func GetCpuTimes() (*CpuTimes, error) {
cpu := sigar.Cpu{}
err := cpu.Get()
if err != nil {
return nil, err
}
return &CpuTimes{Cpu: cpu}, nil
}
func (p ubuntu) GetCpuStats() (stats CpuStats, err error) {
cpu := sigar.Cpu{}
err = cpu.Get()
if err != nil {
return
}
stats.User = cpu.User
stats.Sys = cpu.Sys
stats.Wait = cpu.Wait
stats.Total = cpu.Total()
return
}
func (s sigarStatsCollector) GetCpuStats() (stats CpuStats, err error) {
cpu := sigar.Cpu{}
err = cpu.Get()
if err != nil {
err = bosherr.WrapError(err, "Getting Sigar Cpu")
return
}
stats.User = cpu.User
stats.Sys = cpu.Sys
stats.Wait = cpu.Wait
stats.Total = cpu.Total()
return
}
statFile = procd + "/stat"
cpu = sigar.Cpu{}
statContents := []byte("cpu 25 1 2 3 4 5 6 7")
err = ioutil.WriteFile(statFile, statContents, 0644)
Expect(err).ToNot(HaveOccurred())
})
AfterEach(func() {
sigar.Procd = "/proc"
})
Describe("Get", func() {
It("gets CPU usage", func() {
err := cpu.Get()
Expect(err).ToNot(HaveOccurred())
Expect(cpu.User).To(Equal(uint64(25)))
})
})
Describe("CollectCpuStats", func() {
It("collects CPU usage over time", func() {
concreteSigar := &sigar.ConcreteSigar{}
cpuUsages, stop := concreteSigar.CollectCpuStats(500 * time.Millisecond)
Expect(<-cpuUsages).To(Equal(sigar.Cpu{
User: uint64(25),
Nice: uint64(1),
Sys: uint64(2),
Idle: uint64(3),
statFile string
cpu sigar.Cpu
)
BeforeEach(func() {
statFile = procd + "/stat"
cpu = sigar.Cpu{}
})
Describe("Get", func() {
It("gets CPU usage", func() {
statContents := []byte("cpu 25 1 2 3 4 5 6 7")
err := ioutil.WriteFile(statFile, statContents, 0644)
Expect(err).ToNot(HaveOccurred())
err = cpu.Get()
Expect(err).ToNot(HaveOccurred())
Expect(cpu.User).To(Equal(uint64(25)))
})
It("ignores empty lines", func() {
statContents := []byte("cpu ")
err := ioutil.WriteFile(statFile, statContents, 0644)
Expect(err).ToNot(HaveOccurred())
err = cpu.Get()
Expect(err).ToNot(HaveOccurred())
Expect(cpu.User).To(Equal(uint64(0)))
})
})