Ecobee binding logging stack trace for java.net.UnknownHostException

[robnielsen]

My internet service was down for a bit and openhab.log contains multiple log entries like:

2021-02-24 04:18:01.797 [INFO ] [inding.ecobee.internal.api.EcobeeApi] - API: Call to Ecobee API failed
java.io.IOException: java.util.concurrent.ExecutionException: java.net.UnknownHostException: api.ecobee.com: Temporary failure in name resolution
        at org.openhab.core.io.net.http.HttpUtil.executeUrlAndGetReponse(HttpUtil.java:260) ~[bundleFile:?]
        at org.openhab.core.io.net.http.HttpUtil.executeUrl(HttpUtil.java:155) ~[bundleFile:?]
        at org.openhab.core.io.net.http.HttpUtil.executeUrl(HttpUtil.java:130) ~[bundleFile:?]
        at org.openhab.binding.ecobee.internal.api.EcobeeApi.executeGet(EcobeeApi.java:283) [bundleFile:?]
        at org.openhab.binding.ecobee.internal.api.EcobeeApi.performThermostatSummaryQuery(EcobeeApi.java:215) [bundleFile:?]
        at org.openhab.binding.ecobee.internal.handler.EcobeeAccountBridgeHandler.refreshThermostats(EcobeeAccountBridgeHandler.java:217) [bundleFile:?]
        at org.openhab.binding.ecobee.internal.handler.EcobeeAccountBridgeHandler.refresh(EcobeeAccountBridgeHandler.java:210) [bundleFile:?]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) [?:?]
        at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305) [?:?]
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305) [?:?]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) [?:?]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) [?:?]
        at java.lang.Thread.run(Thread.java:834) [?:?]
Caused by: java.util.concurrent.ExecutionException: java.net.UnknownHostException: api.ecobee.com: Temporary failure in name resolution
        at org.eclipse.jetty.client.util.FutureResponseListener.getResult(FutureResponseListener.java:118) ~[bundleFile:9.4.20.v20190813]
        at org.eclipse.jetty.client.util.FutureResponseListener.get(FutureResponseListener.java:101) ~[bundleFile:9.4.20.v20190813]
        at org.eclipse.jetty.client.HttpRequest.send(HttpRequest.java:685) ~[bundleFile:9.4.20.v20190813]
        at org.openhab.core.io.net.http.HttpUtil.executeUrlAndGetReponse(HttpUtil.java:251) ~[bundleFile:?]
        ... 12 more
Caused by: java.net.UnknownHostException: api.ecobee.com: Temporary failure in name resolution
        at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method) ~[?:?]
        at java.net.InetAddress$PlatformNameService.lookupAllHostAddr(InetAddress.java:929) ~[?:?]
        at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1515) ~[?:?]
        at java.net.InetAddress$NameServiceAddresses.get(InetAddress.java:848) ~[?:?]
        at java.net.InetAddress.getAllByName0(InetAddress.java:1505) ~[?:?]
        at java.net.InetAddress.getAllByName(InetAddress.java:1364) ~[?:?]
        at java.net.InetAddress.getAllByName(InetAddress.java:1298) ~[?:?]
        at org.eclipse.jetty.util.SocketAddressResolver$Async.lambda$resolve$1(SocketAddressResolver.java:170) ~[?:?]
        at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:782) ~[?:?]
        at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:918) ~[?:?]
        ... 1 more

The binding should log the exception message, not the full stack trace.

[kaikreuzer]

It actually must only log in DEBUG level in such situations - only if there is something unexpected in the binding itself (i.e. a bug that should be reported), a WARN should be done.
Not being able to reach a server/device should result in the Thing going OFFLINE with an according message through the UI.

I have created #10255.