chore: erweitere Resilience4j-Bundle um Kotlin-Support, aktualisiere PingController um Fallback-Logik, füge Fehlerhandler hinzu, verbessere PingControllerTest, synchronisiere .env und dc-infra.yaml

backend/services/ping/ping-service/src/main/kotlin/at/mocode/ping/infrastructure/web/PingController.kt

@@ -2,6 +2,7 @@ package at.mocode.ping.infrastructure.web
 
 import at.mocode.ping.api.*
 import at.mocode.ping.application.PingUseCase
+import at.mocode.ping.domain.Ping
 import at.mocode.ping.infrastructure.PingProperties
 import io.github.resilience4j.circuitbreaker.annotation.CircuitBreaker
 import org.slf4j.LoggerFactory
@@ -20,7 +21,7 @@ import kotlin.uuid.ExperimentalUuidApi
  */
 @RestController
 @OptIn(ExperimentalUuidApi::class)
-class PingController(
+open class PingController(
   private val pingUseCase: PingUseCase,
   private val properties: PingProperties
 ) : PingApi {
@@ -43,10 +44,16 @@ class PingController(
   override suspend fun enhancedPing(
     @RequestParam(required = false, defaultValue = "false") simulate: Boolean
   ): EnhancedPingResponse {
+    logger.info("Enhanced ping requested, simulate: {}", simulate)
     val start = System.nanoTime()
 
-    if (simulate && Random.nextDouble() < 0.6) {
-      throw RuntimeException("Simulated service failure")
+    if (simulate) {
+      if (Random.nextDouble() < 0.6) {
+        logger.info("Simulating service failure now...")
+        throw SimulatedException("Simulated service failure")
+      } else {
+        logger.info("Simulation mode ACTIVE, but this time lucky: Request passed!")
+      }
     }
 
     val domainPing = pingUseCase.executePing("Enhanced Ping")
@@ -61,6 +68,8 @@ class PingController(
     )
   }
 
+  class SimulatedException(message: String) : RuntimeException(message)
+
   // Neue Endpunkte
 
   @GetMapping("/ping/public")
@@ -70,7 +79,7 @@ class PingController(
   }
 
   @GetMapping("/ping/secure")
-  @PreAuthorize("hasRole('MELD_USER') or hasRole('MELD_ADMIN')") // Beispiel-Rollen
+  @PreAuthorize("hasRole('ROLE_MELD_USER') or hasRole('ROLE_MELD_ADMIN')") // Beispiel-Rollen
   override suspend fun securePing(): PingResponse {
     val domainPing = pingUseCase.executePing("Secure Ping")
     return createResponse(domainPing, "secure-pong")
@@ -79,7 +88,7 @@ class PingController(
   @GetMapping("/ping/sync")
   override suspend fun syncPings(
     // Changed the parameter name to 'since' to match SyncManager convention
-    @RequestParam(required = false, defaultValue = "0") since: Long
+    @RequestParam(name = "lastSyncTimestamp", required = false, defaultValue = "0") since: Long
   ): List<PingEvent> {
     return pingUseCase.getPingsSince(since).map {
       PingEvent(
@@ -91,7 +100,7 @@ class PingController(
   }
 
   // Helper
-  private fun createResponse(domainPing: at.mocode.ping.domain.Ping, status: String) = PingResponse(
+  private fun createResponse(domainPing: Ping, status: String) = PingResponse(
     status = status,
     timestamp = domainPing.timestamp.atOffset(ZoneOffset.UTC).format(formatter),
     service = properties.serviceName
@@ -99,8 +108,8 @@ class PingController(
 
   // Fallback
   @Suppress("unused", "UNUSED_PARAMETER")
-  fun fallbackPing(simulate: Boolean, ex: Exception): EnhancedPingResponse {
-    logger.warn("Circuit breaker fallback triggered: {}", ex.message)
+  open fun fallbackPing(simulate: Boolean, ex: Throwable): EnhancedPingResponse {
+    logger.error("CIRCUIT BREAKER FALLBACK TRIGGERED! Reason: {}", ex.message, ex)
     return EnhancedPingResponse(
       status = "fallback",
       timestamp = java.time.OffsetDateTime.now().format(formatter),

backend/services/ping/ping-service/src/main/kotlin/at/mocode/ping/infrastructure/web/PingExceptionHandler.kt

@@ -0,0 +1,32 @@
+package at.mocode.ping.infrastructure.web
+
+import org.slf4j.LoggerFactory
+import org.springframework.http.HttpStatus
+import org.springframework.http.ProblemDetail
+import org.springframework.security.access.AccessDeniedException
+import org.springframework.web.bind.annotation.ExceptionHandler
+import org.springframework.web.bind.annotation.RestControllerAdvice
+
+@RestControllerAdvice
+class PingExceptionHandler {
+  private val log = LoggerFactory.getLogger(PingExceptionHandler::class.java)
+
+  @ExceptionHandler(AccessDeniedException::class)
+  fun handleAccessDenied(ex: AccessDeniedException): ProblemDetail {
+    log.warn("Zugriff verweigert: ${ex.message}")
+    return ProblemDetail.forStatusAndDetail(HttpStatus.FORBIDDEN, "Nicht berechtigt: ${ex.message}")
+  }
+
+  @ExceptionHandler(Exception::class)
+  fun handleAll(ex: Exception): ProblemDetail {
+    log.error("Unerwarteter Fehler: ", ex)
+    return ProblemDetail.forStatusAndDetail(HttpStatus.INTERNAL_SERVER_ERROR, ex.message ?: "Ein interner Fehler ist aufgetreten")
+  }
+
+  @ExceptionHandler(RuntimeException::class)
+  fun handleRuntime(ex: RuntimeException): ProblemDetail {
+    log.error("Interner Fehler: ", ex)
+    return ProblemDetail.forStatusAndDetail(HttpStatus.INTERNAL_SERVER_ERROR, ex.message ?: "Unbekannter Fehler")
+  }
+
+}