Первая реализация, добавил поддержку конфига

.gitignore

@@ -25,3 +25,4 @@ go.work.sum
 # env file
 .env
 
+config.yaml

config.yaml.example

@@ -0,0 +1,6 @@
+target:
+  instance: 
+  userID: 
+exporter:
+  listen: 0.0.0.0
+  port: 9666

config/config.go

@@ -0,0 +1,42 @@
+package config
+
+import (
+	"log"
+	"os"
+
+	"gopkg.in/yaml.v3"
+)
+
+type target struct {
+	Instance string `yaml:"instance"`
+	UserID   string `yaml:"userID"`
+}
+
+type exporter struct {
+	Listen string `yaml:"listen"`
+	Port   string `yaml:"port"`
+}
+
+type InstanceVars struct {
+	Target   target   `yaml:"target"`
+	Exporter exporter `yaml:"exporter"`
+}
+
+func OpenFile(path string) []byte {
+	file, err := os.ReadFile(path)
+	if err != nil {
+		log.Println(err)
+	}
+	return file
+}
+
+func UnmYamlConfig(path string) InstanceVars {
+	fileContent := OpenFile(path)
+	var config InstanceVars
+
+	err := yaml.Unmarshal(fileContent, &config)
+	if err != nil {
+		log.Println(err)
+	}
+	return config
+}

go.mod

@@ -0,0 +1,20 @@
+module pleroma_stats_exporter
+
+go 1.21
+
+toolchain go1.23.4
+
+require github.com/prometheus/client_golang v1.20.5
+
+require gopkg.in/yaml.v3 v3.0.1
+
+require (
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // 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
+	golang.org/x/sys v0.29.0 // indirect
+	google.golang.org/protobuf v1.36.4 // indirect
+)

go.sum

@@ -0,0 +1,31 @@
+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/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
+github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
+github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
+github.com/klauspost/compress v1.17.9 h1:6KIumPrER1LHsvBVuDa0r5xaG0Es51mhhB9BQB2qeMA=
+github.com/klauspost/compress v1.17.9/go.mod h1:Di0epgTjJY877eYKx5yC51cX2A2Vl2ibi7bDH9ttBbw=
+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/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 v1.20.5 h1:cxppBPuYhUnsO6yo/aoRol4L7q7UFfdm+bR9r+8l63Y=
+github.com/prometheus/client_golang v1.20.5/go.mod h1:PIEt8X02hGcP8JWbeHyeZ53Y/jReSnHgO035n//V5WE=
+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/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
+github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+golang.org/x/sys v0.29.0 h1:TPYlXGxvx1MGTn2GiZDhnjPA9wZzZeGKHHmKhHYvgaU=
+golang.org/x/sys v0.29.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+google.golang.org/protobuf v1.36.4 h1:6A3ZDJHn/eNqc1i+IdefRzy/9PokBTPvcqMySR7NNIM=
+google.golang.org/protobuf v1.36.4/go.mod h1:9fA7Ob0pmnwhb644+1+CVWFRbNajQ6iRojtC/QF5bRE=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

main.go

@@ -2,13 +2,39 @@ package main
 
 import (
 	"encoding/json"
-	"fmt"
 	"io"
 	"log"
 	"net/http"
+	"pleroma_stats_exporter/config"
+
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
 )
 
-type JsonInterface interface{}
+type metrics struct {
+	InstancesCount prometheus.Gauge
+	FollowersCount prometheus.Gauge
+}
+
+func SetMetricsOpts(reg prometheus.Registerer) *metrics {
+	metricsOpts := &metrics{
+		InstancesCount: prometheus.NewGauge(
+			prometheus.GaugeOpts{
+				Name: "pleroma_instances_count",
+				Help: "Количество инстансов",
+			},
+		),
+		FollowersCount: prometheus.NewGauge(
+			prometheus.GaugeOpts{
+				Name: "pleroma_user_followers",
+				Help: "Количество подписчиков",
+			},
+		),
+	}
+	reg.MustRegister(metricsOpts.InstancesCount)
+	reg.MustRegister(metricsOpts.FollowersCount)
+	return metricsOpts
+}
 
 func getJson(url string) string {
 	resp, err := http.Get(url)
@@ -17,11 +43,14 @@ func getJson(url string) string {
 	}
 	defer resp.Body.Close()
 	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		log.Println(err)
+	}
 	return string(body)
 }
 
-func unmJson(jsonString string) JsonInterface {
+func unmJson(jsonString string) map[string]any {
-	var decodedJson JsonInterface
+	decodedJson := map[string]any{}
 	err := json.Unmarshal([]byte(jsonString), &decodedJson)
 	if err != nil {
 		log.Println(err)
@@ -30,6 +59,16 @@ func unmJson(jsonString string) JsonInterface {
 }
 
 func main() {
-	fmt.Println(unmJson(getJson("https://pleroma.catgirls.asia/api/v1/instance")))
+	confFile := config.UnmYamlConfig("config.yaml")
 
+	reg := prometheus.NewRegistry()
+	instanceMetrics := SetMetricsOpts(reg)
+	instanceStat := unmJson(getJson("https://" + confFile.Target.Instance + "/api/v1/instance"))["stats"]
+	instanceCount := instanceStat.(map[string]interface{})
+	userFollowers := unmJson(getJson("https://" + confFile.Target.Instance + "/api/v1/accounts/" + confFile.Target.UserID))["followers_count"]
+	instanceMetrics.InstancesCount.Set(instanceCount["domain_count"].(float64))
+	instanceMetrics.FollowersCount.Set(userFollowers.(float64))
+
+	http.Handle("/metrics", promhttp.HandlerFor(reg, promhttp.HandlerOpts{Registry: reg}))
+	log.Fatal(http.ListenAndServe(confFile.Exporter.Listen+":"+confFile.Exporter.Port, nil))
 }