![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
diff --git a/src/core/store.c b/src/core/store.c
index 6deb699024d9b1f90052834efb55d4bcb3abd83a..ab37e689641ec52b42f844bb5f1f1d3cd6236d63 100644 (file)
--- a/src/core/store.c
+++ b/src/core/store.c
/*
* SysDB - src/core/store.c
- * Copyright (C) 2012 Sebastian 'tokkee' Harl <sh@tokkee.org>
+ * Copyright (C) 2012-2013 Sebastian 'tokkee' Harl <sh@tokkee.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
+#if HAVE_CONFIG_H
+# include "config.h"
+#endif /* HAVE_CONFIG_H */
+
#include "sysdb.h"
-#include "core/store.h"
-#include "core/error.h"
+#include "core/store-private.h"
#include "core/plugin.h"
-#include "utils/llist.h"
+#include "utils/avltree.h"
+#include "utils/error.h"
#include <assert.h>
#include <stdlib.h>
#include <string.h>
+#include <math.h>
#include <pthread.h>
/*
* private variables
*/
-static sdb_llist_t *host_list = NULL;
+static sdb_avltree_t *hosts = NULL;
static pthread_rwlock_t host_lock = PTHREAD_RWLOCK_INITIALIZER;
/*
*/
static sdb_type_t sdb_host_type;
-static sdb_type_t sdb_attribute_type;
static sdb_type_t sdb_service_type;
+static sdb_type_t sdb_metric_type;
+static sdb_type_t sdb_attribute_type;
-typedef struct {
- sdb_object_t super;
- sdb_time_t last_update;
-} sdb_store_obj_t;
-#define SDB_STORE_OBJ(obj) ((sdb_store_obj_t *)(obj))
-#define SDB_CONST_STORE_OBJ(obj) ((const sdb_store_obj_t *)(obj))
-
-typedef struct {
- sdb_store_obj_t super;
-
- char *hostname;
-} sdb_service_t;
-#define SDB_SVC(obj) ((sdb_service_t *)(obj))
-#define SDB_CONST_SVC(obj) ((const sdb_service_t *)(obj))
+static int
+store_obj_init(sdb_object_t *obj, va_list ap)
+{
+ sdb_store_obj_t *sobj = STORE_OBJ(obj);
-typedef struct {
- sdb_store_obj_t super;
+ sobj->type = va_arg(ap, int);
- char *attr_value;
- char *hostname;
-} sdb_attribute_t;
-#define SDB_ATTR(obj) ((sdb_attribute_t *)(obj))
-#define SDB_CONST_ATTR(obj) ((const sdb_attribute_t *)(obj))
+ sobj->last_update = va_arg(ap, sdb_time_t);
+ sobj->interval = 0;
+ sobj->backends = NULL;
+ sobj->backends_num = 0;
+ sobj->parent = NULL;
+ return 0;
+} /* store_obj_init */
-typedef struct {
- sdb_store_obj_t super;
+static void
+store_obj_destroy(sdb_object_t *obj)
+{
+ sdb_store_obj_t *sobj = STORE_OBJ(obj);
+ size_t i;
- sdb_llist_t *attributes;
- sdb_llist_t *services;
-} sdb_host_t;
-#define SDB_HOST(obj) ((sdb_host_t *)(obj))
-#define SDB_CONST_HOST(obj) ((const sdb_host_t *)(obj))
+ for (i = 0; i < sobj->backends_num; ++i)
+ free(sobj->backends[i]);
+ free(sobj->backends);
+ sobj->backends = NULL;
+ sobj->backends_num = 0;
-/* shortcuts for accessing the sdb_store_obj_t attributes of inheriting
- * objects */
-#define _last_update super.last_update
+ // We don't currently keep an extra reference for parent objects to
+ // avoid circular self-references which are not handled correctly by
+ // the ref-count base management layer.
+ //sdb_object_deref(SDB_OBJ(sobj->parent));
+} /* store_obj_destroy */
static int
-sdb_host_init(sdb_object_t *obj, va_list __attribute__((unused)) ap)
+sdb_host_init(sdb_object_t *obj, va_list ap)
{
- SDB_HOST(obj)->_last_update = sdb_gettime();
- /* ignore errors -> last_update will be updated later */
+ sdb_host_t *sobj = HOST(obj);
+ int ret;
+
+ /* this will consume the first argument (type) of ap */
+ ret = store_obj_init(obj, ap);
+ if (ret)
+ return ret;
- SDB_HOST(obj)->attributes = sdb_llist_create();
- if (! SDB_HOST(obj)->attributes)
+ sobj->services = sdb_avltree_create();
+ if (! sobj->services)
return -1;
- SDB_HOST(obj)->services = sdb_llist_create();
- if (! SDB_HOST(obj)->services)
+ sobj->metrics = sdb_avltree_create();
+ if (! sobj->metrics)
+ return -1;
+ sobj->attributes = sdb_avltree_create();
+ if (! sobj->attributes)
return -1;
return 0;
} /* sdb_host_init */
static void
sdb_host_destroy(sdb_object_t *obj)
{
+ sdb_host_t *sobj = HOST(obj);
assert(obj);
- if (SDB_HOST(obj)->attributes)
- sdb_llist_destroy(SDB_HOST(obj)->attributes);
- if (SDB_HOST(obj)->services)
- sdb_llist_destroy(SDB_HOST(obj)->services);
+ store_obj_destroy(obj);
+
+ if (sobj->services)
+ sdb_avltree_destroy(sobj->services);
+ if (sobj->metrics)
+ sdb_avltree_destroy(sobj->metrics);
+ if (sobj->attributes)
+ sdb_avltree_destroy(sobj->attributes);
} /* sdb_host_destroy */
-static sdb_object_t *
-sdb_host_clone(const sdb_object_t *obj)
+static int
+sdb_service_init(sdb_object_t *obj, va_list ap)
{
- const sdb_host_t *host = (const sdb_host_t *)obj;
- sdb_host_t *new;
+ sdb_service_t *sobj = SVC(obj);
+ int ret;
