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

/*
 * Copyright 2017-2018 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/assert-internal.h>
#include <babeltrace/assert-pre-internal.h>
#include <babeltrace/object-internal.h>
#include <babeltrace/graph/component-class-sink.h>
#include <babeltrace/graph/self-component-sink.h>
#include <babeltrace/graph/self-component-port.h>
#include <babeltrace/graph/self-component-port-input-message-iterator.h>
#include <babeltrace/graph/self-component.h>
#include <babeltrace/graph/component-class-sink-colander-internal.h>
#include <glib.h>

static
struct bt_component_class_sink *colander_comp_cls;

static
enum bt_self_component_status colander_init(
		struct bt_self_component_sink *self_comp,
		const struct bt_value *params, void *init_method_data)
{
	enum bt_self_component_status status = BT_SELF_COMPONENT_STATUS_OK;
	struct bt_component_class_sink_colander_priv_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_SELF_COMPONENT_STATUS_ERROR;
		goto end;
	}

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

	colander_data->msgs = user_provided_data->msgs;
	colander_data->count_addr = user_provided_data->count_addr;
	status = bt_self_component_sink_add_input_port(self_comp, "in",
		NULL, NULL);
	if (status != BT_SELF_COMPONENT_STATUS_OK) {
		BT_LOGE_STR("Cannot add input port.");
		goto end;
	}

	bt_self_component_set_data(
		bt_self_component_sink_as_self_component(self_comp),
		colander_data);

end:
	return status;
}

static
void colander_finalize(struct bt_self_component_sink *self_comp)
{
	struct bt_component_class_sink_colander_priv_data *colander_data =
		bt_self_component_get_data(
			bt_self_component_sink_as_self_component(self_comp));

	if (!colander_data) {
		return;
	}

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

static
enum bt_self_component_status colander_input_port_connected(
		struct bt_self_component_sink *self_comp,
		struct bt_self_component_port_input *self_port,
		const struct bt_port_output *other_port)
{
	enum bt_self_component_status status = BT_SELF_COMPONENT_STATUS_OK;
	struct bt_component_class_sink_colander_priv_data *colander_data =
		bt_self_component_get_data(
			bt_self_component_sink_as_self_component(self_comp));

	BT_ASSERT(colander_data);
	BT_OBJECT_PUT_REF_AND_RESET(colander_data->msg_iter);
	colander_data->msg_iter =
		bt_self_component_port_input_message_iterator_create(
			self_port);
	if (!colander_data->msg_iter) {
		BT_LIB_LOGE("Cannot create message iterator on "
			"self component input port: %![port-]+p",
			self_port);
		status = BT_SELF_COMPONENT_STATUS_NOMEM;
		goto end;
	}

end:
	return status;
}

static
enum bt_self_component_status colander_consume(
		struct bt_self_component_sink *self_comp)
{
	enum bt_self_component_status status = BT_SELF_COMPONENT_STATUS_OK;
	enum bt_message_iterator_status msg_iter_status;
	struct bt_component_class_sink_colander_priv_data *colander_data =
		bt_self_component_get_data(
			bt_self_component_sink_as_self_component(self_comp));
	bt_message_array_const msgs;

	BT_ASSERT(colander_data);

	if (!colander_data->msg_iter) {
		BT_LIB_LOGW("Trying to consume without an "
			"upstream message iterator: %![comp-]+c",
			self_comp);
		goto end;
	}

	msg_iter_status =
		bt_self_component_port_input_message_iterator_next(
			colander_data->msg_iter, &msgs,
			colander_data->count_addr);
	switch (msg_iter_status) {
	case BT_MESSAGE_ITERATOR_STATUS_AGAIN:
		status = BT_SELF_COMPONENT_STATUS_AGAIN;
		goto end;
	case BT_MESSAGE_ITERATOR_STATUS_END:
		status = BT_SELF_COMPONENT_STATUS_END;
		goto end;
	case BT_MESSAGE_ITERATOR_STATUS_OK:
		/* Move messages to user (count already set) */
		memcpy(colander_data->msgs, msgs,
			sizeof(*msgs) * *colander_data->count_addr);
		break;
	default:
		status = BT_SELF_COMPONENT_STATUS_ERROR;
		goto end;
	}

end:
	return status;
}

struct bt_component_class_sink *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_sink_set_init_method(
		colander_comp_cls, colander_init);
	(void) bt_component_class_sink_set_finalize_method(
		colander_comp_cls, colander_finalize);
	(void) bt_component_class_sink_set_input_port_connected_method(
		colander_comp_cls, colander_input_port_connected);

end:
	bt_object_get_ref(colander_comp_cls);
	return (void *) colander_comp_cls;
}

