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" | |
413bc2c4 JG |
35 | #include "metadata.h" |
36 | #include "data-stream.h" | |
ea0b4b9e JG |
37 | |
38 | static bool ctf_fs_debug; | |
39 | ||
40 | static | |
760051fa JG |
41 | struct bt_notification *ctf_fs_iterator_get( |
42 | struct bt_notification_iterator *iterator) | |
ea0b4b9e | 43 | { |
760051fa | 44 | return NULL; |
ea0b4b9e JG |
45 | } |
46 | ||
47 | static | |
760051fa JG |
48 | enum bt_notification_iterator_status ctf_fs_iterator_next( |
49 | struct bt_notification_iterator *iterator) | |
ea0b4b9e | 50 | { |
760051fa | 51 | return BT_NOTIFICATION_ITERATOR_STATUS_UNSUPPORTED; |
ea0b4b9e | 52 | } |
bfd20a42 | 53 | |
760051fa JG |
54 | static |
55 | void ctf_fs_iterator_destroy_data(struct ctf_fs_iterator *ctf_it) | |
56 | { | |
57 | g_free(ctf_it); | |
58 | } | |
59 | ||
60 | static | |
61 | void ctf_fs_iterator_destroy(struct bt_notification_iterator *it) | |
62 | { | |
63 | void *data = bt_notification_iterator_get_private_data(it); | |
64 | ||
65 | ctf_fs_iterator_destroy_data(data); | |
66 | } | |
67 | ||
68 | static | |
ea0b4b9e JG |
69 | enum bt_component_status ctf_fs_iterator_init(struct bt_component *source, |
70 | struct bt_notification_iterator *it) | |
4c1456f0 | 71 | { |
760051fa | 72 | struct ctf_fs_iterator *ctf_it; |
413bc2c4 | 73 | enum bt_component_status ret = BT_COMPONENT_STATUS_OK; |
ea0b4b9e JG |
74 | |
75 | assert(source && it); | |
760051fa JG |
76 | ctf_it = g_new0(struct ctf_fs_iterator, 1); |
77 | if (!ctf_it) { | |
78 | ret = BT_COMPONENT_STATUS_NOMEM; | |
79 | goto end; | |
80 | } | |
81 | ||
82 | ret = bt_notification_iterator_set_get_cb(it, ctf_fs_iterator_get); | |
83 | if (ret) { | |
84 | goto error; | |
85 | } | |
86 | ||
87 | ret = bt_notification_iterator_set_next_cb(it, ctf_fs_iterator_next); | |
88 | if (ret) { | |
89 | goto error; | |
90 | } | |
91 | ||
92 | ret = bt_notification_iterator_set_destroy_cb(it, | |
93 | ctf_fs_iterator_destroy); | |
94 | if (ret) { | |
95 | goto error; | |
96 | } | |
97 | ||
98 | ret = bt_notification_iterator_set_private_data(it, ctf_it); | |
99 | if (ret) { | |
100 | goto error; | |
101 | } | |
102 | end: | |
ea0b4b9e | 103 | return ret; |
760051fa JG |
104 | error: |
105 | (void) bt_notification_iterator_set_private_data(it, NULL); | |
106 | ctf_fs_iterator_destroy_data(ctf_it); | |
107 | return ret; | |
108 | } | |
109 | ||
760051fa JG |
110 | static |
111 | void ctf_fs_destroy_data(struct ctf_fs_component *component) | |
112 | { | |
56a1cced JG |
113 | if (component->trace_path) { |
114 | g_string_free(component->trace_path, TRUE); | |
115 | } | |
116 | ||
413bc2c4 JG |
117 | ctf_fs_metadata_fini(&component->metadata); |
118 | ctf_fs_data_stream_fini(&component->data_stream); | |
760051fa JG |
119 | g_free(component); |
120 | } | |
121 | ||
122 | static | |
123 | void ctf_fs_destroy(struct bt_component *component) | |
