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The two things that gather metrics (the debug server and the periodic Metron notifier) now take a map of metric keys to things that provide them. This is a prefactor before only enabling certain metrics when an image plugin is not configured. [#140552475] Signed-off-by: Craig Furman <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,77 +1,3 @@ | ||
| package metrics | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "fmt" | ||
| "io/ioutil" | ||
| "os/exec" | ||
| "runtime" | ||
|
|
||
| "code.cloudfoundry.org/lager" | ||
| ) | ||
|
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| //go:generate counterfeiter . Metrics | ||
|
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| type Metrics interface { | ||
| NumCPU() int | ||
| NumGoroutine() int | ||
| LoopDevices() int | ||
| BackingStores() int | ||
| DepotDirs() int | ||
| } | ||
|
|
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| type metrics struct { | ||
| backingStoresPath string | ||
| depotPath string | ||
| logger lager.Logger | ||
| } | ||
|
|
||
| func NewMetrics(logger lager.Logger, backingStoresPath, depotPath string) Metrics { | ||
| return &metrics{ | ||
| backingStoresPath: backingStoresPath, | ||
| depotPath: depotPath, | ||
| logger: logger.Session("metrics"), | ||
| } | ||
| } | ||
|
|
||
| func (m *metrics) NumCPU() int { | ||
| return runtime.NumCPU() | ||
| } | ||
|
|
||
| func (m *metrics) NumGoroutine() int { | ||
| return runtime.NumGoroutine() | ||
| } | ||
|
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| func (m *metrics) LoopDevices() int { | ||
| devices, err := exec.Command("losetup", "-a").CombinedOutput() | ||
| if err != nil { | ||
| m.logger.Error("cannot-get-loop-devices", fmt.Errorf("%s, out: %s", err, string(devices))) | ||
| return -1 | ||
| } | ||
| return bytes.Count(devices, []byte("\n")) | ||
| } | ||
|
|
||
| func (m *metrics) BackingStores() int { | ||
| if m.backingStoresPath == "" { | ||
| // graph is disabled | ||
| return -1 | ||
| } | ||
|
|
||
| entries, err := ioutil.ReadDir(m.backingStoresPath) | ||
| if err != nil { | ||
| m.logger.Error("cannot-get-backing-stores", err) | ||
| return -1 | ||
| } | ||
|
|
||
| return len(entries) | ||
| } | ||
|
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| func (m *metrics) DepotDirs() int { | ||
| entries, err := ioutil.ReadDir(m.depotPath) | ||
| if err != nil { | ||
| m.logger.Error("cannot-get-depot-dirs", err) | ||
| return -1 | ||
| } | ||
|
|
||
| return len(entries) | ||
| } | ||
| type Metrics map[string]func() int |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| package metrics | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "fmt" | ||
| "io/ioutil" | ||
| "os/exec" | ||
| "runtime" | ||
|
|
||
| "code.cloudfoundry.org/lager" | ||
| ) | ||
|
|
||
| type MetricsProvider struct { | ||
| backingStoresPath string | ||
| depotPath string | ||
| logger lager.Logger | ||
| } | ||
|
|
||
| func NewMetricsProvider(logger lager.Logger, backingStoresPath, depotPath string) *MetricsProvider { | ||
| return &MetricsProvider{ | ||
| backingStoresPath: backingStoresPath, | ||
| depotPath: depotPath, | ||
| logger: logger.Session("metrics"), | ||
| } | ||
| } | ||
|
|
||
| func (m *MetricsProvider) NumCPU() int { | ||
| return runtime.NumCPU() | ||
| } | ||
|
|
||
| func (m *MetricsProvider) NumGoroutine() int { | ||
| return runtime.NumGoroutine() | ||
| } | ||
|
|
||
| func (m *MetricsProvider) LoopDevices() int { | ||
| devices, err := exec.Command("losetup", "-a").CombinedOutput() | ||
| if err != nil { | ||
| m.logger.Error("cannot-get-loop-devices", fmt.Errorf("%s, out: %s", err, string(devices))) | ||
| return -1 | ||
| } | ||
| return bytes.Count(devices, []byte("\n")) | ||
| } | ||
|
|
||
| func (m *MetricsProvider) BackingStores() int { | ||
| if m.backingStoresPath == "" { | ||
| // graph is disabled | ||
| return -1 | ||
| } | ||
|
|
||
| entries, err := ioutil.ReadDir(m.backingStoresPath) | ||
| if err != nil { | ||
| m.logger.Error("cannot-get-backing-stores", err) | ||
| return -1 | ||
| } | ||
|
|
||
| return len(entries) | ||
| } | ||
|
|
||
| func (m *MetricsProvider) DepotDirs() int { | ||
| entries, err := ioutil.ReadDir(m.depotPath) | ||
| if err != nil { | ||
| m.logger.Error("cannot-get-depot-dirs", err) | ||
| return -1 | ||
| } | ||
|
|
||
| return len(entries) | ||
| } |
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