SansanandClaude Opus 5.5
f79f51ea4c
Metrics are served on METRICS_PORT (default 2112, "off" to disable), never on the public port. Besides the Go runtime and process metrics this adds: - http_requests_total and http_request_duration_seconds per route pattern, from an Echo middleware. - musicserver_songs_requested_total and musicserver_songs_played_total by pick mode (random, low, classic). The mode is now stored with each queued song (migration 000006, not released yet). - Library size, sync duration, last successful sync, broken songs from the last full sync, and the database connection pool. Refs #35, #36, #37 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
34 lines
1.1 KiB
Go
34 lines
1.1 KiB
Go
package metrics
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import (
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"context"
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"strings"
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"testing"
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"github.com/jackc/pgx/v5/pgxpool"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/testutil"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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func TestPoolCollector(t *testing.T) {
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// The pool connects lazily, so no database is needed to read its statistics.
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pool, err := pgxpool.New(context.Background(), "postgres://user:pass@127.0.0.1:1/music?pool_max_conns=7")
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require.NoError(t, err)
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t.Cleanup(pool.Close)
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registry := prometheus.NewRegistry()
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registry.MustRegister(NewPoolCollector(pool))
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assert.Equal(t, 11, testutil.CollectAndCount(registry))
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require.NoError(t, testutil.GatherAndCompare(registry, strings.NewReader(`
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# HELP musicserver_db_pool_max_conns Most connections the pool opens.
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# TYPE musicserver_db_pool_max_conns gauge
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musicserver_db_pool_max_conns 7
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# HELP musicserver_db_pool_acquired_conns Connections in use.
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# TYPE musicserver_db_pool_acquired_conns gauge
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musicserver_db_pool_acquired_conns 0
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`), "musicserver_db_pool_max_conns", "musicserver_db_pool_acquired_conns"))
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}
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