[VOL-3255] enhancement to support device metrics
Change-Id: Ic26c2db30a58943a4eef6276ae1cf40350d51702
diff --git a/vendor/github.com/prometheus/procfs/.gitignore b/vendor/github.com/prometheus/procfs/.gitignore
new file mode 100644
index 0000000..25e3659
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/.gitignore
@@ -0,0 +1 @@
+/fixtures/
diff --git a/vendor/github.com/prometheus/procfs/.golangci.yml b/vendor/github.com/prometheus/procfs/.golangci.yml
new file mode 100644
index 0000000..438ca92
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/.golangci.yml
@@ -0,0 +1,6 @@
+# Run only staticcheck for now. Additional linters will be enabled one-by-one.
+linters:
+ enable:
+ - staticcheck
+ - govet
+ disable-all: true
diff --git a/vendor/github.com/prometheus/procfs/CONTRIBUTING.md b/vendor/github.com/prometheus/procfs/CONTRIBUTING.md
new file mode 100644
index 0000000..40503ed
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/CONTRIBUTING.md
@@ -0,0 +1,18 @@
+# Contributing
+
+Prometheus uses GitHub to manage reviews of pull requests.
+
+* If you have a trivial fix or improvement, go ahead and create a pull request,
+ addressing (with `@...`) the maintainer of this repository (see
+ [MAINTAINERS.md](MAINTAINERS.md)) in the description of the pull request.
+
+* If you plan to do something more involved, first discuss your ideas
+ on our [mailing list](https://groups.google.com/forum/?fromgroups#!forum/prometheus-developers).
+ This will avoid unnecessary work and surely give you and us a good deal
+ of inspiration.
+
+* Relevant coding style guidelines are the [Go Code Review
+ Comments](https://code.google.com/p/go-wiki/wiki/CodeReviewComments)
+ and the _Formatting and style_ section of Peter Bourgon's [Go: Best
+ Practices for Production
+ Environments](http://peter.bourgon.org/go-in-production/#formatting-and-style).
diff --git a/vendor/github.com/prometheus/procfs/LICENSE b/vendor/github.com/prometheus/procfs/LICENSE
new file mode 100644
index 0000000..261eeb9
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/LICENSE
@@ -0,0 +1,201 @@
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
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+ Unless required by applicable law or agreed to in writing, software
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diff --git a/vendor/github.com/prometheus/procfs/MAINTAINERS.md b/vendor/github.com/prometheus/procfs/MAINTAINERS.md
new file mode 100644
index 0000000..56ba67d
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/MAINTAINERS.md
@@ -0,0 +1,2 @@
+* Johannes 'fish' Ziemke <github@freigeist.org> @discordianfish
+* Paul Gier <pgier@redhat.com> @pgier
diff --git a/vendor/github.com/prometheus/procfs/Makefile b/vendor/github.com/prometheus/procfs/Makefile
new file mode 100644
index 0000000..616a0d2
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/Makefile
@@ -0,0 +1,29 @@
+# Copyright 2018 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.
+
+include Makefile.common
+
+%/.unpacked: %.ttar
+ @echo ">> extracting fixtures"
+ ./ttar -C $(dir $*) -x -f $*.ttar
+ touch $@
+
+update_fixtures:
+ rm -vf fixtures/.unpacked
+ ./ttar -c -f fixtures.ttar fixtures/
+
+.PHONY: build
+build:
+
+.PHONY: test
+test: fixtures/.unpacked common-test
diff --git a/vendor/github.com/prometheus/procfs/Makefile.common b/vendor/github.com/prometheus/procfs/Makefile.common
new file mode 100644
index 0000000..d7aea1b
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/Makefile.common
@@ -0,0 +1,275 @@
+# Copyright 2018 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.
+
+
+# A common Makefile that includes rules to be reused in different prometheus projects.
+# !!! Open PRs only against the prometheus/prometheus/Makefile.common repository!
+
+# Example usage :
+# Create the main Makefile in the root project directory.
+# include Makefile.common
+# customTarget:
+# @echo ">> Running customTarget"
+#
+
+# Ensure GOBIN is not set during build so that promu is installed to the correct path
+unexport GOBIN
+
+GO ?= go
+GOFMT ?= $(GO)fmt
+FIRST_GOPATH := $(firstword $(subst :, ,$(shell $(GO) env GOPATH)))
+GOOPTS ?=
+GOHOSTOS ?= $(shell $(GO) env GOHOSTOS)
+GOHOSTARCH ?= $(shell $(GO) env GOHOSTARCH)
+
+GO_VERSION ?= $(shell $(GO) version)
+GO_VERSION_NUMBER ?= $(word 3, $(GO_VERSION))
+PRE_GO_111 ?= $(shell echo $(GO_VERSION_NUMBER) | grep -E 'go1\.(10|[0-9])\.')
+
+GOVENDOR :=
+GO111MODULE :=
+ifeq (, $(PRE_GO_111))
+ ifneq (,$(wildcard go.mod))
+ # Enforce Go modules support just in case the directory is inside GOPATH (and for Travis CI).
+ GO111MODULE := on
+
+ ifneq (,$(wildcard vendor))
+ # Always use the local vendor/ directory to satisfy the dependencies.
+ GOOPTS := $(GOOPTS) -mod=vendor
+ endif
+ endif
+else
+ ifneq (,$(wildcard go.mod))
+ ifneq (,$(wildcard vendor))
+$(warning This repository requires Go >= 1.11 because of Go modules)
+$(warning Some recipes may not work as expected as the current Go runtime is '$(GO_VERSION_NUMBER)')
+ endif
+ else
+ # This repository isn't using Go modules (yet).
+ GOVENDOR := $(FIRST_GOPATH)/bin/govendor
+ endif
+endif
+PROMU := $(FIRST_GOPATH)/bin/promu
+pkgs = ./...
+
+ifeq (arm, $(GOHOSTARCH))
+ GOHOSTARM ?= $(shell GOARM= $(GO) env GOARM)
+ GO_BUILD_PLATFORM ?= $(GOHOSTOS)-$(GOHOSTARCH)v$(GOHOSTARM)
+else
+ GO_BUILD_PLATFORM ?= $(GOHOSTOS)-$(GOHOSTARCH)
+endif
+
+PROMU_VERSION ?= 0.4.0
+PROMU_URL := https://github.com/prometheus/promu/releases/download/v$(PROMU_VERSION)/promu-$(PROMU_VERSION).$(GO_BUILD_PLATFORM).tar.gz
+
+GOLANGCI_LINT :=
+GOLANGCI_LINT_OPTS ?=
+GOLANGCI_LINT_VERSION ?= v1.16.0
+# golangci-lint only supports linux, darwin and windows platforms on i386/amd64.
+# windows isn't included here because of the path separator being different.
+ifeq ($(GOHOSTOS),$(filter $(GOHOSTOS),linux darwin))
+ ifeq ($(GOHOSTARCH),$(filter $(GOHOSTARCH),amd64 i386))
+ GOLANGCI_LINT := $(FIRST_GOPATH)/bin/golangci-lint
+ endif
+endif
+
+PREFIX ?= $(shell pwd)
+BIN_DIR ?= $(shell pwd)
+DOCKER_IMAGE_TAG ?= $(subst /,-,$(shell git rev-parse --abbrev-ref HEAD))
+DOCKERFILE_PATH ?= ./
+DOCKER_REPO ?= prom
+
+DOCKER_ARCHS ?= amd64
+
+BUILD_DOCKER_ARCHS = $(addprefix common-docker-,$(DOCKER_ARCHS))
+PUBLISH_DOCKER_ARCHS = $(addprefix common-docker-publish-,$(DOCKER_ARCHS))
+TAG_DOCKER_ARCHS = $(addprefix common-docker-tag-latest-,$(DOCKER_ARCHS))
+
+ifeq ($(GOHOSTARCH),amd64)
+ ifeq ($(GOHOSTOS),$(filter $(GOHOSTOS),linux freebsd darwin windows))
+ # Only supported on amd64
+ test-flags := -race
+ endif
+endif
+
+# This rule is used to forward a target like "build" to "common-build". This
+# allows a new "build" target to be defined in a Makefile which includes this
+# one and override "common-build" without override warnings.
+%: common-% ;
+
+.PHONY: common-all
+common-all: precheck style check_license lint unused build test
+
+.PHONY: common-style
+common-style:
+ @echo ">> checking code style"
+ @fmtRes=$$($(GOFMT) -d $$(find . -path ./vendor -prune -o -name '*.go' -print)); \
+ if [ -n "$${fmtRes}" ]; then \
+ echo "gofmt checking failed!"; echo "$${fmtRes}"; echo; \
+ echo "Please ensure you are using $$($(GO) version) for formatting code."; \
+ exit 1; \
+ fi
+
+.PHONY: common-check_license
+common-check_license:
+ @echo ">> checking license header"
+ @licRes=$$(for file in $$(find . -type f -iname '*.go' ! -path './vendor/*') ; do \
+ awk 'NR<=3' $$file | grep -Eq "(Copyright|generated|GENERATED)" || echo $$file; \
+ done); \
+ if [ -n "$${licRes}" ]; then \
+ echo "license header checking failed:"; echo "$${licRes}"; \
+ exit 1; \
+ fi
+
+.PHONY: common-deps
+common-deps:
+ @echo ">> getting dependencies"
+ifdef GO111MODULE
+ GO111MODULE=$(GO111MODULE) $(GO) mod download
+else
+ $(GO) get $(GOOPTS) -t ./...
+endif
+
+.PHONY: common-test-short
+common-test-short:
+ @echo ">> running short tests"
+ GO111MODULE=$(GO111MODULE) $(GO) test -short $(GOOPTS) $(pkgs)
+
+.PHONY: common-test
+common-test:
+ @echo ">> running all tests"
+ GO111MODULE=$(GO111MODULE) $(GO) test $(test-flags) $(GOOPTS) $(pkgs)
+
+.PHONY: common-format
+common-format:
+ @echo ">> formatting code"
+ GO111MODULE=$(GO111MODULE) $(GO) fmt $(pkgs)
+
+.PHONY: common-vet
+common-vet:
+ @echo ">> vetting code"
+ GO111MODULE=$(GO111MODULE) $(GO) vet $(GOOPTS) $(pkgs)
+
+.PHONY: common-lint
+common-lint: $(GOLANGCI_LINT)
+ifdef GOLANGCI_LINT
+ @echo ">> running golangci-lint"
+ifdef GO111MODULE
+# 'go list' needs to be executed before staticcheck to prepopulate the modules cache.
+# Otherwise staticcheck might fail randomly for some reason not yet explained.
+ GO111MODULE=$(GO111MODULE) $(GO) list -e -compiled -test=true -export=false -deps=true -find=false -tags= -- ./... > /dev/null
+ GO111MODULE=$(GO111MODULE) $(GOLANGCI_LINT) run $(GOLANGCI_LINT_OPTS) $(pkgs)
+else
+ $(GOLANGCI_LINT) run $(pkgs)
+endif
+endif
+
+# For backward-compatibility.
+.PHONY: common-staticcheck
+common-staticcheck: lint
+
+.PHONY: common-unused
+common-unused: $(GOVENDOR)
+ifdef GOVENDOR
+ @echo ">> running check for unused packages"
+ @$(GOVENDOR) list +unused | grep . && exit 1 || echo 'No unused packages'
+else
+ifdef GO111MODULE
+ @echo ">> running check for unused/missing packages in go.mod"
+ GO111MODULE=$(GO111MODULE) $(GO) mod tidy
+ifeq (,$(wildcard vendor))
+ @git diff --exit-code -- go.sum go.mod
+else
+ @echo ">> running check for unused packages in vendor/"
+ GO111MODULE=$(GO111MODULE) $(GO) mod vendor
+ @git diff --exit-code -- go.sum go.mod vendor/
+endif
+endif
+endif
+
+.PHONY: common-build
+common-build: promu
+ @echo ">> building binaries"
+ GO111MODULE=$(GO111MODULE) $(PROMU) build --prefix $(PREFIX)
+
+.PHONY: common-tarball
+common-tarball: promu
+ @echo ">> building release tarball"
+ $(PROMU) tarball --prefix $(PREFIX) $(BIN_DIR)
+
+.PHONY: common-docker $(BUILD_DOCKER_ARCHS)
+common-docker: $(BUILD_DOCKER_ARCHS)
+$(BUILD_DOCKER_ARCHS): common-docker-%:
+ docker build -t "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$*:$(DOCKER_IMAGE_TAG)" \
+ --build-arg ARCH="$*" \
+ --build-arg OS="linux" \
+ $(DOCKERFILE_PATH)
+
+.PHONY: common-docker-publish $(PUBLISH_DOCKER_ARCHS)
+common-docker-publish: $(PUBLISH_DOCKER_ARCHS)
+$(PUBLISH_DOCKER_ARCHS): common-docker-publish-%:
+ docker push "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$*:$(DOCKER_IMAGE_TAG)"
+
+.PHONY: common-docker-tag-latest $(TAG_DOCKER_ARCHS)
+common-docker-tag-latest: $(TAG_DOCKER_ARCHS)
+$(TAG_DOCKER_ARCHS): common-docker-tag-latest-%:
+ docker tag "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$*:$(DOCKER_IMAGE_TAG)" "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$*:latest"
+
+.PHONY: common-docker-manifest
+common-docker-manifest:
+ DOCKER_CLI_EXPERIMENTAL=enabled docker manifest create -a "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME):$(DOCKER_IMAGE_TAG)" $(foreach ARCH,$(DOCKER_ARCHS),$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$(ARCH):$(DOCKER_IMAGE_TAG))
+ DOCKER_CLI_EXPERIMENTAL=enabled docker manifest push "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME):$(DOCKER_IMAGE_TAG)"
+
+.PHONY: promu
+promu: $(PROMU)
+
+$(PROMU):
+ $(eval PROMU_TMP := $(shell mktemp -d))
+ curl -s -L $(PROMU_URL) | tar -xvzf - -C $(PROMU_TMP)
+ mkdir -p $(FIRST_GOPATH)/bin
+ cp $(PROMU_TMP)/promu-$(PROMU_VERSION).$(GO_BUILD_PLATFORM)/promu $(FIRST_GOPATH)/bin/promu
+ rm -r $(PROMU_TMP)
+
+.PHONY: proto
+proto:
+ @echo ">> generating code from proto files"
+ @./scripts/genproto.sh
+
+ifdef GOLANGCI_LINT
+$(GOLANGCI_LINT):
+ mkdir -p $(FIRST_GOPATH)/bin
+ curl -sfL https://raw.githubusercontent.com/golangci/golangci-lint/$(GOLANGCI_LINT_VERSION)/install.sh \
+ | sed -e '/install -d/d' \
+ | sh -s -- -b $(FIRST_GOPATH)/bin $(GOLANGCI_LINT_VERSION)
+endif
+
+ifdef GOVENDOR
+.PHONY: $(GOVENDOR)
+$(GOVENDOR):
+ GOOS= GOARCH= $(GO) get -u github.com/kardianos/govendor
+endif
+
+.PHONY: precheck
+precheck::
+
+define PRECHECK_COMMAND_template =
+precheck:: $(1)_precheck
+
+PRECHECK_COMMAND_$(1) ?= $(1) $$(strip $$(PRECHECK_OPTIONS_$(1)))
+.PHONY: $(1)_precheck
+$(1)_precheck:
+ @if ! $$(PRECHECK_COMMAND_$(1)) 1>/dev/null 2>&1; then \
+ echo "Execution of '$$(PRECHECK_COMMAND_$(1))' command failed. Is $(1) installed?"; \
+ exit 1; \
+ fi
+endef
diff --git a/vendor/github.com/prometheus/procfs/NOTICE b/vendor/github.com/prometheus/procfs/NOTICE
new file mode 100644
index 0000000..53c5e9a
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/NOTICE
@@ -0,0 +1,7 @@
+procfs provides functions to retrieve system, kernel and process
+metrics from the pseudo-filesystem proc.
+
+Copyright 2014-2015 The Prometheus Authors
+
+This product includes software developed at
+SoundCloud Ltd. (http://soundcloud.com/).
diff --git a/vendor/github.com/prometheus/procfs/README.md b/vendor/github.com/prometheus/procfs/README.md
new file mode 100644
index 0000000..6f8850f
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/README.md
@@ -0,0 +1,53 @@
+# procfs
+
+This procfs package provides functions to retrieve system, kernel and process
+metrics from the pseudo-filesystems /proc and /sys.
+
+*WARNING*: This package is a work in progress. Its API may still break in
+backwards-incompatible ways without warnings. Use it at your own risk.
+
+[](https://godoc.org/github.com/prometheus/procfs)
+[](https://travis-ci.org/prometheus/procfs)
+[](https://goreportcard.com/report/github.com/prometheus/procfs)
+
+## Usage
+
+The procfs library is organized by packages based on whether the gathered data is coming from
+/proc, /sys, or both. Each package contains an `FS` type which represents the path to either /proc, /sys, or both. For example, current cpu statistics are gathered from
+`/proc/stat` and are available via the root procfs package. First, the proc filesystem mount
+point is initialized, and then the stat information is read.
+
+```go
+fs, err := procfs.NewFS("/proc")
+stats, err := fs.Stat()
+```
+
+Some sub-packages such as `blockdevice`, require access to both the proc and sys filesystems.
+
+```go
+ fs, err := blockdevice.NewFS("/proc", "/sys")
+ stats, err := fs.ProcDiskstats()
+```
+
+## Building and Testing
+
+The procfs library is normally built as part of another application. However, when making
+changes to the library, the `make test` command can be used to run the API test suite.
+
+### Updating Test Fixtures
+
+The procfs library includes a set of test fixtures which include many example files from
+the `/proc` and `/sys` filesystems. These fixtures are included as a [ttar](https://github.com/ideaship/ttar) file
+which is extracted automatically during testing. To add/update the test fixtures, first
+ensure the `fixtures` directory is up to date by removing the existing directory and then
+extracting the ttar file using `make fixtures/.unpacked` or just `make test`.
+
+```bash
+rm -rf fixtures
+make test
+```
+
+Next, make the required changes to the extracted files in the `fixtures` directory. When
+the changes are complete, run `make update_fixtures` to create a new `fixtures.ttar` file
+based on the updated `fixtures` directory. And finally, verify the changes using
+`git diff fixtures.ttar`.
diff --git a/vendor/github.com/prometheus/procfs/buddyinfo.go b/vendor/github.com/prometheus/procfs/buddyinfo.go
new file mode 100644
index 0000000..63d4229
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/buddyinfo.go
@@ -0,0 +1,85 @@
+// Copyright 2017 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package procfs
+
+import (
+ "bufio"
+ "fmt"
+ "io"
+ "os"
+ "strconv"
+ "strings"
+)
+
+// A BuddyInfo is the details parsed from /proc/buddyinfo.
