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-rw-r--r--libnetdata/config/Makefile.in519
-rw-r--r--libnetdata/config/README.md5
-rw-r--r--libnetdata/config/appconfig.c334
-rw-r--r--libnetdata/config/appconfig.h92
4 files changed, 359 insertions, 591 deletions
diff --git a/libnetdata/config/Makefile.in b/libnetdata/config/Makefile.in
deleted file mode 100644
index 3ec6a5d81..000000000
--- a/libnetdata/config/Makefile.in
+++ /dev/null
@@ -1,519 +0,0 @@
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-.PRECIOUS: Makefile
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diff --git a/libnetdata/config/README.md b/libnetdata/config/README.md
index 51216b6db..a71f1ee18 100644
--- a/libnetdata/config/README.md
+++ b/libnetdata/config/README.md
@@ -1,3 +1,8 @@
+<!--
+title: "Netdata ini config files"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/libnetdata/config/README.md
+-->
+
# Netdata ini config files
Configuration files `netdata.conf` and `stream.conf` are Netdata ini files.
diff --git a/libnetdata/config/appconfig.c b/libnetdata/config/appconfig.c
index 65c36c281..d9dcde71a 100644
--- a/libnetdata/config/appconfig.c
+++ b/libnetdata/config/appconfig.c
@@ -2,63 +2,114 @@
#include "../libnetdata.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 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 avl; // 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
-};
+/*
+ * @Input:
+ * Connector / instance to add to an internal structure
+ * @Return
+ * The current head of the linked list of connector_instance
+ *
+ */
-struct section {
- avl avl; // the index entry of this section - this has to be first!
+_CONNECTOR_INSTANCE *add_connector_instance(struct section *connector, struct section *instance)
+{
+ static struct _connector_instance *global_connector_instance = NULL;
+ struct _connector_instance *local_ci, *local_ci_tmp;
+
+ if (unlikely(!connector)) {
+ if (unlikely(!instance))
+ return global_connector_instance;
+
+ local_ci = global_connector_instance;
+ while (local_ci) {
+ local_ci_tmp = local_ci->next;
+ freez(local_ci);
+ local_ci = local_ci_tmp;
+ }
+ global_connector_instance = NULL;
+ return NULL;
+ }
- 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
+ local_ci = callocz(1, sizeof(struct _connector_instance));
+ local_ci->instance = instance;
+ local_ci->connector = connector;
+ strncpy(local_ci->instance_name, instance->name, CONFIG_MAX_NAME);
+ strncpy(local_ci->connector_name, connector->name, CONFIG_MAX_NAME);
+ local_ci->next = global_connector_instance;
+ global_connector_instance = local_ci;
- char *name;
+ return global_connector_instance;
+}
- struct section *next; // gloabl config_mutex protects just this
+int is_valid_connector(char *type, int check_reserved)
+{
+ int rc = 1;
- struct config_option *values;
- avl_tree_lock values_index;
+ if (unlikely(!type))
+ return 0;
- netdata_mutex_t mutex; // this locks only the writers, to ensure atomic updates
- // readers are protected using the rwlock in avl_tree_lock
-};
+ if (!check_reserved) {
+ if (unlikely(is_valid_connector(type,1))) {
+ return 0;
+ }
+ //if (unlikely(*type == ':')
+ // return 0;
+ char *separator = strrchr(type, ':');
+ if (likely(separator)) {
+ *separator = '\0';
+ rc = separator - type;
+ } else
+ return 0;
+ }
+// else {
+// if (unlikely(is_valid_connector(type,1))) {
+// error("Section %s invalid -- reserved name", type);
+// return 0;
+// }
+// }
+
+ if (!strcmp(type, "graphite") || !strcmp(type, "graphite:plaintext")) {
+ return rc;
+ } else if (!strcmp(type, "graphite:http") || !strcmp(type, "graphite:https")) {
+ return rc;
+ } else if (!strcmp(type, "json") || !strcmp(type, "json:plaintext")) {
