Add build info for prometheus

build_info.go

@@ -0,0 +1,27 @@
+// Copyright 2020 astaxie
+//
+// 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 beego
+
+var (
+	BuildVersion string
+	BuildGitRevision string
+	BuildStatus string
+	BuildTag string
+	BuildTime string
+
+	GoVersion string
+
+	GitBranch string
+)

metric/prometheus.go

@@ -18,6 +18,7 @@ import (
 	"net/http"
 	"reflect"
 	"strconv"
+	"strings"
 	"time"
 
 	"github.com/prometheus/client_golang/prometheus"
@@ -40,6 +41,8 @@ func PrometheusMiddleWare(next http.Handler) http.Handler {
 
 	prometheus.MustRegister(summaryVec)
 
+	registerBuildInfo()
+
 	return http.HandlerFunc(func(writer http.ResponseWriter, q *http.Request) {
 		start := time.Now()
 		next.ServeHTTP(writer, q)
@@ -48,6 +51,28 @@ func PrometheusMiddleWare(next http.Handler) http.Handler {
 	})
 }
 
+func registerBuildInfo() {
+	buildInfo := prometheus.NewGaugeVec(prometheus.GaugeOpts{
+		Name:      "beego",
+		Subsystem: "build_info",
+		Help:      "The building information",
+		ConstLabels: map[string]string{
+			"appname": beego.BConfig.AppName,
+			"build_version":  beego.BuildVersion,
+			"build_revision": beego.BuildGitRevision,
+			"build_status":   beego.BuildStatus,
+			"build_tag":      beego.BuildTag,
+			"build_time": strings.Replace(beego.BuildTime, "--", " ", 1),
+			"go_version":     beego.GoVersion,
+			"git_branch":     beego.GitBranch,
+			"start_time": time.Now().Format("2006-01-02 15:04:05"),
+		},
+	}, []string{})
+
+	prometheus.MustRegister(buildInfo)
+	buildInfo.WithLabelValues().Set(1)
+}
+
 func report(dur time.Duration, writer http.ResponseWriter, q *http.Request, vec *prometheus.SummaryVec) {
 	ctrl := beego.BeeApp.Handlers
 	ctx := ctrl.GetContext()

