http: adding metric to display information about the visus binary.

The following metrics have been added: visus_info, visus_start_seconds.

Author: sravotto

.gitignore

@@ -15,7 +15,6 @@
 # vendor/
 scripts/
 tmp/
-*.sh
 certs
 visus
 visus-*

internal/cmd/collection/testdata/invalid_scope.yaml

@@ -1,3 +1,17 @@
+# Copyright 2025 Cockroach Labs Inc.
+#
+# 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.
+
 name: query_count
 enabled: true
 scope: invalid

internal/cmd/collection/testdata/malformed.yaml

@@ -1,3 +1,17 @@
+# Copyright 2025 Cockroach Labs Inc.
+#
+# 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.
+
 name: query_count
 enabled: true
 scope: node

internal/cmd/histogram/testdata/malformed.yaml

@@ -1,3 +1,17 @@
+# Copyright 2025 Cockroach Labs Inc.
+#
+# 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.
+
 enabled: true
 name: latency
 bins: wrong

internal/http/server.go

@@ -21,6 +21,7 @@ import (
 	"net/http"
 	_ "net/http/pprof" // enabling debugging
 	"net/url"
+	"runtime/debug"
 
 	"github.com/NYTimes/gziphandler"
 	"github.com/cockroachdb/field-eng-powertools/stopper"
@@ -34,6 +35,10 @@ import (
 	log "github.com/sirupsen/logrus"
 )
 
+// Version of the visus binary, set using:
+// `-ldflags="-X github.com/cockroachlabs/visus/internal/http.Version=..."`
+var Version string
+
 type serverImpl struct {
 	clientTLSConfig *clientTLSConfig
 	config          *server.Config
@@ -143,7 +148,7 @@ func (s *serverImpl) Start(ctx *stopper.Context) error {
 	})
 
 	http.Handle(s.config.Endpoint, gziphandler.GzipHandler(handler))
-
+	s.debugInfo()
 	ctx.Go(func(ctx *stopper.Context) error {
 		var err error
 		if !s.config.Insecure {
@@ -183,6 +188,37 @@ func (s *serverImpl) errorResponse(w http.ResponseWriter, msg string, err error)
 	}
 }
 
+func (s *serverImpl) debugInfo() {
+	if bi, ok := debug.ReadBuildInfo(); ok {
+		labels := prometheus.Labels{
+			"go_version": bi.GoVersion,
+			"module":     bi.Path,
+		}
+		for _, setting := range bi.Settings {
+			switch setting.Key {
+			case "vcs.revision":
+				labels["commit"] = setting.Value
+			case "vcs.time":
+				labels["build_time"] = setting.Value
+			}
+		}
+		labels["version"] = Version
+		g := prometheus.NewGauge(prometheus.GaugeOpts{
+			Name:        "visus_info",
+			Help:        "information about the visus binary",
+			ConstLabels: labels,
+		})
+		g.Set(1)
+		s.registry.Register(g)
+	}
+	g := prometheus.NewGauge(prometheus.GaugeOpts{
+		Name: "visus_start_seconds",
+		Help: "the wall time at which visus was started",
+	})
+	g.SetToCurrentTime()
+	s.registry.Register(g)
+}
+
 // refresh the server configuration
 func (s *serverImpl) refresh(ctx *stopper.Context) error {
 	if err := s.keyPair.load(); err != nil {

release.sh

@@ -0,0 +1,60 @@
+#!/bin/bash
+# Copyright 2025 Google LLC
+#
+# 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.
+
+
+version=`git describe --exact-match --tags`
+
+if [[ -z "$version" ]] 
+then
+    echo "not tag found. Run this command within a git tag"
+    echo "Create a tag for vX.Y.Z and push it to github. Run:"
+    echo "git tag vX.Y.Z"
+    echo "git push origin vX.Y.Z"
+    echo "current tags:"
+    git tag
+    exit -1
+fi
+
+go clean
+
+amdfile=visus-${version}.linux-amd64.tgz
+armfile=visus-${version}.linux-arm64.tgz
+
+echo "Checking for license"
+go run github.com/google/addlicense -check .
+
+echo "Running test"
+go clean -testcache
+go test ./...
+
+echo "Running lint"
+go run github.com/cockroachdb/crlfmt .
+go run golang.org/x/lint/golint -set_exit_status ./...
+go run honnef.co/go/tools/cmd/staticcheck -checks all ./...
+
+VERSION="github.com/cockroachlabs/visus/internal/http.Version=$version"
+GOOS=linux go build -v  -ldflags="-X '$VERSION'" -o visus
+
+tar cvfz $amdfile  visus  examples
+
+shasum -a 256 $amdfile
+GOOS=linux GOARCH=arm64 go build -v  -ldflags="-X '$VERSION'" -o visus
+
+tar cvfz $armfile visus  examples
+shasum -a 256 $armfile
+
+go build -ldflags="-X '$VERSION'" -o visus
+
+echo "Upload binaries $amdfile and  $armfile to release"