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

/*
 * Copyright 2017 Philippe Proulx <pproulx@efficios.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#define BT_LOG_TAG "COLANDER"
#include <babeltrace/lib-logging-internal.h>

#include <babeltrace/ref.h>
#include <babeltrace/graph/connection.h>
#include <babeltrace/graph/component-class-sink.h>
#include <babeltrace/graph/private-component-sink.h>
#include <babeltrace/graph/private-port.h>
#include <babeltrace/graph/private-connection.h>
#include <babeltrace/graph/private-connection-notification-iterator.h>
#include <babeltrace/graph/private-component.h>
#include <babeltrace/graph/component-class-sink-colander-internal.h>
#include <babeltrace/assert-internal.h>
#include <glib.h>

static
struct bt_component_class *colander_comp_cls;

struct colander_data {
	bt_notification_array notifs;
	uint64_t *count_addr;
	struct bt_notification_iterator *notif_iter;
};

static
enum bt_component_status colander_init(
		struct bt_private_component *priv_comp,
		struct bt_value *params, void *init_method_data)
{
	enum bt_component_status status = BT_COMPONENT_STATUS_OK;
	struct colander_data *colander_data = NULL;
	struct bt_component_class_sink_colander_data *user_provided_data =
		init_method_data;

	if (!init_method_data) {
		BT_LOGW_STR("Component initialization method data is NULL.");
		status = BT_COMPONENT_STATUS_INVALID;
		goto end;
	}

	colander_data = g_new0(struct colander_data, 1);
	if (!colander_data) {
		BT_LOGE_STR("Failed to allocate colander data.");
		status = BT_COMPONENT_STATUS_NOMEM;
		goto end;
	}

	colander_data->notifs = user_provided_data->notifs;
	colander_data->count_addr = user_provided_data->count_addr;
	status = bt_private_component_sink_add_input_private_port(
		priv_comp, "in", NULL, NULL);
	if (status != BT_COMPONENT_STATUS_OK) {
		BT_LOGE_STR("Cannot add input port.");
		goto end;
	}

	(void) bt_private_component_set_user_data(priv_comp, colander_data);

end:
	return status;
}

static
void colander_finalize(struct bt_private_component *priv_comp)
{
	struct colander_data *colander_data =
		bt_private_component_get_user_data(priv_comp);

	if (!colander_data) {
		return;
	}

	if (colander_data->notif_iter) {
		bt_put(colander_data->notif_iter);
	}

	g_free(colander_data);
}

static
void colander_port_connected(struct bt_private_component *priv_comp,
		struct bt_private_port *self_priv_port,
		struct bt_port *other_port)
{
	enum bt_connection_status conn_status;
	struct bt_private_connection *priv_conn =
		bt_private_port_get_private_connection(self_priv_port);
	struct colander_data *colander_data =
		bt_private_component_get_user_data(priv_comp);

	BT_ASSERT(priv_conn);
	BT_ASSERT(colander_data);
	BT_PUT(colander_data->notif_iter);
	conn_status = bt_private_connection_create_notification_iterator(
		priv_conn, &colander_data->notif_iter);
	if (conn_status) {
		BT_LOGE("Cannot create notification iterator from connection: "
			"comp-addr=%p, conn-addr=%p", priv_comp, priv_conn);
		goto end;
	}

end:
	bt_put(priv_conn);
}

static
enum bt_component_status colander_consume(
		struct bt_private_component *priv_comp)
{
	enum bt_component_status status = BT_COMPONENT_STATUS_OK;
	enum bt_notification_iterator_status notif_iter_status;
	struct colander_data *colander_data =
		bt_private_component_get_user_data(priv_comp);
	bt_notification_array notifs;

	BT_ASSERT(colander_data);

	if (!colander_data->notif_iter) {
		BT_LOGW("Trying to consume without an upstream notification iterator: "
			"comp-addr=%p", priv_comp);
		goto end;
	}

	notif_iter_status = bt_private_connection_notification_iterator_next(
		colander_data->notif_iter, &notifs, colander_data->count_addr);
	switch (notif_iter_status) {
	case BT_NOTIFICATION_ITERATOR_STATUS_CANCELED:
		status = BT_COMPONENT_STATUS_OK;
		goto end;
	case BT_NOTIFICATION_ITERATOR_STATUS_AGAIN:
		status = BT_COMPONENT_STATUS_AGAIN;
		goto end;
	case BT_NOTIFICATION_ITERATOR_STATUS_END:
		status = BT_COMPONENT_STATUS_END;
		goto end;
	case BT_NOTIFICATION_ITERATOR_STATUS_OK:
		/* Move notifications to user (count already set) */
		memcpy(colander_data->notifs, notifs,
			sizeof(*notifs) * *colander_data->count_addr);
		break;
	default:
		status = BT_COMPONENT_STATUS_ERROR;
		goto end;
	}

end:
	/* Move notification to user's pointer, even if NULL. */
	return status;
}

struct bt_component_class *bt_component_class_sink_colander_get(void)
{
	if (colander_comp_cls) {
		goto end;
	}

	colander_comp_cls = bt_component_class_sink_create("colander",
		colander_consume);
	if (!colander_comp_cls) {
		BT_LOGE_STR("Cannot create sink colander component class.");
		goto end;
	}

