Improve Failing GICS Request Logs

[stolzA]

Log level is set to DEBUG.
In our example the error originates in gICS. The tc-agent log shows:

ERROR 1 --- [onPool-worker-1] c.s.f.t.c.FhirConsentedPatientsProvider  : Unable to fetch consent from gICS
org.springframework.web.reactive.function.client.WebClientResponseException$BadRequest: 400 Bad Request from POST http://gics-test:8080/gics/ttp-fhir/fhir/gics/$allConsentsForDomain
	at org.springframework.web.reactive.function.client.WebClientResponseException.create(WebClientResponseException.java:321) ~[spring-webflux-6.2.2.jar!/:6.2.2]
	Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException: 
Error has been observed at the following site(s):
	*__checkpoint ⇢ 400 BAD_REQUEST from POST http://gics-test:8080/gics/ttp-fhir/fhir/gics/$allConsentsForDomain [DefaultWebClient]
Original Stack Trace:
		at org.springframework.web.reactive.function.client.WebClientResponseException.create(WebClientResponseException.java:321) ~[spring-webflux-6.2.2.jar!/:6.2.2]
		at org.springframework.web.reactive.function.client.DefaultClientResponse.lambda$createException$1(DefaultClientResponse.java:214) ~[spring-webflux-6.2.2.jar!/:6.2.2]
		at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:106) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.FluxOnErrorReturn$ReturnSubscriber.onNext(FluxOnErrorReturn.java:162) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.FluxDefaultIfEmpty$DefaultIfEmptySubscriber.onNext(FluxDefaultIfEmpty.java:122) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:129) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.FluxContextWrite$ContextWriteSubscriber.onNext(FluxContextWrite.java:107) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.FluxMapFuseable$MapFuseableConditionalSubscriber.onNext(FluxMapFuseable.java:299) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.FluxFilterFuseable$FilterFuseableConditionalSubscriber.onNext(FluxFilterFuseable.java:337) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.Operators$BaseFluxToMonoOperator.completePossiblyEmpty(Operators.java:2097) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.MonoCollect$CollectSubscriber.onComplete(MonoCollect.java:145) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.FluxPublish$PublishSubscriber.checkTerminated(FluxPublish.java:634) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.FluxPublish$PublishSubscriber.drain(FluxPublish.java:494) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.FluxPublish$PublishSubscriber.onComplete(FluxPublish.java:355) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.FluxContextWrite$ContextWriteSubscriber.onComplete(FluxContextWrite.java:126) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.FluxMapFuseable$MapFuseableConditionalSubscriber.onComplete(FluxMapFuseable.java:350) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.FluxFlattenIterable$FlattenIterableSubscriber.drainAsync(FluxFlattenIterable.java:371) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.FluxFlattenIterable$FlattenIterableSubscriber.drain(FluxFlattenIterable.java:724) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.FluxFlattenIterable$FlattenIterableSubscriber.onComplete(FluxFlattenIterable.java:273) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.adapter.JdkFlowAdapter$SubscriberToRS.onComplete(JdkFlowAdapter.java:160) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at java.net.http/jdk.internal.net.http.ResponseSubscribers$PublishingBodySubscriber.complete(Unknown Source) ~[java.net.http:na]
		at java.net.http/jdk.internal.net.http.ResponseSubscribers$PublishingBodySubscriber.lambda$new$1(Unknown Source) ~[java.net.http:na]
		at java.base/java.util.concurrent.CompletableFuture$UniAccept.tryFire(Unknown Source) ~[na:na]
		at java.base/java.util.concurrent.CompletableFuture.postComplete(Unknown Source) ~[na:na]
		at java.base/java.util.concurrent.CompletableFuture.complete(Unknown Source) ~[na:na]
		at java.net.http/jdk.internal.net.http.ResponseSubscribers$PublishingBodySubscriber.lambda$subscribe$3(Unknown Source) ~[java.net.http:na]
		at java.base/java.util.concurrent.CompletableFuture.uniAcceptNow(Unknown Source) ~[na:na]
		at java.base/java.util.concurrent.CompletableFuture.uniAcceptStage(Unknown Source) ~[na:na]
