From e23c26fb8ab64c8aed6fdb9c98ee4a4b7cae0c09 Mon Sep 17 00:00:00 2001 From: Vladislav Fursov Date: Wed, 7 Oct 2020 14:13:04 +0900 Subject: [PATCH] done lvm_exporter --- .circleci/config.yml | 70 +++ .gitignore | 35 ++ .golangci.yml | 50 ++ .promu.yml | 26 + LICENSE | 21 + Makefile | 59 ++ collector/collector.go | 93 +++ collector/fields_gen.go | 1095 +++++++++++++++++++++++++++++++++ collector/lv.go | 202 ++++++ collector/lv_test.go | 358 +++++++++++ generator/fields_generator.go | 203 ++++++ go.mod | 19 + go.sum | 681 ++++++++++++++++++++ lvm_exporter.go | 86 +++ scripts/errcheck_excludes.txt | 4 + 15 files changed, 3002 insertions(+) create mode 100644 .circleci/config.yml create mode 100644 .gitignore create mode 100644 .golangci.yml create mode 100644 .promu.yml create mode 100644 LICENSE create mode 100644 Makefile create mode 100644 collector/collector.go create mode 100644 collector/fields_gen.go create mode 100644 collector/lv.go create mode 100644 collector/lv_test.go create mode 100644 generator/fields_generator.go create mode 100644 go.mod create mode 100644 go.sum create mode 100644 lvm_exporter.go create mode 100644 scripts/errcheck_excludes.txt diff --git a/.circleci/config.yml b/.circleci/config.yml new file mode 100644 index 0000000..41b3e29 --- /dev/null +++ b/.circleci/config.yml @@ -0,0 +1,70 @@ +--- +version: 2.1 + +executors: + # Whenever the Go version is updated here, .promu.yml should also be updated. + golang: + docker: + - image: circleci/golang:1.15 + +jobs: + test: + executor: golang + steps: + - checkout + - run: make + + build: + executor: golang + working_directory: /home/circleci/.go_workspace/src/github.com/ghostiam/lvm_exporter + + steps: + - setup_remote_docker: + version: 18.09.3 + - checkout + - run: make promu + - run: promu crossbuild + - persist_to_workspace: + root: . + paths: + - .build + - store_artifacts: + path: .build + destination: /build + + release_tags: + executor: golang + + steps: + - checkout + - attach_workspace: + at: . + - run: make promu + - run: promu crossbuild tarballs + - run: promu checksum .tarballs + - run: promu release .tarballs + - store_artifacts: + path: .tarballs + destination: releases + +workflows: + version: 2 + lvm_exporter: + jobs: + - test: + filters: + tags: + only: /.*/ + - build: + filters: + tags: + only: /.*/ + - release_tags: + requires: + - test + - build + filters: + tags: + only: /^v[0-9]+(\.[0-9]+){2}(-.+|[^-.]*)$/ + branches: + ignore: /.*/ diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..90e1b3e --- /dev/null +++ b/.gitignore @@ -0,0 +1,35 @@ +# Compiled Object files, Static and Dynamic libs (Shared Objects) +*.o +*.a +*.so + +# Folders +_obj +_test + +# Architecture specific extensions/prefixes +*.[568vq] +[568vq].out + +*.cgo1.go +*.cgo2.c +_cgo_defun.c +_cgo_gotypes.go +_cgo_export.* + +_testmain.go + +*.exe +dependencies-stamp +/lvm_exporter +/.build +/.deps +/.release +/.tarballs + +# Intellij + +/.idea +*.iml + +/vendor diff --git a/.golangci.yml b/.golangci.yml new file mode 100644 index 0000000..f3fd759 --- /dev/null +++ b/.golangci.yml @@ -0,0 +1,50 @@ +run: + tests: true + +output: + print-issued-lines: true + +linters: + enable: + - bodyclose + - exhaustive + - exportloopref + - goconst + - gocritic + - goerr113 + - goimports + - golint + - gosimple + - govet + - nakedret + - rowserrcheck + - staticcheck + - unconvert + - whitespace + +issues: + exclude-rules: + - path: _test.go + linters: + - errcheck + +linters-settings: + govet: + enable-all: true + + errcheck: + exclude: scripts/errcheck_excludes.txt + + whitespace: + multi-if: false # Enforces newlines (or comments) after every multi-line if statement + multi-func: false # Enforces newlines (or comments) after every multi-line function signature + + exhaustive: + # indicates that switch statements are to be considered exhaustive if a + # 'default' case is present, even if all enum members aren't listed in the + # switch + # default-signifies-exhaustive: false + + nakedret: + # make an issue if func has more lines of code than this setting and it has naked returns; default is 30 + max-func-lines: 1 diff --git a/.promu.yml b/.promu.yml new file mode 100644 index 0000000..831b129 --- /dev/null +++ b/.promu.yml @@ -0,0 +1,26 @@ +verbose: false +go: + # Whenever the Go version is updated here, .travis.yml and + # .circle/config.yml should also be updated. + version: 1.15 + cgo: false +repository: + path: github.com/ghostiam/lvm_exporter +build: + binaries: + - name: lvm_exporter + prefix: . + flags: -a -tags netgo + ldflags: | + -X {{repoPath}}/vendor/github.com/prometheus/common/version.Version={{.Version}} + -X {{repoPath}}/vendor/github.com/prometheus/common/version.Revision={{.Revision}} + -X {{repoPath}}/vendor/github.com/prometheus/common/version.Branch={{.Branch}} + -X {{repoPath}}/vendor/github.com/prometheus/common/version.BuildUser={{user}}@{{host}} + -X {{repoPath}}/vendor/github.com/prometheus/common/version.BuildDate={{date "20060102-15:04:05"}} +tarball: + files: + - LICENSE +crossbuild: + platforms: + - linux/amd64 + - linux/386 diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..4733f40 --- /dev/null +++ b/LICENSE @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2020 Vladislav Fursov + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..66bf9e3 --- /dev/null +++ b/Makefile @@ -0,0 +1,59 @@ +GO := go +PROMU := $(GOPATH)/bin/promu + +PREFIX ?= $(shell pwd) +BIN_DIR ?= $(shell pwd) + +GOLANGCI_LINT := $(GOPATH)/bin/golangci-lint +GOLANGCI_LINT_VERSION ?= v1.31.0 + +all: format lint build test + +style: + @echo ">> checking code style" + @! gofmt -d $(shell find . -path ./vendor -prune -o -name '*.go' -print) | grep '^' + +test: + @echo ">> running tests" + @$(GO) test -short -race ./... + +format: + @echo ">> formatting code" + @$(GO) fmt $(pkgs) + +vet: + @echo ">> vetting code" + @$(GO) vet $(pkgs) + +build: $(PROMU) + @echo ">> building binaries" + $(PROMU) build --prefix $(PREFIX) + +crossbuild: $(PROMU) + @echo ">> crossbuilding binaries" + $(PROMU) crossbuild -v + +tarball: $(PROMU) + @echo ">> building release tarball" + @$(PROMU) tarball --prefix $(PREFIX) $(BIN_DIR) + +lint: $(GOLANGCI_LINT) + @echo ">> running golangci-lint" + GO111MODULE=on $(GO) list -e -compiled -test=true -export=false -deps=true -find=false -tags= -- ./... > /dev/null + GO111MODULE=on $(GOLANGCI_LINT) run --sort-results ./... + +# deps +promu: $(PROMU) + +$(PROMU): + @GOOS=$(shell uname -s | tr A-Z a-z) \ + GOARCH=$(subst x86_64,amd64,$(patsubst i%86,386,$(shell uname -m))) \ + $(GO) get -u github.com/prometheus/promu + +$(GOLANGCI_LINT): + mkdir -p $(GOPATH)/bin + curl -sfL https://raw.githubusercontent.com/golangci/golangci-lint/$(GOLANGCI_LINT_VERSION)/install.sh \ + | sed -e '/install -d/d' \ + | sh -s -- -b $(GOPATH)/bin $(GOLANGCI_LINT_VERSION) + +.PHONY: all style format build crossbuild test vet tarball promu lint $(PROMU) $(GOLANGCI_LINT) diff --git a/collector/collector.go b/collector/collector.go new file mode 100644 index 0000000..90ec75a --- /dev/null +++ b/collector/collector.go @@ -0,0 +1,93 @@ +//go:generate go run ../generator/fields_generator.go -o fields_gen.go +package collector + +import ( + "os/exec" + "strings" + + "github.com/go-kit/kit/log" + "github.com/go-kit/kit/log/level" + "github.com/prometheus/client_golang/prometheus" +) + +type Collector struct { + cfg *Config + logger log.Logger +} + +type Config struct { +} + +func New(cfg *Config, logger log.Logger) (*Collector, error) { + if cfg == nil { + cfg = &Config{} + } + + return &Collector{ + cfg: cfg, + logger: logger, + }, nil +} + +func (c *Collector) Describe(ch chan<- *prometheus.Desc) {} + +func (c *Collector) Collect(ch chan<- prometheus.Metric) { + err := execToMetrics("lvs", ch) + if err != nil { + level.Error(c.logger).Log("err", err) + } + + err = execToMetrics("vgs", ch) + if err != nil { + level.Error(c.logger).Log("err", err) + } + + err = execToMetrics("pvs", ch) + if err != nil { + level.Error(c.logger).Log("err", err) + } +} + +func execToMetrics(exe string, ch chan<- prometheus.Metric) error { + cmd := exec.Command(exe, + "--reportformat", + "json", + "-o", + "all", + "--units", + "B", + "--binary", + ) + + out, err := cmd.Output() + if err != nil { + return err + } + + metrics, err := ReportsToMetrics(out) + if err != nil { + return err + } + + for _, ms := range metrics { + var labelsNames, labelsValues []string + for _, l := range ms.Labels { + labelsNames = append(labelsNames, l.Field) + labelsValues = append(labelsValues, l.Value) + } + + for _, m := range ms.Metrics { + gauge := prometheus.NewGaugeVec(prometheus.GaugeOpts{ + Namespace: "lvm", + Subsystem: ms.Namespace, + Name: strings.TrimPrefix(m.Field, ms.Namespace+"_"), + Help: m.Help, + ConstLabels: nil, + }, labelsNames).WithLabelValues(labelsValues...) + gauge.Set(m.Value) + ch <- gauge + } + } + + return nil +} diff --git a/collector/fields_gen.go b/collector/fields_gen.go new file mode 100644 index 0000000..83243f7 --- /dev/null +++ b/collector/fields_gen.go @@ -0,0 +1,1095 @@ +// Code generated by fields_generator.go. DO NOT EDIT. +package collector + +type FieldType string + +const ( + FieldTypeSTR FieldType = "STR" + FieldTypeNUM FieldType = "NUM" + FieldTypeBIN FieldType = "BIN" + FieldTypeSIZ FieldType = "SIZ" + FieldTypePCT FieldType = "PCT" + FieldTypeTIM FieldType = "TIM" + FieldTypeSNUM FieldType = "SNUM" + FieldTypeSTR_LIST FieldType = "STR_LIST" +) + +type Field struct { + Type FieldType + Name string + Description string +} + +var lvmFields = map[string]Field{ + "lv_uuid": Field{ + Type: FieldTypeSTR, + Name: "LV UUID", + Description: "Unique identifier.", + }, + "lv_name": Field{ + Type: FieldTypeSTR, + Name: "LV", + Description: "Name. LVs created for internal use are enclosed in brackets.", + }, + "lv_full_name": Field{ + Type: FieldTypeSTR, + Name: "LV", + Description: "Full name of LV including its VG, namely VG/LV.", + }, + "lv_path": Field{ + Type: FieldTypeSTR, + Name: "Path", + Description: "Full pathname for LV. Blank for internal LVs.", + }, + "lv_dm_path": Field{ + Type: FieldTypeSTR, + Name: "DMPath", + Description: "Internal device-mapper pathname for LV (in /dev/mapper directory).", + }, + "lv_parent": Field{ + Type: FieldTypeSTR, + Name: "Parent", + Description: "For LVs that are components of another LV, the parent LV.", + }, + "lv_layout": Field{ + Type: FieldTypeSTR_LIST, + Name: "Layout", + Description: "LV