/
hooks.go
136 lines (108 loc) · 3.18 KB
/
hooks.go
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package postgres
import (
"context"
"math"
"time"
"github.com/go-pg/pg/v10"
"github.com/opentracing/opentracing-go"
olog "github.com/opentracing/opentracing-go/log"
"github.com/prometheus/client_golang/prometheus"
"github.com/rs/zerolog"
"github.com/pace/bricks/maintenance/log"
)
type QueryLogger struct{}
func (QueryLogger) BeforeQuery(_ context.Context, _ *pg.QueryEvent) (context.Context, error) {
return nil, nil
}
func (QueryLogger) AfterQuery(ctx context.Context, event *pg.QueryEvent) error {
q, qe := event.UnformattedQuery()
if qe == nil {
if !(cfg.LogRead || cfg.LogWrite) {
return nil
}
// we can only and should only perfom the following check if we have the information availaible
mode := determineQueryMode(string(q))
if mode == readMode && !cfg.LogRead {
return nil
}
if mode == writeMode && !cfg.LogWrite {
return nil
}
}
dur := float64(time.Since(event.StartTime)) / float64(time.Millisecond)
// check if log context is given
var logger *zerolog.Logger
if ctx != nil {
logger = log.Ctx(ctx)
} else {
logger = log.Logger()
}
// add general info
le := logger.Debug().
Float64("duration", dur).
Str("sentry:category", "postgres")
// add error or result set info
if event.Err != nil {
le = le.Err(event.Err)
} else {
le = le.Int("affected", event.Result.RowsAffected()).
Int("rows", event.Result.RowsReturned())
}
if qe != nil {
// this is only a display issue not a "real" issue
le.Msgf("%v", qe)
}
le.Msg(string(q))
return nil
}
type OpenTracingAdapter struct{}
func (OpenTracingAdapter) BeforeQuery(_ context.Context, _ *pg.QueryEvent) (context.Context, error) {
return nil, nil
}
func (OpenTracingAdapter) AfterQuery(ctx context.Context, event *pg.QueryEvent) error {
// start span with general info
q, qe := event.UnformattedQuery()
if qe != nil {
// this is only a display issue not a "real" issue
q = []byte(qe.Error())
}
span, _ := opentracing.StartSpanFromContext(event.DB.Context(), "sql: "+getQueryType(string(q)),
opentracing.StartTime(event.StartTime))
span.SetTag("db.system", "postgres")
fields := []olog.Field{
olog.String("query", string(q)),
}
// add error or result set info
if event.Err != nil {
fields = append(fields, olog.Error(event.Err))
} else {
fields = append(fields,
olog.Int("affected", event.Result.RowsAffected()),
olog.Int("rows", event.Result.RowsReturned()))
}
span.LogFields(fields...)
span.Finish()
return nil
}
type MetricsAdapter struct {
opts *pg.Options
}
func (MetricsAdapter) BeforeQuery(_ context.Context, _ *pg.QueryEvent) (context.Context, error) {
return nil, nil
}
func (m MetricsAdapter) AfterQuery(ctx context.Context, event *pg.QueryEvent) error {
dur := float64(time.Since(event.StartTime)) / float64(time.Millisecond)
labels := prometheus.Labels{
"database": m.opts.Addr + "/" + m.opts.Database,
}
metricQueryTotal.With(labels).Inc()
if event.Err != nil {
metricQueryFailed.With(labels).Inc()
} else {
r := event.Result
metricQueryRowsTotal.With(labels).Add(float64(r.RowsReturned()))
metricQueryAffectedTotal.With(labels).Add(math.Max(0, float64(r.RowsAffected())))
}
metricQueryDurationSeconds.With(labels).Observe(dur)
return nil
}