Commit | Line | Data |
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7a278c8e | 1 | /* |
ea0b4b9e | 2 | * fs.c |
7a278c8e | 3 | * |
ea0b4b9e | 4 | * Babeltrace CTF file system Reader Component |
7a278c8e | 5 | * |
f3bc2010 | 6 | * Copyright 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
7a278c8e JG |
7 | * |
8 | * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com> | |
9 | * | |
10 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
11 | * of this software and associated documentation files (the "Software"), to deal | |
12 | * in the Software without restriction, including without limitation the rights | |
13 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
14 | * copies of the Software, and to permit persons to whom the Software is | |
15 | * furnished to do so, subject to the following conditions: | |
16 | * | |
17 | * The above copyright notice and this permission notice shall be included in | |
18 | * all copies or substantial portions of the Software. | |
19 | * | |
20 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
21 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
22 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
23 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
24 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
25 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
26 | * SOFTWARE. | |
27 | */ | |
28 | ||
ea0b4b9e | 29 | #include <babeltrace/plugin/plugin-system.h> |
760051fa | 30 | #include <babeltrace/plugin/notification/iterator.h> |
ea0b4b9e JG |
31 | #include <glib.h> |
32 | #include <assert.h> | |
56a1cced JG |
33 | #include <unistd.h> |
34 | #include "fs.h" | |
ea0b4b9e JG |
35 | |
36 | static bool ctf_fs_debug; | |
37 | ||
38 | static | |
760051fa JG |
39 | struct bt_notification *ctf_fs_iterator_get( |
40 | struct bt_notification_iterator *iterator) | |
ea0b4b9e | 41 | { |
760051fa | 42 | return NULL; |
ea0b4b9e JG |
43 | } |
44 | ||
45 | static | |
760051fa JG |
46 | enum bt_notification_iterator_status ctf_fs_iterator_next( |
47 | struct bt_notification_iterator *iterator) | |
ea0b4b9e | 48 | { |
760051fa | 49 | return BT_NOTIFICATION_ITERATOR_STATUS_UNSUPPORTED; |
ea0b4b9e | 50 | } |
bfd20a42 | 51 | |
760051fa JG |
52 | static |
53 | void ctf_fs_iterator_destroy_data(struct ctf_fs_iterator *ctf_it) | |
54 | { | |
55 | g_free(ctf_it); | |
56 | } | |
57 | ||
58 | static | |
59 | void ctf_fs_iterator_destroy(struct bt_notification_iterator *it) | |
60 | { | |
61 | void *data = bt_notification_iterator_get_private_data(it); | |
62 | ||
63 | ctf_fs_iterator_destroy_data(data); | |
64 | } | |
65 | ||
66 | static | |
ea0b4b9e JG |
67 | enum bt_component_status ctf_fs_iterator_init(struct bt_component *source, |
68 | struct bt_notification_iterator *it) | |
4c1456f0 | 69 | { |
ea0b4b9e | 70 | enum bt_component_status ret = BT_COMPONENT_STATUS_OK; |
760051fa | 71 | struct ctf_fs_iterator *ctf_it; |
ea0b4b9e JG |
72 | |
73 | assert(source && it); | |
760051fa JG |
74 | ctf_it = g_new0(struct ctf_fs_iterator, 1); |
75 | if (!ctf_it) { | |
76 | ret = BT_COMPONENT_STATUS_NOMEM; | |
77 | goto end; | |
78 | } | |
79 | ||
80 | ret = bt_notification_iterator_set_get_cb(it, ctf_fs_iterator_get); | |
81 | if (ret) { | |
82 | goto error; | |
83 | } | |
84 | ||
85 | ret = bt_notification_iterator_set_next_cb(it, ctf_fs_iterator_next); | |
86 | if (ret) { | |
87 | goto error; | |
88 | } | |
89 | ||
90 | ret = bt_notification_iterator_set_destroy_cb(it, | |