+// The data is comprised of an array of free fragments of each size.
+// The sizes are 2^n*PAGE_SIZE, where n is the array index.
+type BuddyInfo struct {
+ Node string
+ Zone string
+ Sizes []float64
+}
+
+// NewBuddyInfo reads the buddyinfo statistics from the specified `proc` filesystem.
+func (fs FS) BuddyInfo() ([]BuddyInfo, error) {
+ file, err := os.Open(fs.proc.Path("buddyinfo"))
+ if err != nil {
+ return nil, err
+ }
+ defer file.Close()
+
+ return parseBuddyInfo(file)
+}
+
+func parseBuddyInfo(r io.Reader) ([]BuddyInfo, error) {
+ var (
+ buddyInfo = []BuddyInfo{}
+ scanner = bufio.NewScanner(r)
+ bucketCount = -1
+ )
+
+ for scanner.Scan() {
+ var err error
+ line := scanner.Text()
+ parts := strings.Fields(line)
+
+ if len(parts) < 4 {
+ return nil, fmt.Errorf("invalid number of fields when parsing buddyinfo")
+ }
+
+ node := strings.TrimRight(parts[1], ",")
+ zone := strings.TrimRight(parts[3], ",")
+ arraySize := len(parts[4:])
+
+ if bucketCount == -1 {
+ bucketCount = arraySize
+ } else {
+ if bucketCount != arraySize {
+ return nil, fmt.Errorf("mismatch in number of buddyinfo buckets, previous count %d, new count %d", bucketCount, arraySize)
+ }
+ }
+
+ sizes := make([]float64, arraySize)
+ for i := 0; i < arraySize; i++ {
+ sizes[i], err = strconv.ParseFloat(parts[i+4], 64)
+ if err != nil {
+ return nil, fmt.Errorf("invalid value in buddyinfo: %s", err)
+ }
+ }
+
+ buddyInfo = append(buddyInfo, BuddyInfo{node, zone, sizes})
+ }
+
+ return buddyInfo, scanner.Err()
+}
diff --git a/vendor/github.com/prometheus/procfs/doc.go b/vendor/github.com/prometheus/procfs/doc.go
new file mode 100644
index 0000000..e2acd6d
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/doc.go
@@ -0,0 +1,45 @@
+// Copyright 2014 Prometheus Team
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package procfs provides functions to retrieve system, kernel and process
+// metrics from the pseudo-filesystem proc.
+//
+// Example:
+//
+// package main
+//
+// import (
+// "fmt"
+// "log"
+//
+// "github.com/prometheus/procfs"
+// )
+//
+// func main() {
+// p, err := procfs.Self()
+// if err != nil {
+// log.Fatalf("could not get process: %s", err)
+// }
+//
+// stat, err := p.NewStat()
+// if err != nil {
+// log.Fatalf("could not get process stat: %s", err)
+// }
+//
+// fmt.Printf("command: %s\n", stat.Comm)
+// fmt.Printf("cpu time: %fs\n", stat.CPUTime())
+// fmt.Printf("vsize: %dB\n", stat.VirtualMemory())
+// fmt.Printf("rss: %dB\n", stat.ResidentMemory())
+// }
+//
+package procfs
diff --git a/vendor/github.com/prometheus/procfs/fixtures.ttar b/vendor/github.com/prometheus/procfs/fixtures.ttar
new file mode 100644
index 0000000..6b42e7b
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fixtures.ttar
@@ -0,0 +1,2343 @@
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+Directory: fixtures
+Mode: 775
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+Path: fixtures/proc/26231/cwd
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+Directory: fixtures/sys/kernel/config/target/iscsi/iqn.2003-01.org.linux-iscsi.osd1.x8664:sn.abcd1abcd2ab/tpgt_1/lun/lun_0/statistics/scsi_tgt_port
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/sys/kernel/config/target/iscsi/iqn.2003-01.org.linux-iscsi.osd1.x8664:sn.abcd1abcd2ab/tpgt_1/lun/lun_0/statistics/scsi_tgt_port/in_cmds
+Lines: 1
+104950
+Mode: 644
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/sys/kernel/config/target/iscsi/iqn.2003-01.org.linux-iscsi.osd1.x8664:sn.abcd1abcd2ab/tpgt_1/lun/lun_0/statistics/scsi_tgt_port/read_mbytes
+Lines: 1
+20095
+Mode: 644
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/sys/kernel/config/target/iscsi/iqn.2003-01.org.linux-iscsi.osd1.x8664:sn.abcd1abcd2ab/tpgt_1/lun/lun_0/statistics/scsi_tgt_port/write_mbytes
+Lines: 1
+71235
+Mode: 644
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/sys/kernel/config/target/iscsi/iqn.2016-11.org.linux-iscsi.igw.x86:dev.rbd0
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/sys/kernel/config/target/iscsi/iqn.2016-11.org.linux-iscsi.igw.x86:dev.rbd0/tpgt_1
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/sys/kernel/config/target/iscsi/iqn.2016-11.org.linux-iscsi.igw.x86:dev.rbd0/tpgt_1/enable
+Lines: 1
+1
+Mode: 644
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/sys/kernel/config/target/iscsi/iqn.2016-11.org.linux-iscsi.igw.x86:dev.rbd0/tpgt_1/lun
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/sys/kernel/config/target/iscsi/iqn.2016-11.org.linux-iscsi.igw.x86:dev.rbd0/tpgt_1/lun/lun_0
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/sys/kernel/config/target/iscsi/iqn.2016-11.org.linux-iscsi.igw.x86:dev.rbd0/tpgt_1/lun/lun_0/fff5e16686
+SymlinkTo: ../../../../../../target/core/fileio_1/file_lio_1G
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/sys/kernel/config/target/iscsi/iqn.2016-11.org.linux-iscsi.igw.x86:dev.rbd0/tpgt_1/lun/lun_0/statistics
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/sys/kernel/config/target/iscsi/iqn.2016-11.org.linux-iscsi.igw.x86:dev.rbd0/tpgt_1/lun/lun_0/statistics/scsi_tgt_port
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/sys/kernel/config/target/iscsi/iqn.2016-11.org.linux-iscsi.igw.x86:dev.rbd0/tpgt_1/lun/lun_0/statistics/scsi_tgt_port/in_cmds
+Lines: 1
+301950
+Mode: 644
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/sys/kernel/config/target/iscsi/iqn.2016-11.org.linux-iscsi.igw.x86:dev.rbd0/tpgt_1/lun/lun_0/statistics/scsi_tgt_port/read_mbytes
+Lines: 1
+10195
+Mode: 644
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/sys/kernel/config/target/iscsi/iqn.2016-11.org.linux-iscsi.igw.x86:dev.rbd0/tpgt_1/lun/lun_0/statistics/scsi_tgt_port/write_mbytes
+Lines: 1
+30195
+Mode: 644
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/sys/kernel/config/target/iscsi/iqn.2016-11.org.linux-iscsi.igw.x86:sn.ramdemo
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/sys/kernel/config/target/iscsi/iqn.2016-11.org.linux-iscsi.igw.x86:sn.ramdemo/tpgt_1
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/sys/kernel/config/target/iscsi/iqn.2016-11.org.linux-iscsi.igw.x86:sn.ramdemo/tpgt_1/enable
+Lines: 1
+1
+Mode: 644
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/sys/kernel/config/target/iscsi/iqn.2016-11.org.linux-iscsi.igw.x86:sn.ramdemo/tpgt_1/lun
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/sys/kernel/config/target/iscsi/iqn.2016-11.org.linux-iscsi.igw.x86:sn.ramdemo/tpgt_1/lun/lun_0
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/sys/kernel/config/target/iscsi/iqn.2016-11.org.linux-iscsi.igw.x86:sn.ramdemo/tpgt_1/lun/lun_0/eba1edf893
+SymlinkTo: ../../../../../../target/core/rbd_0/iscsi-images-demo
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/sys/kernel/config/target/iscsi/iqn.2016-11.org.linux-iscsi.igw.x86:sn.ramdemo/tpgt_1/lun/lun_0/statistics
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/sys/kernel/config/target/iscsi/iqn.2016-11.org.linux-iscsi.igw.x86:sn.ramdemo/tpgt_1/lun/lun_0/statistics/scsi_tgt_port
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/sys/kernel/config/target/iscsi/iqn.2016-11.org.linux-iscsi.igw.x86:sn.ramdemo/tpgt_1/lun/lun_0/statistics/scsi_tgt_port/in_cmds
+Lines: 1
+1234
+Mode: 644
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/sys/kernel/config/target/iscsi/iqn.2016-11.org.linux-iscsi.igw.x86:sn.ramdemo/tpgt_1/lun/lun_0/statistics/scsi_tgt_port/read_mbytes
+Lines: 1
+1504
+Mode: 644
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/sys/kernel/config/target/iscsi/iqn.2016-11.org.linux-iscsi.igw.x86:sn.ramdemo/tpgt_1/lun/lun_0/statistics/scsi_tgt_port/write_mbytes
+Lines: 1
+4733
+Mode: 644
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
diff --git a/vendor/github.com/prometheus/procfs/fs.go b/vendor/github.com/prometheus/procfs/fs.go
new file mode 100644
index 0000000..0102ab0
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/fs.go
@@ -0,0 +1,43 @@
+// Copyright 2018 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package procfs
+
+import (
+ "github.com/prometheus/procfs/internal/fs"
+)
+
+// FS represents the pseudo-filesystem sys, which provides an interface to
+// kernel data structures.
+type FS struct {
+ proc fs.FS
+}
+
+// DefaultMountPoint is the common mount point of the proc filesystem.
+const DefaultMountPoint = fs.DefaultProcMountPoint
+
+// NewDefaultFS returns a new proc FS mounted under the default proc mountPoint.
+// It will error if the mount point directory can't be read or is a file.
+func NewDefaultFS() (FS, error) {
+ return NewFS(DefaultMountPoint)
+}
+
+// NewFS returns a new proc FS mounted under the given proc mountPoint. It will error
+// if the mount point directory can't be read or is a file.
+func NewFS(mountPoint string) (FS, error) {
+ fs, err := fs.NewFS(mountPoint)
+ if err != nil {
+ return FS{}, err
+ }
+ return FS{fs}, nil
+}
diff --git a/vendor/github.com/prometheus/procfs/go.mod b/vendor/github.com/prometheus/procfs/go.mod
new file mode 100644
index 0000000..b2f8cca
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/go.mod
@@ -0,0 +1,6 @@
+module github.com/prometheus/procfs
+
+require (
+ github.com/google/go-cmp v0.3.0
+ golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4
+)
diff --git a/vendor/github.com/prometheus/procfs/go.sum b/vendor/github.com/prometheus/procfs/go.sum
new file mode 100644
index 0000000..db54133
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/go.sum
@@ -0,0 +1,4 @@
+github.com/google/go-cmp v0.3.0 h1:crn/baboCvb5fXaQ0IJ1SGTsTVrWpDsCWC8EGETZijY=
+github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
+golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4 h1:YUO/7uOKsKeq9UokNS62b8FYywz3ker1l1vDZRCRefw=
+golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
diff --git a/vendor/github.com/prometheus/procfs/internal/fs/fs.go b/vendor/github.com/prometheus/procfs/internal/fs/fs.go
new file mode 100644
index 0000000..7ddfd6b
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/internal/fs/fs.go
@@ -0,0 +1,55 @@
+// 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.
+
+package fs
+
+import (
+ "fmt"
+ "os"
+ "path/filepath"
+)
+
+const (
+ // DefaultProcMountPoint is the common mount point of the proc filesystem.
+ DefaultProcMountPoint = "/proc"
+
+ // DefaultSysMountPoint is the common mount point of the sys filesystem.
+ DefaultSysMountPoint = "/sys"
+
+ // DefaultConfigfsMountPoint is the commont mount point of the configfs
+ DefaultConfigfsMountPoint = "/sys/kernel/config"
+)
+
+// FS represents a pseudo-filesystem, normally /proc or /sys, which provides an
+// interface to kernel data structures.
+type FS string
+
+// NewFS returns a new FS mounted under the given mountPoint. It will error
+// if the mount point can't be read.
+func NewFS(mountPoint string) (FS, error) {
+ info, err := os.Stat(mountPoint)
+ if err != nil {
+ return "", fmt.Errorf("could not read %s: %s", mountPoint, err)
+ }
+ if !info.IsDir() {
+ return "", fmt.Errorf("mount point %s is not a directory", mountPoint)
+ }
+
+ return FS(mountPoint), nil
+}
+
+// Path appends the given path elements to the filesystem path, adding separators
+// as necessary.
+func (fs FS) Path(p ...string) string {
+ return filepath.Join(append([]string{string(fs)}, p...)...)
+}
diff --git a/vendor/github.com/prometheus/procfs/ipvs.go b/vendor/github.com/prometheus/procfs/ipvs.go
new file mode 100644
index 0000000..2d6cb8d
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/ipvs.go
@@ -0,0 +1,239 @@
+// Copyright 2018 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package procfs
+
+import (
+ "bufio"
+ "encoding/hex"
+ "errors"
+ "fmt"
+ "io"
+ "io/ioutil"
+ "net"
+ "os"
+ "strconv"
+ "strings"
+)
+
+// IPVSStats holds IPVS statistics, as exposed by the kernel in `/proc/net/ip_vs_stats`.
+type IPVSStats struct {
+ // Total count of connections.
+ Connections uint64
+ // Total incoming packages processed.
+ IncomingPackets uint64
+ // Total outgoing packages processed.
+ OutgoingPackets uint64
+ // Total incoming traffic.
+ IncomingBytes uint64
+ // Total outgoing traffic.
+ OutgoingBytes uint64
+}
+
+// IPVSBackendStatus holds current metrics of one virtual / real address pair.
+type IPVSBackendStatus struct {
+ // The local (virtual) IP address.
+ LocalAddress net.IP
+ // The remote (real) IP address.
+ RemoteAddress net.IP
+ // The local (virtual) port.
+ LocalPort uint16
+ // The remote (real) port.
+ RemotePort uint16
+ // The local firewall mark
+ LocalMark string
+ // The transport protocol (TCP, UDP).
+ Proto string
+ // The current number of active connections for this virtual/real address pair.
+ ActiveConn uint64
+ // The current number of inactive connections for this virtual/real address pair.
+ InactConn uint64
+ // The current weight of this virtual/real address pair.
+ Weight uint64
+}
+
+// IPVSStats reads the IPVS statistics from the specified `proc` filesystem.
+func (fs FS) IPVSStats() (IPVSStats, error) {
+ file, err := os.Open(fs.proc.Path("net/ip_vs_stats"))
+ if err != nil {
+ return IPVSStats{}, err
+ }
+ defer file.Close()
+
+ return parseIPVSStats(file)
+}
+
+// parseIPVSStats performs the actual parsing of `ip_vs_stats`.
+func parseIPVSStats(file io.Reader) (IPVSStats, error) {
+ var (
+ statContent []byte
+ statLines []string
+ statFields []string
+ stats IPVSStats
+ )
+
+ statContent, err := ioutil.ReadAll(file)
+ if err != nil {
+ return IPVSStats{}, err
+ }
+
+ statLines = strings.SplitN(string(statContent), "\n", 4)
+ if len(statLines) != 4 {
+ return IPVSStats{}, errors.New("ip_vs_stats corrupt: too short")
+ }
+
+ statFields = strings.Fields(statLines[2])
+ if len(statFields) != 5 {
+ return IPVSStats{}, errors.New("ip_vs_stats corrupt: unexpected number of fields")
+ }
+
+ stats.Connections, err = strconv.ParseUint(statFields[0], 16, 64)
+ if err != nil {
+ return IPVSStats{}, err
+ }
+ stats.IncomingPackets, err = strconv.ParseUint(statFields[1], 16, 64)
+ if err != nil {
+ return IPVSStats{}, err
+ }
+ stats.OutgoingPackets, err = strconv.ParseUint(statFields[2], 16, 64)
+ if err != nil {
+ return IPVSStats{}, err
+ }
+ stats.IncomingBytes, err = strconv.ParseUint(statFields[3], 16, 64)
+ if err != nil {
+ return IPVSStats{}, err
+ }
+ stats.OutgoingBytes, err = strconv.ParseUint(statFields[4], 16, 64)
+ if err != nil {
+ return IPVSStats{}, err
+ }
+
+ return stats, nil
+}
+
+// IPVSBackendStatus reads and returns the status of all (virtual,real) server pairs from the specified `proc` filesystem.
