slf4j-bridge - trace and annotations for logger

slf4j-bridge/src/main/java/org/slf4j/helpers/ZioLoggerBase.java

@@ -26,7 +26,7 @@ public ZioLoggerBase(String name) {
 
     abstract protected void log(Level level, Marker marker, String messagePattern, Object[] arguments, Throwable throwable);
 
-    abstract protected boolean isEnabled(String name, Level level);
+    abstract protected boolean isEnabled(Level level);
 
     private void logWithThrowable(Level level, Marker marker, String msg, Throwable t) {
         log(level, marker, msg, null, t);
@@ -56,27 +56,27 @@ private void logWithArgs(Level level, Marker marker, String msg, Object[] args)
 
     @Override
     public boolean isTraceEnabled() {
-        return isEnabled(name, Level.TRACE);
+        return isEnabled(Level.TRACE);
     }
 
     @Override
     public boolean isDebugEnabled() {
-        return isEnabled(name, Level.DEBUG);
+        return isEnabled(Level.DEBUG);
     }
 
     @Override
     public boolean isErrorEnabled() {
-        return isEnabled(name, Level.ERROR);
+        return isEnabled(Level.ERROR);
     }
 
     @Override
     public boolean isWarnEnabled() {
-        return isEnabled(name, Level.WARN);
+        return isEnabled(Level.WARN);
     }
 
     @Override
     public boolean isInfoEnabled() {
-        return isEnabled(name, Level.INFO);
+        return isEnabled(Level.INFO);
     }
 
     @Override

slf4j-bridge/src/main/scala/org/slf4j/impl/LoggerRuntime.scala

@@ -17,17 +17,18 @@ package org.slf4j.impl
 
 import org.slf4j.Marker
 import org.slf4j.event.Level
+import zio.logging.slf4j.bridge.LoggerData
 
 trait LoggerRuntime {
 
   def log(
-    name: String,
+    logger: LoggerData,
     level: Level,
     marker: Marker,
     messagePattern: String,
     arguments: Array[AnyRef],
     throwable: Throwable
   ): Unit
 
-  def isEnabled(name: String, level: Level): Boolean
+  def isEnabled(logger: LoggerData, level: Level): Boolean
 }

slf4j-bridge/src/main/scala/org/slf4j/impl/ZioLogger.scala

@@ -18,16 +18,19 @@ package org.slf4j.impl
 import org.slf4j.Marker
 import org.slf4j.event.Level
 import org.slf4j.helpers.ZioLoggerBase
+import zio.logging.slf4j.bridge.LoggerData
 
 final class ZioLogger(name: String, factory: ZioLoggerFactory) extends ZioLoggerBase(name) {
+  private val data: LoggerData = LoggerData(name)
+
   override protected def log(
     level: Level,
     marker: Marker,
     messagePattern: String,
     arguments: Array[AnyRef],
     throwable: Throwable
   ): Unit =
-    factory.log(name, level, marker, messagePattern, arguments, throwable)
+    factory.log(data, level, marker, messagePattern, arguments, throwable)
 
-  override protected def isEnabled(name: String, level: Level): Boolean = factory.isEnabled(name, level)
+  override protected def isEnabled(level: Level): Boolean = factory.isEnabled(data, level)
 }

slf4j-bridge/src/main/scala/org/slf4j/impl/ZioLoggerFactory.scala

@@ -17,6 +17,7 @@ package org.slf4j.impl
 
 import org.slf4j.event.Level
 import org.slf4j.{ ILoggerFactory, Logger, Marker }
+import zio.logging.slf4j.bridge.LoggerData
 
 import java.util.concurrent.ConcurrentHashMap
 import scala.jdk.CollectionConverters._
@@ -29,17 +30,17 @@ class ZioLoggerFactory extends ILoggerFactory {
     this.runtime = runtime
 
   private[impl] def log(
-    name: String,
+    logger: LoggerData,
     level: Level,
     marker: Marker,
     messagePattern: String,
     arguments: Array[AnyRef],
     throwable: Throwable
   ): Unit =
-    if (runtime != null) runtime.log(name, level, marker, messagePattern, arguments, throwable)
+    if (runtime != null) runtime.log(logger, level, marker, messagePattern, arguments, throwable)
 
