chrony_la_LIBADD = -lm
endif
+if BUILD_PLUGIN_CHECK_UPTIME
+pkglib_LTLIBRARIES += check_uptime.la
+check_uptime_la_SOURCES = src/check_uptime.c
+check_uptime_la_LDFLAGS = $(PLUGIN_LDFLAGS)
+endif
+
if BUILD_PLUGIN_CONNTRACK
pkglib_LTLIBRARIES += conntrack.la
conntrack_la_SOURCES = src/conntrack.c
AC_PLUGIN([ceph], [$plugin_ceph], [Ceph daemon statistics])
AC_PLUGIN([cgroups], [$plugin_cgroups], [CGroups CPU usage accounting])
AC_PLUGIN([chrony], [yes], [Chrony statistics])
+AC_PLUGIN([check_uptime], [yes], [Notify about uptime reset])
AC_PLUGIN([conntrack], [$plugin_conntrack], [nf_conntrack statistics])
AC_PLUGIN([contextswitch], [$plugin_contextswitch], [context switch statistics])
AC_PLUGIN([cpu], [$plugin_cpu], [CPU usage statistics])
AC_MSG_RESULT([ ceph . . . . . . . . $enable_ceph])
AC_MSG_RESULT([ cgroups . . . . . . . $enable_cgroups])
AC_MSG_RESULT([ chrony. . . . . . . . $enable_chrony])
+AC_MSG_RESULT([ check_uptime. . . . . $enable_check_uptime])
AC_MSG_RESULT([ conntrack . . . . . . $enable_conntrack])
AC_MSG_RESULT([ contextswitch . . . . $enable_contextswitch])
AC_MSG_RESULT([ cpu . . . . . . . . . $enable_cpu])
--- /dev/null
+/**
+ * collectd - src/check_uptime.c
+ * Copyright (C) 2007-2019 Florian Forster
+ * Copyright (C) 2019 Pavel V. Rochnyack
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; only version 2 of the License is applicable.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Author:
+ * Florian octo Forster <octo at collectd.org>
+ * Pavel Rochnyak <pavel2000 ngs.ru>
+ **/
+
+#include "collectd.h"
+#include "plugin.h"
+#include "utils/avltree/avltree.h"
+#include "utils/common/common.h"
+#include "utils_cache.h"
+
+/* Types are registered only in `config` phase, so access is not protected by
+ * locks */
+c_avl_tree_t *types_tree = NULL;
+
+static int format_uptime(unsigned long uptime_sec, char *buf, size_t bufsize) {
+
+ unsigned int uptime_days = uptime_sec / 24 / 3600;
+ uptime_sec -= uptime_days * 24 * 3600;
+ unsigned int uptime_hours = uptime_sec / 3600;
+ uptime_sec -= uptime_hours * 3600;
+ unsigned int uptime_mins = uptime_sec / 60;
+ uptime_sec -= uptime_mins * 60;
+
+ int ret = 0;
+ if (uptime_days) {
+ ret += snprintf(buf + ret, bufsize - ret, " %u day(s)", uptime_days);
+ }
+ if (uptime_days || uptime_hours) {
+ ret += snprintf(buf + ret, bufsize - ret, " %u hour(s)", uptime_hours);
+ }
+ if (uptime_days || uptime_hours || uptime_mins) {
+ ret += snprintf(buf + ret, bufsize - ret, " %u min", uptime_mins);
+ }
+ ret += snprintf(buf + ret, bufsize - ret, " %lu sec.", uptime_sec);
+ return ret;
+}
+
+static int cu_notify(enum cache_event_type_e event_type, const value_list_t *vl,
+ gauge_t old_uptime, gauge_t new_uptime) {
+ notification_t n;
+ NOTIFICATION_INIT_VL(&n, vl);
+
+ int status;
+ char *buf = n.message;
+ size_t bufsize = sizeof(n.message);
+
+ n.time = vl->time;
+
+ const char *service = "Service";
+ if (strcmp(vl->plugin, "uptime") == 0)
+ service = "Host";
+
+ switch (event_type) {
+ case CE_VALUE_NEW:
+ n.severity = NOTIF_OKAY;
+ status = snprintf(buf, bufsize, "%s is running.", service);
+ buf += status;
+ bufsize -= status;
+ break;
+ case CE_VALUE_UPDATE:
