public async Task Query_PaginationWorks()
{
DigitalTwinsClient client = GetClient();
int pageSize = 5;
string floorModelId = await GetUniqueModelIdAsync(client, TestAssetDefaults.FloorModelIdPrefix).ConfigureAwait(false);
string roomModelId = await GetUniqueModelIdAsync(client, TestAssetDefaults.RoomModelIdPrefix).ConfigureAwait(false);
TimeSpan QueryWaitTimeout = TimeSpan.FromMinutes(1); // Wait at most one minute for the created twins to become queryable
try
{
// Create room model
string roomModel = TestAssetsHelper.GetRoomModelPayload(roomModelId, floorModelId);
await CreateAndListModelsAsync(client, new List <string> {
roomModel
}).ConfigureAwait(false);
// Create a room twin, with property "IsOccupied": true
BasicDigitalTwin roomTwin = TestAssetsHelper.GetRoomTwinPayload(roomModelId);
for (int i = 0; i < pageSize * 2; i++)
{
string roomTwinId = await GetUniqueTwinIdAsync(client, TestAssetDefaults.RoomTwinIdPrefix).ConfigureAwait(false);
await client.CreateOrReplaceDigitalTwinAsync <BasicDigitalTwin>(roomTwinId, roomTwin).ConfigureAwait(false);
}
string queryString = "SELECT * FROM digitaltwins";
// act
CancellationTokenSource queryTimeoutCancellationToken = new CancellationTokenSource(QueryWaitTimeout);
bool queryHasExpectedCount = false;
while (!queryHasExpectedCount)
{
if (queryTimeoutCancellationToken.IsCancellationRequested)
{
throw new AssertionException($"Timed out waiting for at least {pageSize + 1} twins to be queryable");
}
AsyncPageable <BasicDigitalTwin> asyncPageableResponse = client.QueryAsync <BasicDigitalTwin>(queryString, queryTimeoutCancellationToken.Token);
int count = 0;
await foreach (Page <BasicDigitalTwin> queriedTwinPage in asyncPageableResponse.AsPages(pageSizeHint: pageSize))
{
count += queriedTwinPage.Values.Count;
}
// Once at least (page + 1) twins are query-able, then page size control can be tested.
queryHasExpectedCount = count >= pageSize + 1;
}
// assert
// Test that page size hint works, and that all returned pages either have the page size hint amount of
// elements, or have no continuation token (signaling that it is the last page)
int pageCount = 0;
await foreach (Page <BasicDigitalTwin> page in client.QueryAsync <BasicDigitalTwin>(queryString).AsPages(pageSizeHint: pageSize))
{
pageCount++;
if (page.ContinuationToken != null)
{
page.Values.Count.Should().Be(pageSize, "Unexpected page size for a non-terminal page");
}
}
pageCount.Should().BeGreaterThan(1, "Expected more than one page of query results");
}
catch (Exception ex)
{
Assert.Fail($"Failure in executing a step in the test case: {ex.Message}.");
}
finally
{
// clean up
try
{
if (!string.IsNullOrWhiteSpace(roomModelId))
{
await client.DeleteModelAsync(roomModelId).ConfigureAwait(false);
}
}
catch (Exception ex)
{
Assert.Fail($"Test clean up failed: {ex.Message}");
}
}
}
/// <summary>
/// Creates two digital twins, and connect them with relationships.
/// </summary>
public async Task RunSamplesAsync(DigitalTwinsClient client)
{
// For the purpose of keeping code snippets readable to the user, hardcoded string literals are used in place of assigned variables, eg Ids.
// Despite not being a good code practice, this prevents code snippets from being out of context for the user when making API calls that accept Ids as parameters.
PrintHeader("RELATIONSHIP SAMPLE");
// Create a building digital twin model.
string buildingModelPayload = SamplesConstants.TemporaryModelWithRelationshipPayload
.Replace(SamplesConstants.ModelId, "dtmi:samples:SampleBuilding;1")
.Replace(SamplesConstants.ModelDisplayName, "Building")
.Replace(SamplesConstants.RelationshipName, "contains")
.Replace(SamplesConstants.RelationshipTargetModelId, "dtmi:samples:SampleFloor;1");
Response <IReadOnlyList <Models.ModelData> > createBuildingModelResponse = await client.CreateModelsAsync(
new[]
{
buildingModelPayload
});
Console.WriteLine($"Created model with Id dtmi:samples:SampleBuilding;1. Response status: {createBuildingModelResponse.GetRawResponse().Status}.");
// Create a floor digital twin model.
string floorModelPayload = SamplesConstants.TemporaryModelWithRelationshipPayload
.Replace(SamplesConstants.ModelId, "dtmi:samples:SampleFloor;1")
.Replace(SamplesConstants.ModelDisplayName, "Floor")
.Replace(SamplesConstants.RelationshipName, "containedIn")
.Replace(SamplesConstants.RelationshipTargetModelId, "dtmi:samples:SampleBuilding;1");
Response <IReadOnlyList <Models.ModelData> > createFloorModelResponse = await client.CreateModelsAsync(
new[]
{
floorModelPayload
});
Console.WriteLine($"Created model with Id dtmi:samples:SampleFloor;1. Response status: {createFloorModelResponse.GetRawResponse().Status}.");
// Create a building digital twin.
var buildingDigitalTwin = new BasicDigitalTwin
{
Id = "buildingTwinId",
Metadata = { ModelId = "dtmi:samples:SampleBuilding;1" }
};
string buildingDigitalTwinPayload = JsonSerializer.Serialize(buildingDigitalTwin);
Response <string> createBuildingDigitalTwinResponse = await client.CreateDigitalTwinAsync("buildingTwinId", buildingDigitalTwinPayload);
Console.WriteLine($"Created a digital twin with Id buildingTwinId. Response status: {createBuildingDigitalTwinResponse.GetRawResponse().Status}.");
// Create a floor digital.
var floorDigitalTwin = new BasicDigitalTwin
{
Id = "floorTwinId",
Metadata = { ModelId = "dtmi:samples:SampleFloor;1" }
};
string floorDigitalTwinPayload = JsonSerializer.Serialize(floorDigitalTwin);
Response <string> createFloorDigitalTwinResponse = await client.CreateDigitalTwinAsync("floorTwinId", floorDigitalTwinPayload);
Console.WriteLine($"Created a digital twin with Id floorTwinId. Response status: {createFloorDigitalTwinResponse.GetRawResponse().Status}.");
// Create a relationship between building and floor using the BasicRelationship serialization helper.
#region Snippet:DigitalTwinsSampleCreateBasicRelationship
var buildingFloorRelationshipPayload = new BasicRelationship
{
Id = "buildingFloorRelationshipId",
SourceId = "buildingTwinId",
TargetId = "floorTwinId",
Name = "contains",
CustomProperties =
{
{ "Prop1", "Prop1 value" },
{ "Prop2", 6 }
}
};
string serializedRelationship = JsonSerializer.Serialize(buildingFloorRelationshipPayload);
Response <string> createRelationshipResponse = await client.CreateRelationshipAsync("buildingTwinId", "buildingFloorRelationshipId", serializedRelationship);
Console.WriteLine($"Created a digital twin relationship with Id buildingFloorRelationshipId from digital twin with Id buildingTwinId to digital twin with Id floorTwinId. " +
$"Response status: {createRelationshipResponse.GetRawResponse().Status}.");
#endregion Snippet:DigitalTwinsSampleCreateBasicRelationship
// You can get a relationship and deserialize it into a BasicRelationship.
#region Snippet:DigitalTwinsSampleGetBasicRelationship
Response <string> getBasicRelationshipResponse = await client.GetRelationshipAsync("buildingTwinId", "buildingFloorRelationshipId");
if (getBasicRelationshipResponse.GetRawResponse().Status == (int)HttpStatusCode.OK)
{
BasicRelationship basicRelationship = JsonSerializer.Deserialize <BasicRelationship>(getBasicRelationshipResponse.Value);
Console.WriteLine($"Retrieved relationship with Id {basicRelationship.Id} from digital twin with Id {basicRelationship.SourceId}. " +
$"Response status: {getBasicRelationshipResponse.GetRawResponse().Status}.\n\t" +
$"Prop1: {basicRelationship.CustomProperties["Prop1"]}\n\t" +
$"Prop2: {basicRelationship.CustomProperties["Prop2"]}");
}
#endregion Snippet:DigitalTwinsSampleGetBasicRelationship
// Alternatively, you can create your own custom data types to serialize and deserialize your relationships.
// This requires less code or knowledge of the type for interaction.
// Create a relationship between floorTwinId and buildingTwinId using a custom data type.
#region Snippet:DigitalTwinsSampleCreateCustomRelationship
var floorBuildingRelationshipPayload = new CustomRelationship
{
Id = "floorBuildingRelationshipId",
SourceId = "floorTwinId",
TargetId = "buildingTwinId",
Name = "containedIn",
Prop1 = "Prop1 val",
Prop2 = 4
};
string serializedCustomRelationship = JsonSerializer.Serialize(floorBuildingRelationshipPayload);
Response <string> createCustomRelationshipResponse = await client.CreateRelationshipAsync("floorTwinId", "floorBuildingRelationshipId", serializedCustomRelationship);
Console.WriteLine($"Created a digital twin relationship with Id floorBuildingRelationshipId from digital twin with Id floorTwinId to digital twin with Id buildingTwinId. " +
$"Response status: {createCustomRelationshipResponse.GetRawResponse().Status}.");
#endregion Snippet:DigitalTwinsSampleCreateCustomRelationship
// Getting and deserializing a relationship into a custom data type is extremely easy.
#region Snippet:DigitalTwinsSampleGetCustomRelationship
Response <string> getCustomRelationshipResponse = await client.GetRelationshipAsync("floorTwinId", "floorBuildingRelationshipId");
if (getCustomRelationshipResponse.GetRawResponse().Status == (int)HttpStatusCode.OK)
{
CustomRelationship getCustomRelationship = JsonSerializer.Deserialize <CustomRelationship>(getCustomRelationshipResponse.Value);
Console.WriteLine($"Retrieved and deserialized relationship with Id {getCustomRelationship.Id} from digital twin with Id {getCustomRelationship.SourceId}. " +
$"Response status: {getCustomRelationshipResponse.GetRawResponse().Status}.\n\t" +
$"Prop1: {getCustomRelationship.Prop1}\n\t" +
$"Prop2: {getCustomRelationship.Prop2}");
}
#endregion Snippet:DigitalTwinsSampleGetCustomRelationship
// Get all relationships in the graph where buildingTwinId is the source of the relationship.
#region Snippet:DigitalTwinsSampleGetAllRelationships
AsyncPageable <string> relationships = client.GetRelationshipsAsync("buildingTwinId");
await foreach (var relationshipJson in relationships)
{
BasicRelationship relationship = JsonSerializer.Deserialize <BasicRelationship>(relationshipJson);
Console.WriteLine($"Found relationship with Id {relationship.Id} with a digital twin source Id {relationship.SourceId} and " +
$"a digital twin target Id {relationship.TargetId}. \n\t " +
$"Prop1: {relationship.CustomProperties["Prop1"]}\n\t" +
$"Prop2: {relationship.CustomProperties["Prop2"]}");
}
#endregion Snippet:DigitalTwinsSampleGetAllRelationships
// Get all incoming relationships in the graph where buildingTwinId is the target of the relationship.
