[VOL-4291] Rw-core updates for gRPC migration
Change-Id: I8d5a554409115b29318089671ca4e1ab3fa98810
diff --git a/vendor/github.com/prometheus/procfs/vm.go b/vendor/github.com/prometheus/procfs/vm.go
new file mode 100644
index 0000000..cb13891
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/vm.go
@@ -0,0 +1,210 @@
+// Copyright 2019 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.
+
+// +build !windows
+
+package procfs
+
+import (
+ "fmt"
+ "io/ioutil"
+ "os"
+ "path/filepath"
+ "strings"
+
+ "github.com/prometheus/procfs/internal/util"
+)
+
+// The VM interface is described at
+// https://www.kernel.org/doc/Documentation/sysctl/vm.txt
+// Each setting is exposed as a single file.
+// Each file contains one line with a single numerical value, except lowmem_reserve_ratio which holds an array
+// and numa_zonelist_order (deprecated) which is a string
+type VM struct {
+ AdminReserveKbytes *int64 // /proc/sys/vm/admin_reserve_kbytes
+ BlockDump *int64 // /proc/sys/vm/block_dump
+ CompactUnevictableAllowed *int64 // /proc/sys/vm/compact_unevictable_allowed
+ DirtyBackgroundBytes *int64 // /proc/sys/vm/dirty_background_bytes
+ DirtyBackgroundRatio *int64 // /proc/sys/vm/dirty_background_ratio
+ DirtyBytes *int64 // /proc/sys/vm/dirty_bytes
+ DirtyExpireCentisecs *int64 // /proc/sys/vm/dirty_expire_centisecs
+ DirtyRatio *int64 // /proc/sys/vm/dirty_ratio
+ DirtytimeExpireSeconds *int64 // /proc/sys/vm/dirtytime_expire_seconds
+ DirtyWritebackCentisecs *int64 // /proc/sys/vm/dirty_writeback_centisecs
+ DropCaches *int64 // /proc/sys/vm/drop_caches
+ ExtfragThreshold *int64 // /proc/sys/vm/extfrag_threshold
+ HugetlbShmGroup *int64 // /proc/sys/vm/hugetlb_shm_group
+ LaptopMode *int64 // /proc/sys/vm/laptop_mode
+ LegacyVaLayout *int64 // /proc/sys/vm/legacy_va_layout
+ LowmemReserveRatio []*int64 // /proc/sys/vm/lowmem_reserve_ratio
+ MaxMapCount *int64 // /proc/sys/vm/max_map_count
+ MemoryFailureEarlyKill *int64 // /proc/sys/vm/memory_failure_early_kill
+ MemoryFailureRecovery *int64 // /proc/sys/vm/memory_failure_recovery
+ MinFreeKbytes *int64 // /proc/sys/vm/min_free_kbytes
+ MinSlabRatio *int64 // /proc/sys/vm/min_slab_ratio
+ MinUnmappedRatio *int64 // /proc/sys/vm/min_unmapped_ratio
+ MmapMinAddr *int64 // /proc/sys/vm/mmap_min_addr
+ NrHugepages *int64 // /proc/sys/vm/nr_hugepages
+ NrHugepagesMempolicy *int64 // /proc/sys/vm/nr_hugepages_mempolicy
+ NrOvercommitHugepages *int64 // /proc/sys/vm/nr_overcommit_hugepages
+ NumaStat *int64 // /proc/sys/vm/numa_stat
+ NumaZonelistOrder string // /proc/sys/vm/numa_zonelist_order
+ OomDumpTasks *int64 // /proc/sys/vm/oom_dump_tasks
+ OomKillAllocatingTask *int64 // /proc/sys/vm/oom_kill_allocating_task
+ OvercommitKbytes *int64 // /proc/sys/vm/overcommit_kbytes
+ OvercommitMemory *int64 // /proc/sys/vm/overcommit_memory
+ OvercommitRatio *int64 // /proc/sys/vm/overcommit_ratio
+ PageCluster *int64 // /proc/sys/vm/page-cluster
+ PanicOnOom *int64 // /proc/sys/vm/panic_on_oom
+ PercpuPagelistFraction *int64 // /proc/sys/vm/percpu_pagelist_fraction
+ StatInterval *int64 // /proc/sys/vm/stat_interval
+ Swappiness *int64 // /proc/sys/vm/swappiness
+ UserReserveKbytes *int64 // /proc/sys/vm/user_reserve_kbytes
+ VfsCachePressure *int64 // /proc/sys/vm/vfs_cache_pressure
+ WatermarkBoostFactor *int64 // /proc/sys/vm/watermark_boost_factor
+ WatermarkScaleFactor *int64 // /proc/sys/vm/watermark_scale_factor
+ ZoneReclaimMode *int64 // /proc/sys/vm/zone_reclaim_mode
+}
+
+// VM reads the VM statistics from the specified `proc` filesystem.