+ n.severity = NOTIF_WARNING;
+ status = snprintf(buf, bufsize, "%s just restarted.", service);
+ buf += status;
+ bufsize -= status;
+ break;
+ case CE_VALUE_EXPIRED:
+ n.severity = NOTIF_FAILURE;
+ status = snprintf(buf, bufsize, "%s is unreachable.", service);
+ buf += status;
+ bufsize -= status;
+ break;
+ }
+
+ if (!isnan(old_uptime)) {
+ status = snprintf(buf, bufsize, " Uptime was:");
+ buf += status;
+ bufsize -= status;
+
+ status = format_uptime(old_uptime, buf, bufsize);
+ buf += status;
+ bufsize -= status;
+
+ plugin_notification_meta_add_double(&n, "LastValue", old_uptime);
+ }
+
+ if (!isnan(new_uptime)) {
+ status = snprintf(buf, bufsize, " Uptime now:");
+ buf += status;
+ bufsize -= status;
+
+ status = format_uptime(new_uptime, buf, bufsize);
+ buf += status;
+ bufsize -= status;
+
+ plugin_notification_meta_add_double(&n, "CurrentValue", new_uptime);
+ }
+
+ plugin_dispatch_notification(&n);
+
+ plugin_notification_meta_free(n.meta);
+ return 0;
+}
+
+static int cu_cache_event(cache_event_t *event,
+ __attribute__((unused)) user_data_t *ud) {
+ gauge_t values_history[2];
+
+ /* For CE_VALUE_EXPIRED */
+ int ret;
+ value_t *values;
+ size_t values_num;
+ gauge_t old_uptime = NAN;
+
+ switch (event->type) {
+ case CE_VALUE_NEW:
+ DEBUG("check_uptime: CE_VALUE_NEW, %s", event->value_list_name);
+ if (c_avl_get(types_tree, event->value_list->type, NULL) == 0) {
+ event->ret = 1;
+ assert(event->value_list->values_len > 0);
+ cu_notify(CE_VALUE_NEW, event->value_list, NAN /* old */,
+ event->value_list->values[0].gauge /* new */);
+ }
+ break;
+ case CE_VALUE_UPDATE:
+ DEBUG("check_uptime: CE_VALUE_UPDATE, %s", event->value_list_name);
+ if (uc_get_history_by_name(event->value_list_name, values_history, 2, 1)) {
+ ERROR("check_uptime plugin: Failed to get value history for %s.",
+ event->value_list_name);
+ } else {
+ if (!isnan(values_history[0]) && !isnan(values_history[1]) &&
+ values_history[0] < values_history[1]) {
+ cu_notify(CE_VALUE_UPDATE, event->value_list,
+ values_history[1] /* old */, values_history[0] /* new */);
+ }
+ }
+ break;
+ case CE_VALUE_EXPIRED:
+ DEBUG("check_uptime: CE_VALUE_EXPIRED, %s", event->value_list_name);
+ ret = uc_get_value_by_name(event->value_list_name, &values, &values_num);
+ if (ret == 0) {
+ old_uptime = values[0].gauge;
+ sfree(values);
+ }
+
+ cu_notify(CE_VALUE_EXPIRED, event->value_list, old_uptime, NAN /* new */);
+ break;
+ }
+ return 0;
+}
+
+static int cu_config(oconfig_item_t *ci) {
+ if (types_tree == NULL) {
+ types_tree = c_avl_create((int (*)(const void *, const void *))strcmp);
+ if (types_tree == NULL) {
+ ERROR("check_uptime plugin: c_avl_create failed.");
+ return -1;
+ }
+ }
+
+ for (int i = 0; i < ci->children_num; ++i) {
+ oconfig_item_t *child = ci->children + i;
+ if (strcasecmp("Type", child->key) == 0) {
+ if ((child->values_num != 1) ||
+ (child->values[0].type != OCONFIG_TYPE_STRING)) {
+ WARNING("check_uptime plugin: The `Type' option needs exactly one "
+ "string argument.");
+ return -1;
+ }
+ char *type = child->values[0].value.string;
+
+ if (c_avl_get(types_tree, type, NULL) == 0) {
+ ERROR("check_uptime plugin: Type `%s' already added.", type);
