mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-11-13 17:14:23 -08:00
zfs: move Linux-specific code out of zfs.go
Avoid Linux-specific code scattered in two places by moving it to the already-existing zfs_linux.go. Signed-off-by: Daniel Swarbrick <daniel.swarbrick@gmail.com>
This commit is contained in:
Daniel Swarbrick
Johannes 'fish' Ziemke
parent
11f93d3da1
commit
fafc973e94
145
collector/zfs.go
145
collector/zfs.go
|
|
@ -11,148 +11,7 @@
|
|||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
//go:build linux && !nozfs
|
||||
// +build linux,!nozfs
|
||||
//go:build !nozfs
|
||||
// +build !nozfs
|
||||
|
||||
package collector
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"log/slog"
|
||||
"strings"
|
||||
|
||||
"github.com/prometheus/client_golang/prometheus"
|
||||
)
|
||||
|
||||
var errZFSNotAvailable = errors.New("ZFS / ZFS statistics are not available")
|
||||
|
||||
type zfsSysctl string
|
||||
|
||||
func init() {
|
||||
registerCollector("zfs", defaultEnabled, NewZFSCollector)
|
||||
}
|
||||
|
||||
type zfsCollector struct {
|
||||
linuxProcpathBase string
|
||||
linuxZpoolIoPath string
|
||||
linuxZpoolObjsetPath string
|
||||
linuxZpoolStatePath string
|
||||
linuxPathMap map[string]string
|
||||
logger *slog.Logger
|
||||
}
|
||||
|
||||
// NewZFSCollector returns a new Collector exposing ZFS statistics.
|
||||
func NewZFSCollector(logger *slog.Logger) (Collector, error) {
|
||||
return &zfsCollector{
|
||||
linuxProcpathBase: "spl/kstat/zfs",
|
||||
linuxZpoolIoPath: "/*/io",
|
||||
linuxZpoolObjsetPath: "/*/objset-*",
|
||||
linuxZpoolStatePath: "/*/state",
|
||||
linuxPathMap: map[string]string{
|
||||
"zfs_abd": "abdstats",
|
||||
"zfs_arc": "arcstats",
|
||||
"zfs_dbuf": "dbufstats",
|
||||
"zfs_dmu_tx": "dmu_tx",
|
||||
"zfs_dnode": "dnodestats",
|
||||
"zfs_fm": "fm",
|
||||
"zfs_vdev_cache": "vdev_cache_stats", // vdev_cache is deprecated
|
||||
"zfs_vdev_mirror": "vdev_mirror_stats",
|
||||
"zfs_xuio": "xuio_stats", // no known consumers of the XUIO interface on Linux exist
|
||||
"zfs_zfetch": "zfetchstats",
|
||||
"zfs_zil": "zil",
|
||||
},
|
||||
logger: logger,
|
||||
}, nil
|
||||
}
|
||||
|
||||
func (c *zfsCollector) Update(ch chan<- prometheus.Metric) error {
|
||||
|
||||
if _, err := c.openProcFile(c.linuxProcpathBase); err != nil {
|
||||
if err == errZFSNotAvailable {
|
||||
c.logger.Debug(err.Error())
|
||||
return ErrNoData
|
||||
}
|
||||
}
|
||||
|
||||
for subsystem := range c.linuxPathMap {
|
||||
if err := c.updateZfsStats(subsystem, ch); err != nil {
|
||||
if err == errZFSNotAvailable {
|
||||
c.logger.Debug(err.Error())
|
||||
// ZFS /proc files are added as new features to ZFS arrive, it is ok to continue
|
||||
continue
|
||||
}
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
// Pool stats
|
||||
return c.updatePoolStats(ch)
|
||||
}
|
||||
|
||||
func (s zfsSysctl) metricName() string {
|
||||
parts := strings.Split(string(s), ".")
