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-rwxr-xr-x[-rw-r--r--]database/engine/rrdengineapi.c353
1 files changed, 257 insertions, 96 deletions
diff --git a/database/engine/rrdengineapi.c b/database/engine/rrdengineapi.c
index baf4a9973..7b2ff5b72 100644..100755
--- a/database/engine/rrdengineapi.c
+++ b/database/engine/rrdengineapi.c
@@ -2,65 +2,148 @@
#include "rrdengine.h"
/* Default global database instance */
-static struct rrdengine_instance default_global_ctx;
+struct rrdengine_instance multidb_ctx;
int default_rrdeng_page_cache_mb = 32;
-int default_rrdeng_disk_quota_mb = RRDENG_MIN_DISK_SPACE_MB;
+int default_rrdeng_disk_quota_mb = 256;
+int default_multidb_disk_quota_mb = 256;
+/* Default behaviour is to unblock data collection if the page cache is full of dirty pages by dropping metrics */
+uint8_t rrdeng_drop_metrics_under_page_cache_pressure = 1;
-/*
- * Gets a handle for storing metrics to the database.
- * The handle must be released with rrdeng_store_metric_final().
- */
-void rrdeng_store_metric_init(RRDDIM *rd)
+static inline struct rrdengine_instance *get_rrdeng_ctx_from_host(RRDHOST *host)
+{
+ return host->rrdeng_ctx;
+}
+
+/* This UUID is not unique across hosts */
+void rrdeng_generate_legacy_uuid(const char *dim_id, char *chart_id, uuid_t *ret_uuid)
{
- struct rrdeng_collect_handle *handle;
- struct page_cache *pg_cache;
- struct rrdengine_instance *ctx;
- uuid_t temp_id;
- Pvoid_t *PValue;
- struct pg_cache_page_index *page_index;
EVP_MD_CTX *evpctx;
unsigned char hash_value[EVP_MAX_MD_SIZE];
unsigned int hash_len;
- //&default_global_ctx; TODO: test this use case or remove it?
+ evpctx = EVP_MD_CTX_create();
+ EVP_DigestInit_ex(evpctx, EVP_sha256(), NULL);
+ EVP_DigestUpdate(evpctx, dim_id, strlen(dim_id));
+ EVP_DigestUpdate(evpctx, chart_id, strlen(chart_id));
+ EVP_DigestFinal_ex(evpctx, hash_value, &hash_len);
+ EVP_MD_CTX_destroy(evpctx);
+ fatal_assert(hash_len > sizeof(uuid_t));
+ memcpy(ret_uuid, hash_value, sizeof(uuid_t));
+}
- ctx = rd->rrdset->rrdhost->rrdeng_ctx;
- pg_cache = &ctx->pg_cache;
- handle = &rd->state->handle.rrdeng;
- handle->ctx = ctx;
+/* Transform legacy UUID to be unique across hosts deterministacally */
+void rrdeng_convert_legacy_uuid_to_multihost(char machine_guid[GUID_LEN + 1], uuid_t *legacy_uuid, uuid_t *ret_uuid)
+{
+ EVP_MD_CTX *evpctx;
+ unsigned char hash_value[EVP_MAX_MD_SIZE];
+ unsigned int hash_len;
evpctx = EVP_MD_CTX_create();
EVP_DigestInit_ex(evpctx, EVP_sha256(), NULL);
- EVP_DigestUpdate(evpctx, rd->id, strlen(rd->id));
- EVP_DigestUpdate(evpctx, rd->rrdset->id, strlen(rd->rrdset->id));
+ EVP_DigestUpdate(evpctx, machine_guid, GUID_LEN);
+ EVP_DigestUpdate(evpctx, *legacy_uuid, sizeof(uuid_t));
EVP_DigestFinal_ex(evpctx, hash_value, &hash_len);
EVP_MD_CTX_destroy(evpctx);
- assert(hash_len > sizeof(temp_id));
- memcpy(&temp_id, hash_value, sizeof(temp_id));
+ fatal_assert(hash_len > sizeof(uuid_t));
+ memcpy(ret_uuid, hash_value, sizeof(uuid_t));
+}
- handle->descr = NULL;
- handle->prev_descr = NULL;
- handle->unaligned_page = 0;
+void rrdeng_metric_init(RRDDIM *rd, uuid_t *dim_uuid)
+{
+ struct page_cache *pg_cache;
+ struct rrdengine_instance *ctx;
+ uuid_t legacy_uuid;
