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f3c9a159 | 1 | /* |
0235b0db | 2 | * SPDX-License-Identifier: MIT |
f3c9a159 SM |
3 | * |
4 | * Copyright (c) 2016 Philippe Proulx <pproulx@efficios.com> | |
f3c9a159 SM |
5 | */ |
6 | ||
7 | #include <autodisc/autodisc.h> | |
8 | #include <common/common.h> | |
9 | ||
10 | /* | |
11 | * Interface between the Python bindings and the auto source discovery system: | |
12 | * input strings go in, specs for components to instantiate go out. | |
13 | * | |
14 | * `inputs` must be an array of strings, the list of inputs in which to look | |
15 | * for traces. `plugin_set` is the set of plugins to query. | |
16 | * | |
17 | * Returns a map with the following entries: | |
18 | * | |
19 | * - status: signed integer, return status of this function | |
20 | * - results: array, each element is an array describing one auto | |
21 | * source discovery result (see `struct | |
22 | * auto_source_discovery_result` for more details about these): | |
23 | * | |
24 | * - 0: plugin name, string | |
25 | * - 1: class name, string | |
26 | * - 2: inputs, array of strings | |
27 | * - 3: original input indices, array of unsigned integers | |
28 | * | |
29 | * This function can also return None, if it failed to allocate memory | |
30 | * for the return value and status code. | |
31 | */ | |
7c7301d5 | 32 | static |
f3c9a159 SM |
33 | bt_value *bt_bt2_auto_discover_source_components(const bt_value *inputs, |
34 | const bt_plugin_set *plugin_set) | |
35 | { | |
36 | uint64_t i; | |
37 | int status = 0; | |
38 | static const char * const module_name = "Automatic source discovery"; | |
39 | const bt_plugin **plugins = NULL; | |
40 | const uint64_t plugin_count = bt_plugin_set_get_plugin_count(plugin_set); | |
41 | struct auto_source_discovery auto_disc = { 0 }; | |
42 | bt_value *result = NULL; | |
43 | bt_value *components_list = NULL; | |
44 | bt_value *component_info = NULL; | |
45 | bt_value_map_insert_entry_status insert_entry_status; | |
827e42e0 | 46 | const bt_error *error = NULL; |
f3c9a159 SM |
47 | |
48 | BT_ASSERT(bt_value_get_type(inputs) == BT_VALUE_TYPE_ARRAY); | |
393729a6 | 49 | for (i = 0; i < bt_value_array_get_length(inputs); i++) { |
f3c9a159 SM |
50 | const bt_value *elem = bt_value_array_borrow_element_by_index_const(inputs, i); |
51 | BT_ASSERT(bt_value_get_type(elem) == BT_VALUE_TYPE_STRING); | |
52 | } | |
53 | ||
54 | result = bt_value_map_create(); | |
55 | if (!result) { | |
8b305066 SM |
56 | #define BT_FMT "Failed to create a map value." |
57 | BT_LOGE_STR(BT_FMT); | |
58 | BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name, BT_FMT); | |
59 | #undef BT_FMT | |
f3c9a159 SM |
60 | PyErr_NoMemory(); |
61 | goto end; | |
62 | } | |
63 | ||
64 | status = auto_source_discovery_init(&auto_disc); | |
65 | if (status != 0) { | |
66 | BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name, | |
67 | "Failed to initialize auto source discovery structure."); | |
68 | goto error; | |
69 | } | |
70 | ||
71 | /* Create array of bt_plugin pointers from plugin set. */ | |
72 | plugins = g_new(const bt_plugin *, plugin_count); | |
73 | if (!plugins) { | |
74 | BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name, | |
75 | "Failed to allocate plugins array."); | |
76 | status = __BT_FUNC_STATUS_MEMORY_ERROR; | |
77 | goto error; | |
78 | } | |
79 | ||
80 | for (i = 0; i < plugin_count; i++) { | |
81 | plugins[i] = bt_plugin_set_borrow_plugin_by_index_const(plugin_set, i); | |
82 | } | |
83 | ||
84 | status = auto_discover_source_components( | |
85 | inputs, | |
86 | plugins, | |
87 | plugin_count, | |
88 | NULL, | |
89 | bt_python_bindings_bt2_log_level, | |
3dae1685 SM |
90 | &auto_disc, |
91 | NULL); | |
f3c9a159 SM |
92 | if (status != 0) { |
93 | BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name, | |
94 | "Failed to auto discover sources."); | |
95 | goto error; | |
96 | } | |
97 | ||
98 | components_list = bt_value_array_create(); | |
99 | if (!components_list) { | |
100 | BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name, | |
101 | "Failed to allocate one array value."); | |
102 | status = __BT_FUNC_STATUS_MEMORY_ERROR; | |
103 | goto error; | |
104 | } | |
105 | ||
106 | insert_entry_status = bt_value_map_insert_entry(result, "results", components_list); | |