#region Snippet:DigitalTwinsSampleGetIncomingRelationships
AsyncPageable <IncomingRelationship> incomingRelationships = client.GetIncomingRelationshipsAsync("buildingTwinId");
await foreach (IncomingRelationship incomingRelationship in incomingRelationships)
{
Console.WriteLine($"Found an incoming relationship with Id {incomingRelationship.RelationshipId} coming from a digital twin with Id {incomingRelationship.SourceId}.");
}
#endregion Snippet:DigitalTwinsSampleGetIncomingRelationships
// Delete the contains relationship, created earlier in the sample code, from building to floor.
#region Snippet:DigitalTwinsSampleDeleteRelationship
Response deleteBuildingRelationshipResponse = await client.DeleteRelationshipAsync("buildingTwinId", "buildingFloorRelationshipId");
Console.WriteLine($"Deleted relationship with Id buildingFloorRelationshipId. Status response: {deleteBuildingRelationshipResponse.Status}.");
#endregion Snippet:DigitalTwinsSampleDeleteRelationship
// Delete the containedIn relationship, created earlier in the sample code, from floor to building.
Response deleteFloorRelationshipResponse = await client.DeleteRelationshipAsync("floorTwinId", "floorBuildingRelationshipId");
Console.WriteLine($"Deleted relationship with Id floorBuildingRelationshipId. Status response: {deleteFloorRelationshipResponse.Status}.");
// Clean up.
try
{
// Delete all twins
await client.DeleteDigitalTwinAsync("buildingTwinId");
await client.DeleteDigitalTwinAsync("floorTwinId");
}
catch (RequestFailedException ex)
{
Console.WriteLine($"Failed to delete digital twin due to {ex}.");
}
try
{
await client.DeleteModelAsync("dtmi:samples:SampleBuilding;1");
await client.DeleteModelAsync("dtmi:samples:SampleFloor;1");
}
catch (RequestFailedException ex)
{
Console.WriteLine($"Failed to delete model due to {ex}.");
}
}
public async Task PublishTelemetry_Lifecycle()
{
// Setup
// Create a DigitalTwinsClient instance.
DigitalTwinsClient client = GetClient();
string wifiComponentName = "wifiAccessPoint";
string wifiModelId = await GetUniqueModelIdAsync(client, TestAssetDefaults.WifiModelIdPrefix).ConfigureAwait(false);
string roomWithWifiModelId = await GetUniqueModelIdAsync(client, TestAssetDefaults.RoomWithWifiModelIdPrefix).ConfigureAwait(false);
string roomWithWifiTwinId = await GetUniqueTwinIdAsync(client, TestAssetDefaults.RoomWithWifiTwinIdPrefix).ConfigureAwait(false);
string eventRouteId = $"someEventRouteId-{GetRandom()}";
try
{
// Create an event route for the digital twins client.
DigitalTwinsEventRoute eventRoute = await CreateEventRoute(client, eventRouteId).ConfigureAwait(false);
// Create the models needed for the digital twin.
await CreateModelsAndTwins(client, wifiModelId, roomWithWifiModelId, wifiComponentName, roomWithWifiTwinId).ConfigureAwait(false);
// Act - Test publishing telemetry to a digital twin.
var telemetryOptions = new PublishTelemetryOptions()
{
TimeStamp = default
};
Response publishTelemetryResponse = await client.PublishTelemetryAsync(roomWithWifiTwinId, Recording.Random.NewGuid().ToString(), "{\"Telemetry1\": 5}", telemetryOptions).ConfigureAwait(false);
// Assert
publishTelemetryResponse.Status.Should().Be((int)HttpStatusCode.NoContent);
// Act - Test publishing telemetry to a component in a digital twin.
var componentTelemetryOptions = new PublishComponentTelemetryOptions()
{
TimeStamp = default
};
var telemetryPayload = new Dictionary <string, int>
{
{ "ComponentTelemetry1", 9 }
};
Response publishComponentTelemetryResponse = await client
.PublishComponentTelemetryAsync(roomWithWifiTwinId, wifiComponentName, Recording.Random.NewGuid().ToString(), JsonSerializer.Serialize(telemetryPayload), componentTelemetryOptions)
.ConfigureAwait(false);
// Assert
publishComponentTelemetryResponse.Status.Should().Be((int)HttpStatusCode.NoContent);
}
catch (Exception ex)
{
Assert.Fail($"Failure in executing a step in the test case: {ex.Message}.");
}
finally
{
// clean up
try
{
if (!string.IsNullOrWhiteSpace(eventRouteId))
{
await client.DeleteEventRouteAsync(eventRouteId).ConfigureAwait(false);
}
if (!string.IsNullOrWhiteSpace(roomWithWifiTwinId))
{
await client.DeleteDigitalTwinAsync(roomWithWifiTwinId).ConfigureAwait(false);
}
if (!string.IsNullOrWhiteSpace(roomWithWifiModelId))
{
await client.DeleteModelAsync(roomWithWifiModelId).ConfigureAwait(false);
}
if (!string.IsNullOrWhiteSpace(wifiModelId))
{
await client.DeleteModelAsync(wifiModelId).ConfigureAwait(false);
}
}
catch (Exception ex)
{
Assert.Fail($"Test clean up failed: {ex.Message}");
}
}
}
public async Task Component_UpdateComponentFailsWhenIfMatchHeaderOutOfDate()
{
// arrange
DigitalTwinsClient client = GetClient();
string wifiModelId = await GetUniqueModelIdAsync(client, TestAssetDefaults.WifiModelIdPrefix).ConfigureAwait(false);
string roomWithWifiModelId = await GetUniqueModelIdAsync(client, TestAssetDefaults.RoomWithWifiModelIdPrefix).ConfigureAwait(false);
string roomWithWifiTwinId = await GetUniqueTwinIdAsync(client, TestAssetDefaults.RoomWithWifiTwinIdPrefix).ConfigureAwait(false);
string wifiComponentName = "wifiAccessPoint";
try
{
// CREATE
// create roomWithWifi model
string wifiModel = TestAssetsHelper.GetWifiModelPayload(wifiModelId);
// create wifi model
string roomWithWifiModel = TestAssetsHelper.GetRoomWithWifiModelPayload(roomWithWifiModelId, wifiModelId, wifiComponentName);
await CreateAndListModelsAsync(client, new List <string> {
roomWithWifiModel, wifiModel
}).ConfigureAwait(false);
// create room digital twin
BasicDigitalTwin roomWithWifiTwin = TestAssetsHelper.GetRoomWithWifiTwinPayload(roomWithWifiModelId, wifiComponentName);
await client.CreateOrReplaceDigitalTwinAsync <BasicDigitalTwin>(roomWithWifiTwinId, roomWithWifiTwin);
// Get the component
Response <object> getComponentResponse = await client
.GetComponentAsync <object>(
roomWithWifiTwinId,
wifiComponentName)
.ConfigureAwait(false);
ETag?etagBeforeUpdate = (await client.GetDigitalTwinAsync <BasicDigitalTwin>(roomWithWifiTwinId)).Value.ETag;
// Patch component
JsonPatchDocument componentUpdatePatchDocument = new JsonPatchDocument();
componentUpdatePatchDocument.AppendReplace("/Network", "New Network");
Response updateComponentResponse = await client
.UpdateComponentAsync(
roomWithWifiTwinId,
wifiComponentName,
componentUpdatePatchDocument)
.ConfigureAwait(false);
// Patch component again, but with the now out of date ETag
JsonPatchDocument secondComponentUpdatePatchDocument = new JsonPatchDocument();
secondComponentUpdatePatchDocument.AppendReplace("/Network", "Even newer Network");
Func <Task> act = async() =>
{
await client
.UpdateComponentAsync(
roomWithWifiTwinId,
wifiComponentName,
secondComponentUpdatePatchDocument,
etagBeforeUpdate)
.ConfigureAwait(false);
};
act.Should().Throw <RequestFailedException>()
.And.Status.Should().Be((int)HttpStatusCode.PreconditionFailed);
}
catch (Exception ex)
{
Assert.Fail($"Failure in executing a step in the test case: {ex.Message}.");
}
finally
{
// clean up
try
{
if (!string.IsNullOrWhiteSpace(roomWithWifiTwinId))
{
await client.DeleteDigitalTwinAsync(roomWithWifiTwinId).ConfigureAwait(false);
}
if (!string.IsNullOrWhiteSpace(roomWithWifiModelId))
{
await client.DeleteModelAsync(roomWithWifiModelId).ConfigureAwait(false);
}
if (!string.IsNullOrWhiteSpace(wifiModelId))
{
await client.DeleteModelAsync(wifiModelId).ConfigureAwait(false);
}
}
catch (Exception ex)
{
Assert.Fail($"Test clean up failed: {ex.Message}");
}
}
}
public async Task DigitalTwins_Lifecycle()
{
DigitalTwinsClient client = GetClient();
string roomTwinId = await GetUniqueTwinIdAsync(client, TestAssetDefaults.RoomTwinIdPrefix).ConfigureAwait(false);
string floorModelId = await GetUniqueModelIdAsync(client, TestAssetDefaults.FloorModelIdPrefix).ConfigureAwait(false);
string roomModelId = await GetUniqueModelIdAsync(client, TestAssetDefaults.RoomModelIdPrefix).ConfigureAwait(false);
try
{
// arrange
// create room model
string roomModel = TestAssetsHelper.GetRoomModelPayload(roomModelId, floorModelId);
await client.CreateModelsAsync(new List <string> {
roomModel
}).ConfigureAwait(false);
// act
// create room twin
BasicDigitalTwin roomTwin = TestAssetsHelper.GetRoomTwinPayload(roomModelId);
await client.CreateOrReplaceDigitalTwinAsync <BasicDigitalTwin>(roomTwinId, roomTwin).ConfigureAwait(false);
// get twin
await client.GetDigitalTwinAsync <BasicDigitalTwin>(roomTwinId).ConfigureAwait(false);
// update twin
JsonPatchDocument updateTwinPatchDocument = new JsonPatchDocument();
updateTwinPatchDocument.AppendAdd("/Humidity", 30);
updateTwinPatchDocument.AppendReplace("/Temperature", 70);
updateTwinPatchDocument.AppendRemove("/EmployeeId");
var requestOptions = new UpdateDigitalTwinOptions
{
IfMatch = "*"
};
await client.UpdateDigitalTwinAsync(roomTwinId, updateTwinPatchDocument, requestOptions).ConfigureAwait(false);
// delete a twin
await client.DeleteDigitalTwinAsync(roomTwinId).ConfigureAwait(false);
// assert
Func <Task> act = async() =>
{
await client.GetDigitalTwinAsync <BasicDigitalTwin>(roomTwinId).ConfigureAwait(false);
};
act.Should().Throw <RequestFailedException>()
.And.Status.Should().Be((int)HttpStatusCode.NotFound);
}
finally
{
// cleanup
try
{
if (!string.IsNullOrWhiteSpace(roomModelId))
{
await client.DeleteModelAsync(roomModelId).ConfigureAwait(false);
}
}
catch (Exception ex)
{
Assert.Fail($"Test clean up failed: {ex.Message}");
}
}
}
public async Task Component_Lifecycle()
{
// arrange
DigitalTwinsClient client = GetClient();
string wifiModelId = await GetUniqueModelIdAsync(client, TestAssetSettings.WifiModelIdPrefix).ConfigureAwait(false);
string roomWithWifiModelId = await GetUniqueModelIdAsync(client, TestAssetSettings.RoomWithWifiModelIdPrefix).ConfigureAwait(false);
string roomWithWifiTwinId = await GetUniqueTwinIdAsync(client, TestAssetSettings.RoomWithWifiTwinIdPrefix).ConfigureAwait(false);
string wifiComponentName = "wifiAccessPoint";
try
{
// CREATE
// create roomWithWifi model
string wifiModel = TestAssetsHelper.GetWifiModelPayload(wifiModelId);
// create wifi model
string roomWithWifiModel = TestAssetsHelper.GetRoomWithWifiModelPayload(roomWithWifiModelId, wifiModelId, wifiComponentName);
await client.CreateModelsAsync(new List <string> {