+func (fs FS) VM() (*VM, error) {
+ path := fs.proc.Path("sys/vm")
+ file, err := os.Stat(path)
+ if err != nil {
+ return nil, err
+ }
+ if !file.Mode().IsDir() {
+ return nil, fmt.Errorf("%s is not a directory", path)
+ }
+
+ files, err := ioutil.ReadDir(path)
+ if err != nil {
+ return nil, err
+ }
+
+ var vm VM
+ for _, f := range files {
+ if f.IsDir() {
+ continue
+ }
+
+ name := filepath.Join(path, f.Name())
+ // ignore errors on read, as there are some write only
+ // in /proc/sys/vm
+ value, err := util.SysReadFile(name)
+ if err != nil {
+ continue
+ }
+ vp := util.NewValueParser(value)
+
+ switch f.Name() {
+ case "admin_reserve_kbytes":
+ vm.AdminReserveKbytes = vp.PInt64()
+ case "block_dump":
+ vm.BlockDump = vp.PInt64()
+ case "compact_unevictable_allowed":
+ vm.CompactUnevictableAllowed = vp.PInt64()
+ case "dirty_background_bytes":
+ vm.DirtyBackgroundBytes = vp.PInt64()
+ case "dirty_background_ratio":
+ vm.DirtyBackgroundRatio = vp.PInt64()
+ case "dirty_bytes":
+ vm.DirtyBytes = vp.PInt64()
+ case "dirty_expire_centisecs":
+ vm.DirtyExpireCentisecs = vp.PInt64()
+ case "dirty_ratio":
+ vm.DirtyRatio = vp.PInt64()
+ case "dirtytime_expire_seconds":
+ vm.DirtytimeExpireSeconds = vp.PInt64()
+ case "dirty_writeback_centisecs":
+ vm.DirtyWritebackCentisecs = vp.PInt64()
+ case "drop_caches":
+ vm.DropCaches = vp.PInt64()
+ case "extfrag_threshold":
+ vm.ExtfragThreshold = vp.PInt64()
+ case "hugetlb_shm_group":
+ vm.HugetlbShmGroup = vp.PInt64()
+ case "laptop_mode":
+ vm.LaptopMode = vp.PInt64()
+ case "legacy_va_layout":
+ vm.LegacyVaLayout = vp.PInt64()
+ case "lowmem_reserve_ratio":
+ stringSlice := strings.Fields(value)
+ pint64Slice := make([]*int64, 0, len(stringSlice))
+ for _, value := range stringSlice {
+ vp := util.NewValueParser(value)
+ pint64Slice = append(pint64Slice, vp.PInt64())
+ }
+ vm.LowmemReserveRatio = pint64Slice
+ case "max_map_count":
+ vm.MaxMapCount = vp.PInt64()
+ case "memory_failure_early_kill":
+ vm.MemoryFailureEarlyKill = vp.PInt64()
+ case "memory_failure_recovery":
+ vm.MemoryFailureRecovery = vp.PInt64()
+ case "min_free_kbytes":
+ vm.MinFreeKbytes = vp.PInt64()
+ case "min_slab_ratio":
+ vm.MinSlabRatio = vp.PInt64()
+ case "min_unmapped_ratio":
+ vm.MinUnmappedRatio = vp.PInt64()
+ case "mmap_min_addr":
+ vm.MmapMinAddr = vp.PInt64()
+ case "nr_hugepages":
+ vm.NrHugepages = vp.PInt64()
+ case "nr_hugepages_mempolicy":
+ vm.NrHugepagesMempolicy = vp.PInt64()
+ case "nr_overcommit_hugepages":
+ vm.NrOvercommitHugepages = vp.PInt64()
+ case "numa_stat":
+ vm.NumaStat = vp.PInt64()
+ case "numa_zonelist_order":
+ vm.NumaZonelistOrder = value
+ case "oom_dump_tasks":
+ vm.OomDumpTasks = vp.PInt64()
+ case "oom_kill_allocating_task":
+ vm.OomKillAllocatingTask = vp.PInt64()
+ case "overcommit_kbytes":
+ vm.OvercommitKbytes = vp.PInt64()
+ case "overcommit_memory":
+ vm.OvercommitMemory = vp.PInt64()
+ case "overcommit_ratio":
+ vm.OvercommitRatio = vp.PInt64()
+ case "page-cluster":
+ vm.PageCluster = vp.PInt64()
+ case "panic_on_oom":
+ vm.PanicOnOom = vp.PInt64()
+ case "percpu_pagelist_fraction":
+ vm.PercpuPagelistFraction = vp.PInt64()
+ case "stat_interval":
+ vm.StatInterval = vp.PInt64()
+ case "swappiness":
+ vm.Swappiness = vp.PInt64()
+ case "user_reserve_kbytes":
+ vm.UserReserveKbytes = vp.PInt64()
+ case "vfs_cache_pressure":
+ vm.VfsCachePressure = vp.PInt64()
+ case "watermark_boost_factor":
+ vm.WatermarkBoostFactor = vp.PInt64()
+ case "watermark_scale_factor":
+ vm.WatermarkScaleFactor = vp.PInt64()
+ case "zone_reclaim_mode":
+ vm.ZoneReclaimMode = vp.PInt64()
+ }
+ if err := vp.Err(); err != nil {
+ return nil, err
+ }
+ }
+
+ return &vm, nil
+}