I and my team are trying to build an app for data visualization and analysis in WebApp the data source is from Stream Analytics Services,
can we connect to Stream Analytics from .NET core web app, if there is any way please provide reference resources.
what is the best practice or service to use for data stream if I am using WebApp?
Or can we connect to IOTHub from WebApp, which is a better option compared with the above one?
Thank you, Ranjith
Unfortunately, Azure Stream Analytics cannot stream data directly into a .Net core web app.
Option1: You can visualize data from your Azure IoT Hub in a web application.
Option2: If you want to use Azure Stream Analytics, you need to send the data into supported outputs and then connect to the Web app.
Reference:
Visualize real-time sensor data from your Azure IoT hub in a web application
Creating a simple IoT application using a RaspberryPi+ NET Core and Azure
Related
I am working with a device that cannot include Azure IoT SDK. It can only send HTTO calls.
Is there any guide explain the simplest REST calls that allow my device send telemetry data to Azure IoT Hub?
Azure IoT Hub also offer the REST API to Send a device-to-cloud message.
The REST APIs for IoT Hub offer programmatic access to the device, messaging, and job services, as well as the resource provider, in IoT Hub. You can access messaging services from within an IoT service running in Azure, or directly over the Internet from any application that can send an HTTPS request and receive an HTTPS response.
You can use the Send Device Event for sending device-to-cloud message.
POST https://fully-qualified-iothubname.azure-devices.net/devices/{id}/messages/events?api-version=2020-03-13
You can go through the below documentations for more details.
Azure IoT Hub Device Rest API Operations and Azure IoT Hub REST API
My companys Services are a little bit complicated. Thats why my company demands that i write an NestJS API that requests the Data from the Azure Industrial IoT Services(those are APIs or hubs i dont realy know) for a particular job.
My problem now is, that i dont know how to authenticate nestjs to azure. So that i can request from those Azure Services the Data.
The structure of this project looks like this:
AZURE - Services are behind<--------->NestJS-Api + Postgres<---------->AngularApp
The nestJS-Api should have authorisation to request data 24/7(the whole time)
If you want to manage Azure services such as create/delete an Azure IOT hub service, you will need to get an access token by passport.js and call Azure management API.
But if you already have an Azure IOT hub service, you want to use this service by API, and you are facing the authentication issue, you can just refer to this official guide.
I'm looking for CRUD Java APIs for IoT Hub. I'm specifically looking for the java equivalent for this REST API (https://learn.microsoft.com/en-us/rest/api/iothub/iothubresource).
I was able to find APIs to create/register devices and send/receive messages but wasn't able find APIs to CRUD Azure IoT hub.
The Azure IoT Hub provided different endpoints for manipulate it. These endpoints can be classified as device, service, resource provider, etc(More detail about endpoints of Azure IoT Hub, please refer Azure IoT Hub endpoints).
And Microsoft provide the SDK in different lanuages for Azure IoT hub based on the different endpoints. For example, Microsoft provides C# SDK for Azure IoT Hub for the device and service endpoints named client library(refer here). And Microsoft also provides the C# SDK for the resource provider as Management.
However there is no JAVA SDK for the resource provider for Azure IoT Hub(refer here). You can use the REST in Java for resource provider endpoint of Azure IoT hub. The REST of CRUD Azure IoT Hub, you can refer the links below:
Create Or Update
Delete
Get
In-addition, if you also want Microsoft to provide the Azure IoT resource provider Java SDK, you can vote the feedback from link below:
Azure IoT Hub management SDK for Java
Can we perform below task on Windows Azure Media Service that is
storing, Retrieving,maintaining Version of Video, Permission handling, Searching for the video
for each tenant on the SaaS environment
Currently Azure Media services providing infrastructure to ingest, encode and deliver media assets. Complex metadata, versioning, access control and additional content management functionality can be extended by third party providers or in your application.
Short answer that for now Windows Azure Media Service is not positioned as CMS system with listed in your question functionality.
You can use Asset.AlternativeId to store any keys from external system which can be built on top of Windows Azure Media Service.
I am to implement a service such the user can upload files to azure storage, and also store the meta data in a azure sql database.
Lets say the user want to upload 1gb of data, is it then needed to be send to the webservice first and then from service to azure storage? Is there a way to initiate the upload and then the user sends the data directly to the server with azure storage?
I think i read something like that but cant find it now and not sure what to search for on google.
Yes this is possible but you'll need to use a client side technology which can talk to the REST API, like Silverlight for example. Steve Marx did a series of blog posts explaining how you can leverage Silverlight and the REST API to upload files to blob storage (even very large files): Uploading Windows Azure Blobs from Silverlight – Part 3: Handling Big Files by Using the Block APIs. And a Silverlight control is very easy to integrate in an existing website.