c20ff5ec7a6450984b948232493a42320ecbd344
[babeltrace.git] / src / lib / graph / component-class-sink-colander.c
1 /*
2 * Copyright 2017-2018 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 "LIB/COLANDER"
24 #include "lib/lib-logging.h"
25
26 #include "common/assert.h"
27 #include "lib/assert-pre.h"
28 #include "lib/object.h"
29 #include <babeltrace2/graph/component-class-sink.h>
30 #include <babeltrace2/graph/self-component-sink.h>
31 #include <babeltrace2/graph/self-component-port.h>
32 #include <babeltrace2/graph/self-component-port-input-message-iterator.h>
33 #include <babeltrace2/graph/self-component.h>
34 #include <glib.h>
35
36 #include "component-class-sink-colander.h"
37
38 static
39 struct bt_component_class_sink *colander_comp_cls;
40
41 static
42 enum bt_self_component_status colander_init(
43 struct bt_self_component_sink *self_comp,
44 const struct bt_value *params, void *init_method_data)
45 {
46 enum bt_self_component_status status = BT_SELF_COMPONENT_STATUS_OK;
47 struct bt_component_class_sink_colander_priv_data *colander_data = NULL;
48 struct bt_component_class_sink_colander_data *user_provided_data =
49 init_method_data;
50
51 BT_ASSERT(init_method_data);
52 colander_data = g_new0(
53 struct bt_component_class_sink_colander_priv_data, 1);
54 if (!colander_data) {
55 BT_LOGE_STR("Failed to allocate colander data.");
56 status = BT_SELF_COMPONENT_STATUS_NOMEM;
57 goto end;
58 }
59
60 colander_data->msgs = user_provided_data->msgs;
61 colander_data->count_addr = user_provided_data->count_addr;
62 status = bt_self_component_sink_add_input_port(self_comp, "in",
63 NULL, NULL);
64 if (status != BT_SELF_COMPONENT_STATUS_OK) {
65 BT_LOGE_STR("Cannot add input port.");
66 goto end;
67 }
68
69 bt_self_component_set_data(
70 bt_self_component_sink_as_self_component(self_comp),
71 colander_data);
72
73 end:
74 return status;
75 }
76
77 static
78 void colander_finalize(struct bt_self_component_sink *self_comp)
79 {
80 struct bt_component_class_sink_colander_priv_data *colander_data =
81 bt_self_component_get_data(
82 bt_self_component_sink_as_self_component(self_comp));
83
84 if (!colander_data) {
85 return;
86 }
87
88 BT_OBJECT_PUT_REF_AND_RESET(colander_data->msg_iter);
89 g_free(colander_data);
90 }
91
92 static
93 enum bt_self_component_status colander_graph_is_configured(
94 bt_self_component_sink *self_comp)
95 {
96 enum bt_self_component_status status = BT_SELF_COMPONENT_STATUS_OK;
97 struct bt_component_class_sink_colander_priv_data *colander_data =
98 bt_self_component_get_data(
99 bt_self_component_sink_as_self_component(self_comp));
100
101 struct bt_self_component_port_input *self_port =
102 bt_self_component_sink_borrow_input_port_by_name(self_comp, "in");
103 BT_ASSERT(self_port);
104
105 BT_ASSERT(colander_data);
106 BT_OBJECT_PUT_REF_AND_RESET(colander_data->msg_iter);
107 colander_data->msg_iter =
108 bt_self_component_port_input_message_iterator_create(
109 self_port);
110 if (!colander_data->msg_iter) {
111 BT_LIB_LOGE("Cannot create message iterator on "
112 "self component input port: %![port-]+p",
113 self_port);
114 status = BT_SELF_COMPONENT_STATUS_NOMEM;
115 goto end;
116 }
117
118 end:
119 return status;
120 }
121
122 static
123 enum bt_self_component_status colander_consume(
124 struct bt_self_component_sink *self_comp)
125 {
126 enum bt_self_component_status status = BT_SELF_COMPONENT_STATUS_OK;
127 enum bt_message_iterator_status msg_iter_status;
128 struct bt_component_class_sink_colander_priv_data *colander_data =
129 bt_self_component_get_data(
130 bt_self_component_sink_as_self_component(self_comp));
131 bt_message_array_const msgs;
132
133 BT_ASSERT(colander_data);
134 BT_ASSERT(colander_data->msg_iter);
135 msg_iter_status =
136 bt_self_component_port_input_message_iterator_next(
137 colander_data->msg_iter, &msgs,
138 colander_data->count_addr);
139 switch (msg_iter_status) {
140 case BT_MESSAGE_ITERATOR_STATUS_AGAIN:
141 status = BT_SELF_COMPONENT_STATUS_AGAIN;
142 goto end;
143 case BT_MESSAGE_ITERATOR_STATUS_END:
144 status = BT_SELF_COMPONENT_STATUS_END;
145 goto end;
146 case BT_MESSAGE_ITERATOR_STATUS_OK:
147 /* Move messages to user (count already set) */
148 memcpy(colander_data->msgs, msgs,
149 sizeof(*msgs) * *colander_data->count_addr);
150 break;
151 default:
152 status = BT_SELF_COMPONENT_STATUS_ERROR;
153 goto end;
154 }
155
156 end:
157 return status;
158 }
159
160 struct bt_component_class_sink *bt_component_class_sink_colander_get(void)
161 {
162 if (colander_comp_cls) {
163 goto end;
164 }
165
166 colander_comp_cls = bt_component_class_sink_create("colander",
167 colander_consume);
168 if (!colander_comp_cls) {
169 BT_LOGE_STR("Cannot create sink colander component class.");
170 goto end;
171 }
172
173 (void) bt_component_class_sink_set_init_method(
174 colander_comp_cls, colander_init);
175 (void) bt_component_class_sink_set_finalize_method(
176 colander_comp_cls, colander_finalize);
177 (void) bt_component_class_sink_set_graph_is_configured_method(
178 colander_comp_cls, colander_graph_is_configured);
179
180 end:
181 bt_object_get_ref(colander_comp_cls);
182 return colander_comp_cls;
183 }
184
185 __attribute__((destructor)) static
186 void put_colander(void) {
187 BT_OBJECT_PUT_REF_AND_RESET(colander_comp_cls);
188 }
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