|
||||
return strings.Replace(parts[len(parts)-1], "-", "_", -1)
|
||||
}
|
||||
|
||||
func (c *zfsCollector) constSysctlMetric(subsystem string, sysctl zfsSysctl, value float64) prometheus.Metric {
|
||||
metricName := sysctl.metricName()
|
||||
|
||||
return prometheus.MustNewConstMetric(
|
||||
prometheus.NewDesc(
|
||||
prometheus.BuildFQName(namespace, subsystem, metricName),
|
||||
string(sysctl),
|
||||
nil,
|
||||
nil,
|
||||
),
|
||||
prometheus.UntypedValue,
|
||||
value,
|
||||
)
|
||||
}
|
||||
|
||||
func (c *zfsCollector) constPoolMetric(poolName string, sysctl zfsSysctl, value uint64) prometheus.Metric {
|
||||
metricName := sysctl.metricName()
|
||||
|
||||
return prometheus.MustNewConstMetric(
|
||||
prometheus.NewDesc(
|
||||
prometheus.BuildFQName(namespace, "zfs_zpool", metricName),
|
||||
string(sysctl),
|
||||
[]string{"zpool"},
|
||||
nil,
|
||||
),
|
||||
prometheus.UntypedValue,
|
||||
float64(value),
|
||||
poolName,
|
||||
)
|
||||
}
|
||||
|
||||
func (c *zfsCollector) constPoolObjsetMetric(poolName string, datasetName string, sysctl zfsSysctl, value uint64) prometheus.Metric {
|
||||
metricName := sysctl.metricName()
|
||||
|
||||
return prometheus.MustNewConstMetric(
|
||||
prometheus.NewDesc(
|
||||
prometheus.BuildFQName(namespace, "zfs_zpool_dataset", metricName),
|
||||
string(sysctl),
|
||||
[]string{"zpool", "dataset"},
|
||||
nil,
|
||||
),
|
||||
prometheus.UntypedValue,
|
||||
float64(value),
|
||||
poolName,
|
||||
datasetName,
|
||||
)
|
||||
}
|
||||
|
||||
func (c *zfsCollector) constPoolStateMetric(poolName string, stateName string, isActive uint64) prometheus.Metric {
|
||||
return prometheus.MustNewConstMetric(
|
||||
prometheus.NewDesc(
|
||||
prometheus.BuildFQName(namespace, "zfs_zpool", "state"),
|
||||
"kstat.zfs.misc.state",
|
||||
[]string{"zpool", "state"},
|
||||
nil,
|
||||
),
|
||||
prometheus.GaugeValue,
|
||||
float64(isActive),
|
||||
poolName,
|
||||
stateName,
|
||||
)
|
||||
}
|
||||
|
|
|
|||
|
|
@ -18,8 +18,10 @@ package collector
|
|||
|
||||
import (
|
||||
"bufio"
|
||||
"errors"
|
||||
"fmt"
|
||||
"io"
|
||||
"log/slog"
|
||||
"os"
|
||||
"path/filepath"
|
||||
"strconv"
|
||||
|
|
@ -41,7 +43,71 @@ const (
|
|||
// kstatDataString = "7"
|
||||
)
|
||||
|
||||
var zfsPoolStatesName = []string{"online", "degraded", "faulted", "offline", "removed", "unavail", "suspended"}
|
||||
var (
|
||||
errZFSNotAvailable = errors.New("ZFS / ZFS statistics are not available")
|
||||
|
||||
zfsPoolStatesName = []string{"online", "degraded", "faulted", "offline", "removed", "unavail", "suspended"}
|
||||
)
|
||||
|
||||
type zfsCollector struct {
|
||||
linuxProcpathBase string
|
||||
linuxZpoolIoPath string
|
||||
linuxZpoolObjsetPath string
|
||||
linuxZpoolStatePath string
|
||||
linuxPathMap map[string]string
|
||||
logger *slog.Logger
|
||||
}
|
||||
|
||||
func init() {
|
||||
registerCollector("zfs", defaultEnabled, NewZFSCollector)
|
||||
}
|
||||
|
||||
// NewZFSCollector returns a new Collector exposing ZFS statistics.
