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Process feedback from the code review. 

- Use the right number of printf() arguments. Use %q where it makes sense.
- Use "DRBD" instead of "Drbd", per Go's style guide.
- Add _total suffixes to counter metrics.
- Mention the unit (bytes) in documentation strings once more.
pull/365/head
Ed Schouten 8 years ago
parent
d1fa279105
commit
b7daf27678
2 changed files with 52 additions and 52 deletions
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  1. 66
      collector/drbd_linux.go
  2. 38
      collector/fixtures/e2e-output.txt

66
collector/drbd_linux.go
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@ -31,7 +31,7 @@ type drbdNumericalMetric struct {
multiplier float64
}
func newDrbdNumericalMetric(name string, desc string, valueType prometheus.ValueType, multiplier float64) drbdNumericalMetric {
func newDRBDNumericalMetric(name string, desc string, valueType prometheus.ValueType, multiplier float64) drbdNumericalMetric {
return drbdNumericalMetric{
desc: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, "drbd", name),
@ -55,7 +55,7 @@ func (metric *drbdStringPairMetric) isOkay(value string) float64 {
return 0
}
func newDrbdStringPairMetric(name string, desc string, valueOkay string) drbdStringPairMetric {
func newDRBDStringPairMetric(name string, desc string, valueOkay string) drbdStringPairMetric {
return drbdStringPairMetric{
desc: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, "drbd", name),
@ -67,73 +67,73 @@ func newDrbdStringPairMetric(name string, desc string, valueOkay string) drbdStr
var (
drbdNumericalMetrics = map[string]drbdNumericalMetric{
"ns": newDrbdNumericalMetric(
"network_sent_bytes",
"Volume of net data sent to the partner via the network connection.",
"ns": newDRBDNumericalMetric(
"network_sent_bytes_total",
"Volume of net data sent to the partner via the network connection; in bytes.",
prometheus.CounterValue,
1024),
"nr": newDrbdNumericalMetric(
"network_received_bytes",
"Volume of net data received by the partner via the network connection.",
"nr": newDRBDNumericalMetric(
"network_received_bytes_total",
"Volume of net data received by the partner via the network connection; in bytes.",
prometheus.CounterValue,
1),
"dw": newDrbdNumericalMetric(
"disk_written_bytes",
"Net data written on local hard disk.",
"dw": newDRBDNumericalMetric(
"disk_written_bytes_total",
"Net data written on local hard disk; in bytes.",
prometheus.CounterValue,
1024),
"dr": newDrbdNumericalMetric(
"disk_read_bytes",
"Net data read from local hard disk.",
"dr": newDRBDNumericalMetric(
"disk_read_bytes_total",
"Net data read from local hard disk; in bytes.",
prometheus.CounterValue,
1024),
"al": newDrbdNumericalMetric(
"activitylog_writes",
"al": newDRBDNumericalMetric(
"activitylog_writes_total",
"Number of updates of the activity log area of the meta data.",
prometheus.CounterValue,
1),
"bm": newDrbdNumericalMetric(
"bitmap_writes",
"bm": newDRBDNumericalMetric(
"bitmap_writes_total",
"Number of updates of the bitmap area of the meta data.",
prometheus.CounterValue,
1),
"lo": newDrbdNumericalMetric(
"lo": newDRBDNumericalMetric(
"local_pending",
"Number of open requests to the local I/O sub-system.",
prometheus.GaugeValue,
1),
"pe": newDrbdNumericalMetric(
"pe": newDRBDNumericalMetric(
"remote_pending",
"Number of requests sent to the partner, but that have not yet been answered by the latter.",
prometheus.GaugeValue,
1),
"ua": newDrbdNumericalMetric(
"ua": newDRBDNumericalMetric(
"remote_unacknowledged",
"Number of requests received by the partner via the network connection, but that have not yet been answered.",
prometheus.GaugeValue,
1),
"ap": newDrbdNumericalMetric(
"ap": newDRBDNumericalMetric(
"application_pending",
"Number of block I/O requests forwarded to DRBD, but not yet answered by DRBD.",
prometheus.GaugeValue,
1),
"ep": newDrbdNumericalMetric(
"ep": newDRBDNumericalMetric(
"epochs",
"Number of Epochs currently on the fly.",
prometheus.GaugeValue,
1),
"oos": newDrbdNumericalMetric(
"oos": newDRBDNumericalMetric(
"out_of_sync_bytes",
"Amount of data known to be out of sync.",
"Amount of data known to be out of sync; in bytes.",
prometheus.GaugeValue,
1024),
}
drbdStringPairMetrics = map[string]drbdStringPairMetric{
"ro": newDrbdStringPairMetric(
"ro": newDRBDStringPairMetric(
"node_role_is_primary",
"Whether the role of the node is in the primary state.",
"Primary"),
"ds": newDrbdStringPairMetric(
"ds": newDRBDStringPairMetric(
"disk_state_is_up_to_date",
"Whether the disk of the node is up to date.",
"UpToDate"),
@ -148,10 +148,10 @@ var (
type drbdCollector struct{}
func init() {
Factories["drbd"] = NewDrbdCollector
Factories["drbd"] = newDRBDCollector
}
func NewDrbdCollector() (Collector, error) {
func newDRBDCollector() (Collector, error) {
return &drbdCollector{}, nil
}
@ -160,7 +160,7 @@ func (c *drbdCollector) Update(ch chan<- prometheus.Metric) (err error) {
file, err := os.Open(statsFile)
if err != nil {
if os.IsNotExist(err) {
log.Debugf("Not collecting DRBD statistics, as %s does not exist: %s", statsFile)
log.Debugf("Not collecting DRBD statistics, as %s does not exist: %s", statsFile, err)
return nil
}
return err
@ -195,7 +195,7 @@ func (c *drbdCollector) Update(ch chan<- prometheus.Metric) (err error) {
metric.isOkay(values[1]), device, "remote")
} else if kv[0] == "cs" {
// Connection state.
var connected float64 = 0
var connected float64
if kv[1] == "Connected" {
connected = 1
}
@ -203,10 +203,10 @@ func (c *drbdCollector) Update(ch chan<- prometheus.Metric) (err error) {
drbdConnected, prometheus.GaugeValue,
connected, device)
} else {
log.Infof("Don't know how to process key-value pair [%s: %s]", kv[0], kv[1])
log.Infof("Don't know how to process key-value pair [%s: %q]", kv[0], kv[1])
}
} else {
log.Infof("Don't know how to process string %s", field)
log.Infof("Don't know how to process string %q", field)
}
}
return scanner.Err()

