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-rw-r--r--streaming/rrdpush.c1098
1 files changed, 179 insertions, 919 deletions
diff --git a/streaming/rrdpush.c b/streaming/rrdpush.c
index e6d2aca0a..f54fc609e 100644
--- a/streaming/rrdpush.c
+++ b/streaming/rrdpush.c
@@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-3.0-or-later
#include "rrdpush.h"
+#include "../parser/parser.h"
/*
* rrdpush
@@ -25,15 +26,9 @@
*
*/
-#define START_STREAMING_PROMPT "Hit me baby, push them over..."
-
-typedef enum {
- RRDPUSH_MULTIPLE_CONNECTIONS_ALLOW,
- RRDPUSH_MULTIPLE_CONNECTIONS_DENY_NEW
-} RRDPUSH_MULTIPLE_CONNECTIONS_STRATEGY;
-
-static struct config stream_config = {
- .sections = NULL,
+struct config stream_config = {
+ .first_section = NULL,
+ .last_section = NULL,
.mutex = NETDATA_MUTEX_INITIALIZER,
.index = {
.avl_tree = {
@@ -57,12 +52,12 @@ char *netdata_ssl_ca_file = NULL;
static void load_stream_conf() {
errno = 0;
char *filename = strdupz_path_subpath(netdata_configured_user_config_dir, "stream.conf");
- if(!appconfig_load(&stream_config, filename, 0)) {
+ if(!appconfig_load(&stream_config, filename, 0, NULL)) {
info("CONFIG: cannot load user config '%s'. Will try stock config.", filename);
freez(filename);
filename = strdupz_path_subpath(netdata_configured_stock_config_dir, "stream.conf");
- if(!appconfig_load(&stream_config, filename, 0))
+ if(!appconfig_load(&stream_config, filename, 0, NULL))
info("CONFIG: cannot load stock config '%s'. Running with internal defaults.", filename);
}
freez(filename);
@@ -79,6 +74,7 @@ int rrdpush_init() {
default_rrdpush_send_charts_matching = appconfig_get(&stream_config, CONFIG_SECTION_STREAM, "send charts matching", "*");
rrdhost_free_orphan_time = config_get_number(CONFIG_SECTION_GLOBAL, "cleanup orphan hosts after seconds", rrdhost_free_orphan_time);
+
if(default_rrdpush_enabled && (!default_rrdpush_destination || !*default_rrdpush_destination || !default_rrdpush_api_key || !*default_rrdpush_api_key)) {
error("STREAM [send]: cannot enable sending thread - information is missing.");
default_rrdpush_enabled = 0;
@@ -96,6 +92,7 @@ int rrdpush_init() {
}
char *invalid_certificate = appconfig_get(&stream_config, CONFIG_SECTION_STREAM, "ssl skip certificate verification", "no");
+
if ( !strcmp(invalid_certificate,"yes")){
if (netdata_validate_server == NETDATA_SSL_VALID_CERTIFICATE){
info("Netdata is configured to accept invalid SSL certificate.");
@@ -110,8 +107,6 @@ int rrdpush_init() {
return default_rrdpush_enabled;
}
-#define CONNECTED_TO_SIZE 100
-
// data collection happens from multiple threads
// each of these threads calls rrdset_done()
// which in turn calls rrdset_done_push()
@@ -126,8 +121,6 @@ int rrdpush_init() {
// this is for the first iterations of each chart
unsigned int remote_clock_resync_iterations = 60;
-#define rrdpush_buffer_lock(host) netdata_mutex_lock(&((host)->rrdpush_sender_buffer_mutex))
-#define rrdpush_buffer_unlock(host) netdata_mutex_unlock(&((host)->rrdpush_sender_buffer_mutex))
static inline int should_send_chart_matching(RRDSET *st) {
if(unlikely(!rrdset_flag_check(st, RRDSET_FLAG_ENABLED))) {
@@ -151,6 +144,25 @@ static inline int should_send_chart_matching(RRDSET *st) {
return(rrdset_flag_check(st, RRDSET_FLAG_UPSTREAM_SEND));
}
+int configured_as_parent() {
+ struct section *section = NULL;
+ int is_parent = 0;
+
+ appconfig_wrlock(&stream_config);
+ for (section = stream_config.first_section; section; section = section->next) {
+ uuid_t uuid;
+
+ if (uuid_parse(section->name, uuid) != -1 &&
+ appconfig_get_boolean_by_section(section, "enabled", 0)) {
+ is_parent = 1;
+ break;
+ }
+ }
+ appconfig_unlock(&stream_config);
+
+ return is_parent;
+}
+
// checks if the current chart definition has been sent
static inline int need_to_send_chart_definition(RRDSET *st) {
rrdset_check_rdlock(st);
@@ -171,7 +183,8 @@ static inline int need_to_send_chart_definition(RRDSET *st) {
return 0;
}
-// sends the current chart definition
+// Send the current chart definition.