+ uuid_t multihost_legacy_uuid;
+ Pvoid_t *PValue;
+ struct pg_cache_page_index *page_index = NULL;
+ int is_multihost_child = 0;
+ RRDHOST *host = rd->rrdset->rrdhost;
+
+ ctx = get_rrdeng_ctx_from_host(rd->rrdset->rrdhost);
+ if (unlikely(!ctx)) {
+ error("Failed to fetch multidb context");
+ return;
+ }
+ pg_cache = &ctx->pg_cache;
+
+ rrdeng_generate_legacy_uuid(rd->id, rd->rrdset->id, &legacy_uuid);
+ rd->state->metric_uuid = dim_uuid;
+ if (host != localhost && host->rrdeng_ctx == &multidb_ctx)
+ is_multihost_child = 1;
uv_rwlock_rdlock(&pg_cache->metrics_index.lock);
- PValue = JudyHSGet(pg_cache->metrics_index.JudyHS_array, &temp_id, sizeof(uuid_t));
+ PValue = JudyHSGet(pg_cache->metrics_index.JudyHS_array, &legacy_uuid, sizeof(uuid_t));
if (likely(NULL != PValue)) {
page_index = *PValue;
}
uv_rwlock_rdunlock(&pg_cache->metrics_index.lock);
- if (NULL == PValue) {
- /* First time we see the UUID */
- uv_rwlock_wrlock(&pg_cache->metrics_index.lock);
- PValue = JudyHSIns(&pg_cache->metrics_index.JudyHS_array, &temp_id, sizeof(uuid_t), PJE0);
- assert(NULL == *PValue); /* TODO: figure out concurrency model */
- *PValue = page_index = create_page_index(&temp_id);
- page_index->prev = pg_cache->metrics_index.last_page_index;
- pg_cache->metrics_index.last_page_index = page_index;
- uv_rwlock_wrunlock(&pg_cache->metrics_index.lock);
+ if (is_multihost_child || NULL == PValue) {
+ /* First time we see the legacy UUID or metric belongs to child host in multi-host DB.
+ * Drop legacy support, normal path */
+
+ if (unlikely(!rd->state->metric_uuid))
+ rd->state->metric_uuid = create_dimension_uuid(rd->rrdset, rd);
+
+ uv_rwlock_rdlock(&pg_cache->metrics_index.lock);
+ PValue = JudyHSGet(pg_cache->metrics_index.JudyHS_array, rd->state->metric_uuid, sizeof(uuid_t));
+ if (likely(NULL != PValue)) {
+ page_index = *PValue;
+ }
+ uv_rwlock_rdunlock(&pg_cache->metrics_index.lock);
+ if (NULL == PValue) {
+ uv_rwlock_wrlock(&pg_cache->metrics_index.lock);
+ PValue = JudyHSIns(&pg_cache->metrics_index.JudyHS_array, rd->state->metric_uuid, sizeof(uuid_t), PJE0);
+ fatal_assert(NULL == *PValue); /* TODO: figure out concurrency model */
+ *PValue = page_index = create_page_index(rd->state->metric_uuid);
+ page_index->prev = pg_cache->metrics_index.last_page_index;
+ pg_cache->metrics_index.last_page_index = page_index;
+ uv_rwlock_wrunlock(&pg_cache->metrics_index.lock);
+ }
+ } else {
+ /* There are legacy UUIDs in the database, implement backward compatibility */
+
+ rrdeng_convert_legacy_uuid_to_multihost(rd->rrdset->rrdhost->machine_guid, &legacy_uuid,
+ &multihost_legacy_uuid);
+
+ if (unlikely(!rd->state->metric_uuid))
+ rd->state->metric_uuid = mallocz(sizeof(uuid_t));
+
+ int need_to_store = (dim_uuid == NULL || uuid_compare(*rd->state->metric_uuid, multihost_legacy_uuid));
+
+ uuid_copy(*rd->state->metric_uuid, multihost_legacy_uuid);
+
+ if (unlikely(need_to_store))
+ (void)sql_store_dimension(rd->state->metric_uuid, rd->rrdset->chart_uuid, rd->id, rd->name, rd->multiplier, rd->divisor,
+ rd->algorithm);
+
}
rd->state->rrdeng_uuid = &page_index->id;
- handle->page_index = page_index;
+ rd->state->page_index = page_index;
+}
+
+/*
+ * Gets a handle for storing metrics to the database.