roomWithWifiModel, wifiModel
}).ConfigureAwait(false);
// create room digital twin
string roomWithWifiTwin = TestAssetsHelper.GetRoomWithWifiTwinPayload(roomWithWifiModelId, wifiModelId, wifiComponentName);
await client.CreateDigitalTwinAsync(roomWithWifiTwinId, roomWithWifiTwin);
// Get the component
Response <string> getComponentResponse = await client
.GetComponentAsync(
roomWithWifiTwinId,
wifiComponentName)
.ConfigureAwait(false);
// The response to the GET request should be 200 (OK)
getComponentResponse.GetRawResponse().Status.Should().Be((int)HttpStatusCode.OK);
// Patch component
Response <string> updateComponentResponse = await client
.UpdateComponentAsync(
roomWithWifiTwinId,
wifiComponentName,
TestAssetsHelper.GetWifiComponentUpdatePayload())
.ConfigureAwait(false);
// The response to the Patch request should be 204 (No content)
updateComponentResponse.GetRawResponse().Status.Should().Be((int)HttpStatusCode.NoContent);
}
finally
{
// clean up
try
{
if (!string.IsNullOrWhiteSpace(roomWithWifiTwinId))
{
await client.DeleteDigitalTwinAsync(roomWithWifiTwinId).ConfigureAwait(false);
}
if (!string.IsNullOrWhiteSpace(roomWithWifiModelId))
{
await client.DeleteModelAsync(roomWithWifiModelId).ConfigureAwait(false);
}
if (!string.IsNullOrWhiteSpace(wifiModelId))
{
await client.DeleteModelAsync(wifiModelId).ConfigureAwait(false);
}
}
catch (Exception ex)
{
Assert.Fail($"Test clean up failed: {ex.Message}");
}
}
}
/// <summary>
/// Creates a new model with a random Id
/// Decommission the newly created model and check for success
/// </summary>
public async Task RunSamplesAsync(DigitalTwinsClient client)
{
PrintHeader("MODEL LIFECYCLE SAMPLE");
// For the purpose of this example we will create temporary models using random model Ids and then decommission a model.
// We have to make sure these model Ids are unique within the DT instance.
string newComponentModelId = await GetUniqueModelIdAsync(SamplesConstants.TemporaryComponentModelPrefix, client);
string sampleModelId = await GetUniqueModelIdAsync(SamplesConstants.TemporaryModelPrefix, client);
string newComponentModelPayload = SamplesConstants.TemporaryComponentModelPayload
.Replace(SamplesConstants.ComponentId, newComponentModelId);
string newModelPayload = SamplesConstants.TemporaryModelWithComponentPayload
.Replace(SamplesConstants.ModelId, sampleModelId)
.Replace(SamplesConstants.ComponentId, newComponentModelId);
// Then we create the model
try
{
#region Snippet:DigitalTwinsSampleCreateModels
Response <IReadOnlyList <ModelData> > response = await client.CreateModelsAsync(new[] { newComponentModelPayload, newModelPayload });
Console.WriteLine($"Successfully created a model with Id: {newComponentModelId}, {sampleModelId}, status: {response.GetRawResponse().Status}");
#endregion Snippet:DigitalTwinsSampleCreateModels
}
catch (RequestFailedException ex) when(ex.Status == (int)HttpStatusCode.Conflict)
{
Console.WriteLine($"One or more models already existed.");
}
catch (Exception ex)
{
FatalError($"Failed to create models due to:\n{ex}");
}
// Get Model
try
{
#region Snippet:DigitalTwinsSampleGetModel
Response <ModelData> sampleModel = await client.GetModelAsync(sampleModelId);
#endregion Snippet:DigitalTwinsSampleGetModel
Console.WriteLine($"{sampleModel.Value.Id} has decommission status of {sampleModel.Value.Decommissioned}");
}
catch (Exception ex)
{
FatalError($"Failed to get a model due to:\n{ex}");
}
// Now we decommission the model
#region Snippet:DigitalTwinsSampleDecommisionModel
try
{
await client.DecommissionModelAsync(sampleModelId);
Console.WriteLine($"Successfully decommissioned model {sampleModelId}");
}
catch (RequestFailedException ex)
{
FatalError($"Failed to decommision model {sampleModelId} due to:\n{ex}");
}
#endregion Snippet:DigitalTwinsSampleDecommisionModel
// Now delete created model
#region Snippet:DigitalTwinsSampleDeleteModel
try
{
await client.DeleteModelAsync(sampleModelId);
Console.WriteLine($"Deleted model {sampleModelId}");
}
catch (Exception ex)
{
FatalError($"Failed to delete model {sampleModelId} due to:\n{ex}");
}
#endregion Snippet:DigitalTwinsSampleDeleteModel
}
public async Task Relationships_Lifecycle()
{
// arrange
DigitalTwinsClient client = GetClient();
var floorContainsRoomRelationshipId = "FloorToRoomRelationship";
var floorCooledByHvacRelationshipId = "FloorToHvacRelationship";
var hvacCoolsFloorRelationshipId = "HvacToFloorRelationship";
var roomContainedInFloorRelationshipId = "RoomToFloorRelationship";
string floorModelId = await GetUniqueModelIdAsync(client, TestAssetDefaults.FloorModelIdPrefix).ConfigureAwait(false);
string roomModelId = await GetUniqueModelIdAsync(client, TestAssetDefaults.RoomModelIdPrefix).ConfigureAwait(false);
string hvacModelId = await GetUniqueTwinIdAsync(client, TestAssetDefaults.HvacModelIdPrefix).ConfigureAwait(false);
string floorTwinId = await GetUniqueTwinIdAsync(client, TestAssetDefaults.FloorTwinIdPrefix).ConfigureAwait(false);
string roomTwinId = await GetUniqueTwinIdAsync(client, TestAssetDefaults.RoomTwinIdPrefix).ConfigureAwait(false);
string hvacTwinId = await GetUniqueTwinIdAsync(client, TestAssetDefaults.HvacTwinIdPrefix).ConfigureAwait(false);
try
{
// create floor, room and hvac model
string floorModel = TestAssetsHelper.GetFloorModelPayload(floorModelId, roomModelId, hvacModelId);
string roomModel = TestAssetsHelper.GetRoomModelPayload(roomModelId, floorModelId);
string hvacModel = TestAssetsHelper.GetHvacModelPayload(hvacModelId, floorModelId);
await client.CreateModelsAsync(new List <string> {
floorModel, roomModel, hvacModel
}).ConfigureAwait(false);
// create floor twin
BasicDigitalTwin floorTwin = TestAssetsHelper.GetFloorTwinPayload(floorModelId);
await client.CreateDigitalTwinAsync <BasicDigitalTwin>(floorTwinId, floorTwin).ConfigureAwait(false);
// Create room twin
BasicDigitalTwin roomTwin = TestAssetsHelper.GetRoomTwinPayload(roomModelId);
await client.CreateDigitalTwinAsync <BasicDigitalTwin>(roomTwinId, roomTwin).ConfigureAwait(false);
// create hvac twin
BasicDigitalTwin hvacTwin = TestAssetsHelper.GetHvacTwinPayload(hvacModelId);
await client.CreateDigitalTwinAsync <BasicDigitalTwin>(hvacTwinId, hvacTwin).ConfigureAwait(false);
BasicRelationship floorContainsRoomPayload = TestAssetsHelper.GetRelationshipWithPropertyPayload(roomTwinId, ContainsRelationship, "isAccessRestricted", true);
BasicRelationship floorTwinCoolsRelationshipPayload = TestAssetsHelper.GetRelationshipPayload(floorTwinId, CoolsRelationship);
BasicRelationship floorTwinContainedInRelationshipPayload = TestAssetsHelper.GetRelationshipPayload(floorTwinId, ContainedInRelationship);
BasicRelationship floorCooledByHvacPayload = TestAssetsHelper.GetRelationshipPayload(hvacTwinId, CooledByRelationship);
JsonPatchDocument floorContainsRoomUpdatePayload = new JsonPatchDocument();
floorContainsRoomUpdatePayload.AppendReplace("/isAccessRestricted", false);
// CREATE relationships
// create Relationship from Floor -> Room
await client
.CreateRelationshipAsync <BasicRelationship>(
floorTwinId,
floorContainsRoomRelationshipId,
floorContainsRoomPayload)
.ConfigureAwait(false);
// create Relationship from Floor -> Hvac
await client
.CreateRelationshipAsync <BasicRelationship>(
floorTwinId,
floorCooledByHvacRelationshipId,
floorCooledByHvacPayload)
.ConfigureAwait(false);
// create Relationship from Hvac -> Floor
await client
.CreateRelationshipAsync <BasicRelationship>(
hvacTwinId,
hvacCoolsFloorRelationshipId,
floorTwinCoolsRelationshipPayload)
.ConfigureAwait(false);
// create Relationship from Room -> Floor
await client
.CreateRelationshipAsync <BasicRelationship>(
roomTwinId,
roomContainedInFloorRelationshipId,
floorTwinContainedInRelationshipPayload)
.ConfigureAwait(false);
// UPDATE relationships
// create Relationship from Floor -> Room
await client
.UpdateRelationshipAsync(
floorTwinId,
floorContainsRoomRelationshipId,
floorContainsRoomUpdatePayload)
.ConfigureAwait(false);
// GET relationship
Response <BasicRelationship> containsRelationshipId = await client
.GetRelationshipAsync <BasicRelationship>(
floorTwinId,
floorContainsRoomRelationshipId)
.ConfigureAwait(false);
// LIST incoming relationships
AsyncPageable <IncomingRelationship> incomingRelationships = client.GetIncomingRelationshipsAsync(floorTwinId);
int numberOfIncomingRelationshipsToFloor = 0;
await foreach (IncomingRelationship relationship in incomingRelationships)
{
++numberOfIncomingRelationshipsToFloor;
}
numberOfIncomingRelationshipsToFloor.Should().Be(2, "floor has incoming relationships from room and hvac");
// LIST relationships
AsyncPageable <string> floorRelationships = client.GetRelationshipsAsync(floorTwinId);
int numberOfFloorRelationships = 0;
await foreach (var relationship in floorRelationships)
{
++numberOfFloorRelationships;
}
numberOfFloorRelationships.Should().Be(2, "floor has an relationship to room and hvac");
// LIST relationships by name
AsyncPageable <string> roomTwinRelationships = client
.GetRelationshipsAsync(
roomTwinId,
ContainedInRelationship);
containsRelationshipId.Value.Id.Should().Be(floorContainsRoomRelationshipId);
int numberOfRelationships = 0;
await foreach (var relationship in roomTwinRelationships)
{
++numberOfRelationships;
}
numberOfRelationships.Should().Be(1, "room has only one containedIn relationship to floor");
await client
.DeleteRelationshipAsync(
floorTwinId,
floorContainsRoomRelationshipId)
.ConfigureAwait(false);
await client
.DeleteRelationshipAsync(
roomTwinId,
roomContainedInFloorRelationshipId)
.ConfigureAwait(false);
await client
.DeleteRelationshipAsync(
floorTwinId,
floorCooledByHvacRelationshipId)
.ConfigureAwait(false);
await client
.DeleteRelationshipAsync(
hvacTwinId,
hvacCoolsFloorRelationshipId)
.ConfigureAwait(false);
Func <Task> act = async() =>
{
await client
.GetRelationshipAsync <BasicRelationship>(
floorTwinId,
floorContainsRoomRelationshipId)
.ConfigureAwait(false);
};
act.Should().Throw <RequestFailedException>()
.And.Status.Should().Be((int)HttpStatusCode.NotFound);
act = async() =>
{
await client
.GetRelationshipAsync <BasicRelationship>(
roomTwinId,
roomContainedInFloorRelationshipId)
.ConfigureAwait(false);
};
act.Should().Throw <RequestFailedException>().
And.Status.Should().Be((int)HttpStatusCode.NotFound);
act = async() =>
{
await client
.GetRelationshipAsync <BasicRelationship>(
floorTwinId,
floorCooledByHvacRelationshipId)
.ConfigureAwait(false);
};
act.Should().Throw <RequestFailedException>().
And.Status.Should().Be((int)HttpStatusCode.NotFound);
act = async() =>
{
await client
.GetRelationshipAsync <BasicRelationship>(
hvacTwinId,
hvacCoolsFloorRelationshipId)
.ConfigureAwait(false);
};
act.Should().Throw <RequestFailedException>()
.And.Status.Should().Be((int)HttpStatusCode.NotFound);
}
finally
{
// clean up
try
{
await Task
.WhenAll(
client.DeleteDigitalTwinAsync(floorTwinId),
client.DeleteDigitalTwinAsync(roomTwinId),
client.DeleteDigitalTwinAsync(hvacTwinId),
client.DeleteModelAsync(hvacModelId),
client.DeleteModelAsync(floorModelId),
client.DeleteModelAsync(roomModelId))
.ConfigureAwait(false);
}
catch (Exception ex)
{
Assert.Fail($"Test clean up failed: {ex.Message}");
}
}
}
/// <summary>
/// Create a temporary component model, twin model and digital twin instance.
/// Publish a telemetry message and a component telemetry message to the digital twin instance.
/// </summary>
public async Task RunSamplesAsync(DigitalTwinsClient client)
{
PrintHeader("PUBLISH TELEMETRY MESSAGE SAMPLE");
// For the purpose of this example we will create temporary models using a random model Ids.
// We will also create temporary twin instances to publish the telemetry to.
string componentModelId = await GetUniqueModelIdAsync(SamplesConstants.TemporaryComponentModelPrefix, client);
string modelId = await GetUniqueModelIdAsync(SamplesConstants.TemporaryModelPrefix, client);
string twinId = await GetUniqueTwinIdAsync(SamplesConstants.TemporaryTwinPrefix, client);
string newComponentModelPayload = SamplesConstants.TemporaryComponentModelPayload
.Replace(SamplesConstants.ComponentId, componentModelId);
string newModelPayload = SamplesConstants.TemporaryModelWithComponentPayload
.Replace(SamplesConstants.ModelId, modelId)
.Replace(SamplesConstants.ComponentId, componentModelId);
// Then we create the models.
await client
.CreateModelsAsync(new[] { newComponentModelPayload, newModelPayload });
Console.WriteLine($"Successfully created models with Ids: {componentModelId}, {modelId}");
// Create digital twin with Component payload.
string twinPayload = SamplesConstants.TemporaryTwinPayload
.Replace(SamplesConstants.ModelId, modelId);
await client.CreateDigitalTwinAsync(twinId, twinPayload);
Console.WriteLine($"Created digital twin {twinId}.");
try
{
#region Snippet:DigitalTwinsSamplePublishTelemetry
// construct your json telemetry payload by hand.
Response publishTelemetryResponse = await client.PublishTelemetryAsync(twinId, "{\"Telemetry1\": 5}");
Console.WriteLine($"Published telemetry message to twin with Id {twinId}. Response status: {publishTelemetryResponse.Status}");
#endregion Snippet:DigitalTwinsSamplePublishTelemetry
#region Snippet:DigitalTwinsSamplePublishComponentTelemetry
// construct your json telemetry payload by serializing a dictionary.
var telemetryPayload = new Dictionary <string, int>
{
{ "ComponentTelemetry1", 9 }
};
Response publishTelemetryToComponentResponse = await client.PublishComponentTelemetryAsync(
twinId,
"Component1",
JsonSerializer.Serialize(telemetryPayload));
Console.WriteLine($"Published component telemetry message to twin with Id {twinId}. Response status: {publishTelemetryToComponentResponse.Status}");
#endregion Snippet:DigitalTwinsSamplePublishComponentTelemetry
}
catch (Exception ex)
{
FatalError($"Failed to publish a telemetry message due to {ex.Message}");
}
try
{
// Delete the twin.
await client.DeleteDigitalTwinAsync(twinId);
// Delete the models.
await client.DeleteModelAsync(modelId);
await client.DeleteModelAsync(componentModelId);
}
catch (RequestFailedException ex) when(ex.Status == (int)HttpStatusCode.NotFound)
{
// Digital twin or models do not exist.
}
catch (RequestFailedException ex)
{
FatalError($"Failed to delete due to {ex.Message}");
}
}
public async Task Component_UpdateComponentSucceedsWhenIfMatchHeaderIsCorrect()
{
// arrange
DigitalTwinsClient client = GetClient();
string wifiModelId = await GetUniqueModelIdAsync(client, TestAssetDefaults.WifiModelIdPrefix).ConfigureAwait(false);
string roomWithWifiModelId = await GetUniqueModelIdAsync(client, TestAssetDefaults.RoomWithWifiModelIdPrefix).ConfigureAwait(false);
string roomWithWifiTwinId = await GetUniqueTwinIdAsync(client, TestAssetDefaults.RoomWithWifiTwinIdPrefix).ConfigureAwait(false);
string wifiComponentName = "wifiAccessPoint";
try
{
// CREATE
// create roomWithWifi model
string wifiModel = TestAssetsHelper.GetWifiModelPayload(wifiModelId);
// create wifi model
string roomWithWifiModel = TestAssetsHelper.GetRoomWithWifiModelPayload(roomWithWifiModelId, wifiModelId, wifiComponentName);
await client.CreateModelsAsync(new List <string> {
roomWithWifiModel, wifiModel
}).ConfigureAwait(false);
// create room digital twin
BasicDigitalTwin roomWithWifiTwin = TestAssetsHelper.GetRoomWithWifiTwinPayload(roomWithWifiModelId, wifiComponentName);
await client.CreateOrReplaceDigitalTwinAsync <BasicDigitalTwin>(roomWithWifiTwinId, roomWithWifiTwin);
// Get the component
Response <object> getComponentResponse = await client
.GetComponentAsync <object>(
roomWithWifiTwinId,
wifiComponentName)
.ConfigureAwait(false);
// Patch component
JsonPatchDocument componentUpdatePatchDocument = new JsonPatchDocument();
componentUpdatePatchDocument.AppendReplace("/Network", "New Network");
Response updateComponentResponse = await client
.UpdateComponentAsync(
roomWithWifiTwinId,
wifiComponentName,
componentUpdatePatchDocument)
.ConfigureAwait(false);
// Get the latest ETag
ETag?etagBeforeUpdate = (await client.GetDigitalTwinAsync <BasicDigitalTwin>(roomWithWifiTwinId)).Value.ETag;
Assert.IsNotNull(etagBeforeUpdate);
// Patch component again, but with the now out of date ETag
JsonPatchDocument secondComponentUpdatePatchDocument = new JsonPatchDocument();
componentUpdatePatchDocument.AppendReplace("/Network", "Even newer Network");
try
{
await client
.UpdateComponentAsync(
roomWithWifiTwinId,
wifiComponentName,
secondComponentUpdatePatchDocument,
etagBeforeUpdate)
.ConfigureAwait(false);
}
catch (RequestFailedException ex) when(ex.Status == (int)HttpStatusCode.PreconditionFailed)
{
throw new AssertionException("UpdateComponent should not have thrown PreconditionFailed because the ETag was up to date", ex);
}
}
finally
{
// clean up
try
{
if (!string.IsNullOrWhiteSpace(roomWithWifiTwinId))
{
await client.DeleteDigitalTwinAsync(roomWithWifiTwinId).ConfigureAwait(false);
}
if (!string.IsNullOrWhiteSpace(roomWithWifiModelId))
{
await client.DeleteModelAsync(roomWithWifiModelId).ConfigureAwait(false);
}
if (!string.IsNullOrWhiteSpace(wifiModelId))
{
await client.DeleteModelAsync(wifiModelId).ConfigureAwait(false);
}
}
catch (Exception ex)
{
Assert.Fail($"Test clean up failed: {ex.Message}");
}
}
}
public async Task Relationships_PaginationWorks()
{
DigitalTwinsClient client = GetClient();
string floorModelId = await GetUniqueModelIdAsync(client, TestAssetDefaults.FloorModelIdPrefix).ConfigureAwait(false);
string roomModelId = await GetUniqueModelIdAsync(client, TestAssetDefaults.RoomModelIdPrefix).ConfigureAwait(false);
string hvacModelId = await GetUniqueTwinIdAsync(client, TestAssetDefaults.HvacModelIdPrefix).ConfigureAwait(false);
string floorTwinId = await GetUniqueTwinIdAsync(client, TestAssetDefaults.FloorTwinIdPrefix).ConfigureAwait(false);
string roomTwinId = await GetUniqueTwinIdAsync(client, TestAssetDefaults.RoomTwinIdPrefix).ConfigureAwait(false);
string hvacTwinId = await GetUniqueTwinIdAsync(client, TestAssetDefaults.HvacTwinIdPrefix).ConfigureAwait(false);
try
{
// create floor, room and hvac model
string floorModel = TestAssetsHelper.GetFloorModelPayload(floorModelId, roomModelId, hvacModelId);
string roomModel = TestAssetsHelper.GetRoomModelPayload(roomModelId, floorModelId);
string hvacModel = TestAssetsHelper.GetHvacModelPayload(hvacModelId, floorModelId);
await client.CreateModelsAsync(new List <string> {
floorModel, roomModel, hvacModel
}).ConfigureAwait(false);
// create floor twin
BasicDigitalTwin floorTwin = TestAssetsHelper.GetFloorTwinPayload(floorModelId);
await client.CreateDigitalTwinAsync <BasicDigitalTwin>(floorTwinId, floorTwin).ConfigureAwait(false);
// Create room twin
BasicDigitalTwin roomTwin = TestAssetsHelper.GetRoomTwinPayload(roomModelId);
await client.CreateDigitalTwinAsync <BasicDigitalTwin>(roomTwinId, roomTwin).ConfigureAwait(false);
BasicRelationship floorContainsRoomPayload = TestAssetsHelper.GetRelationshipWithPropertyPayload(roomTwinId, ContainsRelationship, "isAccessRestricted", true);
BasicRelationship floorTwinContainedInRelationshipPayload = TestAssetsHelper.GetRelationshipPayload(floorTwinId, ContainedInRelationship);
// For the sake of test simplicity, we'll just add multiple relationships from the same floor to the same room.
