MI: implement all objects related to trigger machine interface

[lttng-tools.git] / src / common / event-rule / kernel-tracepoint.c

diff --git a/src/common/event-rule/kernel-tracepoint.c b/src/common/event-rule/kernel-tracepoint.c
index 11b34045fa19656866a34fb59d3c4ad757837ea0..0c62308f5045fc95f5c409461603c4a09d471721 100644 (file)
--- a/src/common/event-rule/kernel-tracepoint.c
+++ b/src/common/event-rule/kernel-tracepoint.c
@@ -8,13 +8,14 @@
 #include <assert.h>
 #include <common/credentials.h>
 #include <common/error.h>
+#include <common/hashtable/hashtable.h>
+#include <common/hashtable/utils.h>
 #include <common/macros.h>
+#include <common/mi-lttng.h>
 #include <common/optional.h>
-#include <common/payload.h>
 #include <common/payload-view.h>
+#include <common/payload.h>
 #include <common/runas.h>
-#include <common/hashtable/hashtable.h>
-#include <common/hashtable/utils.h>
 #include <common/string-utils/string-utils.h>
 #include <lttng/event-rule/event-rule-internal.h>
 #include <lttng/event-rule/kernel-tracepoint-internal.h>
@@ -266,6 +267,67 @@ static unsigned long lttng_event_rule_kernel_tracepoint_hash(
        return hash;
 }
 
+static enum lttng_error_code lttng_event_rule_kernel_tracepoint_mi_serialize(
+               const struct lttng_event_rule *rule, struct mi_writer *writer)
+{
+       int ret;
+       enum lttng_error_code ret_code;
+       enum lttng_event_rule_status status;
+       const char *filter = NULL;
+       const char *name_pattern = NULL;
+
+       assert(rule);
+       assert(writer);
+       assert(IS_KERNEL_TRACEPOINT_EVENT_RULE(rule));
+
+       status = lttng_event_rule_kernel_tracepoint_get_name_pattern(
+                       rule, &name_pattern);
+       assert(status == LTTNG_EVENT_RULE_STATUS_OK);
+       assert(name_pattern);
+
+       status = lttng_event_rule_kernel_tracepoint_get_filter(rule, &filter);
+       assert(status == LTTNG_EVENT_RULE_STATUS_OK ||
+                       status == LTTNG_EVENT_RULE_STATUS_UNSET);
+
+       /* Open event rule kernel tracepoint element. */
+       ret = mi_lttng_writer_open_element(
+                       writer, mi_lttng_element_event_rule_kernel_tracepoint);
+       if (ret) {
+               goto mi_error;
+       }
+
+       /* Name pattern. */
+       ret = mi_lttng_writer_write_element_string(writer,
+                       mi_lttng_element_event_rule_name_pattern, name_pattern);
+       if (ret) {
+               goto mi_error;
+       }
+
+       /* Filter. */
+       if (filter != NULL) {
+               ret = mi_lttng_writer_write_element_string(writer,
+                               mi_lttng_element_event_rule_filter_expression,
+                               filter);
+               if (ret) {
+                       goto mi_error;
+               }
+       }
+
+       /* Close event rule kernel tracepoint element. */
+       ret = mi_lttng_writer_close_element(writer);
+       if (ret) {
+               goto mi_error;
+       }
+
+       ret_code = LTTNG_OK;
+       goto end;
+
+mi_error:
+       ret_code = LTTNG_ERR_MI_IO_FAIL;
+end:
+       return ret_code;
+}
+
 struct lttng_event_rule *lttng_event_rule_kernel_tracepoint_create(void)
 {
        struct lttng_event_rule *rule = NULL;
@@ -292,6 +354,7 @@ struct lttng_event_rule *lttng_event_rule_kernel_tracepoint_create(void)
        tp_rule->parent.generate_exclusions =
                        lttng_event_rule_kernel_tracepoint_generate_exclusions;
        tp_rule->parent.hash = lttng_event_rule_kernel_tracepoint_hash;
+       tp_rule->parent.mi_serialize = lttng_event_rule_kernel_tracepoint_mi_serialize;
 
        /* Not necessary for now. */
        tp_rule->parent.generate_lttng_event = NULL;