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-rw-r--r--vendor/github.com/prometheus/procfs/xfs/parse.go359
1 files changed, 359 insertions, 0 deletions
diff --git a/vendor/github.com/prometheus/procfs/xfs/parse.go b/vendor/github.com/prometheus/procfs/xfs/parse.go
new file mode 100644
index 000000000..c8f6279f3
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/xfs/parse.go
@@ -0,0 +1,359 @@
+// Copyright 2017 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 xfs
+
+import (
+ "bufio"
+ "fmt"
+ "io"
+ "strconv"
+ "strings"
+)
+
+// ParseStats parses a Stats from an input io.Reader, using the format
+// found in /proc/fs/xfs/stat.
+func ParseStats(r io.Reader) (*Stats, error) {
+ const (
+ // Fields parsed into stats structures.
+ fieldExtentAlloc = "extent_alloc"
+ fieldAbt = "abt"
+ fieldBlkMap = "blk_map"
+ fieldBmbt = "bmbt"
+ fieldDir = "dir"
+ fieldTrans = "trans"
+ fieldIg = "ig"
+ fieldLog = "log"
+ fieldRw = "rw"
+ fieldAttr = "attr"
+ fieldIcluster = "icluster"
+ fieldVnodes = "vnodes"
+ fieldBuf = "buf"
+ fieldXpc = "xpc"
+
+ // Unimplemented at this time due to lack of documentation.
+ fieldPushAil = "push_ail"
+ fieldXstrat = "xstrat"
+ fieldAbtb2 = "abtb2"
+ fieldAbtc2 = "abtc2"
+ fieldBmbt2 = "bmbt2"
+ fieldIbt2 = "ibt2"
+ fieldFibt2 = "fibt2"
+ fieldQm = "qm"
+ fieldDebug = "debug"
+ )
+
+ var xfss Stats
+
+ s := bufio.NewScanner(r)
+ for s.Scan() {
+ // Expect at least a string label and a single integer value, ex:
+ // - abt 0
+ // - rw 1 2
+ ss := strings.Fields(string(s.Bytes()))
+ if len(ss) < 2 {
+ continue
+ }
+ label := ss[0]
+
+ // Extended precision counters are uint64 values.
+ if label == fieldXpc {
+ us, err := parseUint64s(ss[1:])
+ if err != nil {
+ return nil, err
+ }
+
+ xfss.ExtendedPrecision, err = extendedPrecisionStats(us)
+ if err != nil {
+ return nil, err
+ }
+
+ continue
+ }
+
+ // All other counters are uint32 values.
+ us, err := parseUint32s(ss[1:])
+ if err != nil {
+ return nil, err
+ }
+
+ switch label {
+ case fieldExtentAlloc:
+ xfss.ExtentAllocation, err = extentAllocationStats(us)
+ case fieldAbt:
+ xfss.AllocationBTree, err = btreeStats(us)
+ case fieldBlkMap:
+ xfss.BlockMapping, err = blockMappingStats(us)
+ case fieldBmbt:
+ xfss.BlockMapBTree, err = btreeStats(us)
+ case fieldDir:
+ xfss.DirectoryOperation, err = directoryOperationStats(us)
+ case fieldTrans:
+ xfss.Transaction, err = transactionStats(us)
+ case fieldIg:
+ xfss.InodeOperation, err = inodeOperationStats(us)
+ case fieldLog:
+ xfss.LogOperation, err = logOperationStats(us)
+ case fieldRw:
+ xfss.ReadWrite, err = readWriteStats(us)
+ case fieldAttr:
+ xfss.AttributeOperation, err = attributeOperationStats(us)
+ case fieldIcluster:
+ xfss.InodeClustering, err = inodeClusteringStats(us)
+ case fieldVnodes:
+ xfss.Vnode, err = vnodeStats(us)
+ case fieldBuf:
+ xfss.Buffer, err = bufferStats(us)
+ }
+ if err != nil {
+ return nil, err
+ }
+ }
+
+ return &xfss, s.Err()
+}
+
+// extentAllocationStats builds an ExtentAllocationStats from a slice of uint32s.