+ return -1;
+ }
+
+ char *type_copy = strdup(type);
+ if (type_copy == NULL) {
+ ERROR("check_uptime plugin: strdup failed.");
+ return -1;
+ }
+
+ int status = c_avl_insert(types_tree, type_copy, NULL);
+ if (status != 0) {
+ ERROR("check_uptime plugin: c_avl_insert failed.");
+ sfree(type_copy);
+ return -1;
+ }
+ } else
+ WARNING("check_uptime plugin: Ignore unknown config option `%s'.",
+ child->key);
+ }
+
+ return 0;
+}
+
+static int cu_init(void) {
+ if (types_tree == NULL) {
+ types_tree = c_avl_create((int (*)(const void *, const void *))strcmp);
+ if (types_tree == NULL) {
+ ERROR("check_uptime plugin: c_avl_create failed.");
+ return -1;
+ }
+ /* Default configuration */
+ char *type = strdup("uptime");
+ if (type == NULL) {
+ ERROR("check_uptime plugin: strdup failed.");
+ return -1;
+ }
+ int status = c_avl_insert(types_tree, type, NULL);
+ if (status != 0) {
+ ERROR("check_uptime plugin: c_avl_insert failed.");
+ sfree(type);
+ return -1;
+ }
+ }
+
+ int ret = 0;
+ char *type;
+ void *val;
+ c_avl_iterator_t *iter = c_avl_get_iterator(types_tree);
+ while (c_avl_iterator_next(iter, (void *)&type, (void *)&val) == 0) {
+ data_set_t const *ds = plugin_get_ds(type);
+ if (ds == NULL) {
+ ERROR("check_uptime plugin: Failed to look up type \"%s\".", type);
+ ret = -1;
+ continue;
+ }
+ if (ds->ds_num != 1) {
+ ERROR("check_uptime plugin: The type \"%s\" has %" PRIsz " data sources. "
+ "Only types with a single GAUGE data source are supported.",
+ ds->type, ds->ds_num);
+ ret = -1;
+ continue;
+ }
+ if (ds->ds[0].type != DS_TYPE_GAUGE) {
+ ERROR("check_uptime plugin: The type \"%s\" has wrong data source type. "
+ "Only types with a single GAUGE data source are supported.",
+ ds->type);
+ ret = -1;
+ continue;
+ }
+ }
+ c_avl_iterator_destroy(iter);
+
+ if (ret == 0)
+ plugin_register_cache_event("check_uptime", cu_cache_event, NULL);
+
+ return ret;
+}
+
+void module_register(void) {
+ plugin_register_complex_config("check_uptime", cu_config);
+ plugin_register_init("check_uptime", cu_init);
+}
#@BUILD_PLUGIN_CEPH_TRUE@LoadPlugin ceph
#@BUILD_PLUGIN_CGROUPS_TRUE@LoadPlugin cgroups
#@BUILD_PLUGIN_CHRONY_TRUE@LoadPlugin chrony
+#@BUILD_PLUGIN_CHECK_UPTIME_TRUE@LoadPlugin check_uptime
#@BUILD_PLUGIN_CONNTRACK_TRUE@LoadPlugin conntrack
#@BUILD_PLUGIN_CONTEXTSWITCH_TRUE@LoadPlugin contextswitch
@BUILD_PLUGIN_CPU_TRUE@@BUILD_PLUGIN_CPU_TRUE@LoadPlugin cpu
=back
+=head2 Plugin C<check_uptime>
+
+The I<check_uptime plugin> designed to check and notify about host or service
+status based on I<uptime> metric.
+
+When new metric of I<uptime> type appears in cache, OK notification is sent.
+When new value for metric is less than previous value, WARNING notification is
+sent about host/service restart.
+When no new updates comes for metric and cache entry expires, then FAILURE
+notification is sent about unreachable host or service.
+
+By default (when no explicit configuration), plugin checks for I<uptime> metric.
+
+B<Synopsis:>
+
+ <Plugin "check_uptime">
+ Type "uptime"
+ Type "my_uptime_type"
+ </Plugin>
+
+=over 4
+
+=item B<Type> I<Type>
+
+Metric type to check for status/values. The type should consist single GAUGE
+data source.
