-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include <pthread.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "avl.h"
#include "common.h"
-#include "appconfig.h"
-#include "log.h"
#define CONFIG_FILE_LINE_MAX ((CONFIG_MAX_NAME + CONFIG_MAX_VALUE + 1024) * 2)
-pthread_rwlock_t config_rwlock = PTHREAD_RWLOCK_INITIALIZER;
-
// ----------------------------------------------------------------------------
// definitions
#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_value {
- avl avl; // the index - 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
+struct config_option {
+ avl avl; // the index - this has to be first!
- char *name;
- char *value;
+ 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
- uint8_t flags;
+ char *name;
+ char *value;
- struct config_value *next;
+ struct config_option *next; // config->mutex protects just this
};
-struct config {
- avl avl;
+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
+ 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 *name;
- struct config_value *values;
- avl_tree values_index;
+ struct section *next; // gloabl config_mutex protects just this
- struct config *next;
+ struct config_option *values;
+ avl_tree_lock values_index;
- pthread_rwlock_t rwlock;
-} *config_root = NULL;
+ 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);
-// ----------------------------------------------------------------------------
-// config value
+struct config netdata_config = {
+ .sections = NULL,
+ .mutex = NETDATA_MUTEX_INITIALIZER,
+ .index = {
+ { NULL, appconfig_section_compare },
+ AVL_LOCK_INITIALIZER
+ }
+};
-static int config_value_iterator(avl *a) { if(a) {}; return 0; }
+struct config stream_config = {
+ .sections = NULL,
+ .mutex = NETDATA_MUTEX_INITIALIZER,
+ .index = {
+ { NULL, appconfig_section_compare },
+ AVL_LOCK_INITIALIZER
+ }
+};
-static int config_value_compare(void* a, void* b) {
- if(((struct config_value *)a)->hash < ((struct config_value *)b)->hash) return -1;
- else if(((struct config_value *)a)->hash > ((struct config_value *)b)->hash) return 1;
- else return strcmp(((struct config_value *)a)->name, ((struct config_value *)b)->name);
+// ----------------------------------------------------------------------------
+// locking
+
+static inline void appconfig_wrlock(struct config *root) {
+ netdata_mutex_lock(&root->mutex);
}
-#define config_value_index_add(co, cv) avl_insert(&((co)->values_index), (avl *)(cv))
-#define config_value_index_del(co, cv) avl_remove(&((co)->values_index), (avl *)(cv))
+static inline void appconfig_unlock(struct config *root) {
+ netdata_mutex_unlock(&root->mutex);
+}
-static struct config_value *config_value_index_find(struct config *co, const char *name, uint32_t hash) {
- struct config_value *result = NULL, tmp;
- tmp.hash = (hash)?hash:simple_hash(name);
- tmp.name = (char *)name;
+static inline void config_section_wrlock(struct section *co) {
+ netdata_mutex_lock(&co->mutex);
+}
- avl_search(&(co->values_index), (avl *)&tmp, config_value_iterator, (avl **)&result);
- return result;
+static inline void config_section_unlock(struct section *co) {
+ netdata_mutex_unlock(&co->mutex);
}
+
// ----------------------------------------------------------------------------
-// config
+// config name-value index
-static int config_iterator(avl *a) { if(a) {}; return 0; }
+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;
-static int config_compare(void* a, void* b) {
- if(((struct config *)a)->hash < ((struct config *)b)->hash) return -1;
- else if(((struct config *)a)->hash > ((struct config *)b)->hash) return 1;
- else return strcmp(((struct config *)a)->name, ((struct config *)b)->name);
+ return (struct config_option *)avl_search_lock(&(co->values_index), (avl *) &tmp);
}
-avl_tree config_root_index = {
- NULL,
- config_compare,
-#ifdef AVL_LOCK_WITH_MUTEX
- PTHREAD_MUTEX_INITIALIZER
-#else
- PTHREAD_RWLOCK_INITIALIZER
-#endif
-};
-#define config_index_add(cfg) avl_insert(&config_root_index, (avl *)(cfg))
-#define config_index_del(cfg) avl_remove(&config_root_index, (avl *)(cfg))
+// ----------------------------------------------------------------------------
+// config sections index
-static struct config *config_index_find(const char *name, uint32_t hash) {
- struct config *result = NULL, tmp;
- tmp.hash = (hash)?hash:simple_hash(name);
- tmp.name = (char *)name;
+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);
+}
- avl_search(&config_root_index, (avl *)&tmp, config_iterator, (avl **)&result);
- return result;
