[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;

struct colander_data {
	bt_message_array_const msgs;
	uint64_t *count_addr;
	struct bt_self_component_port_input_message_iterator *msg_iter;
};

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 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_SELF_COMPONENT_STATUS_ERROR;
		goto end;
	}

	colander_data = g_new0(struct colander_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 colander_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 colander_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 colander_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_CANCELED:
		status = BT_SELF_COMPONENT_STATUS_OK;
		goto end;
	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
361ac4a6	1	/*
f2b0325d	2	* Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
361ac4a6 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
8c6884d9 PP	26	#include <babeltrace/assert-internal.h>
	27	#include <babeltrace/assert-pre-internal.h>
	28	#include <babeltrace/object-internal.h>
7b53201c	29	#include <babeltrace/graph/component-class-sink.h>
834e9996 PP	30	#include <babeltrace/graph/self-component-sink.h>
834e9996 PP	31	#include <babeltrace/graph/self-component-port.h>
b09a5592	32	#include <babeltrace/graph/self-component-port-input-message-iterator.h>
834e9996	33	#include <babeltrace/graph/self-component.h>
c3ac0193	34	#include <babeltrace/graph/component-class-sink-colander-internal.h>
361ac4a6	35	#include <glib.h>
361ac4a6 PP	36
361ac4a6 PP	37	static
7b53201c	38	struct bt_component_class_sink *colander_comp_cls;
361ac4a6 PP	39
361ac4a6 PP	40	struct colander_data {
b09a5592	41	bt_message_array_const msgs;
3fd7b79d	42	uint64_t *count_addr;
b09a5592	43	struct bt_self_component_port_input_message_iterator *msg_iter;
361ac4a6 PP	44	};
	45
	46	static
834e9996 PP	47	enum bt_self_component_status colander_init(
834e9996 PP	48	struct bt_self_component_sink *self_comp,
ce141536	49	const struct bt_value params, void init_method_data)
361ac4a6	50	{
834e9996	51	enum bt_self_component_status status = BT_SELF_COMPONENT_STATUS_OK;
361ac4a6	52	struct colander_data *colander_data = NULL;
c3ac0193 PP	53	struct bt_component_class_sink_colander_data *user_provided_data =
c3ac0193 PP	54	init_method_data;
361ac4a6 PP	55
	56	if (!init_method_data) {
	57	BT_LOGW_STR("Component initialization method data is NULL.");
834e9996	58	status = BT_SELF_COMPONENT_STATUS_ERROR;
361ac4a6 PP	59	goto end;
	60	}
	61
	62	colander_data = g_new0(struct colander_data, 1);
	63	if (!colander_data) {
	64	BT_LOGE_STR("Failed to allocate colander data.");
834e9996	65	status = BT_SELF_COMPONENT_STATUS_NOMEM;
361ac4a6 PP	66	goto end;
	67	}
	68
b09a5592	69	colander_data->msgs = user_provided_data->msgs;
3fd7b79d	70	colander_data->count_addr = user_provided_data->count_addr;
834e9996 PP	71	status = bt_self_component_sink_add_input_port(self_comp, "in",
	72	NULL, NULL);
	73	if (status != BT_SELF_COMPONENT_STATUS_OK) {
361ac4a6 PP	74	BT_LOGE_STR("Cannot add input port.");
	75	goto end;
	76	}
	77
834e9996	78	bt_self_component_set_data(
bb61965b	79	bt_self_component_sink_as_self_component(self_comp),
834e9996	80	colander_data);
361ac4a6 PP	81
	82	end:
	83	return status;
	84	}
	85
	86	static
834e9996	87	void colander_finalize(struct bt_self_component_sink *self_comp)
361ac4a6 PP	88	{
361ac4a6 PP	89	struct colander_data *colander_data =
834e9996	90	bt_self_component_get_data(
bb61965b	91	bt_self_component_sink_as_self_component(self_comp));
361ac4a6 PP	92
	93	if (!colander_data) {
	94	return;
	95	}
	96
b09a5592	97	BT_OBJECT_PUT_REF_AND_RESET(colander_data->msg_iter);
361ac4a6 PP	98	g_free(colander_data);
	99	}
	100
	101	static
834e9996 PP	102	enum bt_self_component_status colander_input_port_connected(
	103	struct bt_self_component_sink *self_comp,
