From dea14ee9be9645ed2de795af94cee08029aeaffb Mon Sep 17 00:00:00 2001 From: Guillaume Belanger Date: Mon, 29 Apr 2024 12:22:19 -0400 Subject: [PATCH] feat: expose metrics for prometheus to scrape (#102) --- go.mod | 6 ++++++ go.sum | 20 ++++++++++++++++---- metrics/telemetry.go | 23 +++++++++++++++++++++++ service/init.go | 3 +++ 4 files changed, 48 insertions(+), 4 deletions(-) create mode 100644 metrics/telemetry.go diff --git a/go.mod b/go.mod index d89e908..03e4b12 100644 --- a/go.mod +++ b/go.mod @@ -16,6 +16,7 @@ require ( github.com/omec-project/logger_util v1.2.0 github.com/omec-project/openapi v1.2.0 github.com/omec-project/util v1.0.13 + github.com/prometheus/client_golang v1.19.0 github.com/sirupsen/logrus v1.9.3 github.com/stretchr/testify v1.9.0 github.com/tim-ywliu/event v0.1.0 @@ -25,7 +26,9 @@ require ( require ( github.com/asaskevich/govalidator v0.0.0-20210307081110-f21760c49a8d // indirect + github.com/beorn7/perks v1.0.1 // indirect github.com/bytedance/sonic v1.11.3 // indirect + github.com/cespare/xxhash/v2 v2.2.0 // indirect github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d // indirect github.com/chenzhuoyu/iasm v0.9.1 // indirect github.com/cpuguy83/go-md2man/v2 v2.0.2 // indirect @@ -50,6 +53,9 @@ require ( github.com/pelletier/go-toml/v2 v2.2.0 // indirect github.com/pkg/errors v0.9.1 // indirect github.com/pmezard/go-difflib v1.0.0 // indirect + github.com/prometheus/client_model v0.5.0 // indirect + github.com/prometheus/common v0.48.0 // indirect + github.com/prometheus/procfs v0.12.0 // indirect github.com/russross/blackfriday/v2 v2.1.0 // indirect github.com/twitchyliquid64/golang-asm v0.15.1 // indirect github.com/ugorji/go/codec v1.2.12 // indirect diff --git a/go.sum b/go.sum index 77d50da..5e41f3c 100644 --- a/go.sum +++ b/go.sum @@ -5,10 +5,14 @@ github.com/antonfisher/nested-logrus-formatter v1.3.1 h1:NFJIr+pzwv5QLHTPyKz9UME github.com/antonfisher/nested-logrus-formatter v1.3.1/go.mod h1:6WTfyWFkBc9+zyBaKIqRrg/KwMqBbodBjgbHjDz7zjA= github.com/asaskevich/govalidator v0.0.0-20210307081110-f21760c49a8d h1:Byv0BzEl3/e6D5CLfI0j/7hiIEtvGVFPCZ7Ei2oq8iQ= github.com/asaskevich/govalidator v0.0.0-20210307081110-f21760c49a8d/go.mod h1:WaHUgvxTVq04UNunO+XhnAqY/wQc+bxr74GqbsZ/Jqw= +github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM= +github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw= github.com/bytedance/sonic v1.5.0/go.mod h1:ED5hyg4y6t3/9Ku1R6dU/4KyJ48DZ4jPhfY1O2AihPM= github.com/bytedance/sonic v1.10.0-rc/go.mod h1:ElCzW+ufi8qKqNW0FY314xriJhyJhuoJ3gFZdAHF7NM= github.com/bytedance/sonic v1.11.3 h1:jRN+yEjakWh8aK5FzrciUHG8OFXK+4/KrAX/ysEtHAA= github.com/bytedance/sonic v1.11.3/go.mod h1:iZcSUejdk5aukTND/Eu/ivjQuEL0Cu9/rf50Hi0u/g4= +github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44= +github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs= github.com/chenzhuoyu/base64x v0.0.0-20211019084208-fb5309c8db06/go.mod h1:DH46F32mSOjUmXrMHnKwZdA8wcEefY7UVqBKYGjpdQY= github.com/chenzhuoyu/base64x v0.0.0-20221115062448-fe3a3abad311/go.mod h1:b583jCggY9gE99b6G5LEC39OIiVsWj+R97kbl5odCEk= github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d h1:77cEq6EriyTZ0g/qfRdp61a3Uu/AWrgIq2s0ClJV1g0= @@ -62,8 +66,8 @@ github.com/klauspost/cpuid/v2 v2.0.9/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa02 github.com/klauspost/cpuid/v2 v2.2.7 h1:ZWSB3igEs+d0qvnxR/ZBzXVmxkgt8DdzP6m9pfuVLDM= github.com/klauspost/cpuid/v2 v2.2.7/go.mod h1:Lcz8mBdAVJIBVzewtcLocK12l3Y+JytZYpaMropDUws= github.com/knz/go-libedit v1.10.1/go.mod