+func (fs FS) IPVSBackendStatus() ([]IPVSBackendStatus, error) {
+ file, err := os.Open(fs.proc.Path("net/ip_vs"))
+ if err != nil {
+ return nil, err
+ }
+ defer file.Close()
+
+ return parseIPVSBackendStatus(file)
+}
+
+func parseIPVSBackendStatus(file io.Reader) ([]IPVSBackendStatus, error) {
+ var (
+ status []IPVSBackendStatus
+ scanner = bufio.NewScanner(file)
+ proto string
+ localMark string
+ localAddress net.IP
+ localPort uint16
+ err error
+ )
+
+ for scanner.Scan() {
+ fields := strings.Fields(scanner.Text())
+ if len(fields) == 0 {
+ continue
+ }
+ switch {
+ case fields[0] == "IP" || fields[0] == "Prot" || fields[1] == "RemoteAddress:Port":
+ continue
+ case fields[0] == "TCP" || fields[0] == "UDP":
+ if len(fields) < 2 {
+ continue
+ }
+ proto = fields[0]
+ localMark = ""
+ localAddress, localPort, err = parseIPPort(fields[1])
+ if err != nil {
+ return nil, err
+ }
+ case fields[0] == "FWM":
+ if len(fields) < 2 {
+ continue
+ }
+ proto = fields[0]
+ localMark = fields[1]
+ localAddress = nil
+ localPort = 0
+ case fields[0] == "->":
+ if len(fields) < 6 {
+ continue
+ }
+ remoteAddress, remotePort, err := parseIPPort(fields[1])
+ if err != nil {
+ return nil, err
+ }
+ weight, err := strconv.ParseUint(fields[3], 10, 64)
+ if err != nil {
+ return nil, err
+ }
+ activeConn, err := strconv.ParseUint(fields[4], 10, 64)
+ if err != nil {
+ return nil, err
+ }
+ inactConn, err := strconv.ParseUint(fields[5], 10, 64)
+ if err != nil {
+ return nil, err
+ }
+ status = append(status, IPVSBackendStatus{
+ LocalAddress: localAddress,
+ LocalPort: localPort,
+ LocalMark: localMark,
+ RemoteAddress: remoteAddress,
+ RemotePort: remotePort,
+ Proto: proto,
+ Weight: weight,
+ ActiveConn: activeConn,
+ InactConn: inactConn,
+ })
+ }
+ }
+ return status, nil
+}
+
+func parseIPPort(s string) (net.IP, uint16, error) {
+ var (
+ ip net.IP
+ err error
+ )
+
+ switch len(s) {
+ case 13:
+ ip, err = hex.DecodeString(s[0:8])
+ if err != nil {
+ return nil, 0, err
+ }
+ case 46:
+ ip = net.ParseIP(s[1:40])
+ if ip == nil {
+ return nil, 0, fmt.Errorf("invalid IPv6 address: %s", s[1:40])
+ }
+ default:
+ return nil, 0, fmt.Errorf("unexpected IP:Port: %s", s)
+ }
+
+ portString := s[len(s)-4:]
+ if len(portString) != 4 {
+ return nil, 0, fmt.Errorf("unexpected port string format: %s", portString)
+ }
+ port, err := strconv.ParseUint(portString, 16, 16)
+ if err != nil {
+ return nil, 0, err
+ }
+
+ return ip, uint16(port), nil
+}
diff --git a/vendor/github.com/prometheus/procfs/mdstat.go b/vendor/github.com/prometheus/procfs/mdstat.go
new file mode 100644
index 0000000..2af3ada
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/mdstat.go
@@ -0,0 +1,194 @@
+// Copyright 2018 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package procfs
+
+import (
+ "fmt"
+ "io/ioutil"
+ "regexp"
+ "strconv"
+ "strings"
+)
+
+var (
+ statusLineRE = regexp.MustCompile(`(\d+) blocks .*\[(\d+)/(\d+)\] \[[U_]+\]`)
+ recoveryLineRE = regexp.MustCompile(`\((\d+)/\d+\)`)
+)
+
+// MDStat holds info parsed from /proc/mdstat.
+type MDStat struct {
+ // Name of the device.
+ Name string
+ // activity-state of the device.
+ ActivityState string
+ // Number of active disks.
+ DisksActive int64
+ // Total number of disks the device requires.
+ DisksTotal int64
+ // Number of failed disks.
+ DisksFailed int64
+ // Spare disks in the device.
+ DisksSpare int64
+ // Number of blocks the device holds.
+ BlocksTotal int64
+ // Number of blocks on the device that are in sync.
+ BlocksSynced int64
+}
+
+// MDStat parses an mdstat-file (/proc/mdstat) and returns a slice of
+// structs containing the relevant info. More information available here:
+// https://raid.wiki.kernel.org/index.php/Mdstat
+func (fs FS) MDStat() ([]MDStat, error) {
+ data, err := ioutil.ReadFile(fs.proc.Path("mdstat"))
+ if err != nil {
+ return nil, fmt.Errorf("error parsing mdstat %s: %s", fs.proc.Path("mdstat"), err)
+ }
+ mdstat, err := parseMDStat(data)
+ if err != nil {
+ return nil, fmt.Errorf("error parsing mdstat %s: %s", fs.proc.Path("mdstat"), err)
+ }
+ return mdstat, nil
+}
+
+// parseMDStat parses data from mdstat file (/proc/mdstat) and returns a slice of
+// structs containing the relevant info.
+func parseMDStat(mdStatData []byte) ([]MDStat, error) {
+ mdStats := []MDStat{}
+ lines := strings.Split(string(mdStatData), "\n")
+
+ for i, line := range lines {
+ if strings.TrimSpace(line) == "" || line[0] == ' ' ||
+ strings.HasPrefix(line, "Personalities") ||
+ strings.HasPrefix(line, "unused") {
+ continue
+ }
+
+ deviceFields := strings.Fields(line)
+ if len(deviceFields) < 3 {
+ return nil, fmt.Errorf("not enough fields in mdline (expected at least 3): %s", line)
+ }
+ mdName := deviceFields[0] // mdx
+ state := deviceFields[2] // active or inactive
+
+ if len(lines) <= i+3 {
+ return nil, fmt.Errorf(
+ "error parsing %s: too few lines for md device",
+ mdName,
+ )
+ }
+
+ // Failed disks have the suffix (F) & Spare disks have the suffix (S).
+ fail := int64(strings.Count(line, "(F)"))
+ spare := int64(strings.Count(line, "(S)"))
+ active, total, size, err := evalStatusLine(lines[i], lines[i+1])
+
+ if err != nil {
+ return nil, fmt.Errorf("error parsing md device lines: %s", err)
+ }
+
+ syncLineIdx := i + 2
+ if strings.Contains(lines[i+2], "bitmap") { // skip bitmap line
+ syncLineIdx++
+ }
+
+ // If device is syncing at the moment, get the number of currently
+ // synced bytes, otherwise that number equals the size of the device.
+ syncedBlocks := size
+ recovering := strings.Contains(lines[syncLineIdx], "recovery")
+ resyncing := strings.Contains(lines[syncLineIdx], "resync")
+
+ // Append recovery and resyncing state info.
+ if recovering || resyncing {
+ if recovering {
+ state = "recovering"
+ } else {
+ state = "resyncing"
+ }
+
+ // Handle case when resync=PENDING or resync=DELAYED.
+ if strings.Contains(lines[syncLineIdx], "PENDING") ||
+ strings.Contains(lines[syncLineIdx], "DELAYED") {
+ syncedBlocks = 0
+ } else {
+ syncedBlocks, err = evalRecoveryLine(lines[syncLineIdx])
+ if err != nil {
+ return nil, fmt.Errorf("error parsing sync line in md device %s: %s", mdName, err)
+ }
+ }
+ }
+
+ mdStats = append(mdStats, MDStat{
+ Name: mdName,
+ ActivityState: state,
+ DisksActive: active,
+ DisksFailed: fail,
+ DisksSpare: spare,
+ DisksTotal: total,
+ BlocksTotal: size,
+ BlocksSynced: syncedBlocks,
+ })
+ }
+
+ return mdStats, nil
+}
+
+func evalStatusLine(deviceLine, statusLine string) (active, total, size int64, err error) {
+
+ sizeStr := strings.Fields(statusLine)[0]
+ size, err = strconv.ParseInt(sizeStr, 10, 64)
+ if err != nil {
+ return 0, 0, 0, fmt.Errorf("unexpected statusLine %s: %s", statusLine, err)
+ }
+
+ if strings.Contains(deviceLine, "raid0") || strings.Contains(deviceLine, "linear") {
+ // In the device deviceLine, only disks have a number associated with them in [].
+ total = int64(strings.Count(deviceLine, "["))
+ return total, total, size, nil
+ }
+
+ if strings.Contains(deviceLine, "inactive") {
+ return 0, 0, size, nil
+ }
+
+ matches := statusLineRE.FindStringSubmatch(statusLine)
+ if len(matches) != 4 {
+ return 0, 0, 0, fmt.Errorf("couldn't find all the substring matches: %s", statusLine)
+ }
+
+ total, err = strconv.ParseInt(matches[2], 10, 64)
+ if err != nil {
+ return 0, 0, 0, fmt.Errorf("unexpected statusLine %s: %s", statusLine, err)
+ }
+
+ active, err = strconv.ParseInt(matches[3], 10, 64)
+ if err != nil {
+ return 0, 0, 0, fmt.Errorf("unexpected statusLine %s: %s", statusLine, err)
+ }
+
+ return active, total, size, nil
+}
+
+func evalRecoveryLine(recoveryLine string) (syncedBlocks int64, err error) {
+ matches := recoveryLineRE.FindStringSubmatch(recoveryLine)
+ if len(matches) != 2 {
+ return 0, fmt.Errorf("unexpected recoveryLine: %s", recoveryLine)
+ }
+
+ syncedBlocks, err = strconv.ParseInt(matches[1], 10, 64)
+ if err != nil {
+ return 0, fmt.Errorf("%s in recoveryLine: %s", err, recoveryLine)
+ }
+
+ return syncedBlocks, nil
+}
diff --git a/vendor/github.com/prometheus/procfs/mountinfo.go b/vendor/github.com/prometheus/procfs/mountinfo.go
new file mode 100644
index 0000000..61fa618
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/mountinfo.go
@@ -0,0 +1,178 @@
+// 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.
+
+package procfs
+
+import (
+ "bufio"
+ "fmt"
+ "io"
+ "os"
+ "strconv"
+ "strings"
+)
+
+var validOptionalFields = map[string]bool{
+ "shared": true,
+ "master": true,
+ "propagate_from": true,
+ "unbindable": true,
+}
+
+// A MountInfo is a type that describes the details, options
+// for each mount, parsed from /proc/self/mountinfo.
+// The fields described in each entry of /proc/self/mountinfo
+// is described in the following man page.
+// http://man7.org/linux/man-pages/man5/proc.5.html
+type MountInfo struct {
+ // Unique Id for the mount
+ MountId int
+ // The Id of the parent mount
+ ParentId int
+ // The value of `st_dev` for the files on this FS
+ MajorMinorVer string
+ // The pathname of the directory in the FS that forms
+ // the root for this mount
+ Root string
+ // The pathname of the mount point relative to the root
+ MountPoint string
+ // Mount options
+ Options map[string]string
+ // Zero or more optional fields
+ OptionalFields map[string]string
+ // The Filesystem type
+ FSType string
+ // FS specific information or "none"
+ Source string
+ // Superblock options
+ SuperOptions map[string]string
+}
+
+// Returns part of the mountinfo line, if it exists, else an empty string.
+func getStringSliceElement(parts []string, idx int, defaultValue string) string {
+ if idx >= len(parts) {
+ return defaultValue
+ }
+ return parts[idx]
+}
+
+// Reads each line of the mountinfo file, and returns a list of formatted MountInfo structs.
+func parseMountInfo(r io.Reader) ([]*MountInfo, error) {
+ mounts := []*MountInfo{}
+ scanner := bufio.NewScanner(r)
+ for scanner.Scan() {
+ mountString := scanner.Text()
+ parsedMounts, err := parseMountInfoString(mountString)
+ if err != nil {
+ return nil, err
+ }
+ mounts = append(mounts, parsedMounts)
+ }
+
+ err := scanner.Err()
+ return mounts, err
+}
+
+// Parses a mountinfo file line, and converts it to a MountInfo struct.
+// An important check here is to see if the hyphen separator, as if it does not exist,
+// it means that the line is malformed.
+func parseMountInfoString(mountString string) (*MountInfo, error) {
+ var err error
+
+ // OptionalFields can be zero, hence these checks to ensure we do not populate the wrong values in the wrong spots
+ separatorIndex := strings.Index(mountString, "-")
+ if separatorIndex == -1 {
+ return nil, fmt.Errorf("no separator found in mountinfo string: %s", mountString)
+ }
+ beforeFields := strings.Fields(mountString[:separatorIndex])
+ afterFields := strings.Fields(mountString[separatorIndex+1:])
+ if (len(beforeFields) + len(afterFields)) < 7 {
+ return nil, fmt.Errorf("too few fields")
+ }
+
+ mount := &MountInfo{
+ MajorMinorVer: getStringSliceElement(beforeFields, 2, ""),
+ Root: getStringSliceElement(beforeFields, 3, ""),
+ MountPoint: getStringSliceElement(beforeFields, 4, ""),
+ Options: mountOptionsParser(getStringSliceElement(beforeFields, 5, "")),
+ OptionalFields: nil,
+ FSType: getStringSliceElement(afterFields, 0, ""),
+ Source: getStringSliceElement(afterFields, 1, ""),
+ SuperOptions: mountOptionsParser(getStringSliceElement(afterFields, 2, "")),
+ }
+
+ mount.MountId, err = strconv.Atoi(getStringSliceElement(beforeFields, 0, ""))
+ if err != nil {
+ return nil, fmt.Errorf("failed to parse mount ID")
+ }
+ mount.ParentId, err = strconv.Atoi(getStringSliceElement(beforeFields, 1, ""))
+ if err != nil {
+ return nil, fmt.Errorf("failed to parse parent ID")
+ }
+ // Has optional fields, which is a space separated list of values.
+ // Example: shared:2 master:7
+ if len(beforeFields) > 6 {
+ mount.OptionalFields = make(map[string]string)
+ optionalFields := beforeFields[6:]
+ for _, field := range optionalFields {
+ optionSplit := strings.Split(field, ":")
+ target, value := optionSplit[0], ""
+ if len(optionSplit) == 2 {
+ value = optionSplit[1]
+ }
+ // Checks if the 'keys' in the optional fields in the mountinfo line are acceptable.
+ // Allowed 'keys' are shared, master, propagate_from, unbindable.
+ if _, ok := validOptionalFields[target]; ok {
+ mount.OptionalFields[target] = value
+ }
+ }
+ }
+ return mount, nil
+}
+
+// Parses the mount options, superblock options.
+func mountOptionsParser(mountOptions string) map[string]string {
+ opts := make(map[string]string)
+ options := strings.Split(mountOptions, ",")
+ for _, opt := range options {
+ splitOption := strings.Split(opt, "=")
+ if len(splitOption) < 2 {
+ key := splitOption[0]
+ opts[key] = ""
+ } else {
+ key, value := splitOption[0], splitOption[1]
+ opts[key] = value
+ }
+ }
+ return opts
+}
+
+// Retrieves mountinfo information from `/proc/self/mountinfo`.
+func GetMounts() ([]*MountInfo, error) {
+ f, err := os.Open("/proc/self/mountinfo")
+ if err != nil {
+ return nil, err
+ }
+ defer f.Close()
+ return parseMountInfo(f)
+}
+
+// Retrieves mountinfo information from a processes' `/proc/<pid>/mountinfo`.
+func GetProcMounts(pid int) ([]*MountInfo, error) {
+ f, err := os.Open(fmt.Sprintf("/proc/%d/mountinfo", pid))
+ if err != nil {
+ return nil, err
+ }
+ defer f.Close()
+ return parseMountInfo(f)
+}
diff --git a/vendor/github.com/prometheus/procfs/mountstats.go b/vendor/github.com/prometheus/procfs/mountstats.go
new file mode 100644
index 0000000..35b2ef3
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/mountstats.go
@@ -0,0 +1,621 @@
+// Copyright 2018 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package procfs
+
+// While implementing parsing of /proc/[pid]/mountstats, this blog was used
+// heavily as a reference:
+// https://utcc.utoronto.ca/~cks/space/blog/linux/NFSMountstatsIndex
+//
+// Special thanks to Chris Siebenmann for all of his posts explaining the
+// various statistics available for NFS.
+
+import (
+ "bufio"
+ "fmt"
+ "io"
+ "strconv"
+ "strings"
+ "time"
+)
+
+// Constants shared between multiple functions.
+const (
+ deviceEntryLen = 8
+
+ fieldBytesLen = 8
+ fieldEventsLen = 27
+
+ statVersion10 = "1.0"
+ statVersion11 = "1.1"
+
+ fieldTransport10TCPLen = 10
+ fieldTransport10UDPLen = 7
+
+ fieldTransport11TCPLen = 13
+ fieldTransport11UDPLen = 10
+)
+
+// A Mount is a device mount parsed from /proc/[pid]/mountstats.
+type Mount struct {
+ // Name of the device.
+ Device string
+ // The mount point of the device.
+ Mount string
+ // The filesystem type used by the device.
+ Type string
+ // If available additional statistics related to this Mount.
+ // Use a type assertion to determine if additional statistics are available.
+ Stats MountStats
+}
+
+// A MountStats is a type which contains detailed statistics for a specific
+// type of Mount.
+type MountStats interface {
+ mountStats()
+}
+
+// A MountStatsNFS is a MountStats implementation for NFSv3 and v4 mounts.
+type MountStatsNFS struct {
+ // The version of statistics provided.
+ StatVersion string
+ // The mount options of the NFS mount.
+ Opts map[string]string
+ // The age of the NFS mount.
+ Age time.Duration
+ // Statistics related to byte counters for various operations.
+ Bytes NFSBytesStats
+ // Statistics related to various NFS event occurrences.
+ Events NFSEventsStats
+ // Statistics broken down by filesystem operation.
+ Operations []NFSOperationStats
+ // Statistics about the NFS RPC transport.
+ Transport NFSTransportStats
+}
+
+// mountStats implements MountStats.
+func (m MountStatsNFS) mountStats() {}
+
+// A NFSBytesStats contains statistics about the number of bytes read and written
+// by an NFS client to and from an NFS server.
+type NFSBytesStats struct {
+ // Number of bytes read using the read() syscall.
+ Read uint64
+ // Number of bytes written using the write() syscall.
+ Write uint64
+ // Number of bytes read using the read() syscall in O_DIRECT mode.
+ DirectRead uint64
+ // Number of bytes written using the write() syscall in O_DIRECT mode.
+ DirectWrite uint64
+ // Number of bytes read from the NFS server, in total.
+ ReadTotal uint64
+ // Number of bytes written to the NFS server, in total.
+ WriteTotal uint64
+ // Number of pages read directly via mmap()'d files.
+ ReadPages uint64
+ // Number of pages written directly via mmap()'d files.
+ WritePages uint64
+}
+
+// A NFSEventsStats contains statistics about NFS event occurrences.
+type NFSEventsStats struct {
+ // Number of times cached inode attributes are re-validated from the server.
+ InodeRevalidate uint64
+ // Number of times cached dentry nodes are re-validated from the server.
+ DnodeRevalidate uint64
+ // Number of times an inode cache is cleared.
+ DataInvalidate uint64
+ // Number of times cached inode attributes are invalidated.
+ AttributeInvalidate uint64
+ // Number of times files or directories have been open()'d.
+ VFSOpen uint64
+ // Number of times a directory lookup has occurred.
+ VFSLookup uint64
+ // Number of times permissions have been checked.
+ VFSAccess uint64
+ // Number of updates (and potential writes) to pages.
+ VFSUpdatePage uint64
+ // Number of pages read directly via mmap()'d files.
+ VFSReadPage uint64
+ // Number of times a group of pages have been read.
+ VFSReadPages uint64
+ // Number of pages written directly via mmap()'d files.
