8 static BUFFER *rrdpush_buffer = NULL;
9 static pthread_mutex_t rrdpush_mutex = PTHREAD_MUTEX_INITIALIZER;
10 static RRDHOST *last_host = NULL;
12 static inline void rrdpush_lock() {
13 pthread_mutex_lock(&rrdpush_mutex);
16 static inline void rrdpush_unlock() {
17 pthread_mutex_unlock(&rrdpush_mutex);
20 static inline int need_to_send_chart_definitions(RRDSET *st) {
22 rrddim_foreach_read(rd, st)
23 if(rrddim_flag_check(rd, RRDDIM_FLAG_UPDATED) && !rrddim_flag_check(rd, RRDDIM_FLAG_EXPOSED))
29 static inline void send_chart_definitions(RRDSET *st) {
30 buffer_sprintf(rrdpush_buffer, "CHART '%s' '%s' '%s' '%s' '%s' '%s' '%s' %ld %d\n"
37 , rrdset_type_name(st->chart_type)
43 rrddim_foreach_read(rd, st) {
44 buffer_sprintf(rrdpush_buffer, "DIMENSION '%s' '%s' '%s' " COLLECTED_NUMBER_FORMAT " " COLLECTED_NUMBER_FORMAT " '%s %s'\n"
47 , rrd_algorithm_name(rd->algorithm)
50 , rrddim_flag_check(rd, RRDDIM_FLAG_HIDDEN)?"hidden":""
51 , rrddim_flag_check(rd, RRDDIM_FLAG_DONT_DETECT_RESETS_OR_OVERFLOWS)?"noreset":""
53 rrddim_flag_set(rd, RRDDIM_FLAG_EXPOSED);
57 static inline void send_chart_metrics(RRDSET *st) {
58 buffer_sprintf(rrdpush_buffer, "BEGIN %s %llu\n", st->id, st->usec_since_last_update);
61 rrddim_foreach_read(rd, st) {
62 if(rrddim_flag_check(rd, RRDDIM_FLAG_UPDATED))
63 buffer_sprintf(rrdpush_buffer, "SET %s = " COLLECTED_NUMBER_FORMAT "\n"
69 buffer_strcat(rrdpush_buffer, "END\n");
72 static void reset_all_charts(void) {
76 rrdhost_foreach_read(host) {
80 rrdset_foreach_read(st, host) {
84 rrddim_foreach_read(rd, st)
85 rrddim_flag_clear(rd, RRDDIM_FLAG_EXPOSED);
96 void rrdset_done_push(RRDSET *st) {
98 if(unlikely(!rrdset_flag_check(st, RRDSET_FLAG_ENABLED) || !rrdpush_buffer))
104 if(st->rrdhost != last_host) {
105 buffer_sprintf(rrdpush_buffer, "HOST '%s' '%s'\n", st->rrdhost->machine_guid, st->rrdhost->hostname);
106 last_host = st->rrdhost;
109 if(need_to_send_chart_definitions(st))
110 send_chart_definitions(st);
112 send_chart_metrics(st);
114 // signal the sender there are more data
115 if(write(rrdpush_pipe[PIPE_WRITE], " ", 1) == -1)
116 error("Cannot write to internal pipe");
122 void *central_netdata_push_thread(void *ptr) {
123 struct netdata_static_thread *static_thread = (struct netdata_static_thread *)ptr;
125 info("Central netdata push thread created with task id %d", gettid());
127 if(pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL) != 0)
128 error("Cannot set pthread cancel type to DEFERRED.");
130 if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0)
131 error("Cannot set pthread cancel state to ENABLE.");
134 rrdpush_buffer = buffer_create(1);
136 if(pipe(rrdpush_pipe) == -1)
137 fatal("Cannot create required pipe.");
139 struct timeval tv = {
145 size_t max_size = 1024 * 1024;
146 size_t reconnects_counter = 0;
147 size_t sent_bytes = 0;
148 size_t sent_connection = 0;
153 if(unlikely(sock == -1)) {
154 info("PUSH: connecting to central netdata at: %s", central_netdata_to_push_data);
155 sock = connect_to_one_of(central_netdata_to_push_data, 19999, &tv, &reconnects_counter);
157 if(unlikely(sock != -1)) {
158 info("PUSH: connected to central netdata at: %s", central_netdata_to_push_data);
160 if(fcntl(sock, F_SETFL, O_NONBLOCK) < 0)
161 error("PUSH: cannot set non-blocking mode for socket.");
164 error("PUSH: failed to connect to central netdata at: %s", central_netdata_to_push_data);
167 if(buffer_strlen(rrdpush_buffer))
168 error("PUSH: discarding %zu bytes of metrics data already in the buffer.", buffer_strlen(rrdpush_buffer));
170 buffer_flush(rrdpush_buffer);
171 buffer_sprintf(rrdpush_buffer, "GET /stream?key=%s HTTP/1.1\r\nUser-Agent: netdata-push-service/%s\r\nAccept: */*\r\n\r\n", config_get("global", "central netdata api key", ""), VERSION);
177 if(read(rrdpush_pipe[PIPE_READ], buffer, 1) == -1) {
178 error("PUSH: Cannot read from internal pipe.");
182 if(likely(sock != -1 && begin < rrdpush_buffer->len)) {
183 // fprintf(stderr, "PUSH BEGIN\n");
184 // fwrite(&rrdpush_buffer->buffer[begin], 1, rrdpush_buffer->len - begin, stderr);
185 // fprintf(stderr, "\nPUSH END\n");
188 ssize_t ret = send(sock, &rrdpush_buffer->buffer[begin], rrdpush_buffer->len - begin, MSG_DONTWAIT);
190 if(errno != EAGAIN) {
191 error("PUSH: failed to send metrics to central netdata at %s. We have sent %zu bytes on this connection.", central_netdata_to_push_data, sent_connection);
197 sent_connection += ret;
200 if(begin == rrdpush_buffer->len) {
201 buffer_flush(rrdpush_buffer);
208 // protection from overflow
209 if(rrdpush_buffer->len > max_size) {
211 error("PUSH: too many data pending. Buffer is %zu bytes long, %zu unsent. We have sent %zu bytes in total, %zu on this connection. Closing connection to flush the data.", rrdpush_buffer->len, rrdpush_buffer->len - begin, sent_bytes, sent_connection);
219 debug(D_WEB_CLIENT, "Central netdata push thread exits.");
223 static_thread->enabled = 0;