![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
diff --git a/src/core/store.c b/src/core/store.c
--- a/src/core/store.c
+++ /dev/null
@@ -1,978 +0,0 @@
-/*
- * SysDB - src/core/store.c
- * Copyright (C) 2012-2013 Sebastian 'tokkee' Harl <sh@tokkee.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
- * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#if HAVE_CONFIG_H
-# include "config.h"
-#endif /* HAVE_CONFIG_H */
-
-#include "sysdb.h"
-#include "core/store-private.h"
-#include "core/plugin.h"
-#include "utils/avltree.h"
-#include "utils/error.h"
-
-#include <assert.h>
-
-#include <errno.h>
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <pthread.h>
-
-/*
- * private types
- */
-
-struct sdb_store {
- sdb_object_t super;
-
- /* hosts are the top-level entries and
- * reference everything else */
- sdb_avltree_t *hosts;
- pthread_rwlock_t host_lock;
-};
-
-/* internal representation of a to-be-stored object */
-typedef struct {
- sdb_store_obj_t *parent;
- sdb_avltree_t *parent_tree;
- int type;
- const char *name;
- sdb_time_t last_update;
- const char * const *backends;
- size_t backends_num;
-} store_obj_t;
-#define STORE_OBJ_INIT { NULL, NULL, 0, NULL, 0, NULL, 0 }
-
-static sdb_type_t host_type;
-static sdb_type_t service_type;
-static sdb_type_t metric_type;
-static sdb_type_t attribute_type;
-
-static int
-store_init(sdb_object_t *obj, va_list __attribute__((unused)) ap)
-{
- int err;
- if (! (SDB_STORE(obj)->hosts = sdb_avltree_create()))
- return -1;
- if ((err = pthread_rwlock_init(&SDB_STORE(obj)->host_lock,
- /* attr = */ NULL))) {
- char errbuf[128];
- sdb_log(SDB_LOG_ERR, "store: Failed to initialize lock: %s",
- sdb_strerror(err, errbuf, sizeof(errbuf)));
- return -1;
- }
- return 0;
-} /* store_init */
-
-static void
-store_destroy(sdb_object_t *obj)
-{
- int err;
- if ((err = pthread_rwlock_destroy(&SDB_STORE(obj)->host_lock))) {
- char errbuf[128];
- sdb_log(SDB_LOG_ERR, "store: Failed to destroy lock: %s",
- sdb_strerror(err, errbuf, sizeof(errbuf)));
- return;
- }
- sdb_avltree_destroy(SDB_STORE(obj)->hosts);
- SDB_STORE(obj)->hosts = NULL;
-} /* store_destroy */
-
-static int
-store_obj_init(sdb_object_t *obj, va_list ap)
-{
- sdb_store_obj_t *sobj = STORE_OBJ(obj);
-
- sobj->type = va_arg(ap, int);
-
- 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 */
-
-static void
-store_obj_destroy(sdb_object_t *obj)
-{
- sdb_store_obj_t *sobj = STORE_OBJ(obj);
- size_t i;
-
- for (i = 0; i < sobj->backends_num; ++i)
- free(sobj->backends[i]);
- free(sobj->backends);
- sobj->backends = NULL;
- sobj->backends_num = 0;
-
- // 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
-host_init(sdb_object_t *obj, va_list ap)
-{
- 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;
-
- sobj->services = sdb_avltree_create();
- if (! sobj->services)
- return -1;
- sobj->metrics = sdb_avltree_create();
- if (! sobj->metrics)
- return -1;
- sobj->attributes = sdb_avltree_create();
- if (! sobj->attributes)
- return -1;
- return 0;
-} /* host_init */
-
-static void
-host_destroy(sdb_object_t *obj)
-{
- host_t *sobj = HOST(obj);
- assert(obj);
-
- 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);
-} /* host_destroy */
-
-static int
-service_init(sdb_object_t *obj, va_list ap)
-{
- service_t *sobj = SVC(obj);
- int ret;
-
- /* 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;
- return 0;
-} /* service_init */
-
-static void
-service_destroy(sdb_object_t *obj)
-{
- service_t *sobj = SVC(obj);
- assert(obj);
-
- store_obj_destroy(obj);
-
- if (sobj->attributes)
- sdb_avltree_destroy(sobj->attributes);
-} /* service_destroy */