- new = SDB_HOST(sdb_object_create(obj->name, sdb_host_type));
- if (! new)
- return NULL;
+ /* this will consume the first argument (type) of ap */
+ ret = store_obj_init(obj, ap);
+ if (ret)
+ return ret;
- /* make sure these are initialized; else sdb_object_deref() might access
- * arbitrary memory in case of an error */
- new->services = new->attributes = NULL;
+ sobj->attributes = sdb_avltree_create();
+ if (! sobj->attributes)
+ return -1;
+ return 0;
+} /* sdb_service_init */
- if (host->attributes) {
- new->attributes = sdb_llist_clone(host->attributes);
- if (! new->attributes) {
- sdb_object_deref(SDB_OBJ(new));
- return NULL;
- }
- }
+static void
+sdb_service_destroy(sdb_object_t *obj)
+{
+ sdb_service_t *sobj = SVC(obj);
+ assert(obj);
- new->_last_update = host->_last_update;
- if (host->services) {
- new->services = sdb_llist_clone(host->services);
- if (! new->services) {
- sdb_object_deref(SDB_OBJ(new));
- return NULL;
- }
- }
- return SDB_OBJ(new);
-} /* sdb_host_clone */
+ store_obj_destroy(obj);
+
+ if (sobj->attributes)
+ sdb_avltree_destroy(sobj->attributes);
+} /* sdb_service_destroy */
static int
-sdb_attr_init(sdb_object_t *obj, va_list ap)
+sdb_metric_init(sdb_object_t *obj, va_list ap)
{
- const char *hostname = va_arg(ap, const char *);
- const char *value = va_arg(ap, const char *);
+ sdb_metric_t *sobj = METRIC(obj);
+ int ret;
- SDB_ATTR(obj)->hostname = strdup(hostname);
- SDB_ATTR(obj)->attr_value = strdup(value);
- if ((! SDB_ATTR(obj)->hostname) || (! SDB_ATTR(obj)->attr_value))
+ /* this will consume the first argument (type) of ap */
+ ret = store_obj_init(obj, ap);
+ if (ret)
+ return ret;
+
+ sobj->attributes = sdb_avltree_create();
+ if (! sobj->attributes)
return -1;
- SDB_ATTR(obj)->_last_update = sdb_gettime();
+ sobj->store.type = sobj->store.id = NULL;
return 0;
-} /* sdb_attr_init */
+} /* sdb_metric_init */
static void
-sdb_attr_destroy(sdb_object_t *obj)
+sdb_metric_destroy(sdb_object_t *obj)
{
+ sdb_metric_t *sobj = METRIC(obj);
assert(obj);
- if (SDB_ATTR(obj)->hostname)
- free(SDB_ATTR(obj)->hostname);
- if (SDB_ATTR(obj)->attr_value)
- free(SDB_ATTR(obj)->attr_value);
-} /* sdb_attr_destroy */
+ store_obj_destroy(obj);
-static sdb_object_t *
-sdb_attr_clone(const sdb_object_t *obj)
-{
- const sdb_attribute_t *attr = (const sdb_attribute_t *)obj;
- sdb_attribute_t *new;
+ if (sobj->attributes)
+ sdb_avltree_destroy(sobj->attributes);
- new = SDB_ATTR(sdb_object_create(obj->name, sdb_attribute_type,
- attr->hostname, attr->attr_value));
- if (! new)
- return NULL;
-
- new->_last_update = attr->_last_update;
- return SDB_OBJ(new);
-} /* sdb_attr_clone */
+ if (sobj->store.type)
+ free(sobj->store.type);
+ if (sobj->store.id)
+ free(sobj->store.id);
+} /* sdb_metric_destroy */
static int
-sdb_svc_init(sdb_object_t *obj, va_list ap)
+sdb_attr_init(sdb_object_t *obj, va_list ap)
{
- const char *hostname = va_arg(ap, const char *);
-
- SDB_SVC(obj)->hostname = strdup(hostname);
- if (! SDB_SVC(obj)->hostname)
- return -1;
-
- SDB_SVC(obj)->_last_update = sdb_gettime();
- /* ignore errors -> last_update will be updated later */
+ const sdb_data_t *value;
+ int ret;
+
+ /* this will consume the first two arguments
+ * (type and last_update) of ap */
+ ret = store_obj_init(obj, ap);
+ if (ret)
+ return ret;
+ value = va_arg(ap, const sdb_data_t *);
+
+ if (value)
+ if (sdb_data_copy(&ATTR(obj)->value, value))
+ return -1;
return 0;
-} /* sdb_svc_init */
+} /* sdb_attr_init */
static void
-sdb_svc_destroy(sdb_object_t *obj)
+sdb_attr_destroy(sdb_object_t *obj)
{
assert(obj);
- if (SDB_SVC(obj)->hostname)
- free(SDB_SVC(obj)->hostname);
-} /* sdb_svc_destroy */
-
-static sdb_object_t *
-sdb_svc_clone(const sdb_object_t *obj)
-{
- const sdb_service_t *svc = (const sdb_service_t *)obj;
- sdb_service_t *new;
-
- new = SDB_SVC(sdb_object_create(obj->name, sdb_service_type,
- svc->hostname));
- if (! new)
- return NULL;
-
- new->_last_update = svc->_last_update;
- return SDB_OBJ(new);
-} /* sdb_svc_clone */
+ store_obj_destroy(obj);
+ sdb_data_free_datum(&ATTR(obj)->value);
+} /* sdb_attr_destroy */
static sdb_type_t sdb_host_type = {
sizeof(sdb_host_t),
-
sdb_host_init,
- sdb_host_destroy,
- sdb_host_clone
-};
-
-static sdb_type_t sdb_attribute_type = {
- sizeof(sdb_attribute_t),
-
- sdb_attr_init,
- sdb_attr_destroy,
- sdb_attr_clone
+ sdb_host_destroy
};
static sdb_type_t sdb_service_type = {
sizeof(sdb_service_t),
+ sdb_service_init,
+ sdb_service_destroy
+};
- sdb_svc_init,
- sdb_svc_destroy,
- sdb_svc_clone