layout.", + }, + "lv_role": Field{ + Type: FieldTypeSTR_LIST, + Name: "Role", + Description: "LV role.", + }, + "lv_initial_image_sync": Field{ + Type: FieldTypeBIN, + Name: "InitImgSync", + Description: "Set if mirror/RAID images underwent initial resynchronization.", + }, + "lv_image_synced": Field{ + Type: FieldTypeBIN, + Name: "ImgSynced", + Description: "Set if mirror/RAID image is synchronized.", + }, + "lv_merging": Field{ + Type: FieldTypeBIN, + Name: "Merging", + Description: "Set if snapshot LV is being merged to origin.", + }, + "lv_converting": Field{ + Type: FieldTypeBIN, + Name: "Converting", + Description: "Set if LV is being converted.", + }, + "lv_allocation_policy": Field{ + Type: FieldTypeSTR, + Name: "AllocPol", + Description: "LV allocation policy.", + }, + "lv_allocation_locked": Field{ + Type: FieldTypeBIN, + Name: "AllocLock", + Description: "Set if LV is locked against allocation changes.", + }, + "lv_fixed_minor": Field{ + Type: FieldTypeBIN, + Name: "FixMin", + Description: "Set if LV has fixed minor number assigned.", + }, + "lv_skip_activation": Field{ + Type: FieldTypeBIN, + Name: "SkipAct", + Description: "Set if LV is skipped on activation.", + }, + "lv_when_full": Field{ + Type: FieldTypeSTR, + Name: "WhenFull", + Description: "For thin pools, behavior when full.", + }, + "lv_active": Field{ + Type: FieldTypeSTR, + Name: "Active", + Description: "Active state of the LV.", + }, + "lv_active_locally": Field{ + Type: FieldTypeBIN, + Name: "ActLocal", + Description: "Set if the LV is active locally.", + }, + "lv_active_remotely": Field{ + Type: FieldTypeBIN, + Name: "ActRemote", + Description: "Set if the LV is active remotely.", + }, + "lv_active_exclusively": Field{ + Type: FieldTypeBIN, + Name: "ActExcl", + Description: "Set if the LV is active exclusively.", + }, + "lv_major": Field{ + Type: FieldTypeSNUM, + Name: "Maj", + Description: "Persistent major number or -1 if not persistent.", + }, + "lv_minor": Field{ + Type: FieldTypeSNUM, + Name: "Min", + Description: "Persistent minor number or -1 if not persistent.", + }, + "lv_read_ahead": Field{ + Type: FieldTypeSIZ, + Name: "Rahead", + Description: "Read ahead setting in current units.", + }, + "lv_size": Field{ + Type: FieldTypeSIZ, + Name: "LSize", + Description: "Size of LV in current units.", + }, + "lv_metadata_size": Field{ + Type: FieldTypeSIZ, + Name: "MSize", + Description: "For thin and cache pools, the size of the LV that holds the metadata.", + }, + "seg_count": Field{ + Type: FieldTypeNUM, + Name: "#Seg", + Description: "Number of segments in LV.", + }, + "origin": Field{ + Type: FieldTypeSTR, + Name: "Origin", + Description: "For snapshots and thins, the origin device of this LV.", + }, + "origin_uuid": Field{ + Type: FieldTypeSTR, + Name: "Origin UUID", + Description: "For snapshots and thins, the UUID of origin device of this LV.", + }, + "origin_size": Field{ + Type: FieldTypeSIZ, + Name: "OSize", + Description: "For snapshots, the size of the origin device of this LV.", + }, + "lv_ancestors": Field{ + Type: FieldTypeSTR_LIST, + Name: "Ancestors", + Description: "LV ancestors ignoring any stored history of the ancestry chain.", + }, + "lv_full_ancestors": Field{ + Type: FieldTypeSTR_LIST, + Name: "FAncestors", + Description: "LV ancestors including stored history of the ancestry chain.", + }, + "lv_descendants": Field{ + Type: FieldTypeSTR_LIST, + Name: "Descendants", + Description: "LV descendants ignoring any stored history of the ancestry chain.", + }, + "lv_full_descendants": Field{ + Type: FieldTypeSTR_LIST, + Name: "FDescendants", + Description: "LV descendants including stored history of the ancestry chain.", + }, + "raid_mismatch_count": Field{ + Type: FieldTypeNUM, + Name: "Mismatches", + Description: "For RAID, number of mismatches found or repaired.", + }, + "raid_sync_action": Field{ + Type: FieldTypeSTR, + Name: "SyncAction", + Description: "For RAID, the current synchronization action being performed.", + }, + "raid_write_behind": Field{ + Type: FieldTypeNUM, + Name: "WBehind", + Description: "For RAID1, the number of outstanding writes allowed to writemostly devices.", + }, + "raid_min_recovery_rate": Field{ + Type: FieldTypeNUM, + Name: "MinSync", + Description: "For RAID1, the minimum recovery I/O load in kiB/sec/disk.", + }, + "raid_max_recovery_rate": Field{ + Type: FieldTypeNUM, + Name: "MaxSync", + Description: "For RAID1, the maximum recovery I/O load in kiB/sec/disk.", + }, + "raidintegritymode": Field{ + Type: FieldTypeSTR, + Name: "IntegMode", + Description: "The integrity mode", + }, + "raidintegrityblocksize": Field{ + Type: FieldTypeNUM, + Name: "IntegBlkSize", + Description: "The integrity block size", + }, + "integritymismatches": Field{ + Type: FieldTypeNUM, + Name: "IntegMismatches", + Description: "The number of integrity mismatches.", + }, + "move_pv": Field{ + Type: FieldTypeSTR, + Name: "Move", + Description: "For pvmove, Source PV of temporary LV created by pvmove.", + }, + "move_pv_uuid": Field{ + Type: FieldTypeSTR, + Name: "Move UUID", + Description: "For pvmove, the UUID of Source PV of temporary LV created by pvmove.", + }, + "convert_lv": Field{ + Type: FieldTypeSTR, + Name: "Convert", + Description: "For lvconvert, Name of temporary LV created by lvconvert.", + }, + "convert_lv_uuid": Field{ + Type: FieldTypeSTR, + Name: "Convert UUID", + Description: "For lvconvert, UUID of temporary LV created by lvconvert.", + }, + "mirror_log": Field{ + Type: FieldTypeSTR, + Name: "Log", + Description: "For mirrors, the LV holding the synchronisation log.", + }, + "mirror_log_uuid": Field{ + Type: FieldTypeSTR, + Name: "Log UUID", + Description: "For mirrors, the UUID of the LV holding the synchronisation log.", + }, + "data_lv": Field{ + Type: FieldTypeSTR, + Name: "Data", + Description: "For cache/thin/vdo pools, the LV holding the associated data.", + }, + "data_lv_uuid": Field{ + Type: FieldTypeSTR, + Name: "Data UUID", + Description: "For cache/thin/vdo pools, the UUID of the LV holding the associated data.", + }, + "metadata_lv": Field{ + Type: FieldTypeSTR, + Name: "Meta", + Description: "For cache/thin pools, the LV holding the associated metadata.", + }, + "metadata_lv_uuid": Field{ + Type: FieldTypeSTR, + Name: "Meta UUID", + Description: "For cache/thin pools, the UUID of the LV holding the associated metadata.", + }, + "pool_lv": Field{ + Type: FieldTypeSTR, + Name: "Pool", + Description: "For cache/thin/vdo volumes, the cache/thin/vdo pool LV for this volume.", + }, + "pool_lv_uuid": Field{ + Type: FieldTypeSTR, + Name: "Pool UUID", + Description: "For cache/thin/vdo volumes, the UUID of the cache/thin/vdo pool LV for this volume.", + }, + "lv_tags": Field{ + Type: FieldTypeSTR_LIST, + Name: "LV Tags", + Description: "Tags, if any.", + }, + "lv_profile": Field{ + Type: FieldTypeSTR, + Name: "LProfile", + Description: "Configuration profile attached to this LV.", + }, + "lv_lockargs": Field{ + Type: FieldTypeSTR, + Name: "LLockArgs", + Description: "Lock args of the LV used by lvmlockd.", + }, + "lv_time": Field{ + Type: FieldTypeTIM, + Name: "CTime", + Description: "Creation time of the LV, if known", + }, + "lv_time_removed": Field{ + Type: FieldTypeTIM, + Name: "RTime", + Description: "Removal time of the LV, if known", + }, + "lv_host": Field{ + Type: FieldTypeSTR, + Name: "Host", + Description: "Creation host of the LV, if known.", + }, + "lv_modules": Field{ + Type: FieldTypeSTR_LIST, + Name: "Modules", + Description: "Kernel device-mapper modules required for this LV.", + }, + "lv_historical": Field{ + Type: FieldTypeBIN, + Name: "Historical", + Description: "Set if the LV is historical.", + }, + "lv_kernel_major": Field{ + Type: FieldTypeSNUM, + Name: "KMaj", + Description: "Currently assigned major number or -1 if LV is not active.", + }, + "lv_kernel_minor": Field{ + Type: FieldTypeSNUM, + Name: "KMin", + Description: "Currently assigned minor number or -1 if LV is not active.", + }, + "lv_kernel_read_ahead": Field{ + Type: FieldTypeSIZ, + Name: "KRahead", + Description: "Currently-in-use read ahead setting in current units.", + }, + "lv_permissions": Field{ + Type: FieldTypeSTR, + Name: "LPerms", + Description: "LV permissions.", + }, + "lv_suspended": Field{ + Type: FieldTypeBIN, + Name: "Suspended", + Description: "Set if LV is suspended.", + }, + "lv_live_table": Field{ + Type: FieldTypeBIN, + Name: "LiveTable", + Description: "Set if LV has live table present.", + }, + "lv_inactive_table": Field{ + Type: FieldTypeBIN, + Name: "InactiveTable", + Description: "Set if LV has inactive table present.", + }, + "lv_device_open": Field{ + Type: FieldTypeBIN, + Name: "DevOpen", + Description: "Set if LV device is open.", + }, + "data_percent": Field{ + Type: FieldTypePCT, + Name: "Data%", + Description: "For snapshot, cache and thin pools and volumes, the percentage full if LV is active.", + }, + "snap_percent": Field{ + Type: FieldTypePCT, + Name: "Snap%", + Description: "For snapshots, the percentage full if LV is active.", + }, + "metadata_percent": Field{ + Type: FieldTypePCT, + Name: "Meta%", + Description: "For cache and thin pools, the percentage of metadata full if LV is active.", + }, + "copy_percent": Field{ + Type: FieldTypePCT, + Name: "Cpy%Sync", + Description: "For Cache, RAID, mirrors and pvmove, current percentage in-sync.", + }, + "sync_percent": Field{ + Type: FieldTypePCT, + Name: "Cpy%Sync", + Description: "For Cache, RAID, mirrors and pvmove, current percentage in-sync.", + }, + "cache_total_blocks": Field{ + Type: FieldTypeNUM, + Name: "CacheTotalBlocks", + Description: "Total cache blocks.", + }, + "cache_used_blocks": Field{ + Type: FieldTypeNUM, + Name: "CacheUsedBlocks", + Description: "Used cache blocks.", + }, + "cache_dirty_blocks": Field{ + Type: FieldTypeNUM, + Name: "CacheDirtyBlocks", + Description: "Dirty cache blocks.", + }, + "cache_read_hits": Field{ + Type: FieldTypeNUM, + Name: "CacheReadHits", + Description: "Cache read hits.", + }, + "cache_read_misses": Field{ + Type: FieldTypeNUM, + Name: "CacheReadMisses", + Description: "Cache read misses.", + }, + "cache_write_hits": Field{ + Type: FieldTypeNUM, + Name: "CacheWriteHits", + Description: "Cache write hits.", + }, + "cache_write_misses": Field{ + Type: FieldTypeNUM, + Name: "CacheWriteMisses", + Description: "Cache write misses.", + }, + "kernel_cache_settings": Field{ + Type: FieldTypeSTR_LIST, + Name: "KCacheSettings", + Description: "Cache settings/parameters as set in kernel, including default values (cached segments only).", + }, + "kernel_cache_policy": Field{ + Type: FieldTypeSTR, + Name: "KCachePolicy", + Description: "Cache policy used in kernel.", + }, + "kernel_metadata_format": Field{ + Type: FieldTypeNUM, + Name: "KMFmt", + Description: "Cache metadata format used in kernel.", + }, + "lv_health_status": Field{ + Type: FieldTypeSTR, + Name: "Health", + Description: "LV health status.", + }, + "kernel_discards": Field{ + Type: FieldTypeSTR, + Name: "KDiscards", + Description: "For thin pools, how discards are handled in kernel.", + }, + "lv_check_needed": Field{ + Type: FieldTypeBIN, + Name: "CheckNeeded", + Description: "For thin pools and cache volumes, whether metadata check is needed.", + }, + "lv_merge_failed": Field{ + Type: FieldTypeBIN, + Name: "MergeFailed", + Description: "Set if snapshot merge failed.", + }, + "lv_snapshot_invalid": Field{ + Type: FieldTypeBIN, + Name: "SnapInvalid", + Description: "Set if snapshot LV is invalid.", + }, + "vdo_operating_mode": Field{ + Type: FieldTypeSTR, + Name: "VDOOperatingMode", + Description: "For vdo pools, its current operating mode.", + }, + "vdo_compression_state": Field{ + Type: FieldTypeSTR, + Name: "VDOCompressionState", + Description: "For vdo pools, whether compression is running.", + }, + "vdo_index_state": Field{ + Type: FieldTypeSTR, + Name: "VDOIndexState", + Description: "For vdo pools, state of index for deduplication.", + }, + "vdo_used_size": Field{ + Type: FieldTypeNUM, + Name: "VDOUsedSize", + Description: "For vdo pools, currently used space.", + }, + "vdo_saving_percent": Field{ + Type: FieldTypeNUM, + Name: "VDOSaving%", + Description: "For vdo pools, percentage of saved space.", + }, + "writecache_total_blocks": Field{ + Type: FieldTypeNUM, + Name: "WCacheTotalBlocks", + Description: "Total writecache blocks.", + }, + "writecache_free_blocks": Field{ + Type: FieldTypeNUM, + Name: "WCacheFreeBlocks", + Description: "Total writecache free blocks.", + }, + "writecache_writeback_blocks": Field{ + Type: FieldTypeNUM, + Name: "WCacheWritebackBlocks", + Description: "Total writecache writeback blocks.", + }, + "writecache_error": Field{ + Type: FieldTypeNUM, + Name: "WCacheErrors", + Description: "Total writecache errors.", + }, + "lv_attr": Field{ + Type: FieldTypeSTR, + Name: "Attr", + Description: "Various attributes - see man page.", + }, + "pv_fmt": Field{ + Type: FieldTypeSTR, + Name: "Fmt", + Description: "Type of metadata.", + }, + "pv_uuid": Field{ + Type: FieldTypeSTR, + Name: "PV UUID", + Description: "Unique identifier.", + }, + "dev_size": Field{ + Type: FieldTypeSIZ, + Name: "DevSize", + Description: "Size of underlying device in current units.", + }, + "pv_name": Field{ + Type: FieldTypeSTR, + Name: "PV", + Description: "Name.", + }, + "pv_major": Field{ + Type: FieldTypeSTR, + Name: "Maj", + Description: "Device major number.", + }, + "pv_minor": Field{ + Type: FieldTypeSTR, + Name: "Min", + Description: "Device minor number.", + }, + "pv_mda_free": Field{ + Type: FieldTypeSIZ, + Name: "PMdaFree", + Description: "Free metadata area space on this device in current units.", + }, + "pv_mda_size": Field{ + Type: FieldTypeSIZ, + Name: "PMdaSize", + Description: "Size of smallest metadata area on this device in current units.", + }, + "pv_ext_vsn": Field{ + Type: FieldTypeNUM, + Name: "PExtVsn", + Description: "PV header extension version.", + }, + "pe_start": Field{ + Type: FieldTypeNUM, + Name: "1st PE", + Description: "Offset to the start of data on the underlying device.", + }, + "pv_size": Field{ + Type: FieldTypeSIZ, + Name: "PSize", + Description: "Size of PV in current units.", + }, + "pv_free": Field{ + Type: FieldTypeSIZ, + Name: "PFree", + Description: "Total amount of unallocated space in current units.", + }, + "pv_used": Field{ + Type: FieldTypeSIZ, + Name: "Used", + Description: "Total amount of allocated space in current units.", + }, + "pv_attr": Field{ + Type: FieldTypeSTR, + Name: "Attr", + Description: "Various attributes - see man page.", + }, + "pv_allocatable": Field{ + Type: FieldTypeBIN, + Name: "Allocatable", + Description: "Set if this device can be used for allocation.", + }, + "pv_exported": Field{ + Type: FieldTypeBIN, + Name: "Exported", + Description: "Set if this device is exported.", + }, + "pv_missing": Field{ + Type: FieldTypeBIN, + Name: "Missing", + Description: "Set if this device is missing in system.", + }, + "pv_pe_count": Field{ + Type: FieldTypeNUM, + Name: "PE", + Description: "Total number of Physical Extents.", + }, + "pv_pe_alloc_count": Field{ + Type: FieldTypeNUM, + Name: "Alloc", + Description: "Total number of allocated Physical Extents.", + }, + "pv_tags": Field{ + Type: FieldTypeSTR_LIST, + Name: "PV Tags", + Description: "Tags, if any.", + }, + "pv_mda_count": Field{ + Type: FieldTypeNUM, + Name: "#PMda", + Description: "Number of metadata areas on this device.", + }, + "pv_mda_used_count": Field{ + Type: FieldTypeNUM, + Name: "#PMdaUse", + Description: "Number of metadata areas in use on this device.", + }, + "pv_ba_start": Field{ + Type: FieldTypeSIZ, + Name: "BA Start", + Description: "Offset to the start of PV Bootloader Area on the underlying device in current units.", + }, + "pv_ba_size": Field{ + Type: FieldTypeSIZ, + Name: "BA Size", + Description: "Size of PV Bootloader Area in current units.", + }, + "pv_in_use": Field{ + Type: FieldTypeBIN, + Name: "PInUse", + Description: "Set if PV is used.", + }, + "pv_duplicate": Field{ + Type: FieldTypeBIN, + Name: "Duplicate", + Description: "Set if PV is an unchosen duplicate.", + }, + "vg_fmt": Field{ + Type: FieldTypeSTR, + Name: "Fmt", + Description: "Type of metadata.", + }, + "vg_uuid": Field{ + Type: FieldTypeSTR, + Name: "VG UUID", + Description: "Unique identifier.", + }, + "vg_name": Field{ + Type: FieldTypeSTR, + Name: "VG", + Description: "Name.", + }, + "vg_attr": Field{ + Type: FieldTypeSTR, + Name: "Attr", + Description: "Various attributes - see man page.", + }, + "vg_permissions": Field{ + Type: FieldTypeSTR, + Name: "VPerms", + Description: "VG permissions.", + }, + "vg_extendable": Field{ + Type: FieldTypeBIN, + Name: "Extendable", + Description: "Set if VG is extendable.", + }, + "vg_exported": Field{ + Type: FieldTypeBIN, + Name: "Exported", + Description: "Set if VG is exported.", + }, + "vg_partial": Field{ + Type: FieldTypeBIN, + Name: "Partial", + Description: "Set if VG is partial.", + }, + "vg_allocation_policy": Field{ + Type: FieldTypeSTR, + Name: "AllocPol", + Description: "VG allocation policy.", + }, + "vg_clustered": Field{ + Type: FieldTypeBIN, + Name: "Clustered", + Description: "Set if VG is clustered.", + }, + "vg_shared": Field{ + Type: FieldTypeBIN, + Name: "Shared", + Description: "Set if VG is shared.", + }, + "vg_size": Field{ + Type: FieldTypeSIZ, + Name: "VSize", + Description: "Total size of VG in current units.", + }, + "vg_free": Field{ + Type: FieldTypeSIZ, + Name: "VFree", + Description: "Total amount of free space in current units.", + }, + "vg_sysid": Field{ + Type: FieldTypeSTR, + Name: "SYS ID", + Description: "System ID of the VG indicating which host owns it.", + }, + "vg_systemid": Field{ + Type: FieldTypeSTR, + Name: "System ID", + Description: "System ID of the VG indicating which host owns it.", + }, + "vg_lock_type": Field{ + Type: FieldTypeSTR, + Name: "LockType", + Description: "Lock type of the VG used by lvmlockd.", + }, + "vg_lock_args": Field{ + Type: FieldTypeSTR, + Name: "VLockArgs", + Description: "Lock args of the VG used by lvmlockd.", + }, + "vg_extent_size": Field{ + Type: FieldTypeSIZ, + Name: "Ext", + Description: "Size of Physical Extents in current units.", + }, + "vg_extent_count": Field{ + Type: FieldTypeNUM, + Name: "#Ext", + Description: "Total number of Physical Extents.", + }, + "vg_free_count": Field{ + Type: FieldTypeNUM, + Name: "Free", + Description: "Total number of unallocated Physical Extents.", + }, + "max_lv": Field{ + Type: FieldTypeNUM, + Name: "MaxLV", + Description: "Maximum number of LVs allowed in VG or 0 if unlimited.", + }, + "max_pv": Field{ + Type: FieldTypeNUM, + Name: "MaxPV", + Description: "Maximum number of PVs allowed in VG or 0 if unlimited.", + }, + "pv_count": Field{ + Type: FieldTypeNUM, + Name: "#PV", + Description: "Number of PVs in VG.", + }, + "vg_missing_pv_count": Field{ + Type: FieldTypeNUM, + Name: "#PV Missing", + Description: "Number of PVs in VG which are missing.", + }, + "lv_count": Field{ + Type: FieldTypeNUM, + Name: "#LV", + Description: "Number of LVs.", + }, + "snap_count": Field{ + Type: FieldTypeNUM, + Name: "#SN", + Description: "Number of snapshots.", + }, + "vg_seqno": Field{ + Type: FieldTypeNUM, + Name: "Seq", + Description: "Revision number of internal metadata. Incremented whenever it changes.", + }, + "vg_tags": Field{ + Type: FieldTypeSTR_LIST, + Name: "VG Tags", + Description: "Tags, if any.", + }, + "vg_profile": Field{ + Type: FieldTypeSTR, + Name: "VProfile", + Description: "Configuration profile attached to this VG.", + }, + "vg_mda_count": Field{ + Type: FieldTypeNUM, + Name: "#VMda", + Description: "Number of metadata areas on this VG.", + }, + "vg_mda_used_count": Field{ + Type: FieldTypeNUM, + Name: "#VMdaUse", + Description: "Number of metadata areas in use on this VG.", + }, + "vg_mda_free": Field{ + Type: FieldTypeSIZ, + Name: "VMdaFree", + Description: "Free metadata area space for this VG in current units.", + }, + "vg_mda_size": Field{ + Type: FieldTypeSIZ, + Name: "VMdaSize", + Description: "Size of smallest metadata area for this VG in current units.", + }, + "vg_mda_copies": Field{ + Type: FieldTypeNUM, + Name: "#VMdaCps", + Description: "Target number of in use metadata areas in the VG.", + }, + "segtype": Field{ + Type: FieldTypeSTR, + Name: "Type", + Description: "Type of LV segment.", + }, + "stripes": Field{ + Type: FieldTypeNUM, + Name: "#Str", + Description: "Number of stripes or mirror/raid1 legs.", + }, + "data_stripes": Field{ + Type: FieldTypeNUM, + Name: "#DStr", + Description: "Number of data stripes or mirror/raid1 legs.", + }, + "reshape_len": Field{ + Type: FieldTypeSIZ, + Name: "RSize", + Description: "Size of out-of-place reshape space in current units.", + }, + "reshape_len_le": Field{ + Type: FieldTypeNUM, + Name: "RSize", + Description: "Size of out-of-place reshape space in logical extents.", + }, + "data_copies": Field{ + Type: FieldTypeNUM, + Name: "#Cpy", + Description: "Number of data copies.", + }, + "data_offset": Field{ + Type: FieldTypeNUM, + Name: "DOff", + Description: "Data offset on each image device.", + }, + "new_data_offset": Field{ + Type: FieldTypeNUM, + Name: "NOff", + Description: "New data offset after any reshape on each image device.", + }, + "parity_chunks": Field{ + Type: FieldTypeNUM, + Name: "#Par", + Description: "Number of (rotating) parity chunks.", + }, + "stripe_size": Field{ + Type: FieldTypeSIZ, + Name: "Stripe", + Description: "For stripes, amount of data placed on one device before switching to the next.", + }, + "region_size": Field{ + Type: FieldTypeSIZ, + Name: "Region", + Description: "For mirrors/raids, the unit of data per leg when synchronizing devices.", + }, + "chunk_size": Field{ + Type: FieldTypeSIZ, + Name: "Chunk", + Description: "For snapshots, the unit of data used when tracking changes.", + }, + "thin_count": Field{ + Type: FieldTypeNUM, + Name: "#Thins", + Description: "For thin pools, the number of thin volumes in this pool.", + }, + "discards": Field{ + Type: FieldTypeSTR, + Name: "Discards", + Description: "For thin pools, how discards are handled.", + }, + "cache_metadata_format": Field{ + Type: FieldTypeNUM, + Name: "CMFmt", + Description: "For cache, metadata format in use.", + }, + "cache_mode": Field{ + Type: FieldTypeSTR, + Name: "CacheMode", + Description: "For cache, how writes are cached.", + }, + "zero": Field{ + Type: FieldTypeBIN, + Name: "Zero", + Description: "For thin pools and volumes, if zeroing is enabled.", + }, + "transaction_id": Field{ + Type: FieldTypeNUM, + Name: "TransId", + Description: "For thin pools, the transaction id and creation transaction id for thins.", + }, + "thin_id": Field{ + Type: FieldTypeNUM, + Name: "ThId", + Description: "For thin volume, the thin device id.", + }, + "seg_start": Field{ + Type: FieldTypeSIZ, + Name: "Start", + Description: "Offset within the LV to the start of the segment in current units.", + }, + "seg_start_pe": Field{ + Type: FieldTypeNUM, + Name: "Start", + Description: "Offset within the LV to the start of the segment in physical extents.", + }, + "seg_size": Field{ + Type: FieldTypeSIZ, + Name: "SSize", + Description: "Size of segment in current units.", + }, + "seg_size_pe": Field{ + Type: FieldTypeSIZ, + Name: "SSize", + Description: "Size of segment in physical extents.", + }, + "seg_tags": Field{ + Type: FieldTypeSTR_LIST, + Name: "Seg Tags", + Description: "Tags, if any.", + }, + "seg_pe_ranges": Field{ + Type: FieldTypeSTR_LIST, + Name: "PE Ranges", + Description: "Ranges of Physical Extents of underlying devices in command line format (deprecated, use seg_le_ranges for common format).", + }, + "seg_le_ranges": Field{ + Type: FieldTypeSTR_LIST, + Name: "LE Ranges", + Description: "Ranges of Logical Extents of underlying devices in command line format.", + }, + "seg_metadata_le_ranges": Field{ + Type: FieldTypeSTR_LIST, + Name: "Metadata LE Ranges", + Description: "Ranges of Logical Extents of underlying metadata devices in command line format.", + }, + "devices": Field{ + Type: FieldTypeSTR_LIST, + Name: "Devices", + Description: "Underlying devices used with starting extent numbers.", + }, + "metadata_devices": Field{ + Type: FieldTypeSTR_LIST, + Name: "Metadata Devs", + Description: "Underlying metadata devices used with starting extent numbers.", + }, + "seg_monitor": Field{ + Type: FieldTypeSTR, + Name: "Monitor", + Description: "Dmeventd monitoring status of the segment.", + }, + "cache_policy": Field{ + Type: FieldTypeSTR, + Name: "CachePolicy", + Description: "The cache policy (cached segments only).", + }, + "cache_settings": Field{ + Type: FieldTypeSTR_LIST, + Name: "CacheSettings", + Description: "Cache settings/parameters (cached segments only).", + }, + "vdo_compression": Field{ + Type: FieldTypeBIN, + Name: "VDOCompression", + Description: "Set for compressed LV (vdopool).", + }, + "vdo_deduplication": Field{ + Type: FieldTypeBIN, + Name: "VDODeduplication", + Description: "Set for deduplicated LV (vdopool).", + }, + "vdo_use_metadata_hints": Field{ + Type: FieldTypeBIN, + Name: "VDOMetadataHints", + Description: "Use REQ_SYNC for writes (vdopool).", + }, + "vdo_minimum_io_size": Field{ + Type: FieldTypeNUM, + Name: "VDOMinimumIOSize", + Description: "Minimum acceptable IO size (vdopool).", + }, + "vdo_block_map_cache_size": Field{ + Type: FieldTypeSIZ, + Name: "VDOBlockMapCacheSize", + Description: "Allocated caching size (vdopool).", + }, + "vdo_block_map_era_length": Field{ + Type: FieldTypeNUM, + Name: "VDOBlockMapEraLength", + Description: "Speed of cache writes (vdopool).", + }, + "vdo_use_sparse_index": Field{ + Type: FieldTypeBIN, + Name: "VDOSparseIndex", + Description: "Sparse indexing (vdopool).", + }, + "vdo_index_memory_size": Field{ + Type: FieldTypeSIZ, + Name: "VDOIndexMemorySize", + Description: "Allocated indexing memory (vdopool).", + }, + "vdo_slab_size": Field{ + Type: FieldTypeSIZ, + Name: "VDOSlabSize", + Description: "Increment size for growing (vdopool).", + }, + "vdo_ack_threads": Field{ + Type: FieldTypeNUM, + Name: "VDOAckThreads", + Description: "Acknowledging threads (vdopool).", + }, + "vdo_bio_threads": Field{ + Type: FieldTypeNUM, + Name: "VDOBioThreads", + Description: "IO submitting threads (vdopool).", + }, + "vdo_bio_rotation": Field{ + Type: FieldTypeNUM, + Name: "VDOBioRotation", + Description: "IO enqueue (vdopool).", + }, + "vdo_cpu_threads": Field{ + Type: FieldTypeNUM, + Name: "VDOCPUThreads", + Description: "CPU threads for compression and hashing (vdopool).", + }, + "vdo_hash_zone_threads": Field{ + Type: FieldTypeNUM, + Name: "VDOHashZoneThreads", + Description: "Threads for subdivide parts (vdopool).", + }, + "vdo_logical_threads": Field{ + Type: FieldTypeNUM, + Name: "VDOLogicalThreads", + Description: "Logical threads for subdivide parts (vdopool).", + }, + "vdo_physical_threads": Field{ + Type: FieldTypeNUM, + Name: "VDOPhysicalThreads", + Description: "Physical threads for subdivide parts (vdopool).", + }, + "vdo_max_discard": Field{ + Type: FieldTypeNUM, + Name: "VDOMaxDiscard", + Description: "Maximum discard size volume can recieve (vdopool).", + }, + "vdo_write_policy": Field{ + Type: FieldTypeSTR, + Name: "VDOWritePolicy", + Description: "Specified write policy (vdopool).", + }, + "vdo_header_size": Field{ + Type: FieldTypeSIZ, + Name: "VDOHeaderSize", + Description: "Header size at front of vdopool.", + }, + "pvseg_start": Field{ + Type: FieldTypeNUM, + Name: "Start", + Description: "Physical Extent number of start of segment.", + }, + "pvseg_size": Field{ + Type: FieldTypeNUM, + Name: "SSize", + Description: "Number of extents in segment.", + }, +} + +var lvmEnums = map[string][]string{ + "lv_permissions": []string{"writeable", "read-only", "read-only-override"}, + "lv_when_full": []string{"error", "queue"}, + "vg_permissions": []string{"writeable", "read-only"}, +} diff --git a/collector/lv.go b/collector/lv.go new file mode 100644 index 0000000..55d3ca5 --- /dev/null +++ b/collector/lv.go @@ -0,0 +1,202 @@ +package collector + +import ( + "encoding/json" + "fmt" + "sort" + "strconv" + "strings" + "time" +) + +var ( + lvmLabels = map[string]bool{ + "lv_layout": true, + "lv_host": true, + "lv_uuid": true, + "vg_uuid": true, + "pv_uuid": true, + "lv_name": true, + "vg_name": true, + "pv_name": true, + } + lvmEnumsCustom = map[string][]string{ + "raid_sync_action": {"idle", "frozen", "resync", "recover", "check", "repair"}, + "lv_health_status": {"", "partial"}, + "vg_allocation_policy": {"normal", "contiguous", "cling", "anywhere", "inherited"}, + } +) + +type Metric struct { + Field string + Value float64 + Label *Label + Help string +} + +type Label struct { + Field string + Value string +} + +type MetricsLabels struct { + Namespace string + Metrics []Metric + Labels []Label +} + +func isIgnore(field string) bool { + // nolint + if strings.HasSuffix(field, "_attr") { + return true + } + + return false +} + +func isLabel(field string) bool { + return lvmLabels[field] +} + +func toMetric(field string, value string) (*Metric, error) { + enum, ok := lvmEnumsCustom[field] + if !ok { + enum, ok = lvmEnums[field] + } + if ok { + mv := -1 + for i, v := range enum { + if v == value { + mv = i + } + } + + m := Metric{ + Field: field, + Value: float64(mv), + } + + f, ok := lvmFields[field] + if ok { + m.Help = f.Name + " - " + f.Description + } + + m.Help += ` -1: undefined, ` + for i, s := range enum { + m.Help += fmt.Sprintf(`%d: %s`, i, s) + if i != len(enum)-1 { + m.Help += `, ` + } + } + + return &m, nil + } + + f := lvmFields[field] + + m := Metric{ + Field: field, + Help: f.Name + " - " + f.Description, + } + + switch f.Type { + case FieldTypeSTR, FieldTypeSTR_LIST: + return nil, nil + case FieldTypeTIM: + if value == "" { + return &m, nil + } + + // 2020-10-05 18:06:13 +0000 + t, err := time.Parse("2006-01-02 15:04:05 -0700", value) + if err != nil { + return nil, fmt.Errorf("field(%s): %w", field, err) + } + m.Value = float64(t.Unix()) + return &m, nil + + case FieldTypeBIN, FieldTypeNUM, FieldTypeSNUM, FieldTypeSIZ, FieldTypePCT: + value = strings.TrimSuffix(value, "%") + value = strings.TrimSuffix(value, "B") + } + + switch value { + case "unmanaged", "auto": + value = "" + } + + if value != "" { + var err error + m.Value, err = strconv.ParseFloat(value, 64) + if err != nil { + return nil, fmt.Errorf("field(%s): %w", field, err) + } + } else { + m.Value = -1 + } + + return &m, nil +} + +func ReportsToMetrics(b []byte) ([]MetricsLabels, error) { + reports, err := parseReports(b) + if err != nil { + return nil, err + } + + var mls []MetricsLabels + for _, report := range reports { + for namespace, fieldsValues := range report { + for _, fields := range fieldsValues { + ml := MetricsLabels{Namespace: namespace} + for field, value := range fields { + if isIgnore(field) { + continue + } + if isLabel(field) { + ml.Labels = append(ml.Labels, Label{ + Field: field, + Value: value, + }) + continue + } + + m, err := toMetric(field, value) + if err != nil { + return nil, err + } + if m != nil { + ml.Metrics = append(ml.Metrics, *m) + } + } + if len(ml.Metrics) > 0 { + sort.Slice(ml.Metrics, func(i, j int) bool { + return ml.Metrics[i].Field < ml.Metrics[j].Field + }) + sort.Slice(ml.Labels, func(i, j int) bool { + return ml.Labels[i].Field < ml.Labels[j].Field + }) + + mls = append(mls, ml) + } + } + } + } + + return