ctl: add debug log with control data items

src/knot/ctl/commands.c

@@ -19,12 +19,34 @@
 #include "knot/common/log.h"
 #include "knot/conf/confio.h"
 #include "knot/ctl/commands.h"
-#include "knot/ctl/process.h"
 #include "libknot/libknot.h"
 #include "libknot/yparser/yptrafo.h"
 #include "contrib/macros.h"
 #include "contrib/string.h"
 
+void ctl_log_data(knot_ctl_data_t *data)
+{
+	if (data == NULL) {
+		return;
+	}
+
+	const char *zone = (*data)[KNOT_CTL_IDX_ZONE];
+	const char *section = (*data)[KNOT_CTL_IDX_SECTION];
+	const char *item = (*data)[KNOT_CTL_IDX_ITEM];
+	const char *id = (*data)[KNOT_CTL_IDX_ID];
+
+	if (zone != NULL) {
+		log_debug("control, zone '%s'", zone);
+	} else if (section != NULL) {
+		log_debug("control, item '%s%s%s%s%s%s'", section,
+		          (id   != NULL ? "["  : ""),
+		          (id   != NULL ? id   : ""),
+		          (id   != NULL ? "]"  : ""),
+		          (item != NULL ? "."  : ""),
+		          (item != NULL ? item : ""));
+	}
+}
+
 static void send_error(ctl_args_t *args, const char *msg)
 {
 	knot_ctl_data_t data;
@@ -94,6 +116,7 @@ static int zones_apply(ctl_args_t *args, int (*fcn)(zone_t *, ctl_args_t *))
 		if (ret != KNOT_EOK || args->type != KNOT_CTL_TYPE_DATA) {
 			break;
 		}
+		ctl_log_data(&args->data);
 	}
 
 	rcu_read_unlock();
@@ -502,6 +525,7 @@ static int ctl_conf_read(ctl_args_t *args, ctl_cmd_t cmd)
 		if (ret != KNOT_EOK || args->type != KNOT_CTL_TYPE_DATA) {
 			break;
 		}
+		ctl_log_data(&args->data);
 	}
 
 	return ret;
@@ -548,6 +572,7 @@ static int ctl_conf_modify(ctl_args_t *args, ctl_cmd_t cmd)
 		if (ret != KNOT_EOK || args->type != KNOT_CTL_TYPE_DATA) {
 			break;
 		}
+		ctl_log_data(&args->data);
 	}
 
 	// Finish child transaction.

src/knot/ctl/commands.h

@@ -89,4 +89,11 @@ ctl_cmd_t ctl_str_to_cmd(const char *cmd_str);
  */
 int ctl_exec(ctl_cmd_t cmd, ctl_args_t *args);
 
+/*!
+ * Logs control data items at the debug level.
+ *
+ * \param[in] data  Control data.
+ */
+void ctl_log_data(knot_ctl_data_t *data);
+
 /*! @} */

src/knot/ctl/process.c

@@ -71,6 +71,7 @@ int ctl_process(knot_ctl_t *ctl, server_t *server)
 		ctl_cmd_t cmd = ctl_str_to_cmd(cmd_name);
 		if (cmd != CTL_NONE) {
 			log_info("control, received command '%s'", cmd_name);
+			ctl_log_data(&args.data);
 		} else if (cmd_name != NULL){
 			log_debug("control, invalid command '%s'", cmd_name);
 			continue;