fix(go): make sure metric and logs events are added to the current span (#172)

Author: mhmd-azeez

go/adapter/stdout/adapter.go

@@ -55,12 +55,14 @@ func (s *StdoutAdapter) printEvents(event observe.CallEvent, indentation int) {
 	for _, event := range event.Within() {
 		if call, ok := event.(observe.CallEvent); ok {
 			s.printEvents(call, indentation+1)
-		}
-		if alloc, ok := event.(observe.MemoryGrowEvent); ok {
-			log.Println(strings.Repeat("  ", indentation), "Allocated", alloc.MemoryGrowAmount(), "pages of memory in", name)
-		}
-		if spanTags, ok := event.(observe.SpanTagsEvent); ok {
-			log.Println(strings.Repeat("  ", indentation), "Span tags:", spanTags.Tags)
+		} else if alloc, ok := event.(observe.MemoryGrowEvent); ok {
+			log.Println(strings.Repeat("  ", indentation), " - Allocated", alloc.MemoryGrowAmount(), "pages of memory in", name)
+		} else if spanTags, ok := event.(observe.SpanTagsEvent); ok {
+			log.Println(strings.Repeat("  ", indentation), " - Span tags:", spanTags.Tags)
+		} else if metric, ok := event.(observe.MetricEvent); ok {
+			log.Println(strings.Repeat("  ", indentation), " - Metric:", metric.Message)
+		} else if logEvent, ok := event.(observe.LogEvent); ok {
+			log.Println(strings.Repeat("  ", indentation), " - Log:", logEvent.Message)
 		}
 	}
 }

go/trace_ctx.go

@@ -156,11 +156,11 @@ func (t *TraceCtx) init(ctx context.Context, r wazero.Runtime) error {
 		t.pushFunction(fn)
 	}
 
-	metricFunc := func(ctx context.Context, m api.Module, f uint32, ptr uint32, len uint32) {
+	metricFunc := func(ctx context.Context, m api.Module, f uint32, ptr uint32, l uint32) {
 		format := MetricFormat(f)
-		buffer, ok := m.Memory().Read(ptr, len)
+		buffer, ok := m.Memory().Read(ptr, l)
 		if !ok {
-			log.Printf("metric: failed to read memory at offset %v with length %v\n", ptr, len)
+			log.Printf("metric: failed to read memory at offset %v with length %v\n", ptr, l)
 		}
 
 		event := MetricEvent{
@@ -169,7 +169,13 @@ func (t *TraceCtx) init(ctx context.Context, r wazero.Runtime) error {
 			Message: string(buffer),
 		}
 
-		t.events = append(t.events, event)
+		fn, ok := t.popFunction()
+		if !ok {
+			t.events = append(t.events, event)
+			return
+		}
+		fn.within = append(fn.within, event)
+		t.pushFunction(fn)
 	}
 
 	oldMetricFunc := func(ctx context.Context, m api.Module, f uint32, ptr uint64, len uint32) {
@@ -201,7 +207,6 @@ func (t *TraceCtx) init(ctx context.Context, r wazero.Runtime) error {
 		}
 		fn.within = append(fn.within, event)
 		t.pushFunction(fn)
-
 	}
 
 	oldSpanTagsFunc := func(ctx context.Context, m api.Module, ptr uint64, len uint32) {
@@ -226,7 +231,13 @@ func (t *TraceCtx) init(ctx context.Context, r wazero.Runtime) error {
 			Message: string(buffer),
 		}
 
-		t.events = append(t.events, event)
+		fn, ok := t.popFunction()
+		if !ok {
+			t.events = append(t.events, event)
+			return
+		}
+		fn.within = append(fn.within, event)
+		t.pushFunction(fn)
 	}
 
 	oldLogFunc := func(ctx context.Context, m api.Module, l uint32, ptr uint64, len uint32) {