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refactor metrics, support prometheus
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,116 @@ | ||
| package metrics | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "os" | ||
|
|
||
| statsdlib "github.com/CMGS/statsd" | ||
| "github.com/projecteru2/core/types" | ||
| "github.com/projecteru2/core/utils" | ||
| "github.com/prometheus/client_golang/prometheus" | ||
| log "github.com/sirupsen/logrus" | ||
| ) | ||
|
|
||
| const ( | ||
| memStats = "eru.node.mem" | ||
| deployCount = "eru.core.%s.deploy.count" | ||
| ) | ||
|
|
||
| // Metrics define metrics | ||
| type Metrics struct { | ||
| StatsdAddr string | ||
| Hostname string | ||
|
|
||
| MemoryCapacity *prometheus.GaugeVec | ||
| DeployCount *prometheus.CounterVec | ||
| } | ||
|
|
||
| func (m *Metrics) gauge(keyPattern string, data map[string]float64) error { | ||
| remote, err := statsdlib.New(m.StatsdAddr) | ||
| if err != nil { | ||
| log.Errorf("[gauge] Connect statsd failed: %v", err) | ||
| return err | ||
| } | ||
| defer remote.Close() | ||
| defer remote.Flush() | ||
| for k, v := range data { | ||
| key := fmt.Sprintf("%s.%s", keyPattern, k) | ||
| remote.Gauge(key, v) | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func (m *Metrics) count(key string, n int, rate float32) error { | ||
| remote, err := statsdlib.New(m.StatsdAddr) | ||
| if err != nil { | ||
| log.Errorf("[count] Connect statsd failed: %v", err) | ||
| return err | ||
| } | ||
| defer remote.Close() | ||
| defer remote.Flush() | ||
| remote.Count(key, n, rate) | ||
| return nil | ||
| } | ||
|
|
||
| // SendMemCap update memory capacity | ||
| func (m *Metrics) SendMemCap(cpumemmap map[string]types.CPUAndMem) { | ||
| log.Info("[Metrics] Update memory capacity gauge") | ||
| data := map[string]float64{} | ||
| for node, cpuandmem := range cpumemmap { | ||
| nodename := utils.CleanStatsdMetrics(node) | ||
| capacity := float64(cpuandmem.MemCap) | ||
| data[nodename] = capacity | ||
| if m.MemoryCapacity != nil { | ||
| m.MemoryCapacity.WithLabelValues(nodename).Set(capacity) | ||
| } | ||
| } | ||
|
|
||
| if m.StatsdAddr == "" { | ||
| return | ||
| } | ||
|
|
||
| if err := m.gauge(memStats, data); err != nil { | ||
| log.Errorf("[SendMemCap] Error occured while sending data to statsd: %v", err) | ||
| } | ||
| } | ||
|
|
||
| // SendDeployCount update deploy counter | ||
| func (m *Metrics) SendDeployCount(n int) { | ||
| log.Info("[Metrics] Update deploy counter") | ||
| if m.DeployCount != nil { | ||
| m.DeployCount.WithLabelValues(m.Hostname).Add(float64(n)) | ||
| } | ||
|
|
||
| if m.StatsdAddr == "" { | ||
| return | ||
| } | ||
| key := fmt.Sprintf(deployCount, m.Hostname) | ||
| if err := m.count(key, n, 1.0); err != nil { | ||
| log.Errorf("[SendDeployCount] Error occured while counting: %v", err) | ||
| } | ||
| } | ||
|
|
||
| // Client is a metrics obj | ||
| var Client = Metrics{} | ||
|
|
||
| // InitMetrics new a metrics obj | ||
| func InitMetrics(statsd string) error { | ||
| hostname, err := os.Hostname() | ||
| if err != nil { | ||
| return err | ||
| } | ||
| Client = Metrics{StatsdAddr: statsd, Hostname: utils.CleanStatsdMetrics(hostname)} | ||
|
|
||
| Client.MemoryCapacity = prometheus.NewGaugeVec(prometheus.GaugeOpts{ | ||
| Name: "memory_capacity", | ||
| Help: "node avaliable memory.", | ||
| }, []string{"nodename"}) | ||
|
|
||
| Client.DeployCount = prometheus.NewCounterVec(prometheus.CounterOpts{ | ||
| Name: "core_deploy", | ||
| Help: "core deploy counter", | ||
| }, []string{"hostname"}) | ||
|
|
||
| prometheus.MustRegister(Client.DeployCount, Client.MemoryCapacity) | ||
| return nil | ||
| } |
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