+ return rc;
+ } else if (!strcmp(type, "json:http") || !strcmp(type, "json:https")) {
+ return rc;
+ } else if (!strcmp(type, "opentsdb") || !strcmp(type, "opentsdb:telnet")) {
+ return rc;
+ } else if (!strcmp(type, "opentsdb:http") || !strcmp(type, "opentsdb:https")) {
+ return rc;
+ } else if (!strcmp(type, "prometheus_remote_write")) {
+ return rc;
+ } else if (!strcmp(type, "prometheus_remote_write:http") || !strcmp(type, "prometheus_remote_write:https")) {
+ return rc;
+ } else if (!strcmp(type, "kinesis") || !strcmp(type, "kinesis:plaintext")) {
+ return rc;
+ } else if (!strcmp(type, "pubsub") || !strcmp(type, "pubsub:plaintext")) {
+ return rc;
+ } else if (!strcmp(type, "mongodb") || !strcmp(type, "mongodb:plaintext")) {
+ return rc;
+ }
+ return 0;
+}
// ----------------------------------------------------------------------------
// locking
-static inline void appconfig_wrlock(struct config *root) {
+inline void appconfig_wrlock(struct config *root) {
netdata_mutex_lock(&root->mutex);
}
-static inline void appconfig_unlock(struct config *root) {
+inline void appconfig_unlock(struct config *root) {
netdata_mutex_unlock(&root->mutex);
}
-static inline void config_section_wrlock(struct section *co) {
+inline void config_section_wrlock(struct section *co) {
netdata_mutex_lock(&co->mutex);
}
-static inline void config_section_unlock(struct section *co) {
+inline void config_section_unlock(struct section *co) {
netdata_mutex_unlock(&co->mutex);
}
@@ -126,17 +177,61 @@ static inline struct section *appconfig_section_create(struct config *root, cons
error("INTERNAL ERROR: indexing of section '%s', already exists.", co->name);
appconfig_wrlock(root);
- struct section *co2 = root->sections;
+ struct section *co2 = root->last_section;
if(co2) {
- while (co2->next) co2 = co2->next;
co2->next = co;
+ } else {
+ root->first_section = co;
}
- else root->sections = co;
+ root->last_section = co;
appconfig_unlock(root);
return co;
}
+void appconfig_section_destroy_non_loaded(struct config *root, const char *section)
+{
+ struct section *co;
+ struct config_option *cv, *cv_next;
+
+ debug(D_CONFIG, "Destroying section '%s'.", section);
+
+ co = appconfig_section_find(root, section);
+ if(!co) {
+ error("Could not destroy section '%s'. Not found.", section);
+ return;
+ }
+
+ config_section_wrlock(co);
+ for(cv = co->values; cv ; cv = cv->next) {
+ if (cv->flags & CONFIG_VALUE_LOADED) {
+ /* Do not destroy values that were loaded from the configuration files. */
+ config_section_unlock(co);
+ return;
+ }
+ }
+ for(cv = co->values ; cv ; cv = cv_next) {
+ cv_next = cv->next;
+ if(unlikely(!appconfig_option_index_del(co, cv)))
+ error("Cannot remove config option '%s' from section '%s'.", cv->name, co->name);
+ freez(cv->value);
+ freez(cv->name);
+ freez(cv);
+ }
+ co->values = NULL;
+ config_section_unlock(co);
+
+ if (unlikely(!appconfig_index_del(root, co))) {
+ error("Cannot remove section '%s' from config.", section);
+ return;
+ }
+
+ avl_destroy_lock(&co->values_index);
+ freez(co->name);
+ pthread_mutex_destroy(&co->mutex);
+ freez(co);
+}
+
// ----------------------------------------------------------------------------
// config name-value methods
@@ -241,27 +336,25 @@ cleanup:
return ret;
}
-char *appconfig_get(struct config *root, const char *section, const char *name, const char *default_value)
+char *appconfig_get_by_section(struct section *co, 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);
-
+ // Only calls internal to this file check for a NULL result and they do not supply a NULL arg.
+ // External caller should treat NULL as an error case.