+func extentAllocationStats(us []uint32) (ExtentAllocationStats, error) {
+ if l := len(us); l != 4 {
+ return ExtentAllocationStats{}, fmt.Errorf("incorrect number of values for XFS extent allocation stats: %d", l)
+ }
+
+ return ExtentAllocationStats{
+ ExtentsAllocated: us[0],
+ BlocksAllocated: us[1],
+ ExtentsFreed: us[2],
+ BlocksFreed: us[3],
+ }, nil
+}
+
+// btreeStats builds a BTreeStats from a slice of uint32s.
+func btreeStats(us []uint32) (BTreeStats, error) {
+ if l := len(us); l != 4 {
+ return BTreeStats{}, fmt.Errorf("incorrect number of values for XFS btree stats: %d", l)
+ }
+
+ return BTreeStats{
+ Lookups: us[0],
+ Compares: us[1],
+ RecordsInserted: us[2],
+ RecordsDeleted: us[3],
+ }, nil
+}
+
+// BlockMappingStat builds a BlockMappingStats from a slice of uint32s.
+func blockMappingStats(us []uint32) (BlockMappingStats, error) {
+ if l := len(us); l != 7 {
+ return BlockMappingStats{}, fmt.Errorf("incorrect number of values for XFS block mapping stats: %d", l)
+ }
+
+ return BlockMappingStats{
+ Reads: us[0],
+ Writes: us[1],
+ Unmaps: us[2],
+ ExtentListInsertions: us[3],
+ ExtentListDeletions: us[4],
+ ExtentListLookups: us[5],
+ ExtentListCompares: us[6],
+ }, nil
+}
+
+// DirectoryOperationStats builds a DirectoryOperationStats from a slice of uint32s.
+func directoryOperationStats(us []uint32) (DirectoryOperationStats, error) {
+ if l := len(us); l != 4 {
+ return DirectoryOperationStats{}, fmt.Errorf("incorrect number of values for XFS directory operation stats: %d", l)
+ }
+
+ return DirectoryOperationStats{
+ Lookups: us[0],
+ Creates: us[1],
+ Removes: us[2],
+ Getdents: us[3],
+ }, nil
+}
+
+// TransactionStats builds a TransactionStats from a slice of uint32s.
+func transactionStats(us []uint32) (TransactionStats, error) {
+ if l := len(us); l != 3 {
+ return TransactionStats{}, fmt.Errorf("incorrect number of values for XFS transaction stats: %d", l)
+ }
+
+ return TransactionStats{
+ Sync: us[0],
+ Async: us[1],
+ Empty: us[2],
+ }, nil
+}
+
+// InodeOperationStats builds an InodeOperationStats from a slice of uint32s.
+func inodeOperationStats(us []uint32) (InodeOperationStats, error) {
+ if l := len(us); l != 7 {
+ return InodeOperationStats{}, fmt.Errorf("incorrect number of values for XFS inode operation stats: %d", l)
+ }
+
+ return InodeOperationStats{
+ Attempts: us[0],
+ Found: us[1],
+ Recycle: us[2],
+ Missed: us[3],
+ Duplicate: us[4],
+ Reclaims: us[5],
+ AttributeChange: us[6],
+ }, nil
+}
+
+// LogOperationStats builds a LogOperationStats from a slice of uint32s.
+func logOperationStats(us []uint32) (LogOperationStats, error) {
+ if l := len(us); l != 5 {
+ return LogOperationStats{}, fmt.Errorf("incorrect number of values for XFS log operation stats: %d", l)
+ }
+
+ return LogOperationStats{
+ Writes: us[0],
+ Blocks: us[1],
+ NoInternalBuffers: us[2],
+ Force: us[3],
+ ForceSleep: us[4],
+ }, nil
+}
+
+// ReadWriteStats builds a ReadWriteStats from a slice of uint32s.
+func readWriteStats(us []uint32) (ReadWriteStats, error) {
+ if l := len(us); l != 2 {
+ return ReadWriteStats{}, fmt.Errorf("incorrect number of values for XFS read write stats: %d", l)
+ }
+
+ return ReadWriteStats{
+ Read: us[0],
+ Write: us[1],
+ }, nil
+}
+
+// AttributeOperationStats builds an AttributeOperationStats from a slice of uint32s.
