bosun.org@v0.0.0-20210513094433-e25bc3e69a1f/cmd/scollector/collectors/metadata_linux.go (about)

     1  package collectors
     2  
     3  import (
     4  	"errors"
     5  	"io/ioutil"
     6  	"net"
     7  	"strconv"
     8  	"strings"
     9  	"time"
    10  
    11  	"bosun.org/metadata"
    12  	"bosun.org/opentsdb"
    13  	"bosun.org/util"
    14  )
    15  
    16  func init() {
    17  	collectors = append(collectors, &IntervalCollector{F: c_meta_linux_version, Interval: time.Minute * 30})
    18  	collectors = append(collectors, &IntervalCollector{F: c_meta_linux_serial, Interval: time.Minute * 30})
    19  	collectors = append(collectors, &IntervalCollector{F: c_meta_linux_ifaces, Interval: time.Minute * 30})
    20  }
    21  
    22  func c_meta_linux_version() (opentsdb.MultiDataPoint, error) {
    23  	var md opentsdb.MultiDataPoint
    24  	_ = util.ReadCommand(func(line string) error {
    25  		metadata.AddMeta("", nil, "uname", line, true)
    26  		return nil
    27  	}, "uname", "-a")
    28  	if !readOSRelease() {
    29  		readIssue()
    30  	}
    31  	return md, nil
    32  }
    33  
    34  func readOSRelease() bool {
    35  	var found bool
    36  	_ = readLine("/etc/os-release", func(s string) error {
    37  		fields := strings.SplitN(s, "=", 2)
    38  		if len(fields) != 2 {
    39  			return nil
    40  		}
    41  		if fields[0] == "PRETTY_NAME" {
    42  			metadata.AddMeta("", nil, "version", strings.Trim(fields[1], `"`), true)
    43  			found = true
    44  		}
    45  		return nil
    46  	})
    47  	return found
    48  }
    49  
    50  func readIssue() {
    51  	_ = util.ReadCommand(func(line string) error {
    52  		fields := strings.Fields(line)
    53  		hasNum := false
    54  		for i := 0; i < len(fields); {
    55  			if strings.HasPrefix(fields[i], `\`) {
    56  				fields = append(fields[:i], fields[i+1:]...)
    57  			} else {
    58  				if v, _ := strconv.ParseFloat(fields[i], 32); v > 0 {
    59  					hasNum = true
    60  				}
    61  				i++
    62  			}
    63  		}
    64  		if !hasNum {
    65  			return nil
    66  		}
    67  		metadata.AddMeta("", nil, "version", strings.Join(fields, " "), true)
    68  		return nil
    69  	}, "cat", "/etc/issue")
    70  }
    71  
    72  func c_meta_linux_serial() (opentsdb.MultiDataPoint, error) {
    73  	var md opentsdb.MultiDataPoint
    74  	_ = util.ReadCommand(func(line string) error {
    75  		fields := strings.SplitN(line, ":", 2)
    76  		if len(fields) != 2 {
    77  			return nil
    78  		}
    79  		switch fields[0] {
    80  		case "\tSerial Number":
    81  			metadata.AddMeta("", nil, "serialNumber", strings.TrimSpace(fields[1]), true)
    82  		case "\tManufacturer":
    83  			metadata.AddMeta("", nil, "manufacturer", strings.TrimSpace(fields[1]), true)
    84  		case "\tProduct Name":
    85  			metadata.AddMeta("", nil, "model", strings.TrimSpace(fields[1]), true)
    86  		}
    87  		return nil
    88  	}, "dmidecode", "-t", "system")
    89  	return md, nil
    90  }
    91  
    92  var doneErr = errors.New("")
    93  
    94  // metaLinuxIfacesMaster returns the bond master from s or "" if none exists.
    95  func metaLinuxIfacesMaster(line string) string {
    96  	sp := strings.Fields(line)
    97  	for i := 4; i < len(sp); i += 2 {
    98  		if sp[i-1] == "master" {
    99  			return sp[i]
   100  		}
   101  	}
   102  	return ""
   103  }
   104  
   105  func c_meta_linux_ifaces() (opentsdb.MultiDataPoint, error) {
   106  	var md opentsdb.MultiDataPoint
   107  	metaIfaces(func(iface net.Interface, tags opentsdb.TagSet) {
   108  		if speed, err := ioutil.ReadFile("/sys/class/net/" + iface.Name + "/speed"); err == nil {
   109  			v, _ := strconv.Atoi(strings.TrimSpace(string(speed)))
   110  			if v > 0 {
   111  				const MbitToBit = 1e6
   112  				metadata.AddMeta("", tags, "speed", v*MbitToBit, true)
   113  			}
   114  		}
   115  		_ = util.ReadCommand(func(line string) error {
   116  			if v := metaLinuxIfacesMaster(line); v != "" {
   117  				metadata.AddMeta("", tags, "master", v, true)
   118  				return doneErr
   119  			}
   120  			return nil
   121  		}, "ip", "-o", "addr", "show", iface.Name)
   122  	})
   123  	return md, nil
   124  }