38
collector/fixtures/e2e-output.txt
Unescape View File

@ -375,45 +375,45 @@ node_disk_writes_merged{device="nvme0n1"} 43950
node_disk_writes_merged{device="sda"} 1.1134226e+07
node_disk_writes_merged{device="sr0"} 0
node_disk_writes_merged{device="vda"} 2.0711856e+07
# HELP node_drbd_activitylog_writes Number of updates of the activity log area of the meta data.
# TYPE node_drbd_activitylog_writes counter
node_drbd_activitylog_writes{device="drbd1"} 1100
# HELP node_drbd_activitylog_writes_total Number of updates of the activity log area of the meta data.
# TYPE node_drbd_activitylog_writes_total counter
node_drbd_activitylog_writes_total{device="drbd1"} 1100
# HELP node_drbd_application_pending Number of block I/O requests forwarded to DRBD, but not yet answered by DRBD.
# TYPE node_drbd_application_pending gauge
node_drbd_application_pending{device="drbd1"} 12348
# HELP node_drbd_bitmap_writes Number of updates of the bitmap area of the meta data.
# TYPE node_drbd_bitmap_writes counter
node_drbd_bitmap_writes{device="drbd1"} 221
# HELP node_drbd_bitmap_writes_total Number of updates of the bitmap area of the meta data.
# TYPE node_drbd_bitmap_writes_total counter
node_drbd_bitmap_writes_total{device="drbd1"} 221
# HELP node_drbd_connected Whether DRBD is connected to the partner.
# TYPE node_drbd_connected gauge
node_drbd_connected{device="drbd1"} 1
# HELP node_drbd_disk_read_bytes Net data read from local hard disk.
# TYPE node_drbd_disk_read_bytes counter
node_drbd_disk_read_bytes{device="drbd1"} 1.2154539008e+11
# HELP node_drbd_disk_read_bytes_total Net data read from local hard disk; in bytes.
# TYPE node_drbd_disk_read_bytes_total counter
node_drbd_disk_read_bytes_total{device="drbd1"} 1.2154539008e+11
# HELP node_drbd_disk_state_is_up_to_date Whether the disk of the node is up to date.
# TYPE node_drbd_disk_state_is_up_to_date gauge
node_drbd_disk_state_is_up_to_date{device="drbd1",node="local"} 1
node_drbd_disk_state_is_up_to_date{device="drbd1",node="remote"} 1
# HELP node_drbd_disk_written_bytes Net data written on local hard disk.
# TYPE node_drbd_disk_written_bytes counter
node_drbd_disk_written_bytes{device="drbd1"} 2.8941845504e+10
# HELP node_drbd_disk_written_bytes_total Net data written on local hard disk; in bytes.
# TYPE node_drbd_disk_written_bytes_total counter
node_drbd_disk_written_bytes_total{device="drbd1"} 2.8941845504e+10
# HELP node_drbd_epochs Number of Epochs currently on the fly.
# TYPE node_drbd_epochs gauge
node_drbd_epochs{device="drbd1"} 1
# HELP node_drbd_local_pending Number of open requests to the local I/O sub-system.
# TYPE node_drbd_local_pending gauge
node_drbd_local_pending{device="drbd1"} 12345
# HELP node_drbd_network_received_bytes Volume of net data received by the partner via the network connection.
# TYPE node_drbd_network_received_bytes counter
node_drbd_network_received_bytes{device="drbd1"} 1.0961011e+07
# HELP node_drbd_network_sent_bytes Volume of net data sent to the partner via the network connection.
# TYPE node_drbd_network_sent_bytes counter
node_drbd_network_sent_bytes{device="drbd1"} 1.7740228608e+10
# HELP node_drbd_network_received_bytes_total Volume of net data received by the partner via the network connection; in bytes.
# TYPE node_drbd_network_received_bytes_total counter
node_drbd_network_received_bytes_total{device="drbd1"} 1.0961011e+07
# HELP node_drbd_network_sent_bytes_total Volume of net data sent to the partner via the network connection; in bytes.
# TYPE node_drbd_network_sent_bytes_total counter
node_drbd_network_sent_bytes_total{device="drbd1"} 1.7740228608e+10
# HELP node_drbd_node_role_is_primary Whether the role of the node is in the primary state.
# TYPE node_drbd_node_role_is_primary gauge
node_drbd_node_role_is_primary{device="drbd1",node="local"} 1
node_drbd_node_role_is_primary{device="drbd1",node="remote"} 1
# HELP node_drbd_out_of_sync_bytes Amount of data known to be out of sync.
# HELP node_drbd_out_of_sync_bytes Amount of data known to be out of sync; in bytes.
# TYPE node_drbd_out_of_sync_bytes gauge
node_drbd_out_of_sync_bytes{device="drbd1"} 1.2645376e+07
# HELP node_drbd_remote_pending Number of requests sent to the partner, but that have not yet been answered by the latter.

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