1 files changed, 91 insertions, 0 deletions
diff --git a/kamon-system-metrics/src/main/scala/kamon/system/SystemMetricsBanner.scala b/kamon-system-metrics/src/main/scala/kamon/system/SystemMetricsBanner.scala
new file mode 100644
index 00000000..99e09da9
--- /dev/null
+++ b/kamon-system-metrics/src/main/scala/kamon/system/SystemMetricsBanner.scala
@@ -0,0 +1,91 @@
+/*
+ * =========================================================================================
+ * Copyright © 2013-2014 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.system
+
+import akka.actor.ActorLogging
+import org.hyperic.sigar._
+
+import scala.util.control.NoStackTrace
+
+trait SystemMetricsBanner {
+  self: ActorLogging ⇒
+
+  def printBanner(sigar: Sigar) = {
+    val os = OperatingSystem.getInstance
+
+    def loadAverage(sigar: Sigar) = try {
+      val average = sigar.getLoadAverage
+      (average(0), average(1), average(2))
+    } catch {
+      case s: org.hyperic.sigar.SigarNotImplementedException ⇒ (0d, 0d, 0d)
+    }
+
+    def uptime(sigar: Sigar) = {
+      def formatUptime(uptime: Double): String = {
+        var retval: String = ""
+        val days: Int = uptime.toInt / (60 * 60 * 24)
+        var minutes: Int = 0
+        var hours: Int = 0
+
+        if (days != 0) {
+          retval += s"$days ${if (days > 1) "days" else "day"}, "
+        }
+
+        minutes = uptime.toInt / 60
+        hours = minutes / 60
+        hours %= 24
+        minutes %= 60
+
+        if (hours != 0) {
+          retval += hours + ":" + minutes
+        } else {
+          retval += minutes + " min"
+        }
+        retval
+      }
+
+      val uptime = sigar.getUptime
+      val now = System.currentTimeMillis()
+
+      s"up ${formatUptime(uptime.getUptime)}"
+    }
+
+    val message =
+      """
+        |
+        |  _____           _                 __  __      _        _          _                     _          _
+        | / ____|         | |               |  \/  |    | |      (_)        | |                   | |        | |
+        || (___  _   _ ___| |_ ___ _ __ ___ | \  / | ___| |_ _ __ _  ___ ___| |     ___   __ _  __| | ___  __| |
+        | \___ \| | | / __| __/ _ \ '_ ` _ \| |\/| |/ _ \ __| '__| |/ __/ __| |    / _ \ / _` |/ _` |/ _ \/ _` |
+        | ____) | |_| \__ \ ||  __/ | | | | | |  | |  __/ |_| |  | | (__\__ \ |___| (_) | (_| | (_| |  __/ (_| |
+        ||_____/ \__, |___/\__\___|_| |_| |_|_|  |_|\___|\__|_|  |_|\___|___/______\___/ \__,_|\__,_|\___|\__,_|
+        |         __/ |
+        |        |___/
+        |
+        |              [System Status]                                                    [OS Information]
+        |     |--------------------------------|                             |----------------------------------------|
+        |            Up Time: %-10s                                           Description: %s
+        |       Load Average: %-16s                                            Name: %s
+        |                                                                              Version: %s
+        |                                                                                 Arch: %s
+        |
+      """.stripMargin.format(uptime(sigar), os.getDescription, loadAverage(sigar), os.getName, os.getVersion, os.getArch)
+    log.info(message)
+  }
+
+  class UnexpectedSigarException(message: String) extends RuntimeException(message) with NoStackTrace
+}