-
-static int
-metric_init(sdb_object_t *obj, va_list ap)
-{
- sdb_metric_t *sobj = METRIC(obj);
- int ret;
-
- /* 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;
-
- sobj->store.type = sobj->store.id = NULL;
- return 0;
-} /* metric_init */
-
-static void
-metric_destroy(sdb_object_t *obj)
-{
- sdb_metric_t *sobj = METRIC(obj);
- assert(obj);
-
- store_obj_destroy(obj);
-
- if (sobj->attributes)
- sdb_avltree_destroy(sobj->attributes);
-
- if (sobj->store.type)
- free(sobj->store.type);
- if (sobj->store.id)
- free(sobj->store.id);
-} /* metric_destroy */
-
-static int
-attr_init(sdb_object_t *obj, va_list ap)
-{
- 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;
-} /* attr_init */
-
-static void
-attr_destroy(sdb_object_t *obj)
-{
- assert(obj);
-
- store_obj_destroy(obj);
- sdb_data_free_datum(&ATTR(obj)->value);
-} /* attr_destroy */
-
-static sdb_type_t store_type = {
- /* size = */ sizeof(sdb_store_t),
- /* init = */ store_init,
- /* destroy = */ store_destroy,
-};
-
-static sdb_type_t host_type = {
- /* size = */ sizeof(host_t),
- /* init = */ host_init,
- /* destroy = */ host_destroy
-};
-
-static sdb_type_t service_type = {
- /* size = */ sizeof(service_t),
- /* init = */ service_init,
- /* destroy = */ service_destroy
-};
-
-static sdb_type_t metric_type = {
- /* size = */ sizeof(sdb_metric_t),
- /* init = */ metric_init,
- /* destroy = */ metric_destroy
-};
-
-static sdb_type_t attribute_type = {
- /* size = */ sizeof(attr_t),
- /* init = */ attr_init,
- /* destroy = */ attr_destroy
-};
-
-/*
- * private helper functions
- */
-
-static int
-record_backends(sdb_store_obj_t *obj,
- const char * const *backends, size_t backends_num)
-{
- char **tmp;
- size_t i;
-
- for (i = 0; i < backends_num; i++) {
- bool found = 0;
- size_t j;
-
- for (j = 0; j < obj->backends_num; ++j) {
- if (!strcasecmp(obj->backends[j], backends[i])) {
- found = 1;
- break;
- }
- }
- if (found)
- continue;
-
- tmp = realloc(obj->backends,
- (obj->backends_num + 1) * sizeof(*obj->backends));
- if (! tmp)
- return -1;
-
- obj->backends = tmp;
- obj->backends[obj->backends_num] = strdup(backends[i]);
- if (! obj->backends[obj->backends_num])
- return -1;
-
- ++obj->backends_num;
- }
- return 0;
-} /* record_backends */
-
-static int
-store_obj(store_obj_t *obj, sdb_store_obj_t **updated_obj)
-{
- sdb_store_obj_t *old, *new;
- int status = 0;
-
- assert(obj->parent_tree);
-
- if (obj->last_update <= 0)
- obj->last_update = sdb_gettime();
-
- old = STORE_OBJ(sdb_avltree_lookup(obj->parent_tree, obj->name));
- if (old) {
- if (old->last_update > obj->last_update) {
- sdb_log(SDB_LOG_DEBUG, "store: Cannot update %s '%s' - "
- "value too old (%"PRIsdbTIME" < %"PRIsdbTIME")",
- SDB_STORE_TYPE_TO_NAME(obj->type), obj->name,
- obj->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 == obj->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 {
- sdb_time_t interval = obj->last_update - old->last_update;
- old->last_update = obj->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 {
- if (obj->type == SDB_ATTRIBUTE) {
- /* the value will be updated by the caller */
- new = STORE_OBJ(sdb_object_create(obj->name, attribute_type,
- obj->type, obj->last_update, NULL));
- }
- else {
- sdb_type_t t;
- t = obj->type == SDB_HOST
- ? host_type
- : obj->type == SDB_SERVICE
- ? service_type
- : metric_type;
- new = STORE_OBJ(sdb_object_create(obj->name, t,
- obj->type, obj->last_update));
- }
-
- if (new) {
- status = sdb_avltree_insert(obj->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 create %s '%s': %s",
- SDB_STORE_TYPE_TO_NAME(obj->type), obj->name,
