diff options
Diffstat (limited to 'backends/backends.c')
| -rw-r--r-- | backends/backends.c | 1247 |
1 files changed, 0 insertions, 1247 deletions
diff --git a/backends/backends.c b/backends/backends.c deleted file mode 100644 index dca21ef1c..000000000 --- a/backends/backends.c +++ /dev/null @@ -1,1247 +0,0 @@ -// SPDX-License-Identifier: GPL-3.0-or-later - -#define BACKENDS_INTERNALS -#include "backends.h" - -// ---------------------------------------------------------------------------- -// How backends work in netdata: -// -// 1. There is an independent thread that runs at the required interval -// (for example, once every 10 seconds) -// -// 2. Every time it wakes, it calls the backend formatting functions to build -// a buffer of data. This is a very fast, memory only operation. -// -// 3. If the buffer already includes data, the new data are appended. -// If the buffer becomes too big, because the data cannot be sent, a -// log is written and the buffer is discarded. -// -// 4. Then it tries to send all the data. It blocks until all the data are sent -// or the socket returns an error. -// If the time required for this is above the interval, it starts skipping -// intervals, but the calculated values include the entire database, without -// gaps (it remembers the timestamps and continues from where it stopped). -// -// 5. repeats the above forever. -// - -const char *global_backend_prefix = "netdata"; -const char *global_backend_send_charts_matching = "*"; -int global_backend_update_every = 10; -BACKEND_OPTIONS global_backend_options = BACKEND_SOURCE_DATA_AVERAGE | BACKEND_OPTION_SEND_NAMES; -const char *global_backend_source = NULL; - -// ---------------------------------------------------------------------------- -// helper functions for backends - -size_t backend_name_copy(char *d, const char *s, size_t usable) { - size_t n; - - for(n = 0; *s && n < usable ; d++, s++, n++) { - char c = *s; - - if(c != '.' && !isalnum(c)) *d = '_'; - else *d = c; - } - *d = '\0'; - - return n; -} - -// calculate the SUM or AVERAGE of a dimension, for any timeframe -// may return NAN if the database does not have any value in the give timeframe - -calculated_number backend_calculate_value_from_stored_data( - RRDSET *st // the chart - , RRDDIM *rd // the dimension - , time_t after // the start timestamp - , time_t before // the end timestamp - , BACKEND_OPTIONS backend_options // BACKEND_SOURCE_* bitmap - , time_t *first_timestamp // the first point of the database used in this response - , time_t *last_timestamp // the timestamp that should be reported to backend -) { - RRDHOST *host = st->rrdhost; - (void)host; - - // find the edges of the rrd database for this chart - time_t first_t = rd->state->query_ops.oldest_time(rd); - time_t last_t = rd->state->query_ops.latest_time(rd); - time_t update_every = st->update_every; - struct rrddim_query_handle handle; - storage_number n; - - // step back a little, to make sure we have complete data collection - // for all metrics - after -= update_every * 2; - before -= update_every * 2; - - // align the time-frame - after = after - (after % update_every); - before = before - (before % update_every); - - // for before, loose another iteration - // the latest point will be reported the next time - before -= update_every; - - if(unlikely(after > before)) - // this can happen when update_every > before - after - after = before; - - if(unlikely(after < first_t)) - after = first_t; - - if(unlikely(before > last_t)) - before = last_t; - - if(unlikely(before < first_t || after > last_t)) { - // the chart has not been updated in the wanted timeframe - debug(D_BACKEND, "BACKEND: %s.%s.%s: aligned timeframe %lu to %lu is outside the chart's database range %lu to %lu", - host->hostname, st->id, rd->id, - (unsigned long)after, (unsigned long)before, - (unsigned long)first_t, (unsigned long)last_t - ); - return NAN; - } - - *first_timestamp = after; - *last_timestamp = before; - - size_t counter = 0; - calculated_number sum = 0; - -/* - long start_at_slot = rrdset_time2slot(st, before), - stop_at_slot = rrdset_time2slot(st, after), - slot, stop_now = 0; - - for(slot = start_at_slot; !stop_now ; slot--) { - - if(unlikely(slot < 0)) slot = st->entries - 1; - if(unlikely(slot == stop_at_slot)) stop_now = 1; - - storage_number n = rd->values[slot]; - - if(unlikely(!does_storage_number_exist(n))) { - // not collected - continue; - } - - calculated_number value = unpack_storage_number(n); - sum += value; - - counter++; - } -*/ - for(rd->state->query_ops.init(rd, &handle, after, before) ; !rd->state->query_ops.is_finished(&handle) ; ) { - time_t curr_t; - n = rd->state->query_ops.next_metric(&handle, &curr_t); - - if(unlikely(!does_storage_number_exist(n))) { - // not collected - continue; - } - - calculated_number value = unpack_storage_number(n); - sum += value; - - counter++; - } - rd->state->query_ops.finalize(&handle); - if(unlikely(!counter)) { - debug(D_BACKEND, "BACKEND: %s.%s.