mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-12-22 16:36:07 +01:00
320 lines
7.4 KiB
Go
320 lines
7.4 KiB
Go
// Copyright 2018 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Package nfs implements parsing of /proc/net/rpc/nfsd.
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// Fields are documented in https://www.svennd.be/nfsd-stats-explained-procnetrpcnfsd/
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package nfs
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import (
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"os"
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"strings"
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"github.com/prometheus/procfs/internal/fs"
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)
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// ReplyCache models the "rc" line.
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type ReplyCache struct {
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Hits uint64
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Misses uint64
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NoCache uint64
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}
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// FileHandles models the "fh" line.
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type FileHandles struct {
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Stale uint64
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TotalLookups uint64
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AnonLookups uint64
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DirNoCache uint64
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NoDirNoCache uint64
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}
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// InputOutput models the "io" line.
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type InputOutput struct {
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Read uint64
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Write uint64
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}
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// Threads models the "th" line.
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type Threads struct {
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Threads uint64
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FullCnt uint64
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}
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// ReadAheadCache models the "ra" line.
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type ReadAheadCache struct {
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CacheSize uint64
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CacheHistogram []uint64
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NotFound uint64
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}
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// Network models the "net" line.
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type Network struct {
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NetCount uint64
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UDPCount uint64
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TCPCount uint64
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TCPConnect uint64
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}
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// ClientRPC models the nfs "rpc" line.
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type ClientRPC struct {
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RPCCount uint64
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Retransmissions uint64
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AuthRefreshes uint64
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}
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// ServerRPC models the nfsd "rpc" line.
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type ServerRPC struct {
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RPCCount uint64
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BadCnt uint64
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BadFmt uint64
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BadAuth uint64
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BadcInt uint64
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}
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// V2Stats models the "proc2" line.
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type V2Stats struct {
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Null uint64
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GetAttr uint64
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SetAttr uint64
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Root uint64
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Lookup uint64
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ReadLink uint64
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Read uint64
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WrCache uint64
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Write uint64
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Create uint64
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Remove uint64
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Rename uint64
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Link uint64
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SymLink uint64
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MkDir uint64
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RmDir uint64
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ReadDir uint64
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FsStat uint64
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}
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// V3Stats models the "proc3" line.
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type V3Stats struct {
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Null uint64
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GetAttr uint64
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SetAttr uint64
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Lookup uint64
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Access uint64
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ReadLink uint64
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Read uint64
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Write uint64
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Create uint64
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MkDir uint64
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SymLink uint64
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MkNod uint64
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Remove uint64
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RmDir uint64
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Rename uint64
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Link uint64
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ReadDir uint64
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ReadDirPlus uint64
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FsStat uint64
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FsInfo uint64
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PathConf uint64
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Commit uint64
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}
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// ClientV4Stats models the nfs "proc4" line.
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type ClientV4Stats struct {
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Null uint64
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Read uint64
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Write uint64
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Commit uint64
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Open uint64
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OpenConfirm uint64
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OpenNoattr uint64
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OpenDowngrade uint64
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Close uint64
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Setattr uint64
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FsInfo uint64
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Renew uint64
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SetClientID uint64
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SetClientIDConfirm uint64
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Lock uint64
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Lockt uint64
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Locku uint64
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Access uint64
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Getattr uint64
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Lookup uint64
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LookupRoot uint64
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Remove uint64
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Rename uint64
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Link uint64
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Symlink uint64
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Create uint64
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Pathconf uint64
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StatFs uint64
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ReadLink uint64
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ReadDir uint64
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ServerCaps uint64
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DelegReturn uint64
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GetACL uint64
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SetACL uint64
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FsLocations uint64
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ReleaseLockowner uint64
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Secinfo uint64
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FsidPresent uint64
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ExchangeID uint64
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CreateSession uint64
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DestroySession uint64
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Sequence uint64
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GetLeaseTime uint64
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ReclaimComplete uint64
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LayoutGet uint64
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GetDeviceInfo uint64
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LayoutCommit uint64
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LayoutReturn uint64
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SecinfoNoName uint64
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TestStateID uint64
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FreeStateID uint64
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GetDeviceList uint64
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BindConnToSession uint64
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DestroyClientID uint64
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Seek uint64
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Allocate uint64
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DeAllocate uint64
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LayoutStats uint64
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Clone uint64
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}
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// ServerV4Stats models the nfsd "proc4" line.
