Resync with upstream.

.github/workflows/build.yml

@@ -6,57 +6,14 @@ jobs:
       - name: setup Go
         uses: actions/setup-go@v2
         with:
-          go-version: '1.17'
+          go-version: '1.23.1'
 
-      - uses: actions/checkout@master
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
 
       - run: make style
       - run: make vet
       - run: make test
-      - run: make build
-      - run: make integ
-
-  image:
-    runs-on: ubuntu-latest
-    steps:
-      - name: setup buildx
-        id: buildx
-        uses: docker/setup-buildx-action@v1
-        with:
-          version: latest
-
-      - name: login to docker hub
-        if: github.event_name != 'pull_request'
-        uses: docker/login-action@v1
-        with:
-          registry: docker.io
-          username: ${{ secrets.DOCKER_USERNAME }}
-          password: ${{ secrets.DOCKER_PASSWORD }}
-
-      - uses: actions/checkout@master
-
-      - name: generate docker metadata
-        id: meta
-        uses: docker/metadata-action@v3
-        with:
-          context: .
-          # list of Docker images to use as base name for tags
-          images: |
-            ncabatoff/process-exporter
-          # generate Docker tags based on the following events/attributes
-          tags: |
-            type=schedule
-            type=ref,event=branch
-            type=ref,event=pr
-            type=semver,pattern={{version}}
-            type=sha
-
-      - name: build docker image and, if not PR, push
-        uses: docker/build-push-action@v2
-        with:
-          file: ./Dockerfile
-          context: .
-          platforms: linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64
-          push: ${{ github.event_name != 'pull_request' }}
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
+      - run: make BRANCH=${{ github.head_ref || github.ref_name }} build
+      - run: make integ

.github/workflows/image.yml

@@ -0,0 +1,51 @@
+on:
+  push:
+    branches: [master]
+  pull_request:
+
+jobs:
+  image:
+    runs-on: ubuntu-latest
+    steps:
+      - name: setup buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v3
+        with:
+          version: latest
+
+      - name: login to docker hub
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v1
+        with:
+          registry: docker.io
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: generate docker metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          # list of Docker images to use as base name for tags
+          images: |
+            ncabatoff/process-exporter
+          # generate Docker tags based on the following events/attributes
+          tags: |
+            type=schedule
+            type=ref,event=branch
+            type=ref,event=pr
+            type=semver,pattern={{version}}
+            type=sha
+
+      - name: build docker image and, if not PR, push
+        uses: docker/build-push-action@v5
+        with:
+          file: ./Dockerfile
+          context: .
+          platforms: linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

.github/workflows/release.yml

@@ -11,22 +11,22 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
       - name: setup Go
-        uses: actions/setup-go@v2
+        uses: actions/setup-go@v4
         with:
-          go-version: '1.17'
+          go-version: '1.23.1'
 
       - run: make test
 
       - name: Run GoReleaser
-        uses: goreleaser/goreleaser-action@v2
+        uses: goreleaser/goreleaser-action@v5
         with:
           distribution: goreleaser
-          version: "~> 0.182"
+          version: "~> 1.25"
           args: release --rm-dist
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.gitignore

@@ -4,3 +4,4 @@ load-generator
 integration-tester
 dist
 /vendor
+/.vscode

.goreleaser.yml

@@ -1,14 +1,14 @@
 builds:
   - main: cmd/process-exporter/main.go
     binary: process-exporter
-    flags: -tags netgo
     ldflags:
       - -s -w
       - -X github.com/prometheus/common/version.BuildDate={{.Date}}
       - -X github.com/prometheus/common/version.BuildUser=goreleaser
       - -X github.com/prometheus/common/version.Revision={{.FullCommit}}
       - -X main.version={{.Version}}
-
+    env:
+      - CGO_ENABLED=0
     goos:
       - linux
     goarch:

Dockerfile

@@ -1,6 +1,6 @@
 # Start from a Debian image with the latest version of Go installed
 # and a workspace (GOPATH) configured at /go.
-FROM --platform=$BUILDPLATFORM golang:1.17 AS build
+FROM --platform=$BUILDPLATFORM golang:1.23.1 AS build
 ARG TARGETARCH
 ARG BUILDPLATFORM
 WORKDIR /go/src/github.com/ncabatoff/process-exporter