107 | if (insert_entry_status != BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { | |
108 | BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name, | |
109 | "Failed to insert a map entry."); | |
110 | status = (int) insert_entry_status; | |
111 | goto error; | |
112 | } | |
113 | ||
114 | for (i = 0; i < auto_disc.results->len; i++) { | |
50233236 | 115 | struct auto_source_discovery_result *autodisc_result = |
f3c9a159 SM |
116 | g_ptr_array_index(auto_disc.results, i); |
117 | bt_value_array_append_element_status append_element_status; | |
118 | ||
119 | component_info = bt_value_array_create(); | |
120 | if (!component_info) { | |
121 | BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name, | |
122 | "Failed to allocate one array value."); | |
123 | status = __BT_FUNC_STATUS_MEMORY_ERROR; | |
124 | goto error; | |
125 | } | |
126 | ||
127 | append_element_status = bt_value_array_append_string_element( | |
50233236 | 128 | component_info, autodisc_result->plugin_name); |
f3c9a159 SM |
129 | if (append_element_status != BT_VALUE_ARRAY_APPEND_ELEMENT_STATUS_OK) { |
130 | BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name, | |
131 | "Failed to append one array element."); | |
132 | status = (int) append_element_status; | |
133 | goto error; | |
134 | } | |
135 | ||
136 | append_element_status = bt_value_array_append_string_element( | |
50233236 | 137 | component_info, autodisc_result->source_cc_name); |
f3c9a159 SM |
138 | if (append_element_status != BT_VALUE_ARRAY_APPEND_ELEMENT_STATUS_OK) { |
139 | BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name, | |
140 | "Failed to append one array element."); | |
141 | status = (int) append_element_status; | |
142 | goto error; | |
143 | } | |
144 | ||
145 | append_element_status = bt_value_array_append_element( | |
50233236 | 146 | component_info, autodisc_result->inputs); |
f3c9a159 SM |
147 | if (append_element_status != BT_VALUE_ARRAY_APPEND_ELEMENT_STATUS_OK) { |
148 | BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name, | |
149 | "Failed to append one array element."); | |
150 | status = (int) append_element_status; | |
151 | goto error; | |
152 | } | |
153 | ||
154 | append_element_status = bt_value_array_append_element( | |
50233236 | 155 | component_info, autodisc_result->original_input_indices); |
f3c9a159 SM |
156 | if (append_element_status != BT_VALUE_ARRAY_APPEND_ELEMENT_STATUS_OK) { |
157 | BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name, | |
158 | "Failed to append one array element."); | |
159 | status = (int) append_element_status; | |
160 | goto error; | |
161 | } | |
162 | ||
163 | append_element_status = bt_value_array_append_element(components_list, | |
164 | component_info); | |
165 | if (append_element_status != BT_VALUE_ARRAY_APPEND_ELEMENT_STATUS_OK) { | |
166 | BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_UNKNOWN(module_name, | |
167 | "Failed to append one array element."); | |
168 | status = (int) append_element_status; | |
169 | goto error; | |
170 | } | |
171 | ||
172 | BT_VALUE_PUT_REF_AND_RESET(component_info); | |
173 | } | |
174 | ||
175 | status = 0; | |
176 | goto end; | |
177 | error: | |
178 | BT_ASSERT(status != 0); | |
179 | ||
180 | end: | |
181 | if (result) { | |
827e42e0 SM |
182 | /* |
183 | * If an error happened, we must clear the error temporarily | |
184 | * while we insert the status in the map. | |
185 | */ | |
186 | error = bt_current_thread_take_error(); | |
f3c9a159 | 187 | insert_entry_status = bt_value_map_insert_signed_integer_entry(result, "status", status); |
827e42e0 SM |
188 | if (insert_entry_status == BT_VALUE_MAP_INSERT_ENTRY_STATUS_OK) { |
189 | if (error) { | |
190 | bt_current_thread_move_error(error); | |
191 | error = NULL; | |
192 | } | |
193 | } else { | |
f3c9a159 SM |
194 | BT_VALUE_PUT_REF_AND_RESET(result); |
195 | PyErr_NoMemory(); | |
196 | } | |
827e42e0 SM |
197 | |
198 | ||
f3c9a159 SM |
199 | } |
200 | ||
201 | auto_source_discovery_fini(&auto_disc); | |
202 | g_free(plugins); | |
203 | bt_value_put_ref(components_list); | |
204 | bt_value_put_ref(component_info); | |
205 | ||
827e42e0 SM |
206 | if (error) { |
207 | bt_error_release(error); | |
208 | } | |
209 | ||
f3c9a159 SM |
210 | return result; |
211 | } |