| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | #include "stream.h" |
| 4 | #include "stream-thread.h" |
| 5 | #include "stream-receiver-internals.h" |
| 6 | |
| 7 | #ifdef NETDATA_LOG_STREAM_RECEIVER |
| 8 | void stream_receiver_log_payload(struct receiver_state *rpt, const char *payload, STREAM_TRAFFIC_TYPE type __maybe_unused, bool inbound) { |
| 9 | if (!rpt || type != STREAM_TRAFFIC_TYPE_REPLICATION) return; // not a streaming parser |
| 10 | |
| 11 | spinlock_lock(&rpt->log.spinlock); |
| 12 | |
| 13 | if (!rpt->log.fp) { |
| 14 | char filename[FILENAME_MAX + 1]; |
| 15 | snprintfz( |
| 16 | filename, FILENAME_MAX, "/tmp/stream-receiver-%s.txt", rpt->host ? rrdhost_hostname(rpt->host) : "unknown"); |
| 17 | |
| 18 | rpt->log.fp = fopen(filename, "w"); |
| 19 | |
| 20 | // Align first_call to wall clock time |
| 21 | clock_gettime(CLOCK_REALTIME, &rpt->log.first_call); |
| 22 | rpt->log.first_call.tv_nsec = 0; // Align to the start of the second |
| 23 | } |
| 24 | |
| 25 | if (rpt->log.fp) { |
| 26 | struct timespec now; |
| 27 | clock_gettime(CLOCK_REALTIME, &now); |
| 28 | |
| 29 | time_t elapsed_sec = now.tv_sec - rpt->log.first_call.tv_sec; |
| 30 | long elapsed_nsec = now.tv_nsec - rpt->log.first_call.tv_nsec; |
| 31 | |
| 32 | if (elapsed_nsec < 0) { |
| 33 | elapsed_sec--; |
| 34 | elapsed_nsec += 1000000000; |
| 35 | } |
| 36 | |
| 37 | uint16_t days = elapsed_sec / 86400; |
| 38 | uint8_t hours = (elapsed_sec % 86400) / 3600; |
| 39 | uint8_t minutes = (elapsed_sec % 3600) / 60; |
| 40 | uint8_t seconds = elapsed_sec % 60; |
| 41 | uint16_t milliseconds = elapsed_nsec / 1000000; |
| 42 | |
| 43 | char prefix[30]; |
| 44 | snprintf(prefix, sizeof(prefix), "%03ud.%02u:%02u:%02u.%03u ", |
| 45 | days, hours, minutes, seconds, milliseconds); |
| 46 | |
| 47 | const char *line_start = payload; |
| 48 | const char *line_end; |
| 49 | |
| 50 | while (line_start && *line_start) { |
| 51 | line_end = strchr(line_start, '\n'); |
| 52 | if (line_end) { |
| 53 | fprintf(rpt->log.fp, "%s%s%.*s\n", prefix, inbound ? "> " : "< ", (int)(line_end - line_start), line_start); |
| 54 | line_start = line_end + 1; |
| 55 | } else { |
| 56 | fprintf(rpt->log.fp, "%s%s%s\n", prefix, inbound ? "> " : "< ", line_start); |
| 57 | break; |
| 58 | } |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | fflush(rpt->log.fp); |
| 63 | spinlock_unlock(&rpt->log.spinlock); |
| 64 | } |
| 65 | #endif |
| 66 | |
| 67 | // help the IDE identify use after free |
| 68 | #define stream_receiver_remove(sth, rpt, reason) do { \ |
| 69 | stream_receiver_remove_internal(sth, rpt, reason); \ |
| 70 | (rpt) = NULL; \ |
| 71 | } while(0) |
| 72 | |
| 73 | static void stream_receiver_remove_internal(struct stream_thread *sth, struct receiver_state *rpt, STREAM_HANDSHAKE reason); |
| 74 | |
| 75 | // When a child disconnects this is the maximum we will wait |
| 76 | // before we update the cloud that the child is offline |
| 77 | #define MAX_CHILD_DISC_DELAY (30000) |
| 78 | #define MAX_CHILD_DISC_TOLERANCE (125 / 100) |
| 79 | |
| 80 | static uint32_t streaming_connected_receivers = 0; |
| 81 | |
| 82 | bool plugin_is_enabled(struct plugind *cd); |
| 83 | |
| 84 | uint32_t stream_receivers_currently_connected(void) { |
| 85 | return __atomic_load_n(&streaming_connected_receivers, __ATOMIC_RELAXED); |
| 86 | } |
| 87 | |
| 88 | static void streaming_receiver_connected(void) { |
| 89 | __atomic_add_fetch(&streaming_connected_receivers, 1, __ATOMIC_RELAXED); |
| 90 | } |
| 91 | |
| 92 | static void streaming_receiver_disconnected(void) { |
| 93 | __atomic_sub_fetch(&streaming_connected_receivers, 1, __ATOMIC_RELAXED); |
| 94 | } |
| 95 | |
| 96 | // -------------------------------------------------------------------------------------------------------------------- |
| 97 | |
| 98 | static bool stream_receiver_log_capabilities(BUFFER *wb, void *ptr) { |
| 99 | struct receiver_state *rpt = ptr; |
| 100 | if(!rpt) |
| 101 | return false; |
| 102 | |
| 103 | stream_capabilities_to_string(wb, rpt->capabilities); |
| 104 | return true; |
| 105 | } |
| 106 | |
| 107 | static bool stream_receiver_log_transport(BUFFER *wb, void *ptr) { |
| 108 | struct receiver_state *rpt = ptr; |
| 109 | if(!rpt) |
| 110 | return false; |
| 111 | |
| 112 | buffer_strcat(wb, nd_sock_is_ssl(&rpt->sock) ? "https" : "http"); |
| 113 | return true; |
| 114 | } |
| 115 | |
| 116 | // -------------------------------------------------------------------------------------------------------------------- |
| 117 | |
| 118 | ALWAYS_INLINE |
| 119 | static ssize_t write_stream(struct receiver_state *r, char* buffer, size_t size) { |
| 120 | if(unlikely(!size)) { |
| 121 | internal_error(true, "%s() asked to read zero bytes", __FUNCTION__); |
| 122 | errno_clear(); |
| 123 | return -2; |
| 124 | } |
| 125 | |
| 126 | ssize_t bytes_written = nd_sock_send_nowait(&r->sock, buffer, size); |
| 127 | return bytes_written; |
| 128 | } |
| 129 | |
| 130 | ALWAYS_INLINE |
| 131 | static ssize_t read_stream(struct receiver_state *r, char* buffer, size_t size) { |
| 132 | if(unlikely(!size)) { |
| 133 | internal_error(true, "%s() asked to read zero bytes", __FUNCTION__); |
| 134 | errno_clear(); |
| 135 | return -2; |
| 136 | } |
| 137 | |
| 138 | ssize_t bytes_read = nd_sock_revc_nowait(&r->sock, buffer, size); |
| 139 | return bytes_read; |
| 140 | } |
| 141 | |
| 142 | // -------------------------------------------------------------------------------------------------------------------- |
| 143 | |
| 144 | ALWAYS_INLINE |
| 145 | static ssize_t receiver_read_uncompressed(struct receiver_state *r) { |
| 146 | internal_fatal(r->thread.uncompressed.read_buffer[r->thread.uncompressed.read_len] != '\0', |
| 147 | "%s: read_buffer does not start with zero #2", __FUNCTION__ ); |
| 148 | |
| 149 | ssize_t bytes = read_stream(r, r->thread.uncompressed.read_buffer + r->thread.uncompressed.read_len, sizeof(r->thread.uncompressed.read_buffer) - r->thread.uncompressed.read_len - 1); |
| 150 | if(bytes > 0) { |
| 151 | worker_set_metric(WORKER_RECEIVER_JOB_BYTES_READ, (NETDATA_DOUBLE)bytes); |
| 152 | worker_set_metric(WORKER_RECEIVER_JOB_BYTES_UNCOMPRESSED, (NETDATA_DOUBLE)bytes); |
| 153 | |
| 154 | r->thread.uncompressed.read_len += bytes; |
| 155 | r->thread.uncompressed.read_buffer[r->thread.uncompressed.read_len] = '\0'; |
| 156 | pulse_stream_received_bytes(bytes); |
| 157 | } |
| 158 | |
| 159 | return bytes; |
| 160 | } |
| 161 | |
| 162 | typedef enum { |
| 163 | DECOMPRESS_NEED_MORE_DATA, |
| 164 | DECOMPRESS_FAILED, |
| 165 | DECOMPRESS_OK, |
| 166 | } decompressor_status_t; |
| 167 | |
| 168 | static inline void receiver_move_compressed(struct receiver_state *r) { |
| 169 | size_t remaining = r->thread.compressed.used - r->thread.compressed.start; |
| 170 | if(remaining > 0) { |
| 171 | memmove(r->thread.compressed.buf, r->thread.compressed.buf + r->thread.compressed.start, remaining); |
| 172 | r->thread.compressed.start = 0; |
| 173 | r->thread.compressed.used = remaining; |
| 174 | } |
| 175 | else { |
| 176 | r->thread.compressed.start = 0; |
| 177 | r->thread.compressed.used = 0; |