+static sdb_type_t sdb_metric_type = {
+ sizeof(sdb_metric_t),
+ sdb_metric_init,
+ sdb_metric_destroy
+};
+
+static sdb_type_t sdb_attribute_type = {
+ sizeof(sdb_attribute_t),
+ sdb_attr_init,
+ sdb_attr_destroy
};
/*
- * public API
+ * private helper functions
*/
-int
-sdb_store_host(const char *name, sdb_time_t last_update)
+static sdb_host_t *
+lookup_host(const char *name, bool canonicalize)
{
- sdb_host_t *old;
-
+ sdb_host_t *host;
char *cname;
- int status = 0;
- if (! name)
- return -1;
+ assert(name);
+ if (! canonicalize)
+ return HOST(sdb_avltree_lookup(hosts, name));
- cname = sdb_plugin_cname(strdup(name));
+ cname = strdup(name);
+ cname = sdb_plugin_cname(cname);
if (! cname) {
sdb_log(SDB_LOG_ERR, "store: strdup failed");
- return -1;
+ return NULL;
}
- if (last_update <= 0)
- last_update = sdb_gettime();
+ host = HOST(sdb_avltree_lookup(hosts, cname));
+ free(cname);
+ return host;
+} /* lookup_host */
- pthread_rwlock_wrlock(&host_lock);
+static int
+record_backend(sdb_store_obj_t *obj)
+{
+ const sdb_plugin_info_t *info;
+ char **tmp;
+ size_t i;
- if (! host_list) {
- if (! (host_list = sdb_llist_create())) {
- pthread_rwlock_unlock(&host_lock);
- return -1;
- }
- }
+ info = sdb_plugin_current();
+ if (! info)
+ return 0;
+
+ for (i = 0; i < obj->backends_num; ++i)
+ if (!strcasecmp(obj->backends[i], info->plugin_name))
+ return 0;
+
+ tmp = realloc(obj->backends,
+ (obj->backends_num + 1) * sizeof(*obj->backends));
+ if (! tmp)
+ return -1;
+
+ obj->backends = tmp;
+ obj->backends[obj->backends_num] = strdup(info->plugin_name);
+ if (! obj->backends[obj->backends_num])
+ return -1;
- old = SDB_HOST(sdb_llist_search_by_name(host_list, cname));
+ ++obj->backends_num;
+ return 0;
+} /* record_backend */
+
+static int
+store_obj(sdb_store_obj_t *parent, sdb_avltree_t *parent_tree,
+ int type, const char *name, sdb_time_t last_update,
+ sdb_store_obj_t **updated_obj)
+{
+ sdb_store_obj_t *old, *new;
+ int status = 0;
+
+ assert(parent_tree);
+ if (last_update <= 0)
+ last_update = sdb_gettime();
+
+ old = STORE_OBJ(sdb_avltree_lookup(parent_tree, name));
if (old) {
- if (old->_last_update > last_update) {
- sdb_log(SDB_LOG_DEBUG, "store: Cannot update host '%s' - "
- "value too old (%"PRIscTIME" < %"PRIscTIME")",
- cname, last_update, old->_last_update);
- /* don't report an error; the host may be updated by multiple
+ if (old->last_update > last_update) {
+ sdb_log(SDB_LOG_DEBUG, "store: Cannot update %s '%s' - "
+ "value too old (%"PRIsdbTIME" < %"PRIsdbTIME")",
+ SDB_STORE_TYPE_TO_NAME(type), name,
+ last_update, old->last_update);
+ /* don't report an error; the object may be updated by multiple
* backends */
status = 1;
}
+ else if (old->last_update == last_update) {
+ /* don't report an error and also don't even log this to avoid
+ * excessive noise on high sampling frequencies */
+ status = 1;
+ }
else {
- old->_last_update = last_update;
+ sdb_time_t interval = last_update - old->last_update;
+ old->last_update = last_update;
+ if (interval) {
+ if (old->interval)
+ old->interval = (sdb_time_t)((0.9 * (double)old->interval)
+ + (0.1 * (double)interval));
+ else
+ old->interval = interval;
+ }
}
+
+ new = old;
+ sdb_object_deref(SDB_OBJ(old));
}
else {
- sdb_host_t *new = SDB_HOST(sdb_object_create(name, sdb_host_type));
- if (! new) {
+ if (type == SDB_ATTRIBUTE) {
+ /* the value will be updated by the caller */
+ new = STORE_OBJ(sdb_object_create(name, sdb_attribute_type,
+ type, last_update, NULL));
+ }
+ else {
+ sdb_type_t t;
+ t = type == SDB_HOST
+ ? sdb_host_type
+ : type == SDB_SERVICE
+ ? sdb_service_type
+ : sdb_metric_type;
+ new = STORE_OBJ(sdb_object_create(name, t, type, last_update));
+ }
+
+ if (new) {
+ status = sdb_avltree_insert(parent_tree, SDB_OBJ(new));
+
+ /* pass control to the tree or destroy in case of an error */
+ sdb_object_deref(SDB_OBJ(new));
+ }
+ else {
char errbuf[1024];
- sdb_log(SDB_LOG_ERR, "store: Failed to clone host object: %s",
+ sdb_log(SDB_LOG_ERR, "store: Failed to create %s '%s': %s",
+ SDB_STORE_TYPE_TO_NAME(type), name,
sdb_strerror(errno, errbuf, sizeof(errbuf)));
- pthread_rwlock_unlock(&host_lock);
- return -1;
+ status = -1;
}
+ }
- free(SDB_OBJ(new)->name);
- SDB_OBJ(new)->name = cname;
+ if (status < 0)
+ return status;
+ assert(new);
- status = sdb_llist_insert_sorted(host_list, SDB_OBJ(new),
- sdb_object_cmp_by_name);
+ if (new->parent != parent) {
+ // Avoid circular self-references which are not handled
+ // correctly by the ref-count based management layer.
