chore (internal): Use go tools in internal/tools

.github/workflows/ci.yml

@@ -38,7 +38,7 @@ jobs:
     # should also be updated.
     container:
 
-      image: quay.io/prometheus/golang-builder:1.25-base
+      image: quay.io/prometheus/golang-builder:1.26-base
     services:
       maildev-noauth:
         image: maildev/maildev:2.2.1

.github/workflows/mixin.yml

@@ -14,7 +14,7 @@ jobs:
       - name: install Go
         uses: actions/setup-go@7a3fe6cf4cb3a834922a1244abfce67bcef6a0c5 # v6.2.0
         with:
-          go-version: 1.25.x
+          go-version: 1.26.x
       # pin the mixtool version until https://github.com/monitoring-mixins/mixtool/issues/135 is merged.
       - run: go install github.com/monitoring-mixins/mixtool/cmd/mixtool@2282201396b69055bb0f92f187049027a16d2130
       - run: go install github.com/google/go-jsonnet/cmd/jsonnetfmt@latest

buf.gen.yaml

@@ -1,6 +1,6 @@
 version: v2
 plugins:
-  - local: protoc-gen-go
+  - local: ['go', 'tool', '-modfile=internal/tools/go.mod', 'protoc-gen-go']
     out: .
     opt:
       - module=github.com/prometheus/alertmanager

cli/silence_import.go

@@ -115,11 +115,9 @@ func (c *silenceImportCmd) bulkImport(ctx context.Context, _ *kingpin.ParseConte
 	}
 	defer closeChannels()
 	for w := 0; w < c.workers; w++ {
-		wg.Add(1)
-		go func() {
+		wg.Go(func() {
 			addSilenceWorker(ctx, amclient.Silence, silencec, errc)
-			wg.Done()
-		}()
+		})
 	}
 
 	errCount := 0

cluster/tls_transport_test.go

@@ -210,11 +210,9 @@ func TestDialTimeout(t *testing.T) {
 
 	var to net.Conn
 	var wg sync.WaitGroup
-	wg.Add(1)
-	go func() {
+	wg.Go(func() {
 		to = <-t2.StreamCh()
-		wg.Done()
-	}()
+	})
 
 	sent := []byte(("test stream"))
 	m, err := from.Write(sent)

cmd/alertmanager/main.go

@@ -287,11 +287,9 @@ func run() int {
 		notificationLog.SetBroadcast(c.Broadcast)
 	}
 
-	wg.Add(1)
-	go func() {
+	wg.Go(func() {
 		notificationLog.Maintenance(*maintenanceInterval, filepath.Join(*dataDir, "nflog"), stopc, nil)
-		wg.Done()
-	}()
+	})
 
 	marker := types.NewMarker(prometheus.DefaultRegisterer)
 
@@ -317,11 +315,9 @@ func run() int {
 	}
 
 	// Start providers before router potentially sends updates.
-	wg.Add(1)
-	go func() {
+	wg.Go(func() {
 		silences.Maintenance(*maintenanceInterval, filepath.Join(*dataDir, "silences"), stopc, nil)
-		wg.Done()
-	}()
+	})
 
 	defer func() {
 		close(stopc)

dispatch/dispatch.go

@@ -200,9 +200,7 @@ func (d *Dispatcher) run(it provider.AlertIterator) {
 	defer it.Close()
 
 	// Start maintenance goroutine
-	d.finished.Add(1)
-	go func() {
-		defer d.finished.Done()
+	d.finished.Go(func() {
 		ticker := time.NewTicker(d.maintenanceInterval)
 		defer ticker.Stop()
 
@@ -214,12 +212,10 @@ func (d *Dispatcher) run(it provider.AlertIterator) {
 				return
 			}
 		}
-	}()
+	})
 
 	// Start timer goroutine
-	d.finished.Add(1)
-	go func() {
-		defer d.finished.Done()
+	d.finished.Go(func() {
 		<-d.startTimer.C
 
 		if d.state.CompareAndSwap(DispatcherStateWaitingToStart, DispatcherStateRunning) {
@@ -232,7 +228,7 @@ func (d *Dispatcher) run(it provider.AlertIterator) {
 				})
 			}
 		}
-	}()
+	})
 
