From 3e177068398fa3aa41484ddc7e0b0fc50fdb9eec Mon Sep 17 00:00:00 2001
From: Octavian Cerna <octavian.cerna@gmail.com>
Date: Sun, 26 Jul 2020 23:48:49 +0300
Subject: [PATCH] Add a new metric smartctl_device_error_log_count for the
 SMART error log counts.

---
 metrics.go  | 12 ++++++++++++
 smartctl.go | 16 ++++++++++++++++
 2 files changed, 28 insertions(+)

diff --git a/metrics.go b/metrics.go
index a0a2f37..f08298b 100644
--- a/metrics.go
+++ b/metrics.go
@@ -188,4 +188,16 @@ var (
 		},
 		nil,
 	)
+	metricDeviceErrorLogCount = prometheus.NewDesc(
+		"smartctl_device_error_log_count",
+		"Device SMART error log count",
+		[]string{
+			"device",
+			"model_family",
+			"model_name",
+			"serial_number",
+			"error_log_type",
+		},
+		nil,
+	)
 )
diff --git a/smartctl.go b/smartctl.go
index 5d0c977..0958cf7 100644
--- a/smartctl.go
+++ b/smartctl.go
@@ -52,6 +52,7 @@ func (smart *SMARTctl) Collect() {
 	smart.mineDeviceSCTStatus()
 	smart.mineDeviceStatistics()
 	smart.mineDeviceStatus()
+	smart.mineDeviceErrorLog()
 }
 
 func (smart *SMARTctl) mineExitStatus() {
@@ -312,3 +313,18 @@ func (smart *SMARTctl) mineDeviceStatus() {
 		smart.device.serial,
 	)
 }
+
+func (smart *SMARTctl) mineDeviceErrorLog() {
+	for logType, status := range smart.json.Get("ata_smart_error_log").Map() {
+		smart.ch <- prometheus.MustNewConstMetric(
+			metricDeviceErrorLogCount,
+			prometheus.GaugeValue,
+			status.Get("count").Float(),
+			smart.device.device,
+			smart.device.family,
+			smart.device.model,
+			smart.device.serial,
+			logType,
+		)
+	}
+}