+ * The handle must be released with rrdeng_store_metric_final().
+ */
+void rrdeng_store_metric_init(RRDDIM *rd)
+{
+ struct rrdeng_collect_handle *handle;
+ struct rrdengine_instance *ctx;
+ struct pg_cache_page_index *page_index;
+
+ ctx = get_rrdeng_ctx_from_host(rd->rrdset->rrdhost);
+ handle = &rd->state->handle.rrdeng;
+ handle->ctx = ctx;
+
+ handle->descr = NULL;
+ handle->prev_descr = NULL;
+ handle->unaligned_page = 0;
+
+ page_index = rd->state->page_index;
+ uv_rwlock_wrlock(&page_index->lock);
+ ++page_index->writers;
+ uv_rwlock_wrunlock(&page_index->lock);
}
/* The page must be populated and referenced */
@@ -88,12 +171,14 @@ void rrdeng_store_metric_flush_current_page(RRDDIM *rd)
handle = &rd->state->handle.rrdeng;
ctx = handle->ctx;
+ if (unlikely(!ctx))
+ return;
descr = handle->descr;
if (unlikely(NULL == descr)) {
return;
}
if (likely(descr->page_length)) {
- int ret, page_is_empty;
+ int page_is_empty;
rrd_stat_atomic_add(&ctx->stats.metric_API_producers, -1);
@@ -107,17 +192,21 @@ void rrdeng_store_metric_flush_current_page(RRDDIM *rd)
if (unlikely(debug_flags & D_RRDENGINE))
print_page_cache_descr(descr);
pg_cache_put(ctx, descr);
- pg_cache_punch_hole(ctx, descr, 1);
+ pg_cache_punch_hole(ctx, descr, 1, 0, NULL);
handle->prev_descr = NULL;
} else {
+ /*
+ * Disable pinning for now as it leads to deadlocks. When a collector stops collecting the extra pinned page
+ * eventually gets rotated but it cannot be destroyed due to the extra reference.