- sdb_strerror(errno, errbuf, sizeof(errbuf)));
- status = -1;
- }
- }
-
- if (status < 0)
- return status;
- assert(new);
-
- if (new->parent != obj->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(obj->parent));
- new->parent = obj->parent;
- }
-
- if (updated_obj)
- *updated_obj = new;
-
- if (record_backends(new, obj->backends, obj->backends_num))
- return -1;
- return status;
-} /* store_obj */
-
-static int
-store_metric_store(sdb_metric_t *metric, sdb_store_metric_t *m)
-{
- char *type = metric->store.type;
- char *id = metric->store.id;
-
- if ((! metric->store.type) || strcasecmp(metric->store.type, m->store.type)) {
- if (! (type = strdup(m->store.type)))
- return -1;
- }
- if ((! metric->store.id) || strcasecmp(metric->store.id, m->store.id)) {
- if (! (id = strdup(m->store.id))) {
- if (type != metric->store.type)
- free(type);
- return -1;
- }
- }
-
- if (type != metric->store.type) {
- if (metric->store.type)
- free(metric->store.type);
- metric->store.type = type;
- }
- if (id != metric->store.id) {
- if (metric->store.id)
- free(metric->store.id);
- metric->store.id = id;
- }
- return 0;
-} /* store_metric_store */
-
-/* The store's host_lock has to be acquired before calling this function. */
-static sdb_avltree_t *
-get_host_children(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 */
-
-/*
- * store writer API
- */
-
-static int
-store_attribute(sdb_store_attribute_t *attr, sdb_object_t *user_data)
-{
- sdb_store_t *st = SDB_STORE(user_data);
- store_obj_t obj = STORE_OBJ_INIT;
- sdb_store_obj_t *new = NULL;
- const char *hostname;
- host_t *host;
-
- sdb_avltree_t *children = NULL;
- int status = 0;
-
- if ((! attr) || (! attr->parent) || (! attr->key))
- return -1;
-
- hostname = attr->hostname;
- if (attr->parent_type == SDB_HOST)
- hostname = attr->parent;
- if (! hostname)
- return -1;
-
- pthread_rwlock_wrlock(&st->host_lock);
- host = HOST(sdb_avltree_lookup(st->hosts, hostname));
- if (! host) {
- sdb_log(SDB_LOG_ERR, "store: Failed to store attribute '%s' - "
- "host '%s' not found", attr->key, hostname);
- status = -1;
- }
-
- switch (attr->parent_type) {
- case SDB_HOST:
- obj.parent = STORE_OBJ(host);
- obj.parent_tree = get_host_children(host, SDB_ATTRIBUTE);
- break;
- case SDB_SERVICE:
- children = get_host_children(host, SDB_SERVICE);
- break;
- case SDB_METRIC:
- children = get_host_children(host, SDB_METRIC);
- break;
- default:
- status = -1;
- break;
- }
-
- if (children) {
- obj.parent = STORE_OBJ(sdb_avltree_lookup(children, attr->parent));
- if (! obj.parent) {
- sdb_log(SDB_LOG_ERR, "store: Failed to store attribute '%s' - "
- "%s '%s/%s' not found", attr->key,
- SDB_STORE_TYPE_TO_NAME(attr->parent_type),
- attr->hostname, attr->parent);
- status = -1;
- }
- else
- obj.parent_tree = attr->parent_type == SDB_SERVICE
- ? SVC(obj.parent)->attributes
- : METRIC(obj.parent)->attributes;
- }
-
- obj.type = SDB_ATTRIBUTE;
- obj.name = attr->key;
- obj.last_update = attr->last_update;
- obj.backends = attr->backends;
- obj.backends_num = attr->backends_num;
- if (! status)
- status = store_obj(&obj, &new);
-
- if (! status) {
- assert(new);
- /* update the value if it changed */
- if (sdb_data_cmp(&ATTR(new)->value, &attr->value))
- if (sdb_data_copy(&ATTR(new)->value, &attr->value))
- status = -1;
- }
-
- if (obj.parent != STORE_OBJ(host))
- sdb_object_deref(SDB_OBJ(obj.parent));
- sdb_object_deref(SDB_OBJ(host));
- pthread_rwlock_unlock(&st->host_lock);
-
- return status;
-} /* store_attribute */
-
-static int
-store_host(sdb_store_host_t *host, sdb_object_t *user_data)
-{
- sdb_store_t *st = SDB_STORE(user_data);
