feat: add http.status_code attribute to all Spans that have at least …

…a low level http response (#986)

Signed-off-by: CI-Bot for Emmanuel Courreges <emmanuel.courreges@orange.com>

google-http-client/src/main/java/com/google/api/client/http/HttpRequest.java

@@ -1012,6 +1012,7 @@ public HttpResponse execute() throws IOException {
         LowLevelHttpResponse lowLevelHttpResponse = lowLevelHttpRequest.execute();
         if (lowLevelHttpResponse != null) {
           OpenCensusUtils.recordReceivedMessageEvent(span, lowLevelHttpResponse.getContentLength());
+          span.putAttribute(HttpTraceAttributeConstants.HTTP_STATUS_CODE, AttributeValue.longAttributeValue(lowLevelHttpResponse.getStatusCode()));
         }
         // Flag used to indicate if an exception is thrown before the response is constructed.
         boolean responseConstructed = false;

google-http-client/src/test/java/com/google/api/client/http/HttpRequestTracingTest.java

@@ -80,6 +80,7 @@ public void executeCreatesSpan() throws IOException {
     assertAttributeEquals(span, "http.host", "google.com");
     assertAttributeEquals(span, "http.url", "https://google.com/");
     assertAttributeEquals(span, "http.method", "GET");
+    assertAttributeEquals(span, "http.status_code", "200");
 
     // Ensure we have a single annotation for starting the first attempt
     assertEquals(1, span.getAnnotations().getEvents().size());