#include <babeltrace/plugin/sink.h>
#include <babeltrace/plugin/filter.h>
#include <babeltrace/plugin/plugin-system.h>
+#include <babeltrace/values.h>
#ifdef __cplusplus
extern "C" {
#endif
+/**
+ * Status code. Errors are always negative.
+ */
+enum bt_component_factory_status {
+ /** General error. */
+ BT_COMPONENT_FACTORY_STATUS_ERROR = -128,
+
+ /** Invalid plugin. */
+ BT_COMPONENT_FACTORY_STATUS_INVAL_PLUGIN = -6,
+
+ /** Invalid arguments. */
+ BT_COMPONENT_FACTORY_STATUS_INVAL = -5,
+
+ /** Memory allocation failure. */
+ BT_COMPONENT_FACTORY_STATUS_NOMEM = -4,
+
+ /** I/O error. */
+ BT_COMPONENT_FACTORY_STATUS_IO = -3,
+
+ /** No such file or directory. */
+ BT_COMPONENT_FACTORY_STATUS_NOENT = -2,
+
+ /** Operation not permitted. */
+ BT_COMPONENT_FACTORY_STATUS_PERM = -1,
+
+ /** No error, okay. */
+ BT_COMPONENT_FACTORY_STATUS_OK = 0,
+};
+
struct bt_component_factory;
-typedef struct bt_component *(*bt_component_init_cb)(
- struct bt_component *component);
+/**
+ * Create a component factory.
+ *
+ * @returns An instance of component factory
+ */
+extern struct bt_component_factory *bt_component_factory_create(void);
-typedef struct bt_component *(*bt_component_fini_cb)(
- struct bt_component *component);
+/**
+ * Get the number of component classes registered to the component factory.
+ *
+ * @param factory A component factory instance
+ * @returns The number of component classes registered to the
+ * component factory, or a negative value on error.
+ */
+extern int bt_component_factory_get_component_class_count(
+ struct bt_component_factory *factory);
+
+/**
+ * Get component class at index.
+ *
+ * @param factory A component factory instance
+ * @param index Index of the component class to return
+ * @returns A component class instance, NULL on error.
+ */
+extern struct bt_component_class *bt_component_factory_get_component_class_index(
+ struct bt_component_factory *factory, int index);
-enum bt_component_status bt_component_factory_create(const char *path);
+/**
+ * Look-up component class.
+ *
+ * @param factory A component factory instance
+ * @param plugin_name Name of the plug-in which registered the
+ * component class
+ * @param type Component type (@see #bt_component_type)
+ * @param component_name Component name
+ * @returns A component class instance, NULL on error.
+ */
+extern struct bt_component_class *bt_component_factory_get_component_class(
+ struct bt_component_factory *factory,
+ const char *plugin_name, enum bt_component_type type,
+ const char *component_name);
-enum bt_component_status bt_component_factory_register_source_component_class(
- struct bt_component_factory *factory, const char *name,
- bt_component_init_cb init, bt_component_fini_cb fini,
- bt_component_source_iterator_create_cb iterator_create_cb);
+/**
+ * Recursively load and register Babeltrace plugins under a given path.
+ *
+ * Path will be traversed recursively if it is a directory, otherwise only the
+ * provided file will be loaded.
+ *
+ * @param factory A component factory instance
+ * @param path A path to a file or directory
+ * @returns One of #bt_component_factory_status values
+ */
+extern enum bt_component_factory_status bt_component_factory_load(
+ struct bt_component_factory *factory, const char *path);
-enum bt_component_status bt_component_factory_register_sink_component_class(
- struct bt_component_factory *factory, const char *name,
- bt_component_init_cb init, bt_component_fini_cb fini,
- bt_component_sink_handle_notification_cb handle_notification_cb);
+extern enum bt_component_factory_status
+bt_component_factory_register_source_component_class(
+ struct bt_component_factory *factory, const char *name,
+ bt_component_init_cb init);
-void bt_component_factory_destroy(struct bt_component_factory *factory);
+extern enum bt_component_factory_status
+bt_component_factory_register_sink_component_class(
+ struct bt_component_factory *factory, const char *name,
+ bt_component_init_cb init);
#ifdef __cplusplus
}