chore: namespace observe c api

go/adapter.go

@@ -100,19 +100,15 @@ func (b *AdapterBase) MakeOtelCallSpans(event CallEvent, parentId []byte, traceI
 			spans = append(spans, b.MakeOtelCallSpans(call, span.SpanId, traceId)...)
 		}
 		if alloc, ok := ev.(MemoryGrowEvent); ok {
-			last := spans[len(spans)-1]
-
 			kv := NewOtelKeyValueInt64("allocation", int64(alloc.MemoryGrowAmount()))
-			i, existing := GetOtelAttrFromSpan("allocation", last)
+			i, existing := GetOtelAttrFromSpan("allocation", span)
 			if existing != nil {
-				last.Attributes[i] = AddOtelKeyValueInt64(kv, existing)
+				span.Attributes[i] = AddOtelKeyValueInt64(kv, existing)
 			} else {
-				last.Attributes = append(last.Attributes, kv)
+				span.Attributes = append(span.Attributes, kv)
 			}
 		}
 		if tags, ok := ev.(SpanTagsEvent); ok {
-			last := spans[len(spans)-1]
-
 			for _, tag := range tags.Tags {
 				parts := strings.Split(tag, ":")
 				if len(parts) != 2 {
@@ -121,7 +117,7 @@ func (b *AdapterBase) MakeOtelCallSpans(event CallEvent, parentId []byte, traceI
 				}
 
 				kv := NewOtelKeyValueString(parts[0], parts[1])
-				last.Attributes = append(last.Attributes, kv)
+				span.Attributes = append(span.Attributes, kv)
 			}
 		}
 	}

observe-api/c/observe_api.c

@@ -4,21 +4,21 @@
 #include <stdlib.h>
 #include <string.h>
 
-void span_enter(const char *name) {
+void observe_api_span_enter(const char *name) {
   const uint32_t uint32_ptr = (uint32_t)name;
   const uint32_t uint32_length = strlen(name);
   _span_enter(uint32_ptr, uint32_length);
 }
 
-void span_exit(void) { _span_exit(); }
+void observe_api_span_exit(void) { _span_exit(); }
 
-void metric(const char *metric) {
+void observe_api_metric(const char *metric) {
   const uint32_t uint32_ptr = (uint32_t)metric;
   const uint32_t uint32_length = strlen(metric);
   _metric(1, uint32_ptr, uint32_length);
 }
 
-void write_log(const enum DO_LOG_LEVEL level, const char *msg) {
+void observe_api_write_log(const enum DO_LOG_LEVEL level, const char *msg) {
   const uint32_t uint32_ptr = (uint32_t)msg;
   const uint32_t uint32_length = strlen(msg);
   const uint32_t uint32_level = level;

observe-api/c/observe_api.h

@@ -22,9 +22,17 @@ enum DO_LOG_LEVEL {
   DO_LL_TRACE = 4
 };
 
-void span_enter(const char *name);
-void span_exit(void);
-void metric(const char *metric);
-void write_log(const enum DO_LOG_LEVEL level, const char *msg);
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void observe_api_span_enter(const char *name);
+void observe_api_span_exit(void);
+void observe_api_metric(const char *metric);
+void observe_api_write_log(const enum DO_LOG_LEVEL level, const char *msg);
+
+#ifdef __cplusplus
+}
+#endif
 
 #endif

observe-api/test/c/main.c

@@ -3,15 +3,15 @@
 #include <stdlib.h>
 
 void run() {
-  span_enter("printf");
+  observe_api_span_enter("printf");
   printf("Hello from Wasm!\n");
-  span_exit();
+  observe_api_span_exit();
 }
 
 int main(int argc, char *argv[]) {
-  span_enter("run");
+  observe_api_span_enter("run");
   run();
-  span_exit();
+  observe_api_span_exit();
 
   return 0;
 }