+ */
/* added 1 extra reference to keep 2 dirty pages pinned per metric, expected refcnt = 2 */
- rrdeng_page_descr_mutex_lock(ctx, descr);
+/* rrdeng_page_descr_mutex_lock(ctx, descr);
ret = pg_cache_try_get_unsafe(descr, 0);
rrdeng_page_descr_mutex_unlock(ctx, descr);
- assert (1 == ret);
+ fatal_assert(1 == ret);*/
rrdeng_commit_page(ctx, descr, handle->page_correlation_id);
- handle->prev_descr = descr;
+ /* handle->prev_descr = descr;*/
}
} else {
freez(descr->pg_cache_descr->page);
@@ -168,14 +257,12 @@ void rrdeng_store_metric_next(RRDDIM *rd, usec_t point_in_time, storage_number n
must_flush_unaligned_page)) {
rrdeng_store_metric_flush_current_page(rd);
- page = rrdeng_create_page(ctx, &handle->page_index->id, &descr);
- assert(page);
+ page = rrdeng_create_page(ctx, &rd->state->page_index->id, &descr);
+ fatal_assert(page);
handle->descr = descr;
- uv_rwlock_wrlock(&pg_cache->committed_page_index.lock);
- handle->page_correlation_id = pg_cache->committed_page_index.latest_corr_id++;
- uv_rwlock_wrunlock(&pg_cache->committed_page_index.lock);
+ handle->page_correlation_id = rrd_atomic_fetch_add(&pg_cache->committed_page_index.latest_corr_id, 1);
if (0 == rd->rrdset->rrddim_page_alignment) {
/* this is the leading dimension that defines chart alignment */
@@ -189,30 +276,53 @@ void rrdeng_store_metric_next(RRDDIM *rd, usec_t point_in_time, storage_number n
if (perfect_page_alignment)
rd->rrdset->rrddim_page_alignment = descr->page_length;
if (unlikely(INVALID_TIME == descr->start_time)) {
+ unsigned long new_metric_API_producers, old_metric_API_max_producers, ret_metric_API_max_producers;
descr->start_time = point_in_time;
- rrd_stat_atomic_add(&ctx->stats.metric_API_producers, 1);
- pg_cache_insert(ctx, handle->page_index, descr);
+ new_metric_API_producers = rrd_atomic_add_fetch(&ctx->stats.metric_API_producers, 1);
+ while (unlikely(new_metric_API_producers > (old_metric_API_max_producers = ctx->metric_API_max_producers))) {
+ /* Increase ctx->metric_API_max_producers */
+ ret_metric_API_max_producers = ulong_compare_and_swap(&ctx->metric_API_max_producers,
+ old_metric_API_max_producers,
+ new_metric_API_producers);
+ if (old_metric_API_max_producers == ret_metric_API_max_producers) {
+ /* success */
+ break;
+ }
+ }
+
+ pg_cache_insert(ctx, rd->state->page_index, descr);
} else {
- pg_cache_add_new_metric_time(handle->page_index, descr);
+ pg_cache_add_new_metric_time(rd->state->page_index, descr);
}
}
/*
* Releases the database reference from the handle for storing metrics.
+ * Returns 1 if it's safe to delete the dimension.
*/
-void rrdeng_store_metric_finalize(RRDDIM *rd)
+int rrdeng_store_metric_finalize(RRDDIM *rd)
{
struct rrdeng_collect_handle *handle;
struct rrdengine_instance *ctx;
+ struct pg_cache_page_index *page_index;
+ uint8_t can_delete_metric = 0;
handle = &rd->state->handle.rrdeng;
ctx = handle->ctx;
+ page_index = rd->state->page_index;
rrdeng_store_metric_flush_current_page(rd);
if (handle->prev_descr) {
/* unpin old second page */
pg_cache_put(ctx, handle->prev_descr);
}
+ uv_rwlock_wrlock(&page_index->lock);
+ if (!--page_index->writers && !page_index->page_count) {
+ can_delete_metric = 1;
+ }
+ uv_rwlock_wrunlock(&page_index->lock);
+
+ return can_delete_metric;
}
/* Returns 1 if the data collection interval is well defined, 0 otherwise */
@@ -253,7 +363,7 @@ static inline uint32_t *pginfo_to_points(struct rrdeng_page_info *page_info)
* @return number of regions with different data collection intervals.
