add db interaction layer

src/Application.kt

@@ -9,12 +9,10 @@ import io.ktor.gson.*
 import io.ktor.features.*
 import io.ktor.client.*
 import io.ktor.client.engine.apache.*
-import com.fasterxml.jackson.databind.*
-import io.ktor.jackson.*
 import io.ktor.auth.*
 import kotlin.reflect.*
 import java.util.*
-import io.ktor.swagger.experimental.*
+import org.apache.http.HttpException
 
 fun main(args: Array<String>): Unit = io.ktor.server.netty.EngineMain.main(args)
 
@@ -24,10 +22,6 @@ fun Application.module(testing: Boolean = false) {
     install(ContentNegotiation) {
         gson {
         }
-
-        jackson {
-            enable(SerializationFeature.INDENT_OUTPUT)
-        }
     }
 
     val client = HttpClient(Apache) {
@@ -49,19 +43,16 @@ fun Application.module(testing: Boolean = false) {
             exception<AuthenticationException> { cause ->
                 call.respond(HttpStatusCode.Unauthorized)
             }
+
             exception<AuthorizationException> { cause ->
                 call.respond(HttpStatusCode.Forbidden)
             }
 
-            exception<HttpException> {  cause ->
-                call.respond(cause.code, cause.description)
+            exception<HttpException> { cause ->
+                call.respond(HttpStatusCode.BadRequest)
             }
         }
 
-        get("/json/jackson") {
-            call.respond(mapOf("hello" to "world"))
-        }
-
         OutputServiceRDBServer().apply {
             registerOutput()
         }