MI: {add, list, remove} trigger

[lttng-tools.git] / src / bin / lttng / commands / add_trigger.c

diff --git a/src/bin/lttng/commands/add_trigger.c b/src/bin/lttng/commands/add_trigger.c
index 73bb0167c47949e1f2db5ee6bae826336915310a..e7809dc521362408cc2df6b3ed58dddc5f55d2a8 100644 (file)
--- a/src/bin/lttng/commands/add_trigger.c
+++ b/src/bin/lttng/commands/add_trigger.c
@@ -15,6 +15,7 @@
 
 #include "common/argpar/argpar.h"
 #include "common/dynamic-array.h"
+#include "common/mi-lttng.h"
 #include "common/string-utils/string-utils.h"
 #include "common/utils.h"
 /* For lttng_event_rule_type_str(). */
@@ -2186,9 +2187,35 @@ int cmd_add_trigger(int argc, const char **argv)
        int i;
        char *owner_uid = NULL;
        enum lttng_error_code ret_code;
+       struct mi_writer *mi_writer = NULL;
 
        lttng_dynamic_pointer_array_init(&actions, lttng_actions_destructor);
 
+       if (lttng_opt_mi) {
+               mi_writer = mi_lttng_writer_create(
+                               fileno(stdout), lttng_opt_mi);
+               if (!mi_writer) {
+                       ret = CMD_ERROR;
+                       goto error;
+               }
+
+               /* Open command element. */
+               ret = mi_lttng_writer_command_open(mi_writer,
+                               mi_lttng_element_command_add_trigger);
+               if (ret) {
+                       ret = CMD_ERROR;
+                       goto error;
+               }
+
+               /* Open output element. */
+               ret = mi_lttng_writer_open_element(
+                               mi_writer, mi_lttng_element_command_output);
+               if (ret) {
+                       ret = CMD_ERROR;
+                       goto error;
+               }
+       }
+
        while (true) {
                enum argpar_state_parse_next_status status;
                const struct argpar_item_opt *item_opt;
@@ -2374,6 +2401,13 @@ int cmd_add_trigger(int argc, const char **argv)
                goto error;
        }
 
+       if (lttng_opt_mi) {
+               ret_code = lttng_trigger_mi_serialize(trigger, mi_writer, NULL);
+               if (ret_code != LTTNG_OK) {
+                       goto error;
+               }
+       }
+
        MSG("Trigger registered successfully.");
        ret = 0;
 
@@ -2383,6 +2417,33 @@ error:
        ret = 1;
 
 end:
+       /* Mi closing. */
+       if (lttng_opt_mi) {
+               int mi_ret;
+
+               /* Close output element. */
+               mi_ret = mi_lttng_writer_close_element(mi_writer);
+               if (mi_ret) {
+                       ret = 1;
+                       goto cleanup;
+               }
+
+               mi_ret = mi_lttng_writer_write_element_bool(mi_writer,
+                               mi_lttng_element_command_success, ret ? 0 : 1);
+               if (mi_ret) {
+                       ret = 1;
+                       goto cleanup;
+               }
+
+               /* Command element close. */
+               mi_ret = mi_lttng_writer_command_close(mi_writer);
+               if (mi_ret) {
+                       ret = 1;
+                       goto cleanup;
+               }
+       }
+
+cleanup:
        argpar_state_destroy(argpar_state);
        argpar_item_destroy(argpar_item);
        lttng_dynamic_pointer_array_reset(&actions);
@@ -2393,5 +2454,10 @@ end:
        free(error);
        free(name);
        free(owner_uid);
+       if (mi_writer && mi_lttng_writer_destroy(mi_writer)) {
+               /* Preserve original error code. */
+               ret = ret ? ret : CMD_ERROR;
+       }
+
        return ret;
 }