add statreader

2016-12-25 16:39:16 -06:00
parent a15d4c4dfe
commit e2231d8835
4 changed files with 85 additions and 60 deletions
@@ -0,0 +1,37 @@
+package main
+
+import (
+	"github.com/fsouza/go-dockerclient"
+)
+
+type StatReader struct {
+	CPUUtil  int
+	MemUsage int64
+	MemLimit int64
+	//MemPercent int64
+	lastCpu    float64
+	lastSysCpu float64
+}
+
+func (s *StatReader) Read(stats *docker.Stats) {
+	s.ReadCPU(stats)
+	s.ReadMem(stats)
+}
+
+func (s *StatReader) ReadCPU(stats *docker.Stats) {
+	ncpus := float64(len(stats.CPUStats.CPUUsage.PercpuUsage))
+	total := float64(stats.CPUStats.CPUUsage.TotalUsage)
+	system := float64(stats.CPUStats.SystemCPUUsage)
+
+	cpudiff := total - s.lastCpu
+	syscpudiff := system - s.lastSysCpu
+	s.CPUUtil = round((cpudiff / syscpudiff * 100) * ncpus)
+	s.lastCpu = total
+	s.lastSysCpu = system
+}
+
+func (s *StatReader) ReadMem(stats *docker.Stats) {
+	s.MemUsage = int64(stats.MemoryStats.Usage)
+	s.MemLimit = int64(stats.MemoryStats.Limit)
+	//s.MemPercent = round((float64(cur) / float64(limit)) * 100)
+}