actions: introduce start session action

[lttng-tools.git] / src / common / actions / action.c

diff --git a/src/common/actions/action.c b/src/common/actions/action.c
index 6894036cb779d09ced9c5acee4dacf9a2e99d876..bd11301cc8ba1ae0f1062b120247f7aa043958bd 100644 (file)
--- a/src/common/actions/action.c
+++ b/src/common/actions/action.c
@@ -5,10 +5,25 @@
  *
  */
 
+#include <assert.h>
+#include <common/error.h>
 #include <lttng/action/action-internal.h>
 #include <lttng/action/notify-internal.h>
-#include <common/error.h>
-#include <assert.h>
+#include <lttng/action/start-session-internal.h>
+
+static const char *lttng_action_type_string(enum lttng_action_type action_type)
+{
+       switch (action_type) {
+       case LTTNG_ACTION_TYPE_UNKNOWN:
+               return "UNKNOWN";
+       case LTTNG_ACTION_TYPE_NOTIFY:
+               return "NOTIFY";
+       case LTTNG_ACTION_TYPE_START_SESSION:
+               return "START_SESSION";
+       default:
+               return "???";
+       }
+}
 
 enum lttng_action_type lttng_action_get_type(struct lttng_action *action)
 {
@@ -28,11 +43,13 @@ void lttng_action_init(
                enum lttng_action_type type,
                action_validate_cb validate,
                action_serialize_cb serialize,
+               action_equal_cb equal,
                action_destroy_cb destroy)
 {
        action->type = type;
        action->validate = validate;
        action->serialize = serialize;
+       action->equal = equal;
        action->destroy = destroy;
 }
 
@@ -106,12 +123,22 @@ ssize_t lttng_action_create_from_buffer(const struct lttng_buffer_view *view,
 
        action_comm = (const struct lttng_action_comm *) view->data;
 
-       DBG("Deserializing action from buffer");
+       DBG("Create action from buffer: action-type=%s",
+                       lttng_action_type_string(action_comm->action_type));
+
        switch (action_comm->action_type) {
        case LTTNG_ACTION_TYPE_NOTIFY:
                create_from_buffer_cb = lttng_action_notify_create_from_buffer;
                break;
+       case LTTNG_ACTION_TYPE_START_SESSION:
+               create_from_buffer_cb =
+                               lttng_action_start_session_create_from_buffer;
+               break;
        default:
+               ERR("Failed to create action from buffer, unhandled action type: action-type=%u (%s)",
+                               action_comm->action_type,
+                               lttng_action_type_string(
+                                               action_comm->action_type));
                consumed_len = -1;
                goto end;
        }
@@ -137,3 +164,28 @@ ssize_t lttng_action_create_from_buffer(const struct lttng_buffer_view *view,
 end:
        return consumed_len;
 }
+
+LTTNG_HIDDEN
+bool lttng_action_is_equal(const struct lttng_action *a,
+               const struct lttng_action *b)
+{
+       bool is_equal = false;
+
+       if (!a || !b) {
+               goto end;
+       }
+
+       if (a->type != b->type) {
+               goto end;
+       }
+
+       if (a == b) {
+               is_equal = true;
+               goto end;
+       }
+
+       assert(a->equal);
+       is_equal = a->equal(a, b);
+end:
+       return is_equal;
+}