*/
unsigned rrdeng_variable_step_boundaries(RRDSET *st, time_t start_time, time_t end_time,
- struct rrdeng_region_info **region_info_arrayp, unsigned *max_intervalp)
+ struct rrdeng_region_info **region_info_arrayp, unsigned *max_intervalp, struct context_param *context_param_list)
{
struct pg_cache_page_index *page_index;
struct rrdengine_instance *ctx;
@@ -266,15 +376,16 @@ unsigned rrdeng_variable_step_boundaries(RRDSET *st, time_t start_time, time_t e
struct rrdeng_region_info *region_info_array;
uint8_t is_first_region_initialized;
- ctx = st->rrdhost->rrdeng_ctx;
+ ctx = get_rrdeng_ctx_from_host(st->rrdhost);
regions = 1;
*max_intervalp = max_interval = 0;
region_info_array = NULL;
*region_info_arrayp = NULL;
page_info_array = NULL;
+ RRDDIM *temp_rd = context_param_list ? context_param_list->rd : NULL;
rrdset_rdlock(st);
- for(rd_iter = st->dimensions, rd = NULL, min_time = (usec_t)-1 ; rd_iter ; rd_iter = rd_iter->next) {
+ for(rd_iter = temp_rd?temp_rd:st->dimensions, rd = NULL, min_time = (usec_t)-1 ; rd_iter ; rd_iter = rd_iter->next) {
/*
* Choose oldest dimension as reference. This is not equivalent to the union of all dimensions
* but it is a best effort approximation with a bias towards older metrics in a chart. It
@@ -316,7 +427,7 @@ unsigned rrdeng_variable_step_boundaries(RRDSET *st, time_t start_time, time_t e
continue;
}
page_entries = curr->page_length / sizeof(storage_number);
- assert(0 != page_entries);
+ fatal_assert(0 != page_entries);
if (likely(1 != page_entries)) {
dt = (curr->end_time - curr->start_time) / (page_entries - 1);
*pginfo_to_dt(curr) = ROUND_USEC_TO_SEC(dt);
@@ -352,7 +463,7 @@ unsigned rrdeng_variable_step_boundaries(RRDSET *st, time_t start_time, time_t e
if (1 == page_points)
first_valid_time_in_page = current_position_time;
if (unlikely(!is_first_region_initialized)) {
- assert(1 == regions);
+ fatal_assert(1 == regions);
/* this is the first region */
region_info_array[0].start_time = current_position_time;
is_first_region_initialized = 1;
@@ -365,7 +476,7 @@ unsigned rrdeng_variable_step_boundaries(RRDSET *st, time_t start_time, time_t e
}
if (unlikely(0 == *pginfo_to_dt(curr))) { /* unknown data collection interval */
- assert(1 == page_points);
+ fatal_assert(1 == page_points);
if (likely(NULL != prev)) { /* get interval from previous page */
*pginfo_to_dt(curr) = *pginfo_to_dt(prev);
@@ -428,7 +539,7 @@ void rrdeng_load_metric_init(RRDDIM *rd, struct rrddim_query_handle *rrdimm_hand
struct rrdengine_instance *ctx;
unsigned pages_nr;
- ctx = rd->rrdset->rrdhost->rrdeng_ctx;
+ ctx = get_rrdeng_ctx_from_host(rd->rrdset->rrdhost);
rrdimm_handle->start_time = start_time;
rrdimm_handle->end_time = end_time;
handle = &rrdimm_handle->rrdeng;
@@ -452,7 +563,7 @@ storage_number rrdeng_load_metric_next(struct rrddim_query_handle *rrdimm_handle
struct rrdeng_page_descr *descr;
storage_number *page, ret;
unsigned position, entries;
- usec_t next_page_time, current_position_time, page_end_time;
+ usec_t next_page_time = 0, current_position_time, page_end_time = 0;
uint32_t page_length;
handle = &rrdimm_handle->rrdeng;
@@ -473,17 +584,18 @@ storage_number rrdeng_load_metric_next(struct rrddim_query_handle *rrdimm_handle
/* We need to get a new page */
if (descr) {
/* Drop old page's reference */
- handle->next_page_time = (page_end_time / USEC_PER_SEC) + 1;
- if (unlikely(handle->next_page_time > rrdimm_handle->end_time)) {
- goto no_more_metrics;
- }
- next_page_time = handle->next_page_time * USEC_PER_SEC;
#ifdef NETDATA_INTERNAL_CHECKS
rrd_stat_atomic_add(&ctx->stats.metric_API_consumers, -1);
#endif
pg_cache_put(ctx, descr);
handle->descr = NULL;
+ handle->next_page_time = (page_end_time / USEC_PER_SEC) + 1;
+ if (unlikely(handle->next_page_time > rrdimm_handle->end_time)) {