+ VFSWritePage uint64
+ // Number of times a group of pages have been written.
+ VFSWritePages uint64
+ // Number of times directory entries have been read with getdents().
+ VFSGetdents uint64
+ // Number of times attributes have been set on inodes.
+ VFSSetattr uint64
+ // Number of pending writes that have been forcefully flushed to the server.
+ VFSFlush uint64
+ // Number of times fsync() has been called on directories and files.
+ VFSFsync uint64
+ // Number of times locking has been attempted on a file.
+ VFSLock uint64
+ // Number of times files have been closed and released.
+ VFSFileRelease uint64
+ // Unknown. Possibly unused.
+ CongestionWait uint64
+ // Number of times files have been truncated.
+ Truncation uint64
+ // Number of times a file has been grown due to writes beyond its existing end.
+ WriteExtension uint64
+ // Number of times a file was removed while still open by another process.
+ SillyRename uint64
+ // Number of times the NFS server gave less data than expected while reading.
+ ShortRead uint64
+ // Number of times the NFS server wrote less data than expected while writing.
+ ShortWrite uint64
+ // Number of times the NFS server indicated EJUKEBOX; retrieving data from
+ // offline storage.
+ JukeboxDelay uint64
+ // Number of NFS v4.1+ pNFS reads.
+ PNFSRead uint64
+ // Number of NFS v4.1+ pNFS writes.
+ PNFSWrite uint64
+}
+
+// A NFSOperationStats contains statistics for a single operation.
+type NFSOperationStats struct {
+ // The name of the operation.
+ Operation string
+ // Number of requests performed for this operation.
+ Requests uint64
+ // Number of times an actual RPC request has been transmitted for this operation.
+ Transmissions uint64
+ // Number of times a request has had a major timeout.
+ MajorTimeouts uint64
+ // Number of bytes sent for this operation, including RPC headers and payload.
+ BytesSent uint64
+ // Number of bytes received for this operation, including RPC headers and payload.
+ BytesReceived uint64
+ // Duration all requests spent queued for transmission before they were sent.
+ CumulativeQueueMilliseconds uint64
+ // Duration it took to get a reply back after the request was transmitted.
+ CumulativeTotalResponseMilliseconds uint64
+ // Duration from when a request was enqueued to when it was completely handled.
+ CumulativeTotalRequestMilliseconds uint64
+}
+
+// A NFSTransportStats contains statistics for the NFS mount RPC requests and
+// responses.
+type NFSTransportStats struct {
+ // The transport protocol used for the NFS mount.
+ Protocol string
+ // The local port used for the NFS mount.
+ Port uint64
+ // Number of times the client has had to establish a connection from scratch
+ // to the NFS server.
+ Bind uint64
+ // Number of times the client has made a TCP connection to the NFS server.
+ Connect uint64
+ // Duration (in jiffies, a kernel internal unit of time) the NFS mount has
+ // spent waiting for connections to the server to be established.
+ ConnectIdleTime uint64
+ // Duration since the NFS mount last saw any RPC traffic.
+ IdleTimeSeconds uint64
+ // Number of RPC requests for this mount sent to the NFS server.
+ Sends uint64
+ // Number of RPC responses for this mount received from the NFS server.
+ Receives uint64
+ // Number of times the NFS server sent a response with a transaction ID
+ // unknown to this client.
+ BadTransactionIDs uint64
+ // A running counter, incremented on each request as the current difference
+ // ebetween sends and receives.
+ CumulativeActiveRequests uint64
+ // A running counter, incremented on each request by the current backlog
+ // queue size.
+ CumulativeBacklog uint64
+
+ // Stats below only available with stat version 1.1.
+
+ // Maximum number of simultaneously active RPC requests ever used.
+ MaximumRPCSlotsUsed uint64
+ // A running counter, incremented on each request as the current size of the
+ // sending queue.
+ CumulativeSendingQueue uint64
+ // A running counter, incremented on each request as the current size of the
+ // pending queue.
+ CumulativePendingQueue uint64
+}
+
+// parseMountStats parses a /proc/[pid]/mountstats file and returns a slice
+// of Mount structures containing detailed information about each mount.
+// If available, statistics for each mount are parsed as well.
+func parseMountStats(r io.Reader) ([]*Mount, error) {
+ const (
+ device = "device"
+ statVersionPrefix = "statvers="
+
+ nfs3Type = "nfs"
+ nfs4Type = "nfs4"
+ )
+
+ var mounts []*Mount
+
+ s := bufio.NewScanner(r)
+ for s.Scan() {
+ // Only look for device entries in this function
+ ss := strings.Fields(string(s.Bytes()))
+ if len(ss) == 0 || ss[0] != device {
+ continue
+ }
+
+ m, err := parseMount(ss)
+ if err != nil {
+ return nil, err
+ }
+
+ // Does this mount also possess statistics information?
+ if len(ss) > deviceEntryLen {
+ // Only NFSv3 and v4 are supported for parsing statistics
+ if m.Type != nfs3Type && m.Type != nfs4Type {
+ return nil, fmt.Errorf("cannot parse MountStats for fstype %q", m.Type)
+ }
+
+ statVersion := strings.TrimPrefix(ss[8], statVersionPrefix)
+
+ stats, err := parseMountStatsNFS(s, statVersion)
+ if err != nil {
+ return nil, err
+ }
+
+ m.Stats = stats
+ }
+
+ mounts = append(mounts, m)
+ }
+
+ return mounts, s.Err()
+}
+
+// parseMount parses an entry in /proc/[pid]/mountstats in the format:
+// device [device] mounted on [mount] with fstype [type]
+func parseMount(ss []string) (*Mount, error) {
+ if len(ss) < deviceEntryLen {
+ return nil, fmt.Errorf("invalid device entry: %v", ss)
+ }
+
+ // Check for specific words appearing at specific indices to ensure
+ // the format is consistent with what we expect
+ format := []struct {
+ i int
+ s string
+ }{
+ {i: 0, s: "device"},
+ {i: 2, s: "mounted"},
+ {i: 3, s: "on"},
+ {i: 5, s: "with"},
+ {i: 6, s: "fstype"},
+ }
+
+ for _, f := range format {
+ if ss[f.i] != f.s {
+ return nil, fmt.Errorf("invalid device entry: %v", ss)
+ }
+ }
+
+ return &Mount{
+ Device: ss[1],
+ Mount: ss[4],
+ Type: ss[7],
+ }, nil
+}
+
+// parseMountStatsNFS parses a MountStatsNFS by scanning additional information
+// related to NFS statistics.
+func parseMountStatsNFS(s *bufio.Scanner, statVersion string) (*MountStatsNFS, error) {
+ // Field indicators for parsing specific types of data
+ const (
+ fieldOpts = "opts:"
+ fieldAge = "age:"
+ fieldBytes = "bytes:"
+ fieldEvents = "events:"
+ fieldPerOpStats = "per-op"
+ fieldTransport = "xprt:"
+ )
+
+ stats := &MountStatsNFS{
+ StatVersion: statVersion,
+ }
+
+ for s.Scan() {
+ ss := strings.Fields(string(s.Bytes()))
+ if len(ss) == 0 {
+ break
+ }
+ if len(ss) < 2 {
+ return nil, fmt.Errorf("not enough information for NFS stats: %v", ss)
+ }
+
+ switch ss[0] {
+ case fieldOpts:
+ if stats.Opts == nil {
+ stats.Opts = map[string]string{}
+ }
+ for _, opt := range strings.Split(ss[1], ",") {
+ split := strings.Split(opt, "=")
+ if len(split) == 2 {
+ stats.Opts[split[0]] = split[1]
+ } else {
+ stats.Opts[opt] = ""
+ }
+ }
+ case fieldAge:
+ // Age integer is in seconds
+ d, err := time.ParseDuration(ss[1] + "s")
+ if err != nil {
+ return nil, err
+ }
+
+ stats.Age = d
+ case fieldBytes:
+ bstats, err := parseNFSBytesStats(ss[1:])
+ if err != nil {
+ return nil, err
+ }
+
+ stats.Bytes = *bstats
+ case fieldEvents:
+ estats, err := parseNFSEventsStats(ss[1:])
+ if err != nil {
+ return nil, err
+ }
+
+ stats.Events = *estats
+ case fieldTransport:
+ if len(ss) < 3 {
+ return nil, fmt.Errorf("not enough information for NFS transport stats: %v", ss)
+ }
+
+ tstats, err := parseNFSTransportStats(ss[1:], statVersion)
+ if err != nil {
+ return nil, err
+ }
+
+ stats.Transport = *tstats
+ }
+
+ // When encountering "per-operation statistics", we must break this
+ // loop and parse them separately to ensure we can terminate parsing
+ // before reaching another device entry; hence why this 'if' statement
+ // is not just another switch case
+ if ss[0] == fieldPerOpStats {
+ break
+ }
+ }
+
+ if err := s.Err(); err != nil {
+ return nil, err
+ }
+
+ // NFS per-operation stats appear last before the next device entry
+ perOpStats, err := parseNFSOperationStats(s)
+ if err != nil {
+ return nil, err
+ }
+
+ stats.Operations = perOpStats
+
+ return stats, nil
+}
+
+// parseNFSBytesStats parses a NFSBytesStats line using an input set of
+// integer fields.
+func parseNFSBytesStats(ss []string) (*NFSBytesStats, error) {
+ if len(ss) != fieldBytesLen {
+ return nil, fmt.Errorf("invalid NFS bytes stats: %v", ss)
+ }
+
+ ns := make([]uint64, 0, fieldBytesLen)
+ for _, s := range ss {
+ n, err := strconv.ParseUint(s, 10, 64)
+ if err != nil {
+ return nil, err
+ }
+
+ ns = append(ns, n)
+ }
+
+ return &NFSBytesStats{
+ Read: ns[0],
+ Write: ns[1],
+ DirectRead: ns[2],
+ DirectWrite: ns[3],
+ ReadTotal: ns[4],
+ WriteTotal: ns[5],
+ ReadPages: ns[6],
+ WritePages: ns[7],
+ }, nil
+}
+
+// parseNFSEventsStats parses a NFSEventsStats line using an input set of
+// integer fields.
+func parseNFSEventsStats(ss []string) (*NFSEventsStats, error) {
+ if len(ss) != fieldEventsLen {
+ return nil, fmt.Errorf("invalid NFS events stats: %v", ss)
+ }
+
+ ns := make([]uint64, 0, fieldEventsLen)
+ for _, s := range ss {
+ n, err := strconv.ParseUint(s, 10, 64)
+ if err != nil {
+ return nil, err
+ }
+
+ ns = append(ns, n)
+ }
+
+ return &NFSEventsStats{
+ InodeRevalidate: ns[0],
+ DnodeRevalidate: ns[1],
+ DataInvalidate: ns[2],
+ AttributeInvalidate: ns[3],
+ VFSOpen: ns[4],
+ VFSLookup: ns[5],
+ VFSAccess: ns[6],
+ VFSUpdatePage: ns[7],
+ VFSReadPage: ns[8],
+ VFSReadPages: ns[9],
+ VFSWritePage: ns[10],
+ VFSWritePages: ns[11],
+ VFSGetdents: ns[12],
+ VFSSetattr: ns[13],
+ VFSFlush: ns[14],
+ VFSFsync: ns[15],
+ VFSLock: ns[16],
+ VFSFileRelease: ns[17],
+ CongestionWait: ns[18],
+ Truncation: ns[19],
+ WriteExtension: ns[20],
+ SillyRename: ns[21],
+ ShortRead: ns[22],
+ ShortWrite: ns[23],
+ JukeboxDelay: ns[24],
+ PNFSRead: ns[25],
+ PNFSWrite: ns[26],
+ }, nil
+}
+
+// parseNFSOperationStats parses a slice of NFSOperationStats by scanning
+// additional information about per-operation statistics until an empty
+// line is reached.
+func parseNFSOperationStats(s *bufio.Scanner) ([]NFSOperationStats, error) {
+ const (
+ // Number of expected fields in each per-operation statistics set
+ numFields = 9
+ )
+
+ var ops []NFSOperationStats
+
+ for s.Scan() {
+ ss := strings.Fields(string(s.Bytes()))
+ if len(ss) == 0 {
+ // Must break when reading a blank line after per-operation stats to
+ // enable top-level function to parse the next device entry
+ break
+ }
+
+ if len(ss) != numFields {
+ return nil, fmt.Errorf("invalid NFS per-operations stats: %v", ss)
+ }
+
+ // Skip string operation name for integers
+ ns := make([]uint64, 0, numFields-1)
+ for _, st := range ss[1:] {
+ n, err := strconv.ParseUint(st, 10, 64)
+ if err != nil {
+ return nil, err
+ }
+
+ ns = append(ns, n)
+ }
+
+ ops = append(ops, NFSOperationStats{
+ Operation: strings.TrimSuffix(ss[0], ":"),
+ Requests: ns[0],
+ Transmissions: ns[1],
+ MajorTimeouts: ns[2],
+ BytesSent: ns[3],
+ BytesReceived: ns[4],
+ CumulativeQueueMilliseconds: ns[5],
+ CumulativeTotalResponseMilliseconds: ns[6],
+ CumulativeTotalRequestMilliseconds: ns[7],
+ })
+ }
+
+ return ops, s.Err()
+}
+
+// parseNFSTransportStats parses a NFSTransportStats line using an input set of
+// integer fields matched to a specific stats version.
+func parseNFSTransportStats(ss []string, statVersion string) (*NFSTransportStats, error) {
+ // Extract the protocol field. It is the only string value in the line
+ protocol := ss[0]
+ ss = ss[1:]
+
+ switch statVersion {
+ case statVersion10:
+ var expectedLength int
+ if protocol == "tcp" {
+ expectedLength = fieldTransport10TCPLen
+ } else if protocol == "udp" {
+ expectedLength = fieldTransport10UDPLen
+ } else {
+ return nil, fmt.Errorf("invalid NFS protocol \"%s\" in stats 1.0 statement: %v", protocol, ss)
+ }
+ if len(ss) != expectedLength {
+ return nil, fmt.Errorf("invalid NFS transport stats 1.0 statement: %v", ss)
+ }
+ case statVersion11:
+ var expectedLength int
+ if protocol == "tcp" {
+ expectedLength = fieldTransport11TCPLen
+ } else if protocol == "udp" {
+ expectedLength = fieldTransport11UDPLen
+ } else {
+ return nil, fmt.Errorf("invalid NFS protocol \"%s\" in stats 1.1 statement: %v", protocol, ss)
+ }
+ if len(ss) != expectedLength {
+ return nil, fmt.Errorf("invalid NFS transport stats 1.1 statement: %v", ss)
+ }
+ default:
+ return nil, fmt.Errorf("unrecognized NFS transport stats version: %q", statVersion)
+ }
+
+ // Allocate enough for v1.1 stats since zero value for v1.1 stats will be okay
+ // in a v1.0 response. Since the stat length is bigger for TCP stats, we use
+ // the TCP length here.
+ //
+ // Note: slice length must be set to length of v1.1 stats to avoid a panic when
+ // only v1.0 stats are present.
+ // See: https://github.com/prometheus/node_exporter/issues/571.
+ ns := make([]uint64, fieldTransport11TCPLen)
+ for i, s := range ss {
+ n, err := strconv.ParseUint(s, 10, 64)
+ if err != nil {
+ return nil, err
+ }
+
+ ns[i] = n
+ }
+
+ // The fields differ depending on the transport protocol (TCP or UDP)
+ // From https://utcc.utoronto.ca/%7Ecks/space/blog/linux/NFSMountstatsXprt
+ //
+ // For the udp RPC transport there is no connection count, connect idle time,
+ // or idle time (fields #3, #4, and #5); all other fields are the same. So
+ // we set them to 0 here.
+ if protocol == "udp" {
+ ns = append(ns[:2], append(make([]uint64, 3), ns[2:]...)...)
+ }
+
+ return &NFSTransportStats{
+ Protocol: protocol,
+ Port: ns[0],
+ Bind: ns[1],
+ Connect: ns[2],
+ ConnectIdleTime: ns[3],
+ IdleTimeSeconds: ns[4],
+ Sends: ns[5],
+ Receives: ns[6],
+ BadTransactionIDs: ns[7],
+ CumulativeActiveRequests: ns[8],
+ CumulativeBacklog: ns[9],
+ MaximumRPCSlotsUsed: ns[10],
+ CumulativeSendingQueue: ns[11],
+ CumulativePendingQueue: ns[12],
+ }, nil
+}
diff --git a/vendor/github.com/prometheus/procfs/net_dev.go b/vendor/github.com/prometheus/procfs/net_dev.go
new file mode 100644
index 0000000..a0b7a01
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/net_dev.go
@@ -0,0 +1,206 @@
+// Copyright 2018 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package procfs
+
+import (
+ "bufio"
+ "errors"
+ "os"
+ "sort"
+ "strconv"
+ "strings"
+)
+
+// NetDevLine is single line parsed from /proc/net/dev or /proc/[pid]/net/dev.
+type NetDevLine struct {
+ Name string `json:"name"` // The name of the interface.
+ RxBytes uint64 `json:"rx_bytes"` // Cumulative count of bytes received.
+ RxPackets uint64 `json:"rx_packets"` // Cumulative count of packets received.
+ RxErrors uint64 `json:"rx_errors"` // Cumulative count of receive errors encountered.
+ RxDropped uint64 `json:"rx_dropped"` // Cumulative count of packets dropped while receiving.
+ RxFIFO uint64 `json:"rx_fifo"` // Cumulative count of FIFO buffer errors.
+ RxFrame uint64 `json:"rx_frame"` // Cumulative count of packet framing errors.
+ RxCompressed uint64 `json:"rx_compressed"` // Cumulative count of compressed packets received by the device driver.
+ RxMulticast uint64 `json:"rx_multicast"` // Cumulative count of multicast frames received by the device driver.
+ TxBytes uint64 `json:"tx_bytes"` // Cumulative count of bytes transmitted.
+ TxPackets uint64 `json:"tx_packets"` // Cumulative count of packets transmitted.
+ TxErrors uint64 `json:"tx_errors"` // Cumulative count of transmit errors encountered.
+ TxDropped uint64 `json:"tx_dropped"` // Cumulative count of packets dropped while transmitting.
+ TxFIFO uint64 `json:"tx_fifo"` // Cumulative count of FIFO buffer errors.
+ TxCollisions uint64 `json:"tx_collisions"` // Cumulative count of collisions detected on the interface.