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type ServerV4Stats struct {
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Null uint64
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Compound uint64
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}
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// V4Ops models the "proc4ops" line: NFSv4 operations
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// Variable list, see:
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// v4.0 https://tools.ietf.org/html/rfc3010 (38 operations)
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// v4.1 https://tools.ietf.org/html/rfc5661 (58 operations)
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// v4.2 https://tools.ietf.org/html/draft-ietf-nfsv4-minorversion2-41 (71 operations)
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type V4Ops struct {
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//Values uint64 // Variable depending on v4.x sub-version. TODO: Will this always at least include the fields in this struct?
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Op0Unused uint64
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Op1Unused uint64
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Op2Future uint64
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Access uint64
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Close uint64
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Commit uint64
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Create uint64
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DelegPurge uint64
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DelegReturn uint64
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GetAttr uint64
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GetFH uint64
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Link uint64
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Lock uint64
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Lockt uint64
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Locku uint64
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Lookup uint64
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LookupRoot uint64
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Nverify uint64
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Open uint64
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OpenAttr uint64
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OpenConfirm uint64
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OpenDgrd uint64
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PutFH uint64
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PutPubFH uint64
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PutRootFH uint64
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Read uint64
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ReadDir uint64
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ReadLink uint64
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Remove uint64
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Rename uint64
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Renew uint64
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RestoreFH uint64
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SaveFH uint64
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SecInfo uint64
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SetAttr uint64
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Verify uint64
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Write uint64
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RelLockOwner uint64
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}
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// ClientRPCStats models all stats from /proc/net/rpc/nfs.
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type ClientRPCStats struct {
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Network Network
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ClientRPC ClientRPC
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V2Stats V2Stats
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V3Stats V3Stats
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ClientV4Stats ClientV4Stats
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}
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// ServerRPCStats models all stats from /proc/net/rpc/nfsd.
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type ServerRPCStats struct {
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ReplyCache ReplyCache
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FileHandles FileHandles
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InputOutput InputOutput
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Threads Threads
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ReadAheadCache ReadAheadCache
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Network Network
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ServerRPC ServerRPC
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V2Stats V2Stats
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V3Stats V3Stats
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ServerV4Stats ServerV4Stats
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V4Ops V4Ops
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}
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// FS represents the pseudo-filesystem proc, which provides an interface to
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// kernel data structures.
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type FS struct {
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proc *fs.FS
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}
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// NewDefaultFS returns a new FS mounted under the default mountPoint. It will error
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// if the mount point can't be read.
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func NewDefaultFS() (FS, error) {
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return NewFS(fs.DefaultProcMountPoint)
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}
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// NewFS returns a new FS mounted under the given mountPoint. It will error
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// if the mount point can't be read.
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func NewFS(mountPoint string) (FS, error) {
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if strings.TrimSpace(mountPoint) == "" {
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mountPoint = fs.DefaultProcMountPoint
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}
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fs, err := fs.NewFS(mountPoint)
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if err != nil {
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return FS{}, err
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}
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return FS{&fs}, nil
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}
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// ClientRPCStats retrieves NFS client RPC statistics
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// from proc/net/rpc/nfs.
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func (fs FS) ClientRPCStats() (*ClientRPCStats, error) {
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f, err := os.Open(fs.proc.Path("net/rpc/nfs"))
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if err != nil {
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return nil, err
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}
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defer f.Close()
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return ParseClientRPCStats(f)
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}
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// ServerRPCStats retrieves NFS daemon RPC statistics
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// from proc/net/rpc/nfsd.
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func (fs FS) ServerRPCStats() (*ServerRPCStats, error) {
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f, err := os.Open(fs.proc.Path("net/rpc/nfsd"))
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if err != nil {
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return nil, err
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}
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defer f.Close()
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return ParseServerRPCStats(f)
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}
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