mls, nil +} + +type Reports []map[string][]map[string]string // []map[TYPE(lv/vg/pv)][]map[FIELD]VALUE + +// +func parseReports(b []byte) (Reports, error) { + var v struct { + Report Reports + } + err := json.Unmarshal(b, &v) + if err != nil { + return nil, err + } + + return v.Report, nil +} diff --git a/collector/lv_test.go b/collector/lv_test.go new file mode 100644 index 0000000..98c11e1 --- /dev/null +++ b/collector/lv_test.go @@ -0,0 +1,358 @@ +package collector + +import ( + "testing" + + "github.com/stretchr/testify/require" +) + +// --reportformat json -o all --units B --binary +func TestReportsToMetrics(t *testing.T) { + type args struct { + b []byte + } + tests := []struct { + name string + args args + want []MetricsLabels + wantErr bool + }{ + { + name: "empty", + args: args{ + b: []byte(`{"report": []}`), + }, + want: nil, + wantErr: false, + }, + { + name: "lv all fields", + args: args{ + b: []byte(`{ + "report": [ + { + "lv": [ + {"lv_uuid":"rKAgQS-1WI6-H43d-amB7-IGFr-kJOI-KhNAuA", "lv_name":"lvmirror", "lv_full_name":"vgdata/lvmirror", "lv_path":"/dev/vgdata/lvmirror", "lv_dm_path":"/dev/mapper/vgdata-lvmirror", "lv_parent":"", "lv_layout":"raid,raid1", "lv_role":"public", "lv_initial_image_sync":"1", "lv_image_synced":"0", "lv_merging":"0", "lv_converting":"0", "lv_allocation_policy":"inherit", "lv_allocation_locked":"0", "lv_fixed_minor":"0", "lv_skip_activation":"0", "lv_when_full":"", "lv_active":"active", "lv_active_locally":"1", "lv_active_remotely":"0", "lv_active_exclusively":"1", "lv_major":"-1", "lv_minor":"-1", "lv_read_ahead":"auto", "lv_size":"3221225472B", "lv_metadata_size":"", "seg_count":"1", "origin":"", "origin_uuid":"", "origin_size":"", "lv_ancestors":"", "lv_full_ancestors":"", "lv_descendants":"", "lv_full_descendants":"", "raid_mismatch_count":"0", "raid_sync_action":"idle", "raid_write_behind":"", "raid_min_recovery_rate":"", "raid_max_recovery_rate":"", "move_pv":"", "move_pv_uuid":"", "convert_lv":"", "convert_lv_uuid":"", "mirror_log":"", "mirror_log_uuid":"", "data_lv":"", "data_lv_uuid":"", "metadata_lv":"", "metadata_lv_uuid":"", "pool_lv":"", "pool_lv_uuid":"", "lv_tags":"", "lv_profile":"", "lv_lockargs":"", "lv_time":"2020-10-05 17:24:40 +0000", "lv_time_removed":"", "lv_host":"LVM-TEST", "lv_modules":"raid", "lv_historical":"0", "lv_kernel_major":"253", "lv_kernel_minor":"4", "lv_kernel_read_ahead":"131072B", "lv_permissions":"writeable", "lv_suspended":"0", "lv_live_table":"1", "lv_inactive_table":"0", "lv_device_open":"0", "data_percent":"", "snap_percent":"", "metadata_percent":"", "copy_percent":"100.00", "sync_percent":"100.00", "cache_total_blocks":"", "cache_used_blocks":"", "cache_dirty_blocks":"", "cache_read_hits":"", "cache_read_misses":"", "cache_write_hits":"", "cache_write_misses":"", "kernel_cache_settings":"", "kernel_cache_policy":"", "kernel_metadata_format":"", "lv_health_status":"", "kernel_discards":"", "lv_check_needed":"-1", "lv_merge_failed":"-1", "lv_snapshot_invalid":"-1", "vdo_operating_mode":"", "vdo_compression_state":"", "vdo_index_state":"", "vdo_used_size":"", "vdo_saving_percent":"", "lv_attr":"rwi-a-r---", "vg_fmt":"lvm2", "vg_uuid":"GlVa5G-kmsv-G0Hu-fN1W-2p3B-Lh2f-7MY7K4", "vg_name":"vgdata", "vg_attr":"wz--n-", "vg_permissions":"writeable", "vg_extendable":"1", "vg_exported":"0", "vg_partial":"0", "vg_allocation_policy":"normal", "vg_clustered":"0", "vg_shared":"0", "vg_size":"21466447872B", "vg_free":"13941866496B", "vg_sysid":"", "vg_systemid":"", "vg_lock_type":"", "vg_lock_args":"", "vg_extent_size":"4194304B", "vg_extent_count":"5118", "vg_free_count":"3324", "max_lv":"0", "max_pv":"0", "pv_count":"2", "vg_missing_pv_count":"0", "lv_count":"2", "snap_count":"0", "vg_seqno":"32", "vg_tags":"", "vg_profile":"", "vg_mda_count":"2", "vg_mda_used_count":"2", "vg_mda_free":"518656B", "vg_mda_size":"1044480B", "vg_mda_copies":"unmanaged"}, + {"lv_uuid":"i30Cyh-D0cc-Rnll-EqHY-WawI-12P0-1tZ4XJ", "lv_name":"lvol0", "lv_full_name":"vgdata/lvol0", "lv_path":"/dev/vgdata/lvol0", "lv_dm_path":"/dev/mapper/vgdata-lvol0", "lv_parent":"", "lv_layout":"linear", "lv_role":"public", "lv_initial_image_sync":"0", "lv_image_synced":"0", "lv_merging":"0", "lv_converting":"0", "lv_allocation_policy":"inherit", "lv_allocation_locked":"0", "lv_fixed_minor":"0", "lv_skip_activation":"0", "lv_when_full":"", "lv_active":"active", "lv_active_locally":"1", "lv_active_remotely":"0", "lv_active_exclusively":"1", "lv_major":"-1", "lv_minor":"-1", "lv_read_ahead":"auto", "lv_size":"1073741824B", "lv_metadata_size":"", "seg_count":"1", "origin":"", "origin_uuid":"", "origin_size":"", "lv_ancestors":"", "lv_full_ancestors":"", "lv_descendants":"", "lv_full_descendants":"", "raid_mismatch_count":"", "raid_sync_action":"", "raid_write_behind":"", "raid_min_recovery_rate":"", "raid_max_recovery_rate":"", "move_pv":"", "move_pv_uuid":"", "convert_lv":"", "convert_lv_uuid":"", "mirror_log":"", "mirror_log_uuid":"", "data_lv":"", "data_lv_uuid":"", "metadata_lv":"", "metadata_lv_uuid":"", "pool_lv":"", "pool_lv_uuid":"", "lv_tags":"", "lv_profile":"", "lv_lockargs":"", "lv_time":"2020-10-05 18:06:13 +0000", "lv_time_removed":"", "lv_host":"LVM-TEST", "lv_modules":"", "lv_historical":"0", "lv_kernel_major":"253", "lv_kernel_minor":"5", "lv_kernel_read_ahead":"131072B", "lv_permissions":"writeable", "lv_suspended":"0", "lv_live_table":"1", "lv_inactive_table":"0", "lv_device_open":"0", "data_percent":"", "snap_percent":"", "metadata_percent":"", "copy_percent":"", "sync_percent":"", "cache_total_blocks":"", "cache_used_blocks":"", "cache_dirty_blocks":"", "cache_read_hits":"", "cache_read_misses":"", "cache_write_hits":"", "cache_write_misses":"", "kernel_cache_settings":"", "kernel_cache_policy":"", "kernel_metadata_format":"", "lv_health_status":"", "kernel_discards":"", "lv_check_needed":"-1", "lv_merge_failed":"-1", "lv_snapshot_invalid":"-1", "vdo_operating_mode":"", "vdo_compression_state":"", "vdo_index_state":"", "vdo_used_size":"", "vdo_saving_percent":"", "lv_attr":"-wi-a-----", "vg_fmt":"lvm2", "vg_uuid":"GlVa5G-kmsv-G0Hu-fN1W-2p3B-Lh2f-7MY7K4", "vg_name":"vgdata", "vg_attr":"wz--n-", "vg_permissions":"writeable", "vg_extendable":"1", "vg_exported":"0", "vg_partial":"0", "vg_allocation_policy":"normal", "vg_clustered":"0", "vg_shared":"0", "vg_size":"21466447872B", "vg_free":"13941866496B", "vg_sysid":"", "vg_systemid":"", "vg_lock_type":"", "vg_lock_args":"", "vg_extent_size":"4194304B", "vg_extent_count":"5118", "vg_free_count":"3324", "max_lv":"0", "max_pv":"0", "pv_count":"2", "vg_missing_pv_count":"0", "lv_count":"2", "snap_count":"0", "vg_seqno":"32", "vg_tags":"", "vg_profile":"", "vg_mda_count":"2", "vg_mda_used_count":"2", "vg_mda_free":"518656B", "vg_mda_size":"1044480B", "vg_mda_copies":"unmanaged"} + ] + } + ] + }`), + }, + want: []MetricsLabels{ + { + Namespace: "lv", + Metrics: []Metric{ + {Field: "cache_dirty_blocks", Value: -1, Help: "CacheDirtyBlocks - Dirty cache blocks."}, + {Field: "cache_read_hits", Value: -1, Help: "CacheReadHits - Cache read hits."}, + {Field: "cache_read_misses", Value: -1, Help: "CacheReadMisses - Cache read misses."}, + {Field: "cache_total_blocks", Value: -1, Help: "CacheTotalBlocks - Total cache blocks."}, + {Field: "cache_used_blocks", Value: -1, Help: "CacheUsedBlocks - Used cache blocks."}, + {Field: "cache_write_hits", Value: -1, Help: "CacheWriteHits - Cache write hits."}, + {Field: "cache_write_misses", Value: -1, Help: "CacheWriteMisses - Cache write misses."}, + {Field: "copy_percent", Value: 100, Help: "Cpy%Sync - For Cache, RAID, mirrors and pvmove, current percentage in-sync."}, + {Field: "data_percent", Value: -1, Help: "Data% - For snapshot, cache and thin pools and volumes, the percentage full if LV is active."}, + {Field: "kernel_metadata_format", Value: -1, Help: "KMFmt - Cache metadata format used in kernel."}, + {Field: "lv_active_exclusively", Value: 1, Help: "ActExcl - Set if the LV is active exclusively."}, + {Field: "lv_active_locally", Value: 1, Help: "ActLocal - Set if the LV is active locally."}, + {Field: "lv_active_remotely", Value: 0, Help: "ActRemote - Set if the LV is active remotely."}, + {Field: "lv_allocation_locked", Value: 0, Help: "AllocLock - Set if LV is locked against allocation changes."}, + {Field: "lv_check_needed", Value: -1, Help: "CheckNeeded - For thin pools and cache volumes, whether metadata check is needed."}, + {Field: "lv_converting", Value: 0, Help: "Converting - Set if LV is being converted."}, + {Field: "lv_count", Value: 2, Help: "#LV - Number of LVs."}, + {Field: "lv_device_open", Value: 0, Help: "DevOpen - Set if LV device is open."}, + {Field: "lv_fixed_minor", Value: 0, Help: "FixMin - Set if LV has fixed minor number assigned."}, + {Field: "lv_health_status", Value: 0, Help: "Health - LV health status. -1: undefined, 0: , 1: partial"}, + {Field: "lv_historical", Value: 0, Help: "Historical - Set if the LV is historical."}, + {Field: "lv_image_synced", Value: 0, Help: "ImgSynced - Set if mirror/RAID image is synchronized."}, + {Field: "lv_inactive_table", Value: 0, Help: "InactiveTable - Set if LV has inactive table present."}, + {Field: "lv_initial_image_sync", Value: 1, Help: "InitImgSync - Set if mirror/RAID images underwent initial resynchronization."}, + {Field: "lv_kernel_major", Value: 253, Help: "KMaj - Currently assigned major number or -1 if LV is not active."}, + {Field: "lv_kernel_minor", Value: 4, Help: "KMin - Currently assigned minor number or -1 if LV is not active."}, + {Field: "lv_kernel_read_ahead", Value: 131072, Help: "KRahead - Currently-in-use read ahead setting in current units."}, + {Field: "lv_live_table", Value: 1, Help: "LiveTable - Set if LV has live table present."}, + {Field: "lv_major", Value: -1, Help: "Maj - Persistent major number or -1 if not persistent."}, + {Field: "lv_merge_failed", Value: -1, Help: "MergeFailed - Set if snapshot merge failed."}, + {Field: "lv_merging", Value: 0, Help: "Merging - Set if snapshot LV is being merged to origin."}, + {Field: "lv_metadata_size", Value: -1, Help: "MSize - For thin and cache pools, the size of the LV that holds the metadata."}, + {Field: "lv_minor", Value: -1, Help: "Min - Persistent minor number or -1 if not persistent."}, + {Field: "lv_permissions", Value: 0, Help: "LPerms - LV permissions. -1: undefined, 0: writeable, 1: read-only, 2: read-only-override"}, + {Field: "lv_read_ahead", Value: -1, Help: "Rahead - Read ahead setting in current units."