+func attributeOperationStats(us []uint32) (AttributeOperationStats, error) {
+ if l := len(us); l != 4 {
+ return AttributeOperationStats{}, fmt.Errorf("incorrect number of values for XFS attribute operation stats: %d", l)
+ }
+
+ return AttributeOperationStats{
+ Get: us[0],
+ Set: us[1],
+ Remove: us[2],
+ List: us[3],
+ }, nil
+}
+
+// InodeClusteringStats builds an InodeClusteringStats from a slice of uint32s.
+func inodeClusteringStats(us []uint32) (InodeClusteringStats, error) {
+ if l := len(us); l != 3 {
+ return InodeClusteringStats{}, fmt.Errorf("incorrect number of values for XFS inode clustering stats: %d", l)
+ }
+
+ return InodeClusteringStats{
+ Iflush: us[0],
+ Flush: us[1],
+ FlushInode: us[2],
+ }, nil
+}
+
+// VnodeStats builds a VnodeStats from a slice of uint32s.
+func vnodeStats(us []uint32) (VnodeStats, error) {
+ // The attribute "Free" appears to not be available on older XFS
+ // stats versions. Therefore, 7 or 8 elements may appear in
+ // this slice.
+ l := len(us)
+ if l != 7 && l != 8 {
+ return VnodeStats{}, fmt.Errorf("incorrect number of values for XFS vnode stats: %d", l)
+ }
+
+ s := VnodeStats{
+ Active: us[0],
+ Allocate: us[1],
+ Get: us[2],
+ Hold: us[3],
+ Release: us[4],
+ Reclaim: us[5],
+ Remove: us[6],
+ }
+
+ // Skip adding free, unless it is present. The zero value will
+ // be used in place of an actual count.
+ if l == 7 {
+ return s, nil
+ }
+
+ s.Free = us[7]
+ return s, nil
+}
+
+// BufferStats builds a BufferStats from a slice of uint32s.
+func bufferStats(us []uint32) (BufferStats, error) {
+ if l := len(us); l != 9 {
+ return BufferStats{}, fmt.Errorf("incorrect number of values for XFS buffer stats: %d", l)
+ }
+
+ return BufferStats{
+ Get: us[0],
+ Create: us[1],
+ GetLocked: us[2],
+ GetLockedWaited: us[3],
+ BusyLocked: us[4],
+ MissLocked: us[5],
+ PageRetries: us[6],
+ PageFound: us[7],
+ GetRead: us[8],
+ }, nil
+}
+
+// ExtendedPrecisionStats builds an ExtendedPrecisionStats from a slice of uint32s.
+func extendedPrecisionStats(us []uint64) (ExtendedPrecisionStats, error) {
+ if l := len(us); l != 3 {
+ return ExtendedPrecisionStats{}, fmt.Errorf("incorrect number of values for XFS extended precision stats: %d", l)
+ }
+
+ return ExtendedPrecisionStats{
+ FlushBytes: us[0],
+ WriteBytes: us[1],
+ ReadBytes: us[2],
+ }, nil
+}
+
+// parseUint32s parses a slice of strings into a slice of uint32s.
+func parseUint32s(ss []string) ([]uint32, error) {
+ us := make([]uint32, 0, len(ss))
+ for _, s := range ss {
+ u, err := strconv.ParseUint(s, 10, 32)
+ if err != nil {
+ return nil, err
+ }
+
+ us = append(us, uint32(u))
+ }
+
+ return us, nil
+}
+
+// parseUint64s parses a slice of strings into a slice of uint64s.
+func parseUint64s(ss []string) ([]uint64, error) {
+ us := make([]uint64, 0, len(ss))
+ for _, s := range ss {
+ u, err := strconv.ParseUint(s, 10, 64)
+ if err != nil {
+ return nil, err
+ }
+
+ us = append(us, u)
+ }
+
+ return us, nil
+}
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-11-12 12:59:56 +0000