update dependencies

build.gradle.kts

@@ -4,11 +4,11 @@ plugins {
     jacoco
 
     id("maven-publish")
-    id("org.jetbrains.kotlin.jvm") version "1.3.50"
+    kotlin("jvm") version "1.4.30"
 
-    id("org.jlleitschuh.gradle.ktlint") version "8.2.0"
+    id("org.jlleitschuh.gradle.ktlint") version "10.0.0"
-    id("org.owasp.dependencycheck") version "5.1.0"
+    id("org.owasp.dependencycheck") version "6.1.1"
-    id("fr.coppernic.versioning") version "3.1.2"
+    id("fr.coppernic.versioning") version "3.2.1"
 }
 
 group = "com.github.flecomte"
@@ -29,17 +29,17 @@ tasks.withType<KotlinCompile> {
 
 dependencies {
     implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk8")
-    implementation("org.jetbrains.kotlin:kotlin-reflect:1.3.31")
+    implementation("org.jetbrains.kotlin:kotlin-reflect:1.4.31")
-    implementation("com.fasterxml.jackson.module:jackson-module-kotlin:2.9.9")
+    implementation("com.fasterxml.jackson.module:jackson-module-kotlin:2.12.1")
-    implementation("com.fasterxml.jackson.datatype:jackson-datatype-joda:2.9.9")
+    implementation("com.fasterxml.jackson.datatype:jackson-datatype-joda:2.12.1")
-    implementation("com.github.jasync-sql:jasync-postgresql:1.0.7")
+    implementation("com.github.jasync-sql:jasync-postgresql:1.1.7")
-    implementation("org.slf4j:slf4j-api:1.7.26")
+    implementation("org.slf4j:slf4j-api:1.7.30")
 
     testImplementation("ch.qos.logback:logback-classic:1.2.3")
     testImplementation("ch.qos.logback:logback-core:1.2.3")
-    testImplementation("io.mockk:mockk:1.9")
+    testImplementation("io.mockk:mockk:1.10.6")
-    testImplementation("org.junit.jupiter:junit-jupiter:5.4.2")
+    testImplementation("org.junit.jupiter:junit-jupiter:5.7.1")
-    testImplementation("org.amshove.kluent:kluent:1.47")
+    testImplementation("org.amshove.kluent:kluent:1.65")
 }
 
 val sourcesJar by tasks.creating(Jar::class) {

gradle/wrapper/gradle-wrapper.properties

@@ -1,4 +1,4 @@
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.2-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.8-bin.zip
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStorePath=wrapper/dists

src/main/kotlin/fr/postgresjson/connexion/Connection.kt

@@ -25,17 +25,26 @@ class Connection(
     private val host: String = "localhost",
     private val port: Int = 5432
 ) : Executable {
-    private lateinit var connection: ConnectionPool<PostgreSQLConnection>
+    private var connection: ConnectionPool<PostgreSQLConnection>? = null
     private val serializer = Serializer()
     private val logger: Logger? by LoggerDelegate()
 
     internal fun connect(): ConnectionPool<PostgreSQLConnection> {
-        if (!::connection.isInitialized || !connection.isConnected()) {
+        return connection.let { connectionPool ->
-            connection = PostgreSQLConnectionBuilder.createConnectionPool(
+            if (connectionPool == null || !connectionPool.isConnected()) {
-                "jdbc:postgresql://$host:$port/$database?user=$username&password=$password"
+                PostgreSQLConnectionBuilder.createConnectionPool(
-            )
+                    "jdbc:postgresql://$host:$port/$database?user=$username&password=$password"
+                ).also {
+                    connection = it
+                }
+            } else {
+                connectionPool
+            }
         }
-        return connection
+    }
+
+    fun disconnect() {
+        connection?.run { disconnect() }
     }
 
     fun <A> inTransaction(f: (Connection) -> CompletableFuture<A>) = connect().inTransaction(f)