%s: no values stored in database for range %lu to %lu", - host->hostname, st->id, rd->id, - (unsigned long)after, (unsigned long)before - ); - return NAN; - } - - if(unlikely(BACKEND_OPTIONS_DATA_SOURCE(backend_options) == BACKEND_SOURCE_DATA_SUM)) - return sum; - - return sum / (calculated_number)counter; -} - - -// discard a response received by a backend -// after logging a simple of it to error.log - -int discard_response(BUFFER *b, const char *backend) { - char sample[1024]; - const char *s = buffer_tostring(b); - char *d = sample, *e = &sample[sizeof(sample) - 1]; - - for(; *s && d < e ;s++) { - char c = *s; - if(unlikely(!isprint(c))) c = ' '; - *d++ = c; - } - *d = '\0'; - - info("BACKEND: received %zu bytes from %s backend. Ignoring them. Sample: '%s'", buffer_strlen(b), backend, sample); - buffer_flush(b); - return 0; -} - - -// ---------------------------------------------------------------------------- -// the backend thread - -static SIMPLE_PATTERN *charts_pattern = NULL; -static SIMPLE_PATTERN *hosts_pattern = NULL; - -inline int backends_can_send_rrdset(BACKEND_OPTIONS backend_options, RRDSET *st) { - RRDHOST *host = st->rrdhost; - (void)host; - - if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_BACKEND_IGNORE))) - return 0; - - if(unlikely(!rrdset_flag_check(st, RRDSET_FLAG_BACKEND_SEND))) { - // we have not checked this chart - if(simple_pattern_matches(charts_pattern, st->id) || simple_pattern_matches(charts_pattern, st->name)) - rrdset_flag_set(st, RRDSET_FLAG_BACKEND_SEND); - else { - rrdset_flag_set(st, RRDSET_FLAG_BACKEND_IGNORE); - debug(D_BACKEND, "BACKEND: not sending chart '%s' of host '%s', because it is disabled for backends.", st->id, host->hostname); - return 0; - } - } - - if(unlikely(!rrdset_is_available_for_exporting_and_alarms(st))) { - debug(D_BACKEND, "BACKEND: not sending chart '%s' of host '%s', because it is not available for backends.", st->id, host->hostname); - return 0; - } - - if(unlikely(st->rrd_memory_mode == RRD_MEMORY_MODE_NONE && !(BACKEND_OPTIONS_DATA_SOURCE(backend_options) == BACKEND_SOURCE_DATA_AS_COLLECTED))) { - debug(D_BACKEND, "BACKEND: not sending chart '%s' of host '%s' because its memory mode is '%s' and the backend requires database access.", st->id, host->hostname, rrd_memory_mode_name(host->rrd_memory_mode)); - return 0; - } - - return 1; -} - -inline BACKEND_OPTIONS backend_parse_data_source(const char *source, BACKEND_OPTIONS backend_options) { - if(!strcmp(source, "raw") || !strcmp(source, "as collected") || !strcmp(source, "as-collected") || !strcmp(source, "as_collected") || !strcmp(source, "ascollected")) { - backend_options |= BACKEND_SOURCE_DATA_AS_COLLECTED; - backend_options &= ~(BACKEND_OPTIONS_SOURCE_BITS ^ BACKEND_SOURCE_DATA_AS_COLLECTED); - } - else if(!strcmp(source, "average")) { - backend_options |= BACKEND_SOURCE_DATA_AVERAGE; - backend_options &= ~(BACKEND_OPTIONS_SOURCE_BITS ^ BACKEND_SOURCE_DATA_AVERAGE); - } - else if(!strcmp(source, "sum") || !strcmp(source, "volume")) { - backend_options |= BACKEND_SOURCE_DATA_SUM; - backend_options &= ~(BACKEND_OPTIONS_SOURCE_BITS ^ BACKEND_SOURCE_DATA_SUM); - } - else { - error("BACKEND: invalid data source method '%s'.", source); - } - - return backend_options; -} - -static void backends_main_cleanup(void *ptr) { - struct netdata_static_thread *static_thread = (struct netdata_static_thread *)ptr; - static_thread->enabled = NETDATA_MAIN_THREAD_EXITING; - - info("cleaning up..."); - - static_thread->enabled = NETDATA_MAIN_THREAD_EXITED; -} - -/** - * Set Kinesis variables - * - * Set the variables necessary to work with this specific backend. - * - * @param default_port the default port of the backend - * @param brc function called to check the result. - * @param brf function called to format the message to the backend - */ -void backend_set_kinesis_variables(int *default_port, - backend_response_checker_t brc, - backend_request_formatter_t brf) -{ - (void)default_port; -#ifndef HAVE_KINESIS - (void)brc; - (void)brf; -#endif - -#if HAVE_KINESIS - *brc = process_json_response; - if (BACKEND_OPTIONS_DATA_SOURCE(global_backend_options) == BACKEND_SOURCE_DATA_AS_COLLECTED) - *brf = backends_format_dimension_collected_json_plaintext; - else - *brf = backends_format_dimension_stored_json_plaintext; -#endif -} - -/** - * Set Prometheus variables - * - * Set the variables necessary to work with this specific backend. - * - * @param default_port the default port of the backend - * @param brc function called to check the result. - * @param brf function called to format the message to the backend - */ -void backend_set_prometheus_variables(int *default_port, - backend_response_checker_t brc, - backend_request_formatter_t brf) -{ - (void)default_port; - (void)brf; -#ifndef ENABLE_PROMETHEUS_REMOTE_WRITE - (void)brc; -#endif - -#if ENABLE_PROMETHEUS_REMOTE_WRITE - *brc = backends_process_prometheus_remote_write_response; -#endif /* ENABLE_PROMETHEUS_REMOTE_WRITE */ -} - -/** - * Set MongoDB variables - * - * Set the variables necessary to work with this specific backend. - * - * @param default_port the default port of the backend - * @param brc function called to check the result. - * @param brf function called to format the message to the backend - */ -void backend_set_mongodb_variables(int *default_port, - backend_response_checker_t