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Diffstat (limited to 'libnetdata/config/appconfig.h')
| -rw-r--r-- | libnetdata/config/appconfig.h | 220 |
1 files changed, 0 insertions, 220 deletions
diff --git a/libnetdata/config/appconfig.h b/libnetdata/config/appconfig.h deleted file mode 100644 index 214a15edd..000000000 --- a/libnetdata/config/appconfig.h +++ /dev/null @@ -1,220 +0,0 @@ -// SPDX-License-Identifier: GPL-3.0-or-later - -/* - * This section manages ini config files, like netdata.conf and stream.conf - * - * It is organized like this: - * - * struct config (i.e. netdata.conf or stream.conf) - * .sections = a linked list of struct section - * .mutex = a mutex to protect the above linked list due to multi-threading - * .index = an AVL tree of struct section - * - * struct section (i.e. [global] or [health] of netdata.conf) - * .value = a linked list of struct config_option - * .mutex = a mutex to protect the above linked list due to multi-threading - * .value_index = an AVL tree of struct config_option - * - * struct config_option (ie. a name-value pair for each ini file option) - * - * The following operations on name-value options are supported: - * SET to set the value of an option - * SET DEFAULT to set the value and the default value of an option - * GET to get the value of an option - * EXISTS to check if an option exists - * MOVE to move an option from a section to another section, and/or rename it - * - * GET and SET operations are provided for the following data types: - * STRING - * NUMBER (long long) - * FLOAT (long double) - * BOOLEAN (false, true) - * BOOLEAN ONDEMAND (false, true, auto) - * - * GET and SET operations create struct config_option, if it is not already present. - * This allows netdata to run even without netdata.conf and stream.conf. The internal - * defaults are used to create the structure that should exist in the ini file and the config - * file can be downloaded from the server. - * - * Also 2 operations are supported for the whole config file: - * - * LOAD To load the ini file from disk - * GENERATE To generate the ini file (this is used to download the ini file from the server) - * - * For each option (name-value pair), the system maintains 4 flags: - * LOADED to indicate that the value has been loaded from the file - * USED to indicate that netdata used the value - * CHANGED to indicate that the value has been changed from the loaded value or the internal default value - * CHECKED is used internally for optimization (to avoid an strcmp() every time GET is called). - * - * TODO: - * 1. The linked lists and the mutexes can be removed and the AVL trees can become DICTIONARY. - * This part of the code was written before we add traversal to AVL. - * - * 2. High level data types could be supported, to simplify the rest of the code: - * MULTIPLE CHOICE to let the user select one of the supported keywords - * this would allow users see in comments the available options - * - * SIMPLE PATTERN to let the user define netdata SIMPLE PATTERNS - * - * 3. Sorting of options should be supported. - * Today, when the ini file is downloaded from the server, the options are shown in the order - * they appear in the linked list (the order they were added, listing changed options first). - * If we remove the linked list, the order they appear in the AVL tree will be used (which is - * random due to simple_hash()). - * Ideally, we support sorting of options when generating the ini file. - * - * 4. There is no free() operation. So, memory is freed on netdata exit. - * - * 5. Avoid memory fragmentation - * Since entries are created from multiple threads and a lot of allocations are required - * for each config_option, fragmentation can be a problem for IoT. - * - * 6. Although this way of managing options is quite flexible and dynamic, it wastes memory - * for the names of the options. Since most of the option names are static, we could provide - * a method to allocate only the dynamic option names. - */ - -#ifndef NETDATA_CONFIG_H -#define NETDATA_CONFIG_H 1 - -#include "../libnetdata.h" - -#define CONFIG_FILENAME "netdata.conf" - -#define CONFIG_SECTION_GLOBAL "global" -#define CONFIG_SECTION_DIRECTORIES "directories" -#define CONFIG_SECTION_LOGS "logs" -#define CONFIG_SECTION_ENV_VARS "environment variables" -#define CONFIG_SECTION_SQLITE "sqlite" -#define CONFIG_SECTION_WEB "web" -#define CONFIG_SECTION_WEBRTC "webrtc" -#define CONFIG_SECTION_STATSD "statsd" -#define CONFIG_SECTION_PLUGINS "plugins" -#define CONFIG_SECTION_CLOUD "cloud" -#define CONFIG_SECTION_REGISTRY "registry" -#define CONFIG_SECTION_HEALTH "health" -#define CONFIG_SECTION_STREAM "stream" -#define CONFIG_SECTION_ML "ml" -#define CONFIG_SECTION_EXPORTING "exporting:global" -#define CONFIG_SECTION_PROMETHEUS "prometheus:exporter" -#define CONFIG_SECTION_HOST_LABEL "host labels" -#define EXPORTING_CONF "exporting.conf" -#define CONFIG_SECTION_GLOBAL_STATISTICS "global statistics" -#define CONFIG_SECTION_DB "db" - - -// these are used to limit the configuration names and values lengths -// they are not enforced by config.c functions (they will strdup() all strings, no matter of their length) -#define CONFIG_MAX_NAME 1024 -#define CONFIG_MAX_VALUE 2048 - -// ---------------------------------------------------------------------------- -// Config definitions -#define CONFIG_FILE_LINE_MAX ((CONFIG_MAX_NAME + CONFIG_MAX_VALUE + 1024) * 2) - -#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 or the internal default value -#define CONFIG_VALUE_CHECKED 0x08 // has been checked if the value is different from the default - -struct config_option { - avl_t avl_node; // the index entry of this entry - 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_t avl_node; // the index entry of this section - this has to be first! - - 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; // global 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 -}; - -struct config { - struct section *first_section; - struct section *last_section; // optimize inserting at the end - netdata_mutex_t mutex; - avl_tree_lock index; -}; - -#define CONFIG_BOOLEAN_INVALID 100 // an invalid value to check for validity (used as default initialization when needed) - -#define CONFIG_BOOLEAN_NO 0 // disabled -#define CONFIG_BOOLEAN_YES 1 // enabled - -#ifndef CONFIG_BOOLEAN_AUTO -#define CONFIG_BOOLEAN_AUTO 2 // enabled if it has useful info when enabled -#endif - -int appconfig_load(struct config *root, char *filename, int overwrite_used, const char *section_name); -void config_section_wrlock(struct section *co); -void config_section_unlock(struct section *co); - -char *appconfig_get_by_section(struct section *co, const char *name, const char *default_value); -char *appconfig_get(struct config *root, const char *section, const char *name, const char *default_value); -long long appconfig_get_number(struct config *root, const char *section, const char *name, long long value); -NETDATA_DOUBLE appconfig_get_float(struct config *root, const char *section, const char *name, NETDATA_DOUBLE value); -int appconfig_get_boolean_by_section(struct section *co, const char *name, int value); -int appconfig_get_boolean(struct config *root, const char *section, const char *name, int value); -int appconfig_get_boolean_ondemand(struct config *root, const char *section, const char *name, int value); -int appconfig_get_duration(struct config *root, const char *section, const char *name, const char *value); - -const char *appconfig_set(struct config *root, const char *section, const char *name, const char *value); -const char *appconfig_set_default(struct config *root, const char *section, const char *name, const char *value); -long long appconfig_set_number(struct config *root, const char *section, const char *name, long long value); -NETDATA_DOUBLE appconfig_set_float(struct config *root, const char *section, const char *name, NETDATA_DOUBLE value); -int appconfig_set_boolean(struct config *root, const char *section, const char *name, int value); - -int appconfig_exists(struct config *root, const char *section, const char *name); -int appconfig_move(struct config *root, const char *section_old, const char *name_old, const char *section_new, const char *name_new); - -void appconfig_generate(struct config *root, BUFFER *wb, int only_changed); - -int appconfig_section_compare(void *a, void *b); - -void appconfig_section_destroy_non_loaded(struct config *root, const char *section); -void appconfig_section_option_destroy_non_loaded(struct config *root, const char *section, const char *name); - -int config_parse_duration(const char* string, int* result); - -struct section *appconfig_get_section(struct config *root, const char *name); - -void appconfig_wrlock(struct config *root); -void appconfig_unlock(struct config *root); - -int appconfig_test_boolean_value(char *s); - -struct connector_instance { - char instance_name[CONFIG_MAX_NAME + 1]; - char connector_name[CONFIG_MAX_NAME + 1]; -}; - -typedef struct _connector_instance { - struct section *connector; // actual connector - struct section *instance; // This instance - char instance_name[CONFIG_MAX_NAME + 1]; - char connector_name[CONFIG_MAX_NAME + 1]; - struct _connector_instance *next; // Next instance -} _CONNECTOR_INSTANCE; - -_CONNECTOR_INSTANCE *add_connector_instance(struct section *connector, struct section *instance); - -#endif /* NETDATA_CONFIG_H */
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