-  private[impl] def isEnabled(name: String, level: Level): Boolean =
-    if (runtime != null) runtime.isEnabled(name, level) else false
+  private[impl] def isEnabled(logger: LoggerData, level: Level): Boolean =
+    if (runtime != null) runtime.isEnabled(logger, level) else false
 
   override def getLogger(name: String): Logger =
     loggers.getOrElseUpdate(name, new ZioLogger(name, this))

slf4j-bridge/src/main/scala/zio/logging/slf4j/bridge/LoggerData.scala

@@ -0,0 +1,26 @@
+/*
+ * Copyright 2019-2024 John A. De Goes and the ZIO Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package zio.logging.slf4j.bridge
+
+import zio.Trace
+
+final case class LoggerData(name: String) {
+
+  lazy val trace: Trace = Trace(name, "", 0)
+
+  lazy val annotations: Map[String, String] = Map(zio.logging.loggerNameAnnotationKey -> name)
+
+}

slf4j-bridge/src/main/scala/zio/logging/slf4j/bridge/ZioLoggerRuntime.scala

@@ -20,12 +20,12 @@ import org.slf4j.event.Level
 import org.slf4j.helpers.MessageFormatter
 import org.slf4j.impl.LoggerRuntime
 import zio.logging.LogFilter
-import zio.{ Cause, Fiber, FiberId, FiberRef, FiberRefs, LogLevel, Runtime, Trace, Unsafe }
+import zio.{Cause, Fiber, FiberId, FiberRef, FiberRefs, LogLevel, Runtime, Unsafe}
 
 final class ZioLoggerRuntime(runtime: Runtime[Any], filter: LogFilter[Any]) extends LoggerRuntime {
 
   override def log(
-    name: String,
+    logger: LoggerData,
     level: Level,
     marker: Marker,
     messagePattern: String,
@@ -34,7 +34,7 @@ final class ZioLoggerRuntime(runtime: Runtime[Any], filter: LogFilter[Any]) exte
   ): Unit =
     Unsafe.unsafe { implicit u =>
       val logLevel     = ZioLoggerRuntime.logLevelMapping(level)
-      val trace        = Trace.empty
+      val trace        = logger.trace
       val fiberId      = FiberId.Gen.Live.make(trace)
       val currentFiber = Fiber._currentFiber.get()
 
@@ -44,8 +44,8 @@ final class ZioLoggerRuntime(runtime: Runtime[Any], filter: LogFilter[Any]) exte
         runtime.fiberRefs.joinAs(fiberId)(currentFiber.unsafe.getFiberRefs())
       }
 
-      val logSpan    = zio.LogSpan(name, java.lang.System.currentTimeMillis())
-      val loggerName = (zio.logging.loggerNameAnnotationKey -> name)
+      val logSpan    = zio.LogSpan(logger.name, java.lang.System.currentTimeMillis())
+      val loggerName = (zio.logging.loggerNameAnnotationKey -> logger.name)
 
       val fiberRefs = currentFiberRefs
         .updatedAs(fiberId)(FiberRef.currentLogSpan, logSpan :: currentFiberRefs.getOrDefault(FiberRef.currentLogSpan))
@@ -71,18 +71,18 @@ final class ZioLoggerRuntime(runtime: Runtime[Any], filter: LogFilter[Any]) exte
       fiberRuntime.log(() => msg, cause, Some(logLevel), trace)
     }
 
-  override def isEnabled(name: String, level: Level): Boolean = {
+  override def isEnabled(logger: LoggerData, level: Level): Boolean = {
     val logLevel = ZioLoggerRuntime.logLevelMapping(level)
 
     filter(
-      Trace(name, "", 0),
+      logger.trace,
       FiberId.None,
       logLevel,
       () => "",
       Cause.empty,
       FiberRefs.empty,
       List.empty,
-      Map(zio.logging.loggerNameAnnotationKey -> name)
+      logger.annotations
     )
   }