Azure IoTHub routing revisited, Blob Storage Endpoints

Recently, Microsoft added some extra features to the IoTHub routing abilities:

  1. Support for routing using the message body
  2. Support for Blob Storage as endpoint

In this blog, we will look at both features using the Visual Studio 2017 extension called the IoT Hub Connected Service, which is updated also.

But first, let’s look at the new Blob Storage endpoint.

Sending telemetry to a Blob Storage container is a simple and efficient way for cold path analytics:

Until recently, there were a few ways to do this:

  • Sending IoTHub output to a Stream Analytics job, which filled some blob
  • Sending IoTHub output to an Azure Function, which filled some blob
  • Making use of the IoT Hub ability to receive blobs

The first two ways can be done using extra Azure resources so additional costs are involved. The third one is only used in very specific circumstances.

The new Blob Storage endpoint is a simple but very powerful way of making Cold path analytics available, right from the IoTHub.

Continue reading “Azure IoTHub routing revisited, Blob Storage Endpoints”

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Introduction to the IoT Edge SDK, part 4

We have already made great progress understanding and using the Azure Gateway SDK.

What do we have right now? We can send telemetry data from multiple ‘offline’ devices and accept commands from the IoT Hub.

The data we send is well-formatted JSON so we are good to go.

But I am a bit worried. While reading all documentation regarding the transformation from Azure Gateway SDK towards the IoT Edge SDK, it is clear that multiple types of messages are sent to the IoT Hub. For example, I can imagine that a Stream Analytics module generates other data.

And let’s look at a more ‘close to earth’ example. The gateway itself is a potential device too! But I do not want to mix data coming from the gateway and from sensor devices.

Of course, we recently got the ability to route messages using the message sent. But what about using the properties? This keeps the message content clean.

Will this be working?

Continue reading “Introduction to the IoT Edge SDK, part 4”