func (cmd *GuardianCommand) wireMetricsProvider(log lager.Logger, depotPath, graphRoot string) metrics.Metrics {
var backingStoresPath string
if graphRoot != "" {
backingStoresPath = filepath.Join(graphRoot, "backing_stores")
}
return metrics.NewMetrics(log, backingStoresPath, depotPath)
}
Expect(ioutil.WriteFile(
filepath.Join(backingStorePath, "bs-1"), []byte("test"), 0660,
)).To(Succeed())
Expect(ioutil.WriteFile(
filepath.Join(backingStorePath, "bs-2"), []byte("test"), 0660,
)).To(Succeed())
depotPath, err = ioutil.TempDir("", "depotDirs")
Expect(err).NotTo(HaveOccurred())
Expect(os.Mkdir(filepath.Join(depotPath, "depot-1"), 0660)).To(Succeed())
Expect(os.Mkdir(filepath.Join(depotPath, "depot-2"), 0660)).To(Succeed())
Expect(os.Mkdir(filepath.Join(depotPath, "depot-3"), 0660)).To(Succeed())
Expect(err).ToNot(HaveOccurred())
logger = lagertest.NewTestLogger("test")
m = metrics.NewMetrics(logger, backingStorePath, depotPath)
})
AfterEach(func() {
Expect(os.RemoveAll(depotPath)).To(Succeed())
Expect(os.RemoveAll(backingStorePath)).To(Succeed())
})
It("should report the number of loop devices, backing store files and depotDirs", func() {
Expect(m.NumCPU()).To(Equal(runtime.NumCPU()))
Expect(m.NumGoroutine()).To(BeNumerically("~", runtime.NumGoroutine(), 2))
Expect(m.LoopDevices()).NotTo(BeNil())
Expect(m.BackingStores()).To(Equal(2))
Expect(m.DepotDirs()).To(Equal(3))
})