[chore] update otel libraries (#3740)

* chore: update otel dependencies

* refactor: combine tracing & metrics in observability package

* chore: update example tracing compose file

1 files changed, 0 insertions, 138 deletions

diff --git a/internal/metrics/metrics.go b/internal/metrics/metrics.go
deleted file mode 100644
index e22a67dad..000000000
--- a/internal/metrics/metrics.go
+++ /dev/null
@@ -1,138 +0,0 @@
-// GoToSocial
-// Copyright (C) GoToSocial Authors admin@gotosocial.org
-// SPDX-License-Identifier: AGPL-3.0-or-later
-//
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Affero General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU Affero General Public License for more details.
-//
-// You should have received a copy of the GNU Affero General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-//go:build !nometrics
-
-package metrics
-
-import (
-	"context"
-	"errors"
-
-	"github.com/gin-gonic/gin"
-	"github.com/superseriousbusiness/gotosocial/internal/config"
-	"github.com/superseriousbusiness/gotosocial/internal/db"
-	"github.com/technologize/otel-go-contrib/otelginmetrics"
-	"github.com/uptrace/bun"
-	"github.com/uptrace/bun/extra/bunotel"
-	"go.opentelemetry.io/otel"
-	"go.opentelemetry.io/otel/exporters/prometheus"
-	"go.opentelemetry.io/otel/metric"
-	sdk "go.opentelemetry.io/otel/sdk/metric"
-	"go.opentelemetry.io/otel/sdk/resource"
-	semconv "go.opentelemetry.io/otel/semconv/v1.24.0"
-)
-
-const (
-	serviceName = "GoToSocial"
-)
-
-func Initialize(db db.DB) error {
-	if !config.GetMetricsEnabled() {
-		return nil
-	}
-
-	if config.GetMetricsAuthEnabled() {
-		if config.GetMetricsAuthPassword() == "" || config.GetMetricsAuthUsername() == "" {
-			return errors.New("metrics-auth-username and metrics-auth-password must be set when metrics-auth-enabled is true")
-		}
-	}
-
-	r, _ := resource.Merge(
-		resource.Default(),
-		resource.NewSchemaless(
-			semconv.ServiceName(serviceName),
-			semconv.ServiceVersion(config.GetSoftwareVersion()),
-		),
-	)
-
-	prometheusExporter, err := prometheus.New()
-	if err != nil {
-		return err
-	}
-
-	meterProvider := sdk.NewMeterProvider(
-		sdk.WithResource(r),
-		sdk.WithReader(prometheusExporter),
-	)
-
-	otel.SetMeterProvider(meterProvider)
-
-	meter := meterProvider.Meter(serviceName)
-
-	thisInstance := config.GetHost()
-
-	_, err = meter.Int64ObservableGauge(
-		"gotosocial.instance.total_users",
-		metric.WithDescription("Total number of users on this instance"),
-		metric.WithInt64Callback(func(c context.Context, o metric.Int64Observer) error {
-			userCount, err := db.CountInstanceUsers(c, thisInstance)
-			if err != nil {
-				return err
-			}
-			o.Observe(int64(userCount))
-			return nil
-		}),
-	)
-	if err != nil {
-		return err
-	}
-
-	_, err = meter.Int64ObservableGauge(
-		"gotosocial.instance.total_statuses",
-		metric.WithDescription("Total number of statuses on this instance"),
-		metric.WithInt64Callback(func(c context.Context, o metric.Int64Observer) error {
-			statusCount, err := db.CountInstanceStatuses(c, thisInstance)
-			if err != nil {
-				return err
-			}
-			o.Observe(int64(statusCount))
-			return nil
-		}),
-	)
-	if err != nil {
-		return err
-	}
-
-	_, err = meter.Int64ObservableGauge(
-		"gotosocial.instance.total_federating_instances",
-		metric.WithDescription("Total number of other instances this instance is federating with"),
-		metric.WithInt64Callback(func(c context.Context, o metric.Int64Observer) error {
-			federatingCount, err := db.CountInstanceDomains(c, thisInstance)
-			if err != nil {
-				return err
-			}
-			o.Observe(int64(federatingCount))
-			return nil
-		}),
-	)
-	if err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func InstrumentGin() gin.HandlerFunc {
-	return otelginmetrics.Middleware(serviceName)
-}
-
-func InstrumentBun() bun.QueryHook {
-	return bunotel.NewQueryHook(
-		bunotel.WithMeterProvider(otel.GetMeterProvider()),
-	)
-}