|
||||
func NewZFSCollector(logger *slog.Logger) (Collector, error) {
|
||||
return &zfsCollector{
|
||||
linuxProcpathBase: "spl/kstat/zfs",
|
||||
linuxZpoolIoPath: "/*/io",
|
||||
linuxZpoolObjsetPath: "/*/objset-*",
|
||||
linuxZpoolStatePath: "/*/state",
|
||||
linuxPathMap: map[string]string{
|
||||
"zfs_abd": "abdstats",
|
||||
"zfs_arc": "arcstats",
|
||||
"zfs_dbuf": "dbufstats",
|
||||
"zfs_dmu_tx": "dmu_tx",
|
||||
"zfs_dnode": "dnodestats",
|
||||
"zfs_fm": "fm",
|
||||
"zfs_vdev_cache": "vdev_cache_stats", // vdev_cache is deprecated
|
||||
"zfs_vdev_mirror": "vdev_mirror_stats",
|
||||
"zfs_xuio": "xuio_stats", // no known consumers of the XUIO interface on Linux exist
|
||||
"zfs_zfetch": "zfetchstats",
|
||||
"zfs_zil": "zil",
|
||||
},
|
||||
logger: logger,
|
||||
}, nil
|
||||
}
|
||||
|
||||
func (c *zfsCollector) Update(ch chan<- prometheus.Metric) error {
|
||||
if _, err := c.openProcFile(c.linuxProcpathBase); err != nil {
|
||||
if err == errZFSNotAvailable {
|
||||
c.logger.Debug(err.Error())
|
||||
return ErrNoData
|
||||
}
|
||||
}
|
||||
|
||||
for subsystem := range c.linuxPathMap {
|
||||
if err := c.updateZfsStats(subsystem, ch); err != nil {
|
||||
if err == errZFSNotAvailable {
|
||||
c.logger.Debug(err.Error())
|
||||
// ZFS /proc files are added as new features to ZFS arrive, it is ok to continue
|
||||
continue
|
||||
}
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
// Pool stats
|
||||
return c.updatePoolStats(ch)
|
||||
}
|
||||
|
||||
func (c *zfsCollector) openProcFile(path string) (*os.File, error) {
|
||||
file, err := os.Open(procFilePath(path))
|
||||
|
|
@ -304,3 +370,73 @@ func (c *zfsCollector) parsePoolStateFile(reader io.Reader, zpoolPath string, ha
|
|||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (c *zfsCollector) constSysctlMetric(subsystem string, sysctl zfsSysctl, value float64) prometheus.Metric {
|
||||
metricName := sysctl.metricName()
|
||||
|
||||
return prometheus.MustNewConstMetric(
|
||||
prometheus.NewDesc(
|
||||
prometheus.BuildFQName(namespace, subsystem, metricName),
|
||||
string(sysctl),
|
||||
nil,
|
||||
nil,
|
||||
),
|
||||
prometheus.UntypedValue,
|
||||
value,
|
||||
)
|
||||
}
|
||||
|
||||
func (c *zfsCollector) constPoolMetric(poolName string, sysctl zfsSysctl, value uint64) prometheus.Metric {
|
||||
metricName := sysctl.metricName()
|
||||
|
||||
return prometheus.MustNewConstMetric(
|
||||
prometheus.NewDesc(
|
||||
prometheus.BuildFQName(namespace, "zfs_zpool", metricName),
|
||||
string(sysctl),
|
||||
[]string{"zpool"},
|
||||
nil,
|
||||
),
|
||||
prometheus.UntypedValue,
|
||||
float64(value),
|
||||
poolName,
|
||||
)
|
||||
}
|
||||
|
||||
func (c *zfsCollector) constPoolObjsetMetric(poolName string, datasetName string, sysctl zfsSysctl, value uint64) prometheus.Metric {
|
||||
metricName := sysctl.metricName()
|
||||
|
||||
return prometheus.MustNewConstMetric(
|
||||
prometheus.NewDesc(
|
||||
prometheus.BuildFQName(namespace, "zfs_zpool_dataset", metricName),
|
||||
string(sysctl),
|
||||
[]string{"zpool", "dataset"},
|
||||
nil,
|
||||
),
|
||||
prometheus.UntypedValue,
|
||||
float64(value),
|
||||
poolName,
|
||||
datasetName,
|
||||
)
|
||||
}
|
||||
|
||||
func (c *zfsCollector) constPoolStateMetric(poolName string, stateName string, isActive uint64) prometheus.Metric {
|
||||
return prometheus.MustNewConstMetric(
|
||||
prometheus.NewDesc(
|
||||
prometheus.BuildFQName(namespace, "zfs_zpool", "state"),
|
||||
"kstat.zfs.misc.state",
|
||||
[]string{"zpool", "state"},
|
||||
nil,
|
||||
),
|
||||
prometheus.GaugeValue,
|
||||
float64(isActive),
|
||||
poolName,
|
||||
stateName,
|
||||
)
|
||||
}
|
||||
|
||||
type zfsSysctl string
|
||||
|
||||
func (s zfsSysctl) metricName() string {
|
||||
parts := strings.Split(string(s), ".")
|
||||
return strings.Replace(parts[len(parts)-1], "-", "_", -1)
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue