[babeltrace.git] / src / lib / graph / component-class-sink-simple.c

/*
 * SPDX-License-Identifier: MIT
 *
 * Copyright 2017-2019 Philippe Proulx <pproulx@efficios.com>
 */

#define BT_LOG_TAG "LIB/COMPONENT-CLASS-SINK-SIMPLE"
#include "lib/logging.h"

#include "common/assert.h"
#include "common/common.h"
#include "lib/assert-cond.h"
#include "lib/object.h"
#include <babeltrace2/graph/component-class.h>
#include <babeltrace2/graph/self-component-port.h>
#include <babeltrace2/graph/self-component.h>
#include <babeltrace2/graph/message-iterator.h>
#include <glib.h>

#include "component-class-sink-simple.h"
#include "lib/func-status.h"

/*
 * We keep a single simple sink component class reference. It's created
 * the first time bt_component_class_sink_simple_borrow() is called and
 * put by the put_simple_sink_component_class() library destructor.
 */
static
struct bt_component_class_sink *simple_comp_cls;

struct simple_sink_data {
	bt_message_iterator *msg_iter;
	struct simple_sink_init_method_data init_method_data;
};

static
enum bt_component_class_initialize_method_status simple_sink_init(
		bt_self_component_sink *self_comp,
		bt_self_component_sink_configuration *config,
		const struct bt_value *params, void *init_method_data)
{
	int status = BT_FUNC_STATUS_OK;
	struct simple_sink_data *data = NULL;

	data = g_new0(struct simple_sink_data, 1);
	if (!data) {
		BT_LIB_LOGE_APPEND_CAUSE(
			"Failed to allocate simple sink component private data.");
		status = BT_FUNC_STATUS_MEMORY_ERROR;
		goto end;
	}

	BT_ASSERT(init_method_data);
	data->init_method_data =
		*((struct simple_sink_init_method_data *) init_method_data);

	/* Add input port */
	status = bt_self_component_sink_add_input_port(self_comp, "in",
		NULL, NULL);
	if (status != BT_FUNC_STATUS_OK) {
		BT_LIB_LOGE_APPEND_CAUSE(
			"Cannot add input port to simple sink component.");
		goto end;
	}

	bt_self_component_set_data(
		bt_self_component_sink_as_self_component(self_comp), data);

end:
	return status;
}

static
void simple_sink_finalize(struct bt_self_component_sink *self_comp)
{
	struct simple_sink_data *data = bt_self_component_get_data(
		bt_self_component_sink_as_self_component(self_comp));

	if (data) {
		if (data->init_method_data.finalize_func) {
			/* Call user's finalization function */
			data->init_method_data.finalize_func(
				data->init_method_data.user_data);
		}

		BT_OBJECT_PUT_REF_AND_RESET(data->msg_iter);
		g_free(data);
	}
}

static
enum bt_component_class_sink_graph_is_configured_method_status
simple_sink_graph_is_configured(
	bt_self_component_sink *self_comp)
{
	bt_component_class_sink_graph_is_configured_method_status status;
	bt_message_iterator_create_from_sink_component_status
		msg_iter_status;
	struct simple_sink_data *data = bt_self_component_get_data(
		bt_self_component_sink_as_self_component(self_comp));

	struct bt_self_component_port_input *self_port =
		bt_self_component_sink_borrow_input_port_by_name(self_comp,
			"in");

	if (!bt_port_is_connected(bt_self_component_port_as_port(
			bt_self_component_port_input_as_self_component_port(self_port)))) {
		BT_LIB_LOGE_APPEND_CAUSE(
			"Simple sink component's input port is not connected: "
			"%![comp-]+c, %![port-]+p", self_comp, self_port);
		status = BT_COMPONENT_CLASS_SINK_GRAPH_IS_CONFIGURED_METHOD_STATUS_ERROR;
		goto end;
	}