}, + {Field: "lv_size", Value: 3.221225472e+09, Help: "LSize - Size of LV in current units."}, + {Field: "lv_skip_activation", Value: 0, Help: "SkipAct - Set if LV is skipped on activation."}, + {Field: "lv_snapshot_invalid", Value: -1, Help: "SnapInvalid - Set if snapshot LV is invalid."}, + {Field: "lv_suspended", Value: 0, Help: "Suspended - Set if LV is suspended."}, + {Field: "lv_time", Value: 1.60191868e+09, Help: "CTime - Creation time of the LV, if known"}, + {Field: "lv_time_removed", Value: 0, Help: "RTime - Removal time of the LV, if known"}, + {Field: "lv_when_full", Value: -1, Help: "WhenFull - For thin pools, behavior when full. -1: undefined, 0: error, 1: queue"}, + {Field: "max_lv", Value: 0, Help: "MaxLV - Maximum number of LVs allowed in VG or 0 if unlimited."}, + {Field: "max_pv", Value: 0, Help: "MaxPV - Maximum number of PVs allowed in VG or 0 if unlimited."}, + {Field: "metadata_percent", Value: -1, Help: "Meta% - For cache and thin pools, the percentage of metadata full if LV is active."}, + {Field: "origin_size", Value: -1, Help: "OSize - For snapshots, the size of the origin device of this LV."}, + {Field: "pv_count", Value: 2, Help: "#PV - Number of PVs in VG."}, + {Field: "raid_max_recovery_rate", Value: -1, Help: "MaxSync - For RAID1, the maximum recovery I/O load in kiB/sec/disk."}, + {Field: "raid_min_recovery_rate", Value: -1, Help: "MinSync - For RAID1, the minimum recovery I/O load in kiB/sec/disk."}, + {Field: "raid_mismatch_count", Value: 0, Help: "Mismatches - For RAID, number of mismatches found or repaired."}, + {Field: "raid_sync_action", Value: 0, Help: "SyncAction - For RAID, the current synchronization action being performed. -1: undefined, 0: idle, 1: frozen, 2: resync, 3: recover, 4: check, 5: repair"}, + {Field: "raid_write_behind", Value: -1, Help: "WBehind - For RAID1, the number of outstanding writes allowed to writemostly devices."}, + {Field: "seg_count", Value: 1, Help: "#Seg - Number of segments in LV."}, + {Field: "snap_count", Value: 0, Help: "#SN - Number of snapshots."}, + {Field: "snap_percent", Value: -1, Help: "Snap% - For snapshots, the percentage full if LV is active."}, + {Field: "sync_percent", Value: 100, Help: "Cpy%Sync - For Cache, RAID, mirrors and pvmove, current percentage in-sync."}, + {Field: "vdo_saving_percent", Value: -1, Help: "VDOSaving% - For vdo pools, percentage of saved space."}, + {Field: "vdo_used_size", Value: -1, Help: "VDOUsedSize - For vdo pools, currently used space."}, + {Field: "vg_allocation_policy", Value: 0, Help: "AllocPol - VG allocation policy. -1: undefined, 0: normal, 1: contiguous, 2: cling, 3: anywhere, 4: inherited"}, + {Field: "vg_clustered", Value: 0, Help: "Clustered - Set if VG is clustered."}, + {Field: "vg_exported", Value: 0, Help: "Exported - Set if VG is exported."}, + {Field: "vg_extendable", Value: 1, Help: "Extendable - Set if VG is extendable."}, + {Field: "vg_extent_count", Value: 5118, Help: "#Ext - Total number of Physical Extents."}, + {Field: "vg_extent_size", Value: 4.194304e+06, Help: "Ext - Size of Physical Extents in current units."}, + {Field: "vg_free", Value: 1.3941866496e+10, Help: "VFree - Total amount of free space in current units."}, + {Field: "vg_free_count", Value: 3324, Help: "Free - Total number of unallocated Physical Extents."}, + {Field: "vg_mda_copies", Value: -1, Help: "#VMdaCps - Target number of in use metadata areas in the VG."}, + {Field: "vg_mda_count", Value: 2, Help: "#VMda - Number of metadata areas on this VG."}, + {Field: "vg_mda_free", Value: 518656, Help: "VMdaFree - Free metadata area space for this VG in current units."}, + {Field: "vg_mda_size", Value: 1.04448e+06, Help: "VMdaSize - Size of smallest metadata area for this VG in current units."}, + {Field: "vg_mda_used_count", Value: 2, Help: "#VMdaUse - Number of metadata areas in use on this VG."}, + {Field: "vg_missing_pv_count", Value: 0, Help: "#PV Missing - Number of PVs in VG which are missing."}, + {Field: "vg_partial", Value: 0, Help: "Partial - Set if VG is partial."}, + {Field: "vg_permissions", Value: 0, Help: "VPerms - VG permissions. -1: undefined, 0: writeable, 1: read-only"}, + {Field: "vg_seqno", Value: 32, Help: "Seq - Revision number of internal metadata. Incremented whenever it changes."}, + {Field: "vg_shared", Value: 0, Help: "Shared - Set if VG is shared."}, + {Field: "vg_size", Value: 2.1466447872e+10, Help: "VSize - Total size of VG in current units."}, + }, + Labels: []Label{ + {Field: "lv_host", Value: "LVM-TEST"}, + {Field: "lv_layout", Value: "raid,raid1"}, + {Field: "lv_name", Value: "lvmirror"}, + {Field: "lv_uuid", Value: "rKAgQS-1WI6-H43d-amB7-IGFr-kJOI-KhNAuA"}, + {Field: "vg_name", Value: "vgdata"}, + {Field: "vg_uuid", Value: "GlVa5G-kmsv-G0Hu-fN1W-2p3B-Lh2f-7MY7K4"}, + }, + }, + { + Namespace: "lv", + Metrics: []Metric{ + {Field: "cache_dirty_blocks", Value: -1, Help: "CacheDirtyBlocks - Dirty cache blocks."}, + {Field: "cache_read_hits", Value: -1, Help: "CacheReadHits - Cache read hits."}, + {Field: "cache_read_misses", Value: -1, Help: "CacheReadMisses - Cache read misses."}, + {Field: "cache_total_blocks", Value: -1, Help: "CacheTotalBlocks - Total cache blocks."}, + {Field: "cache_used_blocks", Value: -1, Help: "CacheUsedBlocks - Used cache blocks."}, + {Field: "cache_write_hits", Value: -1, Help: "CacheWriteHits - Cache write hits."}, + {Field: "cache_write_misses", Value: -1, Help: "CacheWriteMisses - Cache write misses."}, + {Field: "copy_percent", Value: -1, Help: "Cpy%Sync - For Cache, RAID, mirrors and pvmove, current percentage in-sync."}, + {Field: "data_percent", Value: -1, Help: "Data% - For snapshot, cache and thin pools and volumes, the percentage full if LV is active."}, + {Field: "kernel_metadata_format", Value: -1, Help: "KMFmt - Cache metadata format used in kernel."}, + {Field: "lv_active_exclusively", Value: 1, Help: "ActExcl - Set if the LV is active exclusively."}, + {Field: "lv_active_locally", Value: 1, Help: "ActLocal - Set if the LV is active locally."}, + {Field: "lv_active_remotely", Value: 0, Help: "ActRemote - Set if the LV is active remotely."}, + {Field: "lv_allocation_locked", Value: 0, Help: "AllocLock - Set if LV is locked against allocation changes."}, + {Field: "lv_check_needed", Value: -1, Help: "CheckNeeded - For thin pools and cache volumes, whether metadata check is needed."}, + {Field: "lv_converting", Value: 0, Help: "Converting - Set if LV is being converted."}, + {Field: "lv_count", Value: 2, Help: "#LV - Number of LVs."}, + {Field: "lv_device_open", Value: 0, Help: "DevOpen - Set if LV device is open."}, + {Field: "lv_fixed_minor", Value: 0, Help: "FixMin - Set if LV has fixed minor number assigned."}, + {Field: "lv_health_status", Value: 0, Help: "Health - LV health status. -1: undefined, 0: , 1: partial"}, + {Field: "lv_historical", Value: 0, Help: "Historical - Set if the LV is historical."}, + {Field: "lv_image_synced", Value: 0, Help: "ImgSynced - Set if mirror/RAID image is synchronized."}, + {Field: "lv_inactive_table", Value: 0, Help: "InactiveTable - Set if LV has inactive table present."}, + {Field: "lv_initial_image_sync", Value: 0, Help: "InitImgSync - Set if mirror/RAID images underwent initial resynchronization."}, + {Field: "lv_kernel_major", Value: 253, Help: "KMaj - Currently assigned major number or -1 if LV is not active."}, + {Field: "lv_kernel_minor", Value: 5, Help: "KMin - Currently assigned minor number or -1 if LV is not active."}, + {Field: "lv_kernel_read_ahead", Value: 131072, Help: "KRahead - Currently-in-use read ahead setting in current units."}, + {Field: "lv_live_table", Value: 1, Help: "LiveTable - Set if LV has live table present."}, + {Field: "lv_major", Value: -1, Help: "Maj - Persistent major number or -1 if not persistent."}, + {Field: "lv_merge_failed", Value: -1, Help: "MergeFailed - Set if snapshot merge failed."}, + {Field: "lv_merging", Value: 0, Help: "Merging - Set if snapshot LV is being merged to origin."}, + {Field: "lv_metadata_size", Value: -1, Help: "MSize - For thin and cache pools, the size of the LV that holds the metadata."}, + {Field: "lv_minor", Value: -1, Help: "Min - Persistent minor number or -1 if not persistent."}, + {Field: "lv_permissions", Value: 0, Help: "LPerms - LV permissions. -1: undefined, 0: writeable, 1: read-only, 2: read-only-override"}, + {Field: "lv_read_ahead", Value: -1, Help: "Rahead - Read ahead setting in current units."}, + {Field: "lv_size", Value: 1.073741824e+09, Help: "LSize - Size of LV in current units."}, + {Field: "lv_skip_activation", Value: 0, Help: "SkipAct - Set if LV is skipped on activation."}, + {Field: "lv_snapshot_invalid", Value: -1, Help: "SnapInvalid - Set if snapshot LV is invalid."}, + {Field: "lv_suspended", Value: 0, Help: "Suspended - Set if LV is suspended."}, + {Field: "lv_time", Value: 1.601921173e+09, Help: "CTime - Creation time of the LV, if known"}, + {Field: "lv_time_removed", Value: 0, Help: "RTime - Removal time of the LV, if known"}, + {Field: "lv_when_full", Value: -1, Help: "WhenFull - For thin pools, behavior when full. -1: undefined, 0: error, 1: queue"}, + {Field: "max_lv", Value: 0, Help: "MaxLV - Maximum number of LVs allowed in VG or 0 if unlimited."}, + {Field: "max_pv", Value: 0, Help: "MaxPV - Maximum number of PVs allowed in VG or 0 if unlimited."}, + {Field: "metadata_percent", Value: -1, Help: "Meta% - For cache and thin pools, the percentage of metadata full if LV is active."}, + {Field: "origin_size", Value: -1, Help: "OSize - For snapshots, the size of the origin device of this LV."}, + {Field: "pv_count", Value: 2, Help: "#PV - Number of PVs in VG."}, + {Field: "raid_max_recovery_rate", Value: -1, Help: "MaxSync - For RAID1, the maximum recovery I/O load in kiB/sec/disk."}, + {Field: "raid_min_recovery_rate", Value: -1, Help: "MinSync - For RAID1, the minimum recovery I/O load in kiB/sec/disk."}, + {Field: "raid_mismatch_count", Value: -1, Help: "Mismatches - For RAID, number of mismatches found or repaired."}, + {Field: "raid_sync_action", Value: -1, Help: "SyncAction - For RAID, the current synchronization action being performed. -1: undefined, 0: idle, 1: frozen, 2: resync, 3: recover, 4: check, 5: repair"}, + {Field: "raid_write_behind", Value: -1, Help: "WBehind - For RAID1, the number of outstanding writes allowed to writemostly devices."}, + {Field: "seg_count", Value: 1, Help: "#Seg - Number of segments in LV."