cv = appconfig_option_index_find(co, name, 0);
- if(!cv) {
+ if (!cv) {
+ if (!default_value) return NULL;
cv = appconfig_value_create(co, name, default_value);
- if(!cv) return NULL;
+ 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 it is different than the default, mark it
if(!(cv->flags & CONFIG_VALUE_CHECKED)) {
- if(strcmp(cv->value, default_value) != 0) cv->flags |= CONFIG_VALUE_CHANGED;
+ if(default_value && strcmp(cv->value, default_value) != 0) cv->flags |= CONFIG_VALUE_CHANGED;
cv->flags |= CONFIG_VALUE_CHECKED;
}
}
@@ -269,6 +362,22 @@ char *appconfig_get(struct config *root, const char *section, const char *name,
return(cv->value);
}
+
+char *appconfig_get(struct config *root, const char *section, const char *name, const char *default_value)
+{
+ if (default_value == NULL)
+ debug(D_CONFIG, "request to get config in section '%s', name '%s' or fail", section, name);
+ else
+ 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 && !default_value)
+ return NULL;
+ if(!co) co = appconfig_section_create(root, section);
+
+ return appconfig_get_by_section(co, name, default_value);
+}
+
long long appconfig_get_number(struct config *root, const char *section, const char *name, long long value)
{
char buffer[100], *s;
@@ -291,6 +400,23 @@ LONG_DOUBLE appconfig_get_float(struct config *root, const char *section, const
return str2ld(s, NULL);
}
+static inline int appconfig_test_boolean_value(char *s) {
+ 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_by_section(struct section *co, const char *name, int value) {
+ char *s;
+
+ s = appconfig_get_by_section(co, name, (!value)?"no":"yes");
+ if(!s) return value;
+
+ return appconfig_test_boolean_value(s);
+}
+
int appconfig_get_boolean(struct config *root, const char *section, const char *name, int value)
{
char *s;
@@ -300,8 +426,7 @@ int appconfig_get_boolean(struct config *root, const char *section, const char *
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;
+ return appconfig_test_boolean_value(s);
}
int appconfig_get_boolean_ondemand(struct config *root, const char *section, const char *name, int value)
@@ -436,10 +561,16 @@ int appconfig_get_duration(struct config *root, const char *section, const char
// ----------------------------------------------------------------------------
// config load/save
-int appconfig_load(struct config *root, char *filename, int overwrite_used)
+int appconfig_load(struct config *root, char *filename, int overwrite_used, const char *section_name)
{
int line = 0;
struct section *co = NULL;
+ int is_exporter_config = 0;
+ int _backends = 0; // number of backend sections we have
+ char working_instance[CONFIG_MAX_NAME + 1];
+ char working_connector[CONFIG_MAX_NAME + 1];
+ struct section *working_connector_section = NULL;
+ int global_exporting_section = 0;
char buffer[CONFIG_FILE_LINE_MAX + 1], *s;
@@ -453,6 +584,12 @@ int appconfig_load(struct config *root, char *filename, int overwrite_used)
return 0;
}
+ uint32_t section_hash = 0;
+ if(section_name) {
+ section_hash = simple_hash(section_name);
+ }
+ is_exporter_config = (strstr(filename, EXPORTING_CONF) != NULL);
+
while(fgets(buffer, CONFIG_FILE_LINE_MAX, fp) != NULL) {
buffer[CONFIG_FILE_LINE_MAX] = '\0';
line++;
@@ -469,9 +606,57 @@ int appconfig_load(struct config *root, char *filename, int overwrite_used)
s[len - 1] = '\0';
s++;
+ if (is_exporter_config) {
+ global_exporting_section =
+ !(strcmp(s, CONFIG_SECTION_EXPORTING)) || !(strcmp(s, CONFIG_SECTION_PROMETHEUS));
+ if (unlikely(!global_exporting_section)) {
+ int rc;
+ rc = is_valid_connector(s, 0);
+ if (likely(rc)) {
+ strncpy(working_connector, s, CONFIG_MAX_NAME);
+ s = s + rc + 1;
+ if (unlikely(!(*s))) {
+ _backends++;
+ sprintf(buffer, "instance_%d", _backends);
+ s = buffer;
+ }
+ strncpy(working_instance, s, CONFIG_MAX_NAME);
+ working_connector_section = NULL;
+ if (unlikely(appconfig_section_find(root, working_instance))) {
+ error("Instance (%s) already exists", working_instance);
+ co = NULL;
+ continue;
+ }
+ } else {
+ co = NULL;
+ error("Section (%s) does not specify a valid connector", s);
+ continue;
+ }
+ }
+ }
+
co = appconfig_section_find(root, s);
if(!co) co = appconfig_section_create(root, s);
+ if(co && section_name && overwrite_used && section_hash == co->hash && !strcmp(section_name, co->name)) {
+ config_section_wrlock(co);
+ struct config_option *cv2 = co->values;
+ while (cv2) {
+ struct config_option *save = cv2->next;
+ struct config_option *found = appconfig_option_index_del(co, cv2);
+ if(found != cv2)
+ error("INTERNAL ERROR: Cannot remove '%s' from section '%s', it was not inserted before.",
+ cv2->name, co->name);
+
+ freez(cv2->name);
+ freez(cv2->value);
+ freez(cv2);
+ cv2 = save;
+ }
+ co->values = NULL;
+ config_section_unlock(co);
+ }
+
continue;
}
@@ -481,6 +666,10 @@ int appconfig_load(struct config *root, char *filename, int overwrite_used)
continue;
}
+ if(section_name && overwrite_used && section_hash != co->hash && strcmp(section_name, co->name)) {
+ continue;
+ }
+
char *name = s;