__attribute__((destructor)) static
void put_colander(void) {
	BT_OBJECT_PUT_REF_AND_RESET(colander_comp_cls);
}
Commit	Line	Data
706a18f9	1	/*
e2f7325d	2	* Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
706a18f9 PP	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
c5b9b441 PP	26	#include <babeltrace/assert-internal.h>
	27	#include <babeltrace/assert-pre-internal.h>
	28	#include <babeltrace/object-internal.h>
0d72b8c3	29	#include <babeltrace/graph/component-class-sink.h>
d94d92ac PP	30	#include <babeltrace/graph/self-component-sink.h>
d94d92ac PP	31	#include <babeltrace/graph/self-component-port.h>
d6e69534	32	#include <babeltrace/graph/self-component-port-input-message-iterator.h>
d94d92ac	33	#include <babeltrace/graph/self-component.h>
8ed535b5	34	#include <babeltrace/graph/component-class-sink-colander-internal.h>
706a18f9	35	#include <glib.h>
706a18f9 PP	36
706a18f9 PP	37	static
0d72b8c3	38	struct bt_component_class_sink *colander_comp_cls;
706a18f9	39
706a18f9	40	static
d94d92ac PP	41	enum bt_self_component_status colander_init(
d94d92ac PP	42	struct bt_self_component_sink *self_comp,
05e21286	43	const struct bt_value params, void init_method_data)
706a18f9	44	{
d94d92ac	45	enum bt_self_component_status status = BT_SELF_COMPONENT_STATUS_OK;
7474e7d3	46	struct bt_component_class_sink_colander_priv_data *colander_data = NULL;
8ed535b5 PP	47	struct bt_component_class_sink_colander_data *user_provided_data =
8ed535b5 PP	48	init_method_data;
706a18f9 PP	49
	50	if (!init_method_data) {
	51	BT_LOGW_STR("Component initialization method data is NULL.");
d94d92ac	52	status = BT_SELF_COMPONENT_STATUS_ERROR;
706a18f9 PP	53	goto end;
	54	}
	55
7474e7d3 PP	56	colander_data = g_new0(
7474e7d3 PP	57	struct bt_component_class_sink_colander_priv_data, 1);
706a18f9 PP	58	if (!colander_data) {
706a18f9 PP	59	BT_LOGE_STR("Failed to allocate colander data.");
d94d92ac	60	status = BT_SELF_COMPONENT_STATUS_NOMEM;
706a18f9 PP	61	goto end;
	62	}
	63
d6e69534	64	colander_data->msgs = user_provided_data->msgs;
d4393e08	65	colander_data->count_addr = user_provided_data->count_addr;
d94d92ac PP	66	status = bt_self_component_sink_add_input_port(self_comp, "in",
	67	NULL, NULL);
	68	if (status != BT_SELF_COMPONENT_STATUS_OK) {
706a18f9 PP	69	BT_LOGE_STR("Cannot add input port.");
	70	goto end;
	71	}
	72
d94d92ac	73	bt_self_component_set_data(
707b7d35	74	bt_self_component_sink_as_self_component(self_comp),
d94d92ac	75	colander_data);
706a18f9 PP	76
	77	end:
	78	return status;
	79	}
	80
	81	static
d94d92ac	82	void colander_finalize(struct bt_self_component_sink *self_comp)
706a18f9	83	{
7474e7d3	84	struct bt_component_class_sink_colander_priv_data *colander_data =
d94d92ac	85	bt_self_component_get_data(
707b7d35	86	bt_self_component_sink_as_self_component(self_comp));
706a18f9 PP	87
	88	if (!colander_data) {
	89	return;
	90	}
	91
d6e69534	92	BT_OBJECT_PUT_REF_AND_RESET(colander_data->msg_iter);
706a18f9 PP	93	g_free(colander_data);
	94	}
	95
	96	static
d94d92ac PP	97	enum bt_self_component_status colander_input_port_connected(
	98	struct bt_self_component_sink *self_comp,
	99	struct bt_self_component_port_input *self_port,
0d72b8c3	100	const struct bt_port_output *other_port)
706a18f9	101	{
d94d92ac	102	enum bt_self_component_status status = BT_SELF_COMPONENT_STATUS_OK;
7474e7d3	103	struct bt_component_class_sink_colander_priv_data *colander_data =