+ //sdb_object_deref(SDB_OBJ(new->parent));
+ //sdb_object_ref(SDB_OBJ(parent));
+ new->parent = parent;
+ }
+
+ if (updated_obj)
+ *updated_obj = new;
+
+ if (record_backend(new))
+ return -1;
+ return status;
+} /* store_obj */
- /* pass control to the list or destroy in case of an error */
- sdb_object_deref(SDB_OBJ(new));
+static int
+store_attr(sdb_store_obj_t *parent, sdb_avltree_t *attributes,
+ const char *key, const sdb_data_t *value, sdb_time_t last_update)
+{
+ sdb_store_obj_t *attr = NULL;
+ int status;
+
+ status = store_obj(parent, attributes, SDB_ATTRIBUTE,
+ key, last_update, &attr);
+ if (status)
+ return status;
+
+ /* don't update unchanged values */
+ if (! sdb_data_cmp(&ATTR(attr)->value, value))
+ return status;
+
+ assert(attr);
+ if (sdb_data_copy(&ATTR(attr)->value, value))
+ return -1;
+ return status;
+} /* store_attr */
+
+/* The host_lock has to be acquired before calling this function. */
+static sdb_avltree_t *
+get_host_children(sdb_host_t *host, int type)
+{
+ if ((type != SDB_SERVICE) && (type != SDB_METRIC)
+ && (type != SDB_ATTRIBUTE))
+ return NULL;
+
+ if (! host)
+ return NULL;
+
+ if (type == SDB_ATTRIBUTE)
+ return host->attributes;
+ else if (type == SDB_METRIC)
+ return host->metrics;
+ else
+ return host->services;
+} /* get_host_children */
+
+/*
+ * ts_tojson serializes a time-series to JSON.
+ *
+ * The function never returns an error. Rather, an error message will be part
+ * of the serialized data.
+ */
+static void
+ts_tojson(sdb_timeseries_t *ts, sdb_strbuf_t *buf)
+{
+ char start_str[64];
+ char end_str[64];
+
+ size_t i;
+
+ /* TODO: make time format configurable */
+ if (! sdb_strftime(start_str, sizeof(start_str),
+ "%F %T %z", ts->start))
+ snprintf(start_str, sizeof(start_str), "<error>");
+ start_str[sizeof(start_str) - 1] = '\0';
+ if (! sdb_strftime(end_str, sizeof(end_str),
+ "%F %T %z", ts->end))
+ snprintf(end_str, sizeof(end_str), "<error>");
+ end_str[sizeof(end_str) - 1] = '\0';
+
+ sdb_strbuf_append(buf, "{\"start\": \"%s\", \"end\": \"%s\", \"data\": {",
+ start_str, end_str);
+
+ for (i = 0; i < ts->data_names_len; ++i) {
+ size_t j;
+ sdb_strbuf_append(buf, "\"%s\": [", ts->data_names[i]);
+
+ for (j = 0; j < ts->data_len; ++j) {
+ char time_str[64];
+
+ if (! sdb_strftime(time_str, sizeof(time_str),
+ "%F %T %z", ts->data[i][j].timestamp))
+ snprintf(time_str, sizeof(time_str), "<error>");
+ time_str[sizeof(time_str) - 1] = '\0';
+
+ /* Some GNU libc versions may print '-nan' which we dont' want */
+ if (isnan(ts->data[i][j].value))
+ sdb_strbuf_append(buf, "{\"timestamp\": \"%s\", "
+ "\"value\": \"nan\"}", time_str);
+ else
+ sdb_strbuf_append(buf, "{\"timestamp\": \"%s\", "
+ "\"value\": \"%f\"}", time_str, ts->data[i][j].value);
+
+ if (j < ts->data_len - 1)
+ sdb_strbuf_append(buf, ",");
+ }
+
+ if (i < ts->data_names_len - 1)
+ sdb_strbuf_append(buf, "],");
+ else
+ sdb_strbuf_append(buf, "]");
+ }
+ sdb_strbuf_append(buf, "}}");
+} /* ts_tojson */
+
+/*
+ * public API
+ */
+
+void
+sdb_store_clear(void)
+{
+ sdb_avltree_destroy(hosts);
+ hosts = NULL;
+} /* sdb_store_clear */
+
+int
+sdb_store_host(const char *name, sdb_time_t last_update)
+{
+ char *cname = NULL;
+ int status = 0;
+
+ if (! name)
+ return -1;
+
+ cname = sdb_plugin_cname(strdup(name));
+ if (! cname) {
+ sdb_log(SDB_LOG_ERR, "store: strdup failed");
+ return -1;
}
+ pthread_rwlock_wrlock(&host_lock);
+ if (! hosts)
+ if (! (hosts = sdb_avltree_create()))
+ status = -1;
+
+ if (! status)
+ status = store_obj(NULL, hosts, SDB_HOST, cname, last_update, NULL);
pthread_rwlock_unlock(&host_lock);
+
+ if (sdb_plugin_store_host(name, last_update))
+ status = -1;
+
+ free(cname);
return status;
} /* sdb_store_host */
-_Bool
+bool
sdb_store_has_host(const char *name)
{
sdb_host_t *host;
if (! name)
return NULL;
- host = SDB_HOST(sdb_llist_search_by_name(host_list, name));
+ host = lookup_host(name, /* canonicalize = */ 0);
+ sdb_object_deref(SDB_OBJ(host));
return host != NULL;