	(void) bt_component_class_set_init_method(colander_comp_cls,
		colander_init);
	(void) bt_component_class_set_finalize_method(colander_comp_cls,
		colander_finalize);
	(void) bt_component_class_set_port_connected_method(colander_comp_cls,
		colander_port_connected);
	(void) bt_component_class_freeze(colander_comp_cls);

end:
	return bt_get(colander_comp_cls);
}

__attribute__((destructor)) static
void put_colander(void) {
	BT_PUT(colander_comp_cls);
}
Commit	Line	Data
706a18f9 PP	1	/*
	2	* Copyright 2017 Philippe Proulx <pproulx@efficios.com>
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a copy
	5	* of this software and associated documentation files (the "Software"), to deal
	6	* in the Software without restriction, including without limitation the rights
	7	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	8	* copies of the Software, and to permit persons to whom the Software is
	9	* furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice shall be included in
	12	* all copies or substantial portions of the Software.
	13	*
	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
	17	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	18	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	19	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	20	* SOFTWARE.
	21	*/
	22
	23	#define BT_LOG_TAG "COLANDER"
	24	#include <babeltrace/lib-logging-internal.h>
	25
9d408fca PP	26	#include <babeltrace/ref.h>
9d408fca PP	27	#include <babeltrace/graph/connection.h>
706a18f9 PP	28	#include <babeltrace/graph/component-class-sink.h>
	29	#include <babeltrace/graph/private-component-sink.h>
	30	#include <babeltrace/graph/private-port.h>
	31	#include <babeltrace/graph/private-connection.h>
07245ac2	32	#include <babeltrace/graph/private-connection-notification-iterator.h>
9d408fca	33	#include <babeltrace/graph/private-component.h>
8ed535b5	34	#include <babeltrace/graph/component-class-sink-colander-internal.h>
f6ccaed9	35	#include <babeltrace/assert-internal.h>
706a18f9	36	#include <glib.h>
706a18f9 PP	37
	38	static
	39	struct bt_component_class *colander_comp_cls;
	40
	41	struct colander_data {
d4393e08 PP	42	bt_notification_array notifs;
d4393e08 PP	43	uint64_t *count_addr;
706a18f9 PP	44	struct bt_notification_iterator *notif_iter;
	45	};
	46
	47	static
	48	enum bt_component_status colander_init(
	49	struct bt_private_component *priv_comp,
	50	struct bt_value params, void init_method_data)
	51	{
	52	enum bt_component_status status = BT_COMPONENT_STATUS_OK;
	53	struct colander_data *colander_data = NULL;
8ed535b5 PP	54	struct bt_component_class_sink_colander_data *user_provided_data =
8ed535b5 PP	55	init_method_data;
706a18f9 PP	56
	57	if (!init_method_data) {
	58	BT_LOGW_STR("Component initialization method data is NULL.");
	59	status = BT_COMPONENT_STATUS_INVALID;
	60	goto end;
	61	}
	62
	63	colander_data = g_new0(struct colander_data, 1);
	64	if (!colander_data) {
	65	BT_LOGE_STR("Failed to allocate colander data.");
	66	status = BT_COMPONENT_STATUS_NOMEM;
	67	goto end;
	68	}
	69
d4393e08 PP	70	colander_data->notifs = user_provided_data->notifs;
d4393e08 PP	71	colander_data->count_addr = user_provided_data->count_addr;
706a18f9 PP	72	status = bt_private_component_sink_add_input_private_port(
	73	priv_comp, "in", NULL, NULL);
	74	if (status != BT_COMPONENT_STATUS_OK) {
	75	BT_LOGE_STR("Cannot add input port.");
	76	goto end;
	77	}
	78
	79	(void) bt_private_component_set_user_data(priv_comp, colander_data);
	80
	81	end:
	82	return status;
	83	}
	84
	85	static
	86	void colander_finalize(struct bt_private_component *priv_comp)
	87	{
	88	struct colander_data *colander_data =