+ TxCarrier uint64 `json:"tx_carrier"` // Cumulative count of carrier losses detected by the device driver.
+ TxCompressed uint64 `json:"tx_compressed"` // Cumulative count of compressed packets transmitted by the device driver.
+}
+
+// NetDev is parsed from /proc/net/dev or /proc/[pid]/net/dev. The map keys
+// are interface names.
+type NetDev map[string]NetDevLine
+
+// NetDev returns kernel/system statistics read from /proc/net/dev.
+func (fs FS) NetDev() (NetDev, error) {
+ return newNetDev(fs.proc.Path("net/dev"))
+}
+
+// NetDev returns kernel/system statistics read from /proc/[pid]/net/dev.
+func (p Proc) NetDev() (NetDev, error) {
+ return newNetDev(p.path("net/dev"))
+}
+
+// newNetDev creates a new NetDev from the contents of the given file.
+func newNetDev(file string) (NetDev, error) {
+ f, err := os.Open(file)
+ if err != nil {
+ return NetDev{}, err
+ }
+ defer f.Close()
+
+ netDev := NetDev{}
+ s := bufio.NewScanner(f)
+ for n := 0; s.Scan(); n++ {
+ // Skip the 2 header lines.
+ if n < 2 {
+ continue
+ }
+
+ line, err := netDev.parseLine(s.Text())
+ if err != nil {
+ return netDev, err
+ }
+
+ netDev[line.Name] = *line
+ }
+
+ return netDev, s.Err()
+}
+
+// parseLine parses a single line from the /proc/net/dev file. Header lines
+// must be filtered prior to calling this method.
+func (netDev NetDev) parseLine(rawLine string) (*NetDevLine, error) {
+ parts := strings.SplitN(rawLine, ":", 2)
+ if len(parts) != 2 {
+ return nil, errors.New("invalid net/dev line, missing colon")
+ }
+ fields := strings.Fields(strings.TrimSpace(parts[1]))
+
+ var err error
+ line := &NetDevLine{}
+
+ // Interface Name
+ line.Name = strings.TrimSpace(parts[0])
+ if line.Name == "" {
+ return nil, errors.New("invalid net/dev line, empty interface name")
+ }
+
+ // RX
+ line.RxBytes, err = strconv.ParseUint(fields[0], 10, 64)
+ if err != nil {
+ return nil, err
+ }
+ line.RxPackets, err = strconv.ParseUint(fields[1], 10, 64)
+ if err != nil {
+ return nil, err
+ }
+ line.RxErrors, err = strconv.ParseUint(fields[2], 10, 64)
+ if err != nil {
+ return nil, err
+ }
+ line.RxDropped, err = strconv.ParseUint(fields[3], 10, 64)
+ if err != nil {
+ return nil, err
+ }
+ line.RxFIFO, err = strconv.ParseUint(fields[4], 10, 64)
+ if err != nil {
+ return nil, err
+ }
+ line.RxFrame, err = strconv.ParseUint(fields[5], 10, 64)
+ if err != nil {
+ return nil, err
+ }
+ line.RxCompressed, err = strconv.ParseUint(fields[6], 10, 64)
+ if err != nil {
+ return nil, err
+ }
+ line.RxMulticast, err = strconv.ParseUint(fields[7], 10, 64)
+ if err != nil {
+ return nil, err
+ }
+
+ // TX
+ line.TxBytes, err = strconv.ParseUint(fields[8], 10, 64)
+ if err != nil {
+ return nil, err
+ }
+ line.TxPackets, err = strconv.ParseUint(fields[9], 10, 64)
+ if err != nil {
+ return nil, err
+ }
+ line.TxErrors, err = strconv.ParseUint(fields[10], 10, 64)
+ if err != nil {
+ return nil, err
+ }
+ line.TxDropped, err = strconv.ParseUint(fields[11], 10, 64)
+ if err != nil {
+ return nil, err
+ }
+ line.TxFIFO, err = strconv.ParseUint(fields[12], 10, 64)
+ if err != nil {
+ return nil, err
+ }
+ line.TxCollisions, err = strconv.ParseUint(fields[13], 10, 64)
+ if err != nil {
+ return nil, err
+ }
+ line.TxCarrier, err = strconv.ParseUint(fields[14], 10, 64)
+ if err != nil {
+ return nil, err
+ }
+ line.TxCompressed, err = strconv.ParseUint(fields[15], 10, 64)
+ if err != nil {
+ return nil, err
+ }
+
+ return line, nil
+}
+
+// Total aggregates the values across interfaces and returns a new NetDevLine.
+// The Name field will be a sorted comma separated list of interface names.
+func (netDev NetDev) Total() NetDevLine {
+ total := NetDevLine{}
+
+ names := make([]string, 0, len(netDev))
+ for _, ifc := range netDev {
+ names = append(names, ifc.Name)
+ total.RxBytes += ifc.RxBytes
+ total.RxPackets += ifc.RxPackets
+ total.RxPackets += ifc.RxPackets
+ total.RxErrors += ifc.RxErrors
+ total.RxDropped += ifc.RxDropped
+ total.RxFIFO += ifc.RxFIFO
+ total.RxFrame += ifc.RxFrame
+ total.RxCompressed += ifc.RxCompressed
+ total.RxMulticast += ifc.RxMulticast
+ total.TxBytes += ifc.TxBytes
+ total.TxPackets += ifc.TxPackets
+ total.TxErrors += ifc.TxErrors
+ total.TxDropped += ifc.TxDropped
+ total.TxFIFO += ifc.TxFIFO
+ total.TxCollisions += ifc.TxCollisions
+ total.TxCarrier += ifc.TxCarrier
+ total.TxCompressed += ifc.TxCompressed
+ }
+ sort.Strings(names)
+ total.Name = strings.Join(names, ", ")
+
+ return total
+}
diff --git a/vendor/github.com/prometheus/procfs/net_unix.go b/vendor/github.com/prometheus/procfs/net_unix.go
new file mode 100644
index 0000000..240340a
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/net_unix.go
@@ -0,0 +1,275 @@
+// Copyright 2018 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package procfs
+
+import (
+ "bufio"
+ "errors"
+ "fmt"
+ "io"
+ "os"
+ "strconv"
+ "strings"
+)
+
+// For the proc file format details,
+// see https://elixir.bootlin.com/linux/v4.17/source/net/unix/af_unix.c#L2815
+// and https://elixir.bootlin.com/linux/latest/source/include/uapi/linux/net.h#L48.
+
+const (
+ netUnixKernelPtrIdx = iota
+ netUnixRefCountIdx
+ _
+ netUnixFlagsIdx
+ netUnixTypeIdx
+ netUnixStateIdx
+ netUnixInodeIdx
+
+ // Inode and Path are optional.
+ netUnixStaticFieldsCnt = 6
+)
+
+const (
+ netUnixTypeStream = 1
+ netUnixTypeDgram = 2
+ netUnixTypeSeqpacket = 5
+
+ netUnixFlagListen = 1 << 16
+
+ netUnixStateUnconnected = 1
+ netUnixStateConnecting = 2
+ netUnixStateConnected = 3
+ netUnixStateDisconnected = 4
+)
+
+var errInvalidKernelPtrFmt = errors.New("Invalid Num(the kernel table slot number) format")
+
+// NetUnixType is the type of the type field.
+type NetUnixType uint64
+
+// NetUnixFlags is the type of the flags field.
+type NetUnixFlags uint64
+
+// NetUnixState is the type of the state field.
+type NetUnixState uint64
+
+// NetUnixLine represents a line of /proc/net/unix.
+type NetUnixLine struct {
+ KernelPtr string
+ RefCount uint64
+ Protocol uint64
+ Flags NetUnixFlags
+ Type NetUnixType
+ State NetUnixState
+ Inode uint64
+ Path string
+}
+
+// NetUnix holds the data read from /proc/net/unix.
+type NetUnix struct {
+ Rows []*NetUnixLine
+}
+
+// NewNetUnix returns data read from /proc/net/unix.
+func NewNetUnix() (*NetUnix, error) {
+ fs, err := NewFS(DefaultMountPoint)
+ if err != nil {
+ return nil, err
+ }
+
+ return fs.NewNetUnix()
+}
+
+// NewNetUnix returns data read from /proc/net/unix.
+func (fs FS) NewNetUnix() (*NetUnix, error) {
+ return NewNetUnixByPath(fs.proc.Path("net/unix"))
+}
+
+// NewNetUnixByPath returns data read from /proc/net/unix by file path.
+// It might returns an error with partial parsed data, if an error occur after some data parsed.
+func NewNetUnixByPath(path string) (*NetUnix, error) {
+ f, err := os.Open(path)
+ if err != nil {
+ return nil, err
+ }
+ defer f.Close()
+ return NewNetUnixByReader(f)
+}
+
+// NewNetUnixByReader returns data read from /proc/net/unix by a reader.
+// It might returns an error with partial parsed data, if an error occur after some data parsed.
+func NewNetUnixByReader(reader io.Reader) (*NetUnix, error) {
+ nu := &NetUnix{
+ Rows: make([]*NetUnixLine, 0, 32),
+ }
+ scanner := bufio.NewScanner(reader)
+ // Omit the header line.
+ scanner.Scan()
+ header := scanner.Text()
+ // From the man page of proc(5), it does not contain an Inode field,
+ // but in actually it exists.
+ // This code works for both cases.
+ hasInode := strings.Contains(header, "Inode")
+
+ minFieldsCnt := netUnixStaticFieldsCnt
+ if hasInode {
+ minFieldsCnt++
+ }
+ for scanner.Scan() {
+ line := scanner.Text()
+ item, err := nu.parseLine(line, hasInode, minFieldsCnt)
+ if err != nil {
+ return nu, err
+ }
+ nu.Rows = append(nu.Rows, item)
+ }
+
+ return nu, scanner.Err()
+}
+
+func (u *NetUnix) parseLine(line string, hasInode bool, minFieldsCnt int) (*NetUnixLine, error) {
+ fields := strings.Fields(line)
+ fieldsLen := len(fields)
+ if fieldsLen < minFieldsCnt {
+ return nil, fmt.Errorf(
+ "Parse Unix domain failed: expect at least %d fields but got %d",
+ minFieldsCnt, fieldsLen)
+ }
+ kernelPtr, err := u.parseKernelPtr(fields[netUnixKernelPtrIdx])
+ if err != nil {
+ return nil, fmt.Errorf("Parse Unix domain num(%s) failed: %s", fields[netUnixKernelPtrIdx], err)
+ }
+ users, err := u.parseUsers(fields[netUnixRefCountIdx])
+ if err != nil {
+ return nil, fmt.Errorf("Parse Unix domain ref count(%s) failed: %s", fields[netUnixRefCountIdx], err)
+ }
+ flags, err := u.parseFlags(fields[netUnixFlagsIdx])
+ if err != nil {
+ return nil, fmt.Errorf("Parse Unix domain flags(%s) failed: %s", fields[netUnixFlagsIdx], err)
+ }
+ typ, err := u.parseType(fields[netUnixTypeIdx])
+ if err != nil {
+ return nil, fmt.Errorf("Parse Unix domain type(%s) failed: %s", fields[netUnixTypeIdx], err)
+ }
+ state, err := u.parseState(fields[netUnixStateIdx])
+ if err != nil {
+ return nil, fmt.Errorf("Parse Unix domain state(%s) failed: %s", fields[netUnixStateIdx], err)
+ }
+ var inode uint64
+ if hasInode {
+ inodeStr := fields[netUnixInodeIdx]
+ inode, err = u.parseInode(inodeStr)
+ if err != nil {
+ return nil, fmt.Errorf("Parse Unix domain inode(%s) failed: %s", inodeStr, err)
+ }
+ }
+
+ nuLine := &NetUnixLine{
+ KernelPtr: kernelPtr,
+ RefCount: users,
+ Type: typ,
+ Flags: flags,
+ State: state,
+ Inode: inode,
+ }
+
+ // Path field is optional.
+ if fieldsLen > minFieldsCnt {
+ pathIdx := netUnixInodeIdx + 1
+ if !hasInode {
+ pathIdx--
+ }
+ nuLine.Path = fields[pathIdx]
+ }
+
+ return nuLine, nil
+}
+
+func (u NetUnix) parseKernelPtr(str string) (string, error) {
+ if !strings.HasSuffix(str, ":") {
+ return "", errInvalidKernelPtrFmt
+ }
+ return str[:len(str)-1], nil
+}
+
+func (u NetUnix) parseUsers(hexStr string) (uint64, error) {
+ return strconv.ParseUint(hexStr, 16, 32)
+}
+
+func (u NetUnix) parseProtocol(hexStr string) (uint64, error) {
+ return strconv.ParseUint(hexStr, 16, 32)
+}
+
+func (u NetUnix) parseType(hexStr string) (NetUnixType, error) {
+ typ, err := strconv.ParseUint(hexStr, 16, 16)
+ if err != nil {
+ return 0, err
+ }
+ return NetUnixType(typ), nil
+}
+
+func (u NetUnix) parseFlags(hexStr string) (NetUnixFlags, error) {
+ flags, err := strconv.ParseUint(hexStr, 16, 32)
+ if err != nil {
+ return 0, err
+ }
+ return NetUnixFlags(flags), nil
+}
+
+func (u NetUnix) parseState(hexStr string) (NetUnixState, error) {
+ st, err := strconv.ParseInt(hexStr, 16, 8)
+ if err != nil {
+ return 0, err
+ }
+ return NetUnixState(st), nil
+}
+
+func (u NetUnix) parseInode(inodeStr string) (uint64, error) {
+ return strconv.ParseUint(inodeStr, 10, 64)
+}
+
+func (t NetUnixType) String() string {
+ switch t {
+ case netUnixTypeStream:
+ return "stream"
+ case netUnixTypeDgram:
+ return "dgram"
+ case netUnixTypeSeqpacket:
+ return "seqpacket"
+ }
+ return "unknown"
+}
+
+func (f NetUnixFlags) String() string {
+ switch f {
+ case netUnixFlagListen:
+ return "listen"
+ default:
+ return "default"
+ }
+}
+
+func (s NetUnixState) String() string {
+ switch s {
+ case netUnixStateUnconnected:
+ return "unconnected"
+ case netUnixStateConnecting:
+ return "connecting"
+ case netUnixStateConnected:
+ return "connected"
+ case netUnixStateDisconnected:
+ return "disconnected"
+ }
+ return "unknown"
+}
diff --git a/vendor/github.com/prometheus/procfs/proc.go b/vendor/github.com/prometheus/procfs/proc.go
new file mode 100644
index 0000000..41c148d
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/proc.go
@@ -0,0 +1,281 @@
+// Copyright 2018 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package procfs
+
+import (
+ "bytes"
+ "fmt"
+ "io/ioutil"
+ "os"
+ "strconv"
+ "strings"
+
+ "github.com/prometheus/procfs/internal/fs"
+)
+
+// Proc provides information about a running process.
+type Proc struct {
+ // The process ID.
+ PID int
+
+ fs fs.FS
+}
+
+// Procs represents a list of Proc structs.
+type Procs []Proc
+
+func (p Procs) Len() int { return len(p) }
+func (p Procs) Swap(i, j int) { p[i], p[j] = p[j], p[i] }
+func (p Procs) Less(i, j int) bool { return p[i].PID < p[j].PID }
+
+// Self returns a process for the current process read via /proc/self.
+func Self() (Proc, error) {
+ fs, err := NewFS(DefaultMountPoint)
+ if err != nil {
+ return Proc{}, err
+ }
+ return fs.Self()
+}
+
+// NewProc returns a process for the given pid under /proc.
+func NewProc(pid int) (Proc, error) {
+ fs, err := NewFS(DefaultMountPoint)
+ if err != nil {
+ return Proc{}, err
+ }
+ return fs.Proc(pid)
+}
+
+// AllProcs returns a list of all currently available processes under /proc.
+func AllProcs() (Procs, error) {
+ fs, err := NewFS(DefaultMountPoint)
+ if err != nil {
+ return Procs{}, err
+ }
+ return fs.AllProcs()
+}
+
+// Self returns a process for the current process.
+func (fs FS) Self() (Proc, error) {
+ p, err := os.Readlink(fs.proc.Path("self"))
+ if err != nil {
+ return Proc{}, err
+ }
+ pid, err := strconv.Atoi(strings.Replace(p, string(fs.proc), "", -1))
+ if err != nil {
+ return Proc{}, err
+ }
+ return fs.Proc(pid)
+}
+
+// NewProc returns a process for the given pid.
+//
+// Deprecated: use fs.Proc() instead
+func (fs FS) NewProc(pid int) (Proc, error) {
+ return fs.Proc(pid)
+}
+
+// Proc returns a process for the given pid.
+func (fs FS) Proc(pid int) (Proc, error) {
+ if _, err := os.Stat(fs.proc.Path(strconv.Itoa(pid))); err != nil {
+ return Proc{}, err
+ }
+ return Proc{PID: pid, fs: fs.proc}, nil
+}
+
+// AllProcs returns a list of all currently available processes.
+func (fs FS) AllProcs() (Procs, error) {
+ d, err := os.Open(fs.proc.Path())
+ if err != nil {
+ return Procs{}, err
+ }
+ defer d.Close()
+
+ names, err := d.Readdirnames(-1)
+ if err != nil {
+ return Procs{}, fmt.Errorf("could not read %s: %s", d.Name(), err)
+ }
+
+ p := Procs{}
+ for _, n := range names {
+ pid, err := strconv.ParseInt(n, 10, 64)
+ if err != nil {
+ continue
+ }
+ p = append(p, Proc{PID: int(pid), fs: fs.proc})
+ }
+
+ return p, nil
+}
+
+// CmdLine returns the command line of a process.
+func (p Proc) CmdLine() ([]string, error) {
+ f, err := os.Open(p.path("cmdline"))
+ if err != nil {
+ return nil, err
+ }
+ defer f.Close()
+
+ data, err := ioutil.ReadAll(f)
+ if err != nil {
+ return nil, err
+ }
+
+ if len(data) < 1 {
+ return []string{}, nil
+ }
+
+ return strings.Split(string(bytes.TrimRight(data, string("\x00"))), string(byte(0))), nil
+}
+
+// Comm returns the command name of a process.
+func (p Proc) Comm() (string, error) {
+ f, err := os.Open(p.path("comm"))
+ if err != nil {
+ return "", err
+ }
+ defer f.Close()
+
+ data, err := ioutil.ReadAll(f)
+ if err != nil {
+ return "", err
+ }
+
+ return strings.TrimSpace(string(data)), nil
+}
+
+// Executable returns the absolute path of the executable command of a process.