brc, - backend_request_formatter_t brf) -{ - (void)default_port; -#ifndef HAVE_MONGOC - (void)brc; - (void)brf; -#endif - -#if HAVE_MONGOC - *brc = process_json_response; - if(BACKEND_OPTIONS_DATA_SOURCE(global_backend_options) == BACKEND_SOURCE_DATA_AS_COLLECTED) - *brf = backends_format_dimension_collected_json_plaintext; - else - *brf = backends_format_dimension_stored_json_plaintext; -#endif -} - -/** - * Set JSON variables - * - * Set the variables necessary to work with this specific backend. - * - * @param default_port the default port of the backend - * @param brc function called to check the result. - * @param brf function called to format the message to the backend - */ -void backend_set_json_variables(int *default_port, - backend_response_checker_t brc, - backend_request_formatter_t brf) -{ - *default_port = 5448; - *brc = process_json_response; - - if (BACKEND_OPTIONS_DATA_SOURCE(global_backend_options) == BACKEND_SOURCE_DATA_AS_COLLECTED) - *brf = backends_format_dimension_collected_json_plaintext; - else - *brf = backends_format_dimension_stored_json_plaintext; -} - -/** - * Set OpenTSDB HTTP variables - * - * Set the variables necessary to work with this specific backend. - * - * @param default_port the default port of the backend - * @param brc function called to check the result. - * @param brf function called to format the message to the backend - */ -void backend_set_opentsdb_http_variables(int *default_port, - backend_response_checker_t brc, - backend_request_formatter_t brf) -{ - *default_port = 4242; - *brc = process_opentsdb_response; - - if(BACKEND_OPTIONS_DATA_SOURCE(global_backend_options) == BACKEND_SOURCE_DATA_AS_COLLECTED) - *brf = backends_format_dimension_collected_opentsdb_http; - else - *brf = backends_format_dimension_stored_opentsdb_http; - -} - -/** - * Set OpenTSDB Telnet variables - * - * Set the variables necessary to work with this specific backend. - * - * @param default_port the default port of the backend - * @param brc function called to check the result. - * @param brf function called to format the message to the backend - */ -void backend_set_opentsdb_telnet_variables(int *default_port, - backend_response_checker_t brc, - backend_request_formatter_t brf) -{ - *default_port = 4242; - *brc = process_opentsdb_response; - - if(BACKEND_OPTIONS_DATA_SOURCE(global_backend_options) == BACKEND_SOURCE_DATA_AS_COLLECTED) - *brf = backends_format_dimension_collected_opentsdb_telnet; - else - *brf = backends_format_dimension_stored_opentsdb_telnet; -} - -/** - * Set Graphite variables - * - * Set the variables necessary to work with this specific backend. - * - * @param default_port the default port of the backend - * @param brc function called to check the result. - * @param brf function called to format the message to the backend - */ -void backend_set_graphite_variables(int *default_port, - backend_response_checker_t brc, - backend_request_formatter_t brf) -{ - *default_port = 2003; - *brc = process_graphite_response; - - if(BACKEND_OPTIONS_DATA_SOURCE(global_backend_options) == BACKEND_SOURCE_DATA_AS_COLLECTED) - *brf = backends_format_dimension_collected_graphite_plaintext; - else - *brf = backends_format_dimension_stored_graphite_plaintext; -} - -/** - * Select Type - * - * Select the backend type based in the user input - * - * @param type is the string that defines the backend type - * - * @return It returns the backend id. - */ -BACKEND_TYPE backend_select_type(const char *type) { - if(!strcmp(type, "graphite") || !strcmp(type, "graphite:plaintext")) { - return BACKEND_TYPE_GRAPHITE; - } - else if(!strcmp(type, "opentsdb") || !strcmp(type, "opentsdb:telnet")) { - return BACKEND_TYPE_OPENTSDB_USING_TELNET; - } - else if(!strcmp(type, "opentsdb:http") || !strcmp(type, "opentsdb:https")) { - return BACKEND_TYPE_OPENTSDB_USING_HTTP; - } - else if (!strcmp(type, "json") || !strcmp(type, "json:plaintext")) { - return BACKEND_TYPE_JSON; - } - else if (!strcmp(type, "prometheus_remote_write")) { - return BACKEND_TYPE_PROMETHEUS_REMOTE_WRITE; - } - else if (!strcmp(type, "kinesis") || !strcmp(type, "kinesis:plaintext")) { - return BACKEND_TYPE_KINESIS; - } - else if (!strcmp(type, "mongodb") || !strcmp(type, "mongodb:plaintext")) { - return BACKEND_TYPE_MONGODB; - } - - return BACKEND_TYPE_UNKNOWN; -} - -/** - * Backend main - * - * The main thread used to control the backends. - * - * @param ptr a pointer to netdata_static_structure. - * - * @return It always return NULL. - */ -void *backends_main(void *ptr) { - netdata_thread_cleanup_push(backends_main_cleanup, ptr); - - int default_port = 0; - int sock = -1; - BUFFER *b = buffer_create(1), *response = buffer_create(1); - int (*backend_request_formatter)(BUFFER *, const char *, RRDHOST *, const char *, RRDSET *, RRDDIM *, time_t, time_t, BACKEND_OPTIONS) = NULL; - int (*backend_response_checker)(BUFFER *) = NULL; - -#if HAVE_KINESIS - int do_kinesis = 0; - char *kinesis_auth_key_id = NULL, *kinesis_secure_key = NULL, *kinesis_stream_name = NULL; -#endif - -#if ENABLE_PROMETHEUS_REMOTE_WRITE - int do_prometheus_remote_write = 0; - BUFFER *http_request_header = NULL; -#endif - -#if HAVE_MONGOC - int do_mongodb = 0; - char *mongodb_uri = NULL; - char *mongodb_database = NULL; - char *mongodb_collection = NULL; - - // set the default socket timeout in ms - int32_t mongodb_default_socket_timeout = (int32_t)(global_backend_update_every >= 2)?