feat: add prometheus metrics support

go.mod

@@ -5,25 +5,31 @@ go 1.24
 require (
 	github.com/asaskevich/govalidator v0.0.0-20210307081110-f21760c49a8d
 	github.com/evanphx/json-patch v0.5.2
-	github.com/free5gc/openapi v1.2.0
-	github.com/free5gc/util v1.1.1
+	github.com/free5gc/openapi v1.2.1
+	github.com/free5gc/util v1.2.0
 	github.com/gin-gonic/gin v1.10.0
 	github.com/go-playground/validator/v10 v10.20.0
 	github.com/google/uuid v1.3.0
 	github.com/pkg/errors v0.9.1
+	github.com/prometheus/client_golang v1.21.0
 	github.com/sirupsen/logrus v1.9.3
 	github.com/urfave/cli/v2 v2.27.7
 	go.uber.org/mock v0.4.0
 	gopkg.in/yaml.v2 v2.4.0
 )
 
 require (
+	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/bytedance/sonic v1.11.6 // indirect
 	github.com/bytedance/sonic/loader v0.1.1 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/cloudwego/base64x v0.1.4 // indirect
 	github.com/cloudwego/iasm v0.2.0 // indirect
 	github.com/cpuguy83/go-md2man/v2 v2.0.7 // indirect
 	github.com/felixge/httpsnoop v1.0.4 // indirect
+	github.com/free5gc/aper v1.0.6-0.20250102035630-3ddc831eed6a // indirect
+	github.com/free5gc/nas v1.1.5 // indirect
+	github.com/free5gc/ngap v1.0.10 // indirect
 	github.com/gabriel-vasile/mimetype v1.4.3 // indirect
 	github.com/gin-contrib/sse v0.1.0 // indirect
 	github.com/go-logr/logr v1.4.1 // indirect
@@ -35,13 +41,18 @@ require (
 	github.com/h2non/gock v1.2.0 // indirect
 	github.com/h2non/parth v0.0.0-20190131123155-b4df798d6542 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/klauspost/compress v1.17.11 // indirect
 	github.com/klauspost/cpuid/v2 v2.2.7 // indirect
 	github.com/leodido/go-urn v1.4.0 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/mitchellh/mapstructure v1.5.0 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
 	github.com/pelletier/go-toml/v2 v2.2.2 // indirect
+	github.com/prometheus/client_model v0.6.1 // indirect
+	github.com/prometheus/common v0.62.0 // indirect
+	github.com/prometheus/procfs v0.15.1 // indirect
 	github.com/russross/blackfriday/v2 v2.1.0 // indirect
 	github.com/tim-ywliu/nested-logrus-formatter v1.3.2 // indirect
 	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
@@ -58,6 +69,6 @@ require (
 	golang.org/x/oauth2 v0.27.0 // indirect
 	golang.org/x/sys v0.31.0 // indirect
 	golang.org/x/text v0.23.0 // indirect
-	google.golang.org/protobuf v1.34.1 // indirect
+	google.golang.org/protobuf v1.36.1 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,9 +1,13 @@
 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 v1.11.6 h1:oUp34TzMlL+OY1OUWxHqsdkgC/Zfc85zGqw9siXjrc0=
 github.com/bytedance/sonic v1.11.6/go.mod h1:LysEHSvpvDySVdC2f87zGWf6CIKJcAvqab1ZaiQtds4=
 github.com/bytedance/sonic/loader v0.1.1 h1:c+e5Pt1k/cy5wMveRDyk2X4B9hF4g7an8N3zCYjJFNM=
 github.com/bytedance/sonic/loader v0.1.1/go.mod h1:ncP89zfokxS5LZrJxl5z0UJcsk4M4yY2JpfqGeCtNLU=
+github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
+github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/cloudwego/base64x v0.1.4 h1:jwCgWpFanWmN8xoIUHa2rtzmkd5J2plF/dnLS6Xd/0Y=