+
+=back
+
=head2 Plugin C<chrony>
The C<chrony> plugin collects ntp data from a B<chronyd> server, such as clock
};
typedef struct read_func_s read_func_t;
+struct cache_event_func_s {
+ plugin_cache_event_cb callback;
+ char *name;
+ user_data_t user_data;
+ plugin_ctx_t plugin_ctx;
+};
+typedef struct cache_event_func_s cache_event_func_t;
+
struct write_queue_s;
typedef struct write_queue_s write_queue_t;
struct write_queue_s {
static llist_t *list_log;
static llist_t *list_notification;
+static size_t list_cache_event_num;
+static cache_event_func_t list_cache_event[32];
+
static fc_chain_t *pre_cache_chain;
static fc_chain_t *post_cache_chain;
static int register_callback(llist_t **list, /* {{{ */
const char *name, callback_func_t *cf) {
- llentry_t *le;
- char *key;
if (*list == NULL) {
*list = llist_create();
}
}
- key = strdup(name);
+ char *key = strdup(name);
if (key == NULL) {
ERROR("plugin: register_callback: strdup failed.");
destroy_callback(cf);
return -1;
}
- le = llist_search(*list, name);
+ llentry_t *le = llist_search(*list, name);
if (le == NULL) {
le = llentry_create(key, cf);
if (le == NULL) {
llist_append(*list, le);
} else {
- callback_func_t *old_cf;
-
- old_cf = le->value;
+ callback_func_t *old_cf = le->value;
le->value = cf;
P_WARNING("register_callback: "
return create_register_callback(&list_missing, name, (void *)callback, ud);
} /* int plugin_register_missing */
+EXPORT int plugin_register_cache_event(const char *name,
+ plugin_cache_event_cb callback,
+ user_data_t const *ud) {
+
+ if (name == NULL || callback == NULL)
+ return EINVAL;
+
+ char *name_copy = strdup(name);
+ if (name_copy == NULL) {
+ P_ERROR("plugin_register_cache_event: strdup failed.");
+ free_userdata(ud);
+ return ENOMEM;
+ }
+
+ if (list_cache_event_num >= 32) {
+ P_ERROR("plugin_register_cache_event: Too much cache event callbacks tried "
+ "to be registered.");
+ free_userdata(ud);
+ return ENOMEM;
+ }
+
+ for (size_t i = 0; i < list_cache_event_num; i++) {
+ cache_event_func_t *cef = &list_cache_event[i];
+ if (!cef->callback)
+ continue;
+
+ if (strcmp(name, cef->name) == 0) {
+ P_ERROR("plugin_register_cache_event: a callback named `%s' already "
+ "registered!",
+ name);
+ free_userdata(ud);
+ return -1;
+ }
+ }
+
+ user_data_t user_data;
+ if (ud == NULL) {
+ user_data = (user_data_t){
+ .data = NULL, .free_func = NULL,
+ };
+ } else {
+ user_data = *ud;
+ }
+
+ list_cache_event[list_cache_event_num] =
+ (cache_event_func_t){.callback = callback,
+ .name = name_copy,
+ .user_data = user_data,
+ .plugin_ctx = plugin_get_ctx()};
+ list_cache_event_num++;
+
+ return 0;
+} /* int plugin_register_cache_event */
+
EXPORT int plugin_register_shutdown(const char *name, int (*callback)(void)) {
return create_register_callback(&list_shutdown, name, (void *)callback, NULL);
} /* int plugin_register_shutdown */
return plugin_unregister(list_missing, name);
}
+EXPORT int plugin_unregister_cache_event(const char *name) {
+ for (size_t i = 0; i < list_cache_event_num; i++) {
+ cache_event_func_t *cef = &list_cache_event[i];
+ if (!cef->callback)
+ continue;
+ if (strcmp(name, cef->name) == 0) {
+ /* Mark callback as inactive, so mask in cache entries remains actual */
+ cef->callback = NULL;
+ sfree(cef->name);
+ free_userdata(&cef->user_data);
+ }
+ }
+ return 0;
+}
+
+static void destroy_cache_event_callbacks() {
