ConsumeWithFinal consumes the trace, but allows for performance savings when it is known that this is the last expected input trace.
(tr *Trace, final bool)
| 44 | // ConsumeWithFinal consumes the trace, but allows for performance savings when |
| 45 | // it is known that this is the last expected input trace. |
| 46 | func (c *Combiner) ConsumeWithFinal(tr *Trace, final bool) (spanCount int) { |
| 47 | if tr == nil { |
| 48 | return |
| 49 | } |
| 50 | |
| 51 | // First call? |
| 52 | if c.result == nil { |
| 53 | c.result = tr |
| 54 | |
| 55 | // Pre-alloc map with input size. This saves having to grow the |
| 56 | // map from the small starting size. |
| 57 | n := 0 |
| 58 | for _, b := range c.result.ResourceSpans { |
| 59 | for _, ils := range b.ScopeSpans { |
| 60 | n += len(ils.Spans) |
| 61 | } |
| 62 | } |
| 63 | c.spans = make(map[uint64]struct{}, n) |
| 64 | |
| 65 | for _, b := range c.result.ResourceSpans { |
| 66 | for _, ils := range b.ScopeSpans { |
| 67 | for _, s := range ils.Spans { |
| 68 | c.spans[util.SpanIDAndKindToToken(s.SpanID, s.Kind)] = struct{}{} |
| 69 | } |
| 70 | } |
| 71 | } |
| 72 | return |
| 73 | } |
| 74 | |
| 75 | // coalesce root level information |
| 76 | if tr.EndTimeUnixNano > c.result.EndTimeUnixNano { |
| 77 | c.result.EndTimeUnixNano = tr.EndTimeUnixNano |
| 78 | } |
| 79 | if tr.StartTimeUnixNano < c.result.StartTimeUnixNano || c.result.StartTimeUnixNano == 0 { |
| 80 | c.result.StartTimeUnixNano = tr.StartTimeUnixNano |
| 81 | } |
| 82 | if c.result.RootServiceName == "" { |
| 83 | c.result.RootServiceName = tr.RootServiceName |
| 84 | } |
| 85 | if c.result.RootSpanName == "" { |
| 86 | c.result.RootSpanName = tr.RootSpanName |
| 87 | } |
| 88 | c.result.DurationNano = c.result.EndTimeUnixNano - c.result.StartTimeUnixNano |
| 89 | |
| 90 | // loop through every span and copy spans in B that don't exist to A |
| 91 | for _, b := range tr.ResourceSpans { |
| 92 | notFoundILS := b.ScopeSpans[:0] |
| 93 | |
| 94 | for _, ils := range b.ScopeSpans { |
| 95 | notFoundSpans := ils.Spans[:0] |
| 96 | for _, s := range ils.Spans { |
| 97 | // if not already encountered, then keep |
| 98 | token := util.SpanIDAndKindToToken(s.SpanID, s.Kind) |
| 99 | _, ok := c.spans[token] |
| 100 | if !ok { |
| 101 | notFoundSpans = append(notFoundSpans, s) |
| 102 | |
| 103 | // If last expected input, then we don't need to record |