+ goto no_more_metrics;
+ }
+ next_page_time = handle->next_page_time * USEC_PER_SEC;
}
+
descr = pg_cache_lookup_next(ctx, handle->page_index, &handle->page_index->id,
next_page_time, rrdimm_handle->end_time * USEC_PER_SEC);
if (NULL == descr) {
@@ -520,7 +632,7 @@ storage_number rrdeng_load_metric_next(struct rrddim_query_handle *rrdimm_handle
}
handle->position = position;
handle->now = current_position_time / USEC_PER_SEC;
-/* assert(handle->now >= rrdimm_handle->start_time && handle->now <= rrdimm_handle->end_time);
+/* fatal_assert(handle->now >= rrdimm_handle->start_time && handle->now <= rrdimm_handle->end_time);
The above assertion is an approximation and needs to take update_every into account */
if (unlikely(handle->now >= rrdimm_handle->end_time)) {
/* next calls will not load any more metrics */
@@ -564,21 +676,17 @@ void rrdeng_load_metric_finalize(struct rrddim_query_handle *rrdimm_handle)
time_t rrdeng_metric_latest_time(RRDDIM *rd)
{
- struct rrdeng_collect_handle *handle;
struct pg_cache_page_index *page_index;
- handle = &rd->state->handle.rrdeng;
- page_index = handle->page_index;
+ page_index = rd->state->page_index;
return page_index->latest_time / USEC_PER_SEC;
}
time_t rrdeng_metric_oldest_time(RRDDIM *rd)
{
- struct rrdeng_collect_handle *handle;
struct pg_cache_page_index *page_index;
- handle = &rd->state->handle.rrdeng;
- page_index = handle->page_index;
+ page_index = rd->state->page_index;
return page_index->oldest_time / USEC_PER_SEC;
}
@@ -620,7 +728,7 @@ void rrdeng_commit_page(struct rrdengine_instance *ctx, struct rrdeng_page_descr
debug(D_RRDENGINE, "%s: page descriptor is NULL, page has already been force-committed.", __func__);
return;
}
- assert(descr->page_length);
+ fatal_assert(descr->page_length);
uv_rwlock_wrlock(&pg_cache->committed_page_index.lock);
PValue = JudyLIns(&pg_cache->committed_page_index.JudyL_array, page_correlation_id, PJE0);
@@ -628,16 +736,27 @@ void rrdeng_commit_page(struct rrdengine_instance *ctx, struct rrdeng_page_descr
nr_committed_pages = ++pg_cache->committed_page_index.nr_committed_pages;
uv_rwlock_wrunlock(&pg_cache->committed_page_index.lock);
- if (nr_committed_pages >= (pg_cache_hard_limit(ctx) - (unsigned long)ctx->stats.metric_API_producers) / 2) {
- /* 50% of pages have not been committed yet */
- if (0 == (unsigned long)ctx->stats.flushing_errors) {
- /* only print the first time */
- error("Failed to flush quickly enough in dbengine instance \"%s\""
- ". Metric data will not be stored in the database"
- ", please reduce disk load or use a faster disk.", ctx->dbfiles_path);
+ if (nr_committed_pages >= pg_cache_hard_limit(ctx) / 2) {
+ /* over 50% of pages have not been committed yet */
+
+ if (ctx->drop_metrics_under_page_cache_pressure &&
+ nr_committed_pages >= pg_cache_committed_hard_limit(ctx)) {
+ /* 100% of pages are dirty */
+ struct rrdeng_cmd cmd;
+
+ cmd.opcode = RRDENG_INVALIDATE_OLDEST_MEMORY_PAGE;
+ rrdeng_enq_cmd(&ctx->worker_config, &cmd);
+ } else {
+ if (0 == (unsigned long) ctx->stats.pg_cache_over_half_dirty_events) {
+ /* only print the first time */
+ errno = 0;
+ error("Failed to flush dirty buffers quickly enough in dbengine instance \"%s\". "
+ "Metric data at risk of not being stored in the database, "
+ "please reduce disk load or use a faster disk.", ctx->dbfiles_path);
+ }
+ rrd_stat_atomic_add(&ctx->stats.pg_cache_over_half_dirty_events, 1);
+ rrd_stat_atomic_add(&global_pg_cache_over_half_dirty_events, 1);
}
- rrd_stat_atomic_add(&ctx->stats.flushing_errors, 1);
- rrd_stat_atomic_add(&global_flushing_errors, 1);
}
pg_cache_put(ctx, descr);
@@ -687,8 +806,11 @@ void *rrdeng_get_page(struct rrdengine_instance *ctx, uuid_t *id, usec_t point_i
* You must not change the indices of the statistics or user code will break.