		at java.base/java.util.concurrent.CompletableFuture.thenAccept(Unknown Source) ~[na:na]
		at java.net.http/jdk.internal.net.http.ResponseSubscribers$PublishingBodySubscriber.subscribe(Unknown Source) ~[java.net.http:na]
		at reactor.adapter.JdkFlowAdapter$FlowPublisherAsFlux.subscribe(JdkFlowAdapter.java:68) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.InternalFluxOperator.subscribe(InternalFluxOperator.java:68) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.FluxPublish.connect(FluxPublish.java:106) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.FluxAutoConnect.subscribe(FluxAutoConnect.java:62) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.Flux.subscribe(Flux.java:8891) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at org.springframework.http.client.reactive.AbstractClientHttpResponse$SingleSubscriberPublisher.subscribe(AbstractClientHttpResponse.java:112) ~[spring-web-6.2.2.jar!/:6.2.2]
		at reactor.core.publisher.FluxSource.subscribe(FluxSource.java:71) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:76) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:165) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.FluxContextWrite$ContextWriteSubscriber.onNext(FluxContextWrite.java:107) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.FluxDoFinally$DoFinallySubscriber.onNext(FluxDoFinally.java:113) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.MonoPeekTerminal$MonoTerminalPeekSubscriber.onNext(MonoPeekTerminal.java:180) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.FluxPeekFuseable$PeekConditionalSubscriber.onNext(FluxPeekFuseable.java:854) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onNext(FluxSwitchIfEmpty.java:74) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.SerializedSubscriber.onNext(SerializedSubscriber.java:99) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.FluxTimeout$TimeoutMainSubscriber.onNext(FluxTimeout.java:181) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.FluxPeek$PeekSubscriber.onNext(FluxPeek.java:200) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:122) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.FluxOnErrorResume$ResumeSubscriber.onNext(FluxOnErrorResume.java:79) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.FluxPeek$PeekSubscriber.onNext(FluxPeek.java:200) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.FluxPeek$PeekSubscriber.onNext(FluxPeek.java:200) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.complete(MonoIgnoreThen.java:294) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.onNext(MonoIgnoreThen.java:188) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:122) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.MonoCompletionStage$MonoCompletionStageSubscription.apply(MonoCompletionStage.java:121) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at reactor.core.publisher.MonoCompletionStage$MonoCompletionStageSubscription.apply(MonoCompletionStage.java:67) ~[reactor-core-3.7.2.jar!/:3.7.2]
		at java.base/java.util.concurrent.CompletableFuture.uniHandle(Unknown Source) ~[na:na]
		at java.base/java.util.concurrent.CompletableFuture$UniHandle.tryFire(Unknown Source) ~[na:na]
		at java.base/java.util.concurrent.CompletableFuture.postComplete(Unknown Source) ~[na:na]
		at java.base/java.util.concurrent.CompletableFuture.postFire(Unknown Source) ~[na:na]
		at java.base/java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(Unknown Source) ~[na:na]
		at java.base/java.util.concurrent.CompletableFuture$Completion.exec(Unknown Source) ~[na:na]
		at java.base/java.util.concurrent.ForkJoinTask.doExec(Unknown Source) ~[na:na]
		at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(Unknown Source) ~[na:na]
		at java.base/java.util.concurrent.ForkJoinPool.scan(Unknown Source) ~[na:na]
		at java.base/java.util.concurrent.ForkJoinPool.runWorker(Unknown Source) ~[na:na]
		at java.base/java.util.concurrent.ForkJoinWorkerThread.run(Unknown Source) ~[na:na]

[trobanga]

We should handle all error codes specified in IG TTP-FHIR Gateway

400: Fehlende oder fehlerhafte Parameter.
401: Fehlende Authentifizierung oder Autorisierung.
404: Parameter mit unbekanntem Inhalt.
422: Fehlende oder falsche Patienten-Attribute.

It seems that at the moment we only handle 404.

[trobanga]

I suggest that if there is an OperationOutcome from gICS, we log and forward it as an error.