private bool CollectionExists()
{
ListCollectionsRequest request = new ListCollectionsRequest();
ListCollectionsResponse response = Client.ListCollections(request);
return(response.CollectionIds.Contains(CollectionName));
}
// snippet-start:[Rekognition.dotnetv3.ListCollectionsExample]
public static async Task Main()
{
var rekognitionClient = new AmazonRekognitionClient();
Console.WriteLine("Listing collections");
int limit = 10;
var listCollectionsRequest = new ListCollectionsRequest
{
MaxResults = limit,
};
var listCollectionsResponse = new ListCollectionsResponse();
do
{
if (listCollectionsResponse is not null)
{
listCollectionsRequest.NextToken = listCollectionsResponse.NextToken;
}
listCollectionsResponse = await rekognitionClient.ListCollectionsAsync(listCollectionsRequest);
listCollectionsResponse.CollectionIds.ForEach(id =>
{
Console.WriteLine(id);
});
}while (listCollectionsResponse.NextToken is not null);
}
/// <summary>
/// Unmarshaller the response from the service to the response class.
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
public override AmazonWebServiceResponse Unmarshall(JsonUnmarshallerContext context)
{
ListCollectionsResponse response = new ListCollectionsResponse();
context.Read();
int targetDepth = context.CurrentDepth;
while (context.ReadAtDepth(targetDepth))
{
if (context.TestExpression("CollectionIds", targetDepth))
{
var unmarshaller = new ListUnmarshaller <string, StringUnmarshaller>(StringUnmarshaller.Instance);
response.CollectionIds = unmarshaller.Unmarshall(context);
continue;
}
if (context.TestExpression("FaceModelVersions", targetDepth))
{
var unmarshaller = new ListUnmarshaller <string, StringUnmarshaller>(StringUnmarshaller.Instance);
response.FaceModelVersions = unmarshaller.Unmarshall(context);
continue;
}
if (context.TestExpression("NextToken", targetDepth))
{
var unmarshaller = StringUnmarshaller.Instance;
response.NextToken = unmarshaller.Unmarshall(context);
continue;
}
}
return(response);
}
public ListCollectionsResponse ListCollections(string environmentId, string name = null)
{
if (string.IsNullOrEmpty(environmentId))
{
throw new ArgumentNullException(nameof(environmentId));
}
if (string.IsNullOrEmpty(VersionDate))
{
throw new ArgumentNullException("versionDate cannot be null. Use 'DISCOVERY_VERSION_DATE_2016_12_01'");
}
ListCollectionsResponse result = null;
try
{
result = this.Client.WithAuthentication(this.UserName, this.Password)
.GetAsync($"{this.Endpoint}/v1/environments/{environmentId}/collections")
.WithArgument("version", VersionDate)
.WithArgument("name", name)
.As <ListCollectionsResponse>()
.Result;
}
catch (AggregateException ae)
{
throw ae.Flatten();
}
return(result);
}
public static void Example()
{
AmazonRekognitionClient rekognitionClient = new AmazonRekognitionClient();
Console.WriteLine("Listing collections");
int limit = 10;
ListCollectionsResponse listCollectionsResponse = null;
String paginationToken = null;
do
{
if (listCollectionsResponse != null)
{
paginationToken = listCollectionsResponse.NextToken;
}
ListCollectionsRequest listCollectionsRequest = new ListCollectionsRequest()
{
MaxResults = limit,
NextToken = paginationToken
};
listCollectionsResponse = rekognitionClient.ListCollections(listCollectionsRequest);
foreach (String resultId in listCollectionsResponse.CollectionIds)
{
Console.WriteLine(resultId);
}
} while (listCollectionsResponse != null && listCollectionsResponse.NextToken != null);
}
public override void Invoke(AWSCredentials creds, RegionEndpoint region, int maxItems)
{
AmazonRekognitionConfig config = new AmazonRekognitionConfig();
config.RegionEndpoint = region;
ConfigureClient(config);
AmazonRekognitionClient client = new AmazonRekognitionClient(creds, config);
ListCollectionsResponse resp = new ListCollectionsResponse();
do
{
ListCollectionsRequest req = new ListCollectionsRequest
{
NextToken = resp.NextToken
,
MaxResults = maxItems
};
resp = client.ListCollections(req);
CheckError(resp.HttpStatusCode, "200");
foreach (var obj in resp.CollectionIds)