| 178 | } |
| 179 | } |
| 180 | |
| 181 | ALWAYS_INLINE_HOT_FLATTEN |
| 182 | static decompressor_status_t receiver_feed_decompressor(struct receiver_state *r) { |
| 183 | char *buf = r->thread.compressed.buf; |
| 184 | size_t start = r->thread.compressed.start; |
| 185 | size_t signature_size = r->thread.compressed.decompressor.signature_size; |
| 186 | size_t used = r->thread.compressed.used; |
| 187 | |
| 188 | if(start + signature_size > used) { |
| 189 | // incomplete header, we need to wait for more data |
| 190 | receiver_move_compressed(r); |
| 191 | return DECOMPRESS_NEED_MORE_DATA; |
| 192 | } |
| 193 | |
| 194 | size_t compressed_message_size = |
| 195 | stream_decompressor_start(&r->thread.compressed.decompressor, buf + start, signature_size); |
| 196 | |
| 197 | if (unlikely(!compressed_message_size)) { |
| 198 | nd_log(NDLS_DAEMON, NDLP_ERR, |
| 199 | "STREAM RCV[x] '%s' [from [%s]:%s]: multiplexed uncompressed data in compressed stream!", |
| 200 | rrdhost_hostname(r->host), r->remote_ip, r->remote_port); |
| 201 | return DECOMPRESS_FAILED; |
| 202 | } |
| 203 | |
| 204 | if(unlikely(compressed_message_size > COMPRESSION_MAX_MSG_SIZE)) { |
| 205 | nd_log(NDLS_DAEMON, NDLP_ERR, |
| 206 | "STREAM RCV[x] '%s' [from [%s]:%s]: received a compressed message of %zu bytes, " |
| 207 | "which is bigger than the max compressed message " |
| 208 | "size supported of %zu. Ignoring message.", |
| 209 | rrdhost_hostname(r->host), r->remote_ip, r->remote_port, |
| 210 | compressed_message_size, (size_t)COMPRESSION_MAX_MSG_SIZE); |
| 211 | return DECOMPRESS_FAILED; |
| 212 | } |
| 213 | |
| 214 | if(start + signature_size + compressed_message_size > used) { |
| 215 | // incomplete compressed message, we need to wait for more data |
| 216 | receiver_move_compressed(r); |
| 217 | return DECOMPRESS_NEED_MORE_DATA; |
| 218 | } |
| 219 | |
| 220 | size_t bytes_to_parse = |
| 221 | stream_decompress(&r->thread.compressed.decompressor, buf + start + signature_size, compressed_message_size); |
| 222 | |
| 223 | if (unlikely(!bytes_to_parse)) { |
| 224 | nd_log(NDLS_DAEMON, NDLP_ERR, |
| 225 | "STREAM RCV[x] '%s' [from [%s]:%s]: no bytes to decompress.", |
| 226 | rrdhost_hostname(r->host), r->remote_ip, r->remote_port); |
| 227 | return DECOMPRESS_FAILED; |
| 228 | } |
| 229 | |
| 230 | worker_set_metric(WORKER_RECEIVER_JOB_BYTES_UNCOMPRESSED, (NETDATA_DOUBLE)bytes_to_parse); |
| 231 | |
| 232 | // move the header to the next message |
| 233 | r->thread.compressed.start += signature_size + compressed_message_size; |
| 234 | |
| 235 | return DECOMPRESS_OK; |
| 236 | } |
| 237 | |
| 238 | ALWAYS_INLINE_HOT_FLATTEN |
| 239 | static decompressor_status_t receiver_get_decompressed(struct receiver_state *r) { |
| 240 | if (unlikely(!stream_decompressed_bytes_in_buffer(&r->thread.compressed.decompressor))) |
| 241 | return DECOMPRESS_NEED_MORE_DATA; |
| 242 | |
| 243 | size_t available = sizeof(r->thread.uncompressed.read_buffer) - r->thread.uncompressed.read_len - 1; |
| 244 | if (likely(available)) { |
| 245 | size_t len = stream_decompressor_get( |
| 246 | &r->thread.compressed.decompressor, r->thread.uncompressed.read_buffer + r->thread.uncompressed.read_len, available); |
| 247 | if (unlikely(!len)) { |
| 248 | internal_error(true, "decompressor returned zero length #1"); |
| 249 | return DECOMPRESS_FAILED; |
| 250 | } |
| 251 | |
| 252 | r->thread.uncompressed.read_len += (int)len; |
| 253 | r->thread.uncompressed.read_buffer[r->thread.uncompressed.read_len] = '\0'; |
| 254 | } |
| 255 | else { |
| 256 | internal_fatal(true, "The line to read is too big! Already have %zd bytes in read_buffer.", r->thread.uncompressed.read_len); |
| 257 | return DECOMPRESS_FAILED; |
| 258 | } |
| 259 | |
| 260 | return DECOMPRESS_OK; |
| 261 | } |
| 262 | |
| 263 | ALWAYS_INLINE_HOT_FLATTEN |
| 264 | static ssize_t receiver_read_compressed(struct receiver_state *r) { |
| 265 | |
| 266 | internal_fatal(r->thread.uncompressed.read_buffer[r->thread.uncompressed.read_len] != '\0', |
| 267 | "%s: read_buffer does not start with zero #2", __FUNCTION__ ); |
| 268 | |
| 269 | ssize_t bytes = read_stream(r, r->thread.compressed.buf + r->thread.compressed.used, |
| 270 | r->thread.compressed.size - r->thread.compressed.used); |
| 271 | |
| 272 | if(bytes > 0) { |
| 273 | r->thread.compressed.used += bytes; |
| 274 | worker_set_metric(WORKER_RECEIVER_JOB_BYTES_READ, (NETDATA_DOUBLE)bytes); |
| 275 | pulse_stream_received_bytes(bytes); |
| 276 | } |
| 277 | |
| 278 | return bytes; |
| 279 | } |
| 280 | |
| 281 | // -------------------------------------------------------------------------------------------------------------------- |
| 282 | |
| 283 | static STREAM_HANDSHAKE receiver_set_exit_reason(struct receiver_state *rpt, STREAM_HANDSHAKE reason, bool force) { |
| 284 | if(force || !rpt->exit.reason) |
| 285 | rpt->exit.reason = reason; |
| 286 | |
| 287 | return rpt->exit.reason; |
| 288 | } |
| 289 | |
| 290 | ALWAYS_INLINE |
| 291 | static bool receiver_should_stop(struct receiver_state *rpt) { |
| 292 | if(unlikely(__atomic_load_n(&rpt->exit.shutdown, __ATOMIC_ACQUIRE))) { |
| 293 | receiver_set_exit_reason(rpt, STREAM_HANDSHAKE_DISCONNECT_SIGNALED_TO_STOP, false); |
| 294 | return true; |
| 295 | } |
| 296 | |
| 297 | return false; |
| 298 | } |
| 299 | |
| 300 | // -------------------------------------------------------------------------------------------------------------------- |
| 301 | |
| 302 | ALWAYS_INLINE |
| 303 | void stream_receiver_handle_op(struct stream_thread *sth, struct receiver_state *rpt, struct stream_opcode *msg) { |
| 304 | ND_LOG_STACK lgs[] = { |
| 305 | ND_LOG_FIELD_STR(NDF_NIDL_NODE, rpt->host->hostname), |
| 306 | ND_LOG_FIELD_TXT(NDF_SRC_IP, rpt->remote_ip), |
| 307 | ND_LOG_FIELD_TXT(NDF_SRC_PORT, rpt->remote_port), |
| 308 | ND_LOG_FIELD_CB(NDF_SRC_TRANSPORT, stream_receiver_log_transport, rpt), |
| 309 | ND_LOG_FIELD_CB(NDF_SRC_CAPABILITIES, stream_receiver_log_capabilities, rpt), |
| 310 | ND_LOG_FIELD_END(), |
| 311 | }; |
| 312 | ND_LOG_STACK_PUSH(lgs); |
| 313 | |
| 314 | if(msg->opcode & STREAM_OPCODE_RECEIVER_BUFFER_OVERFLOW) { |
| 315 | worker_is_busy(WORKER_SENDER_JOB_DISCONNECT_OVERFLOW); |
| 316 | errno_clear(); |
| 317 | spinlock_lock(&rpt->thread.send_to_child.spinlock); |
| 318 | // copy the statistics |
| 319 | STREAM_CIRCULAR_BUFFER_STATS stats = *stream_circular_buffer_stats_unsafe(rpt->thread.send_to_child.scb); |
| 320 | spinlock_unlock(&rpt->thread.send_to_child.spinlock); |
| 321 | nd_log(NDLS_DAEMON, NDLP_ERR, |
| 322 | "STREAM RCV[%zu] '%s' [from [%s]:%s]: send buffer is full (buffer size %u, max %u, used %u, available %u). " |
| 323 | "Restarting connection.", |
| 324 | sth->id, rrdhost_hostname(rpt->host), rpt->remote_ip, rpt->remote_port, |
| 325 | stats.bytes_size, stats.bytes_max_size, stats.bytes_outstanding, stats.bytes_available); |
| 326 | |
| 327 | stream_receiver_remove(sth, rpt, STREAM_HANDSHAKE_DISCONNECT_BUFFER_OVERFLOW); |
| 328 | return; |
| 329 | } |
| 330 | |
| 331 | nd_log(NDLS_DAEMON, NDLP_ERR, |
| 332 | "STREAM RCV[%zu]: invalid msg id %u", sth->id, (unsigned)msg->opcode); |
