mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-09-20 08:07:31 -07:00
e213ccbc57
Removed all global types that were unnecessary, and refactored to use constructor-created values and inline values instead of globals. Signed-Off-By: Joe Handzik <joseph.t.handzik@hpe.com>
87 lines
2.3 KiB
Go
87 lines
2.3 KiB
Go
// Copyright 2016 The Prometheus Authors
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package collector
|
|
|
|
import (
|
|
"bufio"
|
|
"fmt"
|
|
"io"
|
|
"os"
|
|
"path/filepath"
|
|
"strconv"
|
|
"strings"
|
|
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
"github.com/prometheus/common/log"
|
|
)
|
|
|
|
func (c *zfsCollector) openProcFile(path string) (file *os.File, err error) {
|
|
file, err = os.Open(procFilePath(path))
|
|
if err != nil {
|
|
log.Debugf("Cannot open %q for reading. Is the kernel module loaded?", procFilePath(path))
|
|
err = zfsNotAvailableError
|
|
}
|
|
return
|
|
}
|
|
|
|
func (c *zfsCollector) updateZfsStats(subsystem string, ch chan<- prometheus.Metric) (err error) {
|
|
file, err := c.openProcFile(filepath.Join(c.linuxProcpathBase, c.linuxPathMap[subsystem]))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer file.Close()
|
|
|
|
return c.parseProcfsFile(file, c.linuxPathMap[subsystem], func(s zfsSysctl, v int) {
|
|
ch <- c.constSysctlMetric(subsystem, s, v)
|
|
})
|
|
}
|
|
|
|
func (c *zfsCollector) parseProcfsFile(reader io.Reader, fmtExt string, handler func(zfsSysctl, int)) (err error) {
|
|
scanner := bufio.NewScanner(reader)
|
|
|
|
parseLine := false
|
|
for scanner.Scan() {
|
|
|
|
parts := strings.Fields(scanner.Text())
|
|
|
|
if !parseLine && len(parts) == 3 && parts[0] == "name" && parts[1] == "type" && parts[2] == "data" {
|
|
// Start parsing from here.
|
|
parseLine = true
|
|
continue
|
|
}
|
|
|
|
if !parseLine || len(parts) < 3 {
|
|
continue
|
|
}
|
|
|
|
key := fmt.Sprintf("kstat.zfs.misc.%s.%s", fmtExt, parts[0])
|
|
|
|
value, err := strconv.Atoi(parts[2])
|
|
if err != nil {
|
|
return fmt.Errorf("could not parse expected integer value for %q", key)
|
|
}
|
|
handler(zfsSysctl(key), value)
|
|
|
|
}
|
|
if !parseLine {
|
|
return fmt.Errorf("did not parse a single %q metric", fmtExt)
|
|
}
|
|
|
|
return scanner.Err()
|
|
}
|
|
|
|
func (c *zfsCollector) updatePoolStats(ch chan<- prometheus.Metric) (err error) {
|
|
return nil
|
|
}
|