for (int i = 0; i < bulkRelationshipCount; i++)
{
var floorContainsRoomRelationshipId = $"FloorToRoomRelationship-{GetRandom()}";
// create Relationship from Floor -> Room
await client
.CreateRelationshipAsync <BasicRelationship>(
floorTwinId,
floorContainsRoomRelationshipId,
floorContainsRoomPayload)
.ConfigureAwait(false);
}
// For the sake of test simplicity, we'll just add multiple relationships from the same room to the same floor.
for (int i = 0; i < bulkRelationshipCount; i++)
{
var roomContainedInFloorRelationshipId = $"RoomToFloorRelationship-{GetRandom()}";
// create Relationship from Room -> Floor
await client
.CreateRelationshipAsync <BasicRelationship>(
roomTwinId,
roomContainedInFloorRelationshipId,
floorTwinContainedInRelationshipPayload)
.ConfigureAwait(false);
}
// LIST incoming relationships by page
AsyncPageable <IncomingRelationship> incomingRelationships = client.GetIncomingRelationshipsAsync(floorTwinId);
int incomingRelationshipPageCount = 0;
await foreach (Page <IncomingRelationship> incomingRelationshipPage in incomingRelationships.AsPages())
{
incomingRelationshipPageCount++;
if (incomingRelationshipPage.ContinuationToken != null)
{
incomingRelationshipPage.Values.Count.Should().Be(defaultRelationshipPageSize, "Unexpected page size for a non-terminal page");
}
}
incomingRelationshipPageCount.Should().BeGreaterThan(1, "Expected more than one page of incoming relationships");
// LIST outgoing relationships by page
AsyncPageable <string> outgoingRelationships = client.GetRelationshipsAsync(floorTwinId);
int outgoingRelationshipPageCount = 0;
await foreach (Page <string> outgoingRelationshipPage in outgoingRelationships.AsPages())
{
outgoingRelationshipPageCount++;
if (outgoingRelationshipPage.ContinuationToken != null)
{
outgoingRelationshipPage.Values.Count.Should().Be(defaultRelationshipPageSize, "Unexpected page size for a non-terminal page");
}
}
outgoingRelationshipPageCount.Should().BeGreaterThan(1, "Expected more than one page of outgoing relationships");
}
finally
{
// clean up
try
{
await Task
.WhenAll(
client.DeleteDigitalTwinAsync(floorTwinId),
client.DeleteDigitalTwinAsync(roomTwinId),
client.DeleteDigitalTwinAsync(hvacTwinId),
client.DeleteModelAsync(hvacModelId),
client.DeleteModelAsync(floorModelId),
client.DeleteModelAsync(roomModelId))
.ConfigureAwait(false);
}
catch (Exception ex)
{
Assert.Fail($"Test clean up failed: {ex.Message}");
}
}
}
public async Task TestNewtonsoftObjectSerializerWithDigitalTwins()
{
DigitalTwinsClient defaultClient = GetClient();
string roomTwinId = await GetUniqueTwinIdAsync(defaultClient, TestAssetDefaults.RoomTwinIdPrefix).ConfigureAwait(false);
string floorModelId = await GetUniqueModelIdAsync(defaultClient, TestAssetDefaults.FloorModelIdPrefix).ConfigureAwait(false);
string roomModelId = await GetUniqueModelIdAsync(defaultClient, TestAssetDefaults.RoomModelIdPrefix).ConfigureAwait(false);
try
{
// arrange
// create room model
string roomModel = TestAssetsHelper.GetRoomModelPayload(roomModelId, floorModelId);
await CreateAndListModelsAsync(defaultClient, new List <string> {
roomModel
}).ConfigureAwait(false);
// act
// create room twin
BasicDigitalTwin roomTwin = TestAssetsHelper.GetRoomTwinPayload(roomModelId);
await defaultClient.CreateOrReplaceDigitalTwinAsync <BasicDigitalTwin>(roomTwinId, roomTwin).ConfigureAwait(false);
// Create a client with NewtonsoftJsonObjectSerializer configured as the serializer.
DigitalTwinsClient testClient = GetClient(
new DigitalTwinsClientOptions
{
Serializer = new NewtonsoftJsonObjectSerializer()
});
// Get digital twin using the simple DigitalTwin model annotated with Newtonsoft attributes
SimpleNewtonsoftDtModel getResponse = await testClient.GetDigitalTwinAsync <SimpleNewtonsoftDtModel>(roomTwinId).ConfigureAwait(false);
getResponse.Id.Should().NotBeNullOrEmpty("Digital twin ID should not be null or empty");
// Query DigitalTwins using the simple DigitalTwin model annotated with Newtonsoft attributes
AsyncPageable <SimpleNewtonsoftDtModel> queryResponse = testClient.QueryAsync <SimpleNewtonsoftDtModel>("SELECT * FROM DIGITALTWINS");
await foreach (SimpleNewtonsoftDtModel twin in queryResponse)
{
twin.Id.Should().NotBeNullOrEmpty("Digital twin Id should not be null or empty");
}
}
finally
{
// cleanup
try
{
// delete twin
if (!string.IsNullOrWhiteSpace(roomTwinId))
{
await defaultClient.DeleteDigitalTwinAsync(roomTwinId).ConfigureAwait(false);
}
// delete models
if (!string.IsNullOrWhiteSpace(roomModelId))
{
await defaultClient.DeleteModelAsync(roomModelId).ConfigureAwait(false);
}
}
catch (Exception ex)
{
Assert.Fail($"Test clean up failed: {ex.Message}");
}
}
}
public async Task Query_PaginationWorks()
{
DigitalTwinsClient client = GetClient();
int pageSize = 5;
string floorModelId = await GetUniqueModelIdAsync(client, TestAssetDefaults.FloorModelIdPrefix).ConfigureAwait(false);
string roomModelId = await GetUniqueModelIdAsync(client, TestAssetDefaults.RoomModelIdPrefix).ConfigureAwait(false);
try
{
// Create room model
string roomModel = TestAssetsHelper.GetRoomModelPayload(roomModelId, floorModelId);
await client.CreateModelsAsync(new List <string> {
roomModel
}).ConfigureAwait(false);
// Create a room twin, with property "IsOccupied": true
string roomTwin = TestAssetsHelper.GetRoomTwinPayload(roomModelId);
for (int i = 0; i < pageSize + 1; i++)
{
string roomTwinId = await GetUniqueTwinIdAsync(client, TestAssetDefaults.RoomTwinIdPrefix).ConfigureAwait(false);
await client.CreateDigitalTwinAsync(roomTwinId, roomTwin).ConfigureAwait(false);
}
string queryString = "SELECT * FROM digitaltwins";
// act
var options = new QueryOptions();
options.MaxItemsPerPage = pageSize;
AsyncPageable <string> asyncPageableResponse = client.QueryAsync(queryString, options);
// assert
// Test that page size hint works, and that all returned pages either have the page size hint amount of
// elements, or have no continuation token (signaling that it is the last page)
int pageCount = 0;
await foreach (Page <string> page in asyncPageableResponse.AsPages())
{
pageCount++;
if (page.ContinuationToken != null)
{
page.Values.Count.Should().Be(pageSize, "Unexpected page size for a non-terminal page");
}
}
pageCount.Should().BeGreaterThan(1, "Expected more than one page of query results");
}
finally
{
// clean up
try
{
if (!string.IsNullOrWhiteSpace(roomModelId))
{
await client.DeleteModelAsync(roomModelId).ConfigureAwait(false);
}
}
catch (Exception ex)
{
Assert.Fail($"Test clean up failed: {ex.Message}");
}
}
}
public async Task Component_Lifecycle()
{
// arrange
DigitalTwinsClient client = GetClient();
string wifiModelId = await GetUniqueModelIdAsync(client, TestAssetDefaults.WifiModelIdPrefix).ConfigureAwait(false);
string roomWithWifiModelId = await GetUniqueModelIdAsync(client, TestAssetDefaults.RoomWithWifiModelIdPrefix).ConfigureAwait(false);
string roomWithWifiTwinId = await GetUniqueTwinIdAsync(client, TestAssetDefaults.RoomWithWifiTwinIdPrefix).ConfigureAwait(false);
string wifiComponentName = "wifiAccessPoint";
try
{
// CREATE
// create roomWithWifi model
string wifiModel = TestAssetsHelper.GetWifiModelPayload(wifiModelId);
// create wifi model
string roomWithWifiModel = TestAssetsHelper.GetRoomWithWifiModelPayload(roomWithWifiModelId, wifiModelId, wifiComponentName);
await CreateAndListModelsAsync(client, new List <string> {
roomWithWifiModel, wifiModel
}).ConfigureAwait(false);
// create room digital twin
BasicDigitalTwin roomWithWifiTwin = TestAssetsHelper.GetRoomWithWifiTwinPayload(roomWithWifiModelId, wifiComponentName);
await client.CreateOrReplaceDigitalTwinAsync <BasicDigitalTwin>(roomWithWifiTwinId, roomWithWifiTwin);
// Get the component
Response <object> getComponentResponse = await client
.GetComponentAsync <object>(
roomWithWifiTwinId,
wifiComponentName)
.ConfigureAwait(false);
// The response to the GET request should be 200 (OK)
getComponentResponse.GetRawResponse().Status.Should().Be((int)HttpStatusCode.OK);
// Patch component
JsonPatchDocument componentUpdatePatchDocument = new JsonPatchDocument();
componentUpdatePatchDocument.AppendReplace("/Network", "New Network");
Response updateComponentResponse = await client
.UpdateComponentAsync(
roomWithWifiTwinId,
wifiComponentName,
componentUpdatePatchDocument)
.ConfigureAwait(false);
// The response to the Patch request should be 204 (No content)
updateComponentResponse.Status.Should().Be((int)HttpStatusCode.NoContent);
}
catch (Exception ex)
{
Assert.Fail($"Failure in executing a step in the test case: {ex.Message}.");
}
finally
{
// clean up
try
{
if (!string.IsNullOrWhiteSpace(roomWithWifiTwinId))
{
await client.DeleteDigitalTwinAsync(roomWithWifiTwinId).ConfigureAwait(false);
}
if (!string.IsNullOrWhiteSpace(roomWithWifiModelId))
{
await client.DeleteModelAsync(roomWithWifiModelId).ConfigureAwait(false);
}
