use kotlinx serialization

build.gradle.kts

@@ -1,6 +1,7 @@
 plugins {
     application
     kotlin("jvm") version "1.5.10"
+    kotlin("plugin.serialization") version "1.5.10"
     id("com.github.johnrengelman.shadow") version "7.0.0"
 }
 
@@ -16,7 +17,19 @@ repositories {
     jcenter()
 }
 
+buildscript {
+    repositories { mavenCentral() }
+
+    dependencies {
+        val kotlinVersion = "1.5.10"
+        classpath(kotlin("gradle-plugin", version = kotlinVersion))
+        classpath(kotlin("serialization", version = kotlinVersion))
+    }
+}
+
 dependencies {
+    implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.2.2")
+    implementation("org.jetbrains.kotlinx:kotlinx-datetime:0.2.1")
     implementation("com.rabbitmq:amqp-client:5.13.0")
     implementation("com.viartemev:the-white-rabbit:0.0.6")
     implementation("com.zaxxer:HikariCP:5.0.0")
@@ -26,7 +39,6 @@ dependencies {
     implementation("org.jetbrains.exposed:exposed-java-time:0.33.1")
     implementation("io.insert-koin:koin-core:3.1.2")
     implementation("org.postgresql:postgresql:42.2.23")
-    implementation("com.google.code.gson:gson:2.8.7")
 }
 
 tasks {

src/main/kotlin/api/ApiObject.kt

@@ -1,10 +1,11 @@
 package api
 
-import com.google.gson.annotations.SerializedName
-import java.time.LocalDate
+import kotlinx.datetime.LocalDate
+import kotlinx.serialization.Serializable
 
+@Serializable
 data class ApiObject(
-    @SerializedName("tag") val tag: String,
-    @SerializedName("device_id") val device_id: Int,
-    @SerializedName("device_date") val device_date: LocalDate
+    val tag: String,
+    val device_id: Int,
+    val device_date: LocalDate
 )

src/main/kotlin/database/service/SampleObjectService.kt

@@ -2,6 +2,7 @@ package database.service
 
 import database.model.SampleObject
 import api.ApiObject
+import kotlinx.datetime.toJavaLocalDate
 import org.jetbrains.exposed.sql.transactions.transaction
 
 class SampleObjectService : ISampleObjectService {
@@ -10,7 +11,7 @@ class SampleObjectService : ISampleObjectService {
         transaction {
             SampleObject.new {
                 tag = apiObject.tag
-                device_date = apiObject.device_date
+                device_date = apiObject.device_date.toJavaLocalDate()
                 device_id = apiObject.device_id
             }
         }

src/main/kotlin/mq/DatabaseConsumer.kt

@@ -1,15 +1,15 @@
 package mq
 
 import api.ApiObject
-import com.google.gson.GsonBuilder
+import kotlinx.serialization.json.*
 import com.rabbitmq.client.*
 import database.service.ISampleObjectService
+import kotlinx.serialization.decodeFromString
 import org.koin.core.component.KoinComponent
 import org.koin.core.component.inject
 
 class DatabaseConsumer (channel: Channel) : Consumer, KoinComponent {
     private val resultObjectService: ISampleObjectService by inject()
-    private val gson = GsonBuilder().setDateFormat("yyyy-MM-dd'T'HH:mm:ssz").create()
     private val basicChannel = channel
     override fun handleConsumeOk(consumerTag: String?) {
     }
@@ -38,9 +38,9 @@ class DatabaseConsumer (channel: Channel) : Consumer, KoinComponent {
     ) {
         try {
             val rawJson = body!!.toString(Charsets.UTF_8)
-            val apiObject = gson.fromJson(rawJson, ApiObject::class.java)
+            val apiObject = Json.decodeFromString<ApiObject>(rawJson)
             resultObjectService.addOne(apiObject)
-            basicChannel.basicAck(envelope!!.deliveryTag, false)
+            basicChannel.basicAck(envelope!!.deliveryTag,false)
         } catch (e: Exception) {
             println(e.message)
             basicChannel.basicNack(envelope!!.deliveryTag, false, true)