d94d92ac	104	bt_self_component_get_data(
707b7d35	105	bt_self_component_sink_as_self_component(self_comp));
706a18f9	106
f6ccaed9	107	BT_ASSERT(colander_data);
d6e69534 PP	108	BT_OBJECT_PUT_REF_AND_RESET(colander_data->msg_iter);
	109	colander_data->msg_iter =
	110	bt_self_component_port_input_message_iterator_create(
d94d92ac	111	self_port);
d6e69534 PP	112	if (!colander_data->msg_iter) {
d6e69534 PP	113	BT_LIB_LOGE("Cannot create message iterator on "
d94d92ac PP	114	"self component input port: %![port-]+p",
	115	self_port);
	116	status = BT_SELF_COMPONENT_STATUS_NOMEM;
706a18f9 PP	117	goto end;
	118	}
	119
	120	end:
bf55043c	121	return status;
706a18f9 PP	122	}
	123
	124	static
d94d92ac PP	125	enum bt_self_component_status colander_consume(
d94d92ac PP	126	struct bt_self_component_sink *self_comp)
706a18f9	127	{
d94d92ac	128	enum bt_self_component_status status = BT_SELF_COMPONENT_STATUS_OK;
d6e69534	129	enum bt_message_iterator_status msg_iter_status;
7474e7d3	130	struct bt_component_class_sink_colander_priv_data *colander_data =
d94d92ac	131	bt_self_component_get_data(
707b7d35	132	bt_self_component_sink_as_self_component(self_comp));
d6e69534	133	bt_message_array_const msgs;
706a18f9	134
f6ccaed9	135	BT_ASSERT(colander_data);
706a18f9	136
d6e69534	137	if (!colander_data->msg_iter) {
d94d92ac	138	BT_LIB_LOGW("Trying to consume without an "
d6e69534	139	"upstream message iterator: %![comp-]+c",
d94d92ac	140	self_comp);
706a18f9 PP	141	goto end;
	142	}
	143
d6e69534 PP	144	msg_iter_status =
	145	bt_self_component_port_input_message_iterator_next(
	146	colander_data->msg_iter, &msgs,
d94d92ac	147	colander_data->count_addr);
d6e69534	148	switch (msg_iter_status) {
d6e69534	149	case BT_MESSAGE_ITERATOR_STATUS_AGAIN:
d94d92ac	150	status = BT_SELF_COMPONENT_STATUS_AGAIN;
706a18f9	151	goto end;
d6e69534	152	case BT_MESSAGE_ITERATOR_STATUS_END:
d94d92ac	153	status = BT_SELF_COMPONENT_STATUS_END;
706a18f9	154	goto end;
d6e69534 PP	155	case BT_MESSAGE_ITERATOR_STATUS_OK:
	156	/* Move messages to user (count already set) */
	157	memcpy(colander_data->msgs, msgs,
	158	sizeof(msgs) *colander_data->count_addr);
706a18f9 PP	159	break;
706a18f9 PP	160	default:
d94d92ac	161	status = BT_SELF_COMPONENT_STATUS_ERROR;
706a18f9 PP	162	goto end;
	163	}
	164
706a18f9	165	end:
706a18f9 PP	166	return status;
	167	}
	168
d94d92ac	169	struct bt_component_class_sink *bt_component_class_sink_colander_get(void)
706a18f9 PP	170	{
	171	if (colander_comp_cls) {
	172	goto end;
	173	}
	174
0d72b8c3 PP	175	colander_comp_cls = bt_component_class_sink_create("colander",
0d72b8c3 PP	176	colander_consume);
706a18f9 PP	177	if (!colander_comp_cls) {
	178	BT_LOGE_STR("Cannot create sink colander component class.");
	179	goto end;
	180	}
	181
0d72b8c3	182	(void) bt_component_class_sink_set_init_method(
d94d92ac	183	colander_comp_cls, colander_init);
0d72b8c3	184	(void) bt_component_class_sink_set_finalize_method(
d94d92ac	185	colander_comp_cls, colander_finalize);
0d72b8c3	186	(void) bt_component_class_sink_set_input_port_connected_method(
d94d92ac	187	colander_comp_cls, colander_input_port_connected);
706a18f9 PP	188
706a18f9 PP	189	end:
398454ed PP	190	bt_object_get_ref(colander_comp_cls);
398454ed PP	191	return (void *) colander_comp_cls;
706a18f9 PP	192	}
	193
	194	__attribute__((destructor)) static
	195	void put_colander(void) {
65300d60	196	BT_OBJECT_PUT_REF_AND_RESET(colander_comp_cls);
706a18f9	197	}