 	// Start multiple alert ingestion goroutines
 	alertCh := it.Next()

go.mod

@@ -1,6 +1,6 @@
 module github.com/prometheus/alertmanager
 
-go 1.24.0
+go 1.25.0
 
 require (
 	github.com/KimMachineGun/automemlimit v0.7.5

internal/tools/go.mod

@@ -2,11 +2,10 @@ module github.com/prometheus/prometheus/internal/tools
 
 go 1.25.0
 
-require (
-	github.com/bufbuild/buf v1.65.0
-	github.com/go-swagger/go-swagger v0.33.1
-	golang.org/x/tools v0.41.0
-	google.golang.org/protobuf v1.36.11
+tool (
+	github.com/bufbuild/buf/cmd/buf
+	github.com/go-swagger/go-swagger/cmd/swagger
+	google.golang.org/protobuf/cmd/protoc-gen-go
 )
 
 require (
@@ -35,6 +34,7 @@ require (
 	github.com/Microsoft/go-winio v0.6.2 // indirect
 	github.com/antlr4-go/antlr/v4 v4.13.1 // indirect
 	github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2 // indirect
+	github.com/bufbuild/buf v1.65.0 // indirect
 	github.com/bufbuild/protocompile v0.14.2-0.20260130195850-5c64bed4577e // indirect
 	github.com/bufbuild/protoplugin v0.0.0-20250218205857-750e09ce93e1 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
@@ -66,13 +66,14 @@ require (
 	github.com/go-openapi/strfmt v0.23.0 // indirect
 	github.com/go-openapi/swag v0.23.1 // indirect
 	github.com/go-openapi/validate v0.24.0 // indirect
+	github.com/go-swagger/go-swagger v0.33.1 // indirect
 	github.com/go-viper/mapstructure/v2 v2.4.0 // indirect
 	github.com/gofrs/flock v0.13.0 // indirect
 	github.com/google/cel-go v0.27.0 // indirect
 	github.com/google/go-containerregistry v0.20.7 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/gorilla/handlers v1.5.2 // indirect
-	github.com/grpc-ecosystem/grpc-gateway/v2 v2.27.7 // indirect
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.28.0 // indirect
 	github.com/huandu/xstrings v1.5.0 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/jdx/go-netrc v1.0.0 // indirect
@@ -139,12 +140,13 @@ require (
 	golang.org/x/net v0.49.0 // indirect
 	golang.org/x/sync v0.19.0 // indirect
 	golang.org/x/sys v0.40.0 // indirect
-	golang.org/x/telemetry v0.0.0-20260109210033-bd525da824e2 // indirect
 	golang.org/x/term v0.39.0 // indirect
-	golang.org/x/text v0.33.0 // indirect
-	google.golang.org/genproto/googleapis/api v0.0.0-20260128011058-8636f8732409 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20260128011058-8636f8732409 // indirect
-	google.golang.org/grpc v1.78.0 // indirect
+	golang.org/x/text v0.34.0 // indirect
+	golang.org/x/tools v0.41.0 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20260209200024-4cfbd4190f57 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20260209200024-4cfbd4190f57 // indirect
+	google.golang.org/grpc v1.79.1 // indirect
+	google.golang.org/protobuf v1.36.11 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 	mvdan.cc/xurls/v2 v2.6.0 // indirect