(global_backend_update_every * MSEC_PER_SEC - 500):1000; - -#endif - -#ifdef ENABLE_HTTPS - struct netdata_ssl opentsdb_ssl = {NULL , NETDATA_SSL_START}; -#endif - - // ------------------------------------------------------------------------ - // collect configuration options - - struct timeval timeout = { - .tv_sec = 0, - .tv_usec = 0 - }; - int enabled = config_get_boolean(CONFIG_SECTION_BACKEND, "enabled", 0); - const char *source = config_get(CONFIG_SECTION_BACKEND, "data source", "average"); - const char *type = config_get(CONFIG_SECTION_BACKEND, "type", "graphite"); - const char *destination = config_get(CONFIG_SECTION_BACKEND, "destination", "localhost"); - global_backend_prefix = config_get(CONFIG_SECTION_BACKEND, "prefix", "netdata"); - const char *hostname = config_get(CONFIG_SECTION_BACKEND, "hostname", localhost->hostname); - global_backend_update_every = (int)config_get_number(CONFIG_SECTION_BACKEND, "update every", global_backend_update_every); - int buffer_on_failures = (int)config_get_number(CONFIG_SECTION_BACKEND, "buffer on failures", 10); - long timeoutms = config_get_number(CONFIG_SECTION_BACKEND, "timeout ms", global_backend_update_every * 2 * 1000); - - if(config_get_boolean(CONFIG_SECTION_BACKEND, "send names instead of ids", (global_backend_options & BACKEND_OPTION_SEND_NAMES))) - global_backend_options |= BACKEND_OPTION_SEND_NAMES; - else - global_backend_options &= ~BACKEND_OPTION_SEND_NAMES; - - charts_pattern = simple_pattern_create( - global_backend_send_charts_matching = config_get(CONFIG_SECTION_BACKEND, "send charts matching", "*"), - NULL, - SIMPLE_PATTERN_EXACT); - hosts_pattern = simple_pattern_create(config_get(CONFIG_SECTION_BACKEND, "send hosts matching", "localhost *"), NULL, SIMPLE_PATTERN_EXACT); - -#if ENABLE_PROMETHEUS_REMOTE_WRITE - const char *remote_write_path = config_get(CONFIG_SECTION_BACKEND, "remote write URL path", "/receive"); -#endif - - // ------------------------------------------------------------------------ - // validate configuration options - // and prepare for sending data to our backend - - global_backend_options = backend_parse_data_source(source, global_backend_options); - global_backend_source = source; - - if(timeoutms < 1) { - error("BACKEND: invalid timeout %ld ms given. Assuming %d ms.", timeoutms, global_backend_update_every * 2 * 1000); - timeoutms = global_backend_update_every * 2 * 1000; - } - timeout.tv_sec = (timeoutms * 1000) / 1000000; - timeout.tv_usec = (timeoutms * 1000) % 1000000; - - if(!enabled || global_backend_update_every < 1) - goto cleanup; - - // ------------------------------------------------------------------------ - // select the backend type - BACKEND_TYPE work_type = backend_select_type(type); - if (work_type == BACKEND_TYPE_UNKNOWN) { - error("BACKEND: Unknown backend type '%s'", type); - goto cleanup; - } - - switch (work_type) { - case BACKEND_TYPE_OPENTSDB_USING_HTTP: { -#ifdef ENABLE_HTTPS - if (!strcmp(type, "opentsdb:https")) { - security_start_ssl(NETDATA_SSL_CONTEXT_EXPORTING); - } -#endif - backend_set_opentsdb_http_variables(&default_port,&backend_response_checker,&backend_request_formatter); - break; - } - case BACKEND_TYPE_PROMETHEUS_REMOTE_WRITE: { -#if ENABLE_PROMETHEUS_REMOTE_WRITE - do_prometheus_remote_write = 1; - - http_request_header = buffer_create(1); - backends_init_write_request(); -#else - error("BACKEND: Prometheus remote write support isn't compiled"); -#endif // ENABLE_PROMETHEUS_REMOTE_WRITE - backend_set_prometheus_variables(&default_port,&backend_response_checker,&backend_request_formatter); - break; - } - case BACKEND_TYPE_KINESIS: { -#if HAVE_KINESIS - do_kinesis = 1; - - if(unlikely(read_kinesis_conf(netdata_configured_user_config_dir, &kinesis_auth_key_id, &kinesis_secure_key, &kinesis_stream_name))) { - error("BACKEND: kinesis backend type is set but cannot read its configuration from %s/aws_kinesis.conf", netdata_configured_user_config_dir); - goto cleanup; - } - - backends_kinesis_init(destination, kinesis_auth_key_id, kinesis_secure_key, timeout.tv_sec * 1000 + timeout.tv_usec / 1000); -#else - error("BACKEND: AWS Kinesis support isn't compiled"); -#endif // HAVE_KINESIS - backend_set_kinesis_variables(&default_port,&backend_response_checker,&backend_request_formatter); - break; - } - case BACKEND_TYPE_MONGODB: { -#if HAVE_MONGOC - if(unlikely(read_mongodb_conf(netdata_configured_user_config_dir, - &mongodb_uri, - &mongodb_database, - &mongodb_collection))) { - error("BACKEND: mongodb backend type is set but cannot read its configuration from %s/mongodb.conf", - netdata_configured_user_config_dir); - goto cleanup; - } - - if(likely(!backends_mongodb_init(mongodb_uri, mongodb_database, mongodb_collection, mongodb_default_socket_timeout))) { - backend_set_mongodb_variables(&default_port, &backend_response_checker, &backend_request_formatter); - do_mongodb = 1; - } - else { - error("BACKEND: cannot initialize MongoDB backend"); - goto cleanup; - } -#else - error("BACKEND: MongoDB support isn't compiled"); -#endif // HAVE_MONGOC - break; - } - case BACKEND_TYPE_GRAPHITE: { - backend_set_graphite_variables(&default_port,&backend_response_checker,&backend_request_formatter); - break; - } - case BACKEND_TYPE_OPENTSDB_USING_TELNET: { - backend_set_opentsdb_telnet_variables(&default_port,&backend_response_checker,&backend_request_formatter); - break; - } - case BACKEND_TYPE_JSON: { - backend_set_json_variables(&default_port,&backend_response_checker,&backend_request_formatter); - break; - } - case BACKEND_TYPE_UNKNOWN: { - break; - } - default: { - break; - } - } - -#if ENABLE_PROMETHEUS_REMOTE_WRITE - if((backend_request_formatter == NULL && !do_prometheus_remote_write) || backend_response_checker == NULL) { -#else - if(backend_request_formatter == NULL || backend_response_checker == NULL) { -#endif - error("BACKEND: backend is misconfigured - disabling it."); - goto cleanup; - } - - -// ------------------------------------------------------------------------ -// prepare the charts for monitoring the backend operation - - struct rusage thread; - - collected_number - chart_buffered_metrics = 0, - chart_lost_metrics = 0, - chart_sent_metrics = 0, - chart_buffered_bytes = 0, - chart_received_bytes = 0, - chart_sent_bytes = 0, - chart_receptions = 0, - chart_transmission_successes = 0, - chart_transmission_failures = 0, - chart_data_lost_events = 0, - chart_lost_bytes = 0, - chart_backend_reconnects = 0; - // chart_backend_latency = 0; - - RRDSET *chart_metrics = rrdset_create_localhost("netdata", "backend_metrics", NULL, "backend", NULL, "Netdata Buffered Metrics", "metrics", "backends", NULL, 130600, global_backend_update_every, RRDSET_TYPE_LINE); - rrddim_add(chart_metrics, "buffered", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE); - rrddim_add(chart_metrics, "lost", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE); - rrddim_add(chart_metrics, "sent", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE); - - RRDSET *chart_bytes = rrdset_create_localhost("netdata", "backend_bytes", NULL, "backend", NULL, "Netdata Backend Data Size", "KiB", "backends", NULL, 130610, global_backend_update_every, RRDSET_TYPE_AREA); - rrddim_add(chart_bytes, "buffered", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE); - rrddim_add(chart_bytes, "lost", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE); - rrddim_add(chart_bytes, "sent", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE); - rrddim_add(chart_bytes, "received", NULL, 1, 1024, RRD_ALGORITHM_ABSOLUTE); - - RRDSET *chart_ops = rrdset_create_localhost("netdata", "backend_ops", NULL, "backend", NULL, "Netdata Backend Operations", "operations", "backends", NULL, 130630, global_backend_update_every, RRDSET_TYPE_LINE); - rrddim_add(chart_ops, "write", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE); - rrddim_add(chart_ops, "discard", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE); - rrddim_add(chart_ops, "reconnect", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE); - rrddim_add(chart_ops, "failure", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE); - rrddim_add(chart_ops, "read", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE); - - /* - * this is misleading - we can only measure the time we need to send data - * this time is not related to the time required for the data to travel to - * the backend database and the time that server needed to process them - * - * issue #1432 and https://www.softlab.ntua.gr/facilities/documentation/unix/unix-socket-faq/unix-socket-faq-2.html - * - RRDSET *chart_latency = rrdset_create_localhost("netdata", "backend_latency", NULL, "backend", NULL, "Netdata Backend Latency", "ms", "backends", NULL, 130620, global_backend_update_every, RRDSET_TYPE_AREA); - rrddim_add(chart_latency, "latency", NULL, 1, 1000, RRD_ALGORITHM_ABSOLUTE); - */ - - RRDSET *chart_rusage = rrdset_create_localhost("netdata", "backend_thread_cpu", NULL, "backend", NULL, "Netdata Backend Thread CPU usage", "milliseconds/s", "backends", NULL, 130630, global_backend_update_every, RRDSET_TYPE_STACKED); - rrddim_add(chart_rusage, "user", NULL, 1, 1000, RRD_ALGORITHM_INCREMENTAL); - rrddim_add(chart_rusage, "system", NULL, 1, 1000, RRD_ALGORITHM_INCREMENTAL); - - - // ------------------------------------------------------------------------ - // prepare the backend main loop - - info("BACKEND: configured ('%s' on '%s' sending '%s' data, every %d seconds, as host '%s', with prefix '%s')", type, destination, source, global_backend_update_every, hostname, global_backend_prefix); - send_statistics("BACKEND_START", "OK", type); - - usec_t step_ut = global_backend_update_every * USEC_PER_SEC; - time_t after = now_realtime_sec(); - int failures = 0; - heartbeat_t hb; - heartbeat_init(&hb); - - while(!netdata_exit) { - - // ------------------------------------------------------------------------ - // Wait for the next iteration point. - - heartbeat_next(&hb, step_ut); - time_t before = now_realtime_sec(); - debug(D_BACKEND, "BACKEND: preparing buffer for timeframe %lu to %lu", (unsigned long)after, (unsigned