+#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);
}
-struct config_value *config_value_create(struct config *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_value *cv = calloc(1, sizeof(struct config_value));
- if(!cv) fatal("Cannot allocate config_value");
+// ----------------------------------------------------------------------------
+// config section methods
- cv->name = strdup(name);
- if(!cv->name) fatal("Cannot allocate config.name");
- cv->hash = simple_hash(cv->name);
+static inline struct section *appconfig_section_find(struct config *root, const char *section) {
+ return appconfig_index_find(root, section, 0);
+}
- cv->value = strdup(value);
- if(!cv->value) fatal("Cannot allocate config.value");
+static inline struct section *appconfig_section_create(struct config *root, const char *section) {
+ debug(D_CONFIG, "Creating section '%s'.", section);
- config_value_index_add(co, cv);
+ struct section *co = callocz(1, sizeof(struct section));
+ co->name = strdupz(section);
+ co->hash = simple_hash(co->name);
- // no need for string termination, due to calloc()
+ avl_init_lock(&co->values_index, appconfig_option_compare);
- pthread_rwlock_wrlock(&co->rwlock);
+ if(unlikely(appconfig_index_add(root, co) != co))
+ error("INTERNAL ERROR: indexing of section '%s', already exists.", co->name);
- struct config_value *cv2 = co->values;
- if(cv2) {
- while (cv2->next) cv2 = cv2->next;
- cv2->next = cv;
- }
- else co->values = cv;
+ 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;
+}
- pthread_rwlock_unlock(&co->rwlock);
- return cv;
+// ----------------------------------------------------------------------------
+// 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;
}
-struct config *config_create(const char *section)
-{
- debug(D_CONFIG, "Creating section '%s'.", section);
+int appconfig_exists(struct config *root, const char *section, const char *name) {
+ struct config_option *cv;
- struct config *co = calloc(1, sizeof(struct config));
- if(!co) fatal("Cannot allocate config");
+ debug(D_CONFIG, "request to get config in section '%s', name '%s'", section, name);
- co->name = strdup(section);
- if(!co->name) fatal("Cannot allocate config.name");
- co->hash = simple_hash(co->name);
+ struct section *co = appconfig_section_find(root, section);
+ if(!co) return 0;
- pthread_rwlock_init(&co->rwlock, NULL);
- avl_init(&co->values_index, config_value_compare);
+ cv = appconfig_option_index_find(co, name, 0);
+ if(!cv) return 0;
- config_index_add(co);
+ return 1;
+}
- // no need for string termination, due to calloc()
+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;
- pthread_rwlock_wrlock(&config_rwlock);
+ 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 config *co2 = config_root;
- if(co2) {
- while (co2->next) co2 = co2->next;
- co2->next = co;
- }
- else config_root = co;
+ struct section *co_old = appconfig_section_find(root, section_old);
+ if(!co_old) return ret;
- pthread_rwlock_unlock(&config_rwlock);
+ struct section *co_new = appconfig_section_find(root, section_new);
+ if(!co_new) co_new = appconfig_section_create(root, section_new);
- return co;
-}
+ config_section_wrlock(co_old);
+ config_section_wrlock(co_new);
-struct config *config_find_section(const char *section)
-{
- return config_index_find(section, 0);
-}
+ cv_old = appconfig_option_index_find(co_old, name_old, 0);
+ if(!cv_old) goto cleanup;
-int load_config(char *filename, int overwrite_used)
-{
- int line = 0;
- struct config *co = NULL;
-
- char buffer[CONFIG_FILE_LINE_MAX + 1], *s;
-
- if(!filename) filename = CONFIG_DIR "/" CONFIG_FILENAME;
- FILE *fp = fopen(filename, "r");
- if(!fp) {
- error("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) {
- debug(D_CONFIG, "Ignoring line %d, it is empty.", line);
- continue;
- }
-
- int len = (int) strlen(s);
- if(*s == '[' && s[len - 1] == ']') {
- // new section
- s[len - 1] = '\0';
- s++;
-
- co = config_find_section(s);
- if(!co) co = config_create(s);
-
- continue;
- }
-
- if(!co) {
- // line outside a section
- error("Ignoring line %d ('%s'), it is outside all sections.", line, s);
- continue;
- }
-
- char *name = s;
- char *value = strchr(s, '=');
- if(!value) {
- error("Ignoring line %d ('%s'), there is no = in it.", line, s);
- continue;
- }
- *value = '\0';
- value++;
-
- name = trim(name);
- value = trim(value);
-
- if(!name) {
- error("Ignoring line %d, name is empty.", line);
- continue;
- }
- if(!value) {
- debug(D_CONFIG, "Ignoring line %d, value is empty.", line);
- continue;
- }
-
