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Add prometheus endpoint to support total Used storageInfo (#5988)

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Since we deprecated Total/Free we don't need to update
prometheus with those metrics. This PR also adds support
for caching implementation.
This commit is contained in:
Harshavardhana
2018-05-30 11:30:14 -07:00
committed by kannappanr
parent dd0db526d9
commit 5282639f3c
5 changed files with 40 additions and 25 deletions
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40
cmd/metrics.go
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@@ -84,6 +84,28 @@ func (c *minioCollector) Collect(ch chan<- prometheus.Metric) {
float64(globalConnStats.getTotalInputBytes()),
)
// Expose cache stats only if available
cacheObjLayer := newCacheObjectsFn()
if cacheObjLayer != nil {
cs := cacheObjLayer.StorageInfo(context.Background())
ch <- prometheus.MustNewConstMetric(
prometheus.NewDesc(
prometheus.BuildFQName("minio", "disk", "cache_storage_bytes"),
"Total cache capacity on current Minio server instance",
nil, nil),
prometheus.GaugeValue,
float64(cs.Total),
)
ch <- prometheus.MustNewConstMetric(
prometheus.NewDesc(
prometheus.BuildFQName("minio", "disk", "cache_storage_free_bytes"),
"Total cache available on current Minio server instance",
nil, nil),
prometheus.GaugeValue,
float64(cs.Free),
)
}
// Expose disk stats only if applicable
// Fetch disk space info
@@ -92,7 +114,9 @@ func (c *minioCollector) Collect(ch chan<- prometheus.Metric) {
if objLayer == nil {
return
}
s := objLayer.StorageInfo(context.Background())
// Gateways don't provide disk info
if s.Backend.Type == Unknown {
return
@@ -108,22 +132,14 @@ func (c *minioCollector) Collect(ch chan<- prometheus.Metric) {
totalDisks = s.Backend.OfflineDisks + s.Backend.OnlineDisks
}
// Total/Free Storage Bytes
// Total disk usage by current Minio server instance
ch <- prometheus.MustNewConstMetric(
prometheus.NewDesc(
prometheus.BuildFQName("minio", "disk", "storage_bytes"),
"Total disk storage available to current Minio server instance",
prometheus.BuildFQName("minio", "disk", "storage_used_bytes"),
"Total disk storage used by current Minio server instance",
nil, nil),
prometheus.GaugeValue,
float64(s.Total),
)
ch <- prometheus.MustNewConstMetric(
prometheus.NewDesc(
prometheus.BuildFQName("minio", "disk", "storage_free_bytes"),
"Total free disk storage available to current Minio server instance",
nil, nil),
prometheus.GaugeValue,
float64(s.Free),
float64(s.Used),
)
// Minio Total Disk/Offline Disk