* You must not exceed RRDENG_NR_STATS or it will crash.
*/
-void rrdeng_get_35_statistics(struct rrdengine_instance *ctx, unsigned long long *array)
+void rrdeng_get_37_statistics(struct rrdengine_instance *ctx, unsigned long long *array)
{
+ if (ctx == NULL)
+ return;
+
struct page_cache *pg_cache = &ctx->pg_cache;
array[0] = (uint64_t)ctx->stats.metric_API_producers;
@@ -724,9 +846,11 @@ void rrdeng_get_35_statistics(struct rrdengine_instance *ctx, unsigned long long
array[30] = (uint64_t)global_io_errors;
array[31] = (uint64_t)global_fs_errors;
array[32] = (uint64_t)rrdeng_reserved_file_descriptors;
- array[33] = (uint64_t)ctx->stats.flushing_errors;
- array[34] = (uint64_t)global_flushing_errors;
- assert(RRDENG_NR_STATS == 35);
+ array[33] = (uint64_t)ctx->stats.pg_cache_over_half_dirty_events;
+ array[34] = (uint64_t)global_pg_cache_over_half_dirty_events;
+ array[35] = (uint64_t)ctx->stats.flushing_pressure_page_deletions;
+ array[36] = (uint64_t)global_flushing_pressure_page_deletions;
+ fatal_assert(RRDENG_NR_STATS == 37);
}
/* Releases reference to page */
@@ -739,21 +863,21 @@ void rrdeng_put_page(struct rrdengine_instance *ctx, void *handle)
/*
* Returns 0 on success, negative on error
*/
-int rrdeng_init(struct rrdengine_instance **ctxp, char *dbfiles_path, unsigned page_cache_mb, unsigned disk_space_mb)
+int rrdeng_init(RRDHOST *host, struct rrdengine_instance **ctxp, char *dbfiles_path, unsigned page_cache_mb,
+ unsigned disk_space_mb)
{
struct rrdengine_instance *ctx;
int error;
uint32_t max_open_files;
- sanity_check();
-
max_open_files = rlimit_nofile.rlim_cur / 4;
/* reserve RRDENG_FD_BUDGET_PER_INSTANCE file descriptors for this instance */
rrd_stat_atomic_add(&rrdeng_reserved_file_descriptors, RRDENG_FD_BUDGET_PER_INSTANCE);
if (rrdeng_reserved_file_descriptors > max_open_files) {
- error("Exceeded the budget of available file descriptors (%u/%u), cannot create new dbengine instance.",
- (unsigned)rrdeng_reserved_file_descriptors, (unsigned)max_open_files);
+ error(
+ "Exceeded the budget of available file descriptors (%u/%u), cannot create new dbengine instance.",
+ (unsigned)rrdeng_reserved_file_descriptors, (unsigned)max_open_files);
rrd_stat_atomic_add(&global_fs_errors, 1);
rrd_stat_atomic_add(&rrdeng_reserved_file_descriptors, -RRDENG_FD_BUDGET_PER_INSTANCE);
@@ -761,8 +885,7 @@ int rrdeng_init(struct rrdengine_instance **ctxp, char *dbfiles_path, unsigned p
}
if (NULL == ctxp) {
- /* for testing */
- ctx = &default_global_ctx;
+ ctx = &multidb_ctx;
memset(ctx, 0, sizeof(*ctx));
} else {
*ctxp = ctx = callocz(1, sizeof(*ctx));
@@ -778,6 +901,16 @@ int rrdeng_init(struct rrdengine_instance **ctxp, char *dbfiles_path, unsigned p
ctx->max_disk_space = disk_space_mb * 1048576LLU;
