lib: rename include dir to babeltrace2
[babeltrace.git] / lib / plugin / plugin-so.c
index 9208dc535bb967b60661c000d868e2b5648f6799..ec69646f99fd38f3bb4c4bc20472698aa0aebe18 100644 (file)
@@ -1,6 +1,6 @@
 /*
+ * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
  * Copyright 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
- * Copyright 2017 Philippe Proulx <pproulx@efficios.com>
  *
  * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
  *
  */
 
 #define BT_LOG_TAG "PLUGIN-SO"
-#include <babeltrace/lib-logging-internal.h>
-
-#include <babeltrace/compiler-internal.h>
-#include <babeltrace/object.h>
-#include <babeltrace/plugin/plugin-internal.h>
-#include <babeltrace/plugin/plugin-so-internal.h>
-#include <babeltrace/plugin/plugin-dev.h>
-#include <babeltrace/plugin/plugin-internal.h>
-#include <babeltrace/graph/component-class-internal.h>
-#include <babeltrace/graph/private-component-class.h>
-#include <babeltrace/graph/private-component-class-source.h>
-#include <babeltrace/graph/private-component-class-filter.h>
-#include <babeltrace/graph/private-component-class-sink.h>
-#include <babeltrace/types.h>
-#include <babeltrace/list-internal.h>
-#include <babeltrace/assert-internal.h>
+#include <babeltrace2/lib-logging-internal.h>
+
+#include <babeltrace2/assert-internal.h>
+#include <babeltrace2/assert-pre-internal.h>
+#include <babeltrace2/compiler-internal.h>
+#include <babeltrace2/plugin/plugin-internal.h>
+#include <babeltrace2/plugin/plugin-so-internal.h>
+#include <babeltrace2/plugin/plugin-dev.h>
+#include <babeltrace2/plugin/plugin-internal.h>
+#include <babeltrace2/graph/component-class-internal.h>
+#include <babeltrace2/graph/component-class.h>
+#include <babeltrace2/graph/component-class-source.h>
+#include <babeltrace2/graph/component-class-filter.h>
+#include <babeltrace2/graph/component-class-sink.h>
+#include <babeltrace2/types.h>
+#include <babeltrace2/list-internal.h>
 #include <string.h>
 #include <stdlib.h>
 #include <glib.h>
@@ -71,7 +71,7 @@ BT_PLUGIN_MODULE();
  *
  * It allows this use-case:
  *
- *        my_plugins = bt_plugin_create_all_from_file("/path/to/my-plugin.so");
+ *        my_plugins = bt_plugin_find_all_from_file("/path/to/my-plugin.so");
  *        // instantiate components from a plugin's component classes
  *        // put plugins and free my_plugins here
  *        // user code of instantiated components still exists
@@ -102,6 +102,21 @@ void fini_comp_class_list(void)
        BT_LOGD_STR("Released references from all component classes to shared library handles.");
 }
 
+static inline
+const char *bt_self_plugin_status_string(enum bt_self_plugin_status status)
+{
+       switch (status) {
+       case BT_SELF_PLUGIN_STATUS_OK:
+               return "BT_SELF_PLUGIN_STATUS_OK";
+       case BT_SELF_PLUGIN_STATUS_ERROR:
+               return "BT_SELF_PLUGIN_STATUS_ERROR";
+       case BT_SELF_PLUGIN_STATUS_NOMEM:
+               return "BT_SELF_PLUGIN_STATUS_NOMEM";
+       default:
+               return "(unknown)";
+       }
+}
+
 static
 void bt_plugin_so_shared_lib_handle_destroy(struct bt_object *obj)
 {
@@ -117,17 +132,9 @@ void bt_plugin_so_shared_lib_handle_destroy(struct bt_object *obj)
                shared_lib_handle, path);
 
        if (shared_lib_handle->init_called && shared_lib_handle->exit) {
-               enum bt_plugin_status status;
-
                BT_LOGD_STR("Calling user's plugin exit function.");
-               status = shared_lib_handle->exit();
-               BT_LOGD("User function returned: %s",
-                       bt_plugin_status_string(status));
-
-               if (status < 0) {
-                       BT_LOGW("User's plugin exit function failed: "
-                               "path=\"%s\"", path);
-               }
+               shared_lib_handle->exit();
+               BT_LOGD_STR("User function returned.");
        }
 
        if (shared_lib_handle->module) {
@@ -198,7 +205,7 @@ struct bt_plugin_so_shared_lib_handle *bt_plugin_so_shared_lib_handle_create(
                 * DEBUG-level logging because we're only _trying_ to
                 * open this file as a Babeltrace plugin: if it's not,
                 * it's not an error. And because this can be tried
-                * during bt_plugin_create_all_from_dir(), it's not even
+                * during bt_plugin_find_all_from_dir(), it's not even
                 * a warning.
                 */
                BT_LOGD("Cannot open GModule: %s: path=\"%s\"",
@@ -285,37 +292,42 @@ enum bt_plugin_status bt_plugin_so_init(
 