}, + {Field: "snap_count", Value: 0, Help: "#SN - Number of snapshots."}, + {Field: "snap_percent", Value: -1, Help: "Snap% - For snapshots, the percentage full if LV is active."}, + {Field: "sync_percent", Value: -1, Help: "Cpy%Sync - For Cache, RAID, mirrors and pvmove, current percentage in-sync."}, + {Field: "vdo_saving_percent", Value: -1, Help: "VDOSaving% - For vdo pools, percentage of saved space."}, + {Field: "vdo_used_size", Value: -1, Help: "VDOUsedSize - For vdo pools, currently used space."}, + {Field: "vg_allocation_policy", Value: 0, Help: "AllocPol - VG allocation policy. -1: undefined, 0: normal, 1: contiguous, 2: cling, 3: anywhere, 4: inherited"}, + {Field: "vg_clustered", Value: 0, Help: "Clustered - Set if VG is clustered."}, + {Field: "vg_exported", Value: 0, Help: "Exported - Set if VG is exported."}, + {Field: "vg_extendable", Value: 1, Help: "Extendable - Set if VG is extendable."}, + {Field: "vg_extent_count", Value: 5118, Help: "#Ext - Total number of Physical Extents."}, + {Field: "vg_extent_size", Value: 4.194304e+06, Help: "Ext - Size of Physical Extents in current units."}, + {Field: "vg_free", Value: 1.3941866496e+10, Help: "VFree - Total amount of free space in current units."}, + {Field: "vg_free_count", Value: 3324, Help: "Free - Total number of unallocated Physical Extents."}, + {Field: "vg_mda_copies", Value: -1, Help: "#VMdaCps - Target number of in use metadata areas in the VG."}, + {Field: "vg_mda_count", Value: 2, Help: "#VMda - Number of metadata areas on this VG."}, + {Field: "vg_mda_free", Value: 518656, Help: "VMdaFree - Free metadata area space for this VG in current units."}, + {Field: "vg_mda_size", Value: 1.04448e+06, Help: "VMdaSize - Size of smallest metadata area for this VG in current units."}, + {Field: "vg_mda_used_count", Value: 2, Help: "#VMdaUse - Number of metadata areas in use on this VG."}, + {Field: "vg_missing_pv_count", Value: 0, Help: "#PV Missing - Number of PVs in VG which are missing."}, + {Field: "vg_partial", Value: 0, Help: "Partial - Set if VG is partial."}, + {Field: "vg_permissions", Value: 0, Help: "VPerms - VG permissions. -1: undefined, 0: writeable, 1: read-only"}, + {Field: "vg_seqno", Value: 32, Help: "Seq - Revision number of internal metadata. Incremented whenever it changes."}, + {Field: "vg_shared", Value: 0, Help: "Shared - Set if VG is shared."}, + {Field: "vg_size", Value: 2.1466447872e+10, Help: "VSize - Total size of VG in current units."}, + }, + Labels: []Label{ + {Field: "lv_host", Value: "LVM-TEST"}, + {Field: "lv_layout", Value: "linear"}, + {Field: "lv_name", Value: "lvol0"}, + {Field: "lv_uuid", Value: "i30Cyh-D0cc-Rnll-EqHY-WawI-12P0-1tZ4XJ"}, + {Field: "vg_name", Value: "vgdata"}, + {Field: "vg_uuid", Value: "GlVa5G-kmsv-G0Hu-fN1W-2p3B-Lh2f-7MY7K4"}, + }, + }, + }, + wantErr: false, + }, + { + name: "vg all fields", + args: args{ + b: []byte(`{ + "report": [ + { + "vg": [ + {"vg_fmt":"lvm2", "vg_uuid":"GlVa5G-kmsv-G0Hu-fN1W-2p3B-Lh2f-7MY7K4", "vg_name":"vgdata", "vg_attr":"wz--n-", "vg_permissions":"writeable", "vg_extendable":"1", "vg_exported":"0", "vg_partial":"0", "vg_allocation_policy":"normal", "vg_clustered":"0", "vg_shared":"0", "vg_size":"21466447872B", "vg_free":"13941866496B", "vg_sysid":"", "vg_systemid":"", "vg_lock_type":"", "vg_lock_args":"", "vg_extent_size":"4194304B", "vg_extent_count":"5118", "vg_free_count":"3324", "max_lv":"0", "max_pv":"0", "pv_count":"2", "vg_missing_pv_count":"0", "lv_count":"2", "snap_count":"0", "vg_seqno":"32", "vg_tags":"", "vg_profile":"", "vg_mda_count":"2", "vg_mda_used_count":"2", "vg_mda_free":"518656B", "vg_mda_size":"1044480B", "vg_mda_copies":"unmanaged"} + ] + } + ] + }`), + }, + want: []MetricsLabels{ + { + Namespace: "vg", + Metrics: []Metric{ + {Field: "lv_count", Value: 2, Help: "#LV - Number of LVs."}, + {Field: "max_lv", Value: 0, Help: "MaxLV - Maximum number of LVs allowed in VG or 0 if unlimited."}, + {Field: "max_pv", Value: 0, Help: "MaxPV - Maximum number of PVs allowed in VG or 0 if unlimited."}, + {Field: "pv_count", Value: 2, Help: "#PV - Number of PVs in VG."}, + {Field: "snap_count", Value: 0, Help: "#SN - Number of snapshots."}, + {Field: "vg_allocation_policy", Value: 0, Help: "AllocPol - VG allocation policy. -1: undefined, 0: normal, 1: contiguous, 2: cling, 3: anywhere, 4: inherited"}, + {Field: "vg_clustered", Value: 0, Help: "Clustered - Set if VG is clustered."}, + {Field: "vg_exported", Value: 0, Help: "Exported - Set if VG is exported."}, + {Field: "vg_extendable", Value: 1, Help: "Extendable - Set if VG is extendable."}, + {Field: "vg_extent_count", Value: 5118, Help: "#Ext - Total number of Physical Extents."}, + {Field: "vg_extent_size", Value: 4194304, Help: "Ext - Size of Physical Extents in current units."}, + {Field: "vg_free", Value: 13941866496, Help: "VFree - Total amount of free space in current units."}, + {Field: "vg_free_count", Value: 3324, Help: "Free - Total number of unallocated Physical Extents."}, + {Field: "vg_mda_copies", Value: -1, Help: "#VMdaCps - Target number of in use metadata areas in the VG."}, + {Field: "vg_mda_count", Value: 2, Help: "#VMda - Number of metadata areas on this VG."}, + {Field: "vg_mda_free", Value: 518656, Help: "VMdaFree - Free metadata area space for this VG in current units."}, + {Field: "vg_mda_size", Value: 1044480, Help: "VMdaSize - Size of smallest metadata area for this VG in current units."}, + {Field: "vg_mda_used_count", Value: 2, Help: "#VMdaUse - Number of metadata areas in use on this VG."}, + {Field: "vg_missing_pv_count", Value: 0, Help: "#PV Missing - Number of PVs in VG which are missing."}, + {Field: "vg_partial", Value: 0, Help: "Partial - Set if VG is partial."}, + {Field: "vg_permissions", Value: 0, Help: "VPerms - VG permissions. -1: undefined, 0: writeable, 1: read-only"}, + {Field: "vg_seqno", Value: 32, Help: "Seq - Revision number of internal metadata. Incremented whenever it changes."}, + {Field: "vg_shared", Value: 0, Help: "Shared - Set if VG is shared."}, + {Field: "vg_size", Value: 21466447872, Help: "VSize - Total size of VG in current units."}, + }, + Labels: []Label{ + {Field: "vg_name", Value: "vgdata"}, + {Field: "vg_uuid", Value: "GlVa5G-kmsv-G0Hu-fN1W-2p3B-Lh2f-7MY7K4"}, + }, + }, + }, + wantErr: false, + }, + { + name: "pv all fields", + args: args{ + b: []byte(`{ + "report": [ + { + "pv": [ + {"pv_fmt":"lvm2", "pv_uuid":"3SiVuY-idTg-118r-p3cc-hOYp-0qKE-6lS0Fq", "dev_size":"10737418240B", "pv_name":"/dev/sdb", "pv_major":"8", "pv_minor":"16", "pv_mda_free":"518656B", "pv_mda_size":"1044480B", "pv_ext_vsn":"2", "pe_start":"1048576B", "pv_size":"10733223936B", "pv_free":"7507804160B", "pv_used":"3225419776B", "pv_attr":"a--", "pv_allocatable":"1", "pv_exported":"0", "pv_missing":"0", "pv_pe_count":"2559", "pv_pe_alloc_count":"769", "pv_tags":"", "pv_mda_count":"1", "pv_mda_used_count":"1", "pv_ba_start":"0B", "pv_ba_size":"0B", "pv_in_use":"1", "pv_duplicate":"0"}, + {"pv_fmt":"lvm2", "pv_uuid":"PTjDUr-PO0k-kqFA-99Nc-qqsM-bBe0-tHxm5q", "dev_size":"10737418240B", "pv_name":"/dev/sdc", "pv_major":"8", "pv_minor":"32", "pv_mda_free":"518656B", "pv_mda_size":"1044480B", "pv_ext_vsn":"2", "pe_start":"1048576B", "pv_size":"10733223936B", "pv_free":"6434062336B", "pv_used":"3225419776B", "pv_attr":"a--", "pv_allocatable":"1", "pv_exported":"0", "pv_missing":"0", "pv_pe_count":"2559", "pv_pe_alloc_count":"1025", "pv_tags":"", "pv_mda_count":"1", "pv_mda_used_count":"1", "pv_ba_start":"0B", "pv_ba_size":"0B", "pv_in_use":"1", "pv_duplicate":"0"} + ] + } + ] + }`), + }, + want: []MetricsLabels{ + { + Namespace: "pv", + Metrics: []Metric{ + {Field: "dev_size", Value: 10737418240, Help: "DevSize - Size of underlying device in current units."}, + {Field: "pe_start", Value: 1048576, Help: "1st PE - Offset to the start of data on the underlying device."}, + {Field: "pv_allocatable", Value: 1, Help: "Allocatable - Set if this device can be used for allocation."}, + {Field: "pv_ba_size", Value: 0, Help: "BA Size - Size of PV Bootloader Area in current units."}, + {Field: "pv_ba_start", Value: 0, Help: "BA Start - Offset to the start of PV Bootloader Area on the underlying device in current units."}, + {Field: "pv_duplicate", Value: 0, Help: "Duplicate - Set if PV is an unchosen duplicate."}, + {Field: "pv_exported", Value: 0, Help: "Exported - Set if this device is exported."}, + {Field: "pv_ext_vsn", Value: 2, Help: "PExtVsn - PV header extension version."}, + {Field: "pv_free", Value: 7507804160, Help: "PFree - Total amount of unallocated space in current units."}, + {Field: "pv_in_use", Value: 1, Help: "PInUse - Set if PV is used."}, + {Field: "pv_mda_count", Value: 1, Help: "#PMda - Number of metadata areas on this device."}, + {Field: "pv_mda_free", Value: 518656, Help: "PMdaFree - Free metadata area space on this device in current units."}, + {Field: "pv_mda_size", Value: 1044480, Help: "PMdaSize - Size of smallest metadata area on this device in current units."}, + {Field: "pv_mda_used_count", Value: 1, Help: "#PMdaUse - Number of metadata areas in use on this device."}, + {Field: "pv_missing", Value: 0, Help: "Missing - Set if this device is missing in system."}, + {Field: "pv_pe_alloc_count", Value: 769, Help: "Alloc - Total number of allocated Physical Extents."}, + {Field: "pv_pe_count", Value: 2559, Help: "PE - Total number of Physical Extents."}, + {Field: "pv_size", Value: 10733223936, Help: "PSize - Size of PV in current units."}, + {Field: "pv_used", Value: 3225419776, Help: "Used - Total amount of allocated space in current units."}, + }, + Labels: []Label{ + {Field: "pv_name", Value: "/dev/sdb"}, + {Field: "pv_uuid", Value: "3SiVuY-idTg-118r-p3cc-hOYp-0qKE-6lS0Fq"}, + }, + }, + { + Namespace: "pv", + Metrics: []Metric{ + {Field: "dev_size", Value: 10737418240, Help: "DevSize - Size of underlying device in current units."}, + {Field: "pe_start", Value: 1048576, Help: "1st PE - Offset to the start of data on the underlying device."}, + {Field: "pv_allocatable", Value: 1, Help: "Allocatable - Set if this device can be used for allocation."}, + {Field: "pv_ba_size", Value: 0, Help: "BA Size - Size of PV Bootloader Area in current units."}, + {Field: "pv_ba_start", Value: 0, Help: "BA Start - Offset to the start of PV Bootloader Area on the underlying device in current units."}, + {Field: "pv_duplicate", Value: 0, Help: "Duplicate - Set if PV is an unchosen duplicate."