+func (p Proc) Executable() (string, error) {
+ exe, err := os.Readlink(p.path("exe"))
+ if os.IsNotExist(err) {
+ return "", nil
+ }
+
+ return exe, err
+}
+
+// Cwd returns the absolute path to the current working directory of the process.
+func (p Proc) Cwd() (string, error) {
+ wd, err := os.Readlink(p.path("cwd"))
+ if os.IsNotExist(err) {
+ return "", nil
+ }
+
+ return wd, err
+}
+
+// RootDir returns the absolute path to the process's root directory (as set by chroot)
+func (p Proc) RootDir() (string, error) {
+ rdir, err := os.Readlink(p.path("root"))
+ if os.IsNotExist(err) {
+ return "", nil
+ }
+
+ return rdir, err
+}
+
+// FileDescriptors returns the currently open file descriptors of a process.
+func (p Proc) FileDescriptors() ([]uintptr, error) {
+ names, err := p.fileDescriptors()
+ if err != nil {
+ return nil, err
+ }
+
+ fds := make([]uintptr, len(names))
+ for i, n := range names {
+ fd, err := strconv.ParseInt(n, 10, 32)
+ if err != nil {
+ return nil, fmt.Errorf("could not parse fd %s: %s", n, err)
+ }
+ fds[i] = uintptr(fd)
+ }
+
+ return fds, nil
+}
+
+// FileDescriptorTargets returns the targets of all file descriptors of a process.
+// If a file descriptor is not a symlink to a file (like a socket), that value will be the empty string.
+func (p Proc) FileDescriptorTargets() ([]string, error) {
+ names, err := p.fileDescriptors()
+ if err != nil {
+ return nil, err
+ }
+
+ targets := make([]string, len(names))
+
+ for i, name := range names {
+ target, err := os.Readlink(p.path("fd", name))
+ if err == nil {
+ targets[i] = target
+ }
+ }
+
+ return targets, nil
+}
+
+// FileDescriptorsLen returns the number of currently open file descriptors of
+// a process.
+func (p Proc) FileDescriptorsLen() (int, error) {
+ fds, err := p.fileDescriptors()
+ if err != nil {
+ return 0, err
+ }
+
+ return len(fds), nil
+}
+
+// MountStats retrieves statistics and configuration for mount points in a
+// process's namespace.
+func (p Proc) MountStats() ([]*Mount, error) {
+ f, err := os.Open(p.path("mountstats"))
+ if err != nil {
+ return nil, err
+ }
+ defer f.Close()
+
+ return parseMountStats(f)
+}
+
+// MountInfo retrieves mount information for mount points in a
+// process's namespace.
+// It supplies information missing in `/proc/self/mounts` and
+// fixes various other problems with that file too.
+func (p Proc) MountInfo() ([]*MountInfo, error) {
+ f, err := os.Open(p.path("mountinfo"))
+ if err != nil {
+ return nil, err
+ }
+ defer f.Close()
+
+ return parseMountInfo(f)
+}
+
+func (p Proc) fileDescriptors() ([]string, error) {
+ d, err := os.Open(p.path("fd"))
+ if err != nil {
+ return nil, err
+ }
+ defer d.Close()
+
+ names, err := d.Readdirnames(-1)
+ if err != nil {
+ return nil, fmt.Errorf("could not read %s: %s", d.Name(), err)
+ }
+
+ return names, nil
+}
+
+func (p Proc) path(pa ...string) string {
+ return p.fs.Path(append([]string{strconv.Itoa(p.PID)}, pa...)...)
+}
diff --git a/vendor/github.com/prometheus/procfs/proc_environ.go b/vendor/github.com/prometheus/procfs/proc_environ.go
new file mode 100644
index 0000000..7172bb5
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/proc_environ.go
@@ -0,0 +1,43 @@
+// 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.
+
+package procfs
+
+import (
+ "io/ioutil"
+ "os"
+ "strings"
+)
+
+// Environ reads process environments from /proc/<pid>/environ
+func (p Proc) Environ() ([]string, error) {
+ environments := make([]string, 0)
+
+ f, err := os.Open(p.path("environ"))
+ if err != nil {
+ return environments, err
+ }
+ defer f.Close()
+
+ data, err := ioutil.ReadAll(f)
+ if err != nil {
+ return environments, err
+ }
+
+ environments = strings.Split(string(data), "\000")
+ if len(environments) > 0 {
+ environments = environments[:len(environments)-1]
+ }
+
+ return environments, nil
+}
diff --git a/vendor/github.com/prometheus/procfs/proc_io.go b/vendor/github.com/prometheus/procfs/proc_io.go
new file mode 100644
index 0000000..0ff89b1
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/proc_io.go
@@ -0,0 +1,65 @@
+// Copyright 2018 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package procfs
+
+import (
+ "fmt"
+ "io/ioutil"
+ "os"
+)
+
+// ProcIO models the content of /proc/<pid>/io.
+type ProcIO struct {
+ // Chars read.
+ RChar uint64
+ // Chars written.
+ WChar uint64
+ // Read syscalls.
+ SyscR uint64
+ // Write syscalls.
+ SyscW uint64
+ // Bytes read.
+ ReadBytes uint64
+ // Bytes written.
+ WriteBytes uint64
+ // Bytes written, but taking into account truncation. See
+ // Documentation/filesystems/proc.txt in the kernel sources for
+ // detailed explanation.
+ CancelledWriteBytes int64
+}
+
+// IO creates a new ProcIO instance from a given Proc instance.
+func (p Proc) IO() (ProcIO, error) {
+ pio := ProcIO{}
+
+ f, err := os.Open(p.path("io"))
+ if err != nil {
+ return pio, err
+ }
+ defer f.Close()
+
+ data, err := ioutil.ReadAll(f)
+ if err != nil {
+ return pio, err
+ }
+
+ ioFormat := "rchar: %d\nwchar: %d\nsyscr: %d\nsyscw: %d\n" +
+ "read_bytes: %d\nwrite_bytes: %d\n" +
+ "cancelled_write_bytes: %d\n"
+
+ _, err = fmt.Sscanf(string(data), ioFormat, &pio.RChar, &pio.WChar, &pio.SyscR,
+ &pio.SyscW, &pio.ReadBytes, &pio.WriteBytes, &pio.CancelledWriteBytes)
+
+ return pio, err
+}
diff --git a/vendor/github.com/prometheus/procfs/proc_limits.go b/vendor/github.com/prometheus/procfs/proc_limits.go
new file mode 100644
index 0000000..91ee24d
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/proc_limits.go
@@ -0,0 +1,157 @@
+// Copyright 2018 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package procfs
+
+import (
+ "bufio"
+ "fmt"
+ "os"
+ "regexp"
+ "strconv"
+)
+
+// ProcLimits represents the soft limits for each of the process's resource
+// limits. For more information see getrlimit(2):
+// http://man7.org/linux/man-pages/man2/getrlimit.2.html.
+type ProcLimits struct {
+ // CPU time limit in seconds.
+ CPUTime int64
+ // Maximum size of files that the process may create.
+ FileSize int64
+ // Maximum size of the process's data segment (initialized data,
+ // uninitialized data, and heap).
+ DataSize int64
+ // Maximum size of the process stack in bytes.
+ StackSize int64
+ // Maximum size of a core file.
+ CoreFileSize int64
+ // Limit of the process's resident set in pages.
+ ResidentSet int64
+ // Maximum number of processes that can be created for the real user ID of
+ // the calling process.
+ Processes int64
+ // Value one greater than the maximum file descriptor number that can be
+ // opened by this process.
+ OpenFiles int64
+ // Maximum number of bytes of memory that may be locked into RAM.
+ LockedMemory int64
+ // Maximum size of the process's virtual memory address space in bytes.
+ AddressSpace int64
+ // Limit on the combined number of flock(2) locks and fcntl(2) leases that
+ // this process may establish.
+ FileLocks int64
+ // Limit of signals that may be queued for the real user ID of the calling
+ // process.
+ PendingSignals int64
+ // Limit on the number of bytes that can be allocated for POSIX message
+ // queues for the real user ID of the calling process.
+ MsqqueueSize int64
+ // Limit of the nice priority set using setpriority(2) or nice(2).
+ NicePriority int64
+ // Limit of the real-time priority set using sched_setscheduler(2) or
+ // sched_setparam(2).
+ RealtimePriority int64
+ // Limit (in microseconds) on the amount of CPU time that a process
+ // scheduled under a real-time scheduling policy may consume without making
+ // a blocking system call.
+ RealtimeTimeout int64
+}
+
+const (
+ limitsFields = 3
+ limitsUnlimited = "unlimited"
+)
+
+var (
+ limitsDelimiter = regexp.MustCompile(" +")
+)
+
+// NewLimits returns the current soft limits of the process.
+//
+// Deprecated: use p.Limits() instead
+func (p Proc) NewLimits() (ProcLimits, error) {
+ return p.Limits()
+}
+
+// Limits returns the current soft limits of the process.
+func (p Proc) Limits() (ProcLimits, error) {
+ f, err := os.Open(p.path("limits"))
+ if err != nil {
+ return ProcLimits{}, err
+ }
+ defer f.Close()
+
+ var (
+ l = ProcLimits{}
+ s = bufio.NewScanner(f)
+ )
+ for s.Scan() {
+ fields := limitsDelimiter.Split(s.Text(), limitsFields)
+ if len(fields) != limitsFields {
+ return ProcLimits{}, fmt.Errorf(
+ "couldn't parse %s line %s", f.Name(), s.Text())
+ }
+
+ switch fields[0] {
+ case "Max cpu time":
+ l.CPUTime, err = parseInt(fields[1])
+ case "Max file size":
+ l.FileSize, err = parseInt(fields[1])
+ case "Max data size":
+ l.DataSize, err = parseInt(fields[1])
+ case "Max stack size":
+ l.StackSize, err = parseInt(fields[1])
+ case "Max core file size":
+ l.CoreFileSize, err = parseInt(fields[1])
+ case "Max resident set":
+ l.ResidentSet, err = parseInt(fields[1])
+ case "Max processes":
+ l.Processes, err = parseInt(fields[1])
+ case "Max open files":
+ l.OpenFiles, err = parseInt(fields[1])
+ case "Max locked memory":
+ l.LockedMemory, err = parseInt(fields[1])
+ case "Max address space":
+ l.AddressSpace, err = parseInt(fields[1])
+ case "Max file locks":
+ l.FileLocks, err = parseInt(fields[1])
+ case "Max pending signals":
+ l.PendingSignals, err = parseInt(fields[1])
+ case "Max msgqueue size":
+ l.MsqqueueSize, err = parseInt(fields[1])
+ case "Max nice priority":
+ l.NicePriority, err = parseInt(fields[1])
+ case "Max realtime priority":
+ l.RealtimePriority, err = parseInt(fields[1])
+ case "Max realtime timeout":
+ l.RealtimeTimeout, err = parseInt(fields[1])
+ }
+ if err != nil {
+ return ProcLimits{}, err
+ }
+ }
+
+ return l, s.Err()
+}
+
+func parseInt(s string) (int64, error) {
+ if s == limitsUnlimited {
+ return -1, nil
+ }
+ i, err := strconv.ParseInt(s, 10, 64)
+ if err != nil {
+ return 0, fmt.Errorf("couldn't parse value %s: %s", s, err)
+ }
+ return i, nil
+}
diff --git a/vendor/github.com/prometheus/procfs/proc_ns.go b/vendor/github.com/prometheus/procfs/proc_ns.go
new file mode 100644
index 0000000..c66740f
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/proc_ns.go
@@ -0,0 +1,68 @@
+// Copyright 2018 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package procfs
+
+import (
+ "fmt"
+ "os"
+ "strconv"
+ "strings"
+)
+
+// Namespace represents a single namespace of a process.
+type Namespace struct {
+ Type string // Namespace type.
+ Inode uint32 // Inode number of the namespace. If two processes are in the same namespace their inodes will match.
+}
+
+// Namespaces contains all of the namespaces that the process is contained in.
+type Namespaces map[string]Namespace
+
+// Namespaces reads from /proc/<pid>/ns/* to get the namespaces of which the
+// process is a member.
+func (p Proc) Namespaces() (Namespaces, error) {
+ d, err := os.Open(p.path("ns"))
+ if err != nil {
+ return nil, err
+ }
+ defer d.Close()
+
+ names, err := d.Readdirnames(-1)
+ if err != nil {
+ return nil, fmt.Errorf("failed to read contents of ns dir: %v", err)
+ }
+
+ ns := make(Namespaces, len(names))
+ for _, name := range names {
+ target, err := os.Readlink(p.path("ns", name))
+ if err != nil {
+ return nil, err
+ }
+
+ fields := strings.SplitN(target, ":", 2)
+ if len(fields) != 2 {
+ return nil, fmt.Errorf("failed to parse namespace type and inode from '%v'", target)
+ }
+
+ typ := fields[0]
+ inode, err := strconv.ParseUint(strings.Trim(fields[1], "[]"), 10, 32)
+ if err != nil {
+ return nil, fmt.Errorf("failed to parse inode from '%v': %v", fields[1], err)
+ }
+
+ ns[name] = Namespace{typ, uint32(inode)}
+ }
+
+ return ns, nil
+}
diff --git a/vendor/github.com/prometheus/procfs/proc_psi.go b/vendor/github.com/prometheus/procfs/proc_psi.go
new file mode 100644
index 0000000..46fe266
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/proc_psi.go
@@ -0,0 +1,101 @@
+// 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.
+
+package procfs
+
+// The PSI / pressure interface is described at
+// https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/accounting/psi.txt
+// Each resource (cpu, io, memory, ...) is exposed as a single file.
+// Each file may contain up to two lines, one for "some" pressure and one for "full" pressure.
+// Each line contains several averages (over n seconds) and a total in µs.
+//
+// Example io pressure file:
+// > some avg10=0.06 avg60=0.21 avg300=0.99 total=8537362
+// > full avg10=0.00 avg60=0.13 avg300=0.96 total=8183134
+
+import (
+ "fmt"
+ "io"
+ "io/ioutil"
+ "os"
+ "strings"
+)
+
+const lineFormat = "avg10=%f avg60=%f avg300=%f total=%d"
+
+// PSILine is a single line of values as returned by /proc/pressure/*
+// The Avg entries are averages over n seconds, as a percentage
+// The Total line is in microseconds
+type PSILine struct {
+ Avg10 float64
+ Avg60 float64
+ Avg300 float64
+ Total uint64
+}
+
+// PSIStats represent pressure stall information from /proc/pressure/*
+// Some indicates the share of time in which at least some tasks are stalled
+// Full indicates the share of time in which all non-idle tasks are stalled simultaneously
+type PSIStats struct {
+ Some *PSILine
+ Full *PSILine
+}
+
+// PSIStatsForResource reads pressure stall information for the specified
+// resource from /proc/pressure/<resource>. At time of writing this can be
+// either "cpu", "memory" or "io".
+func (fs FS) PSIStatsForResource(resource string) (PSIStats, error) {
+ file, err := os.Open(fs.proc.Path(fmt.Sprintf("%s/%s", "pressure", resource)))
+ if err != nil {
+ return PSIStats{}, fmt.Errorf("psi_stats: unavailable for %s", resource)
+ }
+
+ defer file.Close()
+ return parsePSIStats(resource, file)
+}
+
+// parsePSIStats parses the specified file for pressure stall information
+func parsePSIStats(resource string, file io.Reader) (PSIStats, error) {
+ psiStats := PSIStats{}
+ stats, err := ioutil.ReadAll(file)
+ if err != nil {
+ return psiStats, fmt.Errorf("psi_stats: unable to read data for %s", resource)
+ }
+
+ for _, l := range strings.Split(string(stats), "\n") {
+ prefix := strings.Split(l, " ")[0]
+ switch prefix {
+ case "some":
+ psi := PSILine{}
+ _, err := fmt.Sscanf(l, fmt.Sprintf("some %s", lineFormat), &psi.Avg10, &psi.Avg60, &psi.Avg300, &psi.Total)
+ if err != nil {
+ return PSIStats{}, err
+ }
+ psiStats.Some = &psi
+ case "full":
+ psi := PSILine{}
+ _, err := fmt.Sscanf(l, fmt.Sprintf("full %s", lineFormat), &psi.Avg10, &psi.Avg60, &psi.Avg300, &psi.Total)
+ if err != nil {
+ return PSIStats{}, err
+ }
+ psiStats.Full = &psi
+ default:
+ // If we encounter a line with an unknown prefix, ignore it and move on
+ // Should new measurement types be added in the future we'll simply ignore them instead
+ // of erroring on retrieval
+ continue
+ }
+ }
+
+ return psiStats, nil
+}
diff --git a/vendor/github.com/prometheus/procfs/proc_stat.go b/vendor/github.com/prometheus/procfs/proc_stat.go
new file mode 100644
index 0000000..dbde1fa
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/proc_stat.go
@@ -0,0 +1,198 @@
+// Copyright 2018 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package procfs
+
+import (
+ "bytes"
+ "fmt"
+ "io/ioutil"
+ "os"
+
+ "github.com/prometheus/procfs/internal/fs"
+)
+
+// Originally, this USER_HZ value was dynamically retrieved via a sysconf call
+// which required cgo. However, that caused a lot of problems regarding
+// cross-compilation. Alternatives such as running a binary to determine the
+// value, or trying to derive it in some other way were all problematic. After
+// much research it was determined that USER_HZ is actually hardcoded to 100 on
+// all Go-supported platforms as of the time of this writing. This is why we
+// decided to hardcode it here as well. It is not impossible that there could
+// be systems with exceptions, but they should be very exotic edge cases, and
+// in that case, the worst outcome will be two misreported metrics.
+//
+// See also the following discussions:
+//
+// - https://github.com/prometheus/node_exporter/issues/52
+// - https://github.com/prometheus/procfs/pull/2
+// - http://stackoverflow.com/questions/17410841/how-does-user-hz-solve-the-jiffy-scaling-issue
+const userHZ = 100
+
+// ProcStat provides status information about the process,
+// read from /proc/[pid]/stat.
+type ProcStat struct {
+ // The process ID.
+ PID int
+ // The filename of the executable.
+ Comm string
+ // The process state.
+ State string
+ // The PID of the parent of this process.
+ PPID int
+ // The process group ID of the process.
+ PGRP int
+ // The session ID of the process.
+ Session int
+ // The controlling terminal of the process.