} /* sdb_store_has_host */
+sdb_store_obj_t *
+sdb_store_get_host(const char *name)
+{
+ sdb_host_t *host;
+
+ if (! name)
+ return NULL;
+
+ host = lookup_host(name, /* canonicalize = */ 0);
+ if (! host)
+ return NULL;
+
+ return STORE_OBJ(host);
+} /* sdb_store_get_host */
+
int
-sdb_store_attribute(const char *hostname, const char *key, const char *value,
+sdb_store_attribute(const char *hostname,
+ const char *key, const sdb_data_t *value,
sdb_time_t last_update)
{
sdb_host_t *host;
- sdb_attribute_t *old;
-
+ sdb_avltree_t *attrs;
int status = 0;
if ((! hostname) || (! key))
return -1;
- if (last_update <= 0)
- last_update = sdb_gettime();
+ pthread_rwlock_wrlock(&host_lock);
+ host = lookup_host(hostname, /* canonicalize = */ 1);
+ attrs = get_host_children(host, SDB_ATTRIBUTE);
+ if (! attrs) {
+ sdb_log(SDB_LOG_ERR, "store: Failed to store attribute '%s' - "
+ "host '%s' not found", key, hostname);
+ status = -1;
+ }
+
+ if (! status)
+ status = store_attr(STORE_OBJ(host), attrs, key, value, last_update);
+
+ sdb_object_deref(SDB_OBJ(host));
+ pthread_rwlock_unlock(&host_lock);
- if (! host_list)
+ if (sdb_plugin_store_attribute(hostname, key, value, last_update))
+ status = -1;
+ return status;
+} /* sdb_store_attribute */
+
+int
+sdb_store_service(const char *hostname, const char *name,
+ sdb_time_t last_update)
+{
+ sdb_host_t *host;
+ sdb_avltree_t *services;
+
+ int status = 0;
+
+ if ((! hostname) || (! name))
return -1;
pthread_rwlock_wrlock(&host_lock);
+ host = lookup_host(hostname, /* canonicalize = */ 1);
+ services = get_host_children(host, SDB_SERVICE);
+ if (! services) {
+ sdb_log(SDB_LOG_ERR, "store: Failed to store service '%s' - "
+ "host '%s' not found", name, hostname);
+ status = -1;
+ }
- host = SDB_HOST(sdb_llist_search_by_name(host_list, hostname));
- if (! host) {
+ if (! status)
+ status = store_obj(STORE_OBJ(host), services, SDB_SERVICE,
+ name, last_update, NULL);
+
+ sdb_object_deref(SDB_OBJ(host));
+ pthread_rwlock_unlock(&host_lock);
+
+ if (sdb_plugin_store_service(hostname, name, last_update))
+ status = -1;
+ return status;
+} /* sdb_store_service */
+
+int
+sdb_store_service_attr(const char *hostname, const char *service,
+ const char *key, const sdb_data_t *value, sdb_time_t last_update)
+{
+ sdb_host_t *host;
+ sdb_service_t *svc;
+ sdb_avltree_t *services;
+ int status = 0;
+
+ if ((! hostname) || (! service) || (! key))
+ return -1;
+
+ pthread_rwlock_wrlock(&host_lock);
+ host = lookup_host(hostname, /* canonicalize = */ 1);
+ services = get_host_children(host, SDB_SERVICE);
+ sdb_object_deref(SDB_OBJ(host));
+ if (! services) {
+ sdb_log(SDB_LOG_ERR, "store: Failed to store attribute '%s' "
+ "for service '%s' - host '%ss' not found",
+ key, service, hostname);
pthread_rwlock_unlock(&host_lock);
return -1;
}
- old = SDB_ATTR(sdb_llist_search_by_name(host->attributes, key));
- if (old) {
- if (old->_last_update > last_update) {
- sdb_log(SDB_LOG_DEBUG, "store: Cannot update attribute "
- "'%s/%s' - value too old (%"PRIscTIME" < %"PRIscTIME")",
- hostname, key, last_update, old->_last_update);
- status = 1;
- }
- else {
- old->_last_update = last_update;
- }
+ svc = SVC(sdb_avltree_lookup(services, service));
+ if (! svc) {
+ sdb_log(SDB_LOG_ERR, "store: Failed to store attribute '%s' - "
+ "service '%s/%s' not found", key, hostname, service);
+ status = -1;
}
- else {
- sdb_attribute_t *new = SDB_ATTR(sdb_object_create(key,
- sdb_attribute_type, hostname, value));
- if (! new) {
- char errbuf[1024];
- sdb_log(SDB_LOG_ERR, "store: Failed to clone attribute "
- "object: %s", sdb_strerror(errno, errbuf, sizeof(errbuf)));
- pthread_rwlock_unlock(&host_lock);
- return -1;
- }
- status = sdb_llist_insert_sorted(host->attributes, SDB_OBJ(new),
- sdb_object_cmp_by_name);
-
- /* pass control to the list or destroy in case of an error */
- sdb_object_deref(SDB_OBJ(new));
- }
+ if (! status)
+ status = store_attr(STORE_OBJ(svc), svc->attributes,
+ key, value, last_update);
+ sdb_object_deref(SDB_OBJ(svc));
