Ignore result if host/service unreachable"

src/main.cpp

@@ -18,10 +18,12 @@ namespace
 {
 constexpr const char* HOST_INFO_URL =
   "https://bigsister.fem.tu-ilmenau.de:5665/v1/objects/"
-  "hosts?attrs=acknowledgement&attrs=last_check_result&attrs=downtime_depth&attrs=vars&attrs=state_type";
+  "hosts?attrs=acknowledgement&attrs=last_check_result&attrs=downtime_depth&attrs=vars&attrs=state_"
+  "type&attrs=last_reachable";
 constexpr const char* SERVICE_INFO_URL =
   "https://bigsister.fem.tu-ilmenau.de:5665/v1/objects/"
-  "services?attrs=acknowledgement&attrs=last_check_result&attrs=downtime_depth&attrs=vars&attrs=state_type";
+  "services?attrs=acknowledgement&attrs=last_check_result&attrs=downtime_depth&attrs=vars&attrs="
+  "state_type&attrs=last_reachable";
 constexpr bool SKIP_CERT_VERIFICATION = true;
 
 constexpr int RETURN_OK = 0;
@@ -36,7 +38,6 @@ std::ostringstream output_buf;
 using json = nlohmann::json;
 using health_data_t = std::tuple<unsigned long, unsigned long>;
 using health_data_map_t = std::unordered_map<std::string, health_data_t>;
-} // namespace
 
 void print_plugin_output(int return_code, std::string status_message)
 {
@@ -56,13 +57,14 @@ void print_plugin_output(int return_code, std::string status_message)
 	}
 }
 
-void print_health(int return_code, float health, float threshold_warning, float threshold_critical, const std::string& group_name)
+void print_health(int return_code, float health, float threshold_warning, float threshold_critical,
+                  const std::string& group_name)
 {
 	std::string health_as_str = std::to_string(health);
-	print_plugin_output(return_code, "Health " + health_as_str + " (group "
-			+ group_name + ") | health=" + health_as_str + "%;" +
-			std::to_string(threshold_warning) + ":;" +
-			std::to_string(threshold_critical) + ":;0;100");
+	print_plugin_output(return_code, "Health " + health_as_str + " (group " + group_name
+	                                   + ") | health=" + health_as_str + "%;"
+	                                   + std::to_string(threshold_warning) + ":;"
+	                                   + std::to_string(threshold_critical) + ":;0;100");
 }
 
 #ifndef NDEBUG
@@ -96,6 +98,11 @@ inline bool is_in_soft_state(json object)
 	return object["attrs"]["state_type"] == 0;
 }
 
+inline bool is_unreachable(json object)
+{
+	return !(object["attrs"]["last_reachable"].get<bool>());
+}
+
 void parse_result(health_data_map_t& output, const std::string& raw_data)
 {
 	json data = json::parse(raw_data);
@@ -103,7 +110,7 @@ void parse_result(health_data_map_t& output, const std::string& raw_data)
 
 	for (auto& object : results) {
 		if (is_in_soft_state(object) || is_acknowledged(object) || is_in_downtime(object)
-		    || ignored_by_config(object)) {
+		    || ignored_by_config(object) || is_unreachable(object)) {
 			continue;
 		}
 
@@ -148,6 +155,8 @@ size_t write_memory_cb(void* content, size_t size, size_t n_memb, void* userdata
 	return real_size;
 }
 
+} // namespace
+
 int main(int argc, char** argv)
 {
 	if (argc < 4) {