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Adding multiple event type to same kafka topic in .net

I am trying to add multiple schemas to the same subject in the schema registry, so I have set ValueSubjectNameStrategy to SubjectNameStrategy.TopicRecord, also set the register automatically to AutomaticRegistrationBehavior.Always. But while auto registering the schema it still using the SubjectNameStrategy.Topic strategy.
var schemaRegistryConfig = new SchemaRegistryConfig { Url = "http://localhost:8081", ValueSubjectNameStrategy = SubjectNameStrategy.TopicRecord };
var registry = new CachedSchemaRegistryClient(schemaRegistryConfig);
var builder = new ProducerBuilder<string, SplitLineKGN>(KafkaConfig.Producer.GetConfig(_config.GetSection("KafkaProducer")))
.SetAvroValueSerializer(registry, registerAutomatically: AutomaticRegistrationBehavior.Always)
.SetErrorHandler((_, error) => Console.Error.WriteLine(error.ToString()));
_producerMsg = builder.Build();
await _producerMsg.ProduceAsync("MyTopic", new Message<string, SampleMessage> { Key = key, Value = line });
how to auto register multiple schemas to a topic?

Ensure that you changed a subject naming strategy for a topic
SchemaRegistryConfig.ValueSubjectNameStrategy is deprecated, it should now be configured using the serializer's configuration: code
For producing multiple event types with a single producer you have to use AvroSerializer<ISpecificRecord> as described below:
var schemaRegistryConfig = new SchemaRegistryConfig { Url = "http://localhost:8081" };
using var schemaRegistryClient = new CachedSchemaRegistryClient(schemaRegistryConfig);
var avroSerializerConfig = new AvroSerializerConfig
{
SubjectNameStrategy = SubjectNameStrategy.TopicRecord,
AutoRegisterSchemas = true // (the default)
};
// Assuming this is your own custom code because the Confluent
// producer doesn't have anything like this.
var producerConfig = KafkaConfig.Producer.GetConfig(_config.GetSection("KafkaProducer"));
using var producer = new ProducerBuilder<string, ISpecificRecord>(producerConfig)
.SetValueSerializer(new AvroSerializer<ISpecificRecord>(schemaRegistryClient, avroSerializerConfig))
.SetErrorHandler((_, error) => Console.Error.WriteLine(error))
.Build();
var deliveryResult = await producer.ProduceAsync("MyTopic", new Message<string, ISpecificRecord>
{
Key = key,
Value = line
});
Console.WriteLine($"Delivered to: {deliveryResult.TopicPartitionOffset}");

What is the replacement for Microsoft.Azure.WebHosts.JobHostConfiguration

Trying to follow #matthoneycutt 's tutorial on Azure IoT Hub it seems like
Microsoft.Azure.WebHosts.JobHostConfiguration vanished between 3.0.0-beta5
and 3.0.0-rc1 releases of Microsoft.Azure.WebHosts.Host in the Microsoft.Azure.WebHosts nuget package?
What would be the approach to get this code up running in Microsoft.Azure.WebHosts 3.0.0-rc1?
var processorHost = new EventProcessorHost(hubName, consumerGroupName, iotHubConnectionString, storageConnectionString,storageContainerName);
processorHost.RegisterEventProcessorAsync<LoggingEventProcessor>().Wait();
var eventHubConfig = new EventHubConfiguration();
eventHubConfig.AddEventProcessorHost(hubName, processorHost);
var configuration = new JobHostConfiguration(storageConnectionString);
configuration.UseEventHub(eventHubConfig);
var host = new JobHost(configuration);
host.RunAndBlock();
Seems related to this post, though in a different context

You should be able to do that thru the AddEventHubs extension methods (available in Microsoft.Azure.WebJobs.Extensions.EventHubs package)
var builder = new HostBuilder()
.ConfigureWebJobs(b =>
{
b.AddAzureStorageCoreServices()
.AddAzureStorage()
.AddEventHubs(eventHubOptions => {
var hubName = "hubName";
var iotHubConnectionString = "iotHubConnectionString";
var storageContainerName = "storageContainerName";
var storageConnectionString = "storageConnectionString";
var consumerGroupName = "consumerGroupName";
var processorHost = new EventProcessorHost(hubName, consumerGroupName, iotHubConnectionString, storageConnectionString, storageContainerName);
eventHubOptions.AddEventProcessorHost("eventHubName", processorHost);
})

Consume and Configure Graphql request from .Net C# console application client

I'm trying to consume a Graphql Api from a C# client. For that I'm using the GraphQl.Net Nuget package. The problem is that, I have no idea how to set the Api Url as I don't have HttpRequest object and this results also with additional problems that I can't set the authentcation header and send the token with the request. My code looks like:
public void Post(TestGraphQl.GraphQLQuery query)
{
var inputs = query.Variables.ToInputs();
var queryToExecute = query.Query;
var result = _executer.ExecuteAsync(_ =>
{
_.Schema = _schema;
_.Query = queryToExecute;
_.OperationName = query.OperationName;
_.Inputs = inputs;
//_.ComplexityConfiguration = new ComplexityConfiguration { MaxDepth = 15 };
_.FieldMiddleware.Use<InstrumentFieldsMiddleware>();
}).Result;
var httpResult = result.Errors?.Count > 0
? HttpStatusCode.BadRequest
: HttpStatusCode.OK;
var json = _writer.Write(result);
}
And the caller looks like this:
var jObject = new Newtonsoft.Json.Linq.JObject();
jObject.Add("id", deviceId);
client.Post(new GraphQLQuery { Query = "query($id: String) { device (id: $id) { displayName, id } }", Variables = jObject });
I'm totally new to this topic and appreciate any help. Many thanks!!