	104	struct bt_self_component_port_input *self_port,
7b53201c	105	const struct bt_port_output *other_port)
361ac4a6	106	{
834e9996	107	enum bt_self_component_status status = BT_SELF_COMPONENT_STATUS_OK;
361ac4a6	108	struct colander_data *colander_data =
834e9996	109	bt_self_component_get_data(
bb61965b	110	bt_self_component_sink_as_self_component(self_comp));
361ac4a6	111
8b45963b	112	BT_ASSERT(colander_data);
b09a5592 PP	113	BT_OBJECT_PUT_REF_AND_RESET(colander_data->msg_iter);
	114	colander_data->msg_iter =
	115	bt_self_component_port_input_message_iterator_create(
834e9996	116	self_port);
b09a5592 PP	117	if (!colander_data->msg_iter) {
b09a5592 PP	118	BT_LIB_LOGE("Cannot create message iterator on "
834e9996 PP	119	"self component input port: %![port-]+p",
	120	self_port);
	121	status = BT_SELF_COMPONENT_STATUS_NOMEM;
361ac4a6 PP	122	goto end;
	123	}
	124
	125	end:
634f394c	126	return status;
361ac4a6 PP	127	}
	128
	129	static
834e9996 PP	130	enum bt_self_component_status colander_consume(
834e9996 PP	131	struct bt_self_component_sink *self_comp)
361ac4a6	132	{
834e9996	133	enum bt_self_component_status status = BT_SELF_COMPONENT_STATUS_OK;
b09a5592	134	enum bt_message_iterator_status msg_iter_status;
361ac4a6	135	struct colander_data *colander_data =
834e9996	136	bt_self_component_get_data(
bb61965b	137	bt_self_component_sink_as_self_component(self_comp));
b09a5592	138	bt_message_array_const msgs;
361ac4a6	139
8b45963b	140	BT_ASSERT(colander_data);
361ac4a6	141
b09a5592	142	if (!colander_data->msg_iter) {
834e9996	143	BT_LIB_LOGW("Trying to consume without an "
b09a5592	144	"upstream message iterator: %![comp-]+c",
834e9996	145	self_comp);
361ac4a6 PP	146	goto end;
	147	}
	148
b09a5592 PP	149	msg_iter_status =
	150	bt_self_component_port_input_message_iterator_next(
	151	colander_data->msg_iter, &msgs,
834e9996	152	colander_data->count_addr);
b09a5592 PP	153	switch (msg_iter_status) {
b09a5592 PP	154	case BT_MESSAGE_ITERATOR_STATUS_CANCELED:
834e9996	155	status = BT_SELF_COMPONENT_STATUS_OK;
361ac4a6	156	goto end;
b09a5592	157	case BT_MESSAGE_ITERATOR_STATUS_AGAIN:
834e9996	158	status = BT_SELF_COMPONENT_STATUS_AGAIN;
361ac4a6	159	goto end;
b09a5592	160	case BT_MESSAGE_ITERATOR_STATUS_END:
834e9996	161	status = BT_SELF_COMPONENT_STATUS_END;
361ac4a6	162	goto end;
b09a5592 PP	163	case BT_MESSAGE_ITERATOR_STATUS_OK:
	164	/* Move messages to user (count already set) */
	165	memcpy(colander_data->msgs, msgs,
	166	sizeof(msgs) *colander_data->count_addr);
361ac4a6 PP	167	break;
361ac4a6 PP	168	default:
834e9996	169	status = BT_SELF_COMPONENT_STATUS_ERROR;
361ac4a6 PP	170	goto end;
	171	}
	172
361ac4a6	173	end:
361ac4a6 PP	174	return status;
	175	}
	176
834e9996	177	struct bt_component_class_sink *bt_component_class_sink_colander_get(void)
361ac4a6 PP	178	{
	179	if (colander_comp_cls) {
	180	goto end;
	181	}
	182
7b53201c PP	183	colander_comp_cls = bt_component_class_sink_create("colander",
7b53201c PP	184	colander_consume);
361ac4a6 PP	185	if (!colander_comp_cls) {
	186	BT_LOGE_STR("Cannot create sink colander component class.");
	187	goto end;
	188	}
	189
7b53201c	190	(void) bt_component_class_sink_set_init_method(
834e9996	191	colander_comp_cls, colander_init);
7b53201c	192	(void) bt_component_class_sink_set_finalize_method(
834e9996	193	colander_comp_cls, colander_finalize);
7b53201c	194	(void) bt_component_class_sink_set_input_port_connected_method(
834e9996	195	colander_comp_cls, colander_input_port_connected);
361ac4a6 PP	196
361ac4a6 PP	197	end:
4b70020d PP	198	bt_object_get_ref(colander_comp_cls);
4b70020d PP	199	return (void *) colander_comp_cls;
361ac4a6 PP	200	}
	201
	202	__attribute__((destructor)) static
	203	void put_colander(void) {
8138bfe1	204	BT_OBJECT_PUT_REF_AND_RESET(colander_comp_cls);
361ac4a6	205	}