 github.com/cloudwego/base64x v0.1.4/go.mod h1:0zlkT4Wn5C6NdauXdJRhSKRlJvmclQ1hhJgA0rcu/8w=
 github.com/cloudwego/iasm v0.2.0 h1:1KNIy1I1H9hNNFEEH3DVnI4UujN+1zjpuk6gwHLTssg=
@@ -17,10 +21,16 @@ github.com/evanphx/json-patch v0.5.2 h1:xVCHIVMUu1wtM/VkR9jVZ45N3FhZfYMMYGorLCR8
 github.com/evanphx/json-patch v0.5.2/go.mod h1:ZWS5hhDbVDyob71nXKNL0+PWn6ToqBHMikGIFbs31qQ=
 github.com/felixge/httpsnoop v1.0.4 h1:NFTV2Zj1bL4mc9sqWACXbQFVBBg2W3GPvqp8/ESS2Wg=
 github.com/felixge/httpsnoop v1.0.4/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
-github.com/free5gc/openapi v1.2.0 h1:AOPqkkiWK7XJPdzWVohWsoGkLBt8OrVkQkU7xzvzbek=
-github.com/free5gc/openapi v1.2.0/go.mod h1:pGVJ27QZk4UGG4/1IioBtxwIKNdqOk7L9qcrXvdTjYU=
-github.com/free5gc/util v1.1.1 h1:gsjyI/XbHC9EChoMayHvV5kd92vDmp5/TvmBsOuHto4=
-github.com/free5gc/util v1.1.1/go.mod h1:numtzcUQDVMpotUjwAXgGHqHHyPWKiicZhQtW4Ijk18=
+github.com/free5gc/aper v1.0.6-0.20250102035630-3ddc831eed6a h1:PRapMdjqo96T7y8PHShUlirRDI0EaJNVrmdfQaHxOKY=
+github.com/free5gc/aper v1.0.6-0.20250102035630-3ddc831eed6a/go.mod h1:L4d0BJpHVOgiOC49aCz44mF0Vja3l+bcVSAs7i3CZ8s=
+github.com/free5gc/nas v1.1.5 h1:Nn+ykQHcc3nHzsufvm/MwQjZRZV9/woxnPeoAMjgjP4=
+github.com/free5gc/nas v1.1.5/go.mod h1:PjgawnhAVEMn/GRQw2FHkjRj0m2+9Bhbr1qrQPXCxwo=
+github.com/free5gc/ngap v1.0.10 h1:Fj0EcmG+7m3yPKVwmtBPwJupj/dBmPxTG2BNljDSJXQ=
+github.com/free5gc/ngap v1.0.10/go.mod h1:YB2lx46yopOOWi3dt/vEg198oHKUyQHo0qwenjdwhi4=
+github.com/free5gc/openapi v1.2.1 h1:8Y54anuunBb1HhKuw64qVMdq+iri66CZH8gSrXCIGIU=
+github.com/free5gc/openapi v1.2.1/go.mod h1:pGVJ27QZk4UGG4/1IioBtxwIKNdqOk7L9qcrXvdTjYU=
+github.com/free5gc/util v1.2.0 h1:qA6EwiM7uAaE2SUSZDkUaMEa1DVEBoMN+wEWhRj8cYs=
+github.com/free5gc/util v1.2.0/go.mod h1:eFZg7JCMlG1G5eCBbw+Gfs0SOBSIZv1OeuB1Sh0H+zE=
 github.com/gabriel-vasile/mimetype v1.4.3 h1:in2uUcidCuFcDKtdcBxlR0rJ1+fsokWf+uqxgUFjbI0=
 github.com/gabriel-vasile/mimetype v1.4.3/go.mod h1:d8uq/6HKRL6CGdk+aubisF/M5GcPfT7nKyLpA0lbSSk=
 github.com/gin-contrib/sse v0.1.0 h1:Y/yl/+YNO8GZSjAhjMsSuLt29uWRFHdHYUb5lYOV9qE=
@@ -56,10 +66,18 @@ github.com/h2non/parth v0.0.0-20190131123155-b4df798d6542/go.mod h1:Ow0tF8D4Kplb
 github.com/jessevdk/go-flags v1.4.0/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
 github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
 github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
+github.com/klauspost/compress v1.17.11 h1:In6xLpyWOi1+C7tXUUWv2ot1QvBjxevKAaI6IXrJmUc=
+github.com/klauspost/compress v1.17.11/go.mod h1:pMDklpSncoRMuLFrf1W9Ss9KT+0rH90U12bZKk7uwG0=
 github.com/klauspost/cpuid/v2 v2.0.9/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa0213Md/qVLRg=
 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 v0.3.1 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/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0SNc=
+github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+fNqagV/RAw=
 github.com/leodido/go-urn v1.4.0 h1:WT9HwE9SGECu3lg4d/dIA+jxlljEa1/ffXKmRjqdmIQ=
 github.com/leodido/go-urn v1.4.0/go.mod h1:bvxc+MVxLKB4z00jd1z+Dvzr47oO32F/QSNjSBOlFxI=
