Merge pull request #38 from FachschaftMathPhysInfo/35-export-otel-tra…

…ces-from-backend

35 export otel traces from backend

docker-compose.yml

@@ -9,6 +9,12 @@ services:
     volumes:
       - data:/var/lib/postgresql/data
     env_file: .env.local
+
+  otel-collector:
+    image: otel/opentelemetry-collector-contrib
+    volumes:
+      - ./otel-collector-config.yaml:/etc/otelcol-contrib/config.yaml
+
   server:
     build:
       context: ./server
@@ -19,6 +25,8 @@ services:
       - 8080:8080
     depends_on:
       - postgres
+      - otel-collector
+
   frontend:
     build:
       context: ./frontend

otel-collector-config.yaml

@@ -0,0 +1,18 @@
+receivers:
+  otlp:
+    protocols:
+      grpc:
+        endpoint: "0.0.0.0:4317"
+processors:
+exporters:
+  debug:
+    verbosity: detailed
+    sampling_initial: 5
+    sampling_thereafter: 200
+
+service:
+  pipelines:
+    traces:
+      receivers: [otlp]
+      processors: []
+      exporters: [debug]

server/Dockerfile

@@ -11,6 +11,7 @@ COPY models ./models
 COPY db ./db
 COPY email ./email
 COPY maintenance ./maintenance
+COPY tracing ./tracing
 
 RUN CGO_ENABLED=0 go build -a -o graphql-server server.go
 

server/db/init.go

@@ -10,10 +10,11 @@ import (
 	"github.com/uptrace/bun"
 	"github.com/uptrace/bun/dialect/pgdialect"
 	"github.com/uptrace/bun/driver/pgdriver"
-	"github.com/uptrace/bun/extra/bundebug"
+	"github.com/uptrace/bun/extra/bunotel"
+	"go.opentelemetry.io/otel/sdk/trace"
 )
 
-func Init(ctx context.Context) (*bun.DB, *sql.DB, error) {
+func Init(ctx context.Context, tracer *trace.TracerProvider) (*bun.DB, *sql.DB, error) {
 	db_user := os.Getenv("POSTGRES_USER")
 	db_pw := os.Getenv("POSTGRES_PASSWORD")
 	db_db := os.Getenv("POSTGRES_DB")
@@ -26,7 +27,10 @@ func Init(ctx context.Context) (*bun.DB, *sql.DB, error) {
 
 	db := bun.NewDB(sqldb, pgdialect.New())
 
-	db.AddQueryHook(bundebug.NewQueryHook(bundebug.WithVerbose(true)))
+	db.AddQueryHook(bunotel.NewQueryHook(
+    bunotel.WithFormattedQueries(true),
+    bunotel.WithTracerProvider(tracer),
+  ))
 
 	relations := []interface{}{
 		(*models.EventToTutor)(nil),

server/go.mod

@@ -4,15 +4,24 @@ go 1.22.4
 
 require (
 	github.com/99designs/gqlgen v0.17.49
-	github.com/go-chi/chi/v5 v5.0.14
+	github.com/go-chi/chi/v5 v5.1.0
 	github.com/matcornic/hermes/v2 v2.1.0
+	github.com/ravilushqa/otelgqlgen v0.16.0
+	github.com/riandyrn/otelchi v0.9.0
 	github.com/robfig/cron/v3 v3.0.1
 	github.com/rs/cors v1.11.0
 	github.com/uptrace/bun v1.2.1
 	github.com/uptrace/bun/dialect/pgdialect v1.2.1
 	github.com/uptrace/bun/driver/pgdriver v1.2.1
-	github.com/uptrace/bun/extra/bundebug v1.2.1
+	github.com/uptrace/bun/extra/bunotel v1.2.1
 	github.com/vektah/gqlparser/v2 v2.5.16
+	go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.53.0
+	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.53.0
+	go.opentelemetry.io/otel v1.28.0
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.28.0
+	go.opentelemetry.io/otel/sdk v1.28.0
+	go.opentelemetry.io/otel/trace v1.28.0
+	google.golang.org/grpc v1.65.0
 	gopkg.in/gomail.v2 v2.0.0-20160411212932-81ebce5c23df
 )
 
@@ -23,19 +32,20 @@ require (
 	github.com/PuerkitoBio/goquery v1.9.2 // indirect
 	github.com/agnivade/levenshtein v1.1.1 // indirect
 	github.com/andybalholm/cascadia v1.3.2 // indirect
+	github.com/cenkalti/backoff/v4 v4.3.0 // indirect
 	github.com/cpuguy83/go-md2man/v2 v2.0.4 // indirect
-	github.com/fatih/color v1.16.0 // indirect
+	github.com/felixge/httpsnoop v1.0.4 // indirect
+	github.com/go-logr/logr v1.4.2 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/gorilla/css v1.0.1 // indirect
 	github.com/gorilla/websocket v1.5.3 // indirect
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.20.0 // indirect
 	github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
 	github.com/huandu/xstrings v1.5.0 // indirect
 	github.com/imdario/mergo v0.3.16 // indirect
 	github.com/jaytaylor/html2text v0.0.0-20230321000545-74c2419ad056 // indirect
 	github.com/jinzhu/inflection v1.0.0 // indirect
-	github.com/kr/text v0.2.0 // indirect
-	github.com/mattn/go-colorable v0.1.13 // indirect
-	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/mattn/go-runewidth v0.0.15 // indirect
 	github.com/mitchellh/copystructure v1.2.0 // indirect
 	github.com/mitchellh/mapstructure v1.5.0 // indirect
@@ -46,19 +56,27 @@ require (
 	github.com/sosodev/duration v1.3.1 // indirect
 	github.com/ssor/bom v0.0.0-20170718123548-6386211fdfcf // indirect
 	github.com/tmthrgd/go-hex v0.0.0-20190904060850-447a3041c3bc // indirect
+	github.com/uptrace/opentelemetry-go-extra/otelsql v0.2.4 // indirect
 	github.com/urfave/cli/v2 v2.27.2 // indirect
 	github.com/vanng822/css v1.0.1 // indirect
 	github.com/vanng822/go-premailer v1.21.0 // indirect
 	github.com/vmihailenco/msgpack/v5 v5.4.1 // indirect
 	github.com/vmihailenco/tagparser/v2 v2.0.0 // indirect
 	github.com/xrash/smetrics v0.0.0-20240312152122-5f08fbb34913 // indirect
+	go.opentelemetry.io/contrib v1.27.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.28.0 // indirect
+	go.opentelemetry.io/otel/metric v1.28.0 // indirect
+	go.opentelemetry.io/proto/otlp v1.3.1 // indirect
 	golang.org/x/crypto v0.24.0 // indirect
 	golang.org/x/mod v0.18.0 // indirect
 	golang.org/x/net v0.26.0 // indirect
 	golang.org/x/sync v0.7.0 // indirect
 	golang.org/x/sys v0.21.0 // indirect
 	golang.org/x/text v0.16.0 // indirect
 	golang.org/x/tools v0.22.0 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20240701130421-f6361c86f094 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20240701130421-f6361c86f094 // indirect
+	google.golang.org/protobuf v1.34.2 // indirect
 	gopkg.in/alexcesaro/quotedprintable.v3 v3.0.0-20150716171945-2caba252f4dc // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 	mellium.im/sasl v0.3.1 // indirect