- struct config_value *cv = config_value_index_find(co, name, 0);
-
- if(!cv) cv = config_value_create(co, name, value);
- else {
- if(((cv->flags & CONFIG_VALUE_USED) && overwrite_used) || !(cv->flags & CONFIG_VALUE_USED)) {
- debug(D_CONFIG, "Overwriting '%s/%s'.", line, co->name, cv->name);
- free(cv->value);
- cv->value = strdup(value);
- if(!cv->value) fatal("Cannot allocate config.value");
- }
- else
- debug(D_CONFIG, "Ignoring line %d, '%s/%s' is already present and used.", line, co->name, cv->name);
- }
- cv->flags |= CONFIG_VALUE_LOADED;
- }
-
- fclose(fp);
-
- return 1;
+ 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:
+ config_section_unlock(co_new);
+ config_section_unlock(co_old);
+ return ret;
}
-char *config_get(const char *section, const char *name, const char *default_value)
+char *appconfig_get(struct config *root, const char *section, const char *name, const char *default_value)
{
- struct config_value *cv;
-
- debug(D_CONFIG, "request to get config in section '%s', name '%s', default_value '%s'", section, name, default_value);
-
- struct config *co = config_find_section(section);
- if(!co) co = config_create(section);
-
- cv = config_value_index_find(co, name, 0);
- if(!cv) {
- cv = config_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);
+ 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 config_get_number(const char *section, const char *name, long long 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);
+ char buffer[100], *s;
+ sprintf(buffer, "%lld", value);
- s = config_get(section, name, buffer);
- if(!s) return value;
+ s = appconfig_get(root, section, name, buffer);
+ if(!s) return value;
- return strtoll(s, NULL, 0);
+ return strtoll(s, NULL, 0);
}
-int config_get_boolean(const char *section, const char *name, int value)
+int appconfig_get_boolean(struct config *root, const char *section, const char *name, int value)
{
- char *s;
- if(value) s = "yes";
- else s = "no";
+ char *s;
+ if(value) s = "yes";
+ else s = "no";
- s = config_get(section, name, s);
- if(!s) return value;
+ s = appconfig_get(root, section, name, s);
+ if(!s) return value;
- if(!strcmp(s, "yes")) return 1;
- else return 0;
+ if(!strcmp(s, "yes") || !strcmp(s, "auto") || !strcmp(s, "on demand")) return 1;
+ return 0;
}
-int config_get_boolean_ondemand(const char *section, const char *name, int value)
+int appconfig_get_boolean_ondemand(struct config *root, const char *section, const char *name, int value)
{
- char *s;
+ char *s;
- if(value == CONFIG_ONDEMAND_ONDEMAND)
- s = "on demand";
+ if(value == CONFIG_BOOLEAN_AUTO)
+ s = "auto";
- else if(value == CONFIG_ONDEMAND_NO)
- s = "no";
+ else if(value == CONFIG_BOOLEAN_NO)
+ s = "no";
- else
- s = "yes";
+ else
+ s = "yes";
- s = config_get(section, name, s);
- if(!s) return value;
+ s = appconfig_get(root, section, name, s);
+ if(!s) return value;
- if(!strcmp(s, "yes"))
- return CONFIG_ONDEMAND_YES;
- else if(!strcmp(s, "no"))
- return CONFIG_ONDEMAND_NO;
- else if(!strcmp(s, "on demand"))
- return CONFIG_ONDEMAND_ONDEMAND;
+ 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;
+ return value;
}
-const char *config_set_default(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)
{
- struct config_value *cv;
+ struct config_option *cv;
- debug(D_CONFIG, "request to set config in section '%s', name '%s', value '%s'", section, name, value);
+ debug(D_CONFIG, "request to set default config in section '%s', name '%s', value '%s'", section, name, value);
- struct config *co = config_find_section(section);
- if(!co) return config_set(section, name, value);
+ struct section *co = appconfig_section_find(root, section);
+ if(!co) return appconfig_set(root, section, name, value);
- cv = config_value_index_find(co, name, 0);
- if(!cv) return config_set(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;
+ cv->flags |= CONFIG_VALUE_USED;
- if(cv->flags & CONFIG_VALUE_LOADED)
- return cv->value;
+ if(cv->flags & CONFIG_VALUE_LOADED)
+ return cv->value;
- if(strcmp(cv->value, value) != 0) {
- cv->flags |= CONFIG_VALUE_CHANGED;
+ if(strcmp(cv->value, value) != 0) {
+ cv->flags |= CONFIG_VALUE_CHANGED;
- free(cv->value);
- cv->value = strdup(value);
- if(!cv->value) fatal("Cannot allocate config.value");
- }
+ freez(cv->value);
+ cv->value = strdupz(value);
+ }
- return cv->value;
+ return cv->value;
}
-const char *config_set(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)
{
- struct config_value *cv;
+ struct config_option *cv;
- debug(D_CONFIG, "request to set config in section '%s', name '%s', value '%s'", section, name, value);
