Basic exception mapping

src/main/kotlin/com/rak/model/ErrorResponse.kt

@@ -0,0 +1,5 @@
+package com.rak.model
+
+data class ErrorResponse(
+    val message: String
+)

src/main/kotlin/com/rak/model/exception/mapper/NotImplementedExceptionMapper.kt

@@ -0,0 +1,18 @@
+package com.rak.model.exception.mapper
+
+import com.rak.model.ErrorResponse
+import com.rak.model.exception.NotImplementedException
+import jakarta.ws.rs.core.Response
+import jakarta.ws.rs.ext.ExceptionMapper
+import jakarta.ws.rs.ext.Provider
+
+@Provider
+class NotImplementedExceptionMapper : ExceptionMapper<NotImplementedException> {
+    override fun toResponse(exception: NotImplementedException): Response {
+        return Response.status(405).entity(
+            ErrorResponse(
+                exception.message ?: "Provider does not implement this method"
+            )
+        ).build()
+    }
+}

src/main/kotlin/com/rak/model/exception/mapper/TargetNotFoundExceptionMapper.kt

@@ -0,0 +1,19 @@
+package com.rak.model.exception.mapper
+
+import com.rak.model.ErrorResponse
+import com.rak.model.exception.NotImplementedException
+import com.rak.model.exception.TargetNotFoundException
+import jakarta.ws.rs.core.Response
+import jakarta.ws.rs.ext.ExceptionMapper
+import jakarta.ws.rs.ext.Provider
+
+@Provider
+class TargetNotFoundExceptionMapper : ExceptionMapper<TargetNotFoundException> {
+    override fun toResponse(exception: TargetNotFoundException): Response {
+        return Response.status(404).entity(
+            ErrorResponse(
+                exception.message ?: "Scrape target could not be found"
+            )
+        ).build()
+    }
+}