pthread_rwlock_unlock(&host_lock);
+
+ if (sdb_plugin_store_service_attribute(hostname, service,
+ key, value, last_update))
+ status = -1;
return status;
-} /* sdb_store_attribute */
+} /* sdb_store_service_attr */
int
-sdb_store_service(const char *hostname, const char *name,
- sdb_time_t last_update)
+sdb_store_metric(const char *hostname, const char *name,
+ sdb_metric_store_t *store, sdb_time_t last_update)
{
+ sdb_store_obj_t *obj = NULL;
sdb_host_t *host;
- sdb_service_t *old;
+ sdb_metric_t *metric;
+
+ sdb_avltree_t *metrics;
int status = 0;
if ((! hostname) || (! name))
return -1;
- if (last_update <= 0)
- last_update = sdb_gettime();
-
- if (! host_list)
- return -1;
+ if (store) {
+ if ((store->type != NULL) != (store->id != NULL))
+ return -1;
+ else if (! store->type)
+ store = NULL;
+ }
pthread_rwlock_wrlock(&host_lock);
+ host = lookup_host(hostname, /* canonicalize = */ 1);
+ metrics = get_host_children(host, SDB_METRIC);
+ if (! metrics) {
+ sdb_log(SDB_LOG_ERR, "store: Failed to store metric '%s' - "
+ "host '%s' not found", name, hostname);
+ status = -1;
+ }
+
+ if (! status)
+ status = store_obj(STORE_OBJ(host), metrics, SDB_METRIC,
+ name, last_update, &obj);
+ sdb_object_deref(SDB_OBJ(host));
- host = SDB_HOST(sdb_llist_search_by_name(host_list, hostname));
- if (! host) {
+ if (status || (! store)) {
pthread_rwlock_unlock(&host_lock);
- return -1;
+ return status;
}
- old = SDB_SVC(sdb_llist_search_by_name(host->services, name));
- if (old) {
- if (old->_last_update > last_update) {
- sdb_log(SDB_LOG_DEBUG, "store: Cannot update service "
- "'%s/%s' - value too old (%"PRIscTIME" < %"PRIscTIME")",
- hostname, name, last_update, old->_last_update);
- status = 1;
- }
- else {
- old->_last_update = last_update;
- }
+ assert(obj);
+ metric = METRIC(obj);
+
+ if ((! metric->store.type) || strcasecmp(metric->store.type, store->type)) {
+ if (metric->store.type)
+ free(metric->store.type);
+ metric->store.type = strdup(store->type);
}
- else {
- sdb_service_t *new = SDB_SVC(sdb_object_create(name, sdb_service_type,
- hostname));
- if (! new) {
- char errbuf[1024];
- sdb_log(SDB_LOG_ERR, "store: Failed to clone service "
- "object: %s", sdb_strerror(errno, errbuf, sizeof(errbuf)));
- pthread_rwlock_unlock(&host_lock);
- return -1;
- }
+ if ((! metric->store.id) || strcasecmp(metric->store.id, store->id)) {
+ if (metric->store.id)
+ free(metric->store.id);
+ metric->store.id = strdup(store->id);
+ }
+
+ if ((! metric->store.type) || (! metric->store.id)) {
+ if (metric->store.type)
+ free(metric->store.type);
+ if (metric->store.id)
+ free(metric->store.id);
+ metric->store.type = metric->store.id = NULL;
+ status = -1;
+ }
+ pthread_rwlock_unlock(&host_lock);
- status = sdb_llist_insert_sorted(host->services, SDB_OBJ(new),
- sdb_object_cmp_by_name);
+ if (sdb_plugin_store_metric(hostname, name, store, last_update))
+ status = -1;
+ return status;
+} /* sdb_store_metric */
- /* pass control to the list or destroy in case of an error */
- sdb_object_deref(SDB_OBJ(new));
+int
+sdb_store_metric_attr(const char *hostname, const char *metric,
+ const char *key, const sdb_data_t *value, sdb_time_t last_update)
+{
+ sdb_avltree_t *metrics;
+ sdb_host_t *host;
+ sdb_metric_t *m;
+ int status = 0;
+
+ if ((! hostname) || (! metric) || (! key))
+ return -1;
+
+ pthread_rwlock_wrlock(&host_lock);
+ host = lookup_host(hostname, /* canonicalize = */ 1);
+ metrics = get_host_children(host, SDB_METRIC);
+ sdb_object_deref(SDB_OBJ(host));
+ if (! metrics) {
+ sdb_log(SDB_LOG_ERR, "store: Failed to store attribute '%s' "
+ "for metric '%s' - host '%s' not found",
+ key, metric, hostname);
+ pthread_rwlock_unlock(&host_lock);
+ return -1;
}
+ m = METRIC(sdb_avltree_lookup(metrics, metric));
+ if (! m) {
+ sdb_log(SDB_LOG_ERR, "store: Failed to store attribute '%s' - "
+ "metric '%s/%s' not found", key, hostname, metric);
+ status = -1;
+ }
+
+ if (! status)
+ status = store_attr(STORE_OBJ(m), m->attributes,
+ key, value, last_update);