124 | { | |
125 | void *data = bt_component_get_private_data(component); | |
126 | ||
127 | ctf_fs_destroy_data(data); | |
4c1456f0 JG |
128 | } |
129 | ||
56a1cced JG |
130 | static |
131 | struct ctf_fs_component *ctf_fs_create(struct bt_value *params) | |
132 | { | |
133 | struct ctf_fs_component *ctf_fs; | |
1ef09eb5 | 134 | struct bt_value *value = NULL; |
56a1cced JG |
135 | const char *path; |
136 | enum bt_value_status ret; | |
137 | ||
138 | ctf_fs = g_new0(struct ctf_fs_component, 1); | |
139 | if (!ctf_fs) { | |
140 | goto end; | |
141 | } | |
142 | ||
143 | /* FIXME: should probably look for a source URI */ | |
144 | value = bt_value_map_get(params, "path"); | |
145 | if (!value || bt_value_is_null(value) || !bt_value_is_string(value)) { | |
146 | goto error; | |
147 | } | |
148 | ||
149 | ret = bt_value_string_get(value, &path); | |
150 | if (ret != BT_VALUE_STATUS_OK) { | |
151 | goto error; | |
152 | } | |
153 | ||
154 | ctf_fs->trace_path = g_string_new(path); | |
155 | if (!ctf_fs->trace_path) { | |
156 | goto error; | |
157 | } | |
158 | ||
159 | ctf_fs->error_fp = stderr; | |
160 | ctf_fs->page_size = (size_t) getpagesize(); | |
413bc2c4 JG |
161 | ctf_fs_data_stream_init(ctf_fs, &ctf_fs->data_stream); |
162 | ctf_fs_metadata_set_trace(ctf_fs); | |
163 | ctf_fs_data_stream_open_streams(ctf_fs); | |
1ef09eb5 JG |
164 | goto end; |
165 | ||
56a1cced JG |
166 | error: |
167 | ctf_fs_destroy_data(ctf_fs); | |
1ef09eb5 JG |
168 | end: |
169 | BT_PUT(value); | |
56a1cced JG |
170 | return ctf_fs; |
171 | } | |
172 | ||
ea0b4b9e JG |
173 | BT_HIDDEN |
174 | enum bt_component_status ctf_fs_init(struct bt_component *source, | |
5c80adeb | 175 | struct bt_value *params) |
ea0b4b9e JG |
176 | { |
177 | struct ctf_fs_component *ctf_fs; | |
178 | enum bt_component_status ret = BT_COMPONENT_STATUS_OK; | |
179 | ||
180 | assert(source); | |
181 | ctf_fs_debug = g_strcmp0(getenv("CTF_FS_DEBUG"), "1") == 0; | |
182 | ctf_fs = ctf_fs_create(params); | |
183 | if (!ctf_fs) { | |
184 | ret = BT_COMPONENT_STATUS_NOMEM; | |
185 | goto end; | |
186 | } | |
4c1456f0 | 187 | |
ea0b4b9e JG |
188 | ret = bt_component_set_destroy_cb(source, ctf_fs_destroy); |
189 | if (ret != BT_COMPONENT_STATUS_OK) { | |
190 | goto error; | |
191 | } | |
192 | ||
193 | ret = bt_component_set_private_data(source, ctf_fs); | |
194 | if (ret != BT_COMPONENT_STATUS_OK) { | |
195 | goto error; | |
196 | } | |
197 | ||
198 | ret = bt_component_source_set_iterator_init_cb(source, | |
199 | ctf_fs_iterator_init); | |
200 | if (ret != BT_COMPONENT_STATUS_OK) { | |
201 | goto error; | |
202 | } | |
413bc2c4 | 203 | |
ea0b4b9e JG |
204 | end: |
205 | return ret; | |
206 | error: | |
207 | (void) bt_component_set_private_data(source, NULL); | |
760051fa | 208 | ctf_fs_destroy_data(ctf_fs); |
ea0b4b9e JG |
209 | return ret; |
210 | } |