+ TTY int
+ // The ID of the foreground process group of the controlling terminal of
+ // the process.
+ TPGID int
+ // The kernel flags word of the process.
+ Flags uint
+ // The number of minor faults the process has made which have not required
+ // loading a memory page from disk.
+ MinFlt uint
+ // The number of minor faults that the process's waited-for children have
+ // made.
+ CMinFlt uint
+ // The number of major faults the process has made which have required
+ // loading a memory page from disk.
+ MajFlt uint
+ // The number of major faults that the process's waited-for children have
+ // made.
+ CMajFlt uint
+ // Amount of time that this process has been scheduled in user mode,
+ // measured in clock ticks.
+ UTime uint
+ // Amount of time that this process has been scheduled in kernel mode,
+ // measured in clock ticks.
+ STime uint
+ // Amount of time that this process's waited-for children have been
+ // scheduled in user mode, measured in clock ticks.
+ CUTime uint
+ // Amount of time that this process's waited-for children have been
+ // scheduled in kernel mode, measured in clock ticks.
+ CSTime uint
+ // For processes running a real-time scheduling policy, this is the negated
+ // scheduling priority, minus one.
+ Priority int
+ // The nice value, a value in the range 19 (low priority) to -20 (high
+ // priority).
+ Nice int
+ // Number of threads in this process.
+ NumThreads int
+ // The time the process started after system boot, the value is expressed
+ // in clock ticks.
+ Starttime uint64
+ // Virtual memory size in bytes.
+ VSize uint
+ // Resident set size in pages.
+ RSS int
+
+ proc fs.FS
+}
+
+// NewStat returns the current status information of the process.
+//
+// Deprecated: use p.Stat() instead
+func (p Proc) NewStat() (ProcStat, error) {
+ return p.Stat()
+}
+
+// Stat returns the current status information of the process.
+func (p Proc) Stat() (ProcStat, error) {
+ f, err := os.Open(p.path("stat"))
+ if err != nil {
+ return ProcStat{}, err
+ }
+ defer f.Close()
+
+ data, err := ioutil.ReadAll(f)
+ if err != nil {
+ return ProcStat{}, err
+ }
+
+ var (
+ ignore int
+
+ s = ProcStat{PID: p.PID, proc: p.fs}
+ l = bytes.Index(data, []byte("("))
+ r = bytes.LastIndex(data, []byte(")"))
+ )
+
+ if l < 0 || r < 0 {
+ return ProcStat{}, fmt.Errorf(
+ "unexpected format, couldn't extract comm: %s",
+ data,
+ )
+ }
+
+ s.Comm = string(data[l+1 : r])
+ _, err = fmt.Fscan(
+ bytes.NewBuffer(data[r+2:]),
+ &s.State,
+ &s.PPID,
+ &s.PGRP,
+ &s.Session,
+ &s.TTY,
+ &s.TPGID,
+ &s.Flags,
+ &s.MinFlt,
+ &s.CMinFlt,
+ &s.MajFlt,
+ &s.CMajFlt,
+ &s.UTime,
+ &s.STime,
+ &s.CUTime,
+ &s.CSTime,
+ &s.Priority,
+ &s.Nice,
+ &s.NumThreads,
+ &ignore,
+ &s.Starttime,
+ &s.VSize,
+ &s.RSS,
+ )
+ if err != nil {
+ return ProcStat{}, err
+ }
+
+ return s, nil
+}
+
+// VirtualMemory returns the virtual memory size in bytes.
+func (s ProcStat) VirtualMemory() uint {
+ return s.VSize
+}
+
+// ResidentMemory returns the resident memory size in bytes.
+func (s ProcStat) ResidentMemory() int {
+ return s.RSS * os.Getpagesize()
+}
+
+// StartTime returns the unix timestamp of the process in seconds.
+func (s ProcStat) StartTime() (float64, error) {
+ fs := FS{proc: s.proc}
+ stat, err := fs.Stat()
+ if err != nil {
+ return 0, err
+ }
+ return float64(stat.BootTime) + (float64(s.Starttime) / userHZ), nil
+}
+
+// CPUTime returns the total CPU user and system time in seconds.
+func (s ProcStat) CPUTime() float64 {
+ return float64(s.UTime+s.STime) / userHZ
+}
diff --git a/vendor/github.com/prometheus/procfs/proc_status.go b/vendor/github.com/prometheus/procfs/proc_status.go
new file mode 100644
index 0000000..6b4b61f
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/proc_status.go
@@ -0,0 +1,162 @@
+// Copyright 2018 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package procfs
+
+import (
+ "bytes"
+ "io/ioutil"
+ "os"
+ "strconv"
+ "strings"
+)
+
+// ProcStat provides status information about the process,
+// read from /proc/[pid]/stat.
+type ProcStatus struct {
+ // The process ID.
+ PID int
+ // The process name.
+ Name string
+
+ // Peak virtual memory size.
+ VmPeak uint64
+ // Virtual memory size.
+ VmSize uint64
+ // Locked memory size.
+ VmLck uint64
+ // Pinned memory size.
+ VmPin uint64
+ // Peak resident set size.
+ VmHWM uint64
+ // Resident set size (sum of RssAnnon RssFile and RssShmem).
+ VmRSS uint64
+ // Size of resident anonymous memory.
+ RssAnon uint64
+ // Size of resident file mappings.
+ RssFile uint64
+ // Size of resident shared memory.
+ RssShmem uint64
+ // Size of data segments.
+ VmData uint64
+ // Size of stack segments.
+ VmStk uint64
+ // Size of text segments.
+ VmExe uint64
+ // Shared library code size.
+ VmLib uint64
+ // Page table entries size.
+ VmPTE uint64
+ // Size of second-level page tables.
+ VmPMD uint64
+ // Swapped-out virtual memory size by anonymous private.
+ VmSwap uint64
+ // Size of hugetlb memory portions
+ HugetlbPages uint64
+
+ // Number of voluntary context switches.
+ VoluntaryCtxtSwitches uint64
+ // Number of involuntary context switches.
+ NonVoluntaryCtxtSwitches uint64
+}
+
+// NewStatus returns the current status information of the process.
+func (p Proc) NewStatus() (ProcStatus, error) {
+ f, err := os.Open(p.path("status"))
+ if err != nil {
+ return ProcStatus{}, err
+ }
+ defer f.Close()
+
+ data, err := ioutil.ReadAll(f)
+ if err != nil {
+ return ProcStatus{}, err
+ }
+
+ s := ProcStatus{PID: p.PID}
+
+ lines := strings.Split(string(data), "\n")
+ for _, line := range lines {
+ if !bytes.Contains([]byte(line), []byte(":")) {
+ continue
+ }
+
+ kv := strings.SplitN(line, ":", 2)
+
+ // removes spaces
+ k := string(strings.TrimSpace(kv[0]))
+ v := string(strings.TrimSpace(kv[1]))
+ // removes "kB"
+ v = string(bytes.Trim([]byte(v), " kB"))
+
+ // value to int when possible
+ // we can skip error check here, 'cause vKBytes is not used when value is a string
+ vKBytes, _ := strconv.ParseUint(v, 10, 64)
+ // convert kB to B
+ vBytes := vKBytes * 1024
+
+ s.fillStatus(k, v, vKBytes, vBytes)
+ }
+
+ return s, nil
+}
+
+func (s *ProcStatus) fillStatus(k string, vString string, vUint uint64, vUintBytes uint64) {
+ switch k {
+ case "Name":
+ s.Name = vString
+ case "VmPeak":
+ s.VmPeak = vUintBytes
+ case "VmSize":
+ s.VmSize = vUintBytes
+ case "VmLck":
+ s.VmLck = vUintBytes
+ case "VmPin":
+ s.VmPin = vUintBytes
+ case "VmHWM":
+ s.VmHWM = vUintBytes
+ case "VmRSS":
+ s.VmRSS = vUintBytes
+ case "RssAnon":
+ s.RssAnon = vUintBytes
+ case "RssFile":
+ s.RssFile = vUintBytes
+ case "RssShmem":
+ s.RssShmem = vUintBytes
+ case "VmData":
+ s.VmData = vUintBytes
+ case "VmStk":
+ s.VmStk = vUintBytes
+ case "VmExe":
+ s.VmExe = vUintBytes
+ case "VmLib":
+ s.VmLib = vUintBytes
+ case "VmPTE":
+ s.VmPTE = vUintBytes
+ case "VmPMD":
+ s.VmPMD = vUintBytes
+ case "VmSwap":
+ s.VmSwap = vUintBytes
+ case "HugetlbPages":
+ s.HugetlbPages = vUintBytes
+ case "voluntary_ctxt_switches":
+ s.VoluntaryCtxtSwitches = vUint
+ case "nonvoluntary_ctxt_switches":
+ s.NonVoluntaryCtxtSwitches = vUint
+ }
+}
+
+// TotalCtxtSwitches returns the total context switch.
+func (s ProcStatus) TotalCtxtSwitches() uint64 {
+ return s.VoluntaryCtxtSwitches + s.NonVoluntaryCtxtSwitches
+}
diff --git a/vendor/github.com/prometheus/procfs/stat.go b/vendor/github.com/prometheus/procfs/stat.go
new file mode 100644
index 0000000..6661ee0
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/stat.go
@@ -0,0 +1,244 @@
+// Copyright 2018 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package procfs
+
+import (
+ "bufio"
+ "fmt"
+ "io"
+ "os"
+ "strconv"
+ "strings"
+
+ "github.com/prometheus/procfs/internal/fs"
+)
+
+// CPUStat shows how much time the cpu spend in various stages.
+type CPUStat struct {
+ User float64
+ Nice float64
+ System float64
+ Idle float64
+ Iowait float64
+ IRQ float64
+ SoftIRQ float64
+ Steal float64
+ Guest float64
+ GuestNice float64
+}
+
+// SoftIRQStat represent the softirq statistics as exported in the procfs stat file.
+// A nice introduction can be found at https://0xax.gitbooks.io/linux-insides/content/interrupts/interrupts-9.html
+// It is possible to get per-cpu stats by reading /proc/softirqs
+type SoftIRQStat struct {
+ Hi uint64
+ Timer uint64
+ NetTx uint64
+ NetRx uint64
+ Block uint64
+ BlockIoPoll uint64
+ Tasklet uint64
+ Sched uint64
+ Hrtimer uint64
+ Rcu uint64
+}
+
+// Stat represents kernel/system statistics.
+type Stat struct {
+ // Boot time in seconds since the Epoch.
+ BootTime uint64
+ // Summed up cpu statistics.
+ CPUTotal CPUStat
+ // Per-CPU statistics.
+ CPU []CPUStat
+ // Number of times interrupts were handled, which contains numbered and unnumbered IRQs.
+ IRQTotal uint64
+ // Number of times a numbered IRQ was triggered.
+ IRQ []uint64
+ // Number of times a context switch happened.
+ ContextSwitches uint64
+ // Number of times a process was created.
+ ProcessCreated uint64
+ // Number of processes currently running.
+ ProcessesRunning uint64
+ // Number of processes currently blocked (waiting for IO).
+ ProcessesBlocked uint64
+ // Number of times a softirq was scheduled.
+ SoftIRQTotal uint64
+ // Detailed softirq statistics.
+ SoftIRQ SoftIRQStat
+}
+
+// Parse a cpu statistics line and returns the CPUStat struct plus the cpu id (or -1 for the overall sum).
+func parseCPUStat(line string) (CPUStat, int64, error) {
+ cpuStat := CPUStat{}
+ var cpu string
+
+ count, err := fmt.Sscanf(line, "%s %f %f %f %f %f %f %f %f %f %f",
+ &cpu,
+ &cpuStat.User, &cpuStat.Nice, &cpuStat.System, &cpuStat.Idle,
+ &cpuStat.Iowait, &cpuStat.IRQ, &cpuStat.SoftIRQ, &cpuStat.Steal,
+ &cpuStat.Guest, &cpuStat.GuestNice)
+
+ if err != nil && err != io.EOF {
+ return CPUStat{}, -1, fmt.Errorf("couldn't parse %s (cpu): %s", line, err)
+ }
+ if count == 0 {
+ return CPUStat{}, -1, fmt.Errorf("couldn't parse %s (cpu): 0 elements parsed", line)
+ }
+
+ cpuStat.User /= userHZ
+ cpuStat.Nice /= userHZ
+ cpuStat.System /= userHZ
+ cpuStat.Idle /= userHZ
+ cpuStat.Iowait /= userHZ
+ cpuStat.IRQ /= userHZ
+ cpuStat.SoftIRQ /= userHZ
+ cpuStat.Steal /= userHZ
+ cpuStat.Guest /= userHZ
+ cpuStat.GuestNice /= userHZ
+
+ if cpu == "cpu" {
+ return cpuStat, -1, nil
+ }
+
+ cpuID, err := strconv.ParseInt(cpu[3:], 10, 64)
+ if err != nil {
+ return CPUStat{}, -1, fmt.Errorf("couldn't parse %s (cpu/cpuid): %s", line, err)
+ }
+
+ return cpuStat, cpuID, nil
+}
+
+// Parse a softirq line.
+func parseSoftIRQStat(line string) (SoftIRQStat, uint64, error) {
+ softIRQStat := SoftIRQStat{}
+ var total uint64
+ var prefix string
+
+ _, err := fmt.Sscanf(line, "%s %d %d %d %d %d %d %d %d %d %d %d",
+ &prefix, &total,
+ &softIRQStat.Hi, &softIRQStat.Timer, &softIRQStat.NetTx, &softIRQStat.NetRx,
+ &softIRQStat.Block, &softIRQStat.BlockIoPoll,
+ &softIRQStat.Tasklet, &softIRQStat.Sched,
+ &softIRQStat.Hrtimer, &softIRQStat.Rcu)
+
+ if err != nil {
+ return SoftIRQStat{}, 0, fmt.Errorf("couldn't parse %s (softirq): %s", line, err)
+ }
+
+ return softIRQStat, total, nil
+}
+
+// NewStat returns information about current cpu/process statistics.
+// See https://www.kernel.org/doc/Documentation/filesystems/proc.txt
+//
+// Deprecated: use fs.Stat() instead
+func NewStat() (Stat, error) {
+ fs, err := NewFS(fs.DefaultProcMountPoint)
+ if err != nil {
+ return Stat{}, err
+ }
+ return fs.Stat()
+}
+
+// NewStat returns information about current cpu/process statistics.
+// See https://www.kernel.org/doc/Documentation/filesystems/proc.txt
+//
+// Deprecated: use fs.Stat() instead
+func (fs FS) NewStat() (Stat, error) {
+ return fs.Stat()
+}
+
+// Stat returns information about current cpu/process statistics.
+// See https://www.kernel.org/doc/Documentation/filesystems/proc.txt
+func (fs FS) Stat() (Stat, error) {
+
+ f, err := os.Open(fs.proc.Path("stat"))
+ if err != nil {
+ return Stat{}, err
+ }
+ defer f.Close()
+
+ stat := Stat{}
+
+ scanner := bufio.NewScanner(f)
+ for scanner.Scan() {
+ line := scanner.Text()
+ parts := strings.Fields(scanner.Text())
+ // require at least <key> <value>
+ if len(parts) < 2 {
+ continue
+ }
+ switch {
+ case parts[0] == "btime":
+ if stat.BootTime, err = strconv.ParseUint(parts[1], 10, 64); err != nil {
+ return Stat{}, fmt.Errorf("couldn't parse %s (btime): %s", parts[1], err)
+ }
+ case parts[0] == "intr":
+ if stat.IRQTotal, err = strconv.ParseUint(parts[1], 10, 64); err != nil {
+ return Stat{}, fmt.Errorf("couldn't parse %s (intr): %s", parts[1], err)
+ }
+ numberedIRQs := parts[2:]
+ stat.IRQ = make([]uint64, len(numberedIRQs))
+ for i, count := range numberedIRQs {
+ if stat.IRQ[i], err = strconv.ParseUint(count, 10, 64); err != nil {
+ return Stat{}, fmt.Errorf("couldn't parse %s (intr%d): %s", count, i, err)
+ }
+ }
+ case parts[0] == "ctxt":
+ if stat.ContextSwitches, err = strconv.ParseUint(parts[1], 10, 64); err != nil {
+ return Stat{}, fmt.Errorf("couldn't parse %s (ctxt): %s", parts[1], err)
+ }
+ case parts[0] == "processes":
+ if stat.ProcessCreated, err = strconv.ParseUint(parts[1], 10, 64); err != nil {
+ return Stat{}, fmt.Errorf("couldn't parse %s (processes): %s", parts[1], err)
+ }
+ case parts[0] == "procs_running":
+ if stat.ProcessesRunning, err = strconv.ParseUint(parts[1], 10, 64); err != nil {
+ return Stat{}, fmt.Errorf("couldn't parse %s (procs_running): %s", parts[1], err)
+ }
+ case parts[0] == "procs_blocked":
+ if stat.ProcessesBlocked, err = strconv.ParseUint(parts[1], 10, 64); err != nil {
+ return Stat{}, fmt.Errorf("couldn't parse %s (procs_blocked): %s", parts[1], err)
+ }
+ case parts[0] == "softirq":
+ softIRQStats, total, err := parseSoftIRQStat(line)
+ if err != nil {
+ return Stat{}, err
+ }
+ stat.SoftIRQTotal = total
+ stat.SoftIRQ = softIRQStats
+ case strings.HasPrefix(parts[0], "cpu"):
+ cpuStat, cpuID, err := parseCPUStat(line)
+ if err != nil {
+ return Stat{}, err
+ }
+ if cpuID == -1 {
+ stat.CPUTotal = cpuStat
+ } else {
+ for int64(len(stat.CPU)) <= cpuID {
+ stat.CPU = append(stat.CPU, CPUStat{})
+ }
+ stat.CPU[cpuID] = cpuStat
+ }
+ }
+ }
+
+ if err := scanner.Err(); err != nil {
+ return Stat{}, fmt.Errorf("couldn't parse %s: %s", f.Name(), err)
+ }
+
+ return stat, nil
+}
diff --git a/vendor/github.com/prometheus/procfs/ttar b/vendor/github.com/prometheus/procfs/ttar
new file mode 100644
index 0000000..19ef02b
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/ttar
@@ -0,0 +1,413 @@
+#!/usr/bin/env bash
+
+# Purpose: plain text tar format
+# Limitations: - only suitable for text files, directories, and symlinks
+# - stores only filename, content, and mode
+# - not designed for untrusted input
+#
+# Note: must work with bash version 3.2 (macOS)
+
+# Copyright 2017 Roger Luethi
+#
+# 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.
