diff options
Diffstat (limited to 'src/statsd.c')
| -rw-r--r-- | src/statsd.c | 2041 |
1 files changed, 2041 insertions, 0 deletions
diff --git a/src/statsd.c b/src/statsd.c new file mode 100644 index 00000000..4dd04757 --- /dev/null +++ b/src/statsd.c @@ -0,0 +1,2041 @@ +#include "common.h" + +#define STATSD_CHART_PREFIX "statsd" +#define STATSD_CHART_PRIORITY 90000 + +// -------------------------------------------------------------------------------------- + +// #define STATSD_MULTITHREADED 1 + +#ifdef STATSD_MULTITHREADED +// DO NOT ENABLE MULTITHREADING - IT IS NOT WELL TESTED +#define STATSD_AVL_TREE avl_tree_lock +#define STATSD_AVL_INSERT avl_insert_lock +#define STATSD_AVL_SEARCH avl_search_lock +#define STATSD_AVL_INDEX_INIT { .avl_tree = { NULL, statsd_metric_compare }, .rwlock = AVL_LOCK_INITIALIZER } +#define STATSD_FIRST_PTR_MUTEX netdata_mutex_t first_mutex +#define STATSD_FIRST_PTR_MUTEX_INIT .first_mutex = NETDATA_MUTEX_INITIALIZER +#define STATSD_FIRST_PTR_MUTEX_LOCK(index) netdata_mutex_lock(&((index)->first_mutex)) +#define STATSD_FIRST_PTR_MUTEX_UNLOCK(index) netdata_mutex_unlock(&((index)->first_mutex)) +#define STATSD_DICTIONARY_OPTIONS DICTIONARY_FLAG_DEFAULT +#else +#define STATSD_AVL_TREE avl_tree +#define STATSD_AVL_INSERT avl_insert +#define STATSD_AVL_SEARCH avl_search +#define STATSD_AVL_INDEX_INIT { .root = NULL, .compar = statsd_metric_compare } +#define STATSD_FIRST_PTR_MUTEX +#define STATSD_FIRST_PTR_MUTEX_INIT +#define STATSD_FIRST_PTR_MUTEX_LOCK(index) +#define STATSD_FIRST_PTR_MUTEX_UNLOCK(index) +#define STATSD_DICTIONARY_OPTIONS DICTIONARY_FLAG_SINGLE_THREADED +#endif + +#define STATSD_DECIMAL_DETAIL 1000 // floating point values get multiplied by this, with the same divisor + +// -------------------------------------------------------------------------------------------------------------------- +// data specific to each metric type + +typedef struct statsd_metric_gauge { + long double value; +} STATSD_METRIC_GAUGE; + +typedef struct statsd_metric_counter { // counter and meter + long long value; +} STATSD_METRIC_COUNTER; + +typedef struct statsd_histogram_extensions { + netdata_mutex_t mutex; + + // average is stored in metric->last + collected_number last_min; + collected_number last_max; + collected_number last_percentile; + collected_number last_median; + collected_number last_stddev; + collected_number last_sum; + + RRDDIM *rd_min; + RRDDIM *rd_max; + RRDDIM *rd_percentile; + RRDDIM *rd_median; + RRDDIM *rd_stddev; + RRDDIM *rd_sum; + + size_t size; + size_t used; + long double *values; // dynamic array of values collected +} STATSD_METRIC_HISTOGRAM_EXTENSIONS; + +typedef struct statsd_metric_histogram { // histogram and timer + STATSD_METRIC_HISTOGRAM_EXTENSIONS *ext; +} STATSD_METRIC_HISTOGRAM; + +typedef struct statsd_metric_set { + DICTIONARY *dict; + size_t unique; +} STATSD_METRIC_SET; + + +// -------------------------------------------------------------------------------------------------------------------- +// this is a metric - for all types of metrics + +typedef enum statsd_metric_options { + STATSD_METRIC_OPTION_NONE = 0x00000000, // no options set + STATSD_METRIC_OPTION_SHOW_GAPS_WHEN_NOT_COLLECTED = 0x00000001, // do not update the chart dimension, when this metric is not collected + STATSD_METRIC_OPTION_PRIVATE_CHART_ENABLED = 0x00000002, // render a private chart for this metric + STATSD_METRIC_OPTION_PRIVATE_CHART_CHECKED = 0x00000004, // the metric has been checked if it should get private chart or not + STATSD_METRIC_OPTION_CHART_DIMENSION_COUNT = 0x00000008, // show the count of events for this private chart + STATSD_METRIC_OPTION_CHECKED_IN_APPS = 0x00000010, // set when this metric has been checked agains apps +} STATS_METRIC_OPTIONS; + +typedef enum statsd_metric_type { + STATSD_METRIC_TYPE_GAUGE, + STATSD_METRIC_TYPE_COUNTER, + STATSD_METRIC_TYPE_METER, + STATSD_METRIC_TYPE_TIMER, + STATSD_METRIC_TYPE_HISTOGRAM, + STATSD_METRIC_TYPE_SET +} STATSD_METRIC_TYPE; + + +typedef struct statsd_metric { + avl avl; // indexing + + const char *name; // the name of the metric + uint32_t hash; // hash of the name + + STATSD_METRIC_TYPE type; + + // metadata about data collection + collected_number events; // the number of times this metric has been collected (never resets) + size_t count; // the number of times this metric has been collected since the last flush + + // the actual collected data + union { + STATSD_METRIC_GAUGE gauge; + STATSD_METRIC_COUNTER counter; + STATSD_METRIC_HISTOGRAM histogram; + STATSD_METRIC_SET set; + }; + + // chart related members + STATS_METRIC_OPTIONS options; // STATSD_METRIC_OPTION_* (bitfield) + char reset; // set to 1 to reset this metric to zero + collected_number last; // the last value sent to netdata + RRDSET *st; // the chart of this metric + RRDDIM *rd_value; // the dimension of this metric value + RRDDIM *rd_count; // the dimension for the number of events received + + // linking, used for walking through all metrics + struct statsd_metric *next; +} STATSD_METRIC; + + +// -------------------------------------------------------------------------------------------------------------------- +// each type of metric has its own index + +typedef struct statsd_index { + char *name; // the name of the index of metrics + size_t events; // the number of events processed for this index + size_t metrics; // the number of metrics in this index + + STATSD_AVL_TREE index; // the AVL tree + + STATSD_METRIC *first; // the linked list of metrics (new metrics are added in front) + STATSD_FIRST_PTR_MUTEX; // when mutli-threading is enabled, a lock to protect the linked list + + STATS_METRIC_OPTIONS default_options; // default options for all metrics in this index +} STATSD_INDEX; + +static int statsd_metric_compare(void* a, void* b); + +// -------------------------------------------------------------------------------------------------------------------- +// synthetic charts + +typedef enum statsd_app_chart_dimension_value_type { + STATSD_APP_CHART_DIM_VALUE_TYPE_EVENTS, + STATSD_APP_CHART_DIM_VALUE_TYPE_LAST, + STATSD_APP_CHART_DIM_VALUE_TYPE_AVERAGE, + STATSD_APP_CHART_DIM_VALUE_TYPE_SUM, + STATSD_APP_CHART_DIM_VALUE_TYPE_MIN, + STATSD_APP_CHART_DIM_VALUE_TYPE_MAX, + STATSD_APP_CHART_DIM_VALUE_TYPE_PERCENTILE, + STATSD_APP_CHART_DIM_VALUE_TYPE_MEDIAN, + STATSD_APP_CHART_DIM_VALUE_TYPE_STDDEV +} STATSD_APP_CHART_DIM_VALUE_TYPE; + +typedef struct statsd_app_chart_dimension { + const char *name; + const char *metric; + uint32_t metric_hash; + collected_number multiplier; + collected_number divisor; + STATSD_APP_CHART_DIM_VALUE_TYPE value_type; + + RRDDIM *rd; + collected_number *value_ptr; + RRD_ALGORITHM algorithm; + + struct statsd_app_chart_dimension *next; +} STATSD_APP_CHART_DIM; + +typedef struct statsd_app_chart { + const char *source; + const char *id; + const char *name; + const char *title; + const char *family; + const char *context; + const char *units; + long priority; + RRDSET_TYPE chart_type; + STATSD_APP_CHART_DIM *dimensions; + size_t dimensions_count; + size_t dimensions_linked_count; + + RRDSET *st; + struct statsd_app_chart *next; +} STATSD_APP_CHART; + +typedef struct statsd_app { + const char *name; + SIMPLE_PATTERN *metrics; + STATS_METRIC_OPTIONS default_options; + RRD_MEMORY_MODE rrd_memory_mode; + long rrd_history_entries; + + const char *source; + STATSD_APP_CHART *charts; + struct statsd_app *next; +} STATSD_APP; + +// -------------------------------------------------------------------------------------------------------------------- +// global statsd data + +static struct statsd { + STATSD_INDEX gauges; + STATSD_INDEX counters; + STATSD_INDEX timers; + STATSD_INDEX histograms; + STATSD_INDEX meters; + STATSD_INDEX sets; + size_t unknown_types; + size_t socket_errors; + size_t tcp_socket_reads; + size_t tcp_packets_received; + size_t tcp_bytes_read; + size_t udp_socket_reads; + size_t udp_packets_received; + size_t udp_bytes_read; + + int enabled; + int update_every; + SIMPLE_PATTERN *charts_for; + + size_t private_charts; + size_t max_private_charts; + size_t max_private_charts_hard; + RRD_MEMORY_MODE private_charts_memory_mode; + long private_charts_rrd_history_entries; + + STATSD_APP *apps; + size_t recvmmsg_size; + size_t histogram_increase_step; + double histogram_percentile; + char *histogram_percentile_str; + int