+
+ sdb_object_deref(SDB_OBJ(m));
pthread_rwlock_unlock(&host_lock);
+
+ if (sdb_plugin_store_metric_attribute(hostname, metric,
+ key, value, last_update))
+ status = -1;
return status;
-} /* sdb_store_service */
+} /* sdb_store_metric_attr */
+
+sdb_store_obj_t *
+sdb_store_get_child(sdb_store_obj_t *host, int type, const char *name)
+{
+ sdb_avltree_t *children;
+
+ if ((! host) || (host->type != SDB_HOST) || (! name))
+ return NULL;
+
+ children = get_host_children(HOST(host), type);
+ if (! children)
+ return NULL;
+ return STORE_OBJ(sdb_avltree_lookup(children, name));
+} /* sdb_store_get_child */
int
-sdb_store_dump(FILE *fh)
+sdb_store_fetch_timeseries(const char *hostname, const char *metric,
+ sdb_timeseries_opts_t *opts, sdb_strbuf_t *buf)
{
- sdb_llist_iter_t *host_iter;
+ sdb_avltree_t *metrics;
+ sdb_host_t *host;
+ sdb_metric_t *m;
+
+ sdb_timeseries_t *ts;
- if (! fh)
+ if ((! hostname) || (! metric) || (! opts) || (! buf))
return -1;
pthread_rwlock_rdlock(&host_lock);
+ host = lookup_host(hostname, /* canonicalize = */ 1);
+ metrics = get_host_children(host, SDB_METRIC);
+ sdb_object_deref(SDB_OBJ(host));
+ if (! metrics) {
+ sdb_log(SDB_LOG_ERR, "store: Failed to fetch time-series '%s/%s' "
+ "- host '%s' not found", hostname, metric, hostname);
+ pthread_rwlock_unlock(&host_lock);
+ return -1;
+ }
- host_iter = sdb_llist_get_iter(host_list);
- if (! host_iter) {
+ m = METRIC(sdb_avltree_lookup(metrics, metric));
+ if (! m) {
+ sdb_log(SDB_LOG_ERR, "store: Failed to fetch time-series '%s/%s' "
+ "- metric '%s' not found", hostname, metric, metric);
pthread_rwlock_unlock(&host_lock);
return -1;
}
- while (sdb_llist_iter_has_next(host_iter)) {
- sdb_host_t *host = SDB_HOST(sdb_llist_iter_get_next(host_iter));
- sdb_llist_iter_t *svc_iter;
- sdb_llist_iter_t *attr_iter;
+ if ((! m->store.type) || (! m->store.id)) {
+ sdb_log(SDB_LOG_ERR, "store: Failed to fetch time-series '%s/%s' "
+ "- no data-store configured for the stored metric",
+ hostname, metric);
+ pthread_rwlock_unlock(&host_lock);
+ return -1;
+ }
- char time_str[64];
+ {
+ char type[strlen(m->store.type) + 1];
+ char id[strlen(m->store.id) + 1];
- assert(host);
+ strncpy(type, m->store.type, sizeof(type));
+ strncpy(id, m->store.id, sizeof(id));
+ pthread_rwlock_unlock(&host_lock);
- if (! sdb_strftime(time_str, sizeof(time_str),
- "%F %T %z", host->_last_update))
- snprintf(time_str, sizeof(time_str), "<error>");
- time_str[sizeof(time_str) - 1] = '\0';
+ ts = sdb_plugin_fetch_timeseries(type, id, opts);
+ if (! ts) {
+ sdb_log(SDB_LOG_ERR, "store: Failed to fetch time-series '%s/%s' "
+ "- %s fetcher callback returned no data for '%s'",
+ hostname, metric, type, id);
+ return -1;
+ }
+ }
- fprintf(fh, "Host '%s' (last updated: %s):\n",
- SDB_OBJ(host)->name, time_str);
+ ts_tojson(ts, buf);
+ sdb_timeseries_destroy(ts);
+ return 0;
+} /* sdb_store_fetch_timeseries */
- attr_iter = sdb_llist_get_iter(host->attributes);
- if (! attr_iter) {
- char errbuf[1024];
- fprintf(fh, "Failed to retrieve attributes: %s\n",
- sdb_strerror(errno, errbuf, sizeof(errbuf)));
- continue;
- }
+int
+sdb_store_get_field(sdb_store_obj_t *obj, int field, sdb_data_t *res)
+{
+ sdb_data_t tmp;
- while (sdb_llist_iter_has_next(attr_iter)) {
- sdb_attribute_t *attr = SDB_ATTR(sdb_llist_iter_get_next(attr_iter));
- assert(attr);
+ if (! obj)
+ return -1;
- if (! sdb_strftime(time_str, sizeof(time_str),
- "%F %T %z", attr->_last_update))
- snprintf(time_str, sizeof(time_str), "<error>");
- time_str[sizeof(time_str) - 1] = '\0';
+ switch (field) {
+ case SDB_FIELD_NAME:
+ tmp.type = SDB_TYPE_STRING;
+ tmp.data.string = strdup(SDB_OBJ(obj)->name);
+ if (! tmp.data.string)
+ return -1;
+ break;
+ case SDB_FIELD_LAST_UPDATE:
+ tmp.type = SDB_TYPE_DATETIME;
+ tmp.data.datetime = obj->last_update;
+ break;
+ case SDB_FIELD_AGE:
+ tmp.type = SDB_TYPE_DATETIME;
+ tmp.data.datetime = sdb_gettime() - obj->last_update;
+ break;
+ case SDB_FIELD_INTERVAL:
+ tmp.type = SDB_TYPE_DATETIME;
