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[enocean] Fix concurrency exception on startup (#11408) 

* made listeners a ConcurrentHashMap
* synchronized access to listeners and eventListeners collections of EnOceanTransceiver
* reverted ConcurrentHashMap change as NULL-Key is required

Fixes #11393

Also-by: Daniel Weber <uni@fruggy.de>
Signed-off-by: Thomas Lauterbach <lauterbachthomas@gmail.com>
This commit is contained in:
Thomas Lauterbach 2021-10-21 00:08:18 +02:00 committed by GitHub
parent d7df7a698d
commit 9cc3f441fd
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 13 additions and 8 deletions
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21
bundles/org.openhab.binding.enocean/src/main/java/org/openhab/binding/enocean/internal/transceiver/EnOceanTransceiver.java
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@ -220,6 +220,7 @@ public abstract class EnOceanTransceiver implements SerialPortEventListener {
readingTask = null;
timeOut = null;
listeners.clear();
eventListeners.clear();
teachInListener = null;
errorListener = null;
@ -302,9 +303,11 @@ public abstract class EnOceanTransceiver implements SerialPortEventListener {
}
long s = Long.parseLong(HexUtils.bytesToHex(senderId), 16);
HashSet<PacketListener> pl = listeners.get(s);
if (pl != null) {
pl.forEach(l -> l.packetReceived(msg));
synchronized (this) {
HashSet<PacketListener> pl = listeners.get(s);
if (pl != null) {
pl.forEach(l -> l.packetReceived(msg));
}
}
}
} else {
@ -331,7 +334,9 @@ public abstract class EnOceanTransceiver implements SerialPortEventListener {
}
}
eventListeners.forEach(l -> l.eventReceived(event));
synchronized (this) {
eventListeners.forEach(l -> l.eventReceived(event));
}
}
} catch (Exception e) {
logger.error("Exception in informListeners", e);
@ -374,13 +379,13 @@ public abstract class EnOceanTransceiver implements SerialPortEventListener {
protected abstract byte[] serializePacket(BasePacket packet) throws EnOceanException;
public void addPacketListener(PacketListener listener, long senderIdToListenTo) {
public synchronized void addPacketListener(PacketListener listener, long senderIdToListenTo) {
if (listeners.computeIfAbsent(senderIdToListenTo, k -> new HashSet<>()).add(listener)) {
logger.debug("Listener added: {}", senderIdToListenTo);
}
}
public void removePacketListener(PacketListener listener, long senderIdToListenTo) {
public synchronized void removePacketListener(PacketListener listener, long senderIdToListenTo) {
HashSet<PacketListener> pl = listeners.get(senderIdToListenTo);
if (pl != null) {
pl.remove(listener);
@ -390,11 +395,11 @@ public abstract class EnOceanTransceiver implements SerialPortEventListener {
}
}
public void addEventMessageListener(EventListener listener) {
public synchronized void addEventMessageListener(EventListener listener) {
eventListeners.add(listener);
}
public void removeEventMessageListener(EventListener listener) {
public synchronized void removeEventMessageListener(EventListener listener) {
eventListeners.remove(listener);
}