                union {
                        struct {
-                               bt_private_component_class_source_init_method init;
-                               bt_private_component_class_source_finalize_method finalize;
-                               bt_private_component_class_source_query_method query;
-                               bt_private_component_class_source_accept_output_port_connection_method accept_output_port_connection;
-                               bt_private_component_class_source_output_port_connected_method output_port_connected;
-                               bt_private_component_class_source_output_port_disconnected_method output_port_disconnected;
-                               bt_private_component_class_source_notification_iterator_init_method notif_iter_init;
-                               bt_private_component_class_source_notification_iterator_finalize_method notif_iter_finalize;
+                               bt_component_class_source_init_method init;
+                               bt_component_class_source_finalize_method finalize;
+                               bt_component_class_source_query_method query;
+                               bt_component_class_source_accept_output_port_connection_method accept_output_port_connection;
+                               bt_component_class_source_output_port_connected_method output_port_connected;
+                               bt_component_class_source_message_iterator_init_method msg_iter_init;
+                               bt_component_class_source_message_iterator_finalize_method msg_iter_finalize;
+                               bt_component_class_source_message_iterator_seek_ns_from_origin_method msg_iter_seek_ns_from_origin;
+                               bt_component_class_source_message_iterator_seek_beginning_method msg_iter_seek_beginning;
+                               bt_component_class_source_message_iterator_can_seek_ns_from_origin_method msg_iter_can_seek_ns_from_origin;
+                               bt_component_class_source_message_iterator_can_seek_beginning_method msg_iter_can_seek_beginning;
                        } source;
 
                        struct {
-                               bt_private_component_class_filter_init_method init;
-                               bt_private_component_class_filter_finalize_method finalize;
-                               bt_private_component_class_filter_query_method query;
-                               bt_private_component_class_filter_accept_input_port_connection_method accept_input_port_connection;
-                               bt_private_component_class_filter_accept_output_port_connection_method accept_output_port_connection;
-                               bt_private_component_class_filter_input_port_connected_method input_port_connected;
-                               bt_private_component_class_filter_output_port_connected_method output_port_connected;
-                               bt_private_component_class_filter_input_port_disconnected_method input_port_disconnected;
-                               bt_private_component_class_filter_output_port_disconnected_method output_port_disconnected;
-                               bt_private_component_class_filter_notification_iterator_init_method notif_iter_init;
-                               bt_private_component_class_filter_notification_iterator_finalize_method notif_iter_finalize;
+                               bt_component_class_filter_init_method init;
+                               bt_component_class_filter_finalize_method finalize;
+                               bt_component_class_filter_query_method query;
+                               bt_component_class_filter_accept_input_port_connection_method accept_input_port_connection;
+                               bt_component_class_filter_accept_output_port_connection_method accept_output_port_connection;
+                               bt_component_class_filter_input_port_connected_method input_port_connected;
+                               bt_component_class_filter_output_port_connected_method output_port_connected;
+                               bt_component_class_filter_message_iterator_init_method msg_iter_init;
+                               bt_component_class_filter_message_iterator_finalize_method msg_iter_finalize;
+                               bt_component_class_filter_message_iterator_seek_ns_from_origin_method msg_iter_seek_ns_from_origin;
+                               bt_component_class_filter_message_iterator_seek_beginning_method msg_iter_seek_beginning;
+                               bt_component_class_filter_message_iterator_can_seek_ns_from_origin_method msg_iter_can_seek_ns_from_origin;
+                               bt_component_class_filter_message_iterator_can_seek_beginning_method msg_iter_can_seek_beginning;
                        } filter;
 