| 333 | } |
| 334 | |
| 335 | static ssize_t send_to_child(const char *txt, void *data, STREAM_TRAFFIC_TYPE type) { |
| 336 | struct receiver_state *rpt = data; |
| 337 | if(!rpt || rpt->thread.meta.type != POLLFD_TYPE_RECEIVER || !rpt->thread.send_to_child.scb) |
| 338 | return 0; |
| 339 | |
| 340 | spinlock_lock(&rpt->thread.send_to_child.spinlock); |
| 341 | STREAM_CIRCULAR_BUFFER *scb = rpt->thread.send_to_child.scb; |
| 342 | STREAM_CIRCULAR_BUFFER_STATS *stats = stream_circular_buffer_stats_unsafe(scb); |
| 343 | bool was_empty = stats->bytes_outstanding == 0; |
| 344 | struct stream_opcode msg = rpt->thread.send_to_child.msg; |
| 345 | msg.opcode = STREAM_OPCODE_NONE; |
| 346 | msg.reason = 0; |
| 347 | |
| 348 | size_t size = strlen(txt); |
| 349 | ssize_t rc = (ssize_t)size; |
| 350 | if(!stream_circular_buffer_add_unsafe(scb, txt, size, size, type, true)) { |
| 351 | // should never happen, because of autoscaling |
| 352 | msg.opcode = STREAM_OPCODE_RECEIVER_BUFFER_OVERFLOW; |
| 353 | msg.reason = STREAM_HANDSHAKE_DISCONNECT_BUFFER_OVERFLOW; |
| 354 | rc = -1; |
| 355 | } |
| 356 | else { |
| 357 | stream_receiver_log_payload(rpt, txt, type, false); |
| 358 | |
| 359 | if(was_empty) { |
| 360 | msg.opcode = STREAM_OPCODE_RECEIVER_POLLOUT; |
| 361 | msg.reason = 0; |
| 362 | } |
| 363 | } |
| 364 | |
| 365 | spinlock_unlock(&rpt->thread.send_to_child.spinlock); |
| 366 | |
| 367 | if(msg.opcode != STREAM_OPCODE_NONE) |
| 368 | stream_receiver_send_opcode(rpt, msg); |
| 369 | |
| 370 | return rc; |
| 371 | } |
| 372 | |
| 373 | // -------------------------------------------------------------------------------------------------------------------- |
| 374 | |
| 375 | void stream_receiver_move_to_running_unsafe(struct stream_thread *sth, struct receiver_state *rpt) { |
| 376 | internal_fatal(sth->tid != gettid_cached(), "Function %s() should only be used by the dispatcher thread", __FUNCTION__ ); |
| 377 | |
| 378 | worker_is_busy(WORKER_STREAM_JOB_DEQUEUE); |
| 379 | |
| 380 | ND_LOG_STACK lgs[] = { |
| 381 | ND_LOG_FIELD_STR(NDF_NIDL_NODE, rpt->host->hostname), |
| 382 | ND_LOG_FIELD_UUID(NDF_MESSAGE_ID, &streaming_from_child_msgid), |
| 383 | ND_LOG_FIELD_END(), |
| 384 | }; |
| 385 | ND_LOG_STACK_PUSH(lgs); |
| 386 | |
| 387 | nd_log(NDLS_DAEMON, NDLP_DEBUG, |
| 388 | "STREAM RCV[%zu] '%s' [from [%s]:%s]: moving host from receiver queue to receiver running...", |
| 389 | sth->id, rrdhost_hostname(rpt->host), rpt->remote_ip, rpt->remote_port); |
| 390 | |
| 391 | sock_setcloexec(rpt->sock.fd, true); |
| 392 | sock_enlarge_rcv_buf(rpt->sock.fd); |
| 393 | sock_enlarge_snd_buf(rpt->sock.fd); |
| 394 | sock_setcork(rpt->sock.fd, false); |
| 395 | if(sock_setnonblock(rpt->sock.fd, true) != 1) |
| 396 | nd_log(NDLS_DAEMON, NDLP_ERR, |
| 397 | "STREAM RCV '%s' [from [%s]:%s]: failed to set non-blocking mode on socket %d", |
| 398 | rrdhost_hostname(rpt->host), rpt->remote_ip, rpt->remote_port, rpt->sock.fd); |
| 399 | |
| 400 | __atomic_store_n(&rpt->host->stream.rcv.status.tid, gettid_cached(), __ATOMIC_RELAXED); |
| 401 | rpt->thread.meta.type = POLLFD_TYPE_RECEIVER; |
| 402 | rpt->thread.meta.rpt = rpt; |
| 403 | |
| 404 | spinlock_lock(&rpt->thread.send_to_child.spinlock); |
| 405 | rpt->thread.send_to_child.scb = stream_circular_buffer_create(); |
| 406 | rpt->thread.send_to_child.msg.thread_slot = (int32_t)sth->id; |
| 407 | rpt->thread.send_to_child.msg.session = os_random32(); |
| 408 | rpt->thread.send_to_child.msg.meta = &rpt->thread.meta; |
| 409 | spinlock_unlock(&rpt->thread.send_to_child.spinlock); |
| 410 | |
| 411 | internal_fatal(META_GET(&sth->run.meta, (Word_t)&rpt->thread.meta) != NULL, "Receiver to be added is already in the list of receivers"); |
| 412 | META_SET(&sth->run.meta, (Word_t)&rpt->thread.meta, &rpt->thread.meta); |
| 413 | |
| 414 | rpt->thread.wanted = ND_POLL_READ; |
| 415 | if(!nd_poll_add(sth->run.ndpl, rpt->sock.fd, rpt->thread.wanted, &rpt->thread.meta)) |
| 416 | nd_log(NDLS_DAEMON, NDLP_ERR, |
| 417 | "STREAM RCV[%zu] '%s' [from [%s]:%s]:" |
| 418 | "Failed to add receiver socket to nd_poll()", |
| 419 | sth->id, rrdhost_hostname(rpt->host), rpt->remote_ip, rpt->remote_port); |
| 420 | |
| 421 | rpt->thread.compressed.start = 0; |
| 422 | rpt->thread.compressed.used = 0; |
| 423 | rpt->thread.compressed.enabled = stream_decompression_initialize(rpt); |
| 424 | buffered_reader_init(&rpt->thread.uncompressed); |
| 425 | |
| 426 | rpt->thread.line_buffer = buffer_create(sizeof(rpt->thread.uncompressed.read_buffer), NULL); |
| 427 | |
| 428 | // help preferred_sender_buffer() select the right buffer |
| 429 | rpt->host->stream.snd.commit.receiver_tid = gettid_cached(); |
| 430 | |
| 431 | rpt->replication.last_progress_ut = now_monotonic_usec(); |
| 432 | |
| 433 | PARSER *parser = NULL; |
| 434 | { |
| 435 | char buf[CONFIG_MAX_NAME]; |
| 436 | snprintfz(buf, sizeof(buf), "[%s]:%s", rpt->remote_ip, rpt->remote_port); |
| 437 | string_freez(rpt->thread.cd.id); |
| 438 | rpt->thread.cd.id = string_strdupz(buf); |
| 439 | |
| 440 | string_freez(rpt->thread.cd.filename); |
| 441 | rpt->thread.cd.filename = NULL; |
| 442 | |
| 443 | string_freez(rpt->thread.cd.fullfilename); |
| 444 | rpt->thread.cd.fullfilename = NULL; |
| 445 | |
| 446 | string_freez(rpt->thread.cd.cmd); |
| 447 | rpt->thread.cd.cmd = NULL; |
| 448 | |
| 449 | rpt->thread.cd.update_every = (int)nd_profile.update_every; |
| 450 | spinlock_init(&rpt->thread.cd.unsafe.spinlock); |
| 451 | rpt->thread.cd.unsafe.running = true; |
| 452 | rpt->thread.cd.unsafe.enabled = true; |
| 453 | rpt->thread.cd.started_t = now_realtime_sec(); |
| 454 | |
| 455 | PARSER_USER_OBJECT user = { |
| 456 | .enabled = plugin_is_enabled(&rpt->thread.cd), |
| 457 | .host = rpt->host, |
| 458 | .opaque = rpt, |
| 459 | .cd = &rpt->thread.cd, |
| 460 | .trust_durations = 1, |
| 461 | .capabilities = rpt->capabilities, |
| 462 | #ifdef NETDATA_LOG_STREAM_RECEIVER |
| 463 | .rpt = rpt, |
| 464 | #endif |
| 465 | }; |
| 466 | |
| 467 | parser = parser_init(&user, -1, -1, PARSER_INPUT_SPLIT, &rpt->sock); |
| 468 | parser->send_to_plugin_data = rpt; |
| 469 | parser->send_to_plugin_cb = send_to_child; |
| 470 | |
| 471 | pluginsd_keywords_init(parser, PARSER_INIT_STREAMING); |
| 472 | |
| 473 | __atomic_store_n(&rpt->thread.parser, parser, __ATOMIC_RELAXED); |
| 474 | } |
| 475 | |
| 476 | if(stream_receive.replication.enabled) |
| 477 | pulse_host_status(rpt->host, PULSE_HOST_STATUS_RCV_REPLICATION_WAIT, 0); |
| 478 | else |
| 479 | pulse_host_status(rpt->host, PULSE_HOST_STATUS_RCV_RUNNING, 0); |
| 480 | |
| 481 | // keep this last - it needs everything ready since to sends data to the child |
| 482 | stream_receiver_send_node_and_claim_id_to_child(rpt->host); |
| 483 | } |
| 484 | |
| 485 | void stream_receiver_move_entire_queue_to_running_unsafe(struct stream_thread *sth) { |
| 486 | internal_fatal(sth->tid != gettid_cached(), "Function %s() should only be used by the dispatcher thread", __FUNCTION__ ); |
| 487 | |
| 488 | // process the queue |
| 489 | Word_t idx = 0; |