strncpyz(ctx->dbfiles_path, dbfiles_path, sizeof(ctx->dbfiles_path) - 1);
ctx->dbfiles_path[sizeof(ctx->dbfiles_path) - 1] = '\0';
+ if (NULL == host)
+ strncpyz(ctx->machine_guid, registry_get_this_machine_guid(), GUID_LEN);
+ else
+ strncpyz(ctx->machine_guid, host->machine_guid, GUID_LEN);
+
+ ctx->drop_metrics_under_page_cache_pressure = rrdeng_drop_metrics_under_page_cache_pressure;
+ ctx->metric_API_max_producers = 0;
+ ctx->quiesce = NO_QUIESCE;
+ ctx->metalog_ctx = NULL; /* only set this after the metadata log has finished initializing */
+ ctx->host = host;
memset(&ctx->worker_config, 0, sizeof(ctx->worker_config));
ctx->worker_config.ctx = ctx;
@@ -789,20 +922,27 @@ int rrdeng_init(struct rrdengine_instance **ctxp, char *dbfiles_path, unsigned p
}
init_completion(&ctx->rrdengine_completion);
- assert(0 == uv_thread_create(&ctx->worker_config.thread, rrdeng_worker, &ctx->worker_config));
+ fatal_assert(0 == uv_thread_create(&ctx->worker_config.thread, rrdeng_worker, &ctx->worker_config));
/* wait for worker thread to initialize */
wait_for_completion(&ctx->rrdengine_completion);
destroy_completion(&ctx->rrdengine_completion);
+ uv_thread_set_name_np(ctx->worker_config.thread, "DBENGINE");
if (ctx->worker_config.error) {
goto error_after_rrdeng_worker;
}
+ error = metalog_init(ctx);
+ if (error) {
+ error("Failed to initialize metadata log file event loop.");
+ goto error_after_rrdeng_worker;
+ }
+
return 0;
error_after_rrdeng_worker:
finalize_rrd_files(ctx);
error_after_init_rrd_files:
free_page_cache(ctx);
- if (ctx != &default_global_ctx) {
+ if (ctx != &multidb_ctx) {
freez(ctx);
*ctxp = NULL;
}
@@ -825,14 +965,35 @@ int rrdeng_exit(struct rrdengine_instance *ctx)
cmd.opcode = RRDENG_SHUTDOWN;
rrdeng_enq_cmd(&ctx->worker_config, &cmd);
- assert(0 == uv_thread_join(&ctx->worker_config.thread));
+ fatal_assert(0 == uv_thread_join(&ctx->worker_config.thread));
finalize_rrd_files(ctx);
+ //metalog_exit(ctx->metalog_ctx);
free_page_cache(ctx);
- if (ctx != &default_global_ctx) {
+ if (ctx != &multidb_ctx) {
freez(ctx);
}
rrd_stat_atomic_add(&rrdeng_reserved_file_descriptors, -RRDENG_FD_BUDGET_PER_INSTANCE);
return 0;
-} \ No newline at end of file
+}
+
+void rrdeng_prepare_exit(struct rrdengine_instance *ctx)
+{
+ struct rrdeng_cmd cmd;
+
+ if (NULL == ctx) {
+ return;
+ }
+
+ init_completion(&ctx->rrdengine_completion);
+ cmd.opcode = RRDENG_QUIESCE;
+ rrdeng_enq_cmd(&ctx->worker_config, &cmd);
+
+ /* wait for dbengine to quiesce */
+ wait_for_completion(&ctx->rrdengine_completion);
+ destroy_completion(&ctx->rrdengine_completion);
+
+ //metalog_prepare_exit(ctx->metalog_ctx);
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-27 18:13:09 +0000