	BT_ASSERT(data);
	msg_iter_status = bt_message_iterator_create_from_sink_component(
		self_comp, self_port, &data->msg_iter);
	if (msg_iter_status != BT_MESSAGE_ITERATOR_CREATE_FROM_SINK_COMPONENT_STATUS_OK) {
		BT_LIB_LOGE_APPEND_CAUSE(
			"Cannot create input port message iterator: "
			"%![comp-]+c, %![port-]+p", self_comp, self_port);
		status = (int) msg_iter_status;
		goto end;
	}

	if (data->init_method_data.init_func) {
		bt_graph_simple_sink_component_initialize_func_status init_status;

		/* Call user's initialization function */
		init_status = data->init_method_data.init_func(data->msg_iter,
			data->init_method_data.user_data);
		if (init_status != BT_GRAPH_SIMPLE_SINK_COMPONENT_INITIALIZE_FUNC_STATUS_OK) {
			BT_LIB_LOGW_APPEND_CAUSE(
				"Simple sink component's user's initialization function failed: "
				"status=%s, %![comp-]+c, %![port-]+p",
				bt_common_func_status_string(init_status),
				self_comp, self_port);
			status = (int) init_status;
			goto end;
		}
	}

	status = BT_COMPONENT_CLASS_SINK_GRAPH_IS_CONFIGURED_METHOD_STATUS_OK;

end:
	return status;
}

static
enum bt_component_class_sink_consume_method_status simple_sink_consume(
		struct bt_self_component_sink *self_comp)
{
	int status;
	struct simple_sink_data *data = bt_self_component_get_data(
		bt_self_component_sink_as_self_component(self_comp));

	BT_ASSERT_DBG(data);
	BT_ASSERT_DBG(data->init_method_data.consume_func);
	BT_ASSERT_DBG(data->msg_iter);

	/* Call user's "consume" function */
	status = data->init_method_data.consume_func(data->msg_iter,
		data->init_method_data.user_data);
	if (status < 0) {
		BT_LIB_LOGW_APPEND_CAUSE(
			"Simple sink component's user's \"consume\" function failed: "
			"status=%s, %![comp-]+c",
			bt_common_func_status_string(status), self_comp);
	}

	return status;
}

BT_HIDDEN
struct bt_component_class_sink *bt_component_class_sink_simple_borrow(void)
{
	enum bt_component_class_set_method_status set_method_status;

	if (simple_comp_cls) {
		goto end;
	}

	simple_comp_cls = bt_component_class_sink_create("simple-sink",
		simple_sink_consume);
	if (!simple_comp_cls) {
		BT_LIB_LOGE_APPEND_CAUSE(
			"Cannot create simple sink component class.");
		goto end;
	}

	set_method_status = bt_component_class_sink_set_initialize_method(
		simple_comp_cls, simple_sink_init);
	BT_ASSERT(set_method_status == BT_FUNC_STATUS_OK);
	set_method_status = bt_component_class_sink_set_finalize_method(
		simple_comp_cls, simple_sink_finalize);
	BT_ASSERT(set_method_status == BT_FUNC_STATUS_OK);
	set_method_status = bt_component_class_sink_set_graph_is_configured_method(
		simple_comp_cls, simple_sink_graph_is_configured);
	BT_ASSERT(set_method_status == BT_FUNC_STATUS_OK);

