v4.4.2

15 April 2024

Integrations

An issue was discovered with Python Agent v1.61 in where certain combinations of agents resulted in all data streams failing to startup on a Stream Host. This version of the agent was incorrectly packaged and has since been rectified. Upgrading the Python Agent to v1.65 and using the latest Stream Host (v4.4.2) is recommended. An issue was discovered with Calculated Field Agent v3.44 where it was not compatible with pre v4.4.0 of the Stream Host. This version of the agent was incorrectly packaged and has since been rectified. Upgrading the Calculated Field agent to v4.45 and using the latest Stream Host (v4.4.2) is recommended.

Change TypeNameDescription

New

Include data from an HTTP endpoint in your Application.

New

Include graph data in your Application.

New

Fetch data from, insert, update, create or merge data into, a Neo4j graph database.

New

Receive and publish Sparkplug B-compliant messages to and from an external MQTT broker.

New

Utilize an optimized query that enhances the Time Series Chart performance.

Enhancement

Support CC and BCC.

Support variables for the From address.

Enhancement

Updated Nethereum Nuget to 4.19.0.

Enhancement

Support a Staging model or a specific version. Validate the model signature.

Fix

Fix

Collection was modified error. Fixed a rare concurrent access exception when fetching updated rules.

Fix

App Designer

Change TypeDescription

Enhancement

Fix

My lightweight App or App Page fails to export. We've optimized how we store grid filter properties, reducing the exported App size.

Subscription Manager

Change TypeDescription

Enhancement

Microsoft .NET Framework upgrade from 4.7.2 to 4.8.1

Fix

The default Subscription Manager log to file path is accessible through a web browser. The default log to file location is App_Data, which is hidden by default globally on IIS and therefore not public.

Stream Host

Change TypeDescription

Feature

Enhancement

Enhancement

Enhancement

We've improved the encryption of agent parameters and variables. A new enableLegacyCrypto feature flag, which defaults to false, allows you to revert to the historic encryption method. We recommend sticking with the new method as the legacy method will eventually be deprecated.

If you're running Data Stream Designer v4.2.2+, no action is necessary. If xmpro:XMCryptography:TripleDES:Key is specified in the configuration, a warning log will inform this is obsolete and can be removed.

If you're running Data Stream Designer older than v4.4.2, you must:

  • add xmpro:Gateway:FeatureFlags:EnableLegacyCrypto=true to the config

If you don't, the Stream Host will fail at start-up and the resulting log will remind you to take the above actions.

An older Stream Host with an older Data Stream Designer will continue functioning as usual.

Fix

The required assembly is missing when using the Calculated Agent v1.65 with an older Stream Host. When an Agent and the Stream Host supply the same assembly, the correct one is selected. In addition, detailed debug information is now logged when loading agent assemblies to better troubleshoot Agent and Stream Host issues. There is a check for certain agent assembly loading conditions, which will be visible in the Data Stream log viewer.

Fix

The configuration blade for any SQL Server Agent v5.0 is blank when using the latest Stream Host (v4.4.2). Added error handling for Agents packaged with a 'null' configuration key.

Fix

Encountered a 'Collection Modified' error on the Run Recommendation Agent. This was fixed in v4.4.1.

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