diff options
Diffstat (limited to 'src/appconfig.c')
| -rw-r--r-- | src/appconfig.c | 606 |
1 files changed, 0 insertions, 606 deletions
diff --git a/src/appconfig.c b/src/appconfig.c deleted file mode 100644 index 2424864b..00000000 --- a/src/appconfig.c +++ /dev/null @@ -1,606 +0,0 @@ -#include "common.h" - -#define CONFIG_FILE_LINE_MAX ((CONFIG_MAX_NAME + CONFIG_MAX_VALUE + 1024) * 2) - -// ---------------------------------------------------------------------------- -// definitions - -#define CONFIG_VALUE_LOADED 0x01 // has been loaded from the config -#define CONFIG_VALUE_USED 0x02 // has been accessed from the program -#define CONFIG_VALUE_CHANGED 0x04 // has been changed from the loaded value -#define CONFIG_VALUE_CHECKED 0x08 // has been checked if the value is different from the default - -struct config_option { - avl avl; // the index - this has to be first! - - uint8_t flags; - uint32_t hash; // a simple hash to speed up searching - // we first compare hashes, and only if the hashes are equal we do string comparisons - - char *name; - char *value; - - struct config_option *next; // config->mutex protects just this -}; - -struct section { - avl avl; - - uint32_t hash; // a simple hash to speed up searching - // we first compare hashes, and only if the hashes are equal we do string comparisons - - char *name; - - struct section *next; // gloabl config_mutex protects just this - - struct config_option *values; - avl_tree_lock values_index; - - netdata_mutex_t mutex; // this locks only the writers, to ensure atomic updates - // readers are protected using the rwlock in avl_tree_lock -}; - -static int appconfig_section_compare(void *a, void *b); - -struct config netdata_config = { - .sections = NULL, - .mutex = NETDATA_MUTEX_INITIALIZER, - .index = { - { NULL, appconfig_section_compare }, - AVL_LOCK_INITIALIZER - } -}; - -struct config stream_config = { - .sections = NULL, - .mutex = NETDATA_MUTEX_INITIALIZER, - .index = { - { NULL, appconfig_section_compare }, - AVL_LOCK_INITIALIZER - } -}; - -// ---------------------------------------------------------------------------- -// locking - -static inline void appconfig_wrlock(struct config *root) { - netdata_mutex_lock(&root->mutex); -} - -static inline void appconfig_unlock(struct config *root) { - netdata_mutex_unlock(&root->mutex); -} - -static inline void config_section_wrlock(struct section *co) { - netdata_mutex_lock(&co->mutex); -} - -static inline void config_section_unlock(struct section *co) { - netdata_mutex_unlock(&co->mutex); -} - - -// ---------------------------------------------------------------------------- -// config name-value index - -static int appconfig_option_compare(void *a, void *b) { - if(((struct config_option *)a)->hash < ((struct config_option *)b)->hash) return -1; - else if(((struct config_option *)a)->hash > ((struct config_option *)b)->hash) return 1; - else return strcmp(((struct config_option *)a)->name, ((struct config_option *)b)->name); -} - -#define appconfig_option_index_add(co, cv) (struct config_option *)avl_insert_lock(&((co)->values_index), (avl *)(cv)) -#define appconfig_option_index_del(co, cv) (struct config_option *)avl_remove_lock(&((co)->values_index), (avl *)(cv)) - -static struct config_option *appconfig_option_index_find(struct section *co, const char *name, uint32_t hash) { - struct config_option tmp; - tmp.hash = (hash)?hash:simple_hash(name); - tmp.name = (char *)name; - - return (struct config_option *)avl_search_lock(&(co->values_index), (avl *) &tmp); -} - - -// ---------------------------------------------------------------------------- -// config