diff options
Diffstat (limited to 'libnetdata/dyn_conf/dyn_conf.c')
| -rw-r--r-- | libnetdata/dyn_conf/dyn_conf.c | 1140 |
1 files changed, 0 insertions, 1140 deletions
diff --git a/libnetdata/dyn_conf/dyn_conf.c b/libnetdata/dyn_conf/dyn_conf.c deleted file mode 100644 index ee4b4733a..000000000 --- a/libnetdata/dyn_conf/dyn_conf.c +++ /dev/null @@ -1,1140 +0,0 @@ -// SPDX-License-Identifier: GPL-3.0-or-later - -#include "dyn_conf.h" - -#define DYN_CONF_PATH_MAX (4096) -#define DYN_CONF_DIR VARLIB_DIR "/dynconf" - -#define DYN_CONF_JOB_SCHEMA "job_schema" -#define DYN_CONF_SCHEMA "schema" -#define DYN_CONF_MODULE_LIST "modules" -#define DYN_CONF_JOB_LIST "jobs" -#define DYN_CONF_CFG_EXT ".cfg" - -void job_flags_wallkthrough(dyncfg_job_flg_t flags, void (*cb)(const char *str, void *data), void *data) -{ - if (flags & JOB_FLG_PS_LOADED) - cb("JOB_FLG_PS_LOADED", data); - if (flags & JOB_FLG_PLUGIN_PUSHED) - cb("JOB_FLG_PLUGIN_PUSHED", data); - if (flags & JOB_FLG_STREAMING_PUSHED) - cb("JOB_FLG_STREAMING_PUSHED", data); - if (flags & JOB_FLG_USER_CREATED) - cb("JOB_FLG_USER_CREATED", data); -} - -struct deferred_cfg_send { - DICTIONARY *plugins_dict; - char *plugin_name; - char *module_name; - char *job_name; - struct deferred_cfg_send *next; -}; - -bool dyncfg_shutdown = false; -struct deferred_cfg_send *deferred_configs = NULL; -pthread_mutex_t deferred_configs_lock = PTHREAD_MUTEX_INITIALIZER; -pthread_cond_t deferred_configs_cond = PTHREAD_COND_INITIALIZER; - -static void deferred_config_free(struct deferred_cfg_send *dcs) -{ - freez(dcs->plugin_name); - freez(dcs->module_name); - freez(dcs->job_name); - freez(dcs); -} - -static void deferred_config_push_back(DICTIONARY *plugins_dict, const char *plugin_name, const char *module_name, const char *job_name) -{ - struct deferred_cfg_send *deferred = callocz(1, sizeof(struct deferred_cfg_send)); - deferred->plugin_name = strdupz(plugin_name); - if (module_name != NULL) { - deferred->module_name = strdupz(module_name); - if (job_name != NULL) - deferred->job_name = strdupz(job_name); - } - deferred->plugins_dict = plugins_dict; - pthread_mutex_lock(&deferred_configs_lock); - if (dyncfg_shutdown) { - pthread_mutex_unlock(&deferred_configs_lock); - deferred_config_free(deferred); - return; - } - struct deferred_cfg_send *last = deferred_configs; - if (last == NULL) - deferred_configs = deferred; - else { - while (last->next != NULL) - last = last->next; - last->next = deferred; - } - pthread_cond_signal(&deferred_configs_cond); - pthread_mutex_unlock(&deferred_configs_lock); -} - -static void deferred_configs_unlock() -{ - dyncfg_shutdown = true; - // if we get cancelled in pthread_cond_wait - // we will arrive at cancelled cleanup handler - // with mutex locked we need to unlock it - pthread_mutex_unlock(&deferred_configs_lock); -} - -static struct deferred_cfg_send *deferred_config_pop(void *ptr) -{ - pthread_mutex_lock(&deferred_configs_lock); - while (deferred_configs == NULL) { - netdata_thread_cleanup_push(deferred_configs_unlock, ptr); - pthread_cond_wait(&deferred_configs_cond, &deferred_configs_lock); - netdata_thread_cleanup_pop(0); - } - struct deferred_cfg_send *deferred = deferred_configs; - deferred_configs = deferred_configs->next; - pthread_mutex_unlock(&deferred_configs_lock); - return deferred; -} - -static int _get_list_of_plugins_json_cb(const DICTIONARY_ITEM *item, void *entry, void *data) -{ - UNUSED(item); - json_object *obj = (json_object *)data; - struct configurable_plugin *plugin = (struct configurable_plugin *)entry; - - json_object *plugin_name = json_object_new_string(plugin->name); - json_object_array_add(obj, plugin_name); - - return 0; -} - -json_object *get_list_of_plugins_json(DICTIONARY *plugins_dict) -{ - json_object *obj = json_object_new_array(); - - dictionary_walkthrough_read(plugins_dict, _get_list_of_plugins_json_cb, obj); - - return obj; -} - -static int _get_list_of_modules_json_cb(const DICTIONARY_ITEM *item, void *entry, void *data) -{ - UNUSED(item); - json_object *obj = (json_object *)data; - struct module *module = (struct module *)entry; - - json_object *json_module = json_object_new_object(); - - json_object *json_item = json_object_new_string(module->name); - json_object_object_add(json_module, "name", json_item); - const char *module_type = module_type2str(module->type); - json_item = json_object_new_string(module_type); - json_object_object_add(json_module, "type", json_item); - - json_object_array_add(obj, json_module); - - return 0; -} - -json_object *get_list_of_modules_json(struct configurable_plugin *plugin) -{ - json_object *obj = json_object_new_array(); - - pthread_mutex_lock(&plugin->lock); - - dictionary_walkthrough_read(plugin->modules, _get_list_of_modules_json_cb, obj); - - pthread_mutex_unlock(&plugin->lock); - - return obj; -} - -const char *job_status2str(enum job_status status) -{ - switch (status) { - case JOB_STATUS_UNKNOWN: - return "unknown"; - case JOB_STATUS_STOPPED: - return "stopped"; - case JOB_STATUS_RUNNING: - return "running"; - case JOB_STATUS_ERROR: - return "error"; - default: - return "unknown"; - } -} - -static void _job_flags2str_cb(const char *str, void *data) -{ - json_object *json_item = json_object_new_string(str); - json_object_array_add((json_object *)data, json_item); -} - -json_object *job2json(struct job *job) { - json_object *json_job = json_object_new_object(); - - json_object *json_item = json_object_new_string(job->name); - json_object_object_add(json_job, "name", json_item); - - json_item = json_object_new_string(job_type2str(job->type)); - json_object_object_add(json_job, "type", json_item); - - netdata_mutex_lock(&job->lock); - json_item = json_object_new_string(job_status2str(job->status)); - json_object_object_add(json_job, "status", json_item); - - json_item = json_object_new_int(job->state); - json_object_object_add(json_job, "state", json_item); - - json_item = job->reason == NULL ? NULL : json_object_new_string(job->reason); - json_object_object_add(json_job, "reason", json_item); - - int64_t last_state_update_s = job->last_state_update / USEC_PER_SEC; - int64_t last_state_update_us = job->last_state_update % USEC_PER_SEC; - - json_item = json_object_new_int64(last_state_update_s); - json_object_object_add(json_job, "last_state_update_s", json_item); - - json_item = json_object_new_int64(last_state_update_us); - json_object_object_add(json_job, "last_state_update_us", json_item); - - json_item = json_object_new_array(); - job_flags_wallkthrough(job->flags, _job_flags2str_cb, json_item); - json_object_object_add(json_job, "flags", json_item); - - netdata_mutex_unlock(&job->lock); - - return json_job; -} - -static int _get_list_of_jobs_json_cb(const DICTIONARY_ITEM *item, void *entry, void *data) -{ - UNUSED(item); - json_object *obj = (json_object *)data; - - json_object *json_job = job2json((struct job *)entry); - - json_object_array_add(obj, json_job); - - return 0; -} - -json_object *get_list_of_jobs_json(struct module *module) -{ - json_object *obj = json_object_new_array(); - - pthread_mutex_lock(&module->lock); - - dictionary_walkthrough_read(module->jobs, _get_list_of_jobs_json_cb, obj); - - pthread_mutex_unlock(&module->lock); - - return obj; -} - -struct job *get_job_by_name(struct module *module, const char *job_name) -{ - return dictionary_get(module->jobs, job_name); -} - -void unlink_job(const char *plugin_name, const char *module_name, const char *job_name) -{ - // as we are going to do unlink here we better make sure we have all to build proper path - if (unlikely(job_name == NULL || module_name == NULL || plugin_name == NULL)) - return; - BUFFER *buffer = buffer_create(DYN_CONF_PATH_MAX, NULL); - buffer_sprintf(buffer, DYN_CONF_DIR "/%s/%s/%s" DYN_CONF_CFG_EXT, plugin_name, module_name, job_name); - if (unlink(buffer_tostring(buffer))) - netdata_log_error("Cannot remove file %s", buffer_tostring(buffer)); - - buffer_free(buffer); -} - -void delete_job(struct configurable_plugin *plugin, const char *module_name, const char *job_name) -{ - struct module *module = get_module_by_name(plugin, module_name); - if (module == NULL) { - error_report("DYNCFG module \"%s\" not found", module_name); - return; - } - - struct job *job_item = get_job_by_name(module, job_name); - if (job_item == NULL) { - error_report("DYNCFG job \"%s\" not found", job_name); - return; - } - - dictionary_del(module->jobs, job_name); -} - -void delete_job_pname(DICTIONARY *plugins_dict, const char *plugin_name, const char *module_name, const char *job_name) -{ - const DICTIONARY_ITEM *plugin_item = dictionary_get_and_acquire_item(plugins_dict, plugin_name); - if (plugin_item == NULL) { - error_report("DYNCFG plugin \"%s\" not found", plugin_name); - return; - } - struct configurable_plugin *plugin = dictionary_acquired_item_value(plugin_item); - - delete_job(plugin, module_name, job_name); - - dictionary_acquired_item_release(plugins_dict, plugin_item); -} - -int remove_job(struct module *module, struct job *job) -{ - enum set_config_result rc = module->delete_job_cb(module->job_config_cb_usr_ctx, module->plugin->name, module->name, job->name); - - if (rc != SET_CONFIG_ACCEPTED) { - error_report("DYNCFG module \"%s\" rejected delete job for \"%s\"", module->name, job->name); - return 0; - } - return 1; -} - -struct module *get_module_by_name(struct configurable_plugin *plugin, const char *module_name) -{ - return dictionary_get(plugin->modules, module_name); -} - -inline struct configurable_plugin *get_plugin_by_name(DICTIONARY *plugins_dict, const char *name) -{ - return dictionary_get(plugins_dict, name); -} - -static int store_config(const char *module_name, const char *submodule_name, const char *cfg_idx, dyncfg_config_t cfg) -{ - BUFFER *filename = buffer_create(DYN_CONF_PATH_MAX, NULL); - buffer_sprintf(filename, DYN_CONF_DIR "/%s", module_name); - if (mkdir(buffer_tostring(filename), 0755) == -1) { - if (errno != EEXIST) { - netdata_log_error("DYNCFG store_config: failed to create module directory %s", buffer_tostring(filename)); - buffer_free(filename); - return 1; - } - } - - if (submodule_name != NULL) { - buffer_sprintf(filename, "/%s", submodule_name); - if (mkdir(buffer_tostring(filename), 0755) == -1) { - if (errno != EEXIST) { - netdata_log_error("DYNCFG store_config: failed to create submodule directory %s", buffer_tostring(filename)); - buffer_free(filename); - return 1; - } - } - } - - if (cfg_idx != NULL) - buffer_sprintf(filename, "/%s", cfg_idx); - - buffer_strcat(filename, DYN_CONF_CFG_EXT); - - - error_report("DYNCFG store_config: %s", buffer_tostring(filename)); - - //write to file - FILE *f = fopen(buffer_tostring(filename), "w"); - if (f == NULL) { - error_report("DYNCFG store_config: failed to open %s for writing", buffer_tostring(filename)); - buffer_free(filename); - return 1; - } - - fwrite(cfg.data, cfg.data_size, 1, f); - fclose(f); - - buffer_free(filename); - return 0; -} - -#ifdef NETDATA_DEV_MODE -#define netdata_dev_fatal(...) fatal(__VA_ARGS__) -#else -#define netdata_dev_fatal(...) error_report(__VA_ARGS__) -#endif - -void dyn_conf_store_config(const char *function, const char *payload, struct configurable_plugin *plugin) { - dyncfg_config_t config = { - .data = (char*)payload, - .data_size = strlen(payload) - }; - - char *fnc = strdupz(function); - // split fnc to words - char *words[DYNCFG_MAX_WORDS]; - size_t words_c = quoted_strings_splitter(fnc, words, DYNCFG_MAX_WORDS, isspace_map_pluginsd); - - const char *fnc_name = get_word(words, words_c, 0); - if (fnc_name == NULL) { - error_report("Function name expected \"%s\"", function); - goto CLEANUP; - } - if (strncmp(fnc_name, FUNCTION_NAME_SET_PLUGIN_CONFIG, strlen(FUNCTION_NAME_SET_PLUGIN_CONFIG)) == 0) { - store_config(plugin->name, NULL, NULL, config); - goto CLEANUP; - } - - if (words_c < 2) { - error_report("Module name expected \"%s\"", function); - goto CLEANUP; - } - const char *module_name = get_word(words, words_c, 1); - if (strncmp(fnc_name, FUNCTION_NAME_SET_MODULE_CONFIG, strlen(FUNCTION_NAME_SET_MODULE_CONFIG)) == 0) { - store_config(plugin->name, module_name, NULL, config); - goto CLEANUP; - } - - if (words_c < 3) { - error_report("Job name expected \"%s\"", function); - goto CLEANUP; - } - const char *job_name = get_word(words, words_c, 2); - if (strncmp(fnc_name, FUNCTION_NAME_SET_JOB_CONFIG, strlen(FUNCTION_NAME_SET_JOB_CONFIG)) == 0) { - store_config(plugin->name, module_name, job_name, config); - goto CLEANUP; - } - - netdata_dev_fatal("Unknown function \"%s\"", function); - -CLEANUP: - freez(fnc); -} - -dyncfg_config_t load_config(const char *plugin_name, const char *module_name, const char *job_id) -{ - BUFFER *filename = buffer_create(DYN_CONF_PATH_MAX, NULL); - buffer_sprintf(filename, DYN_CONF_DIR "/%s", plugin_name); - if (module_name != NULL) - buffer_sprintf(filename, "/%s", module_name); - - if (job_id != NULL) - buffer_sprintf(filename, "/%s", job_id); - - buffer_strcat(filename, DYN_CONF_CFG_EXT); - - dyncfg_config_t config; - long bytes; - config.data = read_by_filename(buffer_tostring(filename), &bytes); - - if (config.data == NULL) - error_report("DYNCFG load_config: failed to load config from %s", buffer_tostring(filename)); - - config.data_size = bytes; - - buffer_free(filename); - - return config; -} - -char *set_plugin_config(struct configurable_plugin *plugin, dyncfg_config_t cfg) -{ - enum set_config_result rc = plugin->set_config_cb(plugin->cb_usr_ctx, plugin->name, &cfg); - if (rc != SET_CONFIG_ACCEPTED) { - error_report("DYNCFG plugin \"%s\" rejected config", plugin->name); - return "plugin rejected config"; - } - - return NULL; -} - -static char *set_module_config(struct module *mod, dyncfg_config_t cfg) -{ - struct configurable_plugin *plugin = mod->plugin; - - enum set_config_result rc = mod->set_config_cb(mod->config_cb_usr_ctx, plugin->name, mod->name, &cfg); - if (rc != SET_CONFIG_ACCEPTED) { - error_report("DYNCFG module \"%s\" rejected config", plugin->name); - return "module rejected config"; - } - - return NULL; -} - -struct job *job_new(const char *job_id) -{ - struct job *job = callocz(1, sizeof(struct job)); - job->state = JOB_STATUS_UNKNOWN; - job->last_state_update = now_realtime_usec(); - job->name = strdupz(job_id); - netdata_mutex_init(&job->lock); - return job; -} - -static inline void job_del(struct job *job) -{ - netdata_mutex_destroy(&job->lock); - freez(job->reason); - freez((void*)job->name); - freez(job); -} - -void job_del_cb(const DICTIONARY_ITEM *item, void *value, void *data) -{ - UNUSED(item); - UNUSED(data); - job_del((struct job *)value); -} - -void module_del_cb(const DICTIONARY_ITEM *item, void *value, void *data) -{ - UNUSED(item); - UNUSED(data); - struct module *mod = (struct module *)value; - dictionary_destroy(mod->jobs); - freez(mod->name); - freez(mod); -} - -const DICTIONARY_ITEM *register_plugin(DICTIONARY *plugins_dict, struct configurable_plugin *plugin, bool localhost) -{ - if (get_plugin_by_name(plugins_dict, plugin->name) != NULL) { - error_report("DYNCFG plugin \"%s\" already registered", plugin->name); - return NULL; - } - - if (plugin->set_config_cb == NULL) { - error_report("DYNCFG plugin \"%s\" has no set_config_cb", plugin->name); - return NULL; - } - - pthread_mutex_init(&plugin->lock, NULL); - - plugin->modules = dictionary_create(DICT_OPTION_VALUE_LINK_DONT_CLONE); - dictionary_register_delete_callback(plugin->modules, module_del_cb, NULL); - - if (localhost) - deferred_config_push_back(plugins_dict, plugin->name, NULL, NULL); - - dictionary_set(plugins_dict, plugin->name, plugin, sizeof(plugin)); - - // the plugin keeps the pointer to the dictionary item, so we need to acquire it - return dictionary_get_and_acquire_item(plugins_dict, plugin->name); -} - -void unregister_plugin(DICTIONARY *plugins_dict, const DICTIONARY_ITEM *plugin) -{ - struct configurable_plugin *plug = dictionary_acquired_item_value(plugin); - dictionary_acquired_item_release(plugins_dict, plugin); - dictionary_del(plugins_dict, plug->name); -} - -int register_module(DICTIONARY *plugins_dict, struct configurable_plugin *plugin, struct module *module, bool localhost) -{ - if (get_module_by_name(plugin, module->name) != NULL) { - error_report("DYNCFG module \"%s\" already registered", module->name); - return 1; - } - - pthread_mutex_init(&module->lock, NULL); - - if (localhost) - deferred_config_push_back(plugins_dict, plugin->name, module->name, NULL); - - module->plugin = plugin; - - if (module->type == MOD_TYPE_ARRAY) { - module->jobs = dictionary_create(DICT_OPTION_VALUE_LINK_DONT_CLONE); - dictionary_register_delete_callback(module->jobs, job_del_cb, NULL); - - if (localhost) { - // load all jobs from disk - BUFFER *path = buffer_create(DYN_CONF_PATH_MAX, NULL); - buffer_sprintf(path, "%s/%s/%s", DYN_CONF_DIR, plugin->name, module->name); - DIR *dir = opendir(buffer_tostring(path)); - if (dir != NULL) { - struct dirent *ent; - while ((ent = readdir(dir)) != NULL) { - if (ent->d_name[0] == '.') - continue; - if (ent->d_type != DT_REG) - continue; - size_t len = strnlen(ent->d_name, NAME_MAX); - if (len <= strlen(DYN_CONF_CFG_EXT)) - continue; - if (strcmp(ent->d_name + len - strlen(DYN_CONF_CFG_EXT), DYN_CONF_CFG_EXT) != 0) - continue; - ent->d_name[len - strlen(DYN_CONF_CFG_EXT)] = '\0'; - - struct job *job = job_new(ent->d_name); - job->module = module; - job->flags = JOB_FLG_PS_LOADED; - job->type = JOB_TYPE_USER; - - dictionary_set(module->jobs, job->name, job, sizeof(job)); - - deferred_config_push_back(plugins_dict, plugin->name, module->name, ent->d_name); - } - closedir(dir); - } - buffer_free(path); - } - } - - dictionary_set(plugin->modules, module->name, module, sizeof(module)); - - return 0; -} - -int register_job(DICTIONARY *plugins_dict, const char *plugin_name, const char *module_name, const char *job_name, enum job_type job_type, dyncfg_job_flg_t flags, int ignore_existing) -{ - int rc = 1; - const DICTIONARY_ITEM *plugin_item = dictionary_get_and_acquire_item(plugins_dict, plugin_name); - if (plugin_item == NULL) { - error_report("plugin \"%s\" not registered", plugin_name); - return rc; - } - struct configurable_plugin *plugin = dictionary_acquired_item_value(plugin_item); - struct module *mod = get_module_by_name(plugin, module_name); - if (mod == NULL) { - error_report("module \"%s\" not registered", module_name); - goto ERR_EXIT; - } - if (mod->type != MOD_TYPE_ARRAY) { - error_report("module \"%s\" is not an array", module_name); - goto ERR_EXIT; - } - if (get_job_by_name(mod, job_name) != NULL) { - if (!ignore_existing) - error_report("job \"%s\" already registered", job_name); - goto ERR_EXIT; - } - - struct