long)before); - - // ------------------------------------------------------------------------ - // add to the buffer the data we need to send to the backend - - netdata_thread_disable_cancelability(); - - size_t count_hosts = 0; - size_t count_charts_total = 0; - size_t count_dims_total = 0; - -#if ENABLE_PROMETHEUS_REMOTE_WRITE - if(do_prometheus_remote_write) - backends_clear_write_request(); -#endif - rrd_rdlock(); - RRDHOST *host; - rrdhost_foreach_read(host) { - if(unlikely(!rrdhost_flag_check(host, RRDHOST_FLAG_BACKEND_SEND|RRDHOST_FLAG_BACKEND_DONT_SEND))) { - char *name = (host == localhost)?"localhost":host->hostname; - if (!hosts_pattern || simple_pattern_matches(hosts_pattern, name)) { - rrdhost_flag_set(host, RRDHOST_FLAG_BACKEND_SEND); - info("enabled backend for host '%s'", name); - } - else { - rrdhost_flag_set(host, RRDHOST_FLAG_BACKEND_DONT_SEND); - info("disabled backend for host '%s'", name); - } - } - - if(unlikely(!rrdhost_flag_check(host, RRDHOST_FLAG_BACKEND_SEND))) - continue; - - rrdhost_rdlock(host); - - count_hosts++; - size_t count_charts = 0; - size_t count_dims = 0; - size_t count_dims_skipped = 0; - - const char *__hostname = (host == localhost)?hostname:host->hostname; - -#if ENABLE_PROMETHEUS_REMOTE_WRITE - if(do_prometheus_remote_write) { - backends_rrd_stats_remote_write_allmetrics_prometheus( - host - , __hostname - , global_backend_prefix - , global_backend_options - , after - , before - , &count_charts - , &count_dims - , &count_dims_skipped - ); - chart_buffered_metrics += count_dims; - } - else -#endif - { - RRDSET *st; - rrdset_foreach_read(st, host) { - if(likely(backends_can_send_rrdset(global_backend_options, st))) { - rrdset_rdlock(st); - - count_charts++; - - RRDDIM *rd; - rrddim_foreach_read(rd, st) { - if (likely(rd->last_collected_time.tv_sec >= after)) { - chart_buffered_metrics += backend_request_formatter(b, global_backend_prefix, host, __hostname, st, rd, after, before, global_backend_options); - count_dims++; - } - else { - debug(D_BACKEND, "BACKEND: not sending dimension '%s' of chart '%s' from host '%s', its last data collection (%lu) is not within our timeframe (%lu to %lu)", rd->id, st->id, __hostname, (unsigned long)rd->last_collected_time.tv_sec, (unsigned long)after, (unsigned long)before); - count_dims_skipped++; - } - } - - rrdset_unlock(st); - } - } - } - - debug(D_BACKEND, "BACKEND: sending host '%s', metrics of %zu dimensions, of %zu charts. Skipped %zu dimensions.", __hostname, count_dims, count_charts, count_dims_skipped); - count_charts_total += count_charts; - count_dims_total += count_dims; - - rrdhost_unlock(host); - } - rrd_unlock(); - - netdata_thread_enable_cancelability(); - - debug(D_BACKEND, "BACKEND: buffer has %zu bytes, added metrics for %zu dimensions, of %zu charts, from %zu hosts", buffer_strlen(b), count_dims_total, count_charts_total, count_hosts); - - // ------------------------------------------------------------------------ - - chart_buffered_bytes = (collected_number)buffer_strlen(b); - - // reset the monitoring chart counters - chart_received_bytes = - chart_sent_bytes = - chart_sent_metrics = - chart_lost_metrics = - chart_receptions = - chart_transmission_successes = - chart_transmission_failures = - chart_data_lost_events = - chart_lost_bytes = - chart_backend_reconnects = 0; - // chart_backend_latency = 0; - - if(unlikely(netdata_exit)) break; - - //fprintf(stderr, "\nBACKEND BEGIN:\n%s\nBACKEND END\n", buffer_tostring(b)); - //fprintf(stderr, "after = %lu, before = %lu\n", after, before); - - // prepare for the next iteration - // to add incrementally data to buffer - after = before; - -#if HAVE_KINESIS - if(do_kinesis) { - unsigned long long partition_key_seq = 0; - - size_t buffer_len = buffer_strlen(b); - size_t sent = 0; - - while(sent < buffer_len) { - char partition_key[KINESIS_PARTITION_KEY_MAX + 1]; - snprintf(partition_key, KINESIS_PARTITION_KEY_MAX, "netdata_%llu", partition_key_seq++); - size_t partition_key_len = strnlen(partition_key, KINESIS_PARTITION_KEY_MAX); - - const char *first_char = buffer_tostring(b) + sent; - - size_t record_len = 0; - - // split buffer into chunks of maximum allowed size - if(buffer_len - sent < KINESIS_RECORD_MAX - partition_key_len) { - record_len = buffer_len - sent; - } - else { - record_len = KINESIS_RECORD_MAX - partition_key_len; - while(*(first_char + record_len) != '\n' && record_len) record_len--; - } - - char error_message[ERROR_LINE_MAX + 1] = ""; - - debug(D_BACKEND, "BACKEND: backends_kinesis_put_record(): dest = %s, id = %s, key = %s, stream = %s, partition_key = %s, \ - buffer = %zu, record = %zu", destination, kinesis_auth_key_id, kinesis_secure_key, kinesis_stream_name, - partition_key, buffer_len, record_len); - - backends_kinesis_put_record(kinesis_stream_name, partition_key, first_char, record_len); - - sent += record_len; - chart_transmission_successes++; - - size_t sent_bytes = 0, lost_bytes = 0; - - if(unlikely(backends_kinesis_get_result(error_message, &sent_bytes, &lost_bytes))) { - // oops! we couldn't send (all or some of the) data - error("BACKEND: %s", error_message); - error("BACKEND: failed to write data to database backend '%s'. Willing to write %zu bytes, wrote %zu bytes.", - destination, sent_bytes, sent_bytes - lost_bytes); - - chart_transmission_failures++; - chart_data_lost_events++; - chart_lost_bytes += lost_bytes; - - // estimate the number of lost metrics - chart_lost_metrics += (collected_number)(chart_buffered_metrics - * (buffer_len && (lost_bytes > buffer_len) ? (double)lost_bytes / buffer_len : 1)); - - break; - } - else { - chart_receptions++; - } - - if(unlikely(netdata_exit)) break; - } - - chart_sent_bytes += sent; - if(likely(sent == buffer_len)) - chart_sent_metrics = chart_buffered_metrics; - - buffer_flush(b); - } else -#endif /* HAVE_KINESIS */ - -#if HAVE_MONGOC - if(do_mongodb) { - size_t buffer_len = buffer_strlen(b); - size_t sent = 0; - - while(sent < buffer_len) { - const char *first_char = buffer_tostring(b); - - debug(D_BACKEND, "BACKEND: backends_mongodb_insert(): uri = %s, database = %s, collection = %s, \ - buffer = %zu", mongodb_uri, mongodb_database, mongodb_collection, buffer_len); - - if(likely(!backends_mongodb_insert((char *)first_char, (size_t)chart_buffered_metrics))) { - sent += buffer_len; - chart_transmission_successes++; - chart_receptions++; - } - else { - // oops! we couldn't send (all or some of the) data - error("BACKEND: failed to write data to database backend '%s'. Willing to write %zu bytes, wrote %zu bytes.", - mongodb_uri, buffer_len, 0UL); - - chart_transmission_failures++; - chart_data_lost_events++; - chart_lost_bytes += buffer_len; - - // estimate the number of lost metrics - chart_lost_metrics += (collected_number)chart_buffered_metrics; - - break; - } - - if(unlikely(netdata_exit)) break; - } - - chart_sent_bytes += sent; - if(likely(sent == buffer_len)) - chart_sent_metrics = chart_buffered_metrics; - - buffer_flush(b); - } else -#endif /* HAVE_MONGOC */ - - { - - // ------------------------------------------------------------------------ - // if we are connected, receive a response, without blocking - - if(likely(sock != -1)) { - errno = 0; - - // loop through to collect all data - while(sock != -1 && errno != EWOULDBLOCK) { - buffer_need_bytes(response, 4096); - - ssize_t r; -#ifdef ENABLE_HTTPS - if(opentsdb_ssl.conn && !opentsdb_ssl.flags) { - r = SSL_read(opentsdb_ssl.conn, &response->buffer[response->len], response->size - response->len); - } else { - r = recv(sock, &response->buffer[response->len], response->size - response->len, MSG_DONTWAIT); - } -#else - r = recv(sock, &response->buffer[response->len], response->size - response->len, MSG_DONTWAIT); -#endif - if(likely(r > 0)) { - // we received some data - response->len += r; - chart_received_bytes += r; - chart_receptions++; - } - else if(r == 0) { - error("BACKEND: '%s' closed the socket", destination); - close(sock); - sock = -1; - } - else { - // failed to receive data - if(errno != EAGAIN && errno != EWOULDBLOCK) { - error("BACKEND: cannot receive data from backend '%s'.", destination); - } - } - } - - // if we received data, process them - if(buffer_strlen(response)) - backend_response_checker(response); - } - - // ------------------------------------------------------------------------ - // if we are not connected, connect to a backend server - - if(unlikely(sock == -1)) { - // usec_t start_ut = now_monotonic_usec(); - size_t reconnects = 0; - - sock = connect_to_one_of(destination, default_port, &timeout, &reconnects, NULL, 0); -#ifdef ENABLE_HTTPS - if(sock != -1) { - if(netdata_exporting_ctx) { - if(!opentsdb_ssl.conn) { - opentsdb_ssl.conn = SSL_new(netdata_exporting_ctx); - if(!opentsdb_ssl.conn) { - error("Failed to allocate SSL structure %d.", sock); - opentsdb_ssl.flags = NETDATA_SSL_NO_HANDSHAKE; - } - } else { - SSL_clear(opentsdb_ssl.conn); - } - } - - if(opentsdb_ssl.conn) { - if(SSL_set_fd(opentsdb_ssl.conn, sock) != 1) { - error("Failed to set the socket to the SSL on socket fd %d.", host->rrdpush_sender_socket); - opentsdb_ssl.flags = NETDATA_SSL_NO_HANDSHAKE; - } else { - opentsdb_ssl.flags = NETDATA_SSL_HANDSHAKE_COMPLETE; - SSL_set_connect_state(opentsdb_ssl.conn); - int err = SSL_connect(opentsdb_ssl.conn); - if (err != 1) { - err = SSL_get_error(opentsdb_ssl.conn, err); - error("SSL cannot connect with the server: %s ", ERR_error_string((long)SSL_get_error(opentsdb_ssl.conn, err), NULL)); - opentsdb_ssl.flags = NETDATA_SSL_NO_HANDSHAKE; - } //TODO: check certificate here - } - } - } -#endif - chart_backend_reconnects += reconnects; - // chart_backend_latency += now_monotonic_usec() - start_ut; - } - - if(unlikely(netdata_exit)) break; - - // ------------------------------------------------------------------------ - // if we are connected, send our buffer to the backend server - - if(likely(sock != -1)) { - size_t len = buffer_strlen(b); - // usec_t start_ut = now_monotonic_usec(); - int flags = 0; - #ifdef MSG_NOSIGNAL - flags += MSG_NOSIGNAL; - #endif - -#if ENABLE_PROMETHEUS_REMOTE_WRITE - if(do_prometheus_remote_write) { - size_t data_size = backends_get_write_request_size(); - - if(unlikely(!data_size)) { - error("BACKEND: write request size is out of range"); - continue; - } - - buffer_flush(b); - buffer_need_bytes(b, data_size); - if(unlikely(backends_pack_write_request(b->buffer, &data_size))) { - error("BACKEND: cannot pack write request"); - continue; - } - b->len = data_size; - chart_buffered_bytes = (collected_number)buffer_strlen(b); - - buffer_flush(http_request_header); - buffer_sprintf(http_request_header, - "POST %s HTTP/1.1\r\n" - "Host: %s\r\n" - "Accept: */*\r\n" - "Content-Length: %zu\r\n" - "Content-Type: application/x-www-form-urlencoded\r\n\r\n", - remote_write_path, - destination, - data_size - ); - - len = buffer_strlen(http_request_header); - send(sock, buffer_tostring(http_request_header), len, flags); - - len = data_size; - } -#endif - - ssize_t written; -#ifdef ENABLE_HTTPS - if(opentsdb_ssl.conn && !opentsdb_ssl.flags) { - written = SSL_write(opentsdb_ssl.conn, buffer_tostring(b), len); - } else { - written = send(sock, buffer_tostring(b), len, flags); - } -#else - written = send(sock, buffer_tostring(b), len, flags); -#endif - - // chart_backend_latency += now_monotonic_usec() - start_ut; - if(written != -1 && (size_t)written == len) { - // we sent the data successfully - chart_transmission_successes++; - chart_sent_bytes += written; - chart_sent_metrics = chart_buffered_metrics; - - // reset the failures count - failures = 0; - - // empty the buffer - buffer_flush(b); - } - else { - // oops! we couldn't send (all or some of the) data - error("BACKEND: failed to write data to database backend '%s'. Willing to write %zu bytes, wrote %zd bytes. Will re-connect.", destination, len, written); - chart_transmission_failures++; - - if(written != -1) - chart_sent_bytes += written; - - // increment the counter we check for data loss - failures++; - - // close the socket - we will re-open it next time - close(sock); - sock = -1; - } - } - else { - error("BACKEND: failed to update database backend '%s'", destination); - chart_transmission_failures++; - - // increment the counter we check for data loss - failures++; - } - } - - -#if ENABLE_PROMETHEUS_REMOTE_WRITE - if(do_prometheus_remote_write && failures) { - (void) buffer_on_failures; - failures = 0; - chart_lost_bytes = chart_buffered_bytes = backends_get_write_request_size(); // estimated write request size - chart_data_lost_events++; - chart_lost_metrics = chart_buffered_metrics; - } else -#endif - if(failures > buffer_on_failures) { - // too bad! we are going to lose data - chart_lost_bytes += buffer_strlen(b); - error("BACKEND: reached %d backend failures. Flushing buffers to protect this host - this results in data loss on back-end server '%s'", failures, destination); - buffer_flush(b); - failures = 0; - chart_data_lost_events++; - chart_lost_metrics = chart_buffered_metrics; - } - - if(unlikely(netdata_exit)) break; - - // ------------------------------------------------------------------------ - // update the monitoring charts - - if(likely(chart_ops->counter_done)) rrdset_next(chart_ops); - rrddim_set(chart_ops, "read", chart_receptions); - rrddim_set(chart_ops, "write", chart_transmission_successes); - rrddim_set(chart_ops, "discard", chart_data_lost_events); - rrddim_set(chart_ops, "failure", chart_transmission_failures); - rrddim_set(chart_ops, "reconnect", chart_backend_reconnects); - rrdset_done(chart_ops); - - if(likely(chart_metrics->counter_done)) rrdset_next(chart_metrics); - rrddim_set(chart_metrics, "buffered", chart_buffered_metrics); - rrddim_set(chart_metrics, "lost", chart_lost_metrics); - rrddim_set(chart_metrics, "sent", chart_sent_metrics); - rrdset_done(chart_metrics); - - if(likely(chart_bytes->counter_done)) rrdset_next(chart_bytes); - rrddim_set(chart_bytes, "buffered", chart_buffered_bytes); - rrddim_set(chart_bytes, "lost", chart_lost_bytes); - rrddim_set(chart_bytes, "sent", chart_sent_bytes); - rrddim_set(chart_bytes, "received", chart_received_bytes); - rrdset_done(chart_bytes); - - /* - if(likely(chart_latency->counter_done)) rrdset_next(chart_latency); - rrddim_set(chart_latency, "latency", chart_backend_latency); - rrdset_done(chart_latency); - */ - - getrusage(RUSAGE_THREAD, &thread); - if(likely(chart_rusage->counter_done)) rrdset_next(chart_rusage); - rrddim_set(chart_rusage, "user", thread.ru_utime.tv_sec * 1000000ULL + thread.ru_utime.tv_usec); - rrddim_set(chart_rusage, "system", thread.ru_stime.tv_sec * 1000000ULL + thread.ru_stime.tv_usec); - rrdset_done(chart_rusage); - - if(likely(buffer_strlen(b) == 0)) - chart_buffered_metrics = 0; - - if(unlikely(netdata_exit)) break; - } - -cleanup: -#if HAVE_KINESIS - if(do_kinesis) { - backends_kinesis_shutdown(); - freez(kinesis_auth_key_id); - freez(kinesis_secure_key); - freez(kinesis_stream_name); - } -#endif - -#if ENABLE_PROMETHEUS_REMOTE_WRITE - buffer_free(http_request_header); - if(do_prometheus_remote_write) - backends_protocol_buffers_shutdown(); -#endif - -#if HAVE_MONGOC - if(do_mongodb) { - backends_mongodb_cleanup(); - freez(mongodb_uri); - freez(mongodb_database); - freez(mongodb_collection); - } -#endif - - if(sock != -1) - close(sock); - - buffer_free(b); - buffer_free(response); - -#ifdef ENABLE_HTTPS - if(netdata_exporting_ctx) { - if(opentsdb_ssl.conn) { - SSL_free(opentsdb_ssl.conn); - } - } -#endif - - netdata_thread_cleanup_pop(1); - return NULL; -} |