threads; + LISTEN_SOCKETS sockets; +} statsd = { + .enabled = 1, + .max_private_charts = 200, + .max_private_charts_hard = 1000, + .recvmmsg_size = 10, + + .gauges = { + .name = "gauge", + .events = 0, + .metrics = 0, + .index = STATSD_AVL_INDEX_INIT, + .default_options = STATSD_METRIC_OPTION_NONE, + .first = NULL, + STATSD_FIRST_PTR_MUTEX_INIT + }, + .counters = { + .name = "counter", + .events = 0, + .metrics = 0, + .index = STATSD_AVL_INDEX_INIT, + .default_options = STATSD_METRIC_OPTION_NONE, + .first = NULL, + STATSD_FIRST_PTR_MUTEX_INIT + }, + .timers = { + .name = "timer", + .events = 0, + .metrics = 0, + .index = STATSD_AVL_INDEX_INIT, + .default_options = STATSD_METRIC_OPTION_NONE, + .first = NULL, + STATSD_FIRST_PTR_MUTEX_INIT + }, + .histograms = { + .name = "histogram", + .events = 0, + .metrics = 0, + .index = STATSD_AVL_INDEX_INIT, + .default_options = STATSD_METRIC_OPTION_NONE, + .first = NULL, + STATSD_FIRST_PTR_MUTEX_INIT + }, + .meters = { + .name = "meter", + .events = 0, + .metrics = 0, + .index = STATSD_AVL_INDEX_INIT, + .default_options = STATSD_METRIC_OPTION_NONE, + .first = NULL, + STATSD_FIRST_PTR_MUTEX_INIT + }, + .sets = { + .name = "set", + .events = 0, + .metrics = 0, + .index = STATSD_AVL_INDEX_INIT, + .default_options = STATSD_METRIC_OPTION_NONE, + .first = NULL, + STATSD_FIRST_PTR_MUTEX_INIT + }, + + .apps = NULL, + .histogram_percentile = 95.0, + .histogram_increase_step = 10, + .threads = 0, + .sockets = { + .config_section = CONFIG_SECTION_STATSD, + .default_bind_to = "udp:localhost tcp:localhost", + .default_port = STATSD_LISTEN_PORT, + .backlog = STATSD_LISTEN_BACKLOG + }, +}; + + +// -------------------------------------------------------------------------------------------------------------------- +// statsd index management - add/find metrics + +static int statsd_metric_compare(void* a, void* b) { + if(((STATSD_METRIC *)a)->hash < ((STATSD_METRIC *)b)->hash) return -1; + else if(((STATSD_METRIC *)a)->hash > ((STATSD_METRIC *)b)->hash) return 1; + else return strcmp(((STATSD_METRIC *)a)->name, ((STATSD_METRIC *)b)->name); +} + +static inline STATSD_METRIC *stasd_metric_index_find(STATSD_INDEX *index, const char *name, uint32_t hash) { + STATSD_METRIC tmp; + tmp.name = name; + tmp.hash = (hash)?hash:simple_hash(tmp.name); + + return (STATSD_METRIC *)STATSD_AVL_SEARCH(&index->index, (avl *)&tmp); +} + +static inline STATSD_METRIC *statsd_find_or_add_metric(STATSD_INDEX *index, const char *name, STATSD_METRIC_TYPE type) { + debug(D_STATSD, "searching for metric '%s' under '%s'", name, index->name); + + uint32_t hash = simple_hash(name); + + STATSD_METRIC *m = stasd_metric_index_find(index, name, hash); + if(unlikely(!m)) { + debug(D_STATSD, "Creating new %s metric '%s'", index->name, name); + + m = (STATSD_METRIC *)callocz(sizeof(STATSD_METRIC), 1); + m->name = strdupz(name); + m->hash = hash; + m->type = type; + m->options = index->default_options; + + if(type == STATSD_METRIC_TYPE_HISTOGRAM || type == STATSD_METRIC_TYPE_TIMER) { + m->histogram.ext = callocz(sizeof(STATSD_METRIC_HISTOGRAM_EXTENSIONS), 1); + netdata_mutex_init(&m->histogram.ext->mutex); + } + STATSD_METRIC *n = (STATSD_METRIC *)STATSD_AVL_INSERT(&index->index, (avl *)m); + if(unlikely(n != m)) { + freez((void *)m->histogram.ext); + freez((void *)m->name); + freez((void *)m); + m = n; + } + else { + STATSD_FIRST_PTR_MUTEX_LOCK(index); + index->metrics++; + m->next = index->first; + index->first = m; + STATSD_FIRST_PTR_MUTEX_UNLOCK(index); + } + } + + index->events++; + return m; +} + + +// -------------------------------------------------------------------------------------------------------------------- +// statsd parsing numbers + +static inline long double statsd_parse_float(const char *v, long double def) { + long double value; + + if(likely(v && *v)) { + char *e = NULL; + value = str2ld(v, &e); + if(unlikely(e && *e)) + error("STATSD: excess data '%s' after value '%s'", e, v); + } + else + value = def; + + return value; +} + +static inline long long statsd_parse_int(const char *v, long long def) { + long long value; + + if(likely(v && *v)) { + char *e = NULL; + value = str2ll(v, &e); + if(unlikely(e && *e)) + error("STATSD: excess data '%s' after value '%s'", e, v); + } + else + value = def; + + return value; +} + + +// -------------------------------------------------------------------------------------------------------------------- +// statsd processors per metric type + +static inline void statsd_reset_metric(STATSD_METRIC *m) { + m->reset = 0; + m->count = 0; +} + +static inline void statsd_process_gauge(STATSD_METRIC *m, const char *value, const char *sampling) { + if(unlikely(!value || !*value)) { + error("STATSD: metric '%s' of type gauge, with empty value is ignored.", m->name); + return; + } + + if(unlikely(m->reset)) { + // no need to reset anything specific for gauges + statsd_reset_metric(m); + } + + if(unlikely(*value == '+' || *value == '-')) + m->gauge.value += statsd_parse_float(value, 1.0) / statsd_parse_float(sampling, 1.0); + else + m->gauge.value = statsd_parse_float(value, 1.0) / statsd_parse_float(sampling, 1.0); + + m->events++; + m->count++; +} + +static inline void statsd_process_counter(STATSD_METRIC *m, const char *value, const char *sampling) { + // we accept empty values for counters + + if(unlikely(m->reset)) statsd_reset_metric(m); + + m->counter.value += roundl((long double)statsd_parse_int(value, 1) / statsd_parse_float(sampling, 1.0)); + + m->events++; + m->count++; +} + +static inline void statsd_process_meter(STATSD_METRIC *m, const char *value, const char *sampling) { + // this is the same with the counter + statsd_process_counter(m, value, sampling); +} + +static inline void statsd_process_histogram(STATSD_METRIC *m, const char *value, const char *sampling) { + if(unlikely(!value || !*value)) { + error("STATSD: metric '%s' of type histogram, with empty value is ignored.", m->name); + return; + } + + if(unlikely(m->reset)) { + m->histogram.ext->used = 0; + statsd_reset_metric(m); + } + + if(unlikely(m->histogram.ext->used == m->histogram.ext->size)) { + netdata_mutex_lock(&m->histogram.ext->mutex); + m->histogram.ext->size += statsd.histogram_increase_step; + m->histogram.ext->values = reallocz(m->histogram.ext->values, sizeof(long double) * m->histogram.ext->size); + netdata_mutex_unlock(&m->histogram.ext->mutex); + } + + m->histogram.ext->values[m->histogram.ext->used++] = statsd_parse_float(value, 1.0) / statsd_parse_float(sampling, 1.0); + + m->events++; + m->count++; +} + +static inline void statsd_process_timer(STATSD_METRIC *m, const char *value, const char *sampling) { + if(unlikely(!value || !*value)) { + error("STATSD: metric of type set, with empty value is ignored."); + return; + } + + // timers are a use case of histogram + statsd_process_histogram(m, value, sampling); +} + +static inline void statsd_process_set(STATSD_METRIC *m, const char *value) { + if(unlikely(!value || !*value)) { + error("STATSD: metric of type set, with empty value is ignored."); + return; + } + + if(unlikely(m->reset)) { + if(likely(m->set.dict)) { + dictionary_destroy(m->set.dict); + m->set.dict = NULL; + } + statsd_reset_metric(m); + } + + if(unlikely(!m->set.dict)) { + m->set.dict = dictionary_create(STATSD_DICTIONARY_OPTIONS|DICTIONARY_FLAG_VALUE_LINK_DONT_CLONE); + m->set.unique = 0; + } + + void *t = dictionary_get(m->set.dict, value); + if(unlikely(!t)) { + dictionary_set(m->set.dict, value, NULL, 1); + m->set.unique++; + } + + m->events++; + m->count++; +} + + +// -------------------------------------------------------------------------------------------------------------------- +// statsd parsing + +static void statsd_process_metric(const char *name, const char *value, const char *type, const char *sampling) { + debug(D_STATSD, "STATSD: raw metric '%s', value '%s', type '%s', rate '%s'", name?name:"(null)", value?value:"(null)", type?type:"(null)", sampling?sampling:"(null)"); + + if(unlikely(!name || !*name)) return; + if(unlikely(!type || !