	89	bt_private_component_get_user_data(priv_comp);
	90
	91	if (!colander_data) {
	92	return;
	93	}
	94
	95	if (colander_data->notif_iter) {
	96	bt_put(colander_data->notif_iter);
	97	}
	98
	99	g_free(colander_data);
	100	}
	101
	102	static
	103	void colander_port_connected(struct bt_private_component *priv_comp,
	104	struct bt_private_port *self_priv_port,
	105	struct bt_port *other_port)
	106	{
	107	enum bt_connection_status conn_status;
	108	struct bt_private_connection *priv_conn =
	109	bt_private_port_get_private_connection(self_priv_port);
	110	struct colander_data *colander_data =
	111	bt_private_component_get_user_data(priv_comp);
	112
f6ccaed9 PP	113	BT_ASSERT(priv_conn);
f6ccaed9 PP	114	BT_ASSERT(colander_data);
706a18f9 PP	115	BT_PUT(colander_data->notif_iter);
706a18f9 PP	116	conn_status = bt_private_connection_create_notification_iterator(
f42867e2	117	priv_conn, &colander_data->notif_iter);
706a18f9 PP	118	if (conn_status) {
	119	BT_LOGE("Cannot create notification iterator from connection: "
	120	"comp-addr=%p, conn-addr=%p", priv_comp, priv_conn);
	121	goto end;
	122	}
	123
	124	end:
	125	bt_put(priv_conn);
	126	}
	127
	128	static
	129	enum bt_component_status colander_consume(
	130	struct bt_private_component *priv_comp)
	131	{
	132	enum bt_component_status status = BT_COMPONENT_STATUS_OK;
	133	enum bt_notification_iterator_status notif_iter_status;
706a18f9 PP	134	struct colander_data *colander_data =
706a18f9 PP	135	bt_private_component_get_user_data(priv_comp);
d4393e08	136	bt_notification_array notifs;
706a18f9	137
f6ccaed9	138	BT_ASSERT(colander_data);
706a18f9 PP	139
	140	if (!colander_data->notif_iter) {
	141	BT_LOGW("Trying to consume without an upstream notification iterator: "
	142	"comp-addr=%p", priv_comp);
	143	goto end;
	144	}
	145
07245ac2	146	notif_iter_status = bt_private_connection_notification_iterator_next(
d4393e08	147	colander_data->notif_iter, &notifs, colander_data->count_addr);
706a18f9 PP	148	switch (notif_iter_status) {
	149	case BT_NOTIFICATION_ITERATOR_STATUS_CANCELED:
	150	status = BT_COMPONENT_STATUS_OK;
	151	goto end;
	152	case BT_NOTIFICATION_ITERATOR_STATUS_AGAIN:
	153	status = BT_COMPONENT_STATUS_AGAIN;
	154	goto end;
	155	case BT_NOTIFICATION_ITERATOR_STATUS_END:
	156	status = BT_COMPONENT_STATUS_END;
	157	goto end;
	158	case BT_NOTIFICATION_ITERATOR_STATUS_OK:
d4393e08 PP	159	/* Move notifications to user (count already set) */
	160	memcpy(colander_data->notifs, notifs,
	161	sizeof(notifs) *colander_data->count_addr);
706a18f9 PP	162	break;
	163	default:
	164	status = BT_COMPONENT_STATUS_ERROR;
	165	goto end;
	166	}
	167
706a18f9 PP	168	end:
706a18f9 PP	169	/* Move notification to user's pointer, even if NULL. */
706a18f9 PP	170	return status;
	171	}
	172
	173	struct bt_component_class *bt_component_class_sink_colander_get(void)
	174	{
	175	if (colander_comp_cls) {
	176	goto end;
	177	}
	178
	179	colander_comp_cls = bt_component_class_sink_create("colander",
	180	colander_consume);
	181	if (!colander_comp_cls) {
	182	BT_LOGE_STR("Cannot create sink colander component class.");
	183	goto end;
	184	}
	185
	186	(void) bt_component_class_set_init_method(colander_comp_cls,
	187	colander_init);
	188	(void) bt_component_class_set_finalize_method(colander_comp_cls,
	189	colander_finalize);
	190	(void) bt_component_class_set_port_connected_method(colander_comp_cls,
	191	colander_port_connected);
	192	(void) bt_component_class_freeze(colander_comp_cls);
	193
	194	end:
	195	return bt_get(colander_comp_cls);
	196	}
	197
	198	__attribute__((destructor)) static
	199	void put_colander(void) {
	200	BT_PUT(colander_comp_cls);
	201	}