 github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
@@ -71,6 +89,8 @@ github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/reflect2 v1.0.2 h1:xBagoLtFs94CBntxluKeaWgTMpvLxC4ur3nMaC9Gz0M=
 github.com/modern-go/reflect2 v1.0.2/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjYzDa0/r8luk=
+github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 h1:C3w9PqII01/Oq1c1nUAm88MOHcQC9l5mIlSMApZMrHA=
+github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822/go.mod h1:+n7T8mK8HuQTcFwEeznm/DIxMOiR9yIdICNftLE1DvQ=
 github.com/nbio/st v0.0.0-20140626010706-e9e8d9816f32 h1:W6apQkHrMkS0Muv8G/TipAy/FJl/rCYT0+EuS8+Z0z4=
 github.com/nbio/st v0.0.0-20140626010706-e9e8d9816f32/go.mod h1:9wM+0iRr9ahx58uYLpLIr5fm8diHn0JbqRycJi6w0Ms=
 github.com/pelletier/go-toml/v2 v2.2.2 h1:aYUidT7k73Pcl9nb2gScu7NSrKCSHIDE89b3+6Wq+LM=
@@ -79,6 +99,16 @@ 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/prometheus/client_golang v1.21.0 h1:DIsaGmiaBkSangBgMtWdNfxbMNdku5IK6iNhrEqWvdA=
+github.com/prometheus/client_golang v1.21.0/go.mod h1:U9NM32ykUErtVBxdvD3zfi+EuFkkaBvMb09mIfe0Zgg=
+github.com/prometheus/client_model v0.6.1 h1:ZKSh/rekM+n3CeS952MLRAdFwIKqeY8b62p8ais2e9E=
+github.com/prometheus/client_model v0.6.1/go.mod h1:OrxVMOVHjw3lKMa8+x6HeMGkHMQyHDk9E3jmP2AmGiY=
+github.com/prometheus/common v0.62.0 h1:xasJaQlnWAeyHdUBeGjXmutelfJHWMRr+Fg4QszZ2Io=
+github.com/prometheus/common v0.62.0/go.mod h1:vyBcEuLSvWos9B1+CyL7JZ2up+uFzXhkqml0W5zIY1I=
+github.com/prometheus/procfs v0.15.1 h1:YagwOFzUgYfKKHX6Dr+sHT7km/hxC76UB0learggepc=
+github.com/prometheus/procfs v0.15.1/go.mod h1:fB45yRUv8NstnjriLhBQLuOUt+WW4BsoGhij/e3PBqk=
+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=
@@ -93,8 +123,9 @@ github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
 github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
 github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
-github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
 github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
+github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 github.com/tim-ywliu/nested-logrus-formatter v1.3.2 h1:jugNJ2/CNCI79SxOJCOhwUHeN3O7/7/bj+ZRGOFlCSw=
 github.com/tim-ywliu/nested-logrus-formatter v1.3.2/go.mod h1:oGPmcxZB65j9Wo7mCnQKSrKEJtVDqyjD666SGmyStXI=
 github.com/twitchyliquid64/golang-asm v0.15.1 h1:SU5vSMR7hnwNxj24w34ZyCi/FmDZTkS4MhqMhdFk5YI=
@@ -133,10 +164,11 @@ golang.org/x/sys v0.31.0 h1:ioabZlmFYtWhL+TRYpcnNlLwhyxaM9kWTDEmfnprqik=
 golang.org/x/sys v0.31.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
 golang.org/x/text v0.23.0 h1:D71I7dUrlY+VX0gQShAThNGHFxZ13dGLBHQLVl1mJlY=
 golang.org/x/text v0.23.0/go.mod h1:/BLNzu4aZCJ1+kcD0DNRotWKage4q2rGVAg4o22unh4=
-google.golang.org/protobuf v1.34.1 h1:9ddQBjfCyZPOHPUiPxpYESBLc+T8P3E+Vo4IbKZgFWg=
-google.golang.org/protobuf v1.34.1/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+google.golang.org/protobuf v1.36.1 h1:yBPeRvTftaleIgM3PZ/WBIZ7XM/eEYAaEyCwvyjq/gk=
+google.golang.org/protobuf v1.36.1/go.mod h1:9fA7Ob0pmnwhb644+1+CVWFRbNajQ6iRojtC/QF5bRE=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

internal/sbi/api_nssaiavailability.go

@@ -10,6 +10,7 @@ import (
 	"github.com/free5gc/nssf/internal/util"
 	"github.com/free5gc/openapi"
 	"github.com/free5gc/openapi/models"
+	"github.com/free5gc/util/metrics/sbi"
 )
 
 func (s *Server) getNssaiAvailabilityRoutes() []Route {
@@ -86,7 +87,7 @@ func (s *Server) NSSAIAvailabilityDelete(c *gin.Context) {
 			Status: http.StatusBadRequest,
 			Cause:  "UNSPECIFIED", // TODO: Check if this is the correct cause
 		}
-
+		c.Set(sbi.IN_PB_DETAILS_CTX_STR, problemDetails.Cause)
 		util.GinProblemJson(c, problemDetails)
 		return
 	}
@@ -106,7 +107,7 @@ func (s *Server) NSSAIAvailabilityPatch(c *gin.Context) {
 			Status: http.StatusBadRequest,
 			Cause:  "UNSPECIFIED", // TODO: Check if this is the correct cause
 		}
-
+		c.Set(sbi.IN_PB_DETAILS_CTX_STR, problemDetails.Cause)
 		util.GinProblemJson(c, problemDetails)
 		return
 	}
@@ -119,7 +120,7 @@ func (s *Server) NSSAIAvailabilityPatch(c *gin.Context) {
 			Status: http.StatusInternalServerError,
 			Cause:  "SYSTEM_FAILURE",
 		}
-
+		c.Set(sbi.IN_PB_DETAILS_CTX_STR, problemDetails.Cause)
 		util.GinProblemJson(c, problemDetails)
 		return
 	}
@@ -131,6 +132,7 @@ func (s *Server) NSSAIAvailabilityPatch(c *gin.Context) {
 		}
 
 		logger.SBILog.Errorf("Error deserializing patch document: %+v", err)
+		c.Set(sbi.IN_PB_DETAILS_CTX_STR, problemDetails.Cause)
 		util.GinProblemJson(c, problemDetails)
 		return
 	}
@@ -160,7 +162,7 @@ func (s *Server) NSSAIAvailabilityPut(c *gin.Context) {
 			Cause:         "MALFORMED_REQUEST",
 			InvalidParams: util.BindErrorInvalidParamsMessages(err),
 		}
-
+		c.Set(sbi.IN_PB_DETAILS_CTX_STR, problemDetails.Cause)
 		util.GinProblemJson(c, problemDetails)
 		return
 	}
@@ -172,7 +174,7 @@ func (s *Server) NSSAIAvailabilityPut(c *gin.Context) {
 			Status: http.StatusInternalServerError,
 			Cause:  "SYSTEM_FAILURE",
 		}
-
+		c.Set(sbi.IN_PB_DETAILS_CTX_STR, problemDetails.Cause)
 		util.GinProblemJson(c, problemDetails)
 		return
 	}
@@ -184,6 +186,7 @@ func (s *Server) NSSAIAvailabilityPut(c *gin.Context) {
 		}
 
 		logger.SBILog.Errorf("Error deserializing NSSAI availability info: %+v", err)
+		c.Set(sbi.IN_PB_DETAILS_CTX_STR, problemDetails.Cause)
 		util.GinProblemJson(c, problemDetails)
 		return
 	}
@@ -207,7 +210,7 @@ func (s *Server) NSSAIAvailabilityPost(c *gin.Context) {
 			Cause:  "SYSTEM_FAILURE",
 		}
 		logger.NssaiavailLog.Errorf("Get Request Body error: %+v", err)
-
+		c.Set(sbi.IN_PB_DETAILS_CTX_STR, problemDetail.Cause)
 		util.GinProblemJson(c, problemDetail)
 		return
 	}
@@ -221,7 +224,7 @@ func (s *Server) NSSAIAvailabilityPost(c *gin.Context) {
 			Detail: problemDetail,
 		}
 		logger.NssaiavailLog.Errorln(problemDetail)
-
+		c.Set(sbi.IN_PB_DETAILS_CTX_STR, rsp.Title)
 		util.GinProblemJson(c, rsp)
 		return
 	}
@@ -240,7 +243,7 @@ func (s *Server) NSSAIAvailabilityUnsubscribeDelete(c *gin.Context) {
 			Status: http.StatusBadRequest,
 			Cause:  "UNSPECIFIED", // TODO: Check if this is the correct cause
 		}
-
+		c.Set(sbi.IN_PB_DETAILS_CTX_STR, problemDetails.Cause)
 		util.GinProblemJson(c, problemDetails)
 		return
 	}

internal/sbi/api_nsselection.go

@@ -9,6 +9,7 @@ import (
 	"github.com/free5gc/nssf/internal/sbi/processor"
 	"github.com/free5gc/nssf/internal/util"
 	"github.com/free5gc/openapi/models"
+	"github.com/free5gc/util/metrics/sbi"
 )
 
 func (s *Server) getNsSelectionRoutes() []Route {
@@ -44,6 +45,7 @@ func (s *Server) NetworkSliceInformationGet(c *gin.Context) {
 			Instance:      "",
 			InvalidParams: util.BindErrorInvalidParamsMessages(err),
 		}
+		c.Set(sbi.IN_PB_DETAILS_CTX_STR, problemDetail.Title)
 		util.GinProblemJson(c, problemDetail)
 		return
 	}

internal/sbi/consumer/consumer.go

@@ -3,6 +3,7 @@ package consumer
 import (
 	"github.com/free5gc/nssf/pkg/app"
 	"github.com/free5gc/openapi/nrf/NFManagement"
+	sbi_metrics "github.com/free5gc/util/metrics/sbi"
 )
 
 type Consumer struct {
@@ -14,6 +15,7 @@ type Consumer struct {
 func NewConsumer(nssf app.NssfApp) *Consumer {
 	configuration := NFManagement.NewConfiguration()
 	configuration.SetBasePath(nssf.Context().NrfUri)
+	configuration.SetMetrics(sbi_metrics.SbiMetricHook)
 	nrfService := &NrfService{
 		nrfNfMgmtClient: NFManagement.NewAPIClient(configuration),
 	}

