1 files changed, 49 insertions, 0 deletions
diff --git a/kamon-core/src/legacy-main/scala/kamon/util/logger/LazyLogger.scala b/kamon-core/src/legacy-main/scala/kamon/util/logger/LazyLogger.scala
new file mode 100644
index 00000000..11be7bbe
--- /dev/null
+++ b/kamon-core/src/legacy-main/scala/kamon/util/logger/LazyLogger.scala
@@ -0,0 +1,49 @@
+/* =========================================================================================
+ * Copyright © 2013-2015 the kamon project <http://kamon.io/>
+ *
+ * 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 kamon.util.logger
+
+import org.slf4j.{Logger ⇒ SLF4JLogger}
+
+class LazyLogger(val logger: SLF4JLogger) {
+
+  @inline final def isTraceEnabled = logger.isTraceEnabled
+  @inline final def trace(msg: ⇒ String): Unit = if (isTraceEnabled) logger.trace(msg.toString)
+  @inline final def trace(msg: ⇒ String, t: ⇒ Throwable): Unit = if (isTraceEnabled) logger.trace(msg, t)
+
+  @inline final def isDebugEnabled = logger.isDebugEnabled
+  @inline final def debug(msg: ⇒ String): Unit = if (isDebugEnabled) logger.debug(msg.toString)
+  @inline final def debug(msg: ⇒ String, t: ⇒ Throwable): Unit = if (isDebugEnabled) logger.debug(msg, t)
+
+  @inline final def isErrorEnabled = logger.isErrorEnabled
+  @inline final def error(msg: ⇒ String): Unit = if (isErrorEnabled) logger.error(msg.toString)
+  @inline final def error(msg: ⇒ String, t: ⇒ Throwable): Unit = if (isErrorEnabled) logger.error(msg, t)
+
+  @inline final def isInfoEnabled = logger.isInfoEnabled
+  @inline final def info(msg: ⇒ String): Unit = if (isInfoEnabled) logger.info(msg.toString)
+  @inline final def info(msg: ⇒ String, t: ⇒ Throwable): Unit = if (isInfoEnabled) logger.info(msg, t)
+
+  @inline final def isWarnEnabled = logger.isWarnEnabled
+  @inline final def warn(msg: ⇒ String): Unit = if (isWarnEnabled) logger.warn(msg.toString)
+  @inline final def warn(msg: ⇒ String, t: ⇒ Throwable): Unit = if (isWarnEnabled) logger.warn(msg, t)
+}
+
+object LazyLogger {
+  import scala.reflect.{classTag, ClassTag}
+
+  def apply(name: String): LazyLogger = new LazyLogger(org.slf4j.LoggerFactory.getLogger(name))
+  def apply(cls: Class[_]): LazyLogger = apply(cls.getName)
+  def apply[C: ClassTag](): LazyLogger = apply(classTag[C].runtimeClass.getName)
+}
+\ No newline at end of file