| 490 | for(struct receiver_state *rpt = RECEIVERS_FIRST(&sth->queue.receivers, &idx); |
| 491 | rpt; |
| 492 | rpt = RECEIVERS_NEXT(&sth->queue.receivers, &idx)) { |
| 493 | RECEIVERS_DEL(&sth->queue.receivers, idx); |
| 494 | stream_receiver_move_to_running_unsafe(sth, rpt); |
| 495 | } |
| 496 | } |
| 497 | |
| 498 | static void stream_receiver_remove_internal(struct stream_thread *sth, struct receiver_state *rpt, STREAM_HANDSHAKE reason) { |
| 499 | internal_fatal(sth->tid != gettid_cached(), "Function %s() should only be used by the dispatcher thread", __FUNCTION__ ); |
| 500 | |
| 501 | receiver_set_exit_reason(rpt, reason, false); |
| 502 | |
| 503 | ND_LOG_STACK lgs[] = { |
| 504 | ND_LOG_FIELD_STR(NDF_NIDL_NODE, rpt->host->hostname), |
| 505 | ND_LOG_FIELD_TXT(NDF_SRC_IP, rpt->remote_ip), |
| 506 | ND_LOG_FIELD_TXT(NDF_SRC_PORT, rpt->remote_port), |
| 507 | ND_LOG_FIELD_CB(NDF_SRC_TRANSPORT, stream_receiver_log_transport, rpt), |
| 508 | ND_LOG_FIELD_CB(NDF_SRC_CAPABILITIES, stream_receiver_log_capabilities, rpt), |
| 509 | ND_LOG_FIELD_UUID(NDF_MESSAGE_ID, &streaming_from_child_msgid), |
| 510 | ND_LOG_FIELD_END(), |
| 511 | }; |
| 512 | ND_LOG_STACK_PUSH(lgs); |
| 513 | |
| 514 | PARSER *parser = __atomic_load_n(&rpt->thread.parser, __ATOMIC_RELAXED); |
| 515 | size_t count = 0; |
| 516 | if(parser) |
| 517 | count = parser->user.data_collections_count; |
| 518 | |
| 519 | errno_clear(); |
| 520 | nd_log(NDLS_DAEMON, NDLP_ERR, |
| 521 | "STREAM RCV[%zu] '%s' [from [%s]:%s]: " |
| 522 | "receiver disconnected (after %zu received messages): %s" |
| 523 | , sth->id |
| 524 | , rpt->hostname ? rpt->hostname : "-" |
| 525 | , rpt->remote_ip ? rpt->remote_ip : "-" |
| 526 | , rpt->remote_port ? rpt->remote_port : "-" |
| 527 | , count |
| 528 | , stream_handshake_error_to_string(reason)); |
| 529 | |
| 530 | internal_fatal(META_GET(&sth->run.meta, (Word_t)&rpt->thread.meta) == NULL, |
| 531 | "Receiver to be removed is not found in the list of receivers"); |
| 532 | |
| 533 | META_DEL(&sth->run.meta, (Word_t)&rpt->thread.meta); |
| 534 | |
| 535 | rpt->thread.wanted = 0; |
| 536 | if(!nd_poll_del(sth->run.ndpl, rpt->sock.fd)) |
| 537 | nd_log(NDLS_DAEMON, NDLP_ERR, "Failed to delete receiver socket from nd_poll()"); |
| 538 | |
| 539 | __atomic_store_n(&rpt->host->stream.rcv.status.tid, 0, __ATOMIC_RELAXED); |
| 540 | |
| 541 | // make sure send_to_plugin() will not write any data to the socket (or wait for it to finish) |
| 542 | if(parser) { |
| 543 | spinlock_lock(&parser->writer.spinlock); |
| 544 | parser->fd_input = -1; |
| 545 | parser->fd_output = -1; |
| 546 | parser->sock = NULL; |
| 547 | spinlock_unlock(&parser->writer.spinlock); |
| 548 | |
| 549 | parser->user.v2.stream_buffer.wb = NULL; |
| 550 | } |
| 551 | |
| 552 | stream_thread_node_removed(rpt->host); |
| 553 | pulse_host_status(rpt->host, PULSE_HOST_STATUS_RCV_OFFLINE, reason); |
| 554 | |
| 555 | // set a default exit reason, if not set |
| 556 | receiver_set_exit_reason(rpt, reason, false); |
| 557 | |
| 558 | // in case we are connected to netdata cloud, |
| 559 | // we inform cloud that a child got disconnected |
| 560 | uint64_t total_reboot = rrdhost_stream_path_total_reboot_time_ms(rpt->host); |
| 561 | schedule_node_state_update(rpt->host, MIN((total_reboot * MAX_CHILD_DISC_TOLERANCE), MAX_CHILD_DISC_DELAY)); |
| 562 | |
| 563 | rrdhost_clear_receiver(rpt, reason); |
| 564 | rrdhost_set_is_parent_label(); |
| 565 | |
| 566 | stream_receiver_free(rpt); |
| 567 | // DO NOT USE rpt after this point |
| 568 | } |
| 569 | |
| 570 | static bool stream_receiver_dequeue_senders(struct stream_thread *sth, struct receiver_state *rpt, usec_t now_ut) { |
| 571 | internal_fatal(sth->tid != gettid_cached(), "Function %s() should only be used by the dispatcher thread", __FUNCTION__); |
| 572 | |
| 573 | // re-check if we need to send data after reading - if we do, try now |
| 574 | if(rpt->thread.wanted & ND_POLL_WRITE) { |
| 575 | worker_is_busy(WORKER_STREAM_JOB_SOCKET_SEND); |
| 576 | if(!stream_receiver_send_data(sth, rpt, now_ut, false)) |
| 577 | return false; |
| 578 | } |
| 579 | |
| 580 | if(rpt->host->sender && // the host has a sender |
| 581 | rpt->host->stream.snd.status.tid == gettid_cached() && // the sender is mine |
| 582 | (rpt->host->sender->thread.wanted & ND_POLL_WRITE)) { // the sender needs to send data |
| 583 | // we return true even if this fais, |
| 584 | // so that we will not disconnect the receiver because the sender failed |
| 585 | stream_sender_send_data(sth, rpt->host->sender, now_ut, false); |
| 586 | } |
| 587 | |
| 588 | return true; |
| 589 | } |
| 590 | |
| 591 | static ssize_t |
| 592 | stream_receive_and_process(struct stream_thread *sth, struct receiver_state *rpt, PARSER *parser, usec_t now_ut __maybe_unused, bool *removed) { |
| 593 | internal_fatal(sth->tid != gettid_cached(), "Function %s() should only be used by the dispatcher thread", __FUNCTION__); |
| 594 | *removed = false; |
| 595 | |
| 596 | ssize_t rc; |
| 597 | if(rpt->thread.compressed.enabled) { |
| 598 | rc = receiver_read_compressed(rpt); |
| 599 | if(unlikely(rc <= 0)) |
| 600 | return rc; |
| 601 | |
| 602 | while(!nd_thread_signaled_to_cancel() && service_running(SERVICE_STREAMING) && !receiver_should_stop(rpt)) { |
| 603 | worker_is_busy(WORKER_STREAM_JOB_DECOMPRESS); |
| 604 | |
| 605 | // feed the decompressor with the new data we just read |
| 606 | decompressor_status_t feed_rc = receiver_feed_decompressor(rpt); |
| 607 | |
| 608 | if(likely(feed_rc == DECOMPRESS_OK)) { |
| 609 | while (true) { |
| 610 | // feed our uncompressed data buffer with new data |
| 611 | decompressor_status_t decompress_rc = receiver_get_decompressed(rpt); |
| 612 | |
| 613 | if (likely(decompress_rc == DECOMPRESS_OK)) { |
| 614 | // loop through all the complete lines found in the uncompressed buffer |
| 615 | |
| 616 | while (buffered_reader_next_line(&rpt->thread.uncompressed, rpt->thread.line_buffer)) { |
| 617 | if (unlikely(parser_action(parser, rpt->thread.line_buffer->buffer))) { |
| 618 | stream_receiver_remove(sth, rpt, STREAM_HANDSHAKE_RCV_DISCONNECT_PARSER_FAILED); |
| 619 | *removed = true; |
| 620 | return -1; |
| 621 | } |
| 622 | |
| 623 | rpt->thread.line_buffer->len = 0; |
| 624 | rpt->thread.line_buffer->buffer[0] = '\0'; |
| 625 | } |
| 626 | } |
| 627 | else if (decompress_rc == DECOMPRESS_NEED_MORE_DATA) |
| 628 | break; |
| 629 | |
| 630 | else { |
| 631 | stream_receiver_remove(sth, rpt, STREAM_HANDSHAKE_RCV_DECOMPRESSION_FAILED); |
| 632 | *removed = true; |
| 633 | return -1; |
| 634 | } |
| 635 | } |
| 636 | } |
| 637 | else if (feed_rc == DECOMPRESS_NEED_MORE_DATA) |
| 638 | break; |
| 639 | else { |
| 640 | stream_receiver_remove(sth, rpt, STREAM_HANDSHAKE_RCV_DECOMPRESSION_FAILED); |
| 641 | *removed = true; |
| 642 | return -1; |
| 643 | } |
| 644 | } |
| 645 | |
| 646 | if(receiver_should_stop(rpt)) { |
| 647 | stream_receiver_remove(sth, rpt, STREAM_HANDSHAKE_DISCONNECT_SIGNALED_TO_STOP); |
| 648 | *removed = true; |
| 649 | return -1; |
| 650 | } |
| 651 | } |
| 652 | else { |
| 653 | rc = receiver_read_uncompressed(rpt); |