                        struct {
-                               bt_private_component_class_sink_init_method init;
-                               bt_private_component_class_sink_finalize_method finalize;
-                               bt_private_component_class_sink_query_method query;
-                               bt_private_component_class_sink_accept_input_port_connection_method accept_input_port_connection;
-                               bt_private_component_class_sink_input_port_connected_method input_port_connected;
-                               bt_private_component_class_sink_input_port_disconnected_method input_port_disconnected;
+                               bt_component_class_sink_init_method init;
+                               bt_component_class_sink_finalize_method finalize;
+                               bt_component_class_sink_query_method query;
+                               bt_component_class_sink_accept_input_port_connection_method accept_input_port_connection;
+                               bt_component_class_sink_input_port_connected_method input_port_connected;
+                               bt_component_class_sink_graph_is_configured_method graph_is_configured;
                        } sink;
                } methods;
        };
@@ -585,57 +597,95 @@ enum bt_plugin_status bt_plugin_so_init(
                                        abort();
                                }
                                break;
-                       case BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTE_TYPE_INPUT_PORT_DISCONNECTED_METHOD:
+                       case BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTE_TYPE_GRAPH_IS_CONFIGURED_METHOD:
                                switch (cc_type) {
+                               case BT_COMPONENT_CLASS_TYPE_SINK:
+                                       cc_full_descr->methods.sink.graph_is_configured =
+                                               cur_cc_descr_attr->value.sink_graph_is_configured_method;
+                                       break;
+                               default:
+                                       abort();
+                               }
+                               break;
+                       case BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTE_TYPE_MSG_ITER_INIT_METHOD:
+                               switch (cc_type) {
+                               case BT_COMPONENT_CLASS_TYPE_SOURCE:
+                                       cc_full_descr->methods.source.msg_iter_init =
+                                               cur_cc_descr_attr->value.source_msg_iter_init_method;
+                                       break;
                                case BT_COMPONENT_CLASS_TYPE_FILTER:
-                                       cc_full_descr->methods.filter.input_port_disconnected =
-                                               cur_cc_descr_attr->value.filter_input_port_disconnected_method;
+                                       cc_full_descr->methods.filter.msg_iter_init =
+                                               cur_cc_descr_attr->value.filter_msg_iter_init_method;
                                        break;
-                               case BT_COMPONENT_CLASS_TYPE_SINK:
-                                       cc_full_descr->methods.sink.input_port_disconnected =
-                                               cur_cc_descr_attr->value.sink_input_port_disconnected_method;
+                               default:
+                                       abort();
+                               }
+                               break;
+                       case BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTE_TYPE_MSG_ITER_FINALIZE_METHOD:
+                               switch (cc_type) {
+                               case BT_COMPONENT_CLASS_TYPE_SOURCE:
+                                       cc_full_descr->methods.source.msg_iter_finalize =
+                                               cur_cc_descr_attr->value.source_msg_iter_finalize_method;
+                                       break;
+                               case BT_COMPONENT_CLASS_TYPE_FILTER:
+                                       cc_full_descr->methods.filter.msg_iter_finalize =
+                                               cur_cc_descr_attr->value.filter_msg_iter_finalize_method;
+                                       break;
+                               default:
+                                       abort();
+                               }
+                               break;
+                       case BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTE_TYPE_MSG_ITER_SEEK_NS_FROM_ORIGIN_METHOD:
+                               switch (cc_type) {
+                               case BT_COMPONENT_CLASS_TYPE_SOURCE:
+                                       cc_full_descr->methods.source.msg_iter_seek_ns_from_origin =
+                                               cur_cc_descr_attr->value.source_msg_iter_seek_ns_from_origin_method;
+                                       break;
+                               case BT_COMPONENT_CLASS_TYPE_FILTER:
+                                       cc_full_descr->methods.filter.msg_iter_seek_ns_from_origin =
+                                               cur_cc_descr_attr->value.filter_msg_iter_seek_ns_from_origin_method;
                                        break;
                                default:
                                        abort();
                                }
                                break;
-                       case BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTE_TYPE_OUTPUT_PORT_DISCONNECTED_METHOD:
+                       case BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTE_TYPE_MSG_ITER_SEEK_BEGINNING_METHOD:
                                switch (cc_type) {
                                case BT_COMPONENT_CLASS_TYPE_SOURCE:
-                                       cc_full_descr->methods.source.output_port_disconnected =
-                                               cur_cc_descr_attr->value.source_output_port_disconnected_method;
+                                       cc_full_descr->methods.source.msg_iter_seek_beginning =
+                                               cur_cc_descr_attr->value.source_msg_iter_seek_beginning_method;
                                        break;
                                case BT_COMPONENT_CLASS_TYPE_FILTER:
-                                       cc_full_descr->methods.filter.output_port_disconnected =
-                                               cur_cc_descr_attr->value.filter_output_port_disconnected_method;
+                                       cc_full_descr->methods.filter.msg_iter_seek_beginning =
+                                               cur_cc_descr_attr->value.filter_msg_iter_seek_beginning_method;
                                        break;
                                default:
                                        abort();
                                }
                                break;
-                       case BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTE_TYPE_NOTIF_ITER_INIT_METHOD:
+                       case BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTE_TYPE_MSG_ITER_CAN_SEEK_NS_FROM_ORIGIN_METHOD:
                                switch (cc_type) {
                                case BT_COMPONENT_CLASS_TYPE_SOURCE:
-                                       cc_full_descr->methods.source.notif_iter_init =
-                                               cur_cc_descr_attr->value.source_notif_iter_init_method;
+                                       cc_full_descr->methods.source.msg_iter_can_seek_ns_from_origin =
+                                               cur_cc_descr_attr->value.source_msg_iter_can_seek_ns_from_origin_method;
                                        break;
                                case BT_COMPONENT_CLASS_TYPE_FILTER:
-                                       cc_full_descr->methods.filter.notif_iter_init =
-                                               cur_cc_descr_attr->value.filter_notif_iter_init_method;
+                                       cc_full_descr->methods.filter.msg_iter_can_seek_ns_from_origin =
+                                               cur_cc_descr_attr->value.filter_msg_iter_can_seek_ns_from_origin_method;
                                        break;
                                default:
                                        abort();
                                }
                                break;
-                       case BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTE_TYPE_NOTIF_ITER_FINALIZE_METHOD:
+                       case BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTE_TYPE_MSG_ITER_CAN_SEEK_BEGINNING_METHOD:
                                switch (cc_type) {
                                case BT_COMPONENT_CLASS_TYPE_SOURCE:
-                                       cc_full_descr->methods.source.notif_iter_finalize =
-                                               cur_cc_descr_attr->value.source_notif_iter_finalize_method;
+                                       cc_full_descr->methods.source.msg_iter_can_seek_beginning =
+                                               cur_cc_descr_attr->value.source_msg_iter_can_seek_beginning_method;
                                        break;
                                case BT_COMPONENT_CLASS_TYPE_FILTER:
-                                       cc_full_descr->methods.filter.notif_iter_finalize =
-                                               cur_cc_descr_attr->value.filter_notif_iter_finalize_method;
+                                       cc_full_descr->methods.filter.msg_iter_can_seek_beginning =
+                                               cur_cc_descr_attr->value.filter_msg_iter_can_seek_beginning_method;
                                        break;
                                default:
                                        abort();
@@ -673,13 +723,16 @@ enum bt_plugin_status bt_plugin_so_init(
 