- store_obj_t obj = { NULL, st->hosts, SDB_HOST, NULL, 0, NULL, 0 };
- int status = 0;
-
- if ((! host) || (! host->name))
- return -1;
-
- obj.name = host->name;
- obj.last_update = host->last_update;
- obj.backends = host->backends;
- obj.backends_num = host->backends_num;
- pthread_rwlock_wrlock(&st->host_lock);
- status = store_obj(&obj, NULL);
- pthread_rwlock_unlock(&st->host_lock);
-
- return status;
-} /* store_host */
-
-static int
-store_service(sdb_store_service_t *service, sdb_object_t *user_data)
-{
- sdb_store_t *st = SDB_STORE(user_data);
- store_obj_t obj = STORE_OBJ_INIT;
- host_t *host;
-
- int status = 0;
-
- if ((! service) || (! service->hostname) || (! service->name))
- return -1;
-
- pthread_rwlock_wrlock(&st->host_lock);
- host = HOST(sdb_avltree_lookup(st->hosts, service->hostname));
- obj.parent = STORE_OBJ(host);
- obj.parent_tree = get_host_children(host, SDB_SERVICE);
- obj.type = SDB_SERVICE;
- if (! obj.parent_tree) {
- sdb_log(SDB_LOG_ERR, "store: Failed to store service '%s' - "
- "host '%s' not found", service->name, service->hostname);
- status = -1;
- }
-
- obj.name = service->name;
- obj.last_update = service->last_update;
- obj.backends = service->backends;
- obj.backends_num = service->backends_num;
- if (! status)
- status = store_obj(&obj, NULL);
-
- sdb_object_deref(SDB_OBJ(host));
- pthread_rwlock_unlock(&st->host_lock);
- return status;
-} /* store_service */
-
-static int
-store_metric(sdb_store_metric_t *metric, sdb_object_t *user_data)
-{
- sdb_store_t *st = SDB_STORE(user_data);
- store_obj_t obj = STORE_OBJ_INIT;
- sdb_store_obj_t *new = NULL;
- host_t *host;
-
- int status = 0;
-
- if ((! metric) || (! metric->hostname) || (! metric->name))
- return -1;
-
- if ((metric->store.type != NULL) != (metric->store.id != NULL))
- return -1;
-
- pthread_rwlock_wrlock(&st->host_lock);
- host = HOST(sdb_avltree_lookup(st->hosts, metric->hostname));
- obj.parent = STORE_OBJ(host);
- obj.parent_tree = get_host_children(host, SDB_METRIC);
- obj.type = SDB_METRIC;
- if (! obj.parent_tree) {
- sdb_log(SDB_LOG_ERR, "store: Failed to store metric '%s' - "
- "host '%s' not found", metric->name, metric->hostname);
- status = -1;
- }
-
- obj.name = metric->name;
- obj.last_update = metric->last_update;
- obj.backends = metric->backends;
- obj.backends_num = metric->backends_num;
- if (! status)
- status = store_obj(&obj, &new);
- sdb_object_deref(SDB_OBJ(host));
-
- if (status) {
- pthread_rwlock_unlock(&st->host_lock);
- return status;
- }
-
- assert(new);
- if (metric->store.type && metric->store.id)
- if (store_metric_store(METRIC(new), metric))
- status = -1;
- pthread_rwlock_unlock(&st->host_lock);
- return status;
-} /* store_metric */
-
-sdb_store_writer_t sdb_store_writer = {
- store_host, store_service, store_metric, store_attribute,
-};
-
-static sdb_object_t *
-prepare_query(sdb_ast_node_t *ast,
- sdb_strbuf_t __attribute__((unused)) *errbuf,
- sdb_object_t __attribute__((unused)) *user_data)
-{
- return SDB_OBJ(sdb_store_query_prepare(ast));
-} /* prepare_query */
-
-static int
-execute_query(sdb_object_t *q,
- sdb_store_writer_t *w, sdb_object_t *wd, sdb_strbuf_t *errbuf,
- sdb_object_t *user_data)
-{
- return sdb_store_query_execute(SDB_STORE(user_data),
- QUERY(q), w, wd, errbuf);
-} /* execute_query */
-
-sdb_store_reader_t sdb_store_reader = {
- prepare_query, execute_query,
-};
-
-/*
- * public API
- */
-
-sdb_store_t *
-sdb_store_create(void)
-{
- return SDB_STORE(sdb_object_create("store", store_type));
-} /* sdb_store_create */
-
-int
-sdb_store_host(sdb_store_t *store, const char *name, sdb_time_t last_update)
