[golang] Use /healthcheck to get library version #2799

utils/_context/_scenarios/parametric.py

@@ -149,7 +149,7 @@ def configure(self, config):
             self._clean_networks()
 
         # https://github.com/DataDog/system-tests/issues/2799
-        if library in ("nodejs", "python"):
+        if library in ("nodejs", "python", "golang"):
             output = _get_client().containers.run(
                 self.apm_test_server_definition.container_tag,
                 remove=True,
@@ -422,6 +422,7 @@ def golang_library_factory():
 COPY {golang_reldir}/. /app
 # download the proper tracer version
 COPY utils/build/docker/golang/install_ddtrace.sh binaries* /binaries/
+COPY utils/build/docker/golang/parametric/system_tests_library_version.sh system_tests_library_version.sh
 RUN /binaries/install_ddtrace.sh
 
 RUN go install

utils/_context/containers.py

@@ -681,7 +681,7 @@ def configure(self, replay):
         )
 
         # https://github.com/DataDog/system-tests/issues/2799
-        if self.library in ("nodejs", "python"):
+        if self.library in ("nodejs", "python", "golang"):
             self.healthcheck = {
                 "test": f"curl --fail --silent --show-error --max-time 2 localhost:{self.port}/healthcheck",
                 "retries": 60,
@@ -715,13 +715,14 @@ def post_start(self):
 
         # new way of getting info from the weblog. Only working for nodejs and python right now
         # https://github.com/DataDog/system-tests/issues/2799
-        if self.library in ("nodejs", "python"):
+        if self.library in ("nodejs", "python", "golang"):
             with open(self.healthcheck_log_file, mode="r", encoding="utf-8") as f:
                 data = json.load(f)
                 lib = data["library"]
 
             self._library = LibraryVersion(lib["language"], lib["version"])
-            self.libddwaf_version = LibraryVersion("libddwaf", lib["libddwaf_version"]).version
+            if "libddwaf_version" in lib:
+                self.libddwaf_version = LibraryVersion("libddwaf", lib["libddwaf_version"]).version
 
             if self.appsec_rules_version == "0.0.0" and "appsec_event_rules_version" in lib:
                 self.appsec_rules_version = LibraryVersion("appsec_rules", lib["appsec_event_rules_version"]).version

utils/build/docker/golang/app/net-http/main.go

@@ -49,6 +49,40 @@ func main() {
 		w.WriteHeader(http.StatusOK)
 	})
 
+	mux.HandleFunc("/healthcheck", func(w http.ResponseWriter, r *http.Request) {
+		tracerVersion, err := os.ReadFile("SYSTEM_TESTS_LIBRARY_VERSION")
+        if err != nil {
+            http.Error(w, "Can't get SYSTEM_TESTS_LIBRARY_VERSION", http.StatusInternalServerError)
+            return
+        }
+
+		appsec_rules_version, err := os.ReadFile("SYSTEM_TESTS_APPSEC_EVENT_RULES_VERSION")
+        if err != nil {
+            http.Error(w, "Can't get SYSTEM_TESTS_APPSEC_EVENT_RULES_VERSION", http.StatusInternalServerError)
+            return
+        }
+
+        libray := map[string]interface{}{
+            "language":  "golang",
+            "version":   string(tracerVersion),
+            "appsec_event_rules_version": string(appsec_rules_version),
+        }
+
+        data := map[string]interface{}{
+            "status": "ok",
+            "library": libray,
+        }
+
+        jsonData, err := json.Marshal(data)
+        if err != nil {
+            http.Error(w, "Can;t build JSON data", http.StatusInternalServerError)
+            return
+        }
+
+        w.Header().Set("Content-Type", "application/json")
+        w.Write(jsonData)
+	})
+
 	mux.HandleFunc("/waf", func(w http.ResponseWriter, r *http.Request) {
 		body, err := common.ParseBody(r)
 		if err == nil {

utils/build/docker/golang/parametric/system_tests_library_version.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+cat SYSTEM_TESTS_LIBRARY_VERSION