Makefile

@@ -64,10 +64,10 @@ docker:
 	docker run --rm --volumes-from configs "$(DOCKER_IMAGE_NAME):$(TAG_VERSION)" $(SMOKE_TEST)
 
 dockertest:
-	docker run --rm -it -v `pwd`:/go/src/github.com/ncabatoff/process-exporter golang:1.15  make -C /go/src/github.com/ncabatoff/process-exporter test
+	docker run --rm -it -v `pwd`:/go/src/github.com/ncabatoff/process-exporter golang:1.23.1  make -C /go/src/github.com/ncabatoff/process-exporter test
 
 dockerinteg:
-	docker run --rm -it -v `pwd`:/go/src/github.com/ncabatoff/process-exporter golang:1.15  make -C /go/src/github.com/ncabatoff/process-exporter build integ
+	docker run --rm -it -v `pwd`:/go/src/github.com/ncabatoff/process-exporter golang:1.23.1  make -C /go/src/github.com/ncabatoff/process-exporter build integ
 
 .PHONY: update-go-deps
 update-go-deps:

README.md

@@ -46,7 +46,8 @@ as well as group name.
 re-evaluated. This is disabled by default as an optimization, but since
 processes can choose to change their names, this may result in a process
 falling into the wrong group if we happen to see it for the first time before
-it's assumed its proper name.
+it's assumed its proper name. You can use -recheck-with-time-limit to enable this
+feature only for a specific duration after process starts.
 
 -procnames is intended as a quick alternative to using a config file.  Details
 in the following section.
@@ -371,7 +372,7 @@ An example Grafana dashboard to view the metrics is available at https://grafana
 