-{
- sdb_store_host_t host = {
- name, last_update, 0, NULL, 0,
- };
- return store_host(&host, SDB_OBJ(store));
-} /* sdb_store_host */
-
-int
-sdb_store_service(sdb_store_t *store, const char *hostname, const char *name,
- sdb_time_t last_update)
-{
- sdb_store_service_t service = {
- hostname, name, last_update, 0, NULL, 0,
- };
- return store_service(&service, SDB_OBJ(store));
-} /* sdb_store_service */
-
-int
-sdb_store_metric(sdb_store_t *store, const char *hostname, const char *name,
- sdb_metric_store_t *metric_store, sdb_time_t last_update)
-{
- sdb_store_metric_t metric = {
- hostname, name, { NULL, NULL }, last_update, 0, NULL, 0,
- };
- if (metric_store) {
- metric.store.type = metric_store->type;
- metric.store.id = metric_store->id;
- }
- return store_metric(&metric, SDB_OBJ(store));
-} /* sdb_store_metric */
-
-int
-sdb_store_attribute(sdb_store_t *store, const char *hostname,
- const char *key, const sdb_data_t *value, sdb_time_t last_update)
-{
- sdb_store_attribute_t attr = {
- NULL, SDB_HOST, hostname, key, SDB_DATA_INIT, last_update, 0, NULL, 0,
- };
- if (value) {
- attr.value = *value;
- }
- return store_attribute(&attr, SDB_OBJ(store));
-} /* sdb_store_attribute */
-
-int
-sdb_store_service_attr(sdb_store_t *store, const char *hostname,
- const char *service, const char *key, const sdb_data_t *value,
- sdb_time_t last_update)
-{
- sdb_store_attribute_t attr = {
- hostname, SDB_SERVICE, service, key, SDB_DATA_INIT, last_update, 0, NULL, 0,
- };
- if (value) {
- attr.value = *value;
- }
- return store_attribute(&attr, SDB_OBJ(store));
-} /* sdb_store_service_attr */
-
-int
-sdb_store_metric_attr(sdb_store_t *store, const char *hostname,
- const char *metric, const char *key, const sdb_data_t *value,
- sdb_time_t last_update)
-{
- sdb_store_attribute_t attr = {
- hostname, SDB_METRIC, metric, key, SDB_DATA_INIT, last_update, 0, NULL, 0,
- };
- if (value) {
- attr.value = *value;
- }
- return store_attribute(&attr, SDB_OBJ(store));
-} /* sdb_store_metric_attr */
-
-sdb_store_obj_t *
-sdb_store_get_host(sdb_store_t *store, const char *name)
-{
- host_t *host;
-
- if ((! store) || (! name))
- return NULL;
-
- host = HOST(sdb_avltree_lookup(store->hosts, name));
- if (! host)
- return NULL;
-
- return STORE_OBJ(host);
-} /* sdb_store_get_host */
-
-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_get_field(sdb_store_obj_t *obj, int field, sdb_data_t *res)
-{
- sdb_data_t tmp;
-
- if (! obj)
- return -1;
-
- 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);
- case SDB_FIELD_TIMESERIES:
- if (obj->type != SDB_METRIC)
- return -1;
- tmp.type = SDB_TYPE_BOOLEAN;
- tmp.data.boolean = METRIC(obj)->store.type != NULL;
- default:
- return -1;
- }
- if (res)
- *res = tmp;
- else
- sdb_data_free_datum(&tmp);
- return 0;
-} /* sdb_store_get_field */
-
-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;
-
- if ((! obj) || (! name))
- return -1;
-
- 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;
-
- if (! tree)
- return -1;
-
- 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 */
-
-int
-sdb_store_scan(sdb_store_t *store, 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 ((! store) || (! 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(&store->host_lock);
- host_iter = sdb_avltree_get_iter(store->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_avltree_iter_destroy(iter);
- if (status)
- break;
- }
-
- sdb_avltree_iter_destroy(host_iter);
- pthread_rwlock_unlock(&store->host_lock);
- return status;
-} /* sdb_store_scan */
-
-/* vim: set tw=78 sw=4 ts=4 noexpandtab : */
-