Kiu/Node_Exporter
Kiu/Node_Exporter
1
0
Fork 0
mirror of https://github.com/prometheus/node_exporter.git synced 2024-11-23 12:30:46 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

Get the graph list and register metrics on demand

Browse Source 
Instead of registering them when getting the graph list.
This commit is contained in:
Johannes 'fish' Ziemke 2013-06-26 16:31:00 +02:00
parent 1dbe3de133
commit d38d0a7730
1 changed files with 30 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

57
exporter/munin_collector.go
View File

@ -155,38 +155,36 @@ func (c *muninCollector) muninConfig(name string) (config map[string]map[string]
return config, graphConfig, err return config, graphConfig, err
} }
func (c *muninCollector) registerMetrics() (err error) {
func (c *muninCollector) registerMetric(name string) (err error) {
configs, graphConfig, err := c.muninConfig(name)
if err != nil {
return fmt.Errorf("Couldn't get config for graph %s: %s", name, err)
}
for metric, config := range configs {
metricName := strings.Replace(name+"-"+metric, ".", "_", -1)
desc := graphConfig["graph_title"] + ": " + config["label"]
if config["info"] != "" {
desc = desc + ", " + config["info"]
}
gauge := prometheus.NewGauge()
debug(c.Name(), "Register %s: %s", metricName, desc)
c.gaugePerMetric[metricName] = gauge
c.registry.Register(metricName, desc, prometheus.NilLabels, gauge)
}
return nil
}
func (c *muninCollector) Update() (updates int, err error) {
items, err := c.muninList() items, err := c.muninList()
if err != nil { if err != nil {
return fmt.Errorf("Couldn't get graph list: %s", err) return updates, fmt.Errorf("Couldn't get graph list: %s", err)
} }
for _, name := range items { for _, name := range items {
c.graphs = append(c.graphs, name) c.graphs = append(c.graphs, name)
configs, graphConfig, err := c.muninConfig(name)
if err != nil {
return fmt.Errorf("Couldn't get config for graph %s: %s", name, err)
}
for metric, config := range configs {
metricName := strings.Replace(name+"-"+metric, ".", "_", -1)
desc := graphConfig["graph_title"] + ": " + config["label"]
if config["info"] != "" {
desc = desc + ", " + config["info"]
}
gauge := prometheus.NewGauge()
debug(c.Name(), "Register %s: %s", metricName, desc)
c.gaugePerMetric[metricName] = gauge
c.registry.Register(metricName, desc, prometheus.NilLabels, gauge)
}
}
return err
}
func (c *muninCollector) Update() (updates int, err error) {
err = c.registerMetrics()
if err != nil {
return updates, fmt.Errorf("Couldn't register metrics: %s", err)
} }
for _, graph := range c.graphs { for _, graph := range c.graphs {
@ -215,6 +213,12 @@ func (c *muninCollector) Update() (updates int, err error) {
continue continue
} }
key, value_s := strings.Split(parts[0], ".")[0], parts[1] key, value_s := strings.Split(parts[0], ".")[0], parts[1]
name := graph + "-" + key
if _, ok := c.gaugePerMetric[name]; !ok {
if err := c.registerMetric(name); err != nil {
return updates, err
}
}
value, err := strconv.ParseFloat(value_s, 64) value, err := strconv.ParseFloat(value_s, 64)
if err != nil { if err != nil {
debug(c.Name(), "Couldn't parse value in line %s, malformed?", line) debug(c.Name(), "Couldn't parse value in line %s, malformed?", line)
@ -223,7 +227,6 @@ func (c *muninCollector) Update() (updates int, err error) {
labels := map[string]string{ labels := map[string]string{
"hostname": c.hostname, "hostname": c.hostname,
} }
name := graph + "-" + key
debug(c.Name(), "Set %s{%s}: %f\n", name, labels, value) debug(c.Name(), "Set %s{%s}: %f\n", name, labels, value)
c.gaugePerMetric[name].Set(labels, value) c.gaugePerMetric[name].Set(labels, value)
updates++ updates++