        /* Initialize plugin */
        if (spec->init) {
+               enum bt_self_plugin_status init_status;
+
                BT_LOGD_STR("Calling user's plugin initialization function.");
-               status = spec->init(plugin);
+               init_status = spec->init((void *) plugin);
                BT_LOGD("User function returned: %s",
-                       bt_plugin_status_string(status));
+                       bt_self_plugin_status_string(init_status));
 
-               if (status < 0) {
+               if (init_status < 0) {
                        BT_LOGW_STR("User's plugin initialization function failed.");
+                       status = BT_PLUGIN_STATUS_ERROR;
                        goto end;
                }
        }
@@ -691,10 +744,10 @@ enum bt_plugin_status bt_plugin_so_init(
                struct comp_class_full_descriptor *cc_full_descr =
                        &g_array_index(comp_class_full_descriptors,
                                struct comp_class_full_descriptor, i);
-               struct bt_private_component_class *comp_class = NULL;
-               struct bt_private_component_class_source *src_comp_class = NULL;
-               struct bt_private_component_class_filter *flt_comp_class = NULL;
-               struct bt_private_component_class_sink *sink_comp_class = NULL;
+               struct bt_component_class *comp_class = NULL;
+               struct bt_component_class_source *src_comp_class = NULL;
+               struct bt_component_class_filter *flt_comp_class = NULL;
+               struct bt_component_class_sink *sink_comp_class = NULL;
 
                BT_LOGD("Creating and setting properties of plugin's component class: "
                        "plugin-path=\"%s\", plugin-name=\"%s\", "
@@ -709,24 +762,24 @@ enum bt_plugin_status bt_plugin_so_init(
 
                switch (cc_full_descr->descriptor->type) {
                case BT_COMPONENT_CLASS_TYPE_SOURCE:
-                       src_comp_class = bt_private_component_class_source_create(
+                       src_comp_class = bt_component_class_source_create(
                                cc_full_descr->descriptor->name,
-                               cc_full_descr->descriptor->methods.source.notif_iter_next);
-                       comp_class = bt_private_component_class_source_as_private_component_class(
+                               cc_full_descr->descriptor->methods.source.msg_iter_next);
+                       comp_class = bt_component_class_source_as_component_class(
                                src_comp_class);
                        break;
                case BT_COMPONENT_CLASS_TYPE_FILTER:
-                       flt_comp_class = bt_private_component_class_filter_create(
+                       flt_comp_class = bt_component_class_filter_create(
                                cc_full_descr->descriptor->name,
-                               cc_full_descr->descriptor->methods.source.notif_iter_next);
-                       comp_class = bt_private_component_class_filter_as_private_component_class(
+                               cc_full_descr->descriptor->methods.source.msg_iter_next);
+                       comp_class = bt_component_class_filter_as_component_class(
                                flt_comp_class);
                        break;
                case BT_COMPONENT_CLASS_TYPE_SINK:
-                       sink_comp_class = bt_private_component_class_sink_create(
+                       sink_comp_class = bt_component_class_sink_create(
                                cc_full_descr->descriptor->name,
                                cc_full_descr->descriptor->methods.sink.consume);
-                       comp_class = bt_private_component_class_sink_as_private_component_class(
+                       comp_class = bt_component_class_sink_as_component_class(
                                sink_comp_class);
                        break;
                default:
@@ -756,7 +809,7 @@ enum bt_plugin_status bt_plugin_so_init(
                }
 
                if (cc_full_descr->description) {
-                       ret = bt_private_component_class_set_description(
+                       ret = bt_component_class_set_description(
                                comp_class, cc_full_descr->description);
                        if (ret) {
                                BT_LOGE_STR("Cannot set component class's description.");
@@ -767,7 +820,7 @@ enum bt_plugin_status bt_plugin_so_init(
                }
 
                if (cc_full_descr->help) {
-                       ret = bt_private_component_class_set_help(comp_class,
+                       ret = bt_component_class_set_help(comp_class,
                                cc_full_descr->help);
                        if (ret) {
                                BT_LOGE_STR("Cannot set component class's help string.");
@@ -780,7 +833,7 @@ enum bt_plugin_status bt_plugin_so_init(
                switch (cc_full_descr->descriptor->type) {
                case BT_COMPONENT_CLASS_TYPE_SOURCE:
                        if (cc_full_descr->methods.source.init) {
-                               ret = bt_private_component_class_source_set_init_method(
+                               ret = bt_component_class_source_set_init_method(
                                        src_comp_class,
                                        cc_full_descr->methods.source.init);
                                if (ret) {
@@ -792,7 +845,7 @@ enum bt_plugin_status bt_plugin_so_init(
                        }
 