internal/sbi/processor/nssaiavailability_store.go

@@ -21,6 +21,7 @@ import (
 	"github.com/free5gc/nssf/internal/util"
 	"github.com/free5gc/nssf/pkg/factory"
 	"github.com/free5gc/openapi/models"
+	"github.com/free5gc/util/metrics/sbi"
 )
 
 func (p *Processor) NssaiAvailabilityNfInstanceDelete(c *gin.Context, nfId string) {
@@ -41,6 +42,7 @@ func (p *Processor) NssaiAvailabilityNfInstanceDelete(c *gin.Context, nfId strin
 		Status: http.StatusNotFound,
 		Detail: fmt.Sprintf("AMF ID '%s' does not exist", nfId),
 	}
+	c.Set(sbi.IN_PB_DETAILS_CTX_STR, problemDetails.Title)
 	util.GinProblemJson(c, problemDetails)
 }
 
@@ -90,6 +92,7 @@ func (p *Processor) NssaiAvailabilityNfInstancePatch(
 			Status: http.StatusNotFound,
 			Detail: fmt.Sprintf("AMF ID '%s' does not exist", nfId),
 		}
+		c.Set(sbi.IN_PB_DETAILS_CTX_STR, problemDetails.Title)
 		util.GinProblemJson(c, problemDetails)
 		return
 	}
@@ -118,6 +121,7 @@ func (p *Processor) NssaiAvailabilityNfInstancePatch(
 			Status: http.StatusBadRequest,
 			Detail: err.Error(),
 		}
+		c.Set(sbi.IN_PB_DETAILS_CTX_STR, problemDetails.Title)
 		util.GinProblemJson(c, problemDetails)
 		return
 	}
@@ -129,6 +133,7 @@ func (p *Processor) NssaiAvailabilityNfInstancePatch(
 			Status: http.StatusConflict,
 			Detail: err.Error(),
 		}
+		c.Set(sbi.IN_PB_DETAILS_CTX_STR, problemDetails.Title)
 		util.GinProblemJson(c, problemDetails)
 		return
 	}
@@ -142,6 +147,7 @@ func (p *Processor) NssaiAvailabilityNfInstancePatch(
 			Status: http.StatusBadRequest,
 			Detail: err.Error(),
 		}
+		c.Set(sbi.IN_PB_DETAILS_CTX_STR, problemDetails.Title)
 		util.GinProblemJson(c, problemDetails)
 		return
 	}
@@ -175,7 +181,7 @@ func (p *Processor) NssaiAvailabilityNfInstanceUpdate(
 				Detail: "S-NSSAI in Requested NSSAI is not supported in PLMN",
 				Cause:  "SNSSAI_NOT_SUPPORTED",
 			}
-
+			c.Set(sbi.IN_PB_DETAILS_CTX_STR, problemDetails.Cause)
 			util.GinProblemJson(c, problemDetails)
 			return
 		}

internal/sbi/processor/nssaiavailability_subscription.go

@@ -19,6 +19,7 @@ import (
 	"github.com/free5gc/nssf/internal/util"
 	"github.com/free5gc/nssf/pkg/factory"
 	"github.com/free5gc/openapi/models"
+	"github.com/free5gc/util/metrics/sbi"
 )
 
 // Get available subscription ID from configuration
@@ -64,7 +65,7 @@ func (p *Processor) NssaiAvailabilitySubscriptionCreate(
 			Status: http.StatusNotFound,
 			Detail: err.Error(),
 		}
-
+		c.Set(sbi.IN_PB_DETAILS_CTX_STR, problemDetails.Title)
 		util.GinProblemJson(c, problemDetails)
 		return
 	}
@@ -106,6 +107,6 @@ func (p *Processor) NssaiAvailabilitySubscriptionUnsubscribe(c *gin.Context, sub
 		Status: http.StatusNotFound,
 		Detail: fmt.Sprintf("Subscription ID '%s' is not available", subscriptionId),
 	}
-
+	c.Set(sbi.IN_PB_DETAILS_CTX_STR, problemDetails.Title)
 	util.GinProblemJson(c, problemDetails)
 }