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authorLennart Weller <lhw@ring0.de>2017-07-27 09:55:47 +0000
committerLennart Weller <lhw@ring0.de>2017-07-27 09:55:47 +0000
commita133c9c3b637b1dbe7b5b053f7e2572c1950cead (patch)
tree2207939a88e96bca329457f40a9d9d18ab659dc1 /src/statsd.c
parentNew upstream version 1.6.0+dfsg (diff)
downloadnetdata-a133c9c3b637b1dbe7b5b053f7e2572c1950cead.tar.xz
netdata-a133c9c3b637b1dbe7b5b053f7e2572c1950cead.zip
New upstream version 1.7.0+dfsgupstream/1.7.0+dfsg
Diffstat (limited to 'src/statsd.c')
-rw-r--r--src/statsd.c2041
1 files changed, 2041 insertions, 0 deletions
diff --git a/src/statsd.c b/src/statsd.c
new file mode 100644
index 000000000..4dd04757b
--- /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;
+}