#include "common.h"
RRDHOST *localhost = NULL;
+size_t rrd_hosts_available = 0;
+netdata_rwlock_t rrd_rwlock = NETDATA_RWLOCK_INITIALIZER;
-pthread_rwlock_t rrd_rwlock = PTHREAD_RWLOCK_INITIALIZER;
-
+time_t rrdset_free_obsolete_time = 3600;
+time_t rrdhost_free_orphan_time = 3600;
// ----------------------------------------------------------------------------
// RRDHOST index
.rwlock = AVL_LOCK_INITIALIZER
};
-RRDHOST *rrdhost_find(const char *guid, uint32_t hash) {
+RRDHOST *rrdhost_find_by_guid(const char *guid, uint32_t hash) {
debug(D_RRDHOST, "Searching in index for host with guid '%s'", guid);
RRDHOST tmp;
return (RRDHOST *)avl_search_lock(&(rrdhost_root_index), (avl *) &tmp);
}
+RRDHOST *rrdhost_find_by_hostname(const char *hostname, uint32_t hash) {
+ if(unlikely(!strcmp(hostname, "localhost")))
+ return localhost;
+
+ if(unlikely(!hash)) hash = simple_hash(hostname);
+
+ rrd_rdlock();
+ RRDHOST *host;
+ rrdhost_foreach_read(host) {
+ if(unlikely((hash == host->hash_hostname && !strcmp(hostname, host->hostname)))) {
+ rrd_unlock();
+ return host;
+ }
+ }
+ rrd_unlock();
+
+ return NULL;
+}
+
#define rrdhost_index_add(rrdhost) (RRDHOST *)avl_insert_lock(&(rrdhost_root_index), (avl *)(rrdhost))
#define rrdhost_index_del(rrdhost) (RRDHOST *)avl_remove_lock(&(rrdhost_root_index), (avl *)(rrdhost))
const char *guid,
const char *os,
int update_every,
- int entries,
+ long entries,
RRD_MEMORY_MODE memory_mode,
int health_enabled,
int rrdpush_enabled,
char *rrdpush_api_key,
int is_localhost
) {
-
debug(D_RRDHOST, "Host '%s': adding with guid '%s'", hostname, guid);
+ rrd_check_wrlock();
+
RRDHOST *host = callocz(1, sizeof(RRDHOST));
- host->rrd_update_every = update_every;
- host->rrd_history_entries = entries;
+ host->rrd_update_every = (update_every > 0)?update_every:1;
+ host->rrd_history_entries = align_entries_to_pagesize(memory_mode, entries);
host->rrd_memory_mode = memory_mode;
host->health_enabled = (memory_mode == RRD_MEMORY_MODE_NONE)? 0 : health_enabled;
host->rrdpush_enabled = (rrdpush_enabled && rrdpush_destination && *rrdpush_destination && rrdpush_api_key && *rrdpush_api_key);
host->rrdpush_pipe[1] = -1;
host->rrdpush_socket = -1;
- pthread_mutex_init(&host->rrdpush_mutex, NULL);
- pthread_rwlock_init(&host->rrdhost_rwlock, NULL);
+ netdata_mutex_init(&host->rrdpush_mutex);
+ netdata_rwlock_init(&host->rrdhost_rwlock);
rrdhost_init_hostname(host, hostname);
rrdhost_init_machine_guid(host, guid);
avl_init_lock(&(host->rrdfamily_root_index), rrdfamily_compare);
avl_init_lock(&(host->variables_root_index), rrdvar_compare);
+ if(config_get_boolean(CONFIG_SECTION_GLOBAL, "delete obsolete charts files", 1))
+ rrdhost_flag_set(host, RRDHOST_DELETE_OBSOLETE_FILES);
+
+ if(config_get_boolean(CONFIG_SECTION_GLOBAL, "delete orphan hosts files", 1) && !is_localhost)
+ rrdhost_flag_set(host, RRDHOST_DELETE_ORPHAN_FILES);
+
+
// ------------------------------------------------------------------------
// initialize health variables
else
host->health_log.max = (unsigned int)n;
- pthread_rwlock_init(&(host->health_log.alarm_log_rwlock), NULL);
+ netdata_rwlock_init(&host->health_log.alarm_log_rwlock);
char filename[FILENAME_MAX + 1];
int r = mkdir(host->varlib_dir, 0775);
if(r != 0 && errno != EEXIST)
error("Host '%s': cannot create directory '%s'", host->hostname, host->varlib_dir);
+ }
- snprintfz(filename, FILENAME_MAX, "%s/health", host->varlib_dir);
- r = mkdir(filename, 0775);
- if(r != 0 && errno != EEXIST)
- error("Host '%s': cannot create directory '%s'", host->hostname, filename);
- }
+ }
+ if(host->health_enabled) {
+ snprintfz(filename, FILENAME_MAX, "%s/health", host->varlib_dir);
+ int r = mkdir(filename, 0775);
+ if(r != 0 && errno != EEXIST)
+ error("Host '%s': cannot create directory '%s'", host->hostname, filename);
}
snprintfz(filename, FILENAME_MAX, "%s/health/health-log.db", host->varlib_dir);
// ------------------------------------------------------------------------
// link it and add it to the index
- rrd_wrlock();
-
if(is_localhost) {
host->next = localhost;
localhost = host;
}
else {
info("Host '%s' with guid '%s' initialized"
- ", os: %s"
- ", update every: %d"
- ", memory mode: %s"
- ", history entries: %d"
- ", streaming: %s"
- " to: '%s' (api key: '%s')"
- ", health: %s"
- ", cache_dir: '%s'"
- ", varlib_dir: '%s'"
- ", health_log: '%s'"
- ", alarms default handler: '%s'"
- ", alarms default recipient: '%s'"
+ ", os %s"
+ ", update every %d"
+ ", memory mode %s"
+ ", history entries %ld"
+ ", streaming %s"
+ " (to '%s' with api key '%s')"
+ ", health %s"
+ ", cache_dir '%s'"
+ ", varlib_dir '%s'"
+ ", health_log '%s'"
+ ", alarms default handler '%s'"
+ ", alarms default recipient '%s'"
, host->hostname
, host->machine_guid
, host->os
, rrd_memory_mode_name(host->rrd_memory_mode)
, host->rrd_history_entries
, host->rrdpush_enabled?"enabled":"disabled"
- , host->rrdpush_destination
- , host->rrdpush_api_key
+ , host->rrdpush_destination?host->rrdpush_destination:""
+ , host->rrdpush_api_key?host->rrdpush_api_key:""
, host->health_enabled?"enabled":"disabled"
, host->cache_dir
, host->varlib_dir
);
}
- rrd_unlock();
+ rrd_hosts_available++;
return host;
}
, const char *guid
, const char *os
, int update_every
- , int history
+ , long history
, RRD_MEMORY_MODE mode
, int health_enabled
, int rrdpush_enabled
) {
debug(D_RRDHOST, "Searching for host '%s' with guid '%s'", hostname, guid);
- RRDHOST *host = rrdhost_find(guid, 0);
+ rrd_wrlock();
+ RRDHOST *host = rrdhost_find_by_guid(guid, 0);
if(!host) {
host = rrdhost_create(
hostname
if(strcmp(host->hostname, hostname)) {
char *t = host->hostname;
- char *n = strdupz(hostname);
- host->hostname = n;
+ host->hostname = strdupz(hostname);
+ host->hash_hostname = simple_hash(host->hostname);
freez(t);
}
error("Host '%s' has an update frequency of %d seconds, but the wanted one is %d seconds.", host->hostname, host->rrd_update_every, update_every);
if(host->rrd_history_entries != history)
- error("Host '%s' has history of %d entries, but the wanted one is %d entries.", host->hostname, host->rrd_history_entries, history);
+ error("Host '%s' has history of %ld entries, but the wanted one is %ld entries.", host->hostname, host->rrd_history_entries, history);
if(host->rrd_memory_mode != mode)
error("Host '%s' has memory mode '%s', but the wanted one is '%s'.", host->hostname, rrd_memory_mode_name(host->rrd_memory_mode), rrd_memory_mode_name(mode));
}
+ rrd_unlock();
+
+ rrdhost_cleanup_orphan(host);
return host;
}