| 654 | if(rc <= 0) |
| 655 | return rc; |
| 656 | |
| 657 | while(buffered_reader_next_line(&rpt->thread.uncompressed, rpt->thread.line_buffer)) { |
| 658 | if(unlikely(parser_action(parser, rpt->thread.line_buffer->buffer))) { |
| 659 | stream_receiver_remove(sth, rpt, STREAM_HANDSHAKE_RCV_DISCONNECT_PARSER_FAILED); |
| 660 | *removed = true; |
| 661 | return -1; |
| 662 | } |
| 663 | |
| 664 | rpt->thread.line_buffer->len = 0; |
| 665 | rpt->thread.line_buffer->buffer[0] = '\0'; |
| 666 | } |
| 667 | } |
| 668 | |
| 669 | return rc; |
| 670 | } |
| 671 | |
| 672 | bool stream_receiver_send_data(struct stream_thread *sth, struct receiver_state *rpt, usec_t now_ut, bool process_opcodes_and_enable_removal) { |
| 673 | internal_fatal(sth->tid != gettid_cached(), "Function %s() should only be used by the dispatcher thread", __FUNCTION__ ); |
| 674 | |
| 675 | EVLOOP_STATUS status = EVLOOP_STATUS_CONTINUE; |
| 676 | while(status == EVLOOP_STATUS_CONTINUE) { |
| 677 | if (!spinlock_trylock(&rpt->thread.send_to_child.spinlock)) { |
| 678 | status = EVLOOP_STATUS_CANT_GET_LOCK; |
| 679 | break; |
| 680 | } |
| 681 | |
| 682 | char *chunk; |
| 683 | STREAM_CIRCULAR_BUFFER *scb = rpt->thread.send_to_child.scb; |
| 684 | STREAM_CIRCULAR_BUFFER_STATS *stats = stream_circular_buffer_stats_unsafe(scb); |
| 685 | size_t outstanding = stream_circular_buffer_get_unsafe(scb, &chunk); |
| 686 | |
| 687 | if(!outstanding) { |
| 688 | status = EVLOOP_STATUS_NO_MORE_DATA; |
| 689 | spinlock_unlock(&rpt->thread.send_to_child.spinlock); |
| 690 | continue; |
| 691 | } |
| 692 | |
| 693 | ssize_t rc = write_stream(rpt, chunk, outstanding); |
| 694 | if (likely(rc > 0)) { |
| 695 | pulse_stream_sent_bytes(rc); |
| 696 | rpt->thread.last_traffic_ut = now_ut; |
| 697 | stream_circular_buffer_del_unsafe(scb, rc, now_ut); |
| 698 | if (!stats->bytes_outstanding) { |
| 699 | rpt->thread.wanted = ND_POLL_READ; |
| 700 | if (!nd_poll_upd(sth->run.ndpl, rpt->sock.fd, rpt->thread.wanted)) |
| 701 | nd_log(NDLS_DAEMON, NDLP_ERR, |
| 702 | "STREAM RCV[%zu] '%s' [from [%s]:%s]: cannot update nd_poll()", |
| 703 | sth->id, rrdhost_hostname(rpt->host), rpt->remote_ip, rpt->remote_port); |
| 704 | |
| 705 | // recreate the circular buffer if we have to |
| 706 | stream_circular_buffer_recreate_timed_unsafe(rpt->thread.send_to_child.scb, now_ut, false); |
| 707 | status = EVLOOP_STATUS_NO_MORE_DATA; |
| 708 | } |
| 709 | } |
| 710 | else if (rc == 0 || errno == ECONNRESET) |
| 711 | status = EVLOOP_STATUS_SOCKET_CLOSED; |
| 712 | |
| 713 | else if (rc < 0) { |
| 714 | if (errno == EWOULDBLOCK || errno == EAGAIN || errno == EINTR) |
| 715 | status = EVLOOP_STATUS_SOCKET_FULL; |
| 716 | else |
| 717 | status = EVLOOP_STATUS_SOCKET_ERROR; |
| 718 | } |
| 719 | |
| 720 | spinlock_unlock(&rpt->thread.send_to_child.spinlock); |
| 721 | |
| 722 | if (status == EVLOOP_STATUS_SOCKET_ERROR || status == EVLOOP_STATUS_SOCKET_CLOSED) { |
| 723 | STREAM_HANDSHAKE reason; |
| 724 | |
| 725 | if(status == EVLOOP_STATUS_SOCKET_ERROR) { |
| 726 | worker_is_busy(WORKER_STREAM_JOB_DISCONNECT_SEND_ERROR); |
| 727 | reason = STREAM_HANDSHAKE_DISCONNECT_SOCKET_WRITE_FAILED; |
| 728 | } |
| 729 | else /* if(status == EVLOOP_STATUS_SOCKET_CLOSED) */ { |
| 730 | worker_is_busy(WORKER_STREAM_JOB_DISCONNECT_REMOTE_CLOSED); |
| 731 | reason = STREAM_HANDSHAKE_DISCONNECT_SOCKET_CLOSED_BY_REMOTE; |
| 732 | } |
| 733 | |
| 734 | nd_log(NDLS_DAEMON, NDLP_ERR, |
| 735 | "STREAM RCV[%zu] '%s' [from [%s]:%s]: %s (%zd, on fd %d) - closing receiver connection - " |
| 736 | "we have sent %zu bytes in %zu operations.", |
| 737 | sth->id, rrdhost_hostname(rpt->host), rpt->remote_ip, rpt->remote_port, |
| 738 | stream_handshake_error_to_string(reason), rc, rpt->sock.fd, stats->bytes_sent, stats->sends); |
| 739 | |
| 740 | if(process_opcodes_and_enable_removal) { |
| 741 | // this is not executed from the opcode handling mechanism |
| 742 | // so we can safely remove the receiver. |
| 743 | stream_receiver_remove(sth, rpt, reason); |
| 744 | } |
| 745 | else { |
| 746 | receiver_set_exit_reason(rpt, reason, false); |
| 747 | |
| 748 | // protection against this case: |
| 749 | // |
| 750 | // 1. receiver gets a replication request |
| 751 | // 2. parser processes the request |
| 752 | // 3. parser decides to send back a message to the child (REPLAY_CHART) |
| 753 | // 4. send_to_child appends the data to the sending circular buffer |
| 754 | // 5. send_to_child sends opcode to enable sending |
| 755 | // 6. opcode bypasses the signal and runs this function inline to dispatch immediately |
| 756 | // 7. sending fails (child disconnected) |
| 757 | // 8. receiver is removed |
| 758 | // |
| 759 | // Point 2 above crashes. The parser is no longer there (freed at point 7) |
| 760 | // and there is no way for point 2 to know... |
| 761 | } |
| 762 | } |
| 763 | else if(process_opcodes_and_enable_removal && |
| 764 | status == EVLOOP_STATUS_CONTINUE && |
| 765 | stream_thread_process_opcodes(sth, &rpt->thread.meta)) |
| 766 | status = EVLOOP_STATUS_OPCODE_ON_ME; |
| 767 | } |
| 768 | |
| 769 | return EVLOOP_STATUS_STILL_ALIVE(status); |
| 770 | } |
| 771 | |
| 772 | bool stream_receiver_receive_data(struct stream_thread *sth, struct receiver_state *rpt, usec_t now_ut, bool process_opcodes) { |
| 773 | internal_fatal(sth->tid != gettid_cached(), "Function %s() should only be used by the dispatcher thread", __FUNCTION__ ); |
| 774 | |
| 775 | PARSER *parser = __atomic_load_n(&rpt->thread.parser, __ATOMIC_RELAXED); |
| 776 | ND_LOG_STACK lgs[] = { |
| 777 | ND_LOG_FIELD_CB(NDF_REQUEST, line_splitter_reconstruct_line, &parser->line), |
| 778 | ND_LOG_FIELD_CB(NDF_NIDL_NODE, parser_reconstruct_node, parser), |
| 779 | ND_LOG_FIELD_CB(NDF_NIDL_INSTANCE, parser_reconstruct_instance, parser), |
| 780 | ND_LOG_FIELD_CB(NDF_NIDL_CONTEXT, parser_reconstruct_context, parser), |
| 781 | ND_LOG_FIELD_END(), |
| 782 | }; |
| 783 | ND_LOG_STACK_PUSH(lgs); |
| 784 | |
| 785 | size_t count = 1; // how many reads to do per host, before moving to the next host |
| 786 | EVLOOP_STATUS status = EVLOOP_STATUS_CONTINUE; |
| 787 | while(status == EVLOOP_STATUS_CONTINUE && count-- > 0) { |
| 788 | bool removed = false; |
| 789 | ssize_t rc = stream_receive_and_process(sth, rpt, parser, now_ut, &removed); |
| 790 | if(unlikely(removed)) |
| 791 | status = EVLOOP_STATUS_PARSER_FAILED; |
| 792 | |
| 793 | else if (likely(rc > 0)) { |
| 794 | rpt->thread.last_traffic_ut = now_ut; |
| 795 | |
| 796 | if(!stream_receiver_dequeue_senders(sth, rpt, now_ut)) |
| 797 | status = EVLOOP_STATUS_SOCKET_ERROR; |
| 798 | } |
| 799 | else if (rc == 0 || errno == ECONNRESET) { |
| 800 | status = EVLOOP_STATUS_SOCKET_CLOSED; |
| 801 | } |
| 802 | else if (rc < 0) { |
| 803 | if ((errno == EWOULDBLOCK || errno == EAGAIN || errno == EINTR)) |
| 804 | status = EVLOOP_STATUS_SOCKET_FULL; |
| 805 | else |
| 806 | status = EVLOOP_STATUS_SOCKET_ERROR; |
| 807 | } |
| 808 | |
| 809 | if(status == EVLOOP_STATUS_SOCKET_ERROR || status == EVLOOP_STATUS_SOCKET_CLOSED) { |
| 810 | STREAM_HANDSHAKE reason; |
| 811 | |
| 812 | if(status == EVLOOP_STATUS_SOCKET_ERROR) { |
