mirror of
https://github.com/superseriousbusiness/gotosocial.git
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90a5425fe9
Daenney is a dummy and forgot to add these when he revamped the OTEL stuff. Reviewed-on: https://codeberg.org/superseriousbusiness/gotosocial/pulls/4137 Co-authored-by: Daenney <daenney@noreply.codeberg.org> Co-committed-by: Daenney <daenney@noreply.codeberg.org>
126 lines
3.4 KiB
Go
126 lines
3.4 KiB
Go
// GoToSocial
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// Copyright (C) GoToSocial Authors admin@gotosocial.org
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// SPDX-License-Identifier: AGPL-3.0-or-later
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//go:build !nootel
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package observability
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import (
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"context"
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"fmt"
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"code.superseriousbusiness.org/gotosocial/internal/config"
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"code.superseriousbusiness.org/gotosocial/internal/db"
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"github.com/gin-gonic/gin"
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"github.com/technologize/otel-go-contrib/otelginmetrics"
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"go.opentelemetry.io/contrib/exporters/autoexport"
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"go.opentelemetry.io/contrib/instrumentation/runtime"
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"go.opentelemetry.io/otel"
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"go.opentelemetry.io/otel/metric"
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sdk "go.opentelemetry.io/otel/sdk/metric"
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"go.opentelemetry.io/otel/sdk/metric/exemplar"
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)
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func InitializeMetrics(ctx context.Context, db db.DB) error {
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if !config.GetMetricsEnabled() {
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return nil
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}
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r, err := Resource()
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if err != nil {
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// this can happen if semconv versioning is out-of-sync
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return fmt.Errorf("building tracing resource: %w", err)
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}
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mt, err := autoexport.NewMetricReader(ctx)
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if err != nil {
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return err
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}
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meterProvider := sdk.NewMeterProvider(
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sdk.WithExemplarFilter(exemplar.AlwaysOffFilter),
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sdk.WithResource(r),
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sdk.WithReader(mt),
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)
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otel.SetMeterProvider(meterProvider)
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if err := runtime.Start(
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runtime.WithMeterProvider(meterProvider),
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); err != nil {
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return err
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}
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meter := meterProvider.Meter(serviceName)
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thisInstance := config.GetHost()
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_, err = meter.Int64ObservableGauge(
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"gotosocial.instance.total_users",
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metric.WithDescription("Total number of users on this instance"),
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metric.WithInt64Callback(func(c context.Context, o metric.Int64Observer) error {
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userCount, err := db.CountInstanceUsers(c, thisInstance)
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if err != nil {
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return err
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}
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o.Observe(int64(userCount))
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return nil
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}),
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)
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if err != nil {
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return err
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}
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_, err = meter.Int64ObservableGauge(
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"gotosocial.instance.total_statuses",
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metric.WithDescription("Total number of statuses on this instance"),
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metric.WithInt64Callback(func(c context.Context, o metric.Int64Observer) error {
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statusCount, err := db.CountInstanceStatuses(c, thisInstance)
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if err != nil {
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return err
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}
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o.Observe(int64(statusCount))
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return nil
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}),
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)
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if err != nil {
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return err
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}
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_, err = meter.Int64ObservableGauge(
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"gotosocial.instance.total_federating_instances",
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metric.WithDescription("Total number of other instances this instance is federating with"),
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metric.WithInt64Callback(func(c context.Context, o metric.Int64Observer) error {
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federatingCount, err := db.CountInstanceDomains(c, thisInstance)
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if err != nil {
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return err
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}
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o.Observe(int64(federatingCount))
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return nil
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}),
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)
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if err != nil {
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return err
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}
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return nil
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}
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func MetricsMiddleware() gin.HandlerFunc {
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return otelginmetrics.Middleware(serviceName)
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}
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