                        if (cc_full_descr->methods.source.finalize) {
-                               ret = bt_private_component_class_source_set_finalize_method(
+                               ret = bt_component_class_source_set_finalize_method(
                                        src_comp_class,
                                        cc_full_descr->methods.source.finalize);
                                if (ret) {
@@ -804,7 +857,7 @@ enum bt_plugin_status bt_plugin_so_init(
                        }
 
                        if (cc_full_descr->methods.source.query) {
-                               ret = bt_private_component_class_source_set_query_method(
+                               ret = bt_component_class_source_set_query_method(
                                        src_comp_class,
                                        cc_full_descr->methods.source.query);
                                if (ret) {
@@ -816,7 +869,7 @@ enum bt_plugin_status bt_plugin_so_init(
                        }
 
                        if (cc_full_descr->methods.source.accept_output_port_connection) {
-                               ret = bt_private_component_class_source_set_accept_output_port_connection_method(
+                               ret = bt_component_class_source_set_accept_output_port_connection_method(
                                        src_comp_class,
                                        cc_full_descr->methods.source.accept_output_port_connection);
                                if (ret) {
@@ -828,7 +881,7 @@ enum bt_plugin_status bt_plugin_so_init(
                        }
 
                        if (cc_full_descr->methods.source.output_port_connected) {
-                               ret = bt_private_component_class_source_set_output_port_connected_method(
+                               ret = bt_component_class_source_set_output_port_connected_method(
                                        src_comp_class,
                                        cc_full_descr->methods.source.output_port_connected);
                                if (ret) {
@@ -839,36 +892,72 @@ enum bt_plugin_status bt_plugin_so_init(
                                }
                        }
 
-                       if (cc_full_descr->methods.source.output_port_disconnected) {
-                               ret = bt_private_component_class_source_set_output_port_disconnected_method(
+                       if (cc_full_descr->methods.source.msg_iter_init) {
+                               ret = bt_component_class_source_set_message_iterator_init_method(
                                        src_comp_class,
-                                       cc_full_descr->methods.source.output_port_disconnected);
+                                       cc_full_descr->methods.source.msg_iter_init);
                                if (ret) {
-                                       BT_LOGE_STR("Cannot set source component class's \"output port disconnected\" method.");
+                                       BT_LOGE_STR("Cannot set source component class's message iterator initialization method.");
                                        status = BT_PLUGIN_STATUS_ERROR;
                                        BT_OBJECT_PUT_REF_AND_RESET(src_comp_class);
                                        goto end;
                                }
                        }
 
-                       if (cc_full_descr->methods.source.notif_iter_init) {
-                               ret = bt_private_component_class_source_set_notification_iterator_init_method(
+                       if (cc_full_descr->methods.source.msg_iter_finalize) {
+                               ret = bt_component_class_source_set_message_iterator_finalize_method(
                                        src_comp_class,
-                                       cc_full_descr->methods.source.notif_iter_init);
+                                       cc_full_descr->methods.source.msg_iter_finalize);
                                if (ret) {
-                                       BT_LOGE_STR("Cannot set source component class's notification iterator initialization method.");
+                                       BT_LOGE_STR("Cannot set source component class's message iterator finalization method.");
                                        status = BT_PLUGIN_STATUS_ERROR;
                                        BT_OBJECT_PUT_REF_AND_RESET(src_comp_class);
                                        goto end;
                                }
                        }
 
