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package xyz.driver.core
package logging
import java.text.SimpleDateFormat
import java.util.Date
import ch.qos.logback.classic.spi.ILoggingEvent
import ch.qos.logback.core.LayoutBase
import org.apache.commons.lang3.StringUtils
class DriverLayout extends LayoutBase[ILoggingEvent] {
import scala.collection.JavaConverters._
private val FieldSeparator = "="
private val DateFormatString = "MM/dd/yyyy HH:mm:ss"
private val newline = System.getProperty("line.separator")
private val IgnoredClassesInStack = Set("org.apache.catalina", "org.apache.coyote", "sun.reflect", "javax.servlet")
override def doLayout(loggingEvent: ILoggingEvent): String = {
val date = new SimpleDateFormat(DateFormatString).format(new Date(loggingEvent.getTimeStamp))
val level = StringUtils.rightPad(loggingEvent.getLevel.toString, 5)
val message = new StringBuilder(s"$date [$level] - ${loggingEvent.getMessage}$newline")
logContext(message, loggingEvent)
Option(loggingEvent.getCallerData) foreach { stacktrace =>
val stacktraceLength = stacktrace.length
if (stacktraceLength > 0) {
val location = stacktrace.head
val _ = message
.append(s"Location: ${location.getClassName}.${location.getMethodName}:${location.getLineNumber}$newline")
.append(s"Exception: ${location.toString}$newline")
if (stacktraceLength > 1) {
message.append(stacktrace.tail.filterNot { e =>
IgnoredClassesInStack.forall(ignored => !e.getClassName.startsWith(ignored))
} map {
_.toString
} mkString newline)
}
}
}
message.toString
}
private def logContext(message: StringBuilder, loggingEvent: ILoggingEvent) = {
Option(loggingEvent.getMDCPropertyMap).map(_.asScala).filter(_.nonEmpty).foreach { context =>
message.append(
context map { case (key, value) => s"$key$FieldSeparator$value" } mkString ("Context: ", " ", newline)
)
}
}
}
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