ctf: use unique_ptr to manage ctf_metadata_decoder lifetime
[babeltrace.git] / src / plugins / ctf / fs-src / metadata.cpp
1 /*
2 * SPDX-License-Identifier: MIT
3 *
4 * Copyright 2016 Philippe Proulx <pproulx@efficios.com>
5 * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
6 */
7
8 #include "common/assert.h"
9
10 #include "../common/src/metadata/tsdl/decoder.hpp"
11 #include "file.hpp"
12 #include "fs.hpp"
13 #include "metadata.hpp"
14
15 FILE *ctf_fs_metadata_open_file(const char *trace_path, const bt2c::Logger& logger)
16 {
17 GString *metadata_path;
18 FILE *fp = NULL;
19
20 metadata_path = g_string_new(trace_path);
21 if (!metadata_path) {
22 goto end;
23 }
24
25 g_string_append(metadata_path, G_DIR_SEPARATOR_S CTF_FS_METADATA_FILENAME);
26 fp = fopen(metadata_path->str, "rb");
27 if (!fp) {
28 BT_CPPLOGE_ERRNO_APPEND_CAUSE_SPEC(logger, "Failed to open metadata file", ": path=\"{}\"",
29 metadata_path->str);
30 }
31
32 g_string_free(metadata_path, TRUE);
33
34 end:
35 return fp;
36 }
37
38 static struct ctf_fs_file *get_file(const char *trace_path, const bt2c::Logger& logger)
39 {
40 struct ctf_fs_file *file = ctf_fs_file_create(logger);
41
42 if (!file) {
43 goto error;
44 }
45
46 g_string_append(file->path, trace_path);
47 g_string_append(file->path, G_DIR_SEPARATOR_S CTF_FS_METADATA_FILENAME);
48
49 if (ctf_fs_file_open(file, "rb")) {
50 goto error;
51 }
52
53 goto end;
54
55 error:
56 if (file) {
57 ctf_fs_file_destroy(file);
58 file = NULL;
59 }
60
61 end:
62 return file;
63 }
64
65 int ctf_fs_metadata_set_trace_class(bt_self_component *self_comp, struct ctf_fs_trace *ctf_fs_trace,
66 struct ctf_fs_metadata_config *config)
67 {
68 int ret = 0;
69 struct ctf_fs_file *file = NULL;
70 ctf_metadata_decoder_config decoder_config {ctf_fs_trace->logger};
71
72 decoder_config.self_comp = self_comp;
73 decoder_config.clock_class_offset_s = config ? config->clock_class_offset_s : 0;
74 decoder_config.clock_class_offset_ns = config ? config->clock_class_offset_ns : 0;
75 decoder_config.force_clock_class_origin_unix_epoch =
76 config ? config->force_clock_class_origin_unix_epoch : false;
77 decoder_config.create_trace_class = true;
78
79 file = get_file(ctf_fs_trace->path->str, ctf_fs_trace->logger);
80 if (!file) {
81 BT_CPPLOGE_SPEC(ctf_fs_trace->logger, "Cannot create metadata file object.");
82 ret = -1;
83 goto end;
84 }
85
86 ctf_fs_trace->metadata->decoder = ctf_metadata_decoder_create(&decoder_config);
87 if (!ctf_fs_trace->metadata->decoder) {
88 BT_CPPLOGE_SPEC(ctf_fs_trace->logger, "Cannot create metadata decoder object.");
89 ret = -1;
90 goto end;
91 }
92
93 ret = ctf_metadata_decoder_append_content(ctf_fs_trace->metadata->decoder.get(), file->fp);
94 if (ret) {
95 BT_CPPLOGE_SPEC(ctf_fs_trace->logger, "Cannot update metadata decoder's content.");
96 goto end;
97 }
98
99 ctf_fs_trace->metadata->trace_class =
100 ctf_metadata_decoder_get_ir_trace_class(ctf_fs_trace->metadata->decoder.get());
101 BT_ASSERT(!self_comp || ctf_fs_trace->metadata->trace_class);
102 ctf_fs_trace->metadata->tc =
103 ctf_metadata_decoder_borrow_ctf_trace_class(ctf_fs_trace->metadata->decoder.get());
104 BT_ASSERT(ctf_fs_trace->metadata->tc);
105
106 end:
107 ctf_fs_file_destroy(file);
108 return ret;
109 }
110
111 int ctf_fs_metadata_init(struct ctf_fs_metadata *)
112 {
113 /* Nothing to initialize for the moment. */
114 return 0;
115 }
116
117 void ctf_fs_metadata_fini(struct ctf_fs_metadata *metadata)
118 {
119 free(metadata->text);
120
121 if (metadata->trace_class) {
122 BT_TRACE_CLASS_PUT_REF_AND_RESET(metadata->trace_class);
123 }
124
125 metadata->decoder.reset();
126 }
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