if (!string.IsNullOrWhiteSpace(wifiModelId))
{
await client.DeleteModelAsync(wifiModelId).ConfigureAwait(false);
}
}
catch (Exception ex)
{
Assert.Fail($"Test clean up failed: {ex.Message}");
}
}
}
public async Task Query_ValidQuery_Success()
{
DigitalTwinsClient client = GetClient();
string floorModelId = await GetUniqueModelIdAsync(client, TestAssetDefaults.FloorModelIdPrefix).ConfigureAwait(false);
string roomModelId = await GetUniqueModelIdAsync(client, TestAssetDefaults.RoomModelIdPrefix).ConfigureAwait(false);
try
{
// arrange
// Create room model
string roomModel = TestAssetsHelper.GetRoomModelPayload(roomModelId, floorModelId);
await CreateAndListModelsAsync(client, new List <string> {
roomModel
}).ConfigureAwait(false);
// Create a room twin, with property "IsOccupied": true
string roomTwinId = await GetUniqueTwinIdAsync(client, TestAssetDefaults.RoomTwinIdPrefix).ConfigureAwait(false);
BasicDigitalTwin roomTwin = TestAssetsHelper.GetRoomTwinPayload(roomModelId);
await client.CreateOrReplaceDigitalTwinAsync(roomTwinId, roomTwin).ConfigureAwait(false);
// Construct a query string to find the twins with the EXACT model id and provided version. If EXACT is not specified, the query
// call will get all twins with the same model id but that implement any version higher than the provided version
string queryString = $"SELECT * FROM digitaltwins WHERE IS_OF_MODEL('{roomModelId}', EXACT) AND IsOccupied = true";
// act
AsyncPageable <BasicDigitalTwin> asyncPageableResponse = client.QueryAsync <BasicDigitalTwin>(queryString);
// assert
// It takes a few seconds for the service to be able to fetch digital twins through queries after being created. Hence, adding the retry logic
var digitalTwinFound = false;
await TestRetryHelper.RetryAsync <AsyncPageable <BasicDigitalTwin> >(async() =>
{
await foreach (BasicDigitalTwin response in asyncPageableResponse)
{
digitalTwinFound = true;
bool isOccupied = ((JsonElement)response.Contents["IsOccupied"]).GetBoolean();
isOccupied.Should().BeTrue();
break;
}
if (!digitalTwinFound)
{
throw new Exception($"Digital twin based on model Id {roomModelId} not found");
}
return(null);
}, s_retryCount, s_retryDelay);
digitalTwinFound.Should().BeTrue();
}
catch (Exception ex)
{
Assert.Fail($"Failure in executing a step in the test case: {ex.Message}.");
}
finally
{
// clean up
try
{
if (!string.IsNullOrWhiteSpace(roomModelId))
{
await client.DeleteModelAsync(roomModelId).ConfigureAwait(false);
}
}
catch (Exception ex)
{
Assert.Fail($"Test clean up failed: {ex.Message}");
}
}
}
public async Task DigitalTwins_PatchTwinFailsIfInvalidETagProvided()
{
DigitalTwinsClient client = GetClient();
string roomTwinId = await GetUniqueTwinIdAsync(client, TestAssetDefaults.RoomTwinIdPrefix).ConfigureAwait(false);
string floorModelId = await GetUniqueModelIdAsync(client, TestAssetDefaults.FloorModelIdPrefix).ConfigureAwait(false);
string roomModelId = await GetUniqueModelIdAsync(client, TestAssetDefaults.RoomModelIdPrefix).ConfigureAwait(false);
try
{
// arrange
// create room model
string roomModel = TestAssetsHelper.GetRoomModelPayload(roomModelId, floorModelId);
await client.CreateModelsAsync(new List <string> {
roomModel
}).ConfigureAwait(false);
// act
// create room twin
BasicDigitalTwin roomTwin = TestAssetsHelper.GetRoomTwinPayload(roomModelId);
await client.CreateOrReplaceDigitalTwinAsync <BasicDigitalTwin>(roomTwinId, roomTwin).ConfigureAwait(false);
// get twin
ETag?etagBeforeUpdate = (await client.GetDigitalTwinAsync <BasicDigitalTwin>(roomTwinId).ConfigureAwait(false)).Value.ETag;
Assert.IsNotNull(etagBeforeUpdate);
// update twin once to make the previous etag fall out of date
JsonPatchDocument updateTwinPatchDocument = new JsonPatchDocument();
updateTwinPatchDocument.AppendAdd("/Humidity", 30);
updateTwinPatchDocument.AppendReplace("/Temperature", 70);
updateTwinPatchDocument.AppendRemove("/EmployeeId");
await client.UpdateDigitalTwinAsync(roomTwinId, updateTwinPatchDocument, ETag.All).ConfigureAwait(false);
// update twin again, but with an out of date etag, which should cause a 412 from service
JsonPatchDocument secondUpdateTwinPatchDocument = new JsonPatchDocument();
secondUpdateTwinPatchDocument.AppendReplace("/Humidity", 80);
Func <Task> act = async() =>
{
await client.UpdateDigitalTwinAsync(roomTwinId, secondUpdateTwinPatchDocument, etagBeforeUpdate).ConfigureAwait(false);
};
act.Should().Throw <RequestFailedException>()
.And.Status.Should().Be((int)HttpStatusCode.PreconditionFailed);
}
finally
{
// cleanup
try
{
if (!string.IsNullOrWhiteSpace(roomModelId))
{
await client.DeleteModelAsync(roomModelId).ConfigureAwait(false);
}
}
catch (Exception ex)
{
Assert.Fail($"Test clean up failed: {ex.Message}");
}
}
}
/// <summary>
/// Creates a digital twin with Component and upates Component
/// </summary>
public async Task RunSamplesAsync(DigitalTwinsClient client)
{
PrintHeader("COMPONENT SAMPLE");
// For the purpose of this example we will create temporary models using a random model Ids.
// We have to make sure these model Ids are unique within the DT instance.
string componentModelId = await GetUniqueModelIdAsync(SamplesConstants.TemporaryComponentModelPrefix, client);
string modelId = await GetUniqueModelIdAsync(SamplesConstants.TemporaryModelPrefix, client);
string basicDtId = await GetUniqueTwinIdAsync(SamplesConstants.TemporaryTwinPrefix, client);
string newComponentModelPayload = SamplesConstants.TemporaryComponentModelPayload
.Replace(SamplesConstants.ComponentId, componentModelId);
string newModelPayload = SamplesConstants.TemporaryModelWithComponentPayload
.Replace(SamplesConstants.ModelId, modelId)
.Replace(SamplesConstants.ComponentId, componentModelId);
// Then we create models
await client.CreateModelsAsync(
new[]
{
newComponentModelPayload,
newModelPayload
});
Console.WriteLine($"Created models {componentModelId} and {modelId}.");
#region Snippet:DigitalTwinsSampleCreateBasicTwin
// Create digital twin with component payload using the BasicDigitalTwin serialization helper
var basicTwin = new BasicDigitalTwin
{
Id = basicDtId,
// model Id of digital twin
Metadata = { ModelId = modelId },
Contents =
{
// digital twin properties
{ "Prop1", "Value1" },
{ "Prop2", 987 },
// component
{
"Component1",
new BasicDigitalTwinComponent
{
// component properties
Contents =
{
{ "ComponentProp1", "Component value 1" },
{ "ComponentProp2", 123 },
},
}
},
},
};
Response <BasicDigitalTwin> createDigitalTwinResponse = await client.CreateOrReplaceDigitalTwinAsync(basicDtId, basicTwin);
Console.WriteLine($"Created digital twin '{createDigitalTwinResponse.Value.Id}'.");
#endregion Snippet:DigitalTwinsSampleCreateBasicTwin
// You can also get a digital twin as a BasicDigitalTwin type.
// It works well for basic stuff, but as you can see it gets more difficult when delving into
// more complex properties, like components.
#region Snippet:DigitalTwinsSampleGetBasicDigitalTwin
Response <BasicDigitalTwin> getBasicDtResponse = await client.GetDigitalTwinAsync <BasicDigitalTwin>(basicDtId);
if (getBasicDtResponse.GetRawResponse().Status == (int)HttpStatusCode.OK)
{
BasicDigitalTwin basicDt = getBasicDtResponse.Value;
// Must cast Component1 as a JsonElement and get its raw text in order to deserialize it as a dictionary
string component1RawText = ((JsonElement)basicDt.Contents["Component1"]).GetRawText();
IDictionary <string, object> component1 = JsonSerializer.Deserialize <IDictionary <string, object> >(component1RawText);
Console.WriteLine($"Retrieved and deserialized digital twin {basicDt.Id}:\n\t" +
$"ETag: {basicDt.ETag}\n\t" +
$"Prop1: {basicDt.Contents["Prop1"]}\n\t" +
$"Prop2: {basicDt.Contents["Prop2"]}\n\t" +
$"ComponentProp1: {component1["ComponentProp1"]}\n\t" +
$"ComponentProp2: {component1["ComponentProp2"]}");
}
#endregion Snippet:DigitalTwinsSampleGetBasicDigitalTwin
string customDtId = await GetUniqueTwinIdAsync(SamplesConstants.TemporaryTwinPrefix, client);
// Alternatively, you can create your own custom data types to serialize and deserialize your digital twins.
// By specifying your properties and types directly, it requires less code or knowledge of the type for
// interaction.
#region Snippet:DigitalTwinsSampleCreateCustomTwin
var customTwin = new CustomDigitalTwin
{
Id = customDtId,
Metadata = { ModelId = modelId },
Prop1 = "Prop1 val",
Prop2 = 987,
Component1 = new MyCustomComponent
{
ComponentProp1 = "Component prop1 val",
ComponentProp2 = 123,
},
};
Response <CustomDigitalTwin> createCustomDigitalTwinResponse = await client.CreateOrReplaceDigitalTwinAsync(customDtId, customTwin);
Console.WriteLine($"Created digital twin '{createCustomDigitalTwinResponse.Value.Id}'.");
#endregion Snippet:DigitalTwinsSampleCreateCustomTwin
// Getting a digital twin as a custom data type is extremely easy.
// Custom types provide the best possible experience.
