Delay node: Dynamic durations and until times from context variables

[jensrossbach]

Currently delay node can retrieve dynamic delay data (duration or until time) only from incoming messages. With this extension, delay node shall be able to load this delay data also from context variables (first message being queued triggers the load from context variables).

[jensrossbach]

To a certain extend, this is already possible. With custom delay type, one can use the JSONata functions $flowContext, $globalContext and $env for retrieving values from context or environment variables. This might be more complex than data similar to the message overrides and requires some knowledge of JSONata on one side, but it is quite flexible on the other side.

Therefore it has to be decided, if this feature is worth implementing.

[jensrossbach]

Will be implemented.

[jensrossbach]

Implemented with release 1.19.