sections index - -static int appconfig_section_compare(void *a, void *b) { - if(((struct section *)a)->hash < ((struct section *)b)->hash) return -1; - else if(((struct section *)a)->hash > ((struct section *)b)->hash) return 1; - else return strcmp(((struct section *)a)->name, ((struct section *)b)->name); -} - -#define appconfig_index_add(root, cfg) (struct section *)avl_insert_lock(&(root)->index, (avl *)(cfg)) -#define appconfig_index_del(root, cfg) (struct section *)avl_remove_lock(&(root)->index, (avl *)(cfg)) - -static struct section *appconfig_index_find(struct config *root, const char *name, uint32_t hash) { - struct section tmp; - tmp.hash = (hash)?hash:simple_hash(name); - tmp.name = (char *)name; - - return (struct section *)avl_search_lock(&root->index, (avl *) &tmp); -} - - -// ---------------------------------------------------------------------------- -// config section methods - -static inline struct section *appconfig_section_find(struct config *root, const char *section) { - return appconfig_index_find(root, section, 0); -} - -static inline struct section *appconfig_section_create(struct config *root, const char *section) { - debug(D_CONFIG, "Creating section '%s'.", section); - - struct section *co = callocz(1, sizeof(struct section)); - co->name = strdupz(section); - co->hash = simple_hash(co->name); - netdata_mutex_init(&co->mutex); - - avl_init_lock(&co->values_index, appconfig_option_compare); - - if(unlikely(appconfig_index_add(root, co) != co)) - error("INTERNAL ERROR: indexing of section '%s', already exists.", co->name); - - appconfig_wrlock(root); - struct section *co2 = root->sections; - if(co2) { - while (co2->next) co2 = co2->next; - co2->next = co; - } - else root->sections = co; - appconfig_unlock(root); - - return co; -} - - -// ---------------------------------------------------------------------------- -// config name-value methods - -static inline struct config_option *appconfig_value_create(struct section *co, const char *name, const char *value) { - debug(D_CONFIG, "Creating config entry for name '%s', value '%s', in section '%s'.", name, value, co->name); - - struct config_option *cv = callocz(1, sizeof(struct config_option)); - cv->name = strdupz(name); - cv->hash = simple_hash(cv->name); - cv->value = strdupz(value); - - struct config_option *found = appconfig_option_index_add(co, cv); - if(found != cv) { - error("indexing of config '%s' in section '%s': already exists - using the existing one.", cv->name, co->name); - freez(cv->value); - freez(cv->name); - freez(cv); - return found; - } - - config_section_wrlock(co); - struct config_option *cv2 = co->values; - if(cv2) { - while (cv2->next) cv2 = cv2->next; - cv2->next = cv; - } - else co->values = cv; - config_section_unlock(co); - - return cv; -} - -int appconfig_exists(struct config *root, const char *section, const char *name) { - struct config_option *cv; - - debug(D_CONFIG, "request to get config in section '%s', name '%s'", section, name); - - struct section *co = appconfig_section_find(root, section); - if(!co) return 0; - - cv = appconfig_option_index_find(co, name, 0); - if(!cv) return 0; - - return 1; -} - -int appconfig_move(struct config *root, const char *section_old, const char *name_old, const char *section_new, const char *name_new) { - struct config_option *cv_old, *cv_new; - int ret = -1; - - debug(D_CONFIG, "request to rename config in section '%s', old name '%s', to section '%s', new name '%s'", section_old, name_old, section_new, name_new); - - struct section *co_old = appconfig_section_find(root, section_old); - if(!co_old) return