}, + {Field: "pv_exported", Value: 0, Help: "Exported - Set if this device is exported."}, + {Field: "pv_ext_vsn", Value: 2, Help: "PExtVsn - PV header extension version."}, + {Field: "pv_free", Value: 6434062336, Help: "PFree - Total amount of unallocated space in current units."}, + {Field: "pv_in_use", Value: 1, Help: "PInUse - Set if PV is used."}, + {Field: "pv_mda_count", Value: 1, Help: "#PMda - Number of metadata areas on this device."}, + {Field: "pv_mda_free", Value: 518656, Help: "PMdaFree - Free metadata area space on this device in current units."}, + {Field: "pv_mda_size", Value: 1044480, Help: "PMdaSize - Size of smallest metadata area on this device in current units."}, + {Field: "pv_mda_used_count", Value: 1, Help: "#PMdaUse - Number of metadata areas in use on this device."}, + {Field: "pv_missing", Value: 0, Help: "Missing - Set if this device is missing in system."}, + {Field: "pv_pe_alloc_count", Value: 1025, Help: "Alloc - Total number of allocated Physical Extents."}, + {Field: "pv_pe_count", Value: 2559, Help: "PE - Total number of Physical Extents."}, + {Field: "pv_size", Value: 10733223936, Help: "PSize - Size of PV in current units."}, + {Field: "pv_used", Value: 3225419776, Help: "Used - Total amount of allocated space in current units."}, + }, + Labels: []Label{ + {Field: "pv_name", Value: "/dev/sdc"}, + {Field: "pv_uuid", Value: "PTjDUr-PO0k-kqFA-99Nc-qqsM-bBe0-tHxm5q"}, + }, + }, + }, + wantErr: false, + }, + } + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + got, err := ReportsToMetrics(tt.args.b) + require.NoError(t, err) + require.Equal(t, tt.want, got) + }) + } +} diff --git a/generator/fields_generator.go b/generator/fields_generator.go new file mode 100644 index 0000000..eda8e4a --- /dev/null +++ b/generator/fields_generator.go @@ -0,0 +1,203 @@ +package main + +import ( + "bufio" + "bytes" + "flag" + "fmt" + "io/ioutil" + "log" + "net/http" + "sort" + "strings" +) + +const ( + valuesFile = "https://sourceware.org/git/?p=lvm2.git;a=blob_plain;f=lib/report/values.h;hb=HEAD" + columnsFile = "https://sourceware.org/git/?p=lvm2.git;a=blob_plain;f=lib/report/columns.h;hb=HEAD" +) + +func main() { + pkgName := flag.String("pkg", "collector", "package name") + output := flag.String("o", "", "output") + flag.Parse() + + err := run(*pkgName, *output) + if err != nil { + log.Fatal(err) + } +} + +func run(pkgName, output string) error { + values, columns, err := downloadFiles() + if err != nil { + return err + } + + fields, err := parseFields(columns) + if err != nil { + return err + } + + enums, err := parseEnums(values) + if err != nil { + return err + } + var enumsKey []string + for key := range enums { + enumsKey = append(enumsKey, key) + } + sort.Strings(enumsKey) + + var w bytes.Buffer + + fmt.Fprintf(&w, "// Code generated by fields_generator.go. DO NOT EDIT.\n") + fmt.Fprintf(&w, "package %s\n", pkgName) + + fmt.Fprintf(&w, ` +type FieldType string + +const ( + FieldTypeSTR FieldType = "STR" + FieldTypeNUM FieldType = "NUM" + FieldTypeBIN FieldType = "BIN" + FieldTypeSIZ FieldType = "SIZ" + FieldTypePCT FieldType = "PCT" + FieldTypeTIM FieldType = "TIM" + FieldTypeSNUM FieldType = "SNUM" + FieldTypeSTR_LIST FieldType = "STR_LIST" +) + +type Field struct { + Type FieldType + Name string + Description string +} + +`) + fmt.Fprintf(&w, "var lvmFields = map[string]Field{\n") + for _, field := range fields { + fmt.Fprintf(&w, ` "%s": Field{ + Type: FieldType%s, + Name: "%s", + Description: "%s", + }, +`, + field.ID, + field.Type, + field.Name, + field.Description, + ) + } + + fmt.Fprintf(&w, "}\n\n") + + // + + fmt.Fprintf(&w, "var lvmEnums = map[string][]string{\n") + for _, key := range enumsKey { + fmt.Fprintf(&w, ` "%s": []string{`, key) + for i, v := range enums[key] { + fmt.Fprintf(&w, `"%s"`, v) + if i != len(enums[key])-1 { + fmt.Fprint(&w, `, `) + } + } + fmt.Fprintf(&w, "},\n") + } + fmt.Fprintf(&w, "}\n\n") + + // + + if output == "" { + fmt.Println(w.String()) + return nil + } + return ioutil.WriteFile(output, w.Bytes(), 0644) +} + +type Enum map[string][]string + +func parseEnums(b []byte) (Enum, error) { + enums := make(Enum) + s := bufio.NewScanner(bytes.NewReader(b)) + for s.Scan() { + line := s.Text() + if !strings.HasPrefix(line, "FIELD_RESERVED_VALUE(NAMED, ") { + continue + } + line = strings.TrimSuffix(strings.TrimPrefix(line, "FIELD_RESERVED_VALUE(NAMED, "), ")") + split := strings.Split(line, ", ") + + enums[strings.TrimSpace(split[0])] = append(enums[strings.TrimSpace(split[0])], strings.Trim(strings.TrimSpace(split[3]), `"`)) + } + err := s.Err() + if err != nil { + return nil, fmt.Errorf("scan: %w", err) + } + + return enums, nil +} + +type Field struct { + Type string + ID string + Name string + Description string +} + +func parseFields(b []byte) ([]Field, error) { + var fields []Field + s := bufio.NewScanner(bytes.NewReader(b)) + for s.Scan() { + line := s.Text() + if !strings.HasPrefix(line, "FIELD(") { + continue + } + line = strings.TrimSuffix(strings.TrimPrefix(line, "FIELD("), ")") + split := strings.SplitN(line, ", ", 9) + + fields = append(fields, Field{ + Type: strings.TrimSpace(split[2]), + ID: strings.TrimSpace(split[7]), + Name: strings.Trim(strings.TrimSpace(split[3]), `"`), + Description: strings.Trim(strings.TrimSpace(strings.Split(split[8], `",`)[0]), `"`), + }) + } + err := s.Err() + if err != nil { + return nil, fmt.Errorf("scan: %w", err) + } + + return fields, nil +} + +func downloadFiles() (values, columns []byte, err error) { + { + respV, err := http.Get(valuesFile) + if err != nil { + return nil, nil, fmt.Errorf("values: %w", err) + } + defer respV.Body.Close() + + values, err = ioutil.ReadAll(respV.Body) + if err != nil { + return nil, nil, err + } + } + + { + respC, err := http.Get(columnsFile) + if err != nil { + return nil, nil, fmt.Errorf("columns: %w", err) + } + defer respC.Body.Close() + + columns, err = ioutil.ReadAll(respC.Body) + if err != nil { + return nil, nil, err + } + } + + return values, columns, nil +} diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..edcb11e --- /dev/null +++ b/go.mod @@ -0,0 +1,19 @@ +module github.com/ghostiam/lvm_exporter + +go 1.15 + +require ( + github.com/go-kit/kit v0.10.0 + github.com/google/go-cmp v0.5.1 // indirect + github.com/prometheus/client_golang v1.7.1 + github.com/prometheus/common v0.14.0 + github.com/prometheus/procfs v0.2.0 // indirect + github.com/prometheus/promu v0.6.1 // indirect + github.com/stretchr/testify v1.4.0 + golang.org/x/net v0.0.0-20201006153459-a7d1128ccaa0 // indirect + golang.org/x/oauth2 v0.0.0-20200902213428-5d25da1a8d43 // indirect + golang.org/x/sys v0.0.0-20201007082116-8445cc04cbdf // indirect + golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect + google.golang.org/protobuf v1.25.0 // indirect + gopkg.in/alecthomas/kingpin.v2 v2.2.6 +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..c084f68 --- /dev/null +++ b/go.sum @@ -0,0 +1,681 @@ +cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU= +cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU= +cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY= +cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc= +cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0= +cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To= +cloud.google.com/go v0.52.0/go.mod h1:pXajvRH/6o3+F9jDHZWQ5PbGhn+o8w9qiu/CffaVdO4= +cloud.google.com/go v0.53.0/go.mod h1:fp/UouUEsRkN6ryDKNW/Upv/JBKnv6WDthjR6+vze6M= 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v0.0.0-20190731080439-ebfcffb1b5c0/go.mod h1:hI742Nqp5OhwiqlzhgfbWU4mW4yO10fP+LoT9WOswdU= diff --git a/lvm_exporter.go b/lvm_exporter.go new file mode 100644 index 0000000..672e055 --- /dev/null +++ b/lvm_exporter.go @@ -0,0 +1,86 @@ +package main + +import ( + "net/http" + "os" + + "github.com/go-kit/kit/log/level" + "github.com/prometheus/client_golang/prometheus" + "github.com/prometheus/client_golang/prometheus/promhttp" + "github.com/prometheus/common/promlog" + "github.com/prometheus/common/promlog/flag" + "gopkg.in/alecthomas/kingpin.v2" + + "github.com/prometheus/common/version" + + "github.com/ghostiam/lvm_exporter/collector" +) + +func main() { + var ( + listenAddress = kingpin.Flag( + "web.listen-address", + "Address on which to expose metrics and web interface.", + ).Default(":9169").String() + metricsPath = kingpin.Flag( + "web.telemetry-path", + "Path under which to expose metrics.", + ).Default("/metrics").String() + disableExporterMetrics = kingpin.Flag( + "web.disable-exporter-metrics", + "Exclude metrics about the exporter itself (promhttp_*, process_*, go_*).", + ).Bool() + configFile = kingpin.Flag( + "config.filename", + "LVM Exporter configuration file name.", + ).Envar("CONFIG").Default("").String() + ) + + promlogConfig := &promlog.Config{} + flag.AddFlags(kingpin.CommandLine, promlogConfig) + kingpin.Version(version.Print("lvm_exporter")) + kingpin.HelpFlag.Short('h') + kingpin.Parse() + + logger := promlog.New(promlogConfig) + level.Info(logger).Log("msg", "Starting lvm_exporter", "version", version.Info()) + level.Info(logger).Log("msg", "Build context", "build_context", version.BuildContext()) + + registry := prometheus.NewRegistry() + + if !*disableExporterMetrics { + registry.MustRegister( + prometheus.NewProcessCollector(prometheus.ProcessCollectorOpts{}), + prometheus.NewGoCollector(), + ) + } + registry.MustRegister(version.NewCollector("lvm_exporter")) + + _ = configFile // TODO + exporter, err := collector.New(nil, logger) + if err != nil { + level.Error(logger).Log("msg", "Error starting HTTP server:", "err", err) + os.Exit(1) + return + } + + registry.MustRegister(exporter) + + http.Handle(*metricsPath, promhttp.HandlerFor(registry, promhttp.HandlerOpts{})) + http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) { + _, _ = w.Write([]byte(` + LVM Exporter + +

LVM Exporter

+

Metrics

+ + + `)) + }) + + level.Info(logger).Log("msg", "Listening on", "address", *listenAddress) + if err := http.ListenAndServe(*listenAddress, nil); err != nil { + level.Error(logger).Log("msg", "Error starting HTTP server:", "err", err) + os.Exit(1) + } +} diff --git a/scripts/errcheck_excludes.txt b/scripts/errcheck_excludes.txt new file mode 100644 index 0000000..ad914f4 --- /dev/null +++ b/scripts/errcheck_excludes.txt @@ -0,0 +1,4 @@ +// Used in HTTP handlers, any error is handled by the server itself. +(net/http.ResponseWriter).Write +// Never check for logger errors. +(github.com/go-kit/kit/log.Logger).Log