342 lines
6.3 KiB
Go
342 lines
6.3 KiB
Go
package nfsclient
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import (
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"bufio"
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"fmt"
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"log"
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"os"
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"strconv"
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"strings"
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"github.com/influxdata/telegraf"
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"github.com/influxdata/telegraf/plugins/inputs"
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)
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type NFSCLIENT struct {
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Fullstat bool
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}
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var sampleConfig = `
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# fullstat = true
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# Read more low-level metrics
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fullstat = false
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`
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func (n *NFSCLIENT) SampleConfig() string {
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return sampleConfig
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}
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func (n *NFSCLIENT) Description() string {
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return "Read per-mount NFS metrics from /proc/self/mountstats"
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}
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var eventsFields = []string{
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"inoderevalidates",
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"dentryrevalidates",
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"datainvalidates",
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"attrinvalidates",
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"vfsopen",
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"vfslookup",
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"vfspermission",
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"vfsupdatepage",
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"vfsreadpage",
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"vfsreadpages",
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"vfswritepage",
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"vfswritepages",
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"vfsreaddir",
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"vfssetattr",
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"vfsflush",
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"vfsfsync",
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"vfslock",
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"vfsrelease",
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"congestionwait",
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"setattrtrunc",
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"extendwrite",
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"sillyrenames",
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"shortreads",
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"shortwrites",
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"delay",
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"pnfsreads",
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"pnfswrites",
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}
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var bytesFields = []string{
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"normalreadbytes",
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"normalwritebytes",
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"directreadbytes",
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"directwritebytes",
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"serverreadbytes",
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"serverwritebytes",
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"readpages",
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"writepages",
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}
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var xprtudpFields = []string{
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// "port",
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"bind_count",
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"rpcsends",
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"rpcreceives",
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"badxids",
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"inflightsends",
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"backlogutil",
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}
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var xprttcpFields = []string{
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// "port",
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"bind_count",
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"connect_count",
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"connect_time",
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"idle_time",
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"rpcsends",
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"rpcreceives",
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"badxids",
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"inflightsends",
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"backlogutil",
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}
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var nfs3Fields = []string{
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"NULL",
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"GETATTR",
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"SETATTR",
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"LOOKUP",
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"ACCESS",
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"READLINK",
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"READ",
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"WRITE",
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"CREATE",
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"MKDIR",
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"SYMLINK",
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"MKNOD",
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"REMOVE",
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"RMDIR",
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"RENAME",
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"LINK",
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"READDIR",
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"READDIRPLUS",
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"FSSTAT",
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"FSINFO",
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"PATHCONF",
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"COMMIT",
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}
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var nfs4Fields = []string{
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"NULL",
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"READ",
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"WRITE",
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"COMMIT",
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"OPEN",
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"OPEN_CONFIRM",
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"OPEN_NOATTR",
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"OPEN_DOWNGRADE",
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"CLOSE",
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"SETATTR",
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"FSINFO",
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"RENEW",
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"SETCLIENTID",
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"SETCLIENTID_CONFIRM",
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"LOCK",
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"LOCKT",
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"LOCKU",
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"ACCESS",
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"GETATTR",
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"LOOKUP",
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"LOOKUP_ROOT",
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"REMOVE",
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"RENAME",
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"LINK",
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"SYMLINK",
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"CREATE",
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"PATHCONF",
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"STATFS",
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"READLINK",
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"READDIR",
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"SERVER_CAPS",
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"DELEGRETURN",
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"GETACL",
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"SETACL",
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"FS_LOCATIONS",
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"RELEASE_LOCKOWNER",
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"SECINFO",
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"FSID_PRESENT",
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"EXCHANGE_ID",
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"CREATE_SESSION",
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"DESTROY_SESSION",
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"SEQUENCE",
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"GET_LEASE_TIME",
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"RECLAIM_COMPLETE",
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"LAYOUTGET",
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"GETDEVICEINFO",
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"LAYOUTCOMMIT",
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"LAYOUTRETURN",
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"SECINFO_NO_NAME",
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"TEST_STATEID",
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"FREE_STATEID",
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"GETDEVICELIST",
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"BIND_CONN_TO_SESSION",
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"DESTROY_CLIENTID",
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"SEEK",
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"ALLOCATE",
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"DEALLOCATE",
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"LAYOUTSTATS",