h1:MZTVkCWyz0oBc7JOWP3wNAzd002ZbM/5hgShxwh4x8M= -github.com/kr/pretty v0.3.0 h1:WgNl7dwNpEZ6jJ9k1snq4pZsg7DOEN8hP9Xw0Tsjwk0= -github.com/kr/pretty v0.3.0/go.mod h1:640gp4NfQd8pI5XOwp5fnNeVWj67G7CFk/SaSQn7NBk= +github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE= +github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk= github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY= github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE= github.com/leodido/go-urn v1.4.0 h1:WT9HwE9SGECu3lg4d/dIA+jxlljEa1/ffXKmRjqdmIQ= @@ -99,8 +103,16 @@ github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4= github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0= github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM= github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= -github.com/rogpeppe/go-internal v1.8.0 h1:FCbCCtXNOY3UtUuHUYaghJg4y7Fd14rXifAYUAtL9R8= -github.com/rogpeppe/go-internal v1.8.0/go.mod h1:WmiCO8CzOY8rg0OYDC4/i/2WRWAB6poM+XZ2dLUbcbE= +github.com/prometheus/client_golang v1.19.0 h1:ygXvpU1AoN1MhdzckN+PyD9QJOSD4x7kmXYlnfbA6JU= +github.com/prometheus/client_golang v1.19.0/go.mod h1:ZRM9uEAypZakd+q/x7+gmsvXdURP+DABIEIjnmDdp+k= +github.com/prometheus/client_model v0.5.0 h1:VQw1hfvPvk3Uv6Qf29VrPF32JB6rtbgI6cYPYQjL0Qw= +github.com/prometheus/client_model v0.5.0/go.mod h1:dTiFglRmd66nLR9Pv9f0mZi7B7fk5Pm3gvsjB5tr+kI= +github.com/prometheus/common v0.48.0 h1:QO8U2CdOzSn1BBsmXJXduaaW+dY/5QLjfB8svtSzKKE= +github.com/prometheus/common v0.48.0/go.mod h1:0/KsvlIEfPQCQ5I2iNSAWKPZziNCvRs5EC6ILDTlAPc= +github.com/prometheus/procfs v0.12.0 h1:jluTpSng7V9hY0O2R9DzzJHYb2xULk9VTR1V1R/k6Bo= +github.com/prometheus/procfs v0.12.0/go.mod h1:pcuDEFsWDnvcgNzo4EEweacyhjeA9Zk3cnaOZAZEfOo= +github.com/rogpeppe/go-internal v1.10.0 h1:TMyTOH3F/DB16zRVcYyreMH6GnZZrwQVAoYjRBZyWFQ= +github.com/rogpeppe/go-internal v1.10.0/go.mod h1:UQnix2H7Ngw/k4C5ijL5+65zddjncjaFoBhdsK/akog= github.com/russross/blackfriday/v2 v2.1.0 h1:JIOH55/0cWyOuilr9/qlrm0BSXldqnqwMsf35Ld67mk= github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM= github.com/sirupsen/logrus v1.9.3 h1:dueUQJ1C2q9oE3F7wvmSGAaVtTmUizReu6fjN8uqzbQ= diff --git a/metrics/telemetry.go b/metrics/telemetry.go new file mode 100644 index 0000000..4168677 --- /dev/null +++ b/metrics/telemetry.go @@ -0,0 +1,23 @@ +// SPDX-License-Identifier: Apache-2.0 +// SPDX-FileCopyrightText: 2024 Canonical Ltd. + +/* + * Metrics package is used to expose the metrics of the PCF service. + */ + +package metrics + +import ( + "net/http" + + "github.com/omec-project/pcf/logger" + "github.com/prometheus/client_golang/prometheus/promhttp" +) + +// InitMetrics initializes PCF metrics +func InitMetrics() { + http.Handle("/metrics", promhttp.Handler()) + if err := http.ListenAndServe(":8080", nil); err != nil { + logger.InitLog.Errorf("Could not open metrics port: %v", err) + } +} diff --git a/service/init.go b/service/init.go index 5a98b3f..6ef769b 100644 --- a/service/init.go +++ b/service/init.go @@ -38,6 +38,7 @@ import ( "github.com/omec-project/pcf/httpcallback" "github.com/omec-project/pcf/internal/notifyevent" "github.com/omec-project/pcf/logger" + "github.com/omec-project/pcf/metrics" "github.com/omec-project/pcf/oam" "github.com/omec-project/pcf/policyauthorization" "github.com/omec-project/pcf/smpolicy" @@ -207,6 +208,8 @@ func (pcf *PCF) Start() { httpcallback.AddService(router) oam.AddService(router) + go metrics.InitMetrics() + router.Use(cors.New(cors.Config{ AllowMethods: []string{"GET", "POST", "OPTIONS", "PUT", "PATCH", "DELETE"}, AllowHeaders: []string{