+ tmp.data.datetime = obj->interval;
+ break;
+ case SDB_FIELD_BACKEND:
+ if (! res)
+ return 0;
+ tmp.type = SDB_TYPE_ARRAY | SDB_TYPE_STRING;
+ tmp.data.array.length = obj->backends_num;
+ tmp.data.array.values = obj->backends;
+ return sdb_data_copy(res, &tmp);
+ case SDB_FIELD_VALUE:
+ if (obj->type != SDB_ATTRIBUTE)
+ return -1;
+ if (! res)
+ return 0;
+ return sdb_data_copy(res, &ATTR(obj)->value);
+ default:
+ return -1;
+ }
+ if (res)
+ *res = tmp;
+ else
+ sdb_data_free_datum(&tmp);
+ return 0;
+} /* sdb_store_get_field */
- fprintf(fh, "\tAttribute '%s' -> '%s' (last updated: %s)\n",
- SDB_OBJ(attr)->name, attr->attr_value, time_str);
- }
+int
+sdb_store_get_attr(sdb_store_obj_t *obj, const char *name, sdb_data_t *res,
+ sdb_store_matcher_t *filter)
+{
+ sdb_avltree_t *tree = NULL;
+ sdb_store_obj_t *attr;
- sdb_llist_iter_destroy(attr_iter);
+ if ((! obj) || (! name))
+ return -1;
- svc_iter = sdb_llist_get_iter(host->services);
- if (! svc_iter) {
- char errbuf[1024];
- fprintf(fh, "Failed to retrieve services: %s\n",
- sdb_strerror(errno, errbuf, sizeof(errbuf)));
- continue;
- }
+ if (obj->type == SDB_HOST)
+ tree = HOST(obj)->attributes;
+ else if (obj->type == SDB_SERVICE)
+ tree = SVC(obj)->attributes;
+ else if (obj->type == SDB_METRIC)
+ tree = METRIC(obj)->attributes;
- while (sdb_llist_iter_has_next(svc_iter)) {
- sdb_service_t *svc = SDB_SVC(sdb_llist_iter_get_next(svc_iter));
- assert(svc);
+ if (! tree)
+ return -1;
- if (! sdb_strftime(time_str, sizeof(time_str),
- "%F %T %z", svc->_last_update))
- snprintf(time_str, sizeof(time_str), "<error>");
- time_str[sizeof(time_str) - 1] = '\0';
+ attr = STORE_OBJ(sdb_avltree_lookup(tree, name));
+ if (! attr)
+ return -1;
+ if (filter && (! sdb_store_matcher_matches(filter, attr, NULL))) {
+ sdb_object_deref(SDB_OBJ(attr));
+ return -1;
+ }
+
+ assert(STORE_OBJ(attr)->type == SDB_ATTRIBUTE);
+ if (res)
+ sdb_data_copy(res, &ATTR(attr)->value);
+ sdb_object_deref(SDB_OBJ(attr));
+ return 0;
+} /* sdb_store_get_attr */
- fprintf(fh, "\tService '%s' (last updated: %s)\n",
- SDB_OBJ(svc)->name, time_str);
+int
+sdb_store_scan(int type, sdb_store_matcher_t *m, sdb_store_matcher_t *filter,
+ sdb_store_lookup_cb cb, void *user_data)
+{
+ sdb_avltree_iter_t *host_iter = NULL;
+ int status = 0;
+
+ if (! cb)
+ return -1;
+
+ if ((type != SDB_HOST) && (type != SDB_SERVICE) && (type != SDB_METRIC)) {
+ sdb_log(SDB_LOG_ERR, "store: Cannot scan objects of type %d", type);
+ return -1;
+ }
+
+ pthread_rwlock_rdlock(&host_lock);
+
+ if (hosts) {
+ host_iter = sdb_avltree_get_iter(hosts);
+ if (! host_iter)
+ status = -1;
+ }
+
+ /* has_next returns false if the iterator is NULL */
+ while (sdb_avltree_iter_has_next(host_iter)) {
+ sdb_store_obj_t *host;
+ sdb_avltree_iter_t *iter = NULL;
+
+ host = STORE_OBJ(sdb_avltree_iter_get_next(host_iter));
+ assert(host);
+
+ if (! sdb_store_matcher_matches(filter, host, NULL))
+ continue;
+
+ if (type == SDB_SERVICE)
+ iter = sdb_avltree_get_iter(HOST(host)->services);
+ else if (type == SDB_METRIC)
+ iter = sdb_avltree_get_iter(HOST(host)->metrics);
+
+ if (iter) {
+ while (sdb_avltree_iter_has_next(iter)) {
+ sdb_store_obj_t *obj;
+ obj = STORE_OBJ(sdb_avltree_iter_get_next(iter));
+ assert(obj);
+
+ if (sdb_store_matcher_matches(m, obj, filter)) {
+ if (cb(obj, filter, user_data)) {
+ sdb_log(SDB_LOG_ERR, "store: Callback returned "
+ "an error while scanning");
+ status = -1;
+ break;
+ }
+ }
+ }
+ }
+ else if (sdb_store_matcher_matches(m, host, filter)) {
+ if (cb(host, filter, user_data)) {
+ sdb_log(SDB_LOG_ERR, "store: Callback returned "
+ "an error while scanning");
+ status = -1;
+ }
}
- sdb_llist_iter_destroy(svc_iter);
+ sdb_avltree_iter_destroy(iter);
+ if (status)
+ break;
}
- sdb_llist_iter_destroy(host_iter);
+ sdb_avltree_iter_destroy(host_iter);
pthread_rwlock_unlock(&host_lock);
- return 0;
-} /* sdb_store_dump */
+ return status;
+} /* sdb_store_scan */
/* vim: set tw=78 sw=4 ts=4 noexpandtab : */