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tracer.go
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tracer.go
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package tracer
import (
"context"
"net/url"
"github.com/alexfalkowski/go-service/telemetry/tracer"
"github.com/alexfalkowski/migrieren/migrate/migrator"
"go.opentelemetry.io/otel/attribute"
semconv "go.opentelemetry.io/otel/semconv/v1.25.0"
"go.opentelemetry.io/otel/trace"
)
// Migrator for otel.
type Migrator struct {
migrator migrator.Migrator
tracer trace.Tracer
}
// NewMigrator for otel.
func NewMigrator(migrator migrator.Migrator, tracer trace.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) {
u, err := url.Parse(db)
if err != nil {
return nil, err
}
attrs := []attribute.KeyValue{
semconv.DBSystemKey.String(u.Scheme),
semconv.DBUser(u.User.Username()),
attribute.Key("db.migrate.version").Int64(int64(version)),
}
ctx, span := m.tracer.Start(ctx, operationName("db"), trace.WithSpanKind(trace.SpanKindClient), trace.WithAttributes(attrs...))
defer span.End()
ctx = tracer.WithTraceID(ctx, span)
logs, err := m.migrator.Migrate(ctx, source, db, version)
tracer.Error(err, span)
tracer.Meta(ctx, span)
return logs, err
}
// Ping the migrator.
func (m *Migrator) Ping(ctx context.Context, source, db string) error {
return m.migrator.Ping(ctx, source, db)
}
func operationName(name string) string {
return tracer.OperationName("migrate", name)
}