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"CLONE",
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}
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var nfsopFields = []string{
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"ops",
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"trans",
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"timeouts",
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"bytes_sent",
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"bytes_recv",
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"queue_time",
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"response_time",
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"total_time",
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}
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func convert(line []string) []float64 {
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var nline []float64
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for _, l := range line[1:] {
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f, _ := strconv.ParseFloat(l, 64)
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nline = append(nline, f)
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}
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return nline
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}
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func In(list []string, val string) bool {
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for _, v := range list {
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if v == val {
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return true
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}
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}
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return false
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}
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func (n *NFSCLIENT) parseStat(mountpoint string, export string, version string, line []string, acc telegraf.Accumulator) error {
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tags := map[string]string{"mountpoint": mountpoint, "serverexport": export}
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nline := convert(line)
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first := strings.Replace(line[0], ":", "", 1)
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var fields = make(map[string]interface{})
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if version == "3" || version == "4" {
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if In(nfs3Fields, first) {
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if first == "READ" {
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fields["read_ops"] = nline[0]
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fields["read_retrans"] = (nline[1] - nline[0])
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fields["read_bytes"] = (nline[3] + nline[4])
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fields["read_rtt"] = nline[6]
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fields["read_exe"] = nline[7]
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acc.AddFields("nfsstat_read", fields, tags)
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} else if first == "WRITE" {
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fields["write_ops"] = nline[0]
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fields["write_retrans"] = (nline[1] - nline[0])
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fields["write_bytes"] = (nline[3] + nline[4])
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fields["write_rtt"] = nline[6]
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fields["write_exe"] = nline[7]
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acc.AddFields("nfsstat_write", fields, tags)
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}
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}
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}
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return nil
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}
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func (n *NFSCLIENT) parseData(mountpoint string, export string, version string, line []string, acc telegraf.Accumulator) error {
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tags := map[string]string{"mountpoint": mountpoint, "serverexport": export}
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nline := convert(line)
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first := strings.Replace(line[0], ":", "", 1)
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var fields = make(map[string]interface{})
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if first == "events" {
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for i, t := range eventsFields {
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fields[t] = nline[i]
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}
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acc.AddFields("nfs_events", fields, tags)
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} else if first == "bytes" {
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for i, t := range bytesFields {
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fields[t] = nline[i]
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}
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acc.AddFields("nfs_bytes", fields, tags)
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} else if first == "xprt" {
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switch line[1] {
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case "tcp":
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{
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for i, t := range xprttcpFields {
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fields[t] = nline[i+2]
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}
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acc.AddFields("nfs_xprttcp", fields, tags)
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}
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case "udp":
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{
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for i, t := range xprtudpFields {
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fields[t] = nline[i+2]
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}
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acc.AddFields("nfs_xprtudp", fields, tags)
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}
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}
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} else if version == "3" {
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if In(nfs3Fields, first) {
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for i, t := range nline {
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item := fmt.Sprintf("%s_%s", first, nfsopFields[i])
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fields[item] = t
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}
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acc.AddFields("nfs_ops", fields, tags)
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}
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} else if version == "4" {
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if In(nfs4Fields, first) {
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for i, t := range nline {
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item := fmt.Sprintf("%s_%s", first, nfsopFields[i])
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fields[item] = t
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}
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acc.AddFields("nfs_ops", fields, tags)
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}
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}
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return nil
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}
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func (n *NFSCLIENT) processText(scanner *bufio.Scanner, acc telegraf.Accumulator) error {
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var device string
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var version string
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var export string
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for scanner.Scan() {
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line := strings.Fields(scanner.Text())
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if In(line, "fstype") && In(line, "nfs") || In(line, "nfs4") {
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device = line[4]
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export = line[1]
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} else if In(line, "(nfs)") || In(line, "(nfs4)") {
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version = strings.Split(line[5], "/")[1]
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}
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if len(line) > 0 {
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n.parseStat(device, export, version, line, acc)
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if n.Fullstat == true {
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n.parseData(device, export, version, line, acc)
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}
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}
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}
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return nil
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}
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func (n *NFSCLIENT) Gather(acc telegraf.Accumulator) error {
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var outerr error
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file, err := os.Open("/proc/self/mountstats")
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if err != nil {
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log.Fatal(err)
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}
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defer file.Close()
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scanner := bufio.NewScanner(file)
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n.processText(scanner, acc)
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if err := scanner.Err(); err != nil {
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log.Fatal(err)
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}
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return outerr
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}
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func init() {
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inputs.Add("nfsclient", func() telegraf.Input {
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return &NFSCLIENT{}
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})
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}
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