+ for (size_t i = 0; i < list_cache_event_num; i++) {
+ cache_event_func_t *cef = &list_cache_event[i];
+ if (!cef->callback)
+ continue;
+ cef->callback = NULL;
+ sfree(cef->name);
+ free_userdata(&cef->user_data);
+ }
+}
+
EXPORT int plugin_unregister_shutdown(const char *name) {
return plugin_unregister(list_shutdown, name);
}
* the data isn't freed twice. */
destroy_all_callbacks(&list_flush);
destroy_all_callbacks(&list_missing);
+ destroy_cache_event_callbacks();
destroy_all_callbacks(&list_write);
destroy_all_callbacks(&list_notification);
return 0;
} /* int }}} plugin_dispatch_missing */
+void plugin_dispatch_cache_event(enum cache_event_type_e event_type,
+ unsigned long callbacks_mask, const char *name,
+ const value_list_t *vl) {
+ switch (event_type) {
+ case CE_VALUE_NEW:
+ callbacks_mask = 0;
+ for (size_t i = 0; i < list_cache_event_num; i++) {
+ cache_event_func_t *cef = &list_cache_event[i];
+ plugin_cache_event_cb callback = cef->callback;
+
+ if (!callback)
+ continue;
+
+ cache_event_t event = (cache_event_t){.type = event_type,
+ .value_list = vl,
+ .value_list_name = name,
+ .ret = 0};
+
+ plugin_ctx_t old_ctx = plugin_set_ctx(cef->plugin_ctx);
+ int status = (*callback)(&event, &cef->user_data);
+ plugin_set_ctx(old_ctx);
+
+ if (status != 0) {
+ ERROR("plugin_dispatch_cache_event: Callback \"%s\" failed with status "
+ "%i for event NEW.",
+ cef->name, status);
+ } else {
+ if (event.ret) {
+ DEBUG(
+ "plugin_dispatch_cache_event: Callback \"%s\" subscribed to %s.",
+ cef->name, name);
+ callbacks_mask |= (1 << (i));
+ } else {
+ DEBUG("plugin_dispatch_cache_event: Callback \"%s\" ignores %s.",
+ cef->name, name);
+ }
+ }
+ }
+
+ if (callbacks_mask)
+ uc_set_callbacks_mask(name, callbacks_mask);
+
+ break;
+ case CE_VALUE_UPDATE:
+ case CE_VALUE_EXPIRED:
+ for (size_t i = 0; i < list_cache_event_num; i++) {
+ cache_event_func_t *cef = &list_cache_event[i];
+ plugin_cache_event_cb callback = cef->callback;
+
+ if (!callback)
+ continue;
+
+ if (callbacks_mask && (1 << (i)) == 0)
+ continue;
+
+ cache_event_t event = (cache_event_t){.type = event_type,
+ .value_list = vl,
+ .value_list_name = name,
+ .ret = 0};
+
+ plugin_ctx_t old_ctx = plugin_set_ctx(cef->plugin_ctx);
+ int status = (*callback)(&event, &cef->user_data);
+ plugin_set_ctx(old_ctx);
+
+ if (status != 0) {
+ ERROR("plugin_dispatch_cache_event: Callback \"%s\" failed with status "
+ "%i for event %s.",
+ cef->name, status,
+ ((event_type == CE_VALUE_UPDATE) ? "UPDATE" : "EXPIRED"));
+ }
+ }
+ break;
+ }
+ return;
+}
+
static int plugin_dispatch_values_internal(value_list_t *vl) {
int status;
static c_complain_t no_write_complaint = C_COMPLAIN_INIT_STATIC;
};
typedef struct user_data_s user_data_t;
+enum cache_event_type_e { CE_VALUE_NEW, CE_VALUE_UPDATE, CE_VALUE_EXPIRED };
+
+typedef struct cache_event_s {
+ enum cache_event_type_e type;
+ const value_list_t *value_list;
+ const char *value_list_name;
+ int ret;
+} cache_event_t;
+
struct plugin_ctx_s {
char *name;
cdtime_t interval;
* callbacks should be called, greater than zero if no more callbacks should be
* called. */
typedef int (*plugin_missing_cb)(const value_list_t *, user_data_t *);
+/* "cache event" callback. CE_VALUE_NEW events are sent to all registered
+ * callbacks. Callback should check if it interested in further CE_VALUE_UPDATE
+ * and CE_VALUE_EXPIRED events for metric and set event->ret = 1 if so.