 ## Building
 
-Requires Go 1.13 installed.
+Requires Go 1.21 (at least) installed.
 ```
 make
 ```
@@ -414,4 +415,4 @@ process_max_fds 1.048576e+06
 process_open_fds 10
 ```
 
-For further information about TLS configuration, please visit: [exporter-toolkit](https://github.com/prometheus/exporter-toolkit/blob/master/docs/web-configuration.md)
+For further information about TLS configuration, please visit: [exporter-toolkit](https://github.com/prometheus/exporter-toolkit/blob/master/docs/web-configuration.md)

cmd/process-exporter/main.go

@@ -16,6 +16,7 @@ import (
 	"github.com/ncabatoff/process-exporter/collector"
 	"github.com/ncabatoff/process-exporter/config"
 	"github.com/prometheus/client_golang/prometheus"
+	verCollector "github.com/prometheus/client_golang/prometheus/collectors/version"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 	"github.com/prometheus/common/promlog"
 	promVersion "github.com/prometheus/common/version"
@@ -141,7 +142,7 @@ func (nmr *nameMapperRegex) MatchAndName(nacl common.ProcAttributes) (bool, stri
 
 func init() {
 	promVersion.Version = version
-	prometheus.MustRegister(promVersion.NewCollector("process_exporter"))
+	prometheus.MustRegister(verCollector.NewCollector("process_exporter"))
 }
 
 func main() {
@@ -172,10 +173,13 @@ func main() {
 			"path to YAML web config file")
 		recheck = flag.Bool("recheck", false,
 			"recheck process names on each scrape")
+		recheckTimeLimit = flag.Duration("recheck-with-time-limit", 0,
+			"recheck processes only this much time after their start, but no longer.")
 		debug = flag.Bool("debug", false,
 			"log debugging information to stdout")
 		showVersion = flag.Bool("version", false,
 			"print version information and exit")
+		removeEmptyGroups = flag.Bool("remove-empty-groups", false, "forget process groups with no processes")
 	)
 	flag.Parse()
 
@@ -231,15 +235,21 @@ func main() {
 		matchnamer = namemapper
 	}
 
+	if *recheckTimeLimit != 0 {
+		*recheck = true
+	}
+
 	pc, err := collector.NewProcessCollector(
 		collector.ProcessCollectorOption{
-			ProcFSPath:  *procfsPath,
-			Children:    *children,
-			Threads:     *threads,
-			GatherSMaps: *smaps,
-			Namer:       matchnamer,
-			Recheck:     *recheck,
-			Debug:       *debug,
+			ProcFSPath:        *procfsPath,
+			Children:          *children,
+			Threads:           *threads,
+			GatherSMaps:       *smaps,
+			Namer:             matchnamer,
+			Recheck:           *recheck,
+			RecheckTimeLimit:  *recheckTimeLimit,
+			Debug:             *debug,
+			RemoveEmptyGroups: *removeEmptyGroups,
 		},
 	)
 	if err != nil {
@@ -271,7 +281,10 @@ func main() {
 			</html>`))
 	})
 	server := &http.Server{Addr: *listenAddress}
-	if err := web.ListenAndServe(server, *tlsConfigFile, logger); err != nil {
+	if err := web.ListenAndServe(server, &web.FlagConfig{
+		WebListenAddresses: &[]string{*listenAddress},
+		WebConfigFile:      tlsConfigFile,
+	}, logger); err != nil {
 		log.Fatalf("Failed to start the server: %v", err)
 		os.Exit(1)
 	}

collector/process_collector.go

@@ -2,6 +2,7 @@ package collector
 
 import (
 	"log"
+	"time"
 
 	common "github.com/ncabatoff/process-exporter"
 	"github.com/ncabatoff/process-exporter/proc"
@@ -155,13 +156,15 @@ type (
 	}
 
 	ProcessCollectorOption struct {
-		ProcFSPath  string
-		Children    bool
-		Threads     bool
-		GatherSMaps bool
-		Namer       common.MatchNamer
-		Recheck     bool
-		Debug       bool
+		ProcFSPath        string
+		Children          bool
+		Threads           bool
+		GatherSMaps       bool
+		Namer             common.MatchNamer
+		Recheck           bool
+		RecheckTimeLimit  time.Duration
+		Debug             bool
+		RemoveEmptyGroups bool
 	}
 
 	NamedProcessCollector struct {
@@ -186,7 +189,7 @@ func NewProcessCollector(options ProcessCollectorOption) (*NamedProcessCollector
 	fs.GatherSMaps = options.GatherSMaps
 	p := &NamedProcessCollector{
 		scrapeChan: make(chan scrapeRequest),
-		Grouper:    proc.NewGrouper(options.Namer, options.Children, options.Threads, options.Recheck, options.Debug),
+		Grouper:    proc.NewGrouper(options.Namer, options.Children, options.Threads, options.Recheck, options.RecheckTimeLimit, options.Debug, options.RemoveEmptyGroups),
 		source:     fs,
 		threads:    options.Threads,
 		smaps:      options.GatherSMaps,

go.mod

@@ -1,17 +1,39 @@
 module github.com/ncabatoff/process-exporter
 
-go 1.13
+go 1.21
 
 require (
-	github.com/google/go-cmp v0.5.6
-	github.com/kr/pretty v0.3.0 // indirect
+	github.com/google/go-cmp v0.6.0
 	github.com/ncabatoff/fakescraper v0.0.0-20201102132415-4b37ba603d65
 	github.com/ncabatoff/go-seq v0.0.0-20180805175032-b08ef85ed833
-	github.com/prometheus/client_golang v1.11.0
-	github.com/prometheus/common v0.29.0
-	github.com/prometheus/exporter-toolkit v0.7.0
-	github.com/prometheus/procfs v0.7.3
-	github.com/rogpeppe/go-internal v1.8.0 // indirect
+	github.com/prometheus/client_golang v1.19.0
+	github.com/prometheus/common v0.52.3
+	github.com/prometheus/exporter-toolkit v0.11.0
+	github.com/prometheus/procfs v0.14.0
 	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c
 	gopkg.in/yaml.v2 v2.4.0
 )
+
+require (
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/cespare/xxhash/v2 v2.2.0 // indirect
+	github.com/coreos/go-systemd/v22 v22.5.0 // indirect
+	github.com/go-kit/log v0.2.1 // indirect
+	github.com/go-logfmt/logfmt v0.5.1 // indirect
+	github.com/golang/protobuf v1.5.3 // indirect
+	github.com/jpillora/backoff v1.0.0 // indirect
+	github.com/kr/pretty v0.3.1 // indirect
+	github.com/kr/text v0.2.0 // indirect
+	github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f // indirect
+	github.com/prometheus/client_model v0.6.0 // indirect
+	github.com/rogpeppe/go-internal v1.10.0 // indirect
+	github.com/stretchr/testify v1.9.0 // indirect
+	golang.org/x/crypto v0.21.0 // indirect
+	golang.org/x/net v0.23.0 // indirect
+	golang.org/x/oauth2 v0.18.0 // indirect
+	golang.org/x/sync v0.7.0 // indirect
+	golang.org/x/sys v0.19.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
+	google.golang.org/appengine v1.6.7 // indirect
+	google.golang.org/protobuf v1.33.0 // indirect
+)