Make webflux as implementation && Use its own objectMapper (#6)

* logback integration

* make exception not null for protocol

* use HubAdapter

* fix test

* reflect review

* impl webflux & use own jackson

build.gradle.kts

@@ -35,7 +35,7 @@ allprojects {
 
     dependencyManagement {
         imports {
-            mavenBom("org.springframework.boot:spring-boot-dependencies:3.0.1")
+            mavenBom("org.springframework.boot:spring-boot-dependencies:3.0.3")
         }
     }
 

settings.gradle.kts

@@ -1,5 +1,7 @@
 rootProject.name = "truffle-kotlin"
 
-include("truffle-core")
-include("truffle-logback")
-include("truffle-spring-boot-starter")
+include(
+    "truffle-core",
+    "truffle-logback",
+    "truffle-spring-boot-starter",
+)

truffle-core/build.gradle.kts

@@ -1,3 +1,5 @@
 dependencies {
-    compileOnly("org.springframework.boot:spring-boot-starter-webflux")
+    implementation("org.springframework:spring-webflux")
+    implementation("org.slf4j:slf4j-api")
+    compileOnly("ch.qos.logback:logback-classic")
 }

truffle-core/src/main/kotlin/TruffleClient.kt

@@ -1,5 +1,6 @@
 package com.wafflestudio.truffle.sdk.core
 
+import com.fasterxml.jackson.module.kotlin.jacksonObjectMapper
 import com.wafflestudio.truffle.sdk.core.protocol.TruffleEvent
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.SupervisorJob
@@ -8,6 +9,7 @@ import kotlinx.coroutines.flow.MutableSharedFlow
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.reactor.awaitSingle
 import org.slf4j.LoggerFactory
+import org.springframework.http.codec.json.Jackson2JsonEncoder
 import org.springframework.web.reactive.function.client.WebClient
 import org.springframework.web.reactive.function.client.bodyToMono
 import java.time.Duration
@@ -29,6 +31,9 @@ internal class DefaultTruffleClient(
             Executors.newSingleThreadExecutor { r -> Thread(r, "truffle-client") }.asCoroutineDispatcher()
         )
         val webClient = webClientBuilder
+            .codecs {
+                it.defaultCodecs().jackson2JsonEncoder(Jackson2JsonEncoder(jacksonObjectMapper()))
+            }
             .baseUrl("https://truffle-api.wafflestudio.com")
             .defaultHeader("x-api-key", apiKey)
             .build()