*type)) type = "m"; + + char t0 = type[0], t1 = type[1]; + + if(unlikely(t0 == 'g' && t1 == '\0')) { + statsd_process_gauge( + statsd_find_or_add_metric(&statsd.gauges, name, STATSD_METRIC_TYPE_GAUGE), + value, sampling); + } + else if(unlikely((t0 == 'c' || t0 == 'C') && t1 == '\0')) { + // etsy/statsd uses 'c' + // brubeck uses 'C' + statsd_process_counter( + statsd_find_or_add_metric(&statsd.counters, name, STATSD_METRIC_TYPE_COUNTER), + value, sampling); + } + else if(unlikely(t0 == 'm' && t1 == '\0')) { + statsd_process_meter( + statsd_find_or_add_metric(&statsd.meters, name, STATSD_METRIC_TYPE_METER), + value, sampling); + } + else if(unlikely(t0 == 'h' && t1 == '\0')) { + statsd_process_histogram( + statsd_find_or_add_metric(&statsd.histograms, name, STATSD_METRIC_TYPE_HISTOGRAM), + value, sampling); + } + else if(unlikely(t0 == 's' && t1 == '\0')) { + statsd_process_set( + statsd_find_or_add_metric(&statsd.sets, name, STATSD_METRIC_TYPE_SET), + value); + } + else if(unlikely(t0 == 'm' && t1 == 's' && type[2] == '\0')) { + statsd_process_timer( + statsd_find_or_add_metric(&statsd.timers, name, STATSD_METRIC_TYPE_TIMER), + value, sampling); + } + else { + statsd.unknown_types++; + error("STATSD: metric '%s' with value '%s' is sent with unknown metric type '%s'", name, value?value:"", type); + } +} + +static inline const char *statsd_parse_skip_up_to(const char *s, char d1, char d2) { + char c; + + for(c = *s; c && c != d1 && c != d2 && c != '\r' && c != '\n'; c = *++s) ; + + return s; +} + +const char *statsd_parse_skip_spaces(const char *s) { + char c; + + for(c = *s; c && ( c == ' ' || c == '\t' || c == '\r' || c == '\n' ); c = *++s) ; + + return s; +} + +static inline const char *statsd_parse_field_trim(const char *start, char *end) { + if(unlikely(!start)) { + start = end; + return start; + } + + while(start <= end && (*start == ' ' || *start == '\t')) + start++; + + *end = '\0'; + end--; + while(end >= start && (*end == ' ' || *end == '\t')) + *end-- = '\0'; + + return start; +} + +static inline size_t statsd_process(char *buffer, size_t size, int require_newlines) { + buffer[size] = '\0'; + debug(D_STATSD, "RECEIVED: %zu bytes: '%s'", size, buffer); + + const char *s = buffer; + while(*s) { + const char *name = NULL, *value = NULL, *type = NULL, *sampling = NULL; + char *name_end = NULL, *value_end = NULL, *type_end = NULL, *sampling_end = NULL; + + s = name_end = (char *)statsd_parse_skip_up_to(name = s, ':', '|'); + if(name == name_end) { + s = statsd_parse_skip_spaces(s); + continue; + } + + if(likely(*s == ':')) + s = value_end = (char *) statsd_parse_skip_up_to(value = ++s, '|', '|'); + + if(likely(*s == '|')) + s = type_end = (char *) statsd_parse_skip_up_to(type = ++s, '|', '@'); + + if(likely(*s == '|' || *s == '@')) { + s = sampling_end = (char *) statsd_parse_skip_up_to(sampling = ++s, '\r', '\n'); + if(*sampling == '@') sampling++; + } + + // skip everything until the end of the line + while(*s && *s != '\n') s++; + + if(unlikely(require_newlines && *s != '\n' && s > buffer)) { + // move the remaining data to the beginning + size -= (name - buffer); + memmove(buffer, name, size); + return size; + } + else + s = statsd_parse_skip_spaces(s); + + statsd_process_metric( + statsd_parse_field_trim(name, name_end) + , statsd_parse_field_trim(value, value_end) + , statsd_parse_field_trim(type, type_end) + , statsd_parse_field_trim(sampling, sampling_end) + ); + } + + return 0; +} + + +// -------------------------------------------------------------------------------------------------------------------- +// statsd pollfd interface + +#define STATSD_TCP_BUFFER_SIZE 65536 // minimize tcp reads +#define STATSD_UDP_BUFFER_SIZE 9000 // this should be up to MTU + +typedef enum { + STATSD_SOCKET_DATA_TYPE_TCP, + STATSD_SOCKET_DATA_TYPE_UDP +} STATSD_SOCKET_DATA_TYPE; + +struct statsd_tcp { + STATSD_SOCKET_DATA_TYPE type; + size_t size; + size_t len; + char buffer[]; +}; + +#ifdef HAVE_RECVMMSG +struct statsd_udp { + STATSD_SOCKET_DATA_TYPE type; + size_t size; + struct iovec *iovecs; + struct mmsghdr *msgs; +}; +#else +struct statsd_udp { + STATSD_SOCKET_DATA_TYPE type; + char buffer[STATSD_UDP_BUFFER_SIZE]; +}; +#endif + +// new TCP client connected +static void *statsd_add_callback(int fd, short int *events) { + (void)fd; + *events = POLLIN; + + struct statsd_tcp *data = (struct statsd_tcp *)callocz(sizeof(struct statsd_tcp) + STATSD_TCP_BUFFER_SIZE, 1); + data->type = STATSD_SOCKET_DATA_TYPE_TCP; + data->size = STATSD_TCP_BUFFER_SIZE - 1; + + return data; +} + +// TCP client disconnected +static void statsd_del_callback(int fd, void *data) { + (void)fd; + + if(data) { + struct statsd_tcp *t = data; + if(t->type == STATSD_SOCKET_DATA_TYPE_TCP) { + if(t->len != 0) { + statsd.socket_errors++; + error("STATSD: client is probably sending unterminated metrics. Closed socket left with '%s'. Trying to process it.", t->buffer); + statsd_process(t->buffer, t->len, 0); + } + } + else + error("STATSD: internal error: received socket data type is %d, but expected %d", (int)t->type, (int)STATSD_SOCKET_DATA_TYPE_TCP); + + freez(data); + } + + return; +} + +// Receive data +static int statsd_rcv_callback(int fd, int socktype, void *data, short int *events) { + *events = POLLIN; + + switch(socktype) { + case SOCK_STREAM: { + struct statsd_tcp *d = (struct statsd_tcp *)data; + if(unlikely(!d)) { + error("STATSD: internal error: expected TCP data pointer is NULL"); + statsd.socket_errors++; + return -1; + } + +#ifdef NETDATA_INTERNAL_CHECKS + if(unlikely(d->type != STATSD_SOCKET_DATA_TYPE_TCP)) { + error("STATSD: internal error: socket data type should be %d, but it is %d", (int)STATSD_SOCKET_DATA_TYPE_TCP, (int)d->type); + statsd.socket_errors++; + return -1; + } +#endif + + int ret = 0; + ssize_t rc; + do { + rc = recv(fd, &d->buffer[d->len], d->size - d->len, MSG_DONTWAIT); + if (rc < 0) { + // read failed + if (errno != EWOULDBLOCK && errno != EAGAIN && errno != EINTR) { + error("STATSD: recv() on TCP socket %d failed.", fd); + statsd.socket_errors++; + ret = -1; + } + } + else if (!rc) { + // connection closed + debug(D_STATSD, "STATSD: client disconnected."); + ret = -1; + } + else { + // data received + d->len += rc; + statsd.tcp_socket_reads++; + statsd.tcp_bytes_read += rc; + } + + if(likely(d->len > 0)) { + statsd.tcp_packets_received++; + d->len = statsd_process(d->buffer, d->len, 1); + } + + if(unlikely(ret == -1)) + return -1; + + } while (rc != -1); + break; + } + + case SOCK_DGRAM: { + struct statsd_udp *d = (struct statsd_udp *)data; + if(unlikely(!d)) { + error("STATSD: internal error: expected UDP data pointer is NULL"); + statsd.socket_errors++; + return -1; + } + +#ifdef NETDATA_INTERNAL_CHECKS + if(unlikely(d->type != STATSD_SOCKET_DATA_TYPE_UDP)) { + error("STATSD: internal error: socket data should be %d, but it is %d", (int)d->type, (int)STATSD_SOCKET_DATA_TYPE_UDP); + statsd.socket_errors++; + return -1; + } +#endif + +#ifdef HAVE_RECVMMSG + ssize_t rc; + do { + rc = recvmmsg(fd, d->msgs, (unsigned int)d->size, MSG_DONTWAIT, NULL); + if (rc < 0) { + // read failed + if (errno != EWOULDBLOCK && errno != EAGAIN && errno != EINTR) { + error("STATSD: recvmmsg() on UDP socket %d failed.", fd); + statsd.socket_errors++; + return -1; + } + } else if (rc) { + // data received + statsd.udp_socket_reads++; + statsd.udp_packets_received += rc; + + size_t i; + for (i = 0; i < (size_t)rc; ++i) { + size_t len = (size_t)d->msgs[i].msg_len; + statsd.udp_bytes_read += len; + statsd_process(d->msgs[i].msg_hdr.msg_iov->iov_base, len, 0); + } + } + } while (rc != -1); + +#else // !HAVE_RECVMMSG + ssize_t rc; + do { + rc = recv(fd, d->buffer, STATSD_UDP_BUFFER_SIZE - 1, MSG_DONTWAIT); + if (rc < 0) { + // read failed + if (errno != EWOULDBLOCK && errno != EAGAIN && errno != EINTR) { + error("STATSD: recv() on UDP socket %d failed.", fd); + statsd.socket_errors++; + return -1; + } + } else if (rc) { + // data received + statsd.udp_socket_reads++; + statsd.udp_packets_received++; + statsd.udp_bytes_read += rc; + statsd_process(d->buffer, (size_t) rc, 0); + } + } while (rc != -1); +#endif + + break; + } + + default: { + error("STATSD: internal error: unknown socktype %d on socket %d", socktype, fd); + statsd.socket_errors++; + return -1; + } + } + + return 0; +} + +static int statsd_snd_callback(int fd, int socktype, void *data, short int *events) { + (void)fd; + (void)socktype; + (void)data; + (void)events; + + error("STATSD: snd_callback() called, but we never requested to send data to statsd clients."); + return -1; +} + +// -------------------------------------------------------------------------------------------------------------------- +// statsd