{
AddObject(obj);
}
}while (!string.IsNullOrEmpty(resp.NextToken));
}
public static string Collection(string collectionId)
{
try
{
var rekognitionClient = new AmazonRekognitionClient(RegionEndpoint.APSouth1);
Console.WriteLine("Creating collection: " + collectionId);
var createCollectionRequest = new CreateCollectionRequest()
{
CollectionId = collectionId
};
int limit = 10;
ListCollectionsResponse listCollectionsResponse = null;
String paginationToken = null;
if (listCollectionsResponse != null)
{
paginationToken = listCollectionsResponse.NextToken;
}
ListCollectionsRequest listCollectionsRequest = new ListCollectionsRequest()
{
MaxResults = limit,
NextToken = paginationToken
};
listCollectionsResponse = rekognitionClient.ListCollectionsAsync(listCollectionsRequest).Result;
foreach (var resultId in listCollectionsResponse.CollectionIds)
{
if (resultId == collectionId)
{
return("OK");
}
else
{
var createCollectionResponse =
rekognitionClient.CreateCollectionAsync(createCollectionRequest);
Console.WriteLine("CollectionArn : " + createCollectionResponse.Result.CollectionArn);
if (createCollectionResponse.Result.StatusCode == 200)
{
return("OK");
}
}
}
}
catch (Exception ex)
{
Console.WriteLine("Exception occurred" + ex);
return("");
}
return("");
}
public static List <String> GetFaceCollectionList()
{
List <String> _faceCollectionList = new List <string>();
_faceCollectionList.Clear();
using (rekognitionClient = new AmazonRekognitionClient(collectionRegion))
{
ListingCollections();
}
void ListingCollections()
{
try
{
int limit = 10;
ListCollectionsResponse listCollectionsResponse = null;
String paginationToken = null;
do
{
if (listCollectionsResponse != null)
{
paginationToken = listCollectionsResponse.NextToken;
}
ListCollectionsRequest listCollectionsRequest = new ListCollectionsRequest()
{
MaxResults = limit,
NextToken = paginationToken
};
listCollectionsResponse = rekognitionClient.ListCollections(listCollectionsRequest);
foreach (String resultId in listCollectionsResponse.CollectionIds)
{
_faceCollectionList.Add(resultId);
}
} while (listCollectionsResponse != null && listCollectionsResponse.NextToken != null);
}
catch (AmazonRekognitionException e)
{
Console.WriteLine("AmazonRekognitionException: " + e);
}
catch (Exception e)
{
Console.WriteLine("Error: " + e);
}
}
return(_faceCollectionList);
}
private async Task <List <string> > GetCollections(AmazonRekognitionClient rekognitionClient)
{
ListCollectionsResponse listCollectionsResponse = null;
ListCollectionsRequest listCollectionsRequest = new ListCollectionsRequest()
{
//MaxResults = limit, //declare a limit
//NextToken = paginationToken
};
listCollectionsResponse = await rekognitionClient.ListCollectionsAsync(listCollectionsRequest);
return(listCollectionsResponse.CollectionIds);
}
private IEnumerator ExampleListCollections()
{
Log.Debug("DiscoveryServiceV2", "ListCollections");
ListCollectionsResponse listCollectionsResponse = null;
service.ListCollections(
callback: (DetailedResponse <ListCollectionsResponse> response, IBMError error) =>
{
Log.Debug("DiscoveryServiceV2", "ListCollections result: {0}", response.Response);
listCollectionsResponse = response.Result;
},
projectId: "{project_id}"
);
while (listCollectionsResponse == null)
{
yield return(null);
}
}
public IEnumerator TestListCollections()
{
Log.Debug("DiscoveryServiceV2IntegrationTests", "Attempting to ListCollections...");
ListCollectionsResponse listCollectionsResponse = null;
service.ListCollections(
callback: (DetailedResponse <ListCollectionsResponse> response, IBMError error) =>
{
Log.Debug("DiscoveryServiceV2IntegrationTests", "ListCollections result: {0}", response.Response);
listCollectionsResponse = response.Result;
Assert.IsNotNull(listCollectionsResponse);
Assert.IsNotNull(listCollectionsResponse.Collections);
Assert.IsTrue(listCollectionsResponse.Collections.Count > 0);
Assert.IsNull(error);
},
projectId: projectId
);
while (listCollectionsResponse == null)
{
yield return(null);
}
}
