| 1 | /* |
| 2 | * SPDX-License-Identifier: GPL-2.0-only |
| 3 | * |
| 4 | * Copyright (C) 2020 Philippe Proulx <pproulx@efficios.com> |
| 5 | */ |
| 6 | |
| 7 | #include <stdlib.h> |
| 8 | #include <stdio.h> |
| 9 | #include <string.h> |
| 10 | #include <assert.h> |
| 11 | #include <babeltrace2/babeltrace.h> |
| 12 | #include <glib.h> |
| 13 | |
| 14 | #include "common/assert.h" |
| 15 | #include "utils.h" |
| 16 | |
| 17 | typedef void (* run_in_comp_cls_init_func)( |
| 18 | bt_self_component *self_comp, void *user_data); |
| 19 | |
| 20 | struct comp_cls_init_method_data { |
| 21 | run_in_comp_cls_init_func func; |
| 22 | void *user_data; |
| 23 | }; |
| 24 | |
| 25 | static |
| 26 | bt_component_class_initialize_method_status comp_cls_init( |
| 27 | bt_self_component_source *self_comp, |
| 28 | bt_self_component_source_configuration *conf, |
| 29 | const bt_value *params, void *init_method_data) |
| 30 | { |
| 31 | struct comp_cls_init_method_data *data = init_method_data; |
| 32 | |
| 33 | /* Call user function which is expected to abort */ |
| 34 | data->func(bt_self_component_source_as_self_component(self_comp), |
| 35 | data->user_data); |
| 36 | |
| 37 | /* Never reached! */ |
| 38 | return BT_COMPONENT_CLASS_INITIALIZE_METHOD_STATUS_ERROR; |
| 39 | } |
| 40 | |
| 41 | static |
| 42 | bt_message_iterator_class_next_method_status msg_iter_cls_next( |
| 43 | bt_self_message_iterator *self_msg_iter, |
| 44 | bt_message_array_const msgs, uint64_t capacity, |
| 45 | uint64_t *count) |
| 46 | { |
| 47 | /* Not used */ |
| 48 | return BT_MESSAGE_ITERATOR_CLASS_NEXT_METHOD_STATUS_ERROR; |
| 49 | } |
| 50 | |
| 51 | static |
| 52 | void run_in_comp_cls_init(run_in_comp_cls_init_func func, |
| 53 | void *user_data) |
| 54 | { |
| 55 | bt_message_iterator_class *msg_iter_cls; |
| 56 | bt_component_class_source *comp_cls; |
| 57 | bt_component_class_set_method_status set_method_status; |
| 58 | bt_graph *graph; |
| 59 | struct comp_cls_init_method_data init_method_data = { |
| 60 | .func = func, |
| 61 | .user_data = user_data, |
| 62 | }; |
| 63 | |
| 64 | /* Create component class */ |
| 65 | msg_iter_cls = bt_message_iterator_class_create(msg_iter_cls_next); |
| 66 | BT_ASSERT(msg_iter_cls); |
| 67 | comp_cls = bt_component_class_source_create("yo", msg_iter_cls); |
| 68 | BT_ASSERT(comp_cls); |
| 69 | set_method_status = bt_component_class_source_set_initialize_method( |
| 70 | comp_cls, comp_cls_init); |
| 71 | BT_ASSERT(set_method_status == BT_COMPONENT_CLASS_SET_METHOD_STATUS_OK); |
| 72 | |
| 73 | /* Create graph */ |
| 74 | graph = bt_graph_create(0); |
| 75 | BT_ASSERT(graph); |
| 76 | |
| 77 | /* |
| 78 | * Add source component: this calls the initialization method, |
| 79 | * calling `func`. |
| 80 | */ |
| 81 | (void) bt_graph_add_source_component_with_initialize_method_data(graph, |
| 82 | comp_cls, "whatever", NULL, &init_method_data, |
| 83 | BT_LOGGING_LEVEL_NONE, NULL); |
| 84 | |
