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[mqtt.homeassistant] Stable jsondb discovery result (#13401)

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* [mqtt.homeassistant] Stable jsondb serialization for discovery results

Similar to openhab/openhab-core#2436, we want
to have consistent ordering of data in JSONDB. This is fixing the jsondb
order for mqtt.homeassistant discovery results, specifically, the
"topics" property.

* [mqtt.homeassistant] order using full topic string, not by subcomponent

Signed-off-by: Sami Salonen <ssalonen@gmail.com>
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Sami Salonen 2022-09-18 19:20:49 +03:00 committed by GitHub
parent 6ebf20f183
commit 2fd2e5175f
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1 changed files with 17 additions and 2 deletions
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bundles/org.openhab.binding.mqtt.homeassistant/src/main/java/org/openhab/binding/mqtt/homeassistant/internal/discovery/HomeAssistantDiscovery.java
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@ -16,9 +16,11 @@ import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Set;
import java.util.TreeMap;
import java.util.concurrent.ConcurrentHashMap;
@ -166,8 +168,21 @@ public class HomeAssistantDiscovery extends AbstractMQTTDiscovery {
thingIDPerTopic.put(topic, thingUID);
// We need to keep track of already found component topics for a specific thing
Set<HaID> components = componentsPerThingID.computeIfAbsent(thingID, key -> ConcurrentHashMap.newKeySet());
components.add(haID);
final List<HaID> components;
{
Set<HaID> componentsUnordered = componentsPerThingID.computeIfAbsent(thingID,
key -> ConcurrentHashMap.newKeySet());
// Invariant. For compiler, computeIfAbsent above returns always
// non-null
Objects.requireNonNull(componentsUnordered);
componentsUnordered.add(haID);
components = componentsUnordered.stream().collect(Collectors.toList());
// We sort the components for consistent jsondb serialization order of 'topics' thing property
// Sorting key is HaID::toString, i.e. using the full topic string
components.sort(Comparator.comparing(HaID::toString));
}
final String componentNames = components.stream().map(id -> id.component)
.map(c -> HA_COMP_TO_NAME.getOrDefault(c, c)).collect(Collectors.joining(", "));