},
FhirPathCriteria = "%previous.status!='in-progress' and %current.status='in-progress'",
},
CanFilterBy = new SubscriptionTopicCanFilterBy[]
{
new SubscriptionTopicCanFilterBy()
{
SearchParamName = "patient",
Documentation = "Exact match to a patient resource (reference)",
MatchType = new string[] { "=", "in", "not-in" }
},
},
};
// **** add this topic ****
_AddOrUpdate(topic);
}
///-------------------------------------------------------------------------------------------------
/// <summary>Adds or updates a Topic</summary>
///
/// <remarks>Gino Canessa, 6/6/2019.</remarks>
///
/// <param name="topic">The topic.</param>
///-------------------------------------------------------------------------------------------------
private void _AddOrUpdate(fhir.SubscriptionTopic topic)
{
string localUrl = Program.UrlForResourceId("Topic", topic.Title);
// **** check for local url already existing ****
if (_localUrlTopicDict.ContainsKey(localUrl))
{
fhir.SubscriptionTopic oldTopic = _localUrlTopicDict[localUrl];
// **** remove if this topic exists in other dictionaries ****
RemoveIfExists(_canonicalUrlTopicDict, oldTopic.Url);
RemoveIfExists(_titleTopicDict, localUrl);
RemoveIfExists(_idTopicDict, oldTopic.Title);
// **** remove from this dict ****
_localUrlTopicDict.Remove(topic.Title);
}
// **** check for this canonical url already existing ****
if (_canonicalUrlTopicDict.ContainsKey(topic.Url))
{
fhir.SubscriptionTopic oldTopic = _canonicalUrlTopicDict[topic.Url];
// **** remove if this topic exists in other dictionaries ****
RemoveIfExists(_localUrlTopicDict, localUrl);
RemoveIfExists(_titleTopicDict, oldTopic.Url);
RemoveIfExists(_idTopicDict, oldTopic.Title);
// **** remove from this dict ****
_canonicalUrlTopicDict.Remove(topic.Url);
}
// **** check for title already existing ****
if (_titleTopicDict.ContainsKey(topic.Title))
{
fhir.SubscriptionTopic oldTopic = _titleTopicDict[topic.Title];
// **** remove if this topic exists in other dictionaries ****
RemoveIfExists(_localUrlTopicDict, localUrl);
RemoveIfExists(_canonicalUrlTopicDict, oldTopic.Url);
RemoveIfExists(_idTopicDict, oldTopic.Title);
// **** remove from this dict ****
_titleTopicDict.Remove(topic.Title);
}
// **** check for this id already existing ****
if (_idTopicDict.ContainsKey(topic.Id))
{
fhir.SubscriptionTopic oldTopic = _idTopicDict[topic.Id];
// **** remove if this topic exists in other dictionaries ****
RemoveIfExists(_localUrlTopicDict, localUrl);
RemoveIfExists(_canonicalUrlTopicDict, oldTopic.Url);
RemoveIfExists(_titleTopicDict, oldTopic.Title);
// **** remove from this dict ****
_idTopicDict.Remove(topic.Id);
}
// **** add to local url dictionary ***
_localUrlTopicDict.Add(localUrl, topic);
// **** add to canonical url dictionary ****
_canonicalUrlTopicDict.Add(topic.Url, topic);
// **** add to the title dictionary ****
_titleTopicDict.Add(topic.Title, topic);
// **** add to id dictionary ****
_idTopicDict.Add(topic.Id, topic);
}
///-------------------------------------------------------------------------------------------------
/// <summary>Attempts to get topic a fhir.SubscriptionTopic from the given string.</summary>
///
/// <remarks>Gino Canessa, 11/5/2019.</remarks>
///
/// <param name="key"> The key for the topic</param>
/// <param name="topic">[out] The topic.</param>
///
/// <returns>True if it succeeds, false if it fails.</returns>
///-------------------------------------------------------------------------------------------------
public static bool TryGetTopic(string key, out fhir.SubscriptionTopic topic)
{
topic = GetTopic(key);
return(topic != null);
}
///-------------------------------------------------------------------------------------------------
/// <summary>Adds or updates a Topic</summary>
///
/// <remarks>Gino Canessa, 6/6/2019.</remarks>
///
/// <param name="topic">The topic.</param>
///-------------------------------------------------------------------------------------------------
public static void AddOrUpdate(fhir.SubscriptionTopic topic)
{
_instance._AddOrUpdate(topic);
}
/// <summary>Creates a subscription.</summary>
/// <param name="topic">The topic.</param>
/// <returns>An asynchronous result that yields true if it succeeds, false if it fails.</returns>
public static async Task <bool> CreateSubscription(fhir.SubscriptionTopic topic)
{
try
{
string url = string.IsNullOrEmpty(Configuration["Basic_Public_Url"])
? Configuration["Basic_Internal_Url"]
: Configuration["Basic_Public_Url"];
fhir.Subscription subscription = new Subscription()
{
ChannelType = SubscriptionChannelType.rest_hook,
Endpoint = url,
HeartbeatPeriod = 60,
Content = SubscriptionContentCodes.ID_ONLY,
ContentType = "application/fhir+json",
FilterBy = new SubscriptionFilterBy[]
{
new SubscriptionFilterBy()
{
SearchParamName = "patient",
SearchModifier = SubscriptionFilterBySearchModifierCodes.EQUALS,
Value = $"Patient/{_patientId}"
},
},
Topic = new Reference()
{
reference = topic.Url
},
Reason = "DevDays Example - C#",
Status = SubscriptionStatusCodes.REQUESTED,
};
string serialzed = JsonConvert.SerializeObject(
subscription,
new JsonSerializerSettings()
{
NullValueHandling = NullValueHandling.Ignore,
ContractResolver = _contractResolver,
});
// build our request
HttpRequestMessage request = new HttpRequestMessage()
{
Method = HttpMethod.Post,
RequestUri = GetFhirUri("Subscription"),
Headers =
{
Accept =
{
new MediaTypeWithQualityHeaderValue("application/fhir+json")
},
},
Content = new StringContent(
serialzed,
Encoding.UTF8,
"application/fhir+json"
),
};
request.Headers.Add("Prefer", "return=representation");
// make our request
HttpResponseMessage response = await _restClient.SendAsync(request);
// check the status code
if ((response.StatusCode != System.Net.HttpStatusCode.OK) &&
(response.StatusCode != System.Net.HttpStatusCode.Created) &&
(response.StatusCode != System.Net.HttpStatusCode.Accepted) &&
(response.StatusCode != System.Net.HttpStatusCode.NoContent))
{
Console.WriteLine($" Could not Post Subscription: {request.RequestUri.ToString()} returned: {response.StatusCode}");
return(false);
}
// parse the return
string body = await response.Content.ReadAsStringAsync();
fhir.Subscription sub = JsonConvert.DeserializeObject <fhir.Subscription>(body);
// grab the subscription id so we can clean up
_subscriptionId = sub.Id;
// good here
return(true);
}
catch (Exception ex)
{
Console.WriteLine($"Failed to Create Subscription: {ex.Message}");
return(false);
}
}