internal/tools/go.sum

@@ -146,8 +146,8 @@ github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/gorilla/handlers v1.5.2 h1:cLTUSsNkgcwhgRqvCNmdbRWG0A3N4F+M2nWKdScwyEE=
 github.com/gorilla/handlers v1.5.2/go.mod h1:dX+xVpaxdSw+q0Qek8SSsl3dfMk3jNddUkMzo0GtH0w=
-github.com/grpc-ecosystem/grpc-gateway/v2 v2.27.7 h1:X+2YciYSxvMQK0UZ7sg45ZVabVZBeBuvMkmuI2V3Fak=
-github.com/grpc-ecosystem/grpc-gateway/v2 v2.27.7/go.mod h1:lW34nIZuQ8UDPdkon5fmfp2l3+ZkQ2me/+oecHYLOII=
+github.com/grpc-ecosystem/grpc-gateway/v2 v2.28.0 h1:HWRh5R2+9EifMyIHV7ZV+MIZqgz+PMpZ14Jynv3O2Zs=
+github.com/grpc-ecosystem/grpc-gateway/v2 v2.28.0/go.mod h1:JfhWUomR1baixubs02l85lZYYOm7LV6om4ceouMv45c=
 github.com/huandu/xstrings v1.5.0 h1:2ag3IFq9ZDANvthTwTiqSSZLjDc+BedvHPAp5tJy2TI=
 github.com/huandu/xstrings v1.5.0/go.mod h1:y5/lhBue+AyNmUVz9RLU9xbLR0o4KIIExikq4ovT0aE=
 github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
@@ -313,23 +313,21 @@ golang.org/x/sys v0.0.0-20210616094352-59db8d763f22/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.40.0 h1:DBZZqJ2Rkml6QMQsZywtnjnnGvHza6BTfYFWY9kjEWQ=
 golang.org/x/sys v0.40.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
-golang.org/x/telemetry v0.0.0-20260109210033-bd525da824e2 h1:O1cMQHRfwNpDfDJerqRoE2oD+AFlyid87D40L/OkkJo=
-golang.org/x/telemetry v0.0.0-20260109210033-bd525da824e2/go.mod h1:b7fPSJ0pKZ3ccUh8gnTONJxhn3c/PS6tyzQvyqw4iA8=
 golang.org/x/term v0.39.0 h1:RclSuaJf32jOqZz74CkPA9qFuVTX7vhLlpfj/IGWlqY=
 golang.org/x/term v0.39.0/go.mod h1:yxzUCTP/U+FzoxfdKmLaA0RV1WgE0VY7hXBwKtY/4ww=
-golang.org/x/text v0.33.0 h1:B3njUFyqtHDUI5jMn1YIr5B0IE2U0qck04r6d4KPAxE=
-golang.org/x/text v0.33.0/go.mod h1:LuMebE6+rBincTi9+xWTY8TztLzKHc/9C1uBCG27+q8=
+golang.org/x/text v0.34.0 h1:oL/Qq0Kdaqxa1KbNeMKwQq0reLCCaFtqu2eNuSeNHbk=
+golang.org/x/text v0.34.0/go.mod h1:homfLqTYRFyVYemLBFl5GgL/DWEiH5wcsQ5gSh1yziA=
 golang.org/x/time v0.0.0-20210723032227-1f47c861a9ac h1:7zkz7BUtwNFFqcowJ+RIgu2MaV/MapERkDIy+mwPyjs=
 golang.org/x/time v0.0.0-20210723032227-1f47c861a9ac/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/tools v0.41.0 h1:a9b8iMweWG+S0OBnlU36rzLp20z1Rp10w+IY2czHTQc=
 golang.org/x/tools v0.41.0/go.mod h1:XSY6eDqxVNiYgezAVqqCeihT4j1U2CCsqvH3WhQpnlg=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-google.golang.org/genproto/googleapis/api v0.0.0-20260128011058-8636f8732409 h1:merA0rdPeUV3YIIfHHcH4qBkiQAc1nfCKSI7lB4cV2M=
-google.golang.org/genproto/googleapis/api v0.0.0-20260128011058-8636f8732409/go.mod h1:fl8J1IvUjCilwZzQowmw2b7HQB2eAuYBabMXzWurF+I=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20260128011058-8636f8732409 h1:H86B94AW+VfJWDqFeEbBPhEtHzJwJfTbgE2lZa54ZAQ=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20260128011058-8636f8732409/go.mod h1:j9x/tPzZkyxcgEFkiKEEGxfvyumM01BEtsW8xzOahRQ=
-google.golang.org/grpc v1.78.0 h1:K1XZG/yGDJnzMdd/uZHAkVqJE+xIDOcmdSFZkBUicNc=
-google.golang.org/grpc v1.78.0/go.mod h1:I47qjTo4OKbMkjA/aOOwxDIiPSBofUtQUI5EfpWvW7U=
+google.golang.org/genproto/googleapis/api v0.0.0-20260209200024-4cfbd4190f57 h1:JLQynH/LBHfCTSbDWl+py8C+Rg/k1OVH3xfcaiANuF0=
+google.golang.org/genproto/googleapis/api v0.0.0-20260209200024-4cfbd4190f57/go.mod h1:kSJwQxqmFXeo79zOmbrALdflXQeAYcUbgS7PbpMknCY=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20260209200024-4cfbd4190f57 h1:mWPCjDEyshlQYzBpMNHaEof6UX1PmHcaUODUywQ0uac=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20260209200024-4cfbd4190f57/go.mod h1:j9x/tPzZkyxcgEFkiKEEGxfvyumM01BEtsW8xzOahRQ=
+google.golang.org/grpc v1.79.1 h1:zGhSi45ODB9/p3VAawt9a+O/MULLl9dpizzNNpq7flY=
+google.golang.org/grpc v1.79.1/go.mod h1:KmT0Kjez+0dde/v2j9vzwoAScgEPx/Bw1CYChhHLrHQ=
 google.golang.org/protobuf v1.36.11 h1:fV6ZwhNocDyBLK0dj+fg8ektcVegBBuEolpbTQyBNVE=
 google.golang.org/protobuf v1.36.11/go.mod h1:HTf+CrKn2C3g5S8VImy6tdcUvCska2kB7j23XfzDpco=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=