| 813 | worker_is_busy(WORKER_STREAM_JOB_DISCONNECT_RECEIVE_ERROR); |
| 814 | reason = STREAM_HANDSHAKE_DISCONNECT_SOCKET_READ_FAILED; |
| 815 | } |
| 816 | else /* if(status == EVLOOP_STATUS_SOCKET_CLOSED) */ { |
| 817 | worker_is_busy(WORKER_STREAM_JOB_DISCONNECT_REMOTE_CLOSED); |
| 818 | reason = STREAM_HANDSHAKE_DISCONNECT_SOCKET_CLOSED_BY_REMOTE; |
| 819 | } |
| 820 | |
| 821 | nd_log(NDLS_DAEMON, NDLP_ERR, |
| 822 | "STREAM RCV[%zu] '%s' [from [%s]:%s]: %s (fd %d) - closing receiver connection.", |
| 823 | sth->id, rrdhost_hostname(rpt->host), rpt->remote_ip, rpt->remote_port, |
| 824 | stream_handshake_error_to_string(reason), rpt->sock.fd); |
| 825 | |
| 826 | stream_receiver_remove(sth, rpt, reason); |
| 827 | break; |
| 828 | } |
| 829 | else if(status == EVLOOP_STATUS_CONTINUE && process_opcodes && stream_thread_process_opcodes(sth, &rpt->thread.meta)) |
| 830 | status = EVLOOP_STATUS_OPCODE_ON_ME; |
| 831 | } |
| 832 | |
| 833 | return EVLOOP_STATUS_STILL_ALIVE(status); |
| 834 | } |
| 835 | |
| 836 | // process poll() events for streaming receivers |
| 837 | // returns true when the receiver is still there, false if it removed it |
| 838 | bool stream_receive_process_poll_events(struct stream_thread *sth, struct receiver_state *rpt, nd_poll_event_t events, usec_t now_ut) { |
| 839 | internal_fatal(sth->tid != gettid_cached(), "Function %s() should only be used by the dispatcher thread", __FUNCTION__); |
| 840 | |
| 841 | ND_LOG_STACK lgs[] = { |
| 842 | ND_LOG_FIELD_TXT(NDF_SRC_IP, rpt->remote_ip), |
| 843 | ND_LOG_FIELD_TXT(NDF_SRC_PORT, rpt->remote_port), |
| 844 | ND_LOG_FIELD_TXT(NDF_NIDL_NODE, rpt->hostname), |
| 845 | ND_LOG_FIELD_CB(NDF_SRC_TRANSPORT, stream_receiver_log_transport, rpt), |
| 846 | ND_LOG_FIELD_CB(NDF_SRC_CAPABILITIES, stream_receiver_log_capabilities, rpt), |
| 847 | ND_LOG_FIELD_END(), |
| 848 | }; |
| 849 | ND_LOG_STACK_PUSH(lgs); |
| 850 | |
| 851 | if (receiver_should_stop(rpt)) { |
| 852 | stream_receiver_remove(sth, rpt, STREAM_HANDSHAKE_DISCONNECT_SIGNALED_TO_STOP); |
| 853 | return false; |
| 854 | } |
| 855 | |
| 856 | if (unlikely(events & (ND_POLL_ERROR | ND_POLL_HUP | ND_POLL_INVALID))) { |
| 857 | // we have errors on this socket |
| 858 | |
| 859 | worker_is_busy(WORKER_STREAM_JOB_DISCONNECT_SOCKET_ERROR); |
| 860 | |
| 861 | STREAM_HANDSHAKE reason = events & ND_POLL_HUP ? STREAM_HANDSHAKE_DISCONNECT_SOCKET_CLOSED_BY_REMOTE : STREAM_HANDSHAKE_DISCONNECT_SOCKET_ERROR; |
| 862 | |
| 863 | nd_log(NDLS_DAEMON, NDLP_ERR, |
| 864 | "STREAM RCV[%zu] '%s' [from [%s]:%s]: %s - closing connection", |
| 865 | sth->id, rrdhost_hostname(rpt->host), rpt->remote_ip, rpt->remote_port, |
| 866 | stream_handshake_error_to_string(reason)); |
| 867 | |
| 868 | stream_receiver_remove(sth, rpt, reason); |
| 869 | return false; |
| 870 | } |
| 871 | |
| 872 | if (events & ND_POLL_WRITE) { |
| 873 | worker_is_busy(WORKER_STREAM_JOB_SOCKET_SEND); |
| 874 | if(!stream_receiver_send_data(sth, rpt, now_ut, true)) |
| 875 | return false; |
| 876 | } |
| 877 | |
| 878 | if (events & ND_POLL_READ) { |
| 879 | worker_is_busy(WORKER_STREAM_JOB_SOCKET_RECEIVE); |
| 880 | if(!stream_receiver_receive_data(sth, rpt, now_ut, true)) |
| 881 | return false; |
| 882 | } |
| 883 | |
| 884 | return true; |
| 885 | } |
| 886 | |
| 887 | void stream_receiver_check_all_nodes_from_poll(struct stream_thread *sth, usec_t now_ut) { |
| 888 | internal_fatal(sth->tid != gettid_cached(), "Function %s() should only be used by the dispatcher thread", __FUNCTION__ ); |
| 889 | |
| 890 | NETDATA_DOUBLE overall_buffer_ratio = 0.0; |
| 891 | |
| 892 | Word_t idx = 0; |
| 893 | for(struct pollfd_meta *m = META_FIRST(&sth->run.meta, &idx); |
| 894 | m; |
| 895 | m = META_NEXT(&sth->run.meta, &idx)) { |
| 896 | if (m->type != POLLFD_TYPE_RECEIVER) continue; |
| 897 | struct receiver_state *rpt = m->rpt; |
| 898 | |
| 899 | // Probe socket to detect dead connections (e.g., from TCP keepalive) |
| 900 | // Uses nd_sock_peek_nowait() which handles both SSL and plain TCP: |
| 901 | // - For SSL: uses SSL_peek() to avoid corrupting SSL state |
| 902 | // - For plain TCP: uses recv(MSG_PEEK | MSG_DONTWAIT) |
| 903 | char probe_byte; |
| 904 | ssize_t probe_rc = nd_sock_peek_nowait(&rpt->sock, &probe_byte, 1); |
| 905 | if (probe_rc == 0 || (probe_rc < 0 && errno == ECONNRESET)) { |
| 906 | // Connection closed by remote (gracefully or via reset) |
| 907 | ND_LOG_STACK lgs[] = { |
| 908 | ND_LOG_FIELD_TXT(NDF_SRC_IP, rpt->remote_ip), |
| 909 | ND_LOG_FIELD_TXT(NDF_SRC_PORT, rpt->remote_port), |
| 910 | ND_LOG_FIELD_TXT(NDF_NIDL_NODE, rpt->hostname), |
| 911 | ND_LOG_FIELD_CB(NDF_SRC_TRANSPORT, stream_receiver_log_transport, rpt), |
| 912 | ND_LOG_FIELD_CB(NDF_SRC_CAPABILITIES, stream_receiver_log_capabilities, rpt), |
| 913 | ND_LOG_FIELD_END(), |
| 914 | }; |
| 915 | ND_LOG_STACK_PUSH(lgs); |
| 916 | |
| 917 | worker_is_busy(WORKER_STREAM_JOB_DISCONNECT_REMOTE_CLOSED); |
| 918 | nd_log(NDLS_DAEMON, NDLP_ERR, |
| 919 | "STREAM RCV[%zu] '%s' [from %s]: socket closed by remote - closing connection", |
| 920 | sth->id, rrdhost_hostname(rpt->host), rpt->remote_ip); |
| 921 | |
| 922 | stream_receiver_remove(sth, rpt, STREAM_HANDSHAKE_DISCONNECT_SOCKET_CLOSED_BY_REMOTE); |
| 923 | continue; |
| 924 | } |
| 925 | if (probe_rc < 0 && errno != EAGAIN && errno != EWOULDBLOCK) { |
| 926 | // Socket error detected (keepalive timeout, etc.) |
| 927 | // Save errno immediately as subsequent calls may modify it |
| 928 | int saved_errno = errno; |
| 929 | |
| 930 | ND_LOG_STACK lgs[] = { |
| 931 | ND_LOG_FIELD_TXT(NDF_SRC_IP, rpt->remote_ip), |
| 932 | ND_LOG_FIELD_TXT(NDF_SRC_PORT, rpt->remote_port), |
| 933 | ND_LOG_FIELD_TXT(NDF_NIDL_NODE, rpt->hostname), |
| 934 | ND_LOG_FIELD_CB(NDF_SRC_TRANSPORT, stream_receiver_log_transport, rpt), |
| 935 | ND_LOG_FIELD_CB(NDF_SRC_CAPABILITIES, stream_receiver_log_capabilities, rpt), |
| 936 | ND_LOG_FIELD_END(), |
| 937 | }; |
| 938 | ND_LOG_STACK_PUSH(lgs); |
| 939 | |
| 940 | worker_is_busy(WORKER_STREAM_JOB_DISCONNECT_SOCKET_ERROR); |
| 941 | nd_log(NDLS_DAEMON, NDLP_ERR, |
| 942 | "STREAM RCV[%zu] '%s' [from %s]: socket error detected: %s - closing connection", |
| 943 | sth->id, rrdhost_hostname(rpt->host), rpt->remote_ip, strerror(saved_errno)); |
| 944 | |
| 945 | stream_receiver_remove(sth, rpt, STREAM_HANDSHAKE_DISCONNECT_SOCKET_ERROR); |
| 946 | continue; |
| 947 | } |
| 948 | // probe_rc > 0: data available (normal) |
| 949 | // probe_rc < 0 with EAGAIN/EWOULDBLOCK: no data but connection alive |
| 950 | |
| 951 | spinlock_lock(&rpt->thread.send_to_child.spinlock); |
| 952 | STREAM_CIRCULAR_BUFFER_STATS stats = *stream_circular_buffer_stats_unsafe(rpt->thread.send_to_child.scb); |
| 953 | spinlock_unlock(&rpt->thread.send_to_child.spinlock); |
| 954 | |
| 955 | if (stats.buffer_ratio > overall_buffer_ratio) |
| 956 | overall_buffer_ratio = stats.buffer_ratio; |
| 957 | |
| 958 | time_t timeout_s = 600; |
| 959 | if(unlikely(rpt->thread.last_traffic_ut + timeout_s * USEC_PER_SEC < now_ut && |
| 960 | !rrdhost_receiver_replicating_charts(rpt->host))) { |
| 961 | |
