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