countSpans counts the number of spans in the given trace in deconstructed parquet row format and returns traceId. It simply counts the number of values for span ID, which is always present.
(schema *parquet.Schema, row parquet.Row)
| 385 | // parquet row format and returns traceId. |
| 386 | // It simply counts the number of values for span ID, which is always present. |
| 387 | func countSpans(schema *parquet.Schema, row parquet.Row) (traceID, rootSpanName, rootServiceName string, spans int) { |
| 388 | traceIDColumn, found := schema.Lookup(TraceIDColumnName) |
| 389 | if !found { |
| 390 | return "", "", "", 0 |
| 391 | } |
| 392 | |
| 393 | rootSpanNameColumn, found := schema.Lookup(columnPathRootSpanName) |
| 394 | if !found { |
| 395 | return "", "", "", 0 |
| 396 | } |
| 397 | |
| 398 | rootServiceNameColumn, found := schema.Lookup(columnPathRootServiceName) |
| 399 | if !found { |
| 400 | return "", "", "", 0 |
| 401 | } |
| 402 | |
| 403 | spanID, found := schema.Lookup("rs", "list", "element", "ss", "list", "element", "Spans", "list", "element", "SpanID") |
| 404 | if !found { |
| 405 | return "", "", "", 0 |
| 406 | } |
| 407 | |
| 408 | for _, v := range row { |
| 409 | if v.Column() == spanID.ColumnIndex { |
| 410 | spans++ |
| 411 | } |
| 412 | |
| 413 | if v.Column() == traceIDColumn.ColumnIndex { |
| 414 | traceID = tempoUtil.TraceIDToHexString(v.ByteArray()) |
| 415 | } |
| 416 | |
| 417 | if v.Column() == rootSpanNameColumn.ColumnIndex { |
| 418 | rootSpanName = v.String() |
| 419 | } |
| 420 | |
| 421 | if v.Column() == rootServiceNameColumn.ColumnIndex { |
| 422 | rootServiceName = v.String() |
| 423 | } |
| 424 | } |
| 425 | |
| 426 | return |
| 427 | } |