| 962 | ND_LOG_STACK lgs[] = { |
| 963 | ND_LOG_FIELD_TXT(NDF_SRC_IP, rpt->remote_ip), |
| 964 | ND_LOG_FIELD_TXT(NDF_SRC_PORT, rpt->remote_port), |
| 965 | ND_LOG_FIELD_TXT(NDF_NIDL_NODE, rpt->hostname), |
| 966 | ND_LOG_FIELD_CB(NDF_SRC_TRANSPORT, stream_receiver_log_transport, rpt), |
| 967 | ND_LOG_FIELD_CB(NDF_SRC_CAPABILITIES, stream_receiver_log_capabilities, rpt), |
| 968 | ND_LOG_FIELD_END(), |
| 969 | }; |
| 970 | ND_LOG_STACK_PUSH(lgs); |
| 971 | |
| 972 | worker_is_busy(WORKER_STREAM_JOB_DISCONNECT_TIMEOUT); |
| 973 | |
| 974 | char duration[RFC3339_MAX_LENGTH]; |
| 975 | duration_snprintf(duration, sizeof(duration), (int64_t)(now_monotonic_usec() - rpt->thread.last_traffic_ut), "us", true); |
| 976 | |
| 977 | char pending[64] = "0"; |
| 978 | if(stats.bytes_outstanding) |
| 979 | size_snprintf(pending, sizeof(pending), stats.bytes_outstanding, "B", false); |
| 980 | |
| 981 | nd_log(NDLS_DAEMON, NDLP_ERR, |
| 982 | "STREAM RCV[%zu] '%s' [from %s]: there was not traffic for %ld seconds - closing connection - " |
| 983 | "we have sent %zu bytes in %zu operations, it is idle for %s, and we have %s pending to send " |
| 984 | "(buffer is used %.2f%%).", |
| 985 | sth->id, rrdhost_hostname(rpt->host), rpt->remote_ip, timeout_s, |
| 986 | stats.bytes_sent, stats.sends, duration, pending, stats.buffer_ratio); |
| 987 | |
| 988 | stream_receiver_remove(sth, rpt, STREAM_HANDSHAKE_DISCONNECT_TIMEOUT); |
| 989 | continue; |
| 990 | } |
| 991 | |
| 992 | nd_poll_event_t wanted = ND_POLL_READ | (stats.bytes_outstanding ? ND_POLL_WRITE : 0); |
| 993 | if(unlikely(rpt->thread.wanted != wanted)) { |
| 994 | // nd_log(NDLS_DAEMON, NDLP_DEBUG, |
| 995 | // "STREAM RCV[%zu] '%s' [from %s]: nd_poll() wanted events mismatch.", |
| 996 | // sth->id, rrdhost_hostname(rpt->host), rpt->remote_ip); |
| 997 | |
| 998 | rpt->thread.wanted = wanted; |
| 999 | if(!nd_poll_upd(sth->run.ndpl, rpt->sock.fd, rpt->thread.wanted)) |
| 1000 | nd_log(NDLS_DAEMON, NDLP_ERR, |
| 1001 | "STREAM RCV[%zu] '%s' [from %s]: failed to update nd_poll().", |
| 1002 | sth->id, rrdhost_hostname(rpt->host), rpt->remote_ip); |
| 1003 | } |
| 1004 | } |
| 1005 | } |
| 1006 | |
| 1007 | static bool stream_receiver_did_replication_progress(struct receiver_state *rpt) { |
| 1008 | RRDHOST *host = rpt->host; |
| 1009 | |
| 1010 | size_t host_counter_sum = |
| 1011 | __atomic_load_n(&host->stream.rcv.status.replication.counter_in, __ATOMIC_RELAXED) + |
| 1012 | __atomic_load_n(&host->stream.rcv.status.replication.counter_out, __ATOMIC_RELAXED); |
| 1013 | |
| 1014 | if(rpt->replication.last_counter_sum != host_counter_sum) { |
| 1015 | // there has been some progress |
| 1016 | rpt->replication.last_counter_sum = host_counter_sum; |
| 1017 | rpt->replication.last_progress_ut = now_monotonic_usec(); |
| 1018 | return true; |
| 1019 | } |
| 1020 | |
| 1021 | if(!host_counter_sum) |
| 1022 | // we have not started yet |
| 1023 | return true; |
| 1024 | |
| 1025 | if(__atomic_load_n(&host->stream.rcv.status.replication.backfill_pending, __ATOMIC_RELAXED)) |
| 1026 | // we still have requests to execute |
| 1027 | return true; |
| 1028 | |
| 1029 | return (now_monotonic_usec() - rpt->replication.last_progress_ut < 10ULL * 60 * USEC_PER_SEC); |
| 1030 | } |
| 1031 | |
| 1032 | void stream_receiver_replication_check_from_poll(struct stream_thread *sth, usec_t now_ut __maybe_unused) { |
| 1033 | internal_fatal(sth->tid != gettid_cached(), "Function %s() should only be used by the dispatcher thread", __FUNCTION__); |
| 1034 | |
| 1035 | Word_t idx = 0; |
| 1036 | for(struct pollfd_meta *m = META_FIRST(&sth->run.meta, &idx); |
| 1037 | m; |
| 1038 | m = META_NEXT(&sth->run.meta, &idx)) { |
| 1039 | if (m->type != POLLFD_TYPE_RECEIVER) continue; |
| 1040 | struct receiver_state *rpt = m->rpt; |
| 1041 | RRDHOST *host = rpt->host; |
| 1042 | |
| 1043 | |
| 1044 | if(stream_receiver_did_replication_progress(rpt)) { |
| 1045 | rpt->replication.last_checked_ut = 0; |
| 1046 | continue; |
| 1047 | } |
| 1048 | |
| 1049 | if(rpt->replication.last_checked_ut == rpt->replication.last_progress_ut) |
| 1050 | continue; |
| 1051 | |
| 1052 | size_t stalled = 0, finished = 0; |
| 1053 | RRDSET *st; |
| 1054 | rrdset_foreach_read(st, rpt->host) { |
| 1055 | RRDSET_FLAGS st_flags = rrdset_flag_get(st); |
| 1056 | if(st_flags & RRDSET_FLAG_OBSOLETE) |
| 1057 | continue; |
| 1058 | |
| 1059 | if(st_flags & RRDSET_FLAG_RECEIVER_REPLICATION_FINISHED) { |
| 1060 | finished++; |
| 1061 | continue; |
| 1062 | } |
| 1063 | |
| 1064 | nd_log(NDLS_DAEMON, NDLP_DEBUG, |
| 1065 | "STREAM RCV[%zu] '%s' [from %s]: REPLICATION EXCEPTIONS: instance '%s' %s replication yet.", |
| 1066 | sth->id, rrdhost_hostname(host), rpt->remote_ip, |
| 1067 | rrdset_id(st), |
| 1068 | (st_flags & RRDSET_FLAG_RECEIVER_REPLICATION_IN_PROGRESS) ? "has not finished" : "has not started"); |
| 1069 | |
| 1070 | stalled++; |
| 1071 | } |
| 1072 | rrdset_foreach_done(st); |
| 1073 | |
| 1074 | if(stalled && !stream_receiver_did_replication_progress(rpt)) { |
| 1075 | nd_log(NDLS_DAEMON, NDLP_WARNING, |
| 1076 | "STREAM RCV[%zu] '%s' [from %s]: REPLICATION EXCEPTIONS SUMMARY: node has %zu stalled replication requests (%zu finished). " |
| 1077 | "We have requested %u and got replies for %u replication commands. " |
| 1078 | "Disconnecting node to restore streaming.", |
| 1079 | sth->id, rrdhost_hostname(rpt->host), rpt->remote_ip, |
| 1080 | stalled, finished, |
| 1081 | __atomic_load_n(&host->stream.rcv.status.replication.counter_out, __ATOMIC_RELAXED), |
| 1082 | __atomic_load_n(&host->stream.rcv.status.replication.counter_in, __ATOMIC_RELAXED)); |
| 1083 | |
| 1084 | stream_receiver_remove(sth, rpt, STREAM_HANDSHAKE_DISCONNECT_REPLICATION_STALLED); |
| 1085 | continue; |
| 1086 | } |
| 1087 | |
| 1088 | rpt->replication.last_checked_ut = rpt->replication.last_progress_ut; |
| 1089 | } |
| 1090 | } |
| 1091 | |
| 1092 | void stream_receiver_cleanup(struct stream_thread *sth) { |
| 1093 | Word_t idx = 0; |
| 1094 | for(struct pollfd_meta *m = META_FIRST(&sth->run.meta, &idx); |
| 1095 | m; |
| 1096 | m = META_NEXT(&sth->run.meta, &idx)) { |
| 1097 | if (m->type != POLLFD_TYPE_RECEIVER) continue; |
| 1098 | struct receiver_state *rpt = m->rpt; |
| 1099 | receiver_set_exit_reason(rpt, STREAM_HANDSHAKE_DISCONNECT_SHUTDOWN, true); |
| 1100 | stream_receiver_remove(sth, rpt, STREAM_HANDSHAKE_DISCONNECT_SHUTDOWN); |
| 1101 | } |
| 1102 | } |
| 1103 | |
| 1104 | static void stream_receiver_replication_reset(RRDHOST *host) { |
| 1105 | RRDSET *st; |
| 1106 | rrdset_foreach_read(st, host) { |
| 1107 | RRDSET_FLAGS old = rrdset_flag_set_and_clear(st, RRDSET_FLAG_RECEIVER_REPLICATION_FINISHED, RRDSET_FLAG_RECEIVER_REPLICATION_IN_PROGRESS); |
| 1108 | if(!(old & RRDSET_FLAG_RECEIVER_REPLICATION_FINISHED)) |
| 1109 | rrdhost_receiver_replicating_charts_minus_one(host); |
| 1110 | |
| 1111 | #ifdef REPLICATION_TRACKING |
| 1112 | st->stream.rcv.who = REPLAY_WHO_UNKNOWN; |
| 1113 | #endif |
| 1114 | } |
| 1115 | rrdset_foreach_done(st); |
| 1116 | |
| 1117 | if(rrdhost_receiver_replicating_charts(host) != 0) { |
