[hue] Refresh is not working correctly (API v2)

[jlaur]

When linking a new item to a channel, its value is not updated in a timely manner.

Expected Behavior

The binding should request initial state upon receiving a REFRESH command.

Current Behavior

Under some circumstances the binding will skip the refresh logic.

Possible Solution

The conditions here seem wrong:

openhab-addons/bundles/org.openhab.binding.hue/src/main/java/org/openhab/binding/hue/internal/handler/Clip2ThingHandler.java

Lines 304 to 307 in 2382a55

	Future<?> task = updateServiceContributorsTask;
	if (Objects.isNull(task) || !task.isDone()) {
	cancelTask(updateServiceContributorsTask, false);
	updateServiceContributorsTask = scheduler.schedule(() -> {

I believe it will skip the refresh logic when updateServiceContributorsTask is assigned and done.

Steps to Reproduce

• Create a new Thing, for example a battery-powered sensor such as a motion sensor that will only rarely send data (on motion detection and periodically on temperature changes, etc).
• Link an item to a channel.
• Wait for the state to be set.

Context

While working on #15552 I observed this behavior while testing.

A work-around is to disable and reenable the bridge Thing.

Your Environment

• Version used: 4.0.3 and 4.1-snapshot