ctf: msg-iter: add event timestamp accessors
[babeltrace.git] / src / plugins / ctf / fs-src / metadata.c
1 /*
2 * Copyright 2016 - Philippe Proulx <pproulx@efficios.com>
3 * Copyright 2010-2011 - EfficiOS Inc. and Linux Foundation
4 *
5 * Some functions are based on older functions written by Mathieu Desnoyers.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 * SOFTWARE.
24 */
25
26 #define BT_COMP_LOG_SELF_COMP self_comp
27 #define BT_LOG_OUTPUT_LEVEL log_level
28 #define BT_LOG_TAG "PLUGIN/SRC.CTF.FS/META"
29 #include "logging/comp-logging.h"
30
31 #include <stdio.h>
32 #include <stdint.h>
33 #include <stdlib.h>
34 #include <stdbool.h>
35 #include "common/assert.h"
36 #include <glib.h>
37 #include "common/uuid.h"
38 #include "compat/memstream.h"
39 #include <babeltrace2/babeltrace.h>
40
41 #include "fs.h"
42 #include "file.h"
43 #include "metadata.h"
44 #include "../common/metadata/decoder.h"
45
46 BT_HIDDEN
47 FILE *ctf_fs_metadata_open_file(const char *trace_path)
48 {
49 GString *metadata_path;
50 FILE *fp = NULL;
51
52 metadata_path = g_string_new(trace_path);
53 if (!metadata_path) {
54 goto end;
55 }
56
57 g_string_append(metadata_path, G_DIR_SEPARATOR_S CTF_FS_METADATA_FILENAME);
58 fp = fopen(metadata_path->str, "rb");
59 g_string_free(metadata_path, TRUE);
60 end:
61 return fp;
62 }
63
64 static struct ctf_fs_file *get_file(const char *trace_path,
65 bt_logging_level log_level, bt_self_component *self_comp)
66 {
67 struct ctf_fs_file *file = ctf_fs_file_create(log_level, self_comp);
68
69 if (!file) {
70 goto error;
71 }
72
73 g_string_append(file->path, trace_path);
74 g_string_append(file->path, G_DIR_SEPARATOR_S CTF_FS_METADATA_FILENAME);
75
76 if (ctf_fs_file_open(file, "rb")) {
77 goto error;
78 }
79
80 goto end;
81
82 error:
83 if (file) {
84 ctf_fs_file_destroy(file);
85 file = NULL;
86 }
87
88 end:
89 return file;
90 }
91
92 BT_HIDDEN
93 int ctf_fs_metadata_set_trace_class(
94 bt_self_component *self_comp,
95 struct ctf_fs_trace *ctf_fs_trace,
96 struct ctf_fs_metadata_config *config)
97 {
98 int ret = 0;
99 struct ctf_fs_file *file = NULL;
100 struct ctf_metadata_decoder_config decoder_config = {
101 .log_level = ctf_fs_trace->log_level,
102 .self_comp = self_comp,
103 .clock_class_offset_s = config ? config->clock_class_offset_s : 0,
104 .clock_class_offset_ns = config ? config->clock_class_offset_ns : 0,
105 };
106 bt_logging_level log_level = ctf_fs_trace->log_level;
107
108 file = get_file(ctf_fs_trace->path->str, log_level, self_comp);
109 if (!file) {
110 BT_COMP_LOGE("Cannot create metadata file object");
111 ret = -1;
112 goto end;
113 }
114
115 ctf_fs_trace->metadata->decoder = ctf_metadata_decoder_create(
116 &decoder_config);
117 if (!ctf_fs_trace->metadata->decoder) {
118 BT_COMP_LOGE("Cannot create metadata decoder object");
119 ret = -1;
120 goto end;
121 }
122
123 ret = ctf_metadata_decoder_decode(ctf_fs_trace->metadata->decoder,
124 file->fp);
125 if (ret) {
126 BT_COMP_LOGE("Cannot decode metadata file");
127 goto end;
128 }
129
130 ctf_fs_trace->metadata->trace_class =
131 ctf_metadata_decoder_get_ir_trace_class(
132 ctf_fs_trace->metadata->decoder);
133 BT_ASSERT(!self_comp || ctf_fs_trace->metadata->trace_class);
134 ctf_fs_trace->metadata->tc =
135 ctf_metadata_decoder_borrow_ctf_trace_class(
136 ctf_fs_trace->metadata->decoder);
137 BT_ASSERT(ctf_fs_trace->metadata->tc);
138
139 end:
140 ctf_fs_file_destroy(file);
141 return ret;
142 }
143
144 BT_HIDDEN
145 int ctf_fs_metadata_init(struct ctf_fs_metadata *metadata)
146 {
147 /* Nothing to initialize for the moment. */
148 return 0;
149 }
150
151 BT_HIDDEN
152 void ctf_fs_metadata_fini(struct ctf_fs_metadata *metadata)
153 {
154 free(metadata->text);
155
156 if (metadata->trace_class) {
157 BT_TRACE_CLASS_PUT_REF_AND_RESET(metadata->trace_class);
158 }
159
160 if (metadata->decoder) {
161 ctf_metadata_decoder_destroy(metadata->decoder);
162 }
163 }
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