| 1118 | nd_log(NDLS_DAEMON, NDLP_WARNING, |
| 1119 | "STREAM REPLAY ERROR: receiver replication instances counter should be zero, but it is %u" |
| 1120 | " - resetting it to zero", |
| 1121 | rrdhost_receiver_replicating_charts(host)); |
| 1122 | |
| 1123 | rrdhost_receiver_replicating_charts_zero(host); |
| 1124 | } |
| 1125 | |
| 1126 | __atomic_store_n(&host->stream.rcv.status.replication.counter_in, 0, __ATOMIC_RELAXED); |
| 1127 | __atomic_store_n(&host->stream.rcv.status.replication.counter_out, 0, __ATOMIC_RELAXED); |
| 1128 | __atomic_store_n(&host->stream.rcv.status.replication.backfill_pending, 0, __ATOMIC_RELAXED); |
| 1129 | } |
| 1130 | |
| 1131 | RRDHOST_SET_RECEIVER_RESULT rrdhost_set_receiver(RRDHOST *host, struct receiver_state *rpt) { |
| 1132 | bool signal_rrdcontext = false; |
| 1133 | bool set_this = false; |
| 1134 | |
| 1135 | rrdhost_receiver_lock(host); |
| 1136 | |
| 1137 | // If the obsolete-all cleanup is running on this host, refuse the attach. |
| 1138 | // The cleanup walks all charts marking them obsolete without holding |
| 1139 | // receiver_lock; attaching mid-pass would let it mark the new receiver's |
| 1140 | // charts obsolete and call ml_host_disconnected() on a connected host. |
| 1141 | // The child reconnects via normal backoff; by then the pass is done. |
| 1142 | if (rrdhost_flag_check(host, RRDHOST_FLAG_OBSOLETE_ALL_IN_PROGRESS)) { |
| 1143 | rrdhost_receiver_unlock(host); |
| 1144 | return RRDHOST_SET_RECEIVER_CLEANUP_BUSY; |
| 1145 | } |
| 1146 | |
| 1147 | if (!host->receiver) { |
| 1148 | object_state_activate_if_not_activated(&host->state_id); |
| 1149 | |
| 1150 | rrdhost_flag_clear(host, RRDHOST_FLAG_ORPHAN); |
| 1151 | rrdhost_set_health_evloop_iteration(host); |
| 1152 | |
| 1153 | host->stream.rcv.status.connections++; |
| 1154 | streaming_receiver_connected(); |
| 1155 | |
| 1156 | host->receiver = rpt; |
| 1157 | rpt->host = host; |
| 1158 | |
| 1159 | host->stream.rcv.status.reason = (STREAM_HANDSHAKE)rpt->capabilities; |
| 1160 | rpt->exit.reason = 0; |
| 1161 | __atomic_store_n(&rpt->exit.shutdown, false, __ATOMIC_RELEASE); |
| 1162 | host->stream.rcv.status.last_connected = now_realtime_sec(); |
| 1163 | host->stream.rcv.status.last_disconnected = 0; |
| 1164 | |
| 1165 | if (rpt->config.health.enabled != CONFIG_BOOLEAN_NO) { |
| 1166 | if (rpt->config.health.delay > 0) { |
| 1167 | host->health.delay_up_to = now_realtime_sec() + rpt->config.health.delay; |
| 1168 | nd_log(NDLS_DAEMON, NDLP_DEBUG, |
| 1169 | "STREAM RCV '%s' [from [%s]:%s]: " |
| 1170 | "Postponing health checks for %" PRId64 " seconds, because it was just connected.", |
| 1171 | rrdhost_hostname(host), rpt->remote_ip, rpt->remote_port, |
| 1172 | (int64_t) rpt->config.health.delay); |
| 1173 | } |
| 1174 | } |
| 1175 | |
| 1176 | host->health_log.health_log_retention_s = rpt->config.health.history; |
| 1177 | |
| 1178 | // this is a test |
| 1179 | // if(rpt->hops <= host->sender->hops) |
| 1180 | // stream_sender_thread_stop(host, "HOPS MISMATCH", false); |
| 1181 | |
| 1182 | signal_rrdcontext = true; |
| 1183 | stream_receiver_replication_reset(host); |
| 1184 | |
| 1185 | rrdhost_flag_set(rpt->host, RRDHOST_FLAG_COLLECTOR_ONLINE); |
| 1186 | aclk_queue_node_info(rpt->host, true); |
| 1187 | |
| 1188 | stream_parents_host_reset(host, STREAM_HANDSHAKE_SP_PREPARING); |
| 1189 | |
| 1190 | set_this = true; |
| 1191 | } |
| 1192 | |
| 1193 | rrdhost_receiver_unlock(host); |
| 1194 | |
| 1195 | if(signal_rrdcontext) |
| 1196 | rrdcontext_host_child_connected(host); |
| 1197 | |
| 1198 | if(set_this) |
| 1199 | ml_host_start(host); |
| 1200 | |
| 1201 | return set_this ? RRDHOST_SET_RECEIVER_OK : RRDHOST_SET_RECEIVER_ALREADY_ATTACHED; |
| 1202 | } |
| 1203 | |
| 1204 | void rrdhost_clear_receiver(struct receiver_state *rpt, STREAM_HANDSHAKE reason) { |
| 1205 | RRDHOST *host = rpt->host; |
| 1206 | if(!host) return; |
| 1207 | |
| 1208 | rrdhost_receiver_lock(host); |
| 1209 | { |
| 1210 | // Make sure that we detach this thread and don't kill a freshly arriving receiver |
| 1211 | |
| 1212 | if (host->receiver == rpt) { |
| 1213 | rrdhost_flag_clear(host, RRDHOST_FLAG_COLLECTOR_ONLINE); |
| 1214 | |
| 1215 | rrdhost_receiver_unlock(host); |
| 1216 | { |
| 1217 | // this will wait until all workers finish |
| 1218 | object_state_deactivate(&host->state_id); |
| 1219 | |
| 1220 | // run all these without having the receiver lock |
| 1221 | |
| 1222 | rrdhost_set_health_evloop_iteration(host); |
| 1223 | ml_host_stop(host); |
| 1224 | stream_path_child_disconnected(host); |
| 1225 | stream_sender_signal_to_stop_and_wait(host, reason, false); |
| 1226 | rrdcontext_host_child_disconnected(host); |
| 1227 | |
| 1228 | if (rpt->config.health.enabled) |
| 1229 | rrdcalc_child_disconnected(host); |
| 1230 | |
| 1231 | stream_parents_host_reset(host, reason); |
| 1232 | } |
| 1233 | rrdhost_receiver_lock(host); |
| 1234 | |
| 1235 | // now we have the lock again |
| 1236 | |
| 1237 | stream_receiver_replication_reset(host); |
| 1238 | streaming_receiver_disconnected(); |
| 1239 | |
| 1240 | host->stream.rcv.status.reason = rpt->exit.reason; |
| 1241 | rpt->exit.reason = 0; |
| 1242 | __atomic_store_n(&rpt->exit.shutdown, false, __ATOMIC_RELEASE); |
| 1243 | host->stream.rcv.status.last_connected = 0; |
| 1244 | host->stream.rcv.status.last_disconnected = now_realtime_sec(); |
| 1245 | host->health.enabled = false; |
| 1246 | |
| 1247 | rrdhost_flag_set(host, RRDHOST_FLAG_ORPHAN); |
| 1248 | host->receiver = NULL; |
| 1249 | } |
| 1250 | } |
| 1251 | |
| 1252 | // this must be cleared with the receiver lock |
| 1253 | pluginsd_process_cleanup(rpt->thread.parser); |
| 1254 | __atomic_store_n(&rpt->thread.parser, NULL, __ATOMIC_RELAXED); |
| 1255 | |
| 1256 | rrdhost_receiver_unlock(host); |
| 1257 | } |
| 1258 | |
| 1259 | bool stream_receiver_signal_to_stop_and_wait(RRDHOST *host, STREAM_HANDSHAKE reason) { |
| 1260 | bool ret = false; |
| 1261 | |
| 1262 | rrdhost_receiver_lock(host); |
| 1263 | |
| 1264 | struct receiver_state *rpt = host->receiver; |
| 1265 | |
| 1266 | if(rpt) { |
| 1267 | if(!__atomic_load_n(&rpt->exit.shutdown, __ATOMIC_ACQUIRE)) { |
| 1268 | receiver_set_exit_reason(rpt, reason, true); |
| 1269 | __atomic_store_n(&rpt->exit.shutdown, true, __ATOMIC_RELEASE); |
| 1270 | shutdown(rpt->sock.fd, SHUT_RDWR); |
| 1271 | } |
| 1272 | |
| 1273 | int count = 2000; |
| 1274 | while (host->receiver == rpt && count-- > 0) { |
| 1275 | rrdhost_receiver_unlock(host); |
| 1276 | |
| 1277 | // let the lock for the receiver thread to exit |
| 1278 | sleep_usec(1 * USEC_PER_MS); |
| 1279 | |
| 1280 | rrdhost_receiver_lock(host); |
| 1281 | } |
| 1282 | |
| 1283 | if(host->receiver == rpt) |
| 1284 | netdata_log_error("STREAM RCV[x] '%s' [from [%s]:%s]: " |
| 1285 | "streaming thread takes too long to stop, giving up..." |
| 1286 | , rrdhost_hostname(host) |
| 1287 | , rpt->remote_ip, rpt->remote_port); |
| 1288 | else |
| 1289 | ret = true; |
| 1290 | } |
| 1291 | else |
| 1292 | ret = true; |
| 1293 | |
| 1294 | rrdhost_receiver_unlock(host); |
| 1295 | |
| 1296 | return ret; |
| 1297 | } |