Add source code

.github/workflows/golangci-lint.yml

@@ -0,0 +1,30 @@
+# This action is synced from https://github.com/prometheus/prometheus
+name: golangci-lint
+on:
+  push:
+    paths:
+      - "go.sum"
+      - "go.mod"
+      - "**.go"
+      - "scripts/errcheck_excludes.txt"
+      - ".github/workflows/golangci-lint.yml"
+      - ".golangci.yml"
+  pull_request:
+
+jobs:
+  golangci:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Install Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: 1.20.x
+
+      - name: Lint
+        uses: golangci/golangci-lint-action@v3
+        with:
+          version: v1.54.2

.gitignore

@@ -19,3 +19,12 @@
 
 # Go workspace file
 go.work
+
+# Ignore fixtures
+collector/fixtures/sys
+
+# Ignore binary
+**/*batchjob_exporter
+
+# Ignore scripts
+run.sh

.golangci.yml

@@ -0,0 +1,33 @@
+linters:
+  enable:
+    - misspell
+    - revive
+  disable:
+    # Disable soon to deprecated[1] linters that lead to false
+    # positives when build tags disable certain files[2]
+    # 1: https://github.com/golangci/golangci-lint/issues/1841
+    # 2: https://github.com/prometheus/node_exporter/issues/1545
+    - deadcode
+    - unused
+    - structcheck
+    - varcheck
+
+issues:
+  exclude-rules:
+    - path: _test.go
+      linters:
+        - errcheck
+
+linters-settings:
+  errcheck:
+    exclude-functions:
+      # Used in HTTP handlers, any error is handled by the server itself.
+      - (net/http.ResponseWriter).Write
+      # Never check for logger errors.
+      - (github.com/go-kit/log.Logger).Log
+  revive:
+    rules:
+      # https://github.com/mgechev/revive/blob/master/RULES_DESCRIPTIONS.md#unused-parameter
+      - name: unused-parameter
+        severity: warning
+        disabled: true

.promu-cgo.yml

@@ -0,0 +1,27 @@
+go:
+    # Whenever the Go version is updated here, .circle/config.yml and
+    # .promu.yml should also be updated.
+    version: 1.21
+    cgo: true
+repository:
+    path: github.com/mahendrapaipuri/batchjob_exporter
+build:
+    binaries:
+        - name: batchjob_exporter
+    flags: -a -tags 'netgo osusergo static_build'
+    ldflags: |
+        -X github.com/prometheus/common/version.Version={{.Version}}
+        -X github.com/prometheus/common/version.Revision={{.Revision}}
+        -X github.com/prometheus/common/version.Branch={{.Branch}}
+        -X github.com/prometheus/common/version.BuildUser={{user}}@{{host}}
+        -X github.com/prometheus/common/version.BuildDate={{date "20060102-15:04:05"}}
+tarball:
+    files:
+        - LICENSE
+        - NOTICE
+crossbuild:
+    platforms:
+        - darwin/amd64
+        - darwin/arm64
+        - netbsd/amd64
+        - netbsd/386

.promu.yml

@@ -0,0 +1,24 @@
+go:
+    # Whenever the Go version is updated here, .circle/config.yml and
+    # .promu-cgo.yml should also be updated.
+    version: 1.21
+repository:
+    path: github.com/mahendrapaipuri/batchjob_exporter
+build:
+    binaries:
+        - name: batchjob_exporter
+    flags: -a -tags 'netgo osusergo static_build'
+    ldflags: |
+        -X github.com/prometheus/common/version.Version={{.Version}}
+        -X github.com/prometheus/common/version.Revision={{.Revision}}
+        -X github.com/prometheus/common/version.Branch={{.Branch}}
+        -X github.com/prometheus/common/version.BuildUser={{user}}@{{host}}
+        -X github.com/prometheus/common/version.BuildDate={{date "20060102-15:04:05"}}
+tarball:
+    files:
+        - LICENSE
+        - NOTICE
+crossbuild:
+    platforms:
+        - linux
+        - openbsd/amd64

.yamllint

@@ -0,0 +1,23 @@
+---
+extends: default
+
+rules:
+  braces:
+    max-spaces-inside: 1
+    level: error
+  brackets:
+    max-spaces-inside: 1
+    level: error
+  commas: disable
+  comments: disable
+  comments-indentation: disable
+  document-start: disable
+  indentation:
+    spaces: consistent
+    indent-sequences: consistent
+  key-duplicates:
+    ignore: |
+      config/testdata/section_key_dup.bad.yml
+  line-length: disable
+  truthy:
+    check-keys: false