ret; - - struct section *co_new = appconfig_section_find(root, section_new); - if(!co_new) co_new = appconfig_section_create(root, section_new); - - config_section_wrlock(co_old); - if(co_old != co_new) - config_section_wrlock(co_new); - - cv_old = appconfig_option_index_find(co_old, name_old, 0); - if(!cv_old) goto cleanup; - - cv_new = appconfig_option_index_find(co_new, name_new, 0); - if(cv_new) goto cleanup; - - if(unlikely(appconfig_option_index_del(co_old, cv_old) != cv_old)) - error("INTERNAL ERROR: deletion of config '%s' from section '%s', deleted tge wrong config entry.", cv_old->name, co_old->name); - - if(co_old->values == cv_old) { - co_old->values = cv_old->next; - } - else { - struct config_option *t; - for(t = co_old->values; t && t->next != cv_old ;t = t->next) ; - if(!t || t->next != cv_old) - error("INTERNAL ERROR: cannot find variable '%s' in section '%s' of the config - but it should be there.", cv_old->name, co_old->name); - else - t->next = cv_old->next; - } - - freez(cv_old->name); - cv_old->name = strdupz(name_new); - cv_old->hash = simple_hash(cv_old->name); - - cv_new = cv_old; - cv_new->next = co_new->values; - co_new->values = cv_new; - - if(unlikely(appconfig_option_index_add(co_new, cv_old) != cv_old)) - error("INTERNAL ERROR: re-indexing of config '%s' in section '%s', already exists.", cv_old->name, co_new->name); - - ret = 0; - -cleanup: - if(co_old != co_new) - config_section_unlock(co_new); - config_section_unlock(co_old); - return ret; -} - -char *appconfig_get(struct config *root, const char *section, const char *name, const char *default_value) -{ - struct config_option *cv; - - debug(D_CONFIG, "request to get config in section '%s', name '%s', default_value '%s'", section, name, default_value); - - struct section *co = appconfig_section_find(root, section); - if(!co) co = appconfig_section_create(root, section); - - cv = appconfig_option_index_find(co, name, 0); - if(!cv) { - cv = appconfig_value_create(co, name, default_value); - if(!cv) return NULL; - } - cv->flags |= CONFIG_VALUE_USED; - - if((cv->flags & CONFIG_VALUE_LOADED) || (cv->flags & CONFIG_VALUE_CHANGED)) { - // this is a loaded value from the config file - // if it is different that the default, mark it - if(!(cv->flags & CONFIG_VALUE_CHECKED)) { - if(strcmp(cv->value, default_value) != 0) cv->flags |= CONFIG_VALUE_CHANGED; - cv->flags |= CONFIG_VALUE_CHECKED; - } - } - - return(cv->value); -} - -long long appconfig_get_number(struct config *root, const char *section, const char *name, long long value) -{ - char buffer[100], *s; - sprintf(buffer, "%lld", value); - - s = appconfig_get(root, section, name, buffer); - if(!s) return value; - - return strtoll(s, NULL, 0); -} - -LONG_DOUBLE appconfig_get_float(struct config *root, const char *section, const char *name, LONG_DOUBLE value) -{ - char buffer[100], *s; - sprintf(buffer, "%0.5" LONG_DOUBLE_MODIFIER, value); - - s = appconfig_get(root, section, name, buffer); - if(!s) return value; - - return str2ld(s, NULL); -} - -int appconfig_get_boolean(struct config *root, const char *section, const char *name, int value) -{ - char *s; - if(value) s = "yes"; - else s = "no"; - - s = appconfig_get(root, section, name, s); - if(!s) return value; - - if(!strcasecmp(s, "yes") || !strcasecmp(s, "true") || !strcasecmp(s, "on") || !strcasecmp(s, "auto") || !strcasecmp(s, "on demand")) return 1; - return 0; -} - -int appconfig_get_boolean_ondemand(struct config *root, const char *section, const char *name, int value) -{ - char *s; - - if(value == CONFIG_BOOLEAN_AUTO) - s = "auto"; - - else if(value == CONFIG_BOOLEAN_NO) - s = "no"; - - else - s = "yes"; - - s = appconfig_get(root, section, name, s); - if(!s) return value; - - if(!strcmp(s, "yes")) - return CONFIG_BOOLEAN_YES; - else if(!strcmp(s, "no")) - return CONFIG_BOOLEAN_NO; - else if(!strcmp(s, "auto") || !strcmp(s, "on demand")) - return CONFIG_BOOLEAN_AUTO; - - return value; -} - -const char *appconfig_set_default(struct config *root, const char *section, const char *name, const char *value) -{ - struct config_option *cv; - - debug(D_CONFIG, "request to set default config in section '%s', name '%s', value '%s'", section, name, value); - - struct section *co = appconfig_section_find(root, section); - if(!co) return appconfig_set(root, section, name, value); - - cv = appconfig_option_index_find(co, name, 0); - if(!cv) return appconfig_set(root, section, name, value); - - cv->flags |= CONFIG_VALUE_USED; - - if(cv->flags & CONFIG_VALUE_LOADED) - return cv->value; - - if(strcmp(cv->value, value) != 0) { - cv->flags |= CONFIG_VALUE_CHANGED; - - freez(cv->value); - cv->value = strdupz(value); - } - - return cv->value; -} - -const char *appconfig_set(struct config *root, const char *section, const char *name, const char *value) -{ - struct config_option *cv; - - debug(D_CONFIG, "request to set config in section '%s', name '%s', value '%s'", section, name, value); - - struct section *co = appconfig_section_find(root, section); - if(!co) co = appconfig_section_create(root, section); - - cv = appconfig_option_index_find(co, name, 0); - if(!cv) cv = appconfig_value_create(co, name, value); - cv->flags |= CONFIG_VALUE_USED; - - if(strcmp(cv->value, value) != 0) { - cv->flags |= CONFIG_VALUE_CHANGED; - - freez(cv->value); - cv->value = strdupz(value); - } - - return value; -} - -long long appconfig_set_number(struct config *root, const char *section, const char *name, long long value) -{ - char buffer[100]; - sprintf(buffer, "%lld", value); - - appconfig_set(root, section, name, buffer); - - return value; -} - -LONG_DOUBLE appconfig_set_float(struct config *root, const char *section, const char *name, LONG_DOUBLE value) -{ - char buffer[100]; - sprintf(buffer, "%0.5" LONG_DOUBLE_MODIFIER, value); - - appconfig_set(root, section, name, buffer); - - return value; -} - -int appconfig_set_boolean(struct config *root, const char *section, const char *name, int value) -{ - char *s; - if(value) s = "yes"; - else s = "no"; - - appconfig_set(root, section, name, s); - - return value; -} - - -// ---------------------------------------------------------------------------- -// config load/save - -int appconfig_load(struct config *root, char *filename, int overwrite_used) -{ - int line = 0; - struct section *co = NULL; - - char buffer[CONFIG_FILE_LINE_MAX + 1], *s; - - if(!filename) filename = CONFIG_DIR "/" CONFIG_FILENAME; - - debug(D_CONFIG, "CONFIG: opening config file '%s'", filename); - - FILE *fp = fopen(filename, "r"); - if(!fp) { - error("CONFIG: cannot open file '%s'", filename); - return 0; - } - - while(fgets(buffer, CONFIG_FILE_LINE_MAX, fp) != NULL) { - buffer[CONFIG_FILE_LINE_MAX] = '\0'; - line++; - - s = trim(buffer); - if(!s || *s == '#') { - debug(D_CONFIG, "CONFIG: ignoring line %d of file '%s', it is empty.", line, filename); - continue; - } - - int len = (int) strlen(s); - if(*s == '[' && s[len - 1] == ']') { - // new section - s[len - 1] = '\0'; - s++; - - co = appconfig_section_find(root, s); - if(!co) co = appconfig_section_create(root, s); - - continue; - } - - if(!co) { - // line outside a section - error("CONFIG: ignoring line %d ('%s') of file '%s', it