end:
	return simple_comp_cls;
}

__attribute__((destructor)) static
void put_simple_sink_component_class(void) {
	BT_OBJECT_PUT_REF_AND_RESET(simple_comp_cls);
}
Commit	Line	Data
078033ed	1	/*
0235b0db	2	* SPDX-License-Identifier: MIT
078033ed	3	*
0235b0db	4	* Copyright 2017-2019 Philippe Proulx <pproulx@efficios.com>
078033ed PP	5	*/
	6
	7	#define BT_LOG_TAG "LIB/COMPONENT-CLASS-SINK-SIMPLE"
	8	#include "lib/logging.h"
	9
	10	#include "common/assert.h"
	11	#include "common/common.h"
d98421f2	12	#include "lib/assert-cond.h"
078033ed	13	#include "lib/object.h"
43c59509	14	#include <babeltrace2/graph/component-class.h>
078033ed	15	#include <babeltrace2/graph/self-component-port.h>
078033ed	16	#include <babeltrace2/graph/self-component.h>
43c59509	17	#include <babeltrace2/graph/message-iterator.h>
078033ed PP	18	#include <glib.h>
	19
	20	#include "component-class-sink-simple.h"
	21	#include "lib/func-status.h"
	22
	23	/*
	24	* We keep a single simple sink component class reference. It's created
	25	* the first time bt_component_class_sink_simple_borrow() is called and
	26	* put by the put_simple_sink_component_class() library destructor.
	27	*/
	28	static
	29	struct bt_component_class_sink *simple_comp_cls;
	30
	31	struct simple_sink_data {
9a2c8b8e	32	bt_message_iterator *msg_iter;
078033ed PP	33	struct simple_sink_init_method_data init_method_data;
	34	};
	35
	36	static
21a9f056	37	enum bt_component_class_initialize_method_status simple_sink_init(
59225a3e SM	38	bt_self_component_sink *self_comp,
59225a3e SM	39	bt_self_component_sink_configuration *config,
078033ed PP	40	const struct bt_value params, void init_method_data)
	41	{
	42	int status = BT_FUNC_STATUS_OK;
	43	struct simple_sink_data *data = NULL;
	44
	45	data = g_new0(struct simple_sink_data, 1);
	46	if (!data) {
	47	BT_LIB_LOGE_APPEND_CAUSE(
	48	"Failed to allocate simple sink component private data.");
	49	status = BT_FUNC_STATUS_MEMORY_ERROR;
	50	goto end;
	51	}
	52
	53	BT_ASSERT(init_method_data);
	54	data->init_method_data =
	55	((struct simple_sink_init_method_data ) init_method_data);
	56
	57	/* Add input port */
	58	status = bt_self_component_sink_add_input_port(self_comp, "in",
	59	NULL, NULL);
	60	if (status != BT_FUNC_STATUS_OK) {
	61	BT_LIB_LOGE_APPEND_CAUSE(
	62	"Cannot add input port to simple sink component.");
	63	goto end;
	64	}
	65
	66	bt_self_component_set_data(
	67	bt_self_component_sink_as_self_component(self_comp), data);
	68
	69	end:
	70	return status;
	71	}
	72
	73	static
	74	void simple_sink_finalize(struct bt_self_component_sink *self_comp)
	75	{
	76	struct simple_sink_data *data = bt_self_component_get_data(
	77	bt_self_component_sink_as_self_component(self_comp));
	78
	79	if (data) {
	80	if (data->init_method_data.finalize_func) {
	81	/* Call user's finalization function */
	82	data->init_method_data.finalize_func(
	83	data->init_method_data.user_data);
	84	}
	85
	86	BT_OBJECT_PUT_REF_AND_RESET(data->msg_iter);
	87	g_free(data);
	88	}
	89	}
	90
	91	static
	92	enum bt_component_class_sink_graph_is_configured_method_status
	93	simple_sink_graph_is_configured(
	94	bt_self_component_sink *self_comp)
	95	{
e803df70	96	bt_component_class_sink_graph_is_configured_method_status status;
9a2c8b8e	97	bt_message_iterator_create_from_sink_component_status
e803df70	98	msg_iter_status;
078033ed PP	99	struct simple_sink_data *data = bt_self_component_get_data(
	100	bt_self_component_sink_as_self_component(self_comp));
	101
	102	struct bt_self_component_port_input *self_port =
	103	bt_self_component_sink_borrow_input_port_by_name(self_comp,
	104	"in");
	105
	106	if (!bt_port_is_connected(bt_self_component_port_as_port(
	107	bt_self_component_port_input_as_self_component_port(self_port)))) {