+
+set -o errexit -o nounset
+
+# Sanitize environment (for instance, standard sorting of glob matches)
+export LC_ALL=C
+
+path=""
+CMD=""
+ARG_STRING="$*"
+
+#------------------------------------------------------------------------------
+# Not all sed implementations can work on null bytes. In order to make ttar
+# work out of the box on macOS, use Python as a stream editor.
+
+USE_PYTHON=0
+
+PYTHON_CREATE_FILTER=$(cat << 'PCF'
+#!/usr/bin/env python
+
+import re
+import sys
+
+for line in sys.stdin:
+ line = re.sub(r'EOF', r'\EOF', line)
+ line = re.sub(r'NULLBYTE', r'\NULLBYTE', line)
+ line = re.sub('\x00', r'NULLBYTE', line)
+ sys.stdout.write(line)
+PCF
+)
+
+PYTHON_EXTRACT_FILTER=$(cat << 'PEF'
+#!/usr/bin/env python
+
+import re
+import sys
+
+for line in sys.stdin:
+ line = re.sub(r'(?<!\\)NULLBYTE', '\x00', line)
+ line = re.sub(r'\\NULLBYTE', 'NULLBYTE', line)
+ line = re.sub(r'([^\\])EOF', r'\1', line)
+ line = re.sub(r'\\EOF', 'EOF', line)
+ sys.stdout.write(line)
+PEF
+)
+
+function test_environment {
+ if [[ "$(echo "a" | sed 's/a/\x0/' | wc -c)" -ne 2 ]]; then
+ echo "WARNING sed unable to handle null bytes, using Python (slow)."
+ if ! which python >/dev/null; then
+ echo "ERROR Python not found. Aborting."
+ exit 2
+ fi
+ USE_PYTHON=1
+ fi
+}
+
+#------------------------------------------------------------------------------
+
+function usage {
+ bname=$(basename "$0")
+ cat << USAGE
+Usage: $bname [-C <DIR>] -c -f <ARCHIVE> <FILE...> (create archive)
+ $bname -t -f <ARCHIVE> (list archive contents)
+ $bname [-C <DIR>] -x -f <ARCHIVE> (extract archive)
+
+Options:
+ -C <DIR> (change directory)
+ -v (verbose)
+ --recursive-unlink (recursively delete existing directory if path
+ collides with file or directory to extract)
+
+Example: Change to sysfs directory, create ttar file from fixtures directory
+ $bname -C sysfs -c -f sysfs/fixtures.ttar fixtures/
+USAGE
+exit "$1"
+}
+
+function vecho {
+ if [ "${VERBOSE:-}" == "yes" ]; then
+ echo >&7 "$@"
+ fi
+}
+
+function set_cmd {
+ if [ -n "$CMD" ]; then
+ echo "ERROR: more than one command given"
+ echo
+ usage 2
+ fi
+ CMD=$1
+}
+
+unset VERBOSE
+unset RECURSIVE_UNLINK
+
+while getopts :cf:-:htxvC: opt; do
+ case $opt in
+ c)
+ set_cmd "create"
+ ;;
+ f)
+ ARCHIVE=$OPTARG
+ ;;
+ h)
+ usage 0
+ ;;
+ t)
+ set_cmd "list"
+ ;;
+ x)
+ set_cmd "extract"
+ ;;
+ v)
+ VERBOSE=yes
+ exec 7>&1
+ ;;
+ C)
+ CDIR=$OPTARG
+ ;;
+ -)
+ case $OPTARG in
+ recursive-unlink)
+ RECURSIVE_UNLINK="yes"
+ ;;
+ *)
+ echo -e "Error: invalid option -$OPTARG"
+ echo
+ usage 1
+ ;;
+ esac
+ ;;
+ *)
+ echo >&2 "ERROR: invalid option -$OPTARG"
+ echo
+ usage 1
+ ;;
+ esac
+done
+
+# Remove processed options from arguments
+shift $(( OPTIND - 1 ));
+
+if [ "${CMD:-}" == "" ]; then
+ echo >&2 "ERROR: no command given"
+ echo
+ usage 1
+elif [ "${ARCHIVE:-}" == "" ]; then
+ echo >&2 "ERROR: no archive name given"
+ echo
+ usage 1
+fi
+
+function list {
+ local path=""
+ local size=0
+ local line_no=0
+ local ttar_file=$1
+ if [ -n "${2:-}" ]; then
+ echo >&2 "ERROR: too many arguments."
+ echo
+ usage 1
+ fi
+ if [ ! -e "$ttar_file" ]; then
+ echo >&2 "ERROR: file not found ($ttar_file)"
+ echo
+ usage 1
+ fi
+ while read -r line; do
+ line_no=$(( line_no + 1 ))
+ if [ $size -gt 0 ]; then
+ size=$(( size - 1 ))
+ continue
+ fi
+ if [[ $line =~ ^Path:\ (.*)$ ]]; then
+ path=${BASH_REMATCH[1]}
+ elif [[ $line =~ ^Lines:\ (.*)$ ]]; then
+ size=${BASH_REMATCH[1]}
+ echo "$path"
+ elif [[ $line =~ ^Directory:\ (.*)$ ]]; then
+ path=${BASH_REMATCH[1]}
+ echo "$path/"
+ elif [[ $line =~ ^SymlinkTo:\ (.*)$ ]]; then
+ echo "$path -> ${BASH_REMATCH[1]}"
+ fi
+ done < "$ttar_file"
+}
+
+function extract {
+ local path=""
+ local size=0
+ local line_no=0
+ local ttar_file=$1
+ if [ -n "${2:-}" ]; then
+ echo >&2 "ERROR: too many arguments."
+ echo
+ usage 1
+ fi
+ if [ ! -e "$ttar_file" ]; then
+ echo >&2 "ERROR: file not found ($ttar_file)"
+ echo
+ usage 1
+ fi
+ while IFS= read -r line; do
+ line_no=$(( line_no + 1 ))
+ local eof_without_newline
+ if [ "$size" -gt 0 ]; then
+ if [[ "$line" =~ [^\\]EOF ]]; then
+ # An EOF not preceded by a backslash indicates that the line
+ # does not end with a newline
+ eof_without_newline=1
+ else
+ eof_without_newline=0
+ fi
+ # Replace NULLBYTE with null byte if at beginning of line
+ # Replace NULLBYTE with null byte unless preceded by backslash
+ # Remove one backslash in front of NULLBYTE (if any)
+ # Remove EOF unless preceded by backslash
+ # Remove one backslash in front of EOF
+ if [ $USE_PYTHON -eq 1 ]; then
+ echo -n "$line" | python -c "$PYTHON_EXTRACT_FILTER" >> "$path"
+ else
+ # The repeated pattern makes up for sed's lack of negative
+ # lookbehind assertions (for consecutive null bytes).
+ echo -n "$line" | \
+ sed -e 's/^NULLBYTE/\x0/g;
+ s/\([^\\]\)NULLBYTE/\1\x0/g;
+ s/\([^\\]\)NULLBYTE/\1\x0/g;
+ s/\\NULLBYTE/NULLBYTE/g;
+ s/\([^\\]\)EOF/\1/g;
+ s/\\EOF/EOF/g;
+ ' >> "$path"
+ fi
+ if [[ "$eof_without_newline" -eq 0 ]]; then
+ echo >> "$path"
+ fi
+ size=$(( size - 1 ))
+ continue
+ fi
+ if [[ $line =~ ^Path:\ (.*)$ ]]; then
+ path=${BASH_REMATCH[1]}
+ if [ -L "$path" ]; then
+ rm "$path"
+ elif [ -d "$path" ]; then
+ if [ "${RECURSIVE_UNLINK:-}" == "yes" ]; then
+ rm -r "$path"
+ else
+ # Safe because symlinks to directories are dealt with above
+ rmdir "$path"
+ fi
+ elif [ -e "$path" ]; then
+ rm "$path"
+ fi
+ elif [[ $line =~ ^Lines:\ (.*)$ ]]; then
+ size=${BASH_REMATCH[1]}
+ # Create file even if it is zero-length.
+ touch "$path"
+ vecho " $path"
+ elif [[ $line =~ ^Mode:\ (.*)$ ]]; then
+ mode=${BASH_REMATCH[1]}
+ chmod "$mode" "$path"
+ vecho "$mode"
+ elif [[ $line =~ ^Directory:\ (.*)$ ]]; then
+ path=${BASH_REMATCH[1]}
+ mkdir -p "$path"
+ vecho " $path/"
+ elif [[ $line =~ ^SymlinkTo:\ (.*)$ ]]; then
+ ln -s "${BASH_REMATCH[1]}" "$path"
+ vecho " $path -> ${BASH_REMATCH[1]}"
+ elif [[ $line =~ ^# ]]; then
+ # Ignore comments between files
+ continue
+ else
+ echo >&2 "ERROR: Unknown keyword on line $line_no: $line"
+ exit 1
+ fi
+ done < "$ttar_file"
+}
+
+function div {
+ echo "# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -" \
+ "- - - - - -"
+}
+
+function get_mode {
+ local mfile=$1
+ if [ -z "${STAT_OPTION:-}" ]; then
+ if stat -c '%a' "$mfile" >/dev/null 2>&1; then
+ # GNU stat
+ STAT_OPTION='-c'
+ STAT_FORMAT='%a'
+ else
+ # BSD stat
+ STAT_OPTION='-f'
+ # Octal output, user/group/other (omit file type, sticky bit)
+ STAT_FORMAT='%OLp'
+ fi
+ fi
+ stat "${STAT_OPTION}" "${STAT_FORMAT}" "$mfile"
+}
+
+function _create {
+ shopt -s nullglob
+ local mode
+ local eof_without_newline
+ while (( "$#" )); do
+ file=$1
+ if [ -L "$file" ]; then
+ echo "Path: $file"
+ symlinkTo=$(readlink "$file")
+ echo "SymlinkTo: $symlinkTo"
+ vecho " $file -> $symlinkTo"
+ div
+ elif [ -d "$file" ]; then
+ # Strip trailing slash (if there is one)
+ file=${file%/}
+ echo "Directory: $file"
+ mode=$(get_mode "$file")
+ echo "Mode: $mode"
+ vecho "$mode $file/"
+ div
+ # Find all files and dirs, including hidden/dot files
+ for x in "$file/"{*,.[^.]*}; do
+ _create "$x"
+ done
+ elif [ -f "$file" ]; then
+ echo "Path: $file"
+ lines=$(wc -l "$file"|awk '{print $1}')
+ eof_without_newline=0
+ if [[ "$(wc -c "$file"|awk '{print $1}')" -gt 0 ]] && \
+ [[ "$(tail -c 1 "$file" | wc -l)" -eq 0 ]]; then
+ eof_without_newline=1
+ lines=$((lines+1))
+ fi
+ echo "Lines: $lines"
+ # Add backslash in front of EOF
+ # Add backslash in front of NULLBYTE
+ # Replace null byte with NULLBYTE
+ if [ $USE_PYTHON -eq 1 ]; then
+ < "$file" python -c "$PYTHON_CREATE_FILTER"
+ else
+ < "$file" \
+ sed 's/EOF/\\EOF/g;
+ s/NULLBYTE/\\NULLBYTE/g;
+ s/\x0/NULLBYTE/g;
+ '
+ fi
+ if [[ "$eof_without_newline" -eq 1 ]]; then
+ # Finish line with EOF to indicate that the original line did
+ # not end with a linefeed
+ echo "EOF"
+ fi
+ mode=$(get_mode "$file")
+ echo "Mode: $mode"
+ vecho "$mode $file"
+ div
+ else
+ echo >&2 "ERROR: file not found ($file in $(pwd))"
+ exit 2
+ fi
+ shift
+ done
+}
+
+function create {
+ ttar_file=$1
+ shift
+ if [ -z "${1:-}" ]; then
+ echo >&2 "ERROR: missing arguments."
+ echo
+ usage 1
+ fi
+ if [ -e "$ttar_file" ]; then
+ rm "$ttar_file"
+ fi
+ exec > "$ttar_file"
+ echo "# Archive created by ttar $ARG_STRING"
+ _create "$@"
+}
+
+test_environment
+
+if [ -n "${CDIR:-}" ]; then
+ if [[ "$ARCHIVE" != /* ]]; then
+ # Relative path: preserve the archive's location before changing
+ # directory
+ ARCHIVE="$(pwd)/$ARCHIVE"
+ fi
+ cd "$CDIR"
+fi
+
+"$CMD" "$ARCHIVE" "$@"
diff --git a/vendor/github.com/prometheus/procfs/xfrm.go b/vendor/github.com/prometheus/procfs/xfrm.go
new file mode 100644
index 0000000..30aa417
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/xfrm.go
@@ -0,0 +1,187 @@
+// Copyright 2017 Prometheus Team
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package procfs
+
+import (
+ "bufio"
+ "fmt"
+ "os"
+ "strconv"
+ "strings"
+)
+
+// XfrmStat models the contents of /proc/net/xfrm_stat.
+type XfrmStat struct {
+ // All errors which are not matched by other
+ XfrmInError int
+ // No buffer is left
+ XfrmInBufferError int
+ // Header Error
+ XfrmInHdrError int
+ // No state found
+ // i.e. either inbound SPI, address, or IPSEC protocol at SA is wrong
+ XfrmInNoStates int
+ // Transformation protocol specific error
+ // e.g. SA Key is wrong
+ XfrmInStateProtoError int
+ // Transformation mode specific error
+ XfrmInStateModeError int
+ // Sequence error
+ // e.g. sequence number is out of window
+ XfrmInStateSeqError int
+ // State is expired
+ XfrmInStateExpired int
+ // State has mismatch option
+ // e.g. UDP encapsulation type is mismatched
+ XfrmInStateMismatch int
+ // State is invalid
+ XfrmInStateInvalid int
+ // No matching template for states
+ // e.g. Inbound SAs are correct but SP rule is wrong
+ XfrmInTmplMismatch int
+ // No policy is found for states
+ // e.g. Inbound SAs are correct but no SP is found
+ XfrmInNoPols int
+ // Policy discards
+ XfrmInPolBlock int
+ // Policy error
+ XfrmInPolError int
+ // All errors which are not matched by others
+ XfrmOutError int
+ // Bundle generation error
+ XfrmOutBundleGenError int
+ // Bundle check error
+ XfrmOutBundleCheckError int
+ // No state was found
+ XfrmOutNoStates int
+ // Transformation protocol specific error
+ XfrmOutStateProtoError int
+ // Transportation mode specific error
+ XfrmOutStateModeError int
+ // Sequence error
+ // i.e sequence number overflow
+ XfrmOutStateSeqError int
+ // State is expired
+ XfrmOutStateExpired int
+ // Policy discads
+ XfrmOutPolBlock int
+ // Policy is dead
+ XfrmOutPolDead int
+ // Policy Error
+ XfrmOutPolError int
+ XfrmFwdHdrError int
+ XfrmOutStateInvalid int
+ XfrmAcquireError int
+}
+
+// NewXfrmStat reads the xfrm_stat statistics.
+func NewXfrmStat() (XfrmStat, error) {
+ fs, err := NewFS(DefaultMountPoint)
+ if err != nil {
+ return XfrmStat{}, err
+ }
+
+ return fs.NewXfrmStat()
+}
+
+// NewXfrmStat reads the xfrm_stat statistics from the 'proc' filesystem.
+func (fs FS) NewXfrmStat() (XfrmStat, error) {
+ file, err := os.Open(fs.proc.Path("net/xfrm_stat"))
+ if err != nil {
+ return XfrmStat{}, err
+ }
+ defer file.Close()
+
+ var (
+ x = XfrmStat{}
+ s = bufio.NewScanner(file)
+ )
+
+ for s.Scan() {
+ fields := strings.Fields(s.Text())
+
+ if len(fields) != 2 {
+ return XfrmStat{}, fmt.Errorf(
+ "couldn't parse %s line %s", file.Name(), s.Text())
+ }
+
+ name := fields[0]
+ value, err := strconv.Atoi(fields[1])
+ if err != nil {
+ return XfrmStat{}, err
+ }
+
+ switch name {
+ case "XfrmInError":
+ x.XfrmInError = value
+ case "XfrmInBufferError":
+ x.XfrmInBufferError = value
+ case "XfrmInHdrError":
+ x.XfrmInHdrError = value
+ case "XfrmInNoStates":
+ x.XfrmInNoStates = value
+ case "XfrmInStateProtoError":
+ x.XfrmInStateProtoError = value
+ case "XfrmInStateModeError":
+ x.XfrmInStateModeError = value
+ case "XfrmInStateSeqError":
+ x.XfrmInStateSeqError = value
+ case "XfrmInStateExpired":
+ x.XfrmInStateExpired = value
+ case "XfrmInStateInvalid":
+ x.XfrmInStateInvalid = value
+ case "XfrmInTmplMismatch":
+ x.XfrmInTmplMismatch = value
+ case "XfrmInNoPols":
+ x.XfrmInNoPols = value
+ case "XfrmInPolBlock":
+ x.XfrmInPolBlock = value
+ case "XfrmInPolError":
+ x.XfrmInPolError = value
+ case "XfrmOutError":
+ x.XfrmOutError = value
+ case "XfrmInStateMismatch":
+ x.XfrmInStateMismatch = value
+ case "XfrmOutBundleGenError":
+ x.XfrmOutBundleGenError = value
+ case "XfrmOutBundleCheckError":
+ x.XfrmOutBundleCheckError = value
+ case "XfrmOutNoStates":
+ x.XfrmOutNoStates = value
+ case "XfrmOutStateProtoError":
+ x.XfrmOutStateProtoError = value
+ case "XfrmOutStateModeError":
+ x.XfrmOutStateModeError = value
+ case "XfrmOutStateSeqError":
+ x.XfrmOutStateSeqError = value
+ case "XfrmOutStateExpired":
+ x.XfrmOutStateExpired = value
+ case "XfrmOutPolBlock":
+ x.XfrmOutPolBlock = value
+ case "XfrmOutPolDead":
+ x.XfrmOutPolDead = value
+ case "XfrmOutPolError":
+ x.XfrmOutPolError = value
+ case "XfrmFwdHdrError":
+ x.XfrmFwdHdrError = value
+ case "XfrmOutStateInvalid":
+ x.XfrmOutStateInvalid = value
+ case "XfrmAcquireError":
+ x.XfrmAcquireError = value
+ }
+
+ }
+
+ return x, s.Err()
+}