is outside all sections.", line, s, filename); - continue; - } - - char *name = s; - char *value = strchr(s, '='); - if(!value) { - error("CONFIG: ignoring line %d ('%s') of file '%s', there is no = in it.", line, s, filename); - continue; - } - *value = '\0'; - value++; - - name = trim(name); - value = trim(value); - - if(!name || *name == '#') { - error("CONFIG: ignoring line %d of file '%s', name is empty.", line, filename); - continue; - } - if(!value) { - debug(D_CONFIG, "CONFIG: ignoring line %d of file '%s', value is empty.", line, filename); - continue; - } - - struct config_option *cv = appconfig_option_index_find(co, name, 0); - - if(!cv) cv = appconfig_value_create(co, name, value); - else { - if(((cv->flags & CONFIG_VALUE_USED) && overwrite_used) || !(cv->flags & CONFIG_VALUE_USED)) { - debug(D_CONFIG, "CONFIG: line %d of file '%s', overwriting '%s/%s'.", line, filename, co->name, cv->name); - freez(cv->value); - cv->value = strdupz(value); - } - else - debug(D_CONFIG, "CONFIG: ignoring line %d of file '%s', '%s/%s' is already present and used.", line, filename, co->name, cv->name); - } - cv->flags |= CONFIG_VALUE_LOADED; - } - - fclose(fp); - - return 1; -} - -void appconfig_generate(struct config *root, BUFFER *wb, int only_changed) -{ - int i, pri; - struct section *co; - struct config_option *cv; - - for(i = 0; i < 3 ;i++) { - switch(i) { - case 0: - buffer_strcat(wb, - "# netdata configuration\n" - "#\n" - "# You can download the latest version of this file, using:\n" - "#\n" - "# wget -O /etc/netdata/netdata.conf http://localhost:19999/netdata.conf\n" - "# or\n" - "# curl -o /etc/netdata/netdata.conf http://localhost:19999/netdata.conf\n" - "#\n" - "# You can uncomment and change any of the options below.\n" - "# The value shown in the commented settings, is the default value.\n" - "#\n" - "\n# global netdata configuration\n"); - break; - - case 1: - buffer_strcat(wb, "\n\n# per plugin configuration\n"); - break; - - case 2: - buffer_strcat(wb, "\n\n# per chart configuration\n"); - break; - } - - appconfig_wrlock(root); - for(co = root->sections; co ; co = co->next) { - if(!strcmp(co->name, CONFIG_SECTION_GLOBAL) - || !strcmp(co->name, CONFIG_SECTION_WEB) - || !strcmp(co->name, CONFIG_SECTION_STATSD) - || !strcmp(co->name, CONFIG_SECTION_PLUGINS) - || !strcmp(co->name, CONFIG_SECTION_REGISTRY) - || !strcmp(co->name, CONFIG_SECTION_HEALTH) - || !strcmp(co->name, CONFIG_SECTION_BACKEND) - || !strcmp(co->name, CONFIG_SECTION_STREAM) - ) - pri = 0; - else if(!strncmp(co->name, "plugin:", 7)) pri = 1; - else pri = 2; - - if(i == pri) { - int loaded = 0; - int used = 0; - int changed = 0; - int count = 0; - - config_section_wrlock(co); - for(cv = co->values; cv ; cv = cv->next) { - used += (cv->flags & CONFIG_VALUE_USED)?1:0; - loaded += (cv->flags & CONFIG_VALUE_LOADED)?1:0; - changed += (cv->flags & CONFIG_VALUE_CHANGED)?1:0; - count++; - } - config_section_unlock(co); - - if(!count) continue; - if(only_changed && !changed && !loaded) continue; - - if(!used) { - buffer_sprintf(wb, "\n# section '%s' is not used.", co->name); - } - - buffer_sprintf(wb, "\n[%s]\n", co->name); - - config_section_wrlock(co); - for(cv = co->values; cv ; cv = cv->next) { - - if(used && !(cv->flags & CONFIG_VALUE_USED)) { - buffer_sprintf(wb, "\n\t# option '%s' is not used.\n", cv->name); - } - buffer_sprintf(wb, "\t%s%s = %s\n", ((!(cv->flags & CONFIG_VALUE_LOADED)) && (!(cv->flags & CONFIG_VALUE_CHANGED)) && (cv->flags & CONFIG_VALUE_USED))?"# ":"", cv->name, cv->value); - } - config_section_unlock(co); - } - } - appconfig_unlock(root); - } -} |