| 85 | /* |
| 86 | * This point is not expected to be reached as func() is |
| 87 | * expected to abort. |
| 88 | */ |
| 89 | } |
| 90 | |
| 91 | static |
| 92 | void run_in_comp_cls_init_defer(bt_self_component *self_comp, |
| 93 | void *user_data) |
| 94 | { |
| 95 | cond_trigger_run_in_comp_cls_init_func user_func = user_data; |
| 96 | |
| 97 | user_func(self_comp); |
| 98 | } |
| 99 | |
| 100 | static |
| 101 | void run_trigger(const struct cond_trigger *trigger) |
| 102 | { |
| 103 | switch (trigger->func_type) { |
| 104 | case COND_TRIGGER_FUNC_TYPE_BASIC: |
| 105 | trigger->func.basic(); |
| 106 | break; |
| 107 | case COND_TRIGGER_FUNC_TYPE_RUN_IN_COMP_CLS_INIT: |
| 108 | run_in_comp_cls_init(run_in_comp_cls_init_defer, |
| 109 | trigger->func.run_in_comp_cls_init); |
| 110 | break; |
| 111 | default: |
| 112 | abort(); |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | static |
| 117 | void escape_json_string(const char *str, GString *escaped_str) |
| 118 | { |
| 119 | g_string_assign(escaped_str, ""); |
| 120 | |
| 121 | for (const char *ch = str; *ch; ch++) { |
| 122 | if (*ch == '\\' || *ch == '"') { |
| 123 | g_string_append_c(escaped_str, '\\'); |
| 124 | } |
| 125 | |
| 126 | g_string_append_c(escaped_str, *ch); |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | static |
| 131 | void list_triggers(const struct cond_trigger triggers[], size_t trigger_count) |
| 132 | { |
| 133 | GString *escaped_str = g_string_new(NULL); |
| 134 | size_t i; |
| 135 | |
| 136 | BT_ASSERT(escaped_str); |
| 137 | printf("["); |
| 138 | |
| 139 | for (i = 0; i < trigger_count; i++) { |
| 140 | const struct cond_trigger *trigger = &triggers[i]; |
| 141 | |
| 142 | /* Condition ID */ |
| 143 | escape_json_string(trigger->cond_id, escaped_str); |
| 144 | printf("{\"cond-id\":\"%s\",", escaped_str->str); |
| 145 | |
| 146 | /* Name starts with condition ID */ |
| 147 | printf("\"name\":\"%s", escaped_str->str); |
| 148 | |
| 149 | if (trigger->suffix) { |
| 150 | escape_json_string(trigger->suffix, escaped_str); |
| 151 | printf("-%s", escaped_str->str); |
| 152 | } |
| 153 | |
| 154 | printf("\"}"); |
| 155 | |
| 156 | if (i < trigger_count - 1) { |
| 157 | /* Comma between objects */ |
| 158 | printf(","); |
| 159 | } |
| 160 | } |
| 161 | |
| 162 | printf("]"); |
| 163 | g_string_free(escaped_str, TRUE); |
| 164 | fflush(stdout); |
| 165 | } |
| 166 | |
| 167 | void cond_main(int argc, const char *argv[], |
| 168 | const struct cond_trigger triggers[], size_t trigger_count) |
| 169 | { |
| 170 | BT_ASSERT(argc >= 2); |
| 171 | |
| 172 | if (strcmp(argv[1], "list") == 0) { |
| 173 | list_triggers(triggers, trigger_count); |
| 174 | } else if (strcmp(argv[1], "run") == 0) { |
| 175 | int index; |
| 176 | |
| 177 | BT_ASSERT(argc >= 3); |
| 178 | index = atoi(argv[2]); |
| 179 | BT_ASSERT(index >= 0 && index < trigger_count); |
| 180 | run_trigger(&triggers[index]); |
| 181 | } |
| 182 | } |