+static inline int rrdhost_should_be_deleted(RRDHOST *host, RRDHOST *protected, time_t now) {
+ if(host != protected
+ && host != localhost
+ && !host->connected_senders
+ && host->senders_disconnected_time
+ && host->senders_disconnected_time + rrdhost_free_orphan_time < now)
+ return 1;
+
+ return 0;
+}
+
+void rrdhost_cleanup_orphan(RRDHOST *protected) {
+ time_t now = now_realtime_sec();
+
+ rrd_wrlock();
+
+ RRDHOST *host;
+
+restart_after_removal:
+ rrdhost_foreach_write(host) {
+ if(rrdhost_should_be_deleted(host, protected, now)) {
+ info("Host '%s' with machine guid '%s' is obsolete - cleaning up.", host->hostname, host->machine_guid);
+
+ if(rrdset_flag_check(host, RRDHOST_ORPHAN))
+ rrdhost_delete(host);
+ else
+ rrdhost_save(host);
+
+ rrdhost_free(host);
+ goto restart_after_removal;
+ }
+ }
+
+ rrd_unlock();
+}
+
// ----------------------------------------------------------------------------
// RRDHOST global / startup initialization
void rrd_init(char *hostname) {
+ rrdset_free_obsolete_time = config_get_number(CONFIG_SECTION_GLOBAL, "cleanup obsolete charts after seconds", rrdset_free_obsolete_time);
+
health_init();
registry_init();
rrdpush_init();
debug(D_RRDHOST, "Initializing localhost with hostname '%s'", hostname);
+ rrd_wrlock();
localhost = rrdhost_create(
hostname
, registry_get_this_machine_guid()
, default_rrdpush_api_key
, 1
);
+ rrd_unlock();
}
// ----------------------------------------------------------------------------
// RRDHOST - lock validations
// there are only used when NETDATA_INTERNAL_CHECKS is set
-void rrdhost_check_rdlock_int(RRDHOST *host, const char *file, const char *function, const unsigned long line) {
+void __rrdhost_check_rdlock(RRDHOST *host, const char *file, const char *function, const unsigned long line) {
debug(D_RRDHOST, "Checking read lock on host '%s'", host->hostname);
- int ret = pthread_rwlock_trywrlock(&host->rrdhost_rwlock);
+ int ret = netdata_rwlock_trywrlock(&host->rrdhost_rwlock);
if(ret == 0)
fatal("RRDHOST '%s' should be read-locked, but it is not, at function %s() at line %lu of file '%s'", host->hostname, function, line, file);
}
-void rrdhost_check_wrlock_int(RRDHOST *host, const char *file, const char *function, const unsigned long line) {
+void __rrdhost_check_wrlock(RRDHOST *host, const char *file, const char *function, const unsigned long line) {
debug(D_RRDHOST, "Checking write lock on host '%s'", host->hostname);
- int ret = pthread_rwlock_tryrdlock(&host->rrdhost_rwlock);
+ int ret = netdata_rwlock_tryrdlock(&host->rrdhost_rwlock);
if(ret == 0)
fatal("RRDHOST '%s' should be write-locked, but it is not, at function %s() at line %lu of file '%s'", host->hostname, function, line, file);
}
-void rrd_check_rdlock_int(const char *file, const char *function, const unsigned long line) {
+void __rrd_check_rdlock(const char *file, const char *function, const unsigned long line) {
debug(D_RRDHOST, "Checking read lock on all RRDs");
- int ret = pthread_rwlock_trywrlock(&rrd_rwlock);
+ int ret = netdata_rwlock_trywrlock(&rrd_rwlock);
if(ret == 0)
fatal("RRDs should be read-locked, but it are not, at function %s() at line %lu of file '%s'", function, line, file);
}
-void rrd_check_wrlock_int(const char *file, const char *function, const unsigned long line) {
