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otel.go
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otel.go
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package otel
import (
"context"
"github.com/alexfalkowski/go-service/otel"
"github.com/alexfalkowski/go-service/version"
"github.com/alexfalkowski/migrieren/migrate/migrator"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/codes"
semconv "go.opentelemetry.io/otel/semconv/v1.18.0"
"go.opentelemetry.io/otel/trace"
"go.uber.org/fx"
)
// Tracer for otel.
type Tracer trace.Tracer
// NewTracer for otel.
func NewTracer(lc fx.Lifecycle, cfg *otel.Config, version version.Version) (Tracer, error) {
return otel.NewTracer(otel.TracerParams{Lifecycle: lc, Name: "migrator", Config: cfg, Version: version})
}
// Migrator for otel.
type Migrator struct {
migrator migrator.Migrator
tracer Tracer
}
// NewMigrator for otel.
func NewMigrator(migrator migrator.Migrator, tracer Tracer) *Migrator {
return &Migrator{migrator: migrator, tracer: tracer}
}
// Migrate a database to a version and returning the database logs.
func (m *Migrator) Migrate(ctx context.Context, source, db string, version uint64) ([]string, error) {
operationName := "migrate"
attrs := []attribute.KeyValue{
semconv.DBSystemRedis,
attribute.Key("db.migrate.version").Int64(int64(version)),
}
ctx, span := m.tracer.Start(
ctx,
operationName,
trace.WithSpanKind(trace.SpanKindClient),
trace.WithAttributes(attrs...),
)
defer span.End()
logs, err := m.migrator.Migrate(ctx, source, db, version)
if err != nil {
span.SetStatus(codes.Error, err.Error())
span.RecordError(err)
return nil, err
}
return logs, nil
}
// Ping the migrator.
func (m *Migrator) Ping(ctx context.Context, source, db string) error {
return m.migrator.Ping(ctx, source, db)
}