job *job = job_new(job_name); - job->module = mod; - job->flags = flags; - job->type = job_type; - - dictionary_set(mod->jobs, job->name, job, sizeof(job)); - - rc = 0; -ERR_EXIT: - dictionary_acquired_item_release(plugins_dict, plugin_item); - return rc; -} - -void freez_dyncfg(void *ptr) { - freez(ptr); -} - -#ifdef NETDATA_TEST_DYNCFG -static void handle_dyncfg_root(DICTIONARY *plugins_dict, struct uni_http_response *resp, int method) -{ - if (method != HTTP_METHOD_GET) { - resp->content = "method not allowed"; - resp->content_length = strlen(resp->content); - resp->status = HTTP_RESP_METHOD_NOT_ALLOWED; - return; - } - json_object *obj = get_list_of_plugins_json(plugins_dict); - json_object *wrapper = json_object_new_object(); - json_object_object_add(wrapper, "configurable_plugins", obj); - resp->content = strdupz(json_object_to_json_string_ext(wrapper, JSON_C_TO_STRING_PRETTY)); - json_object_put(wrapper); - resp->status = HTTP_RESP_OK; - resp->content_type = CT_APPLICATION_JSON; - resp->content_free = freez_dyncfg; - resp->content_length = strlen(resp->content); -} - -static void handle_plugin_root(struct uni_http_response *resp, int method, struct configurable_plugin *plugin, void *post_payload, size_t post_payload_size) -{ - switch(method) { - case HTTP_METHOD_GET: - { - dyncfg_config_t cfg = plugin->get_config_cb(plugin->cb_usr_ctx, plugin->name); - resp->content = mallocz(cfg.data_size); - memcpy(resp->content, cfg.data, cfg.data_size); - resp->status = HTTP_RESP_OK; - resp->content_free = freez_dyncfg; - resp->content_length = cfg.data_size; - return; - } - case HTTP_METHOD_PUT: - { - char *response; - if (post_payload == NULL) { - resp->content = "no payload"; - resp->content_length = strlen(resp->content); - resp->status = HTTP_RESP_BAD_REQUEST; - return; - } - dyncfg_config_t cont = { - .data = post_payload, - .data_size = post_payload_size - }; - response = set_plugin_config(plugin, cont); - if (response == NULL) { - resp->status = HTTP_RESP_OK; - resp->content = "OK"; - resp->content_length = strlen(resp->content); - } else { - resp->status = HTTP_RESP_BAD_REQUEST; - resp->content = response; - resp->content_length = strlen(resp->content); - } - return; - } - default: - resp->content = "method not allowed"; - resp->content_length = strlen(resp->content); - resp->status = HTTP_RESP_METHOD_NOT_ALLOWED; - return; - } -} -#endif - -void handle_module_root(struct uni_http_response *resp, int method, struct configurable_plugin *plugin, const char *module, void *post_payload, size_t post_payload_size) -{ - if (strncmp(module, DYN_CONF_SCHEMA, sizeof(DYN_CONF_SCHEMA)) == 0) { - dyncfg_config_t cfg = plugin->get_config_schema_cb(plugin->cb_usr_ctx, plugin->name); - resp->content = mallocz(cfg.data_size); - memcpy(resp->content, cfg.data, cfg.data_size); - resp->status = HTTP_RESP_OK; - resp->content_free = freez_dyncfg; - resp->content_length = cfg.data_size; - return; - } - if (strncmp(module, DYN_CONF_MODULE_LIST, sizeof(DYN_CONF_MODULE_LIST)) == 0) { - if (method != HTTP_METHOD_GET) { - resp->content = "method not allowed (only GET)"; - resp->content_length = strlen(resp->content); - resp->status = HTTP_RESP_METHOD_NOT_ALLOWED; - return; - } - json_object *obj = get_list_of_modules_json(plugin); - json_object *wrapper = json_object_new_object(); - json_object_object_add(wrapper, "modules", obj); - resp->content = strdupz(json_object_to_json_string_ext(wrapper, JSON_C_TO_STRING_PRETTY)); - json_object_put(wrapper); - resp->status = HTTP_RESP_OK; - resp->content_type = CT_APPLICATION_JSON; - resp->content_free = freez_dyncfg; - resp->content_length = strlen(resp->content); - return; - } - struct module *mod = get_module_by_name(plugin, module); - if (mod == NULL) { - resp->content = "module not found"; - resp->content_length = strlen(resp->content); - resp->status = HTTP_RESP_NOT_FOUND; - return; - } - if (method == HTTP_METHOD_GET) { - dyncfg_config_t cfg = mod->get_config_cb(mod->config_cb_usr_ctx, plugin->name, mod->name); - resp->content = mallocz(cfg.data_size); - memcpy(resp->content, cfg.data, cfg.data_size); - resp->status = HTTP_RESP_OK; - resp->content_free = freez_dyncfg; - resp->content_length = cfg.data_size; - return; - } else if (method == HTTP_METHOD_PUT) { - char *response; - if (post_payload == NULL) { - resp->content = "no payload"; - resp->content_length = strlen(resp->content); - resp->status = HTTP_RESP_BAD_REQUEST; - return; - } - dyncfg_config_t cont = { - .data = post_payload, - .data_size = post_payload_size - }; - response = set_module_config(mod, cont); - if (response == NULL) { - resp->status = HTTP_RESP_OK; - resp->content = "OK"; - resp->content_length = strlen(resp->content); - } else { - resp->status = HTTP_RESP_BAD_REQUEST; - resp->content = response; - resp->content_length = strlen(resp->content); - } - return; - } - resp->content = "method not allowed"; - resp->content_length = strlen(resp->content); - resp->status = HTTP_RESP_METHOD_NOT_ALLOWED; -} - -static inline void _handle_job_root(struct uni_http_response *resp, int method, struct module *mod, const char *job_id, void *post_payload, size_t post_payload_size, struct job *job) -{ - if (method == HTTP_METHOD_POST) { - if (job != NULL) { - resp->content = "can't POST, job already exists (use PUT to update?)"; - resp->content_length = strlen(resp->content); - resp->status = HTTP_RESP_BAD_REQUEST; - return; - } - if (post_payload == NULL) { - resp->content = "no payload"; - resp->content_length = strlen(resp->content); - resp->status = HTTP_RESP_BAD_REQUEST; - return; - } - dyncfg_config_t cont = { - .data = post_payload, - .data_size = post_payload_size - }; - if (mod->set_job_config_cb(mod->job_config_cb_usr_ctx, mod->plugin->name, mod->name, job_id, &cont)) { - resp->content = "failed to add job"; - resp->content_length = strlen(resp->content); - resp->status = HTTP_RESP_INTERNAL_SERVER_ERROR; - return; - } - resp->status = HTTP_RESP_OK; - resp->content = "OK"; - resp->content_length = strlen(resp->content); - return; - } - if (job == NULL) { - resp->content = "job not found"; - resp->content_length = strlen(resp->content); - resp->status = HTTP_RESP_NOT_FOUND; - return; - } - switch (method) { - case HTTP_METHOD_GET: - { - dyncfg_config_t cfg = mod->get_job_config_cb(mod->job_config_cb_usr_ctx, mod->plugin->name, mod->name, job->name); - resp->content = mallocz(cfg.data_size); - memcpy(resp->content, cfg.data, cfg.data_size); - resp->status = HTTP_RESP_OK; - resp->content_free = freez_dyncfg; - resp->content_length = cfg.data_size; - return; - } - case HTTP_METHOD_PUT: - { - if (post_payload == NULL) { - resp->content = "missing payload"; - resp->content_length = strlen(resp->content); - resp->status = HTTP_RESP_BAD_REQUEST; - return; - } - dyncfg_config_t cont = { - .data = post_payload, - .data_size = post_payload_size - }; - if (mod->set_job_config_cb(mod->job_config_cb_usr_ctx, mod->plugin->name, mod->name, job->name, &cont) != SET_CONFIG_ACCEPTED) { - error_report("DYNCFG module \"%s\" rejected config for job \"%s\"", mod->name, job->name); - resp->content = "failed to set job config"; - resp->content_length = strlen(resp->content); - resp->status = HTTP_RESP_INTERNAL_SERVER_ERROR; - return; - } - resp->status = HTTP_RESP_OK; - resp->content = "OK"; - resp->content_length = strlen(resp->content); - return; - } - case HTTP_METHOD_DELETE: - { - if (!remove_job(mod, job)) { - resp->content = "failed to remove job"; - resp->content_length = strlen(resp->content); - resp->status = HTTP_RESP_INTERNAL_SERVER_ERROR; - return; - } - resp->status = HTTP_RESP_OK; - resp->content = "OK"; - resp->content_length = strlen(resp->content); - return; - } - default: - resp->content = "method not allowed (only GET, PUT, DELETE)"; - resp->content_length = strlen(resp->content); - resp->status = HTTP_RESP_METHOD_NOT_ALLOWED; - return; - } -} - -void handle_job_root(struct uni_http_response *resp, int method, struct module *mod, const char *job_id, void *post_payload, size_t post_payload_size) -{ - if (strncmp(job_id, DYN_CONF_SCHEMA, sizeof(DYN_CONF_SCHEMA)) == 0) { - dyncfg_config_t cfg = mod->get_config_schema_cb(mod->config_cb_usr_ctx, mod->plugin->name, mod->name); - resp->content = mallocz(cfg.data_size); - memcpy(resp->content, cfg.data, cfg.data_size); - resp->status = HTTP_RESP_OK; - resp->content_free = freez_dyncfg; - resp->content_length = cfg.data_size; - return; - } - if (strncmp(job_id, DYN_CONF_JOB_SCHEMA, sizeof(DYN_CONF_JOB_SCHEMA)) == 0) { - dyncfg_config_t cfg = mod->get_job_config_schema_cb(mod->job_config_cb_usr_ctx, mod->plugin->name, mod->name); - resp->content = mallocz(cfg.data_size); - memcpy(resp->content, cfg.data, cfg.data_size); - resp->status = HTTP_RESP_OK; - resp->content_free = freez_dyncfg; - resp->content_length = cfg.data_size; - return; - } - if (strncmp(job_id, DYN_CONF_JOB_LIST, sizeof(DYN_CONF_JOB_LIST)) == 0) { - if (mod->type != MOD_TYPE_ARRAY) { - resp->content = "module type is not job_array (can't get the list of jobs)"; - resp->content_length = strlen(resp->content); - resp->status = HTTP_RESP_NOT_FOUND; - return; - } - if (method != HTTP_METHOD_GET) { - resp->content = "method not allowed (only GET)"; - resp->content_length = strlen(resp->content); - resp->status = HTTP_RESP_METHOD_NOT_ALLOWED; - return; - } - json_object *obj = get_list_of_jobs_json(mod); - json_object *wrapper = json_object_new_object(); - json_object_object_add(wrapper, "jobs", obj); - resp->content = strdupz(json_object_to_json_string_ext(wrapper, JSON_C_TO_STRING_PRETTY)); - json_object_put(wrapper); - resp->status = HTTP_RESP_OK; - resp->content_type = CT_APPLICATION_JSON; - resp->content_free = freez_dyncfg; - resp->content_length = strlen(resp->content); - return; - } - const DICTIONARY_ITEM *job_item = dictionary_get_and_acquire_item(mod->jobs, job_id); - struct job *job = dictionary_acquired_item_value(job_item); - - _handle_job_root(resp, method, mod, job_id, post_payload, post_payload_size, job); - - dictionary_acquired_item_release(mod->jobs, job_item); -} - -struct uni_http_response dyn_conf_process_http_request( - DICTIONARY *plugins_dict __maybe_unused, - int method __maybe_unused, - const char *plugin __maybe_unused, - const char *module __maybe_unused, - const char *job_id __maybe_unused, - void *post_payload __maybe_unused, - size_t post_payload_size __maybe_unused) -{ - struct uni_http_response resp = { - .status = HTTP_RESP_INTERNAL_SERVER_ERROR, - .content_type = CT_TEXT_PLAIN, - .content = HTTP_RESP_INTERNAL_SERVER_ERROR_STR, - .content_free = NULL, - .content_length = 0 - }; -#ifndef NETDATA_TEST_DYNCFG - resp.content = "DYNCFG is disabled (as it is for now developer only feature). This will be enabled by default when ready for technical preview."; - resp.content_length = strlen(resp.content); - resp.status = HTTP_RESP_PRECOND_FAIL; - return resp; -#else - if (plugin == NULL) { - handle_dyncfg_root(plugins_dict, &resp, method); - return resp; - } - const DICTIONARY_ITEM *plugin_item = dictionary_get_and_acquire_item(plugins_dict, plugin); - if (plugin_item == NULL) { - resp.content = "plugin not found"; - resp.content_length = strlen(resp.content); - resp.status = HTTP_RESP_NOT_FOUND; - return resp; - } - struct configurable_plugin *plug = dictionary_acquired_item_value(plugin_item); - if (module == NULL) { - handle_plugin_root(&resp, method, plug, post_payload, post_payload_size); - goto EXIT_PLUGIN; - } - if (job_id == NULL) { - handle_module_root(&resp, method, plug, module, post_payload, post_payload_size); - goto EXIT_PLUGIN; - } - // for modules we do not do get_and_acquire as modules are never removed (only together with the plugin) - struct module *mod = get_module_by_name(plug, module); - if (mod == NULL) { - resp.content = "module not found"; - resp.content_length = strlen(resp.content); - resp.status = HTTP_RESP_NOT_FOUND; - goto EXIT_PLUGIN; - } - if (mod->type != MOD_TYPE_ARRAY) { - resp.content = "400 - this module is not array type"; - resp.content_length = strlen(resp.content); - resp.status = HTTP_RESP_BAD_REQUEST; - goto EXIT_PLUGIN; - } - handle_job_root(&resp, method, mod, job_id, post_payload, post_payload_size); - -EXIT_PLUGIN: - dictionary_acquired_item_release(plugins_dict, plugin_item); - return resp; -#endif -} - -void plugin_del_cb(const DICTIONARY_ITEM *item, void *value, void *data) -{ - UNUSED(item); - UNUSED(data); - struct configurable_plugin *plugin = (struct configurable_plugin *)value; - dictionary_destroy(plugin->modules); - freez(plugin->name); - freez(plugin); -} - -// on failure - return NULL - all unlocked, nothing acquired -// on success - return pointer to job item - keep job and plugin acquired and locked!!! -// for caller convenience (to prevent another lock and races) -// caller is responsible to unlock the job and release it when not needed anymore -// this also avoids dependency creep -const DICTIONARY_ITEM *report_job_status_acq_lock(DICTIONARY *plugins_dict, const DICTIONARY_ITEM **plugin_acq_item, DICTIONARY **job_dict, const char *plugin_name, const char *module_name, const char *job_name, enum job_status status, int status_code, char *reason) -{ - *plugin_acq_item = dictionary_get_and_acquire_item(plugins_dict, plugin_name); - if (*plugin_acq_item == NULL) { - netdata_log_error("plugin %s not found", plugin_name); - return NULL; - } - - struct configurable_plugin *plug = dictionary_acquired_item_value(*plugin_acq_item); - struct module *mod = get_module_by_name(plug, module_name); - if (mod == NULL) { - netdata_log_error("module %s not found", module_name); - dictionary_acquired_item_release(plugins_dict, *plugin_acq_item); - return NULL; - } - if (mod->type != MOD_TYPE_ARRAY) { - netdata_log_error("module %s is not array", module_name); - dictionary_acquired_item_release(plugins_dict, *plugin_acq_item); - return NULL; - } - *job_dict = mod->jobs; - const DICTIONARY_ITEM *job_item = dictionary_get_and_acquire_item(mod->jobs, job_name); - if (job_item == NULL) { - netdata_log_error("job %s not found", job_name); - dictionary_acquired_item_release(plugins_dict, *plugin_acq_item); - return NULL; - } - struct job *job = dictionary_acquired_item_value(job_item); - - pthread_mutex_lock(&job->lock); - job->status = status; - job->state = status_code; - if (job->reason != NULL) { - freez(job->reason); - } - job->reason = reason != NULL ? strdupz(reason) : NULL; // reason is optional - job->last_state_update = now_realtime_usec(); - - job->dirty = true; - - // no unlock and acquired_item_release on success on purpose - return job_item; -} - -int dyn_conf_init(void) -{ - if (mkdir(DYN_CONF_DIR, 0755) == -1) { - if (errno != EEXIST) { - netdata_log_error("failed to create directory for dynamic configuration"); - return 1; - } - } - - return 0; -} - -static void dyncfg_cleanup(void *ptr) { - struct netdata_static_thread *static_thread = (struct netdata_static_thread *) ptr; - static_thread->enabled = NETDATA_MAIN_THREAD_EXITING; - - netdata_log_info("cleaning up..."); - - pthread_mutex_lock(&deferred_configs_lock); - dyncfg_shutdown = true; - while (deferred_configs != NULL) { - struct deferred_cfg_send *dcs = deferred_configs; - deferred_configs = dcs->next; - deferred_config_free(dcs); - } - pthread_mutex_unlock(&deferred_configs_lock); - - static_thread->enabled = NETDATA_MAIN_THREAD_EXITED; -} - -void *dyncfg_main(void *ptr) -{ - netdata_thread_cleanup_push(dyncfg_cleanup, ptr); - - while (!netdata_exit) { - struct deferred_cfg_send *dcs = deferred_config_pop(ptr); - DICTIONARY *plugins_dict = dcs->plugins_dict; -#ifdef NETDATA_INTERNAL_CHECKS - if (plugins_dict == NULL) { - fatal("DYNCFG, plugins_dict is NULL"); - deferred_config_free(dcs); - continue; - } -#endif - - const DICTIONARY_ITEM *plugin_item = dictionary_get_and_acquire_item(plugins_dict, dcs->plugin_name); - if (plugin_item == NULL) { - error_report("DYNCFG, plugin %s not found", dcs->plugin_name); - deferred_config_free(dcs); - continue; - } - struct configurable_plugin *plugin = dictionary_acquired_item_value(plugin_item); - if (dcs->module_name == NULL) { - dyncfg_config_t cfg = load_config(dcs->plugin_name, NULL, NULL); - if (cfg.data != NULL) { - plugin->set_config_cb(plugin->cb_usr_ctx, plugin->name, &cfg); - freez(cfg.data); - } - } else if (dcs->job_name == NULL) { - dyncfg_config_t cfg = load_config(dcs->plugin_name, dcs->module_name, NULL); - if (cfg.data != NULL) { - struct module *mod = get_module_by_name(plugin, dcs->module_name); - mod->set_config_cb(mod->config_cb_usr_ctx, plugin->name, mod->name, &cfg); - freez(cfg.data); - } - } else { - dyncfg_config_t cfg = load_config(dcs->plugin_name, dcs->module_name, dcs->job_name); - if (cfg.data != NULL) { - struct module *mod = get_module_by_name(plugin, dcs->module_name); - mod->set_job_config_cb(mod->job_config_cb_usr_ctx, plugin->name, mod->name, dcs->job_name, &cfg); - freez(cfg.data); - } - } - deferred_config_free(dcs); - dictionary_acquired_item_release(plugins_dict, plugin_item); - } - - netdata_thread_cleanup_pop(1); - return NULL; -} - -bool is_dyncfg_function(const char *function_name, uint8_t type) { - // TODO add hash to speed things up - if (type & (DYNCFG_FUNCTION_TYPE_GET | DYNCFG_FUNCTION_TYPE_REGULAR)) { - if (strncmp(function_name, FUNCTION_NAME_GET_PLUGIN_CONFIG, strlen(FUNCTION_NAME_GET_PLUGIN_CONFIG)) == 0) - return true; - if (strncmp(function_name, FUNCTION_NAME_GET_PLUGIN_CONFIG_SCHEMA, strlen(FUNCTION_NAME_GET_PLUGIN_CONFIG_SCHEMA)) == 0) - return true; - if (strncmp(function_name, FUNCTION_NAME_GET_MODULE_CONFIG, strlen(FUNCTION_NAME_GET_MODULE_CONFIG)) == 0) - return true; - if (strncmp(function_name, FUNCTION_NAME_GET_MODULE_CONFIG_SCHEMA, strlen(FUNCTION_NAME_GET_MODULE_CONFIG_SCHEMA)) == 0) - return true; - if (strncmp(function_name, FUNCTION_NAME_GET_JOB_CONFIG, strlen(FUNCTION_NAME_GET_JOB_CONFIG)) == 0) - return true; - if (strncmp(function_name, FUNCTION_NAME_GET_JOB_CONFIG_SCHEMA, strlen(FUNCTION_NAME_GET_JOB_CONFIG_SCHEMA)) == 0) - return true; - } - - if (type & (DYNCFG_FUNCTION_TYPE_SET | DYNCFG_FUNCTION_TYPE_PAYLOAD)) { - if (strncmp(function_name, FUNCTION_NAME_SET_PLUGIN_CONFIG, strlen(FUNCTION_NAME_SET_PLUGIN_CONFIG)) == 0) - return true; - if (strncmp(function_name, FUNCTION_NAME_SET_MODULE_CONFIG, strlen(FUNCTION_NAME_SET_MODULE_CONFIG)) == 0) - return true; - if (strncmp(function_name, FUNCTION_NAME_SET_JOB_CONFIG, strlen(FUNCTION_NAME_SET_JOB_CONFIG)) == 0) - return true; - } - - if (type & (DYNCFG_FUNCTION_TYPE_DELETE | DYNCFG_FUNCTION_TYPE_REGULAR)) { - if (strncmp(function_name, FUNCTION_NAME_DELETE_JOB, strlen(FUNCTION_NAME_DELETE_JOB)) == 0) - return true; - } - - return false; -} |