-                       if (cc_full_descr->methods.source.notif_iter_finalize) {
-                               ret = bt_private_component_class_source_set_notification_iterator_finalize_method(
+                       if (cc_full_descr->methods.source.msg_iter_seek_ns_from_origin) {
+                               ret = bt_component_class_source_set_message_iterator_seek_ns_from_origin_method(
                                        src_comp_class,
-                                       cc_full_descr->methods.source.notif_iter_finalize);
+                                       cc_full_descr->methods.source.msg_iter_seek_ns_from_origin);
                                if (ret) {
-                                       BT_LOGE_STR("Cannot set source component class's notification iterator finalization method.");
+                                       BT_LOGE_STR("Cannot set source component class's message iterator \"seek nanoseconds from origin\" method.");
+                                       status = BT_PLUGIN_STATUS_ERROR;
+                                       BT_OBJECT_PUT_REF_AND_RESET(src_comp_class);
+                                       goto end;
+                               }
+                       }
+
+                       if (cc_full_descr->methods.source.msg_iter_seek_beginning) {
+                               ret = bt_component_class_source_set_message_iterator_seek_beginning_method(
+                                       src_comp_class,
+                                       cc_full_descr->methods.source.msg_iter_seek_beginning);
+                               if (ret) {
+                                       BT_LOGE_STR("Cannot set source component class's message iterator \"seek beginning\" method.");
+                                       status = BT_PLUGIN_STATUS_ERROR;
+                                       BT_OBJECT_PUT_REF_AND_RESET(src_comp_class);
+                                       goto end;
+                               }
+                       }
+
+                       if (cc_full_descr->methods.source.msg_iter_can_seek_ns_from_origin) {
+                               ret = bt_component_class_source_set_message_iterator_can_seek_ns_from_origin_method(
+                                       src_comp_class,
+                                       cc_full_descr->methods.source.msg_iter_can_seek_ns_from_origin);
+                               if (ret) {
+                                       BT_LOGE_STR("Cannot set source component class's message iterator \"can seek nanoseconds from origin\" method.");
+                                       status = BT_PLUGIN_STATUS_ERROR;
+                                       BT_OBJECT_PUT_REF_AND_RESET(src_comp_class);
+                                       goto end;
+                               }
+                       }
+
+                       if (cc_full_descr->methods.source.msg_iter_can_seek_beginning) {
+                               ret = bt_component_class_source_set_message_iterator_can_seek_beginning_method(
+                                       src_comp_class,
+                                       cc_full_descr->methods.source.msg_iter_can_seek_beginning);
+                               if (ret) {
+                                       BT_LOGE_STR("Cannot set source component class's message iterator \"can seek beginning\" method.");
                                        status = BT_PLUGIN_STATUS_ERROR;
                                        BT_OBJECT_PUT_REF_AND_RESET(src_comp_class);
                                        goto end;
@@ -878,7 +967,7 @@ enum bt_plugin_status bt_plugin_so_init(
                        break;
                case BT_COMPONENT_CLASS_TYPE_FILTER:
                        if (cc_full_descr->methods.filter.init) {
-                               ret = bt_private_component_class_filter_set_init_method(
+                               ret = bt_component_class_filter_set_init_method(
                                        flt_comp_class,
                                        cc_full_descr->methods.filter.init);
                                if (ret) {
@@ -890,7 +979,7 @@ enum bt_plugin_status bt_plugin_so_init(
                        }
 
                        if (cc_full_descr->methods.filter.finalize) {
-                               ret = bt_private_component_class_filter_set_finalize_method(
+                               ret = bt_component_class_filter_set_finalize_method(
                                        flt_comp_class,
                                        cc_full_descr->methods.filter.finalize);
                                if (ret) {
@@ -902,7 +991,7 @@ enum bt_plugin_status bt_plugin_so_init(
                        }
 
                        if (cc_full_descr->methods.filter.query) {
-                               ret = bt_private_component_class_filter_set_query_method(
+                               ret = bt_component_class_filter_set_query_method(
                                        flt_comp_class,
                                        cc_full_descr->methods.filter.query);
                                if (ret) {
@@ -914,7 +1003,7 @@ enum bt_plugin_status bt_plugin_so_init(
                        }
 
                        if (cc_full_descr->methods.filter.accept_input_port_connection) {
-                               ret = bt_private_component_class_filter_set_accept_input_port_connection_method(
+                               ret = bt_component_class_filter_set_accept_input_port_connection_method(
                                        flt_comp_class,
                                        cc_full_descr->methods.filter.accept_input_port_connection);
                                if (ret) {
@@ -926,7 +1015,7 @@ enum bt_plugin_status bt_plugin_so_init(
                        }
 
                        if (cc_full_descr->methods.filter.accept_output_port_connection) {
-                               ret = bt_private_component_class_filter_set_accept_output_port_connection_method(
+                               ret = bt_component_class_filter_set_accept_output_port_connection_method(
                                        flt_comp_class,
                                        cc_full_descr->methods.filter.accept_output_port_connection);
                                if (ret) {
@@ -938,7 +1027,7 @@ enum bt_plugin_status bt_plugin_so_init(
                        }
 
                        if (cc_full_descr->methods.filter.input_port_connected) {
-                               ret = bt_private_component_class_filter_set_input_port_connected_method(
+                               ret = bt_component_class_filter_set_input_port_connected_method(
                                        flt_comp_class,
                                        cc_full_descr->methods.filter.input_port_connected);
                                if (ret) {
@@ -950,7 +1039,7 @@ enum bt_plugin_status bt_plugin_so_init(
                        }
 
                        if (cc_full_descr->methods.filter.output_port_connected) {
-                               ret = bt_private_component_class_filter_set_output_port_connected_method(
+                               ret = bt_component_class_filter_set_output_port_connected_method(
                                        flt_comp_class,
                                        cc_full_descr->methods.filter.output_port_connected);
                                if (ret) {
@@ -961,48 +1050,72 @@ enum bt_plugin_status bt_plugin_so_init(
                                }
                        }
 