child thread to collect metrics from network + +void statsd_collector_thread_cleanup(void *data) { + struct statsd_udp *d = data; + +#ifdef HAVE_RECVMMSG + size_t i; + for (i = 0; i < d->size; i++) + freez(d->iovecs[i].iov_base); + + freez(d->iovecs); + freez(d->msgs); +#endif + + freez(d); +} + +void *statsd_collector_thread(void *ptr) { + int id = *((int *)ptr); + + info("STATSD collector thread No %d created with task id %d", id + 1, gettid()); + + if(pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL) != 0) + error("Cannot set pthread cancel type to DEFERRED."); + + if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0) + error("Cannot set pthread cancel state to ENABLE."); + + struct statsd_udp *d = callocz(sizeof(struct statsd_udp), 1); + pthread_cleanup_push(statsd_collector_thread_cleanup, d); + +#ifdef HAVE_RECVMMSG + d->type = STATSD_SOCKET_DATA_TYPE_UDP; + d->size = statsd.recvmmsg_size; + d->iovecs = callocz(sizeof(struct iovec), d->size); + d->msgs = callocz(sizeof(struct mmsghdr), d->size); + + size_t i; + for (i = 0; i < d->size; i++) { + d->iovecs[i].iov_base = mallocz(STATSD_UDP_BUFFER_SIZE); + d->iovecs[i].iov_len = STATSD_UDP_BUFFER_SIZE - 1; + d->msgs[i].msg_hdr.msg_iov = &d->iovecs[i]; + d->msgs[i].msg_hdr.msg_iovlen = 1; + } +#endif + + poll_events(&statsd.sockets + , statsd_add_callback + , statsd_del_callback + , statsd_rcv_callback + , statsd_snd_callback + , (void *)d + ); + + pthread_cleanup_pop(1); + + debug(D_WEB_CLIENT, "STATSD: exit!"); + pthread_exit(NULL); + return NULL; +} + + +// -------------------------------------------------------------------------------------------------------------------- +// statsd applications configuration files parsing + +#define STATSD_CONF_LINE_MAX 8192 + +int statsd_readfile(const char *path, const char *filename) { + debug(D_STATSD, "STATSD configuration reading file '%s/%s'", path, filename); + + char buffer[STATSD_CONF_LINE_MAX + 1]; + + FILE *fp = NULL; + snprintfz(buffer, STATSD_CONF_LINE_MAX, "%s/%s", path, filename); + fp = fopen(buffer, "r"); + if(!fp) { + error("STATSD: cannot open file '%s'.", buffer); + return -1; + } + + STATSD_APP *app = NULL; + STATSD_APP_CHART *chart = NULL; + + size_t line = 0; + char *s; + while(fgets(buffer, STATSD_CONF_LINE_MAX, fp) != NULL) { + buffer[STATSD_CONF_LINE_MAX] = '\0'; + line++; + + s = trim(buffer); + if (!s || *s == '#') { + debug(D_STATSD, "STATSD: ignoring line %zu of file '%s/%s', it is empty.", line, path, filename); + continue; + } + debug(D_STATSD, "STATSD: processing line %zu of file '%s/%s': %s", line, path, filename, buffer); + + int len = (int) strlen(s); + if (*s == '[' && s[len - 1] == ']') { + // new section + s[len - 1] = '\0'; + s++; + + if (!strcmp(s, "app")) { + // a new app + app = callocz(sizeof(STATSD_APP), 1); + app->name = strdupz("unnamed"); + app->rrd_memory_mode = localhost->rrd_memory_mode; + app->rrd_history_entries = localhost->rrd_history_entries; + + app->next = statsd.apps; + statsd.apps = app; + chart = NULL; + } + else if(app) { + // a new chart + chart = callocz(sizeof(STATSD_APP_CHART), 1); + netdata_fix_chart_id(s); + chart->id = strdupz(s); + chart->name = strdupz(s); + chart->title = strdupz("Statsd chart"); + chart->context = strdupz(s); + chart->family = strdupz("overview"); + chart->units = strdupz("value"); + chart->priority = STATSD_CHART_PRIORITY; + chart->chart_type = RRDSET_TYPE_LINE; + + chart->next = app->charts; + app->charts = chart; + } + else + error("STATSD: ignoring line %zu ('%s') of file '%s/%s', [app] is not defined.", line, s, path, filename); + + continue; + } + + if(!app) { + error("STATSD: ignoring line %zu ('%s') of file '%s/%s', it is outside all sections.", line, s, path, filename); + continue; + } + + char *name = s; + char *value = strchr(s, '='); + if(!value) { + error("STATSD: ignoring line %zu ('%s') of file '%s/%s', there is no = in it.", line, s, path, filename); + continue; + } + *value = '\0'; + value++; + + name = trim(name); + value = trim(value); + + if(!name || *name == '#') { + error("STATSD: ignoring line %zu of file '%s/%s', name is empty.", line, path, filename); + continue; + } + if(!value) { + debug(D_CONFIG, "STATSD: ignoring line %zu of file '%s/%s', value is empty.", line, path, filename); + continue; + } + + if(!chart) { + if(!strcmp(name, "name")) { + freez((void *)app->name); + netdata_fix_chart_name(value); + app->name = strdupz(value); + } + else if (!strcmp(name, "metrics")) { + simple_pattern_free(app->metrics); + app->metrics = simple_pattern_create(value, SIMPLE_PATTERN_EXACT); + } + else if (!strcmp(name, "private charts")) { + if (!strcmp(value, "yes") || !strcmp(value, "on")) + app->default_options |= STATSD_METRIC_OPTION_PRIVATE_CHART_ENABLED; + else + app->default_options &= ~STATSD_METRIC_OPTION_PRIVATE_CHART_ENABLED; + } + else if (!strcmp(name, "gaps when not collected")) { + if (!strcmp(value, "yes") || !strcmp(value, "on")) + app->default_options |= STATSD_METRIC_OPTION_SHOW_GAPS_WHEN_NOT_COLLECTED; + } + else if (!strcmp(name, "memory mode")) { + app->rrd_memory_mode = rrd_memory_mode_id(value); + } + else if (!strcmp(name, "history")) { + app->rrd_history_entries = atol(value); + if (app->rrd_history_entries < 5) + app->rrd_history_entries = 5; + } + else { + error("STATSD: ignoring line %zu ('%s') of file '%s/%s'. Unknown keyword for the [app] section.", line, name, path, filename); + continue; + } + } + else { + if(!strcmp(name, "name")) { + freez((void *)chart->name); + netdata_fix_chart_id(value); + chart->name = strdupz(value); + } + else if(!strcmp(name, "title")) { + freez((void *)chart->title); + chart->title = strdupz(value); + } + else if (!strcmp(name, "family")) { + freez((void *)chart->family); + chart->family = strdupz(value); + } + else if (!strcmp(name, "context")) { + freez((void *)chart->context); + netdata_fix_chart_id(value); + chart->context = strdupz(value); + } + else if (!strcmp(name, "units")) { + freez((void *)chart->units); + chart->units = strdupz(value); + } + else if (!strcmp(name, "priority")) { + chart->priority = atol(value); + } + else if (!strcmp(name, "type")) { + chart->chart_type = rrdset_type_id(value); + } + else if (!strcmp(name, "dimension")) { + // metric [name [type [multiplier [divisor]]]] + char *words[5]; + pluginsd_split_words(value, words, 5); + + char *metric_name = words[0]; + char *dim_name = words[1]; + char *type = words[2]; + char *multipler = words[3]; + char *divisor = words[4]; + + STATSD_APP_CHART_DIM *dim = callocz(sizeof(STATSD_APP_CHART_DIM), 1); + + dim->metric = strdupz(metric_name); + dim->metric_hash = simple_hash(dim->metric); + + dim->name = strdupz((dim_name && *dim_name)?dim_name:metric_name); + dim->multiplier = (multipler && *multipler)?str2l(multipler):1; + dim->divisor = (divisor && *divisor)?str2l(divisor):1; + + if(!type || !*type) type = "last"; + if(!strcmp(type, "events")) dim->value_type = STATSD_APP_CHART_DIM_VALUE_TYPE_EVENTS; + else if(!strcmp(type, "last")) dim->value_type = STATSD_APP_CHART_DIM_VALUE_TYPE_LAST; + else if(!strcmp(type, "min")) dim->value_type = STATSD_APP_CHART_DIM_VALUE_TYPE_MIN; + else if(!strcmp(type, "max")) dim->value_type = STATSD_APP_CHART_DIM_VALUE_TYPE_MAX; + else if(!strcmp(type, "sum")) dim->value_type = STATSD_APP_CHART_DIM_VALUE_TYPE_SUM; + else if(!strcmp(type, "average")) dim->value_type = STATSD_APP_CHART_DIM_VALUE_TYPE_AVERAGE; + else if(!strcmp(type, "median")) dim->value_type = STATSD_APP_CHART_DIM_VALUE_TYPE_MEDIAN; + else if(!strcmp(type, "stddev")) dim->value_type = STATSD_APP_CHART_DIM_VALUE_TYPE_STDDEV; + else if(!strcmp(type, "percentile")) dim->value_type = STATSD_APP_CHART_DIM_VALUE_TYPE_PERCENTILE; + else { + error("STATSD: invalid type '%s' at line %zu of file '%s/%s'. Using 'last'.", type, line, path, filename); + dim->value_type = STATSD_APP_CHART_DIM_VALUE_TYPE_LAST; + } + + if(!dim->multiplier) { + error("STATSD: invalid multiplier value '%s' at line %zu of file '%s/%s'. Using 1.", multipler, line, path, filename); + dim->multiplier = 1; + } + if(!dim->divisor) { + error("STATSD: invalid divisor value '%s' at line %zu of file '%s/%s'. Using 1.", divisor, line, path, filename); + dim->divisor = 1; + } + + // append it to the list of dimension + STATSD_APP_CHART_DIM *tdim; + for(tdim = chart->dimensions; tdim && tdim->next ; tdim = tdim->next) ; + if(!tdim) { + dim->next = chart->dimensions; + chart->dimensions = dim; + } + else { + dim->next = tdim->next; + tdim->next = dim; + } + chart->dimensions_count++; + + debug(D_STATSD, "Added dimension '%s' to chart '%s' of app '%s', for metric '%s', with type %u, multiplier " COLLECTED_NUMBER_FORMAT ", divisor " COLLECTED_NUMBER_FORMAT, + dim->name, chart->id, app->name, dim->metric, dim->value_type, dim->multiplier, dim->divisor); + } + else { + error("STATSD: ignoring line %zu ('%s') of file '%s/%s'. Unknown keyword for the [%s] section.", line, name, path, filename, chart->id); + continue; + } + } + } + + fclose(fp); + return 0; +} + +static void statsd_readdir(const char *path) { + size_t pathlen = strlen(path); + + debug(D_STATSD, "STATSD configuration reading directory '%s'", path); + + DIR *dir = opendir(path); + if (!dir) { + error("STATSD configuration cannot open directory '%s'.", path); + return; + } + + struct dirent *de = NULL; + while ((de = readdir(dir))) { + size_t len = strlen(de->d_name); + + if(de->d_type == DT_DIR + && ( + (de->d_name[0] == '.' && de->d_name[1] == '\0') + || (de->d_name[0] == '.' && de->d_name[1] == '.' && de->d_name[2] == '\0') + )) { + debug(D_STATSD, "STATSD: ignoring directory '%s'", de->d_name); + continue; + } + + else if(de->d_type == DT_DIR) { + char *s = mallocz(pathlen + strlen(de->d_name) + 2); + strcpy(s, path); + strcat(s, "/"); + strcat(s, de->d_name); + statsd_readdir(s); + freez(s); + continue; + } + + else if((de->d_type == DT_LNK || de->d_type == DT_REG || de->d_type == DT_UNKNOWN) && + len > 5 && !strcmp(&de->d_name[len - 5], ".conf")) { + statsd_readfile(path, de->d_name); + } + + else debug(D_STATSD, "STATSD: ignoring file '%s'", de->d_name); + } + + closedir(dir); +} + +// -------------------------------------------------------------------------------------------------------------------- +// send metrics to netdata - in private charts - called from the main thread + +// extract chart type and chart id from metric name +static inline void statsd_get_metric_type_and_id(STATSD_METRIC *m, char *type, char *id, const char *defid, size_t len) { + char *s; + + snprintfz(type, len, "%s_%s_%s", STATSD_CHART_PREFIX, defid, m->name); + for(s = type; *s ;s++) + if(unlikely(*s == '.')) break; + + if(*s == '.') { + *s++ = '\0'; + strncpyz(id, s, len); + } + else { + strncpyz(id, defid, len); + } + + netdata_fix_chart_id(type); + netdata_fix_chart_id(id); +} + +static inline RRDSET *statsd_private_rrdset_create( + STATSD_METRIC *m + , const char *type + , const char *id + , const char *name + , const char *family + , const char *context + , const char *title + , const char *units + , long priority + , int update_every + , RRDSET_TYPE chart_type +) { + RRD_MEMORY_MODE memory_mode = statsd.private_charts_memory_mode; + long history = statsd.private_charts_rrd_history_entries; + + if(unlikely(statsd.private_charts >= statsd.max_private_charts)) { + debug(D_STATSD, "STATSD: metric '%s' will be charted with memory mode = none, because the maximum number of charts has been reached.", m->name); + info("STATSD: metric '%s' will be charted with memory mode = none, because the maximum number of charts (%zu) has been reached. Increase the number of charts by editing netdata.conf, [statsd] section.", m->name, statsd.max_private_charts); + memory_mode = RRD_MEMORY_MODE_NONE; + history = 5; + } + + statsd.private_charts++; + RRDSET *st = rrdset_create_custom( + localhost + , type + , id + , name + , family + , context + , title + , units + , priority + , update_every + , chart_type + , memory_mode + , history + ); + rrdset_flag_set(st, RRDSET_FLAG_STORE_FIRST); + // rrdset_flag_set(st, RRDSET_FLAG_DEBUG); + return st; +} + +static inline void statsd_private_chart_gauge(STATSD_METRIC *m) { + debug(D_STATSD, "updating private chart for gauge metric '%s'", m->name); + + if(unlikely(!m->st)) { + char type[RRD_ID_LENGTH_MAX + 1], id[RRD_ID_LENGTH_MAX + 1]; + statsd_get_metric_type_and_id(m, type, id, "gauge", RRD_ID_LENGTH_MAX); + + m->st = statsd_private_rrdset_create( + m + , type + , id + , NULL // name + , "gauges" // family (submenu) + , m->name // context + , m->name // title + , "value" // units + , STATSD_CHART_PRIORITY + , statsd.update_every + , RRDSET_TYPE_LINE + ); + + m->rd_value = rrddim_add(m->st, "gauge", NULL, 1, STATSD_DECIMAL_DETAIL, RRD_ALGORITHM_ABSOLUTE); + + if(m->options & STATSD_METRIC_OPTION_CHART_DIMENSION_COUNT) + m->rd_count = rrddim_add(m->st, "events", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); + } + else rrdset_next(m->st); + + rrddim_set_by_pointer(m->st, m->rd_value, m->last); + + if(m->rd_count) + rrddim_set_by_pointer(m->st, m->rd_count, m->events); + + rrdset_done(m->st); +} + +static inline void statsd_private_chart_counter_or_meter(STATSD_METRIC *m, const char *dim, const char *family) { + debug(D_STATSD, "updating private chart for %s metric '%s'", dim, m->name); + + if(unlikely(!m->st)) { + char type[RRD_ID_LENGTH_MAX + 1], id[RRD_ID_LENGTH_MAX + 1]; + statsd_get_metric_type_and_id(m, type, id, dim, RRD_ID_LENGTH_MAX); + + m->st = statsd_private_rrdset_create( + m + , type + , id + , NULL // name + , family // family (submenu) + , m->name // context + , m->name // title + , "events/s" // units + , STATSD_CHART_PRIORITY + , statsd.update_every + , RRDSET_TYPE_AREA + ); + + m->rd_value = rrddim_add(m->st, dim, NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); + + if(m->options & STATSD_METRIC_OPTION_CHART_DIMENSION_COUNT) + m->rd_count = rrddim_add(m->st, "events", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); + } + else rrdset_next(m->st); + + rrddim_set_by_pointer(m->st, m->rd_value, m->last); + + if(m->rd_count) + rrddim_set_by_pointer(m->st, m->rd_count, m->events); + + rrdset_done(m->st); +} + +static inline void statsd_private_chart_set(STATSD_METRIC *m) { + debug(D_STATSD, "updating private chart for set metric '%s'", m->name); + + if(unlikely(!m->st)) { + char type[RRD_ID_LENGTH_MAX + 1], id[RRD_ID_LENGTH_MAX + 1]; + statsd_get_metric_type_and_id(m, type, id, "set", RRD_ID_LENGTH_MAX); + + m->st = statsd_private_rrdset_create( + m + , type + , id + , NULL // name + , "sets" // family (submenu) + , m->name // context + , m->name // title + , "entries" // units + , STATSD_CHART_PRIORITY + , statsd.update_every + , RRDSET_TYPE_LINE + ); + + m->rd_value = rrddim_add(m->st, "set", "set size", 1, 1, RRD_ALGORITHM_ABSOLUTE); + + if(m->options & STATSD_METRIC_OPTION_CHART_DIMENSION_COUNT) + m->rd_count = rrddim_add(m->st, "events", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); + } + else rrdset_next(m->st); + + rrddim_set_by_pointer(m->st, m->rd_value, m->last); + + if(m->rd_count) + rrddim_set_by_pointer(m->st, m->rd_count, m->events); + + rrdset_done(m->st); +} + +static inline void statsd_private_chart_timer_or_histogram(STATSD_METRIC *m, const char *dim, const char *family, const char *units) { + debug(D_STATSD, "updating private chart for %s metric '%s'", dim, m->name); + + if(unlikely(!m->st)) { + char type[RRD_ID_LENGTH_MAX + 1], id[RRD_ID_LENGTH_MAX + 1]; + statsd_get_metric_type_and_id(m, type, id, dim, RRD_ID_LENGTH_MAX); + + m->st = statsd_private_rrdset_create( + m + , type + , id + , NULL // name + , family // family (submenu) + , m->name // context + , m->name // title + , units // units + , STATSD_CHART_PRIORITY + , statsd.update_every + , RRDSET_TYPE_AREA + ); + + m->histogram.ext->rd_min = rrddim_add(m->st, "min", NULL, 1, STATSD_DECIMAL_DETAIL, RRD_ALGORITHM_ABSOLUTE); + m->histogram.ext->rd_max = rrddim_add(m->st, "max", NULL, 1, STATSD_DECIMAL_DETAIL, RRD_ALGORITHM_ABSOLUTE); + m->rd_value = rrddim_add(m->st, "average", NULL, 1, STATSD_DECIMAL_DETAIL, RRD_ALGORITHM_ABSOLUTE); + m->histogram.ext->rd_percentile = rrddim_add(m->st, statsd.histogram_percentile_str, NULL, 1, STATSD_DECIMAL_DETAIL, RRD_ALGORITHM_ABSOLUTE); + m->histogram.ext->rd_median = rrddim_add(m->st, "median", NULL, 1, STATSD_DECIMAL_DETAIL, RRD_ALGORITHM_ABSOLUTE); + m->histogram.ext->rd_stddev = rrddim_add(m->st, "stddev", NULL, 1, STATSD_DECIMAL_DETAIL, RRD_ALGORITHM_ABSOLUTE); + m->histogram.ext->rd_sum = rrddim_add(m->st, "sum", NULL, 1, STATSD_DECIMAL_DETAIL, RRD_ALGORITHM_ABSOLUTE); + + if(m->options & STATSD_METRIC_OPTION_CHART_DIMENSION_COUNT) + m->rd_count = rrddim_add(m->st, "events", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); + } + else rrdset_next(m->st); + + rrddim_set_by_pointer(m->st, m->histogram.ext->rd_min, m->histogram.ext->last_min); + rrddim_set_by_pointer(m->st, m->histogram.ext->rd_max, m->histogram.ext->last_max); + rrddim_set_by_pointer(m->st, m->histogram.ext->rd_percentile, m->histogram.ext->last_percentile); + rrddim_set_by_pointer(m->st, m->histogram.ext->rd_median, m->histogram.ext->last_median); + rrddim_set_by_pointer(m->st, m->histogram.ext->rd_stddev, m->histogram.ext->last_stddev); + rrddim_set_by_pointer(m->st, m->histogram.ext->rd_sum, m->histogram.ext->last_sum); + rrddim_set_by_pointer(m->st, m->rd_value, m->last); + + if(m->rd_count) + rrddim_set_by_pointer(m->st, m->rd_count, m->events); + + rrdset_done(m->st); +} + +// -------------------------------------------------------------------------------------------------------------------- +// statsd flush metrics + +static inline void statsd_flush_gauge(STATSD_METRIC *m) { + debug(D_STATSD, "flushing gauge metric '%s'", m->name); + + int updated = 0; + if(m->count && !m->reset) { + m->last = (collected_number) (m->gauge.value * STATSD_DECIMAL_DETAIL); + + m->reset = 1; + updated = 1; + } + + if(m->options & STATSD_METRIC_OPTION_PRIVATE_CHART_ENABLED && (updated || !(m->options & STATSD_METRIC_OPTION_SHOW_GAPS_WHEN_NOT_COLLECTED))) + statsd_private_chart_gauge(m); +} + +static inline void statsd_flush_counter_or_meter(STATSD_METRIC *m, const char *dim, const char *family) { + debug(D_STATSD, "flushing %s metric '%s'", dim, m->name); + + int updated = 0; + if(m->count && !m->reset) { + m->last = m->counter.value; + + m->reset = 1; + updated = 1; + } + + if(m->options & STATSD_METRIC_OPTION_PRIVATE_CHART_ENABLED && (updated || !(m->options & STATSD_METRIC_OPTION_SHOW_GAPS_WHEN_NOT_COLLECTED))) + statsd_private_chart_counter_or_meter(m, dim, family); +} + +static inline void statsd_flush_counter(STATSD_METRIC *m) { + statsd_flush_counter_or_meter(m, "counter", "counters"); +} + +static inline void statsd_flush_meter(STATSD_METRIC *m) { + statsd_flush_counter_or_meter(m, "meter", "meters"); +} + +static inline void statsd_flush_set(STATSD_METRIC *m) { + debug(D_STATSD, "flushing set metric '%s'", m->name); + + int updated = 0; + if(m->count && !m->reset) { + m->last = (collected_number)m->set.unique; + + m->reset = 1; + updated = 1; + } + + if(m->options & STATSD_METRIC_OPTION_PRIVATE_CHART_ENABLED && (updated || !(m->options & STATSD_METRIC_OPTION_SHOW_GAPS_WHEN_NOT_COLLECTED))) + statsd_private_chart_set(m); +} + +static inline void statsd_flush_timer_or_histogram(STATSD_METRIC *m, const char *dim, const char *family, const char *units) { + debug(D_STATSD, "flushing %s metric '%s'", dim, m->name); + + netdata_mutex_lock(&m->histogram.ext->mutex); + + int updated = 0; + if(m->count && !m->reset && m->histogram.ext->used > 0) { + size_t len = m->histogram.ext->used; + long double *series = m->histogram.ext->values; + sort_series(series, len); + + m->histogram.ext->last_min = (collected_number)roundl(series[0] * STATSD_DECIMAL_DETAIL); + m->histogram.ext->last_max = (collected_number)roundl(series[len - 1] * STATSD_DECIMAL_DETAIL); + m->last = (collected_number)roundl(average(series, len) * STATSD_DECIMAL_DETAIL); + m->histogram.ext->last_median = (collected_number)roundl(median_on_sorted_series(series, len) * STATSD_DECIMAL_DETAIL); + m->histogram.ext->last_stddev = (collected_number)roundl(standard_deviation(series, len) * STATSD_DECIMAL_DETAIL); + m->histogram.ext->last_sum = (collected_number)roundl(sum(series, len) * STATSD_DECIMAL_DETAIL); + + size_t pct_len = (size_t)floor((double)len * statsd.histogram_percentile / 100.0); + if(pct_len < 1) + m->histogram.ext->last_percentile = (collected_number)(series[0] * STATSD_DECIMAL_DETAIL); + else + m->histogram.ext->last_percentile = (collected_number)roundl(average(series, pct_len) * STATSD_DECIMAL_DETAIL); + + debug(D_STATSD, "STATSD %s metric %s: min " COLLECTED_NUMBER_FORMAT ", max " COLLECTED_NUMBER_FORMAT ", last " COLLECTED_NUMBER_FORMAT ", pcent " COLLECTED_NUMBER_FORMAT ", median " COLLECTED_NUMBER_FORMAT ", stddev " COLLECTED_NUMBER_FORMAT ", sum " COLLECTED_NUMBER_FORMAT, + dim, m->name, m->histogram.ext->last_min, m->histogram.ext->last_max, m->last, m->histogram.ext->last_percentile, m->histogram.ext->last_median, m->histogram.ext->last_stddev, m->histogram.ext->last_sum); + + m->reset = 1; + updated = 1; + } + + + if(m->options & STATSD_METRIC_OPTION_PRIVATE_CHART_ENABLED && (updated || !(m->options & STATSD_METRIC_OPTION_SHOW_GAPS_WHEN_NOT_COLLECTED))) + statsd_private_chart_timer_or_histogram(m, dim, family, units); + + netdata_mutex_unlock(&m->histogram.ext->mutex); +} + +static inline void statsd_flush_timer(STATSD_METRIC *m) { + statsd_flush_timer_or_histogram(m, "timer", "timers", "milliseconds"); +} + +static inline void statsd_flush_histogram(STATSD_METRIC *m) { + statsd_flush_timer_or_histogram(m, "histogram", "histograms", "value"); +} + +static inline RRD_ALGORITHM statsd_algorithm_for_metric(STATSD_METRIC *m) { + switch(m->type) { + default: + case STATSD_METRIC_TYPE_GAUGE: + case STATSD_METRIC_TYPE_SET: + case STATSD_METRIC_TYPE_TIMER: + case STATSD_METRIC_TYPE_HISTOGRAM: + return RRD_ALGORITHM_ABSOLUTE; + + case STATSD_METRIC_TYPE_METER: + case STATSD_METRIC_TYPE_COUNTER: + return RRD_ALGORITHM_INCREMENTAL; + } +} + +static inline void check_if_metric_is_for_app(STATSD_INDEX *index, STATSD_METRIC *m) { + (void)index; + + STATSD_APP *app; + for(app = statsd.apps; app ;app = app->next) { + if(unlikely(simple_pattern_matches(app->metrics, m->name))) { + debug(D_STATSD, "metric '%s' matches app '%s'", m->name, app->name); + + // the metric should get the options from the app + + if(app->default_options & STATSD_METRIC_OPTION_PRIVATE_CHART_ENABLED) + m->options |= STATSD_METRIC_OPTION_PRIVATE_CHART_ENABLED; + else + m->options &= ~STATSD_METRIC_OPTION_PRIVATE_CHART_ENABLED; + + if(app->default_options & STATSD_METRIC_OPTION_SHOW_GAPS_WHEN_NOT_COLLECTED) + m->options |= STATSD_METRIC_OPTION_SHOW_GAPS_WHEN_NOT_COLLECTED; + else + m->options &= ~STATSD_METRIC_OPTION_SHOW_GAPS_WHEN_NOT_COLLECTED; + + m->options |= STATSD_METRIC_OPTION_PRIVATE_CHART_CHECKED; + + // check if there is a chart in this app, willing to get this metric + STATSD_APP_CHART *chart; + for(chart = app->charts; chart; chart = chart->next) { + STATSD_APP_CHART_DIM *dim; + for(dim = chart->dimensions; dim ; dim = dim->next) { + if(!dim->value_ptr && dim->metric_hash == m->hash && !strcmp(dim->metric, m->name)) { + // we have a match - this metric should be linked to this dimension + + if(dim->value_type == STATSD_APP_CHART_DIM_VALUE_TYPE_EVENTS) { + dim->value_ptr = &m->events; + dim->algorithm = RRD_ALGORITHM_INCREMENTAL; + } + else if(m->type == STATSD_METRIC_TYPE_HISTOGRAM || m->type == STATSD_METRIC_TYPE_TIMER) { + dim->algorithm = RRD_ALGORITHM_ABSOLUTE; + dim->divisor *= STATSD_DECIMAL_DETAIL; + + switch(dim->value_type) { + case STATSD_APP_CHART_DIM_VALUE_TYPE_EVENTS: + // will never match - added to avoid warning + break; + + case STATSD_APP_CHART_DIM_VALUE_TYPE_LAST: + case STATSD_APP_CHART_DIM_VALUE_TYPE_AVERAGE: + dim->value_ptr = &m->last; + break; + + case STATSD_APP_CHART_DIM_VALUE_TYPE_SUM: + dim->value_ptr = &m->histogram.ext->last_sum; + break; + + case STATSD_APP_CHART_DIM_VALUE_TYPE_MIN: + dim->value_ptr = &m->histogram.ext->last_min; + break; + + case STATSD_APP_CHART_DIM_VALUE_TYPE_MAX: + dim->value_ptr = &m->histogram.ext->last_max; + break; + + case STATSD_APP_CHART_DIM_VALUE_TYPE_MEDIAN: + dim->value_ptr = &m->histogram.ext->last_median; + break; + + case STATSD_APP_CHART_DIM_VALUE_TYPE_PERCENTILE: + dim->value_ptr = &m->histogram.ext->last_percentile; + break; + + case STATSD_APP_CHART_DIM_VALUE_TYPE_STDDEV: + dim->value_ptr = &m->histogram.ext->last_stddev; + break; + } + } + else { + if (dim->value_type != STATSD_APP_CHART_DIM_VALUE_TYPE_LAST) + error("STATSD: unsupported value type for dimension '%s' of chart '%s' of app '%s' on metric '%s'", dim->name, chart->id, app->name, m->name); + + dim->value_ptr = &m->last; + dim->algorithm = statsd_algorithm_for_metric(m); + + if(m->type == STATSD_METRIC_TYPE_GAUGE) + dim->divisor *= STATSD_DECIMAL_DETAIL; + } + + if(unlikely(chart->st && dim->rd)) { + rrddim_set_algorithm(chart->st, dim->rd, dim->algorithm); + rrddim_set_multiplier(chart->st, dim->rd, dim->multiplier); + rrddim_set_divisor(chart->st, dim->rd, dim->divisor); + } + + chart->dimensions_linked_count++; + debug(D_STATSD, "metric '%s' of type %u linked with app '%s', chart '%s', dimension '%s', algorithm '%s'", m->name, m->type, app->name, chart->id, dim->name, rrd_algorithm_name(dim->algorithm)); + } + } + } + } + } +} + +static inline void statsd_update_app_chart(STATSD_APP *app, STATSD_APP_CHART *chart) { + debug(D_STATSD, "updating chart '%s' for app '%s'", chart->id, app->name); + + if(!chart->st) { + chart->st = rrdset_create_custom( + localhost + , app->name + , chart->id + , chart->name + , chart->family + , chart->context + , chart->title + , chart->units + , chart->priority + , statsd.update_every + , chart->chart_type + , app->rrd_memory_mode + , app->rrd_history_entries + ); + + rrdset_flag_set(chart->st, RRDSET_FLAG_STORE_FIRST); + // rrdset_flag_set(chart->st, RRDSET_FLAG_DEBUG); + } + else rrdset_next(chart->st); + + STATSD_APP_CHART_DIM *dim; + for(dim = chart->dimensions; dim ;dim = dim->next) { + if(unlikely(!dim->rd)) + dim->rd = rrddim_add(chart->st, dim->name, NULL, dim->multiplier, dim->divisor, dim->algorithm); + + if(unlikely(dim->value_ptr)) { + debug(D_STATSD, "updating dimension '%s' (%s) of chart '%s' (%s) for app '%s' with value " COLLECTED_NUMBER_FORMAT, dim->name, dim->rd->id, chart->id, chart->st->id, app->name, *dim->value_ptr); + rrddim_set_by_pointer(chart->st, dim->rd, *dim->value_ptr); + } + } + + rrdset_done(chart->st); + debug(D_STATSD, "completed update of chart '%s' for app '%s'", chart->id, app->name); +} + +static inline void statsd_update_all_app_charts(void) { + // debug(D_STATSD, "updating app charts"); + + STATSD_APP *app; + for(app = statsd.apps; app ;app = app->next) { + // debug(D_STATSD, "updating charts for app '%s'", app->name); + + STATSD_APP_CHART *chart; + for(chart = app->charts; chart ;chart = chart->next) { + if(unlikely(chart->dimensions_linked_count)) { + statsd_update_app_chart(app, chart); + } + } + } + + // debug(D_STATSD, "completed update of app charts"); +} + +static inline void statsd_flush_index_metrics(STATSD_INDEX *index, void (*flush_metric)(STATSD_METRIC *)) { + STATSD_METRIC *m; + for(m = index->first; m ; m = m->next) { + if(unlikely(!(m->options & STATSD_METRIC_OPTION_CHECKED_IN_APPS))) { + check_if_metric_is_for_app(index, m); + m->options |= STATSD_METRIC_OPTION_CHECKED_IN_APPS; + } + + if(unlikely(!(m->options & STATSD_METRIC_OPTION_PRIVATE_CHART_CHECKED))) { + if(statsd.private_charts >= statsd.max_private_charts_hard) { + debug(D_STATSD, "STATSD: metric '%s' will not be charted, because the hard limit of the maximum number of charts has been reached.", m->name); + info("STATSD: metric '%s' will not be charted, because the hard limit of the maximum number of charts (%zu) has been reached. Increase the number of charts by editing netdata.conf, [statsd] section.", m->name, statsd.max_private_charts); + m->options &= ~STATSD_METRIC_OPTION_PRIVATE_CHART_ENABLED; + } + else { + if (simple_pattern_matches(statsd.charts_for, m->name)) { + debug(D_STATSD, "STATSD: metric '%s' will be charted.", m->name); + m->options |= STATSD_METRIC_OPTION_PRIVATE_CHART_ENABLED; + } else { + debug(D_STATSD, "STATSD: metric '%s' will not be charted.", m->name); + m->options &= ~STATSD_METRIC_OPTION_PRIVATE_CHART_ENABLED; + } + } + + m->options |= STATSD_METRIC_OPTION_PRIVATE_CHART_CHECKED; + } + + flush_metric(m); + } +} + + +// -------------------------------------------------------------------------------------- +// statsd main thread + +int statsd_listen_sockets_setup(void) { + return listen_sockets_setup(&statsd.sockets); +} + +void statsd_main_cleanup(void *data) { + pthread_t *threads = data; + + int i; + for(i = 0; i < statsd.threads ;i++) + pthread_cancel(threads[i]); + + listen_sockets_close(&statsd.sockets); +} + +void *statsd_main(void *ptr) { + (void)ptr; + + info("STATSD main thread created with task id %d", gettid()); + + if(pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL) != 0) + error("Cannot set pthread cancel type to DEFERRED."); + + if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0) + error("Cannot set pthread cancel state to ENABLE."); + + // ---------------------------------------------------------------------------------------------------------------- + // statsd configuration + + statsd.enabled = config_get_boolean(CONFIG_SECTION_STATSD, "enabled", statsd.enabled); + + statsd.update_every = default_rrd_update_every; + statsd.update_every = (int)config_get_number(CONFIG_SECTION_STATSD, "update every (flushInterval)", statsd.update_every); + if(statsd.update_every < default_rrd_update_every) { + error("STATSD: minimum flush interval %d given, but the minimum is the update every of netdata. Using %d", statsd.update_every, default_rrd_update_every); + statsd.update_every = default_rrd_update_every; + } + +#ifdef HAVE_RECVMMSG + statsd.recvmmsg_size = (size_t)config_get_number(CONFIG_SECTION_STATSD, "udp messages to process at once", (long long)statsd.recvmmsg_size); +#endif + + statsd.charts_for = simple_pattern_create(config_get(CONFIG_SECTION_STATSD, "create private charts for metrics matching", "*"), SIMPLE_PATTERN_EXACT); + statsd.max_private_charts = (size_t)config_get_number(CONFIG_SECTION_STATSD, "max private charts allowed", (long long)statsd.max_private_charts); + statsd.max_private_charts_hard = (size_t)config_get_number(CONFIG_SECTION_STATSD, "max private charts hard limit", (long long)statsd.max_private_charts * 5); + statsd.private_charts_memory_mode = rrd_memory_mode_id(config_get(CONFIG_SECTION_STATSD, "private charts memory mode", rrd_memory_mode_name(default_rrd_memory_mode))); + statsd.private_charts_rrd_history_entries = (int)config_get_number(CONFIG_SECTION_STATSD, "private charts history", default_rrd_history_entries); + + statsd.histogram_percentile = (double)config_get_float(CONFIG_SECTION_STATSD, "histograms and timers percentile (percentThreshold)", statsd.histogram_percentile); + if(isless(statsd.histogram_percentile, 0) || isgreater(statsd.histogram_percentile, 100)) { + error("STATSD: invalid histograms and timers percentile %0.5f given", statsd.histogram_percentile); + statsd.histogram_percentile = 95.0; + } + { + char buffer[100 + 1]; + snprintf(buffer, 100, "%0.1f%%", statsd.histogram_percentile); + statsd.histogram_percentile_str = strdupz(buffer); + } + + if(config_get_boolean(CONFIG_SECTION_STATSD, "add dimension for number of events received", 1)) { + statsd.gauges.default_options |= STATSD_METRIC_OPTION_CHART_DIMENSION_COUNT; + statsd.counters.default_options |= STATSD_METRIC_OPTION_CHART_DIMENSION_COUNT; + statsd.meters.default_options |= STATSD_METRIC_OPTION_CHART_DIMENSION_COUNT; + statsd.sets.default_options |= STATSD_METRIC_OPTION_CHART_DIMENSION_COUNT; + statsd.histograms.default_options |= STATSD_METRIC_OPTION_CHART_DIMENSION_COUNT; + statsd.timers.default_options |= STATSD_METRIC_OPTION_CHART_DIMENSION_COUNT; + } + + if(config_get_boolean(CONFIG_SECTION_STATSD, "gaps on gauges (deleteGauges)", 0)) + statsd.gauges.default_options |= STATSD_METRIC_OPTION_SHOW_GAPS_WHEN_NOT_COLLECTED; + + if(config_get_boolean(CONFIG_SECTION_STATSD, "gaps on counters (deleteCounters)", 0)) + statsd.counters.default_options |= STATSD_METRIC_OPTION_SHOW_GAPS_WHEN_NOT_COLLECTED; + + if(config_get_boolean(CONFIG_SECTION_STATSD, "gaps on meters (deleteMeters)", 0)) + statsd.meters.default_options |= STATSD_METRIC_OPTION_SHOW_GAPS_WHEN_NOT_COLLECTED; + + if(config_get_boolean(CONFIG_SECTION_STATSD, "gaps on sets (deleteSets)", 0)) + statsd.sets.default_options |= STATSD_METRIC_OPTION_SHOW_GAPS_WHEN_NOT_COLLECTED; + + if(config_get_boolean(CONFIG_SECTION_STATSD, "gaps on histograms (deleteHistograms)", 0)) + statsd.histograms.default_options |= STATSD_METRIC_OPTION_SHOW_GAPS_WHEN_NOT_COLLECTED; + + if(config_get_boolean(CONFIG_SECTION_STATSD, "gaps on timers (deleteTimers)", 0)) + statsd.timers.default_options |= STATSD_METRIC_OPTION_SHOW_GAPS_WHEN_NOT_COLLECTED; + +#ifdef STATSD_MULTITHREADED + statsd.threads = (int)config_get_number(CONFIG_SECTION_STATSD, "threads", processors); + if(statsd.threads < 1) { + error("STATSD: Invalid number of threads %d, using %d", statsd.threads, processors); + statsd.threads = processors; + config_set_number(CONFIG_SECTION_STATSD, "collector threads", statsd.threads); + } +#else + statsd.threads = 1; +#endif + + // read custom application definitions + { + char filename[FILENAME_MAX + 1]; + snprintfz(filename, FILENAME_MAX, "%s/statsd.d", netdata_configured_config_dir); + statsd_readdir(filename); + } + + // ---------------------------------------------------------------------------------------------------------------- + // statsd setup + + if(!statsd.enabled) return NULL; + + statsd_listen_sockets_setup(); + if(!statsd.sockets.opened) { + error("STATSD: No statsd sockets to listen to. statsd will be disabled."); + pthread_exit(NULL); + } + + pthread_t threads[statsd.threads]; + int i; + + for(i = 0; i < statsd.threads ;i++) { + if(pthread_create(&threads[i], NULL, statsd_collector_thread, &i)) + error("STATSD: failed to create child thread."); + + else if(pthread_detach(threads[i])) + error("STATSD: cannot request detach of child thread."); + } + + pthread_cleanup_push(statsd_main_cleanup, &threads); + + // ---------------------------------------------------------------------------------------------------------------- + // statsd monitoring charts + + RRDSET *st_metrics = rrdset_create_localhost( + "netdata" + , "statsd_metrics" + , NULL + , "statsd" + , NULL + , "Metrics in the netdata statsd database" + , "metrics" + , 132000 + , statsd.update_every + , RRDSET_TYPE_STACKED + ); + RRDDIM *rd_metrics_gauge = rrddim_add(st_metrics, "gauges", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE); + RRDDIM *rd_metrics_counter = rrddim_add(st_metrics, "counters", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE); + RRDDIM *rd_metrics_timer = rrddim_add(st_metrics, "timers", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE); + RRDDIM *rd_metrics_meter = rrddim_add(st_metrics, "meters", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE); + RRDDIM *rd_metrics_histogram = rrddim_add(st_metrics, "histograms", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE); + RRDDIM *rd_metrics_set = rrddim_add(st_metrics, "sets", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE); + + RRDSET *st_events = rrdset_create_localhost( + "netdata" + , "statsd_events" + , NULL + , "statsd" + , NULL + , "Events processed by the netdata statsd server" + , "events/s" + , 132001 + , statsd.update_every + , RRDSET_TYPE_STACKED + ); + RRDDIM *rd_events_gauge = rrddim_add(st_events, "gauges", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); + RRDDIM *rd_events_counter = rrddim_add(st_events, "counters", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); + RRDDIM *rd_events_timer = rrddim_add(st_events, "timers", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); + RRDDIM *rd_events_meter = rrddim_add(st_events, "meters", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); + RRDDIM *rd_events_histogram = rrddim_add(st_events, "histograms", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); + RRDDIM *rd_events_set = rrddim_add(st_events, "sets", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); + RRDDIM *rd_events_unknown = rrddim_add(st_events, "unknown", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); + RRDDIM *rd_events_errors = rrddim_add(st_events, "errors", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); + + RRDSET *st_reads = rrdset_create_localhost( + "netdata" + , "statsd_reads" + , NULL + , "statsd" + , NULL + , "Read operations made by the netdata statsd server" + , "reads/s" + , 132002 + , statsd.update_every + , RRDSET_TYPE_STACKED + ); + RRDDIM *rd_reads_tcp = rrddim_add(st_reads, "tcp", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); + RRDDIM *rd_reads_udp = rrddim_add(st_reads, "udp", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); + + RRDSET *st_bytes = rrdset_create_localhost( + "netdata" + , "statsd_bytes" + , NULL + , "statsd" + , NULL + , "Bytes read by the netdata statsd server" + , "kbps" + , 132003 + , statsd.update_every + , RRDSET_TYPE_STACKED + ); + RRDDIM *rd_bytes_tcp = rrddim_add(st_bytes, "tcp", NULL, 8, 1024, RRD_ALGORITHM_INCREMENTAL); + RRDDIM *rd_bytes_udp = rrddim_add(st_bytes, "udp", NULL, 8, 1024, RRD_ALGORITHM_INCREMENTAL); + + RRDSET *st_packets = rrdset_create_localhost( + "netdata" + , "statsd_packets" + , NULL + , "statsd" + , NULL + , "Network packets processed by the netdata statsd server" + , "packets/s" + , 132004 + , statsd.update_every + , RRDSET_TYPE_STACKED + ); + RRDDIM *rd_packets_tcp = rrddim_add(st_packets, "tcp", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); + RRDDIM *rd_packets_udp = rrddim_add(st_packets, "udp", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL); + + RRDSET *st_pcharts = rrdset_create_localhost( + "netdata" + , "private_charts" + , NULL + , "statsd" + , NULL + , "Private metric charts created by the netdata statsd server" + , "charts" + , 132010 + , statsd.update_every + , RRDSET_TYPE_AREA + ); + RRDDIM *rd_pcharts = rrddim_add(st_pcharts, "charts", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE); + + + // ---------------------------------------------------------------------------------------------------------------- + // statsd thread to turn metrics into charts + + usec_t step = statsd.update_every * USEC_PER_SEC; + heartbeat_t hb; + heartbeat_init(&hb); + for(;;) { + usec_t hb_dt = heartbeat_next(&hb, step); + + if(unlikely(netdata_exit)) + break; + + statsd_flush_index_metrics(&statsd.gauges, statsd_flush_gauge); + statsd_flush_index_metrics(&statsd.counters, statsd_flush_counter); + statsd_flush_index_metrics(&statsd.meters, statsd_flush_meter); + statsd_flush_index_metrics(&statsd.timers, statsd_flush_timer); + statsd_flush_index_metrics(&statsd.histograms, statsd_flush_histogram); + statsd_flush_index_metrics(&statsd.sets, statsd_flush_set); + + statsd_update_all_app_charts(); + + if(unlikely(netdata_exit)) + break; + + if(hb_dt) { + rrdset_next(st_metrics); + rrdset_next(st_events); + rrdset_next(st_reads); + rrdset_next(st_bytes); + rrdset_next(st_packets); + rrdset_next(st_pcharts); + } + + rrddim_set_by_pointer(st_metrics, rd_metrics_gauge, (collected_number)statsd.gauges.metrics); + rrddim_set_by_pointer(st_metrics, rd_metrics_counter, (collected_number)statsd.counters.metrics); + rrddim_set_by_pointer(st_metrics, rd_metrics_timer, (collected_number)statsd.timers.metrics); + rrddim_set_by_pointer(st_metrics, rd_metrics_meter, (collected_number)statsd.meters.metrics); + rrddim_set_by_pointer(st_metrics, rd_metrics_histogram, (collected_number)statsd.histograms.metrics); + rrddim_set_by_pointer(st_metrics, rd_metrics_set, (collected_number)statsd.sets.metrics); + + rrddim_set_by_pointer(st_events, rd_events_gauge, (collected_number)statsd.gauges.events); + rrddim_set_by_pointer(st_events, rd_events_counter, (collected_number)statsd.counters.events); + rrddim_set_by_pointer(st_events, rd_events_timer, (collected_number)statsd.timers.events); + rrddim_set_by_pointer(st_events, rd_events_meter, (collected_number)statsd.meters.events); + rrddim_set_by_pointer(st_events, rd_events_histogram, (collected_number)statsd.histograms.events); + rrddim_set_by_pointer(st_events, rd_events_set, (collected_number)statsd.sets.events); + rrddim_set_by_pointer(st_events, rd_events_unknown, (collected_number)statsd.unknown_types); + rrddim_set_by_pointer(st_events, rd_events_errors, (collected_number)statsd.socket_errors); + + rrddim_set_by_pointer(st_reads, rd_reads_tcp, (collected_number)statsd.tcp_socket_reads); + rrddim_set_by_pointer(st_reads, rd_reads_udp, (collected_number)statsd.udp_socket_reads); + + rrddim_set_by_pointer(st_bytes, rd_bytes_tcp, (collected_number)statsd.tcp_bytes_read); + rrddim_set_by_pointer(st_bytes, rd_bytes_udp, (collected_number)statsd.udp_bytes_read); + + rrddim_set_by_pointer(st_packets, rd_packets_tcp, (collected_number)statsd.tcp_packets_received); + rrddim_set_by_pointer(st_packets, rd_packets_udp, (collected_number)statsd.udp_packets_received); + + rrddim_set_by_pointer(st_pcharts, rd_pcharts, (collected_number)statsd.private_charts); + + if(unlikely(netdata_exit)) + break; + + rrdset_done(st_metrics); + rrdset_done(st_events); + rrdset_done(st_reads); + rrdset_done(st_bytes); + rrdset_done(st_packets); + rrdset_done(st_pcharts); + + if(unlikely(netdata_exit)) + break; + } + + pthread_cleanup_pop(1); + + pthread_exit(NULL); + return NULL; +} |