142 lines
3.5 KiB
Go
142 lines
3.5 KiB
Go
package unitel
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import (
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"context"
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"database/sql"
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"database/sql/driver"
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"fmt"
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"strings"
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"time"
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pgx "github.com/jackc/pgx/v5/stdlib"
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"github.com/qustavo/sqlhooks/v2"
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"github.com/rs/zerolog/log"
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"go.opentelemetry.io/otel/attribute"
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"go.opentelemetry.io/otel/metric"
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semconv "go.opentelemetry.io/otel/semconv/v1.26.0"
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"go.opentelemetry.io/otel/trace"
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)
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const (
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pgxClientID = libBase + "#TracedPGx"
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TracedPGxDriverName = "pgx-traced"
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)
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type dbCtxStart struct{}
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type tracedPgxHooks struct {
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t *Telemetry
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printQueries bool
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tracer trace.Tracer
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mDuration metric.Float64Histogram
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}
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func (h *tracedPgxHooks) Before(ctx context.Context, query string, args ...interface{}) (context.Context, error) {
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cleanedQuery := strings.ReplaceAll(query, "\n", " ")
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cleanedQuery = strings.ReplaceAll(cleanedQuery, "\t", " ")
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cleanedQuery = strings.ReplaceAll(cleanedQuery, " ", " ")
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cleanedQuery = strings.TrimSpace(cleanedQuery)
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operation := strings.Split(query, " ")[0]
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attrs := []attribute.KeyValue{
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semconv.DBSystemPostgreSQL,
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semconv.DBOperationName(operation),
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/* Sentry */
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attribute.String("db.statement", cleanedQuery),
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attribute.StringSlice("db.params", formatArgs(args)),
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/* OpenTelemetry */
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attribute.String("db.query.text", cleanedQuery),
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}
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for i, arg := range args {
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attrs = append(attrs, attribute.String(fmt.Sprintf("db.query.parameter.%d", i), formatArg(arg)))
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}
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s := h.t.StartSpan(ctx, "db.sql.query", operation, WithOtelTracer(h.tracer))
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s.AddAttributes(attrs...)
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if h.printQueries {
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l := log.Trace()
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for i, arg := range args {
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l = l.Interface(fmt.Sprintf("arg%d", i), arg)
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}
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l.Msg(cleanedQuery)
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}
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return context.WithValue(s.Context(), dbCtxStart{}, time.Now()), nil
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}
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func (h *tracedPgxHooks) After(ctx context.Context, query string, args ...interface{}) (context.Context, error) {
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if s := SpanFromContext(ctx); s != nil {
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s.End()
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}
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if start, ok := ctx.Value(dbCtxStart{}).(time.Time); ok {
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h.mDuration.Record(ctx, float64(time.Since(start).Milliseconds()))
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}
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return ctx, nil
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}
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func (t *Telemetry) RegisterTracedPGx(printQueries bool) {
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sql.Register(TracedPGxDriverName, t.TracedPGx(printQueries))
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log.Debug().Msgf("Registered %s driver", TracedPGxDriverName)
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}
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func (t *Telemetry) TracedPGx(printQueries bool) driver.Driver {
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tracer := t.tracerProvider.Tracer(pgxClientID, trace.WithInstrumentationVersion(libVersion))
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meter := t.meterProvider.Meter(pgxClientID, metric.WithInstrumentationVersion(libVersion))
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mDuration, err := meter.Float64Histogram(
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"db.client.operation.duration",
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metric.WithDescription("Database query response times"),
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metric.WithUnit("ms"),
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metric.WithExplicitBucketBoundaries(0.001, 0.005, 0.01, 0.05, 0.1, 0.5, 1, 5, 10),
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)
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if err != nil {
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log.Fatal().Err(err).Msg("failed to create request duration histogram")
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}
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return sqlhooks.Wrap(&pgx.Driver{}, &tracedPgxHooks{
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printQueries: printQueries,
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t: t,
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tracer: tracer,
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mDuration: mDuration,
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})
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}
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func formatArgs(args []interface{}) []string {
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formattedArgs := make([]string, len(args))
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for i, arg := range args {
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formattedArgs[i] = formatArg(arg)
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}
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return formattedArgs
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}
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func formatArg(arg interface{}) string {
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switch v := arg.(type) {
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case int:
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return fmt.Sprint(v)
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case int64:
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return fmt.Sprint(v)
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case float64:
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return fmt.Sprint(v)
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case string:
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return v
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case []byte:
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return string(v)
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case bool:
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return fmt.Sprint(v)
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case fmt.Stringer:
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return v.String()
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default:
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return fmt.Sprintf("%+v", v)
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}
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}
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