This worked out for me. You will need the GraphQL.Client Package. My_class is the class for the deserialization.
var client = new GraphQLHttpClient(Api_Url, new NewtonsoftJsonSerializer());
var request = new GraphQLRequest
{
Query = {query}
};
var response = await client.SendQueryAsync<my_class>(request);

Not sure if you are still looking for it. One can always use GraphQl.Client nuget to achieve this. Sample code to consume is
var query = #"query($id: String) { device (id: $id) { displayName, id } }";
var request = new GraphQLRequest(){
Query = query,
Variables = new {id =123}
};
var graphQLClient = new GraphQLClient("http://localhost:8080/api/GraphQL");
graphQLClient.DefaultRequestHeaders.Add("Authorization", "yourtoken");
var graphQLResponse = await graphQLClient.PostAsync(request);
Console.WriteLine(graphQLResponse.Data);

Uploading files in Asp.NET Core using MongoDb

I would like to upload an image using Asp.net core and MongoDb; however, I am not able to find the property GridFS in MongoDatabase class . I have checked the Google and did not have any luck.
The method in which I need to change GridFS to something else:
private async Task StoreImage(Computer computer, IFormFile file)
{
var imageId = ObjectId.GenerateNewId();
computer.ImageId = imageId.ToString();
var filter = Builders<Computer>.Filter.Eq("_id", new ObjectId(computer.Id));
var update = Builders<Computer>.Update.Set("ImageId", computer.ImageId);
await db.Computers.UpdateOneAsync(filter, update);
db.GridFS.Upload(file.ToBson(), file.FileName, new MongoGridFSCreateOptions
{
Id = imageId,
ContentType = file.ContentType
});
}
Does anyone know the correct way to upload a file in MongoDB using ASP.net Core?

public class CdnDbContext
{
public IGridFSBucket GridFsBucket { get; set; }
public CdnDbContext()
{
var config = new ConfigurationBuilder()
.SetBasePath(Directory.GetCurrentDirectory())
.AddJsonFile("appsettings.json")
.Build();
var connectionString = config.GetConnectionString("MongoCdn");
var connection = new MongoUrl(connectionString);
var settings = MongoClientSettings.FromUrl(connection);
var client = new MongoClient(settings);
var database = client.GetDatabase(connection.DatabaseName);
GridFsBucket = new GridFSBucket(database);
}
}

Xamarin: Using HttpClient POST in combination with a dynamic Class

I have some services that require rather complex objects. Every service uses almost the same base object but it needs to be extended for each service.
A simple example:
The Standard Object would be something like:
ContextObject {
params {
Device {
Name: "MyMobileDevice",
ID: 123455691919238
}
}
}
and for my service I need to add some properties under params,
something like:
ContextObject {
params {
Device {
Name: "MyMobileDevice",
ID: 123455691919238
},
requested_employee_id: 112929
}
}
I tried to get this by using JObject and got it working so far but now I cant find a proper example on how to send this object to my server using HttpClient.
Edit:
Here is my full JObject which all Requests need:
public static JObject DefaultContext (string ServiceMethod) {
var Context = new JObject();
Context["version"] = "1.1";
Context["method"] = ServiceMethod;
Context["params"] = JObject.FromObject( new {
Context = JObject.FromObject( new {
User = App.UserSettings.USERNAME,
Password = App.UserSettings.PASSWORD,
SerialNumber = "1234567890", // TODO: use generated id
Locale = "de-DE",
Timestamp = DateTime.Now.ToString("yyyy-MM-ddTHH\\:mm\\:ss.fffzzz"),
Device = JObject.FromObject( new {
DeviceType = "phone",
ProductType = "D6603", // TODO: Get from Device-Info
screen = JObject.FromObject( new {
Density = "xxhdpi", // TODO: Get from Device-Info
resolution = JObject.FromObject( new {
Height = "1920", // TODO: Get from Device-Info
Width = "1080" // TODO: Get from Device-Info
})
}),
version = JObject.FromObject( new {
AppVersion = "myAppVersion", // TODO: Get App-Information LayoutVersion = "1.0"
} )
})
})
});
return mobileContext;
}
For my Requests I need to add parameters under the "params"-Node. Which works with:
mobileContext["params"]["mynewparameter"] = "FOO";
Now I wanted to send this JObject via System.Net.Http-Client to my server with something like this:
var client = new HttpClient ();
client.BaseAddress = new Uri (App.UserSettings.HOST + ":" + App.UserSettings.PORT + App.UserSettings.TYPE);
client.Timeout = 3000;
var context = MyContext.DefaultContext (ServiceMethods.CUSTOMER_LIST_METHOD);
context ["params"] ["myrequestparam"] = "FOO";
var jsonString = JsonConvert.SerializeObject (context);
var responseData = await client.Get???????
Is my general approach correct? How would you do it? Is there a sample on how to handle such dynamic stuff?
I couldn't find a example on how to use httpclient correctly with the Newtonsoft.JSON-Library how far am I from actually working code?