scripts/gobuild.sh

@@ -0,0 +1,112 @@
+#!/bin/bash
+
+# WARNING: DO NOT EDIT, THIS FILE IS PROBABLY A COPY
+#
+# The original version of this file is located in the https://github.com/istio/common-files repo.
+# If you're looking at this file in a different repo and want to make a change, please go to the
+# common-files repo, make the change there and check it in. Then come back to this repo and run
+# "make update-common".
+
+# Copyright Istio Authors. All Rights Reserved.
+#
+# 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.
+
+# This script builds and version stamps the output
+
+# adatp to beego
+
+VERBOSE=${VERBOSE:-"0"}
+V=""
+if [[ "${VERBOSE}" == "1" ]];then
+    V="-x"
+    set -x
+fi
+
+SCRIPTPATH="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+OUT=${1:?"output path"}
+shift
+
+set -e
+
+BUILD_GOOS=${GOOS:-linux}
+BUILD_GOARCH=${GOARCH:-amd64}
+GOBINARY=${GOBINARY:-go}
+GOPKG="$GOPATH/pkg"
+BUILDINFO=${BUILDINFO:-""}
+STATIC=${STATIC:-1}
+LDFLAGS=${LDFLAGS:--extldflags -static}
+GOBUILDFLAGS=${GOBUILDFLAGS:-""}
+# Split GOBUILDFLAGS by spaces into an array called GOBUILDFLAGS_ARRAY.
+IFS=' ' read -r -a GOBUILDFLAGS_ARRAY <<< "$GOBUILDFLAGS"
+
+GCFLAGS=${GCFLAGS:-}
+export CGO_ENABLED=0
+
+if [[ "${STATIC}" !=  "1" ]];then
+    LDFLAGS=""
+fi
+
+# gather buildinfo if not already provided
+# For a release build BUILDINFO should be produced
+# at the beginning of the build and used throughout
+if [[ -z ${BUILDINFO} ]];then
+    BUILDINFO=$(mktemp)
+    "${SCRIPTPATH}/report_build_info.sh" > "${BUILDINFO}"
+fi
+
+
+# BUILD LD_EXTRAFLAGS
+LD_EXTRAFLAGS=""
+
+while read -r line; do
+    LD_EXTRAFLAGS="${LD_EXTRAFLAGS} -X ${line}"
+done < "${BUILDINFO}"
+
+# verify go version before build
+# NB. this was copied verbatim from Kubernetes hack
+minimum_go_version=go1.13 # supported patterns: go1.x, go1.x.x (x should be a number)
+IFS=" " read -ra go_version <<< "$(${GOBINARY} version)"
+if [[ "${minimum_go_version}" != $(echo -e "${minimum_go_version}\n${go_version[2]}" | sort -s -t. -k 1,1 -k 2,2n -k 3,3n | head -n1) && "${go_version[2]}" != "devel" ]]; then
+    echo "Warning: Detected that you are using an older version of the Go compiler. Beego requires ${minimum_go_version} or greater."
+fi
+
+CURRENT_BRANCH=$(git branch | grep '*')
+CURRENT_BRANCH=${CURRENT_BRANCH:2}
+
+BUILD_TIME=$(date +%Y-%m-%d--%T)
+
+LD_EXTRAFLAGS="${LD_EXTRAFLAGS} -X github.com/astaxie/beego.GoVersion=${go_version[2]:2}"
+LD_EXTRAFLAGS="${LD_EXTRAFLAGS} -X github.com/astaxie/beego.GitBranch=${CURRENT_BRANCH}"
+LD_EXTRAFLAGS="${LD_EXTRAFLAGS} -X github.com/astaxie/beego.BuildTime=$BUILD_TIME"
+
+OPTIMIZATION_FLAGS="-trimpath"
+if [ "${DEBUG}" == "1" ]; then
+    OPTIMIZATION_FLAGS=""
+fi
+
+
+
+echo "BUILD_GOARCH: $BUILD_GOARCH"
+echo "GOPKG: $GOPKG"
+echo "LD_EXTRAFLAGS: $LD_EXTRAFLAGS"
+echo "GO_VERSION: ${go_version[2]}"
+echo "BRANCH: $CURRENT_BRANCH"
+echo "BUILD_TIME: $BUILD_TIME"
+
+time GOOS=${BUILD_GOOS} GOARCH=${BUILD_GOARCH} ${GOBINARY} build \
+        ${V} "${GOBUILDFLAGS_ARRAY[@]}" ${GCFLAGS:+-gcflags "${GCFLAGS}"} \
+        -o "${OUT}" \
+        ${OPTIMIZATION_FLAGS} \
+        -pkgdir="${GOPKG}/${BUILD_GOOS}_${BUILD_GOARCH}" \
+        -ldflags "${LDFLAGS} ${LD_EXTRAFLAGS}" "${@}"

scripts/report_build_info.sh

@@ -0,0 +1,52 @@
+#!/bin/bash
+
+# WARNING: DO NOT EDIT, THIS FILE IS PROBABLY A COPY
+#
+# The original version of this file is located in the https://github.com/istio/common-files repo.
+# If you're looking at this file in a different repo and want to make a change, please go to the
+# common-files repo, make the change there and check it in. Then come back to this repo and run
+# "make update-common".
+
+# Copyright Istio 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.
+
+# adapt to beego
+
+if BUILD_GIT_REVISION=$(git rev-parse HEAD 2> /dev/null); then
+  if [[ -n "$(git status --porcelain 2>/dev/null)" ]]; then
+    BUILD_GIT_REVISION=${BUILD_GIT_REVISION}"-dirty"
+  fi
+else
+  BUILD_GIT_REVISION=unknown
+fi
+
+# Check for local changes
+if git diff-index --quiet HEAD --; then
+  tree_status="Clean"
+else
+  tree_status="Modified"
+fi
+
+# security wanted VERSION='unknown'
+VERSION="${BUILD_GIT_REVISION}"
+if [[ -n ${BEEGO_VERSION} ]]; then
+  VERSION="${BEEGO_VERSION}"
+fi
+
+GIT_DESCRIBE_TAG=$(git describe --tags)
+
+echo "github.com/astaxie/beego.BuildVersion=${VERSION}"
+echo "github.com/astaxie/beego.BuildGitRevision=${BUILD_GIT_REVISION}"
+echo "github.com/astaxie/beego.BuildStatus=${tree_status}"
+echo "github.com/astaxie/beego.BuildTag=${GIT_DESCRIBE_TAG}"