	108	BT_LIB_LOGE_APPEND_CAUSE(
	109	"Simple sink component's input port is not connected: "
	110	"%![comp-]+c, %![port-]+p", self_comp, self_port);
e803df70	111	status = BT_COMPONENT_CLASS_SINK_GRAPH_IS_CONFIGURED_METHOD_STATUS_ERROR;
078033ed PP	112	goto end;
	113	}
	114
	115	BT_ASSERT(data);
9a2c8b8e	116	msg_iter_status = bt_message_iterator_create_from_sink_component(
e803df70	117	self_comp, self_port, &data->msg_iter);
9a2c8b8e	118	if (msg_iter_status != BT_MESSAGE_ITERATOR_CREATE_FROM_SINK_COMPONENT_STATUS_OK) {
078033ed PP	119	BT_LIB_LOGE_APPEND_CAUSE(
	120	"Cannot create input port message iterator: "
	121	"%![comp-]+c, %![port-]+p", self_comp, self_port);
e803df70	122	status = (int) msg_iter_status;
078033ed PP	123	goto end;
	124	}
	125
	126	if (data->init_method_data.init_func) {
21a9f056	127	bt_graph_simple_sink_component_initialize_func_status init_status;
e803df70	128
078033ed	129	/* Call user's initialization function */
e803df70	130	init_status = data->init_method_data.init_func(data->msg_iter,
078033ed	131	data->init_method_data.user_data);
21a9f056	132	if (init_status != BT_GRAPH_SIMPLE_SINK_COMPONENT_INITIALIZE_FUNC_STATUS_OK) {
078033ed PP	133	BT_LIB_LOGW_APPEND_CAUSE(
	134	"Simple sink component's user's initialization function failed: "
	135	"status=%s, %![comp-]+c, %![port-]+p",
e803df70	136	bt_common_func_status_string(init_status),
078033ed	137	self_comp, self_port);
e803df70	138	status = (int) init_status;
078033ed PP	139	goto end;
	140	}
	141	}
	142
e803df70 SM	143	status = BT_COMPONENT_CLASS_SINK_GRAPH_IS_CONFIGURED_METHOD_STATUS_OK;
e803df70 SM	144
078033ed PP	145	end:
	146	return status;
	147	}
	148
	149	static
	150	enum bt_component_class_sink_consume_method_status simple_sink_consume(
	151	struct bt_self_component_sink *self_comp)
	152	{
	153	int status;
	154	struct simple_sink_data *data = bt_self_component_get_data(
	155	bt_self_component_sink_as_self_component(self_comp));
	156
98b15851 PP	157	BT_ASSERT_DBG(data);
	158	BT_ASSERT_DBG(data->init_method_data.consume_func);
	159	BT_ASSERT_DBG(data->msg_iter);
078033ed PP	160
	161	/* Call user's "consume" function */
	162	status = data->init_method_data.consume_func(data->msg_iter,
	163	data->init_method_data.user_data);
21559c8e	164	if (status < 0) {
078033ed PP	165	BT_LIB_LOGW_APPEND_CAUSE(
	166	"Simple sink component's user's \"consume\" function failed: "
	167	"status=%s, %![comp-]+c",
	168	bt_common_func_status_string(status), self_comp);
	169	}
	170
	171	return status;
	172	}
	173
d4a975d8	174	BT_HIDDEN
078033ed PP	175	struct bt_component_class_sink *bt_component_class_sink_simple_borrow(void)
	176	{
	177	enum bt_component_class_set_method_status set_method_status;
	178
	179	if (simple_comp_cls) {
	180	goto end;
	181	}
	182
	183	simple_comp_cls = bt_component_class_sink_create("simple-sink",
	184	simple_sink_consume);
	185	if (!simple_comp_cls) {
	186	BT_LIB_LOGE_APPEND_CAUSE(
	187	"Cannot create simple sink component class.");
	188	goto end;
	189	}
	190
21a9f056	191	set_method_status = bt_component_class_sink_set_initialize_method(
078033ed PP	192	simple_comp_cls, simple_sink_init);
	193	BT_ASSERT(set_method_status == BT_FUNC_STATUS_OK);
	194	set_method_status = bt_component_class_sink_set_finalize_method(
	195	simple_comp_cls, simple_sink_finalize);
	196	BT_ASSERT(set_method_status == BT_FUNC_STATUS_OK);
	197	set_method_status = bt_component_class_sink_set_graph_is_configured_method(
	198	simple_comp_cls, simple_sink_graph_is_configured);
	199	BT_ASSERT(set_method_status == BT_FUNC_STATUS_OK);
	200
	201	end:
	202	return simple_comp_cls;
	203	}
	204
	205	__attribute__((destructor)) static
	206	void put_simple_sink_component_class(void) {
	207	BT_OBJECT_PUT_REF_AND_RESET(simple_comp_cls);
	208	}