-                       if (cc_full_descr->methods.filter.input_port_disconnected) {
-                               ret = bt_private_component_class_filter_set_input_port_disconnected_method(
+                       if (cc_full_descr->methods.filter.msg_iter_init) {
+                               ret = bt_component_class_filter_set_message_iterator_init_method(
+                                       flt_comp_class,
+                                       cc_full_descr->methods.filter.msg_iter_init);
+                               if (ret) {
+                                       BT_LOGE_STR("Cannot set filter component class's message iterator initialization method.");
+                                       status = BT_PLUGIN_STATUS_ERROR;
+                                       BT_OBJECT_PUT_REF_AND_RESET(flt_comp_class);
+                                       goto end;
+                               }
+                       }
+
+                       if (cc_full_descr->methods.filter.msg_iter_finalize) {
+                               ret = bt_component_class_filter_set_message_iterator_finalize_method(
+                                       flt_comp_class,
+                                       cc_full_descr->methods.filter.msg_iter_finalize);
+                               if (ret) {
+                                       BT_LOGE_STR("Cannot set filter component class's message iterator finalization method.");
+                                       status = BT_PLUGIN_STATUS_ERROR;
+                                       BT_OBJECT_PUT_REF_AND_RESET(flt_comp_class);
+                                       goto end;
+                               }
+                       }
+
+                       if (cc_full_descr->methods.filter.msg_iter_seek_ns_from_origin) {
+                               ret = bt_component_class_filter_set_message_iterator_seek_ns_from_origin_method(
                                        flt_comp_class,
-                                       cc_full_descr->methods.filter.input_port_disconnected);
+                                       cc_full_descr->methods.filter.msg_iter_seek_ns_from_origin);
                                if (ret) {
-                                       BT_LOGE_STR("Cannot set filter component class's \"input port disconnected\" method.");
+                                       BT_LOGE_STR("Cannot set filter component class's message iterator \"seek nanoseconds from origin\" method.");
                                        status = BT_PLUGIN_STATUS_ERROR;
                                        BT_OBJECT_PUT_REF_AND_RESET(flt_comp_class);
                                        goto end;
                                }
                        }
 
-                       if (cc_full_descr->methods.filter.output_port_disconnected) {
-                               ret = bt_private_component_class_filter_set_output_port_disconnected_method(
+                       if (cc_full_descr->methods.filter.msg_iter_seek_beginning) {
+                               ret = bt_component_class_filter_set_message_iterator_seek_beginning_method(
                                        flt_comp_class,
-                                       cc_full_descr->methods.filter.output_port_disconnected);
+                                       cc_full_descr->methods.filter.msg_iter_seek_beginning);
                                if (ret) {
-                                       BT_LOGE_STR("Cannot set filter component class's \"output port disconnected\" method.");
+                                       BT_LOGE_STR("Cannot set filter component class's message iterator \"seek beginning\" method.");
                                        status = BT_PLUGIN_STATUS_ERROR;
                                        BT_OBJECT_PUT_REF_AND_RESET(flt_comp_class);
                                        goto end;
                                }
                        }
 
-                       if (cc_full_descr->methods.filter.notif_iter_init) {
-                               ret = bt_private_component_class_filter_set_notification_iterator_init_method(
+                       if (cc_full_descr->methods.filter.msg_iter_can_seek_ns_from_origin) {
+                               ret = bt_component_class_filter_set_message_iterator_can_seek_ns_from_origin_method(
                                        flt_comp_class,
-                                       cc_full_descr->methods.filter.notif_iter_init);
+                                       cc_full_descr->methods.filter.msg_iter_can_seek_ns_from_origin);
                                if (ret) {
-                                       BT_LOGE_STR("Cannot set filter component class's notification iterator initialization method.");
+                                       BT_LOGE_STR("Cannot set filter component class's message iterator \"can seek nanoseconds from origin\" method.");
                                        status = BT_PLUGIN_STATUS_ERROR;
                                        BT_OBJECT_PUT_REF_AND_RESET(flt_comp_class);
                                        goto end;
                                }
                        }
 
-                       if (cc_full_descr->methods.filter.notif_iter_finalize) {
-                               ret = bt_private_component_class_filter_set_notification_iterator_finalize_method(
+                       if (cc_full_descr->methods.filter.msg_iter_can_seek_beginning) {
+                               ret = bt_component_class_filter_set_message_iterator_can_seek_beginning_method(
                                        flt_comp_class,
-                                       cc_full_descr->methods.filter.notif_iter_finalize);
+                                       cc_full_descr->methods.filter.msg_iter_can_seek_beginning);
                                if (ret) {
-                                       BT_LOGE_STR("Cannot set filter component class's notification iterator finalization method.");
+                                       BT_LOGE_STR("Cannot set filter component class's message iterator \"can seek beginning\" method.");
                                        status = BT_PLUGIN_STATUS_ERROR;
                                        BT_OBJECT_PUT_REF_AND_RESET(flt_comp_class);
                                        goto end;
@@ -1012,7 +1125,7 @@ enum bt_plugin_status bt_plugin_so_init(
                        break;
                case BT_COMPONENT_CLASS_TYPE_SINK:
                        if (cc_full_descr->methods.sink.init) {
-                               ret = bt_private_component_class_sink_set_init_method(
+                               ret = bt_component_class_sink_set_init_method(
                                        sink_comp_class,
                                        cc_full_descr->methods.sink.init);
                                if (ret) {
@@ -1024,7 +1137,7 @@ enum bt_plugin_status bt_plugin_so_init(
                        }
 