+void __rrd_check_wrlock(const char *file, const char *function, const unsigned long line) {
debug(D_RRDHOST, "Checking write lock on all RRDs");
- int ret = pthread_rwlock_tryrdlock(&rrd_rwlock);
+ int ret = netdata_rwlock_tryrdlock(&rrd_rwlock);
if(ret == 0)
fatal("RRDs should be write-locked, but it are not, at function %s() at line %lu of file '%s'", function, line, file);
}
info("Freeing all memory for host '%s'...", host->hostname);
rrd_check_wrlock(); // make sure the RRDs are write locked
+
+ // stop a possibly running thread
+ rrdpush_sender_thread_stop(host);
+
rrdhost_wrlock(host); // lock this RRDHOST
// ------------------------------------------------------------------------
// ------------------------------------------------------------------------
// free it
- rrdpush_sender_thread_stop(host);
-
freez(host->os);
freez(host->cache_dir);
freez(host->varlib_dir);
freez(host->health_log_filename);
freez(host->hostname);
rrdhost_unlock(host);
+ netdata_rwlock_destroy(&host->health_log.alarm_log_rwlock);
+ netdata_rwlock_destroy(&host->rrdhost_rwlock);
freez(host);
- info("Host memory cleanup completed...");
+ rrd_hosts_available--;
}
void rrdhost_free_all(void) {
void rrdhost_save(RRDHOST *host) {
if(!host) return;
- info("Saving host '%s' database...", host->hostname);
+ info("Saving database of host '%s'...", host->hostname);
RRDSET *st;
- RRDDIM *rd;
// we get a write lock
// to ensure only one thread is saving the database
rrdset_foreach_write(st, host) {
rrdset_rdlock(st);
+ rrdset_save(st);
+ rrdset_unlock(st);
+ }
- if(st->rrd_memory_mode == RRD_MEMORY_MODE_SAVE) {
- debug(D_RRD_STATS, "Saving stats '%s' to '%s'.", st->name, st->cache_filename);
- savememory(st->cache_filename, st, st->memsize);
- }
+ rrdhost_unlock(host);
+}
- rrddim_foreach_read(rd, st) {
- if(likely(rd->rrd_memory_mode == RRD_MEMORY_MODE_SAVE)) {
- debug(D_RRD_STATS, "Saving dimension '%s' to '%s'.", rd->name, rd->cache_filename);
- savememory(rd->cache_filename, rd, rd->memsize);
- }
- }
+// ----------------------------------------------------------------------------
+// RRDHOST - delete files
+
+void rrdhost_delete(RRDHOST *host) {
+ if(!host) return;
+
+ info("Deleting database of host '%s'...", host->hostname);
+ RRDSET *st;
+
+ // we get a write lock
+ // to ensure only one thread is saving the database
+ rrdhost_wrlock(host);
+
+ rrdset_foreach_write(st, host) {
+ rrdset_rdlock(st);
+ rrdset_delete(st);
rrdset_unlock(st);
}
}
void rrdhost_save_all(void) {
- info("Saving database...");
+ info("Saving database [%zu hosts(s)]...", rrd_hosts_available);
rrd_rdlock();
rrd_unlock();
}
+
+void rrdhost_cleanup_obsolete(RRDHOST *host) {
+ time_t now = now_realtime_sec();
+
+ RRDSET *st;
+
+restart_after_removal:
+ rrdset_foreach_write(st, host) {
+ if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_OBSOLETE)
+ && st->last_accessed_time + rrdset_free_obsolete_time < now
+ && st->last_updated.tv_sec + rrdset_free_obsolete_time < now
+ && st->last_collected_time.tv_sec + rrdset_free_obsolete_time < now
+ )) {
+
+ rrdset_rdlock(st);
+
+ if(rrdhost_flag_check(host, RRDHOST_DELETE_OBSOLETE_FILES))
+ rrdset_delete(st);
+ else
+ rrdset_save(st);
+
+ rrdset_unlock(st);
+
+ rrdset_free(st);
+ goto restart_after_removal;
+ }
+ }
+}
projects / netdata.git / blobdiff