Makefile

@@ -0,0 +1,134 @@
+# Nicked from node_exporter repo and modified to current exporter
+
+# Ensure that 'all' is the default target otherwise it will be the first target from Makefile.common.
+all::
+
+# Needs to be defined before including Makefile.common to auto-generate targets
+DOCKER_ARCHS ?= amd64 armv7 arm64 ppc64le s390x
+
+include Makefile.common
+
+PROMTOOL_VERSION ?= 2.30.0
+PROMTOOL_URL     ?= https://github.com/prometheus/prometheus/releases/download/v$(PROMTOOL_VERSION)/prometheus-$(PROMTOOL_VERSION).$(GO_BUILD_PLATFORM).tar.gz
+PROMTOOL         ?= $(FIRST_GOPATH)/bin/promtool
+
+DOCKER_IMAGE_NAME       ?= batchjob-exporter
+MACH                    ?= $(shell uname -m)
+
+STATICCHECK_IGNORE =
+
+ifeq ($(GOHOSTOS), linux)
+	test-e2e := test-e2e
+else
+	test-e2e := skip-test-e2e
+endif
+
+# Use CGO for non-Linux builds.
+ifeq ($(GOOS), linux)
+	PROMU_CONF ?= .promu.yml
+else
+	ifndef GOOS
+		ifeq ($(GOHOSTOS), linux)
+			PROMU_CONF ?= .promu.yml
+		else
+			PROMU_CONF ?= .promu-cgo.yml
+		endif
+	else
+		# Do not use CGO for openbsd/amd64 builds
+		ifeq ($(GOOS), openbsd)
+			ifeq ($(GOARCH), amd64)
+				PROMU_CONF ?= .promu.yml
+			else
+				PROMU_CONF ?= .promu-cgo.yml
+			endif
+		else
+			PROMU_CONF ?= .promu-cgo.yml
+		endif
+	endif
+endif
+
+PROMU := $(FIRST_GOPATH)/bin/promu --config $(PROMU_CONF)
+
+e2e-out-64k-page = collector/fixtures/e2e-64k-page-output.txt
+e2e-out = collector/fixtures/e2e-output.txt
+ifeq ($(MACH), ppc64le)
+	e2e-out = $(e2e-out-64k-page)
+endif
+ifeq ($(MACH), aarch64)
+	e2e-out = $(e2e-out-64k-page)
+endif
+
+# 64bit -> 32bit mapping for cross-checking. At least for amd64/386, the 64bit CPU can execute 32bit code but not the other way around, so we don't support cross-testing upwards.
+cross-test = skip-test-32bit
+define goarch_pair
+	ifeq ($$(GOHOSTOS),linux)
+		ifeq ($$(GOHOSTARCH),$1)
+			GOARCH_CROSS = $2
+			cross-test = test-32bit
+		endif
+	endif
+endef
+
+# By default, "cross" test with ourselves to cover unknown pairings.
+$(eval $(call goarch_pair,amd64,386))
+$(eval $(call goarch_pair,mips64,mips))
+$(eval $(call goarch_pair,mips64el,mipsel))
+
+all:: vet checkmetrics checkrules common-all $(cross-test) $(test-e2e)
+
+.PHONY: test
+test: collector/fixtures/sys/.unpacked 
+	@echo ">> running tests"
+	$(GO) test -short $(test-flags) $(pkgs)
+
+.PHONY: test-32bit
+test-32bit: collector/fixtures/sys/.unpacked 
+	@echo ">> running tests in 32-bit mode"
+	@env GOARCH=$(GOARCH_CROSS) $(GO) test $(pkgs)
+
+.PHONY: skip-test-32bit
+skip-test-32bit:
+	@echo ">> SKIP running tests in 32-bit mode: not supported on $(GOHOSTOS)/$(GOHOSTARCH)"
+
+%/.unpacked: %.ttar
+	@echo ">> extracting fixtures"
+	if [ -d $(dir $@) ] ; then rm -rf $(dir $@) ; fi
+	./ttar -C $(dir $*) -x -f $*.ttar
+	touch $@
+
+update_fixtures:
+	rm -vf collector/fixtures/sys/.unpacked
+	./ttar -C collector/fixtures -c -f collector/fixtures/sys.ttar sys
+
+
+.PHONY: test-e2e
+test-e2e: build collector/fixtures/sys/.unpacked 
+	@echo ">> running end-to-end tests"
+	./end-to-end-test.sh
+
+.PHONY: skip-test-e2e
+skip-test-e2e:
+	@echo ">> SKIP running end-to-end tests on $(GOHOSTOS)"
+
+.PHONY: checkmetrics
+checkmetrics: $(PROMTOOL)
+	@echo ">> checking metrics for correctness"
+	./checkmetrics.sh $(PROMTOOL) $(e2e-out)
+	./checkmetrics.sh $(PROMTOOL) $(e2e-out-64k-page)
+
+.PHONY: checkrules
+checkrules: $(PROMTOOL)
+	@echo ">> checking rules for correctness"
+	find . -name "*rules*.yml" | xargs -I {} $(PROMTOOL) check rules {}
+
+.PHONY: test-docker
+test-docker:
+	@echo ">> testing docker image"
+	./test_image.sh "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-amd64:$(DOCKER_IMAGE_TAG)" 9100
+
+.PHONY: promtool
+promtool: $(PROMTOOL)
+
+$(PROMTOOL):
+	mkdir -p $(FIRST_GOPATH)/bin
+	curl -fsS -L $(PROMTOOL_URL) | tar -xvzf - -C $(FIRST_GOPATH)/bin --strip 1 "prometheus-$(PROMTOOL_VERSION).$(GO_BUILD_PLATFORM)/promtool"