#region Snippet:DigitalTwinsSampleGetCustomDigitalTwin
Response <CustomDigitalTwin> getCustomDtResponse = await client.GetDigitalTwinAsync <CustomDigitalTwin>(customDtId);
CustomDigitalTwin customDt = getCustomDtResponse.Value;
Console.WriteLine($"Retrieved and deserialized digital twin {customDt.Id}:\n\t" +
$"ETag: {customDt.ETag}\n\t" +
$"Prop1: {customDt.Prop1}\n\t" +
$"Prop2: {customDt.Prop2}\n\t" +
$"ComponentProp1: {customDt.Component1.ComponentProp1}\n\t" +
$"ComponentProp2: {customDt.Component1.ComponentProp2}");
#endregion Snippet:DigitalTwinsSampleGetCustomDigitalTwin
#region Snippet:DigitalTwinsSampleUpdateComponent
// Update Component1 by replacing the property ComponentProp1 value,
// using an optional utility to build the payload.
var componentJsonPatchDocument = new JsonPatchDocument();
componentJsonPatchDocument.AppendReplace("/ComponentProp1", "Some new value");
await client.UpdateComponentAsync(basicDtId, "Component1", componentJsonPatchDocument);
Console.WriteLine($"Updated component for digital twin '{basicDtId}'.");
#endregion Snippet:DigitalTwinsSampleUpdateComponent
// Get Component
#region Snippet:DigitalTwinsSampleGetComponent
await client.GetComponentAsync <MyCustomComponent>(basicDtId, SamplesConstants.ComponentName);
Console.WriteLine($"Retrieved component for digital twin '{basicDtId}'.");
#endregion Snippet:DigitalTwinsSampleGetComponent
// Clean up
try
{
await client.DeleteDigitalTwinAsync(basicDtId);
await client.DeleteDigitalTwinAsync(customDtId);
}
catch (RequestFailedException ex)
{
Console.WriteLine($"Failed to delete digital twin due to {ex}");
}
try
{
await client.DeleteModelAsync(modelId);
await client.DeleteModelAsync(componentModelId);
}
catch (RequestFailedException ex)
{
Console.WriteLine($"Failed to delete models due to {ex}");
}
}
public async Task DigitalTwins_DeleteTwinFailsIfMatchProvidesOutdatedEtag()
{
DigitalTwinsClient client = GetClient();
string roomTwinId = await GetUniqueTwinIdAsync(client, TestAssetDefaults.RoomTwinIdPrefix).ConfigureAwait(false);
string floorModelId = await GetUniqueModelIdAsync(client, TestAssetDefaults.FloorModelIdPrefix).ConfigureAwait(false);
string roomModelId = await GetUniqueModelIdAsync(client, TestAssetDefaults.RoomModelIdPrefix).ConfigureAwait(false);
try
{
// arrange
// create room model
string roomModel = TestAssetsHelper.GetRoomModelPayload(roomModelId, floorModelId);
await client.CreateModelsAsync(new List <string> {
roomModel
}).ConfigureAwait(false);
// act
// create room twin
BasicDigitalTwin roomTwin = TestAssetsHelper.GetRoomTwinPayload(roomModelId);
await client.CreateOrReplaceDigitalTwinAsync <BasicDigitalTwin>(roomTwinId, roomTwin).ConfigureAwait(false);
// get twin
ETag?etagBeforeUpdate = (await client.GetDigitalTwinAsync <BasicDigitalTwin>(roomTwinId).ConfigureAwait(false)).Value.ETag;
// update twin
JsonPatchDocument updateTwinPatchDocument = new JsonPatchDocument();
updateTwinPatchDocument.AppendAdd("/Humidity", 30);
updateTwinPatchDocument.AppendReplace("/Temperature", 70);
updateTwinPatchDocument.AppendRemove("/EmployeeId");
await client.UpdateDigitalTwinAsync(roomTwinId, updateTwinPatchDocument, ETag.All).ConfigureAwait(false);
// assert
Func <Task> act = async() =>
{
// since the ETag is out of date, this call should throw a 412
await client.DeleteDigitalTwinAsync(roomTwinId, etagBeforeUpdate).ConfigureAwait(false);
};
act.Should().Throw <RequestFailedException>()
.And.Status.Should().Be((int)HttpStatusCode.PreconditionFailed);
}
finally
{
// cleanup
try
{
if (!string.IsNullOrWhiteSpace(roomModelId))
{
await client.DeleteModelAsync(roomModelId).ConfigureAwait(false);
}
}
catch (Exception ex)
{
Assert.Fail($"Test clean up failed: {ex.Message}");
}
}
}
/// <summary>
/// Create a temporary component model, twin model and digital twin instance.
/// Publish a telemetry message and a component telemetry message to the digital twin instance.
/// </summary>
public async Task RunSamplesAsync(DigitalTwinsClient client)
{
PrintHeader("PUBLISH TELEMETRY MESSAGE SAMPLE");
// For the purpose of this example we will create temporary models using a random model Ids.
// We will also create temporary twin instances to publish the telemetry to.
string componentModelId = await GetUniqueModelIdAsync(SamplesConstants.TemporaryComponentModelPrefix, client);
string modelId = await GetUniqueModelIdAsync(SamplesConstants.TemporaryModelPrefix, client);
string twinId = await GetUniqueTwinIdAsync(SamplesConstants.TemporaryTwinPrefix, client);
string newComponentModelPayload = SamplesConstants.TemporaryComponentModelPayload
.Replace(SamplesConstants.ComponentId, componentModelId);
string newModelPayload = SamplesConstants.TemporaryModelWithComponentPayload
.Replace(SamplesConstants.ModelId, modelId)
.Replace(SamplesConstants.ComponentId, componentModelId);
// Then we create the models.
await client
.CreateModelsAsync(new[] { newComponentModelPayload, newModelPayload });
// Get the models we just created
AsyncPageable <DigitalTwinsModelData> models = client.GetModelsAsync();
await foreach (DigitalTwinsModelData model in models)
{
Console.WriteLine($"Successfully created model '{model.Id}'");
}
// Create digital twin with Component payload.
string twinPayload = SamplesConstants.TemporaryTwinPayload
.Replace(SamplesConstants.ModelId, modelId);
BasicDigitalTwin basicDigitalTwin = JsonSerializer.Deserialize <BasicDigitalTwin>(twinPayload);
Response <BasicDigitalTwin> createDigitalTwinResponse = await client.CreateOrReplaceDigitalTwinAsync <BasicDigitalTwin>(twinId, basicDigitalTwin);
Console.WriteLine($"Created digital twin '{createDigitalTwinResponse.Value.Id}'.");
try
{
#region Snippet:DigitalTwinsSamplePublishTelemetry
// construct your json telemetry payload by hand.
await client.PublishTelemetryAsync(twinId, Guid.NewGuid().ToString(), "{\"Telemetry1\": 5}");
Console.WriteLine($"Published telemetry message to twin '{twinId}'.");
#endregion Snippet:DigitalTwinsSamplePublishTelemetry
#region Snippet:DigitalTwinsSamplePublishComponentTelemetry
// construct your json telemetry payload by serializing a dictionary.
var telemetryPayload = new Dictionary <string, int>
{
{ "ComponentTelemetry1", 9 }
};
await client.PublishComponentTelemetryAsync(
twinId,
"Component1",
Guid.NewGuid().ToString(),
JsonSerializer.Serialize(telemetryPayload));
Console.WriteLine($"Published component telemetry message to twin '{twinId}'.");
#endregion Snippet:DigitalTwinsSamplePublishComponentTelemetry
}
catch (Exception ex)
{
FatalError($"Failed to publish a telemetry message due to: {ex.Message}");
}
try
{
// Delete the twin.
await client.DeleteDigitalTwinAsync(twinId);
// Delete the models.
await client.DeleteModelAsync(modelId);
await client.DeleteModelAsync(componentModelId);
}
catch (RequestFailedException ex) when(ex.Status == (int)HttpStatusCode.NotFound)
{
// Digital twin or models do not exist.
}
catch (RequestFailedException ex)
{
FatalError($"Failed to delete due to: {ex.Message}");
}
}
public async Task DigitalTwins_DeleteTwinSucceedsIfMatchProvidesCorrectEtag()
{
DigitalTwinsClient client = GetClient();
string roomTwinId = await GetUniqueTwinIdAsync(client, TestAssetDefaults.RoomTwinIdPrefix).ConfigureAwait(false);
string floorModelId = await GetUniqueModelIdAsync(client, TestAssetDefaults.FloorModelIdPrefix).ConfigureAwait(false);
string roomModelId = await GetUniqueModelIdAsync(client, TestAssetDefaults.RoomModelIdPrefix).ConfigureAwait(false);
try
{
// arrange
// create room model
string roomModel = TestAssetsHelper.GetRoomModelPayload(roomModelId, floorModelId);
await client.CreateModelsAsync(new List <string> {
roomModel
}).ConfigureAwait(false);
// act
// create room twin
BasicDigitalTwin roomTwin = TestAssetsHelper.GetRoomTwinPayload(roomModelId);
await client.CreateOrReplaceDigitalTwinAsync <BasicDigitalTwin>(roomTwinId, roomTwin).ConfigureAwait(false);
// update twin
JsonPatchDocument updateTwinPatchDocument = new JsonPatchDocument();
updateTwinPatchDocument.AppendAdd("/Humidity", 30);
updateTwinPatchDocument.AppendReplace("/Temperature", 70);
updateTwinPatchDocument.AppendRemove("/EmployeeId");
await client.UpdateDigitalTwinAsync(roomTwinId, updateTwinPatchDocument, ETag.All).ConfigureAwait(false);
// get twin
ETag?correctETag = (await client.GetDigitalTwinAsync <BasicDigitalTwin>(roomTwinId).ConfigureAwait(false)).Value.ETag;
Assert.IsNotNull(correctETag);
try
{
// since the ETag is not out of date, this call should not throw a 412
await client.DeleteDigitalTwinAsync(roomTwinId, correctETag).ConfigureAwait(false);
}
catch (RequestFailedException ex) when(ex.Status == (int)HttpStatusCode.PreconditionFailed)
{
throw new AssertionException("UpdateRelationship should not have thrown PreconditionFailed because the ETag was up to date", ex);
}
}
finally
{
// cleanup
try
{
if (!string.IsNullOrWhiteSpace(roomModelId))
{
await client.DeleteModelAsync(roomModelId).ConfigureAwait(false);
}
}
catch (Exception ex)
{
Assert.Fail($"Test clean up failed: {ex.Message}");
}
}
}
/// <summary>
/// Creates two digital twins, and connect them with relationships.
/// </summary>
public async Task RunSamplesAsync(DigitalTwinsClient client)
{
// For the purpose of keeping code snippets readable to the user, hardcoded string literals are used in place of assigned variables, eg Ids.
// Despite not being a good code practice, this prevents code snippets from being out of context for the user when making API calls that accept Ids as parameters.