                        if (cc_full_descr->methods.sink.finalize) {
-                               ret = bt_private_component_class_sink_set_finalize_method(
+                               ret = bt_component_class_sink_set_finalize_method(
                                        sink_comp_class,
                                        cc_full_descr->methods.sink.finalize);
                                if (ret) {
@@ -1036,7 +1149,7 @@ enum bt_plugin_status bt_plugin_so_init(
                        }
 
                        if (cc_full_descr->methods.sink.query) {
-                               ret = bt_private_component_class_sink_set_query_method(
+                               ret = bt_component_class_sink_set_query_method(
                                        sink_comp_class,
                                        cc_full_descr->methods.sink.query);
                                if (ret) {
@@ -1048,7 +1161,7 @@ enum bt_plugin_status bt_plugin_so_init(
                        }
 
                        if (cc_full_descr->methods.sink.accept_input_port_connection) {
-                               ret = bt_private_component_class_sink_set_accept_input_port_connection_method(
+                               ret = bt_component_class_sink_set_accept_input_port_connection_method(
                                        sink_comp_class,
                                        cc_full_descr->methods.sink.accept_input_port_connection);
                                if (ret) {
@@ -1060,7 +1173,7 @@ enum bt_plugin_status bt_plugin_so_init(
                        }
 
                        if (cc_full_descr->methods.sink.input_port_connected) {
-                               ret = bt_private_component_class_sink_set_input_port_connected_method(
+                               ret = bt_component_class_sink_set_input_port_connected_method(
                                        sink_comp_class,
                                        cc_full_descr->methods.sink.input_port_connected);
                                if (ret) {
@@ -1071,12 +1184,12 @@ enum bt_plugin_status bt_plugin_so_init(
                                }
                        }
 
-                       if (cc_full_descr->methods.sink.input_port_disconnected) {
-                               ret = bt_private_component_class_sink_set_input_port_disconnected_method(
+                       if (cc_full_descr->methods.sink.graph_is_configured) {
+                               ret = bt_component_class_sink_set_graph_is_configured_method(
                                        sink_comp_class,
-                                       cc_full_descr->methods.sink.input_port_disconnected);
+                                       cc_full_descr->methods.sink.graph_is_configured);
                                if (ret) {
-                                       BT_LOGE_STR("Cannot set sink component class's \"input port disconnected\" method.");
+                                       BT_LOGE_STR("Cannot set sink component class's \"graph is configured\" method.");
                                        status = BT_PLUGIN_STATUS_ERROR;
                                        BT_OBJECT_PUT_REF_AND_RESET(sink_comp_class);
                                        goto end;
@@ -1130,7 +1243,8 @@ struct bt_plugin *bt_plugin_so_create_empty(
        }
 
        spec = plugin->spec_data;
-       spec->shared_lib_handle = bt_object_get_ref(shared_lib_handle);
+       spec->shared_lib_handle = shared_lib_handle;
+       bt_object_get_no_null_check(spec->shared_lib_handle);
        goto end;
 
 error:
@@ -1222,7 +1336,7 @@ struct bt_plugin_set *bt_plugin_so_create_all_from_sections(
                         * _trying_ to open this file as a compatible
                         * Babeltrace plugin: if it's not, it's not an
                         * error. And because this can be tried during
-                        * bt_plugin_create_all_from_dir(), it's not
+                        * bt_plugin_find_all_from_dir(), it's not
                         * even a warning.
                         */
                        BT_LOGD("Unknown ABI major version: abi-major=%d",
@@ -1249,7 +1363,7 @@ struct bt_plugin_set *bt_plugin_so_create_all_from_sections(
                         * _trying_ to open this file as a compatible
                         * Babeltrace plugin: if it's not, it's not an
                         * error. And because this can be tried during
-                        * bt_plugin_create_all_from_dir(), it's not
+                        * bt_plugin_find_all_from_dir(), it's not
                         * even a warning.
                         */
                        BT_LOGD_STR("Cannot initialize SO plugin object from sections.");
@@ -1488,7 +1602,6 @@ void plugin_comp_class_destroy_listener(struct bt_component_class *comp_class,
                "comp-cls-addr=%p", comp_class);
 }
 
-BT_HIDDEN
 void bt_plugin_so_on_add_component_class(struct bt_plugin *plugin,
                struct bt_component_class *comp_class)
 {
@@ -1498,7 +1611,8 @@ void bt_plugin_so_on_add_component_class(struct bt_plugin *plugin,
        BT_ASSERT(plugin->type == BT_PLUGIN_TYPE_SO);
 
        bt_list_add(&comp_class->node, &component_class_list);
-       comp_class->so_handle = bt_object_get_ref(spec->shared_lib_handle);
+       comp_class->so_handle = spec->shared_lib_handle;
+       bt_object_get_no_null_check(comp_class->so_handle);
 
        /* Add our custom destroy listener */
        bt_component_class_add_destroy_listener(comp_class,
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