Bridge JUL to SLF4J, fix docker build

Author: adamw

backend/src/main/resources/application.conf

@@ -28,8 +28,6 @@ db {
   migrate-on-start = ${?MIGRATE_ON_START}
 
   driver = "org.postgresql.Driver"
-
-  connect-thread-pool-size = 32
 }
 
 email {

backend/src/main/resources/logback.xml

@@ -1,6 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
-<configuration scan="true">
+<configuration>
+  <contextListener class="ch.qos.logback.classic.jul.LevelChangePropagator">
+    <resetJUL>true</resetJUL>
+  </contextListener>
+
   <if condition='p("LOGBACK_JSON_ENCODE").equals("true")'>
     <then>
       <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
@@ -31,5 +35,4 @@
   <root level="${LOG_LEVEL:-INFO}">
     <appender-ref ref="STDOUT"/>
   </root>
-
 </configuration>

backend/src/main/scala/com/softwaremill/bootzooka/Main.scala

@@ -3,8 +3,13 @@ package com.softwaremill.bootzooka
 import com.softwaremill.bootzooka.logging.Logging
 import ox.logback.InheritableMDC
 import ox.{IO, Ox, OxApp, never}
+import org.slf4j.bridge.SLF4JBridgeHandler
 
 object Main extends OxApp.Simple with Logging:
+  // route JUL to SLF4J
+  SLF4JBridgeHandler.removeHandlersForRootLogger()
+  SLF4JBridgeHandler.install()
+
   InheritableMDC.init
   Thread.setDefaultUncaughtExceptionHandler((t, e) => logger.error("Uncaught exception in thread: " + t, e))
 

backend/src/main/scala/com/softwaremill/bootzooka/infrastructure/DBConfig.scala

@@ -4,5 +4,4 @@ import com.softwaremill.bootzooka.config.Sensitive
 import pureconfig.ConfigReader
 import pureconfig.generic.derivation.default.*
 
-case class DBConfig(username: String, password: Sensitive, url: String, migrateOnStart: Boolean, driver: String, connectThreadPoolSize: Int)
-    derives ConfigReader
+case class DBConfig(username: String, password: Sensitive, url: String, migrateOnStart: Boolean, driver: String) derives ConfigReader

build.sbt

@@ -43,6 +43,7 @@ val jsonDependencies = Seq(
 
 val loggingDependencies = Seq(
   "ch.qos.logback" % "logback-classic" % "1.5.8",
+  "org.slf4j" % "jul-to-slf4j" % "1.7.36", // forward e.g. otel logs which use JUL to SLF4J
   "com.softwaremill.ox" %% "mdc-logback" % oxVersion,
   "org.codehaus.janino" % "janino" % "3.1.12" % Runtime,
   "net.logstash.logback" % "logstash-logback-encoder" % "8.0" % Runtime
@@ -181,7 +182,15 @@ lazy val backend: Project = (project in file("backend"))
       streams.value.log.info(s"Copying the webapp resources from $source to $target")
       IO.copyDirectory(source, target)
     },
-    copyWebapp := copyWebapp.dependsOn(yarnTask.toTask(" build")).value,
+    copyWebapp := copyWebapp
+      .dependsOn(
+        Def
+          .sequential(
+            generateOpenAPIDescription,
+            yarnTask.toTask(" build")
+          )
+      )
+      .value,
     generateOpenAPIDescription := Def.taskDyn {
       val log = streams.value.log
       val targetPath = ((Compile / target).value / "openapi.yaml").toString