PrintHeader("RELATIONSHIP SAMPLE");
string sampleBuildingModelId = "dtmi:com:samples:SampleBuilding;1";
string sampleFloorModelId = "dtmi:com:samples:SampleFloor;1";
await ModelLifecycleSamples.TryDeleteModelAsync(client, sampleBuildingModelId);
await ModelLifecycleSamples.TryDeleteModelAsync(client, sampleFloorModelId);
// Create a building digital twin model.
string buildingModelPayload = SamplesConstants.TemporaryModelWithRelationshipPayload
.Replace(SamplesConstants.RelationshipTargetModelId, sampleFloorModelId)
.Replace(SamplesConstants.ModelId, sampleBuildingModelId)
.Replace(SamplesConstants.ModelDisplayName, "Building")
.Replace(SamplesConstants.RelationshipName, "contains");
await client.CreateModelsAsync(
new[]
{
buildingModelPayload
});
Console.WriteLine($"Created model '{sampleBuildingModelId}'.");
// Create a floor digital twin model.
string floorModelPayload = SamplesConstants.TemporaryModelWithRelationshipPayload
.Replace(SamplesConstants.RelationshipTargetModelId, sampleBuildingModelId)
.Replace(SamplesConstants.ModelId, sampleFloorModelId)
.Replace(SamplesConstants.ModelDisplayName, "Floor")
.Replace(SamplesConstants.RelationshipName, "containedIn");
await client.CreateModelsAsync(new[] { floorModelPayload });
// Get the model we just created
Response <DigitalTwinsModelData> getFloorModelResponse = await client.GetModelAsync(sampleFloorModelId).ConfigureAwait(false);
Console.WriteLine($"Created model '{getFloorModelResponse.Value.Id}'");
// Create a building digital twin.
var buildingDigitalTwin = new BasicDigitalTwin
{
Id = "buildingTwinId",
Metadata = { ModelId = sampleBuildingModelId }
};
Response <BasicDigitalTwin> createDigitalTwinResponse = await client.CreateOrReplaceDigitalTwinAsync <BasicDigitalTwin>("buildingTwinId", buildingDigitalTwin);
Console.WriteLine($"Created twin '{createDigitalTwinResponse.Value.Id}'.");
// Create a floor digital.
var floorDigitalTwin = new BasicDigitalTwin
{
Id = "floorTwinId",
Metadata = { ModelId = sampleFloorModelId }
};
Response <BasicDigitalTwin> createFloorDigitalTwinResponse = await client.CreateOrReplaceDigitalTwinAsync <BasicDigitalTwin>("floorTwinId", floorDigitalTwin);
Console.WriteLine($"Created twin '{createFloorDigitalTwinResponse.Value.Id}'.");
// Create a relationship between building and floor using the BasicRelationship serialization helper.
#region Snippet:DigitalTwinsSampleCreateBasicRelationship
var buildingFloorRelationshipPayload = new BasicRelationship
{
Id = "buildingFloorRelationshipId",
SourceId = "buildingTwinId",
TargetId = "floorTwinId",
Name = "contains",
Properties =
{
{ "Prop1", "Prop1 value" },
{ "Prop2", 6 }
}
};
Response <BasicRelationship> createBuildingFloorRelationshipResponse = await client
.CreateOrReplaceRelationshipAsync <BasicRelationship>("buildingTwinId", "buildingFloorRelationshipId", buildingFloorRelationshipPayload);
Console.WriteLine($"Created a digital twin relationship '{createBuildingFloorRelationshipResponse.Value.Id}' " +
$"from twin '{createBuildingFloorRelationshipResponse.Value.SourceId}' to twin '{createBuildingFloorRelationshipResponse.Value.TargetId}'.");
#endregion Snippet:DigitalTwinsSampleCreateBasicRelationship
// You can get a relationship as a BasicRelationship type.
#region Snippet:DigitalTwinsSampleGetBasicRelationship
Response <BasicRelationship> getBasicRelationshipResponse = await client.GetRelationshipAsync <BasicRelationship>(
"buildingTwinId",
"buildingFloorRelationshipId");
if (getBasicRelationshipResponse.GetRawResponse().Status == (int)HttpStatusCode.OK)
{
BasicRelationship basicRelationship = getBasicRelationshipResponse.Value;
Console.WriteLine($"Retrieved relationship '{basicRelationship.Id}' from twin {basicRelationship.SourceId}.\n\t" +
$"Prop1: {basicRelationship.Properties["Prop1"]}\n\t" +
$"Prop2: {basicRelationship.Properties["Prop2"]}");
}
#endregion Snippet:DigitalTwinsSampleGetBasicRelationship
// Alternatively, you can create your own custom data types and use these types when calling into the APIs.
// This requires less code or knowledge of the type for interaction.
// Create a relationship between floorTwinId and buildingTwinId using a custom data type.
#region Snippet:DigitalTwinsSampleCreateCustomRelationship
var floorBuildingRelationshipPayload = new CustomRelationship
{
Id = "floorBuildingRelationshipId",
SourceId = "floorTwinId",
TargetId = "buildingTwinId",
Name = "containedIn",
Prop1 = "Prop1 val",
Prop2 = 4
};
Response <CustomRelationship> createCustomRelationshipResponse = await client
.CreateOrReplaceRelationshipAsync <CustomRelationship>("floorTwinId", "floorBuildingRelationshipId", floorBuildingRelationshipPayload);
Console.WriteLine($"Created a digital twin relationship '{createCustomRelationshipResponse.Value.Id}' " +
$"from twin '{createCustomRelationshipResponse.Value.SourceId}' to twin '{createCustomRelationshipResponse.Value.TargetId}'.");
#endregion Snippet:DigitalTwinsSampleCreateCustomRelationship
// Getting a relationship as a custom data type is extremely easy.
#region Snippet:DigitalTwinsSampleGetCustomRelationship
Response <CustomRelationship> getCustomRelationshipResponse = await client.GetRelationshipAsync <CustomRelationship>(
"floorTwinId",
"floorBuildingRelationshipId");
CustomRelationship getCustomRelationship = getCustomRelationshipResponse.Value;
Console.WriteLine($"Retrieved and deserialized relationship '{getCustomRelationship.Id}' from twin '{getCustomRelationship.SourceId}'.\n\t" +
$"Prop1: {getCustomRelationship.Prop1}\n\t" +
$"Prop2: {getCustomRelationship.Prop2}");
#endregion Snippet:DigitalTwinsSampleGetCustomRelationship
// Get all relationships in the graph where buildingTwinId is the source of the relationship.
#region Snippet:DigitalTwinsSampleGetAllRelationships
AsyncPageable <BasicRelationship> relationships = client.GetRelationshipsAsync <BasicRelationship>("buildingTwinId");
await foreach (BasicRelationship relationship in relationships)
{
Console.WriteLine($"Retrieved relationship '{relationship.Id}' with source {relationship.SourceId}' and " +
$"target {relationship.TargetId}.\n\t" +
$"Prop1: {relationship.Properties["Prop1"]}\n\t" +
$"Prop2: {relationship.Properties["Prop2"]}");
}
#endregion Snippet:DigitalTwinsSampleGetAllRelationships
// Get all incoming relationships in the graph where buildingTwinId is the target of the relationship.
#region Snippet:DigitalTwinsSampleGetIncomingRelationships
AsyncPageable <IncomingRelationship> incomingRelationships = client.GetIncomingRelationshipsAsync("buildingTwinId");
await foreach (IncomingRelationship incomingRelationship in incomingRelationships)
{
Console.WriteLine($"Found an incoming relationship '{incomingRelationship.RelationshipId}' from '{incomingRelationship.SourceId}'.");
}
#endregion Snippet:DigitalTwinsSampleGetIncomingRelationships
// Delete the contains relationship, created earlier in the sample code, from building to floor.
#region Snippet:DigitalTwinsSampleDeleteRelationship
await client.DeleteRelationshipAsync("buildingTwinId", "buildingFloorRelationshipId");
Console.WriteLine($"Deleted relationship 'buildingFloorRelationshipId'.");
#endregion Snippet:DigitalTwinsSampleDeleteRelationship
// Delete the containedIn relationship, created earlier in the sample code, from floor to building.
await client.DeleteRelationshipAsync("floorTwinId", "floorBuildingRelationshipId");
Console.WriteLine($"Deleted relationship 'floorBuildingRelationshipId'.");
// Clean up.
try
{
// Delete all twins
await client.DeleteDigitalTwinAsync("buildingTwinId");
await client.DeleteDigitalTwinAsync("floorTwinId");
}
catch (RequestFailedException ex)
{
Console.WriteLine($"Failed to delete twin due to {ex}.");
}
try
{
await client.DeleteModelAsync(sampleBuildingModelId);
await client.DeleteModelAsync(sampleFloorModelId);
}
catch (RequestFailedException ex)
{
Console.WriteLine($"Failed to delete model due to {ex}.");
}
}
public async Task DigitalTwins_PatchTwinSucceedsIfCorrectETagProvided()
{
DigitalTwinsClient client = GetClient();
string roomTwinId = await GetUniqueTwinIdAsync(client, TestAssetDefaults.RoomTwinIdPrefix).ConfigureAwait(false);
string floorModelId = await GetUniqueModelIdAsync(client, TestAssetDefaults.FloorModelIdPrefix).ConfigureAwait(false);
string roomModelId = await GetUniqueModelIdAsync(client, TestAssetDefaults.RoomModelIdPrefix).ConfigureAwait(false);
try
{
// arrange
// create room model
string roomModel = TestAssetsHelper.GetRoomModelPayload(roomModelId, floorModelId);
await CreateAndListModelsAsync(client, new List <string> {
roomModel
}).ConfigureAwait(false);
// act
// create room twin
BasicDigitalTwin roomTwin = TestAssetsHelper.GetRoomTwinPayload(roomModelId);
await client.CreateOrReplaceDigitalTwinAsync <BasicDigitalTwin>(roomTwinId, roomTwin).ConfigureAwait(false);
// update twin once
JsonPatchDocument updateTwinPatchDocument = new JsonPatchDocument();
updateTwinPatchDocument.AppendAdd("/Humidity", 30);
updateTwinPatchDocument.AppendReplace("/Temperature", 70);
updateTwinPatchDocument.AppendRemove("/EmployeeId");
await client.UpdateDigitalTwinAsync(roomTwinId, updateTwinPatchDocument, ETag.All).ConfigureAwait(false);
// get twin
ETag?etagBeforeUpdate = (await client.GetDigitalTwinAsync <BasicDigitalTwin>(roomTwinId).ConfigureAwait(false)).Value.ETag;
Assert.IsNotNull(etagBeforeUpdate);
// update twin again, but with the correct etag
JsonPatchDocument secondUpdateTwinPatchDocument = new JsonPatchDocument();
secondUpdateTwinPatchDocument.AppendReplace("/Humidity", 80);
try
{
await client.UpdateDigitalTwinAsync(roomTwinId, secondUpdateTwinPatchDocument, etagBeforeUpdate).ConfigureAwait(false);
}
catch (RequestFailedException ex) when(ex.Status == (int)HttpStatusCode.PreconditionFailed)
{
throw new AssertionException("UpdateDigitalTwin should not have thrown PreconditionFailed because the ETag was up to date", ex);
}
}
catch (Exception ex)
{
Assert.Fail($"Failure in executing a step in the test case: {ex.Message}.");
}
finally
{
// cleanup
try
{
if (!string.IsNullOrWhiteSpace(roomModelId))
{
await client.DeleteModelAsync(roomModelId).ConfigureAwait(false);
}
}
catch (Exception ex)
{
Assert.Fail($"Test clean up failed: {ex.Message}");
}
}
}