nflog/nflog_test.go

@@ -156,14 +156,12 @@ func TestWithMaintenance_SupportsCustomCallback(t *testing.T) {
 	var calls atomic.Int32
 	var wg sync.WaitGroup
 
-	wg.Add(1)
-	go func() {
-		defer wg.Done()
+	wg.Go(func() {
 		l.Maintenance(100*time.Millisecond, f.Name(), stopc, func() (int64, error) {
 			calls.Add(1)
 			return 0, nil
 		})
-	}()
+	})
 	gosched()
 
 	// Before the first tick, no maintenance executed.

provider/mem/mem_test.go

@@ -564,10 +564,7 @@ func TestAlertsConcurrently(t *testing.T) {
 	expire := 10 * time.Millisecond
 	wg := sync.WaitGroup{}
 	for range 100 {
-		wg.Add(1)
-		go func() {
-			defer wg.Done()
-
+		wg.Go(func() {
 			j := 0
 			for {
 				select {
@@ -592,7 +589,7 @@ func TestAlertsConcurrently(t *testing.T) {
 				}
 				j++
 			}
-		}()
+		})
 	}
 	wg.Wait()
 	select {

scripts/genproto.sh

@@ -8,13 +8,6 @@ if ! [[ "$0" = "scripts/genproto.sh" ]]; then
   exit 255
 fi
 
-pushd "internal/tools" >/dev/null
-INSTALL_PKGS="github.com/bufbuild/buf/cmd/buf google.golang.org/protobuf/cmd/protoc-gen-go"
-for pkg in ${INSTALL_PKGS}; do
-  go install "$pkg"
-done
-popd >/dev/null
-
 echo "generating files"
-buf dep update
-buf generate
+go tool -modfile=internal/tools/go.mod buf dep update
+go tool -modfile=internal/tools/go.mod buf generate

scripts/swagger.sh

@@ -8,15 +8,7 @@ if ! [[ "$0" = "scripts/swagger.sh" ]]; then
   exit 255
 fi
 
-FIRST_GOPATH=$(go env GOPATH | cut -d: -f1)
-
-pushd "internal/tools" >/dev/null
-go install "github.com/go-swagger/go-swagger/cmd/swagger"
-popd >/dev/null
-
 echo "generating files"
   rm -r api/v2/{client,models,restapi} ||:
-  SWAGGER="${FIRST_GOPATH}/bin/swagger"
-	$SWAGGER generate server -f api/v2/openapi.yaml --copyright-file=COPYRIGHT.txt --exclude-main -A alertmanager --target api/v2/
-	$SWAGGER generate client -f api/v2/openapi.yaml --copyright-file=COPYRIGHT.txt --skip-models --target api/v2
-
+  go tool -modfile=internal/tools/go.mod swagger generate server -f api/v2/openapi.yaml --copyright-file=COPYRIGHT.txt --exclude-main -A alertmanager --target api/v2/
+  go tool -modfile=internal/tools/go.mod swagger generate client -f api/v2/openapi.yaml --copyright-file=COPYRIGHT.txt --skip-models --target api/v2