91 | ctf_fs_iterator_destroy); | |
92 | if (ret) { | |
93 | goto error; | |
94 | } | |
95 | ||
96 | ret = bt_notification_iterator_set_private_data(it, ctf_it); | |
97 | if (ret) { | |
98 | goto error; | |
99 | } | |
100 | end: | |
ea0b4b9e | 101 | return ret; |
760051fa JG |
102 | error: |
103 | (void) bt_notification_iterator_set_private_data(it, NULL); | |
104 | ctf_fs_iterator_destroy_data(ctf_it); | |
105 | return ret; | |
106 | } | |
107 | ||
760051fa JG |
108 | static |
109 | void ctf_fs_destroy_data(struct ctf_fs_component *component) | |
110 | { | |
56a1cced JG |
111 | if (component->trace_path) { |
112 | g_string_free(component->trace_path, TRUE); | |
113 | } | |
114 | ||
115 | // ctf_fs_metadata_fini(&component->metadata); | |
116 | // ctf_fs_data_stream_fini(&component->data_stream); | |
760051fa JG |
117 | g_free(component); |
118 | } | |
119 | ||
120 | static | |
121 | void ctf_fs_destroy(struct bt_component *component) | |
122 | { | |
123 | void *data = bt_component_get_private_data(component); | |
124 | ||
125 | ctf_fs_destroy_data(data); | |
4c1456f0 JG |
126 | } |
127 | ||
56a1cced JG |
128 | static |
129 | struct ctf_fs_component *ctf_fs_create(struct bt_value *params) | |
130 | { | |
131 | struct ctf_fs_component *ctf_fs; | |
132 | struct bt_value *value; | |
133 | const char *path; | |
134 | enum bt_value_status ret; | |
135 | ||
136 | ctf_fs = g_new0(struct ctf_fs_component, 1); | |
137 | if (!ctf_fs) { | |
138 | goto end; | |
139 | } | |
140 | ||
141 | /* FIXME: should probably look for a source URI */ | |
142 | value = bt_value_map_get(params, "path"); | |
143 | if (!value || bt_value_is_null(value) || !bt_value_is_string(value)) { | |
144 | goto error; | |
145 | } | |
146 | ||
147 | ret = bt_value_string_get(value, &path); | |
148 | if (ret != BT_VALUE_STATUS_OK) { | |
149 | goto error; | |
150 | } | |
151 | ||
152 | ctf_fs->trace_path = g_string_new(path); | |
153 | if (!ctf_fs->trace_path) { | |
154 | goto error; | |
155 | } | |
156 | ||
157 | ctf_fs->error_fp = stderr; | |
158 | ctf_fs->page_size = (size_t) getpagesize(); | |
159 | ||
160 | end: | |
161 | return ctf_fs; | |
162 | error: | |
163 | ctf_fs_destroy_data(ctf_fs); | |
164 | return ctf_fs; | |
165 | } | |
166 | ||
ea0b4b9e JG |
167 | BT_HIDDEN |
168 | enum bt_component_status ctf_fs_init(struct bt_component *source, | |
5c80adeb | 169 | struct bt_value *params) |
ea0b4b9e JG |
170 | { |
171 | struct ctf_fs_component *ctf_fs; | |
172 | enum bt_component_status ret = BT_COMPONENT_STATUS_OK; | |
173 | ||
174 | assert(source); | |
175 | ctf_fs_debug = g_strcmp0(getenv("CTF_FS_DEBUG"), "1") == 0; | |
176 | ctf_fs = ctf_fs_create(params); | |
177 | if (!ctf_fs) { | |
178 | ret = BT_COMPONENT_STATUS_NOMEM; | |
179 | goto end; | |
180 | } | |
4c1456f0 | 181 | |
ea0b4b9e JG |
182 | ret = bt_component_set_destroy_cb(source, ctf_fs_destroy); |
183 | if (ret != BT_COMPONENT_STATUS_OK) { | |
184 | goto error; | |
185 | } | |
186 | ||
187 | ret = bt_component_set_private_data(source, ctf_fs); | |
188 | if (ret != BT_COMPONENT_STATUS_OK) { | |
189 | goto error; | |
190 | } | |
191 | ||
192 | ret = bt_component_source_set_iterator_init_cb(source, | |
193 | ctf_fs_iterator_init); | |
194 | if (ret != BT_COMPONENT_STATUS_OK) { | |
195 | goto error; | |
196 | } | |
197 | end: | |
198 | return ret; | |
199 | error: | |
200 | (void) bt_component_set_private_data(source, NULL); | |
760051fa | 201 | ctf_fs_destroy_data(ctf_fs); |
ea0b4b9e JG |
202 | return ret; |
203 | } |