+ */
+typedef int (*plugin_cache_event_cb)(cache_event_t *, user_data_t *);
typedef void (*plugin_log_cb)(int severity, const char *message, user_data_t *);
typedef int (*plugin_shutdown_cb)(void);
typedef int (*plugin_notification_cb)(const notification_t *, user_data_t *);
user_data_t const *user_data);
int plugin_register_missing(const char *name, plugin_missing_cb callback,
user_data_t const *user_data);
+int plugin_register_cache_event(const char *name,
+ plugin_cache_event_cb callback,
+ user_data_t const *ud);
int plugin_register_shutdown(const char *name, plugin_shutdown_cb callback);
int plugin_register_data_set(const data_set_t *ds);
int plugin_register_log(const char *name, plugin_log_cb callback,
int plugin_unregister_write(const char *name);
int plugin_unregister_flush(const char *name);
int plugin_unregister_missing(const char *name);
+int plugin_unregister_cache_event(const char *name);
int plugin_unregister_shutdown(const char *name);
int plugin_unregister_data_set(const char *name);
int plugin_unregister_log(const char *name);
int store_type, ...);
int plugin_dispatch_missing(const value_list_t *vl);
+void plugin_dispatch_cache_event(enum cache_event_type_e event_type,
+ unsigned long callbacks_mask, const char *name,
+ const value_list_t *vl);
int plugin_dispatch_notification(const notification_t *notif);
size_t history_length;
meta_data_t *meta;
+ unsigned long callbacks_mask;
} cache_entry_t;
struct uc_iter_s {
static int uc_insert(const data_set_t *ds, const value_list_t *vl,
const char *key) {
- char *key_copy;
- cache_entry_t *ce;
-
/* `cache_lock' has been locked by `uc_update' */
- key_copy = strdup(key);
+ char *key_copy = strdup(key);
if (key_copy == NULL) {
ERROR("uc_insert: strdup failed.");
return -1;
}
- ce = cache_alloc(ds->ds_num);
+ cache_entry_t *ce = cache_alloc(ds->ds_num);
if (ce == NULL) {
sfree(key_copy);
ERROR("uc_insert: cache_alloc (%" PRIsz ") failed.", ds->ds_num);
char *key;
cdtime_t time;
cdtime_t interval;
+ unsigned long callbacks_mask;
} *expired = NULL;
size_t expired_num = 0;
expired[expired_num].key = strdup(key);
expired[expired_num].time = ce->last_time;
expired[expired_num].interval = ce->interval;
+ expired[expired_num].callbacks_mask = ce->callbacks_mask;
if (expired[expired_num].key == NULL) {
ERROR("uc_check_timeout: strdup failed.");
}
plugin_dispatch_missing(&vl);
+
+ if (expired[i].callbacks_mask)
+ plugin_dispatch_cache_event(CE_VALUE_EXPIRED, expired[i].callbacks_mask,
+ expired[i].key, &vl);
} /* for (i = 0; i < expired_num; i++) */
/* Now actually remove all the values from the cache. We don't re-evaluate
int uc_update(const data_set_t *ds, const value_list_t *vl) {
char name[6 * DATA_MAX_NAME_LEN];
- cache_entry_t *ce = NULL;
- int status;
if (FORMAT_VL(name, sizeof(name), vl) != 0) {
ERROR("uc_update: FORMAT_VL failed.");
pthread_mutex_lock(&cache_lock);
- status = c_avl_get(cache_tree, name, (void *)&ce);
+ cache_entry_t *ce = NULL;
+ int status = c_avl_get(cache_tree, name, (void *)&ce);
if (status != 0) /* entry does not yet exist */
{
status = uc_insert(ds, vl, name);
pthread_mutex_unlock(&cache_lock);
+
+ if (status == 0)
+ plugin_dispatch_cache_event(CE_VALUE_NEW, 0 /* mask */, name, vl);
+
return status;
}
ce->last_update = cdtime();
ce->interval = vl->interval;
+ /* Check if cache entry has registered callbacks */
+ unsigned long callbacks_mask = ce->callbacks_mask;
+
pthread_mutex_unlock(&cache_lock);
+ if (callbacks_mask)
+ plugin_dispatch_cache_event(CE_VALUE_UPDATE, callbacks_mask, name, vl);
+
return 0;
} /* int uc_update */
+int uc_set_callbacks_mask(const char *name, unsigned long mask) {
+ pthread_mutex_lock(&cache_lock);
+ cache_entry_t *ce = NULL;
+ int status = c_avl_get(cache_tree, name, (void *)&ce);
+ if (status != 0) { /* Ouch, just created entry disappeared ?! */
+ ERROR("uc_set_callbacks_mask: Couldn't find %s entry!", name);
+ pthread_mutex_unlock(&cache_lock);
+ return -1;
+ }
+ DEBUG("uc_set_callbacks_mask: set mask for \"%s\" to %lu.", name, mask);
+ ce->callbacks_mask = mask;
+ pthread_mutex_unlock(&cache_lock);
+ return 0;
+}
+
int uc_get_rate_by_name(const char *name, gauge_t **ret_values,
size_t *ret_values_num) {
gauge_t *ret = NULL;
int uc_set_hits(const data_set_t *ds, const value_list_t *vl, int hits);
int uc_inc_hits(const data_set_t *ds, const value_list_t *vl, int step);
+int uc_set_callbacks_mask(const char *name, unsigned long callbacks_mask);
+
int uc_get_history(const data_set_t *ds, const value_list_t *vl,
gauge_t *ret_history, size_t num_steps, size_t num_ds);
int uc_get_history_by_name(const char *name, gauge_t *ret_history,
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