+ debug(D_CONFIG, "request to set config in section '%s', name '%s', value '%s'", section, name, value);
- struct config *co = config_find_section(section);
- if(!co) co = config_create(section);
+ struct section *co = appconfig_section_find(root, section);
+ if(!co) co = appconfig_section_create(root, section);
- cv = config_value_index_find(co, name, 0);
- if(!cv) cv = config_value_create(co, name, value);
- cv->flags |= CONFIG_VALUE_USED;
+ 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;
+ if(strcmp(cv->value, value) != 0) {
+ cv->flags |= CONFIG_VALUE_CHANGED;
- free(cv->value);
- cv->value = strdup(value);
- if(!cv->value) fatal("Cannot allocate config.value");
- }
+ freez(cv->value);
+ cv->value = strdupz(value);
+ }
- return value;
+ return value;
}
-long long config_set_number(const char *section, const char *name, long long 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);
+ char buffer[100];
+ sprintf(buffer, "%lld", value);
- config_set(section, name, buffer);
+ appconfig_set(root, section, name, buffer);
- return value;
+ return value;
}
-int config_set_boolean(const char *section, const char *name, int 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";
+ char *s;
+ if(value) s = "yes";
+ else s = "no";
- config_set(section, name, s);
+ appconfig_set(root, section, name, s);
- return value;
+ return value;
}
-void generate_config(BUFFER *wb, int only_changed)
+
+// ----------------------------------------------------------------------------
+// config load/save
+
+int appconfig_load(struct config *root, char *filename, int overwrite_used)
{
- int i, pri;
- struct config *co;
- struct config_value *cv;
-
- for(i = 0; i < 3 ;i++) {
- switch(i) {
- case 0:
- buffer_strcat(wb,
- "# NetData Configuration\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# 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;
- }
-
- pthread_rwlock_wrlock(&config_rwlock);
- for(co = config_root; co ; co = co->next) {
- if(strcmp(co->name, "global") == 0 || strcmp(co->name, "plugins") == 0) pri = 0;
- else if(strncmp(co->name, "plugin:", 7) == 0) pri = 1;
- else pri = 2;
-
- if(i == pri) {
- int used = 0;
- int changed = 0;
- int count = 0;
-
- pthread_rwlock_wrlock(&co->rwlock);
-
- for(cv = co->values; cv ; cv = cv->next) {
- used += (cv->flags && CONFIG_VALUE_USED)?1:0;
- changed += (cv->flags & CONFIG_VALUE_CHANGED)?1:0;
- count++;
- }
-
- pthread_rwlock_unlock(&co->rwlock);
-
- if(!count) continue;
- if(only_changed && !changed) continue;
-
- if(!used) {
- buffer_sprintf(wb, "\n# node '%s' is not used.", co->name);
- }
-
- buffer_sprintf(wb, "\n[%s]\n", co->name);
-
- pthread_rwlock_wrlock(&co->rwlock);
- 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_CHANGED)) && (cv->flags & CONFIG_VALUE_USED))?"# ":"", cv->name, cv->value);
- }
- pthread_rwlock_unlock(&co->rwlock);
- }
- }
- pthread_rwlock_unlock(&config_rwlock);
- }
+ 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, "Opening config file '%s'", filename);
+
+ FILE *fp = fopen(filename, "r");
+ if(!fp) {
+ error("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) {
+ debug(D_CONFIG, "Ignoring line %d, it is empty.", line);
+ 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("Ignoring line %d ('%s'), it is outside all sections.", line, s);
+ continue;
+ }
+
+ char *name = s;
+ char *value = strchr(s, '=');
+ if(!value) {
+ error("Ignoring line %d ('%s'), there is no = in it.", line, s);
+ continue;
+ }
+ *value = '\0';
+ value++;
+
+ name = trim(name);
+ value = trim(value);
+
+ if(!name) {
+ error("Ignoring line %d, name is empty.", line);
+ continue;
+ }
+ if(!value) {
+ debug(D_CONFIG, "Ignoring line %d, value is empty.", line);
+ 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, "Line %d, overwriting '%s/%s'.", line, co->name, cv->name);
+ freez(cv->value);
+ cv->value = strdupz(value);
+ }
+ else
+ debug(D_CONFIG, "Ignoring line %d, '%s/%s' is already present and used.", line, 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_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 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;
+ changed += (cv->flags & CONFIG_VALUE_CHANGED)?1:0;
+ count++;
+ }
+ config_section_unlock(co);
+
+ if(!count) continue;
+ if(only_changed && !changed) 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_CHANGED)) && (cv->flags & CONFIG_VALUE_USED))?"# ":"", cv->name, cv->value);
+ }
+ config_section_unlock(co);
+ }
+ }
+ appconfig_unlock(root);
+ }
+}
projects / netdata.git / blobdiff