char *value = strchr(s, '=');
if(!value) {
@@ -502,15 +691,32 @@ int appconfig_load(struct config *root, char *filename, int overwrite_used)
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);
+ if (!cv) {
+ cv = appconfig_value_create(co, name, value);
+ if (likely(is_exporter_config) && unlikely(!global_exporting_section)) {
+ if (unlikely(!working_connector_section)) {
+ working_connector_section = appconfig_section_find(root, working_connector);
+ if (!working_connector_section)
+ working_connector_section = appconfig_section_create(root, working_connector);
+ if (likely(working_connector_section)) {
+ add_connector_instance(working_connector_section, co);
+ }
+ }
+ }
+ } 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);
+ } 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;
}
@@ -554,7 +760,7 @@ void appconfig_generate(struct config *root, BUFFER *wb, int only_changed)
}
appconfig_wrlock(root);
- for(co = root->sections; co ; co = co->next) {
+ for(co = root->first_section; co ; co = co->next) {
if(!strcmp(co->name, CONFIG_SECTION_GLOBAL)
|| !strcmp(co->name, CONFIG_SECTION_WEB)
|| !strcmp(co->name, CONFIG_SECTION_STATSD)
@@ -564,6 +770,7 @@ void appconfig_generate(struct config *root, BUFFER *wb, int only_changed)
|| !strcmp(co->name, CONFIG_SECTION_HEALTH)
|| !strcmp(co->name, CONFIG_SECTION_BACKEND)
|| !strcmp(co->name, CONFIG_SECTION_STREAM)
+ || !strcmp(co->name, CONFIG_SECTION_HOST_LABEL)
)
pri = 0;
else if(!strncmp(co->name, "plugin:", 7)) pri = 1;
@@ -669,3 +876,8 @@ int config_parse_duration(const char* string, int* result) {
*result = 0;
return 0;
}
+
+struct section *appconfig_get_section(struct config *root, const char *name)
+{
+ return appconfig_section_find(root, name);
+}
diff --git a/libnetdata/config/appconfig.h b/libnetdata/config/appconfig.h
index 32e289f9c..9d02e4ada 100644
--- a/libnetdata/config/appconfig.h
+++ b/libnetdata/config/appconfig.h
@@ -82,23 +82,67 @@
#define CONFIG_FILENAME "netdata.conf"
-#define CONFIG_SECTION_GLOBAL "global"
-#define CONFIG_SECTION_WEB "web"
-#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_BACKEND "backend"
-#define CONFIG_SECTION_STREAM "stream"
+#define CONFIG_SECTION_GLOBAL "global"
+#define CONFIG_SECTION_WEB "web"
+#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_BACKEND "backend"
+#define CONFIG_SECTION_STREAM "stream"
+#define CONFIG_SECTION_EXPORTING "exporting:global"
+#define CONFIG_SECTION_PROMETHEUS "prometheus:exporter"
+#define CONFIG_SECTION_HOST_LABEL "host labels"
+#define EXPORTING_CONF "exporting.conf"
// 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 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 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; // 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
+};
+
struct config {
- struct section *sections;
+ struct section *first_section;
+ struct section *last_section; // optimize inserting at the end
netdata_mutex_t mutex;
avl_tree_lock index;
};
@@ -112,11 +156,15 @@ struct config {
#define CONFIG_BOOLEAN_AUTO 2 // enabled if it has useful info when enabled
#endif
-extern int appconfig_load(struct config *root, char *filename, int overwrite_used);
+extern int appconfig_load(struct config *root, char *filename, int overwrite_used, const char *section_name);
+extern void config_section_wrlock(struct section *co);
+extern void config_section_unlock(struct section *co);
+extern char *appconfig_get_by_section(struct section *co, const char *name, const char *default_value);
extern char *appconfig_get(struct config *root, const char *section, const char *name, const char *default_value);
extern long long appconfig_get_number(struct config *root, const char *section, const char *name, long long value);
extern LONG_DOUBLE appconfig_get_float(struct config *root, const char *section, const char *name, LONG_DOUBLE value);
+extern int appconfig_get_boolean_by_section(struct section *co, const char *name, int value);
extern int appconfig_get_boolean(struct config *root, const char *section, const char *name, int value);
extern int appconfig_get_boolean_ondemand(struct config *root, const char *section, const char *name, int value);
extern int appconfig_get_duration(struct config *root, const char *section, const char *name, const char *value);
@@ -134,6 +182,28 @@ extern void appconfig_generate(struct config *root, BUFFER *wb, int only_changed
extern int appconfig_section_compare(void *a, void *b);
+extern void appconfig_section_destroy_non_loaded(struct config *root, const char *section);
+
extern int config_parse_duration(const char* string, int* result);
+extern struct section *appconfig_get_section(struct config *root, const char *name);
+
+extern void appconfig_wrlock(struct config *root);
+extern void appconfig_unlock(struct config *root);
+
+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;
+
+extern _CONNECTOR_INSTANCE *add_connector_instance(struct section *connector, struct section *instance);
+
#endif /* NETDATA_CONFIG_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-07 22:05:17 +0000