+// Assumes that collector thread has already called sender_start for mutex / buffer state.
static inline void rrdpush_send_chart_definition_nolock(RRDSET *st) {
RRDHOST *host = st->rrdhost;
@@ -190,11 +203,9 @@ static inline void rrdpush_send_chart_definition_nolock(RRDSET *st) {
}
}
- // info("CHART '%s' '%s'", st->id, name);
-
// send the chart
buffer_sprintf(
- host->rrdpush_sender_buffer
+ host->sender->build
, "CHART \"%s\" \"%s\" \"%s\" \"%s\" \"%s\" \"%s\" \"%s\" %ld %d \"%s %s %s %s\" \"%s\" \"%s\"\n"
, st->id
, name
@@ -217,7 +228,7 @@ static inline void rrdpush_send_chart_definition_nolock(RRDSET *st) {
RRDDIM *rd;
rrddim_foreach_read(rd, st) {
buffer_sprintf(
- host->rrdpush_sender_buffer
+ host->sender->build
, "DIMENSION \"%s\" \"%s\" \"%s\" " COLLECTED_NUMBER_FORMAT " " COLLECTED_NUMBER_FORMAT " \"%s %s %s\"\n"
, rd->id
, rd->name
@@ -238,7 +249,7 @@ static inline void rrdpush_send_chart_definition_nolock(RRDSET *st) {
calculated_number *value = (calculated_number *) rs->value;
buffer_sprintf(
- host->rrdpush_sender_buffer
+ host->sender->build
, "VARIABLE CHART %s = " CALCULATED_NUMBER_FORMAT "\n"
, rs->variable
, *value
@@ -250,25 +261,29 @@ static inline void rrdpush_send_chart_definition_nolock(RRDSET *st) {
}
// sends the current chart dimensions
-static inline void rrdpush_send_chart_metrics_nolock(RRDSET *st) {
+static inline void rrdpush_send_chart_metrics_nolock(RRDSET *st, struct sender_state *s) {
RRDHOST *host = st->rrdhost;
- buffer_sprintf(host->rrdpush_sender_buffer, "BEGIN \"%s\" %llu\n", st->id, (st->last_collected_time.tv_sec > st->upstream_resync_time)?st->usec_since_last_update:0);
+ buffer_sprintf(host->sender->build, "BEGIN \"%s\" %llu", st->id, (st->last_collected_time.tv_sec > st->upstream_resync_time)?st->usec_since_last_update:0);
+ if (s->version >= VERSION_GAP_FILLING)
+ buffer_sprintf(host->sender->build, " %ld\n", st->last_collected_time.tv_sec);
+ else
+ buffer_strcat(host->sender->build, "\n");
RRDDIM *rd;
rrddim_foreach_read(rd, st) {
if(rd->updated && rd->exposed)
- buffer_sprintf(host->rrdpush_sender_buffer
+ buffer_sprintf(host->sender->build
, "SET \"%s\" = " COLLECTED_NUMBER_FORMAT "\n"
, rd->id
, rd->collected_value
);
}
-
- buffer_strcat(host->rrdpush_sender_buffer, "END\n");
+ buffer_strcat(host->sender->build, "END\n");
}
static void rrdpush_sender_thread_spawn(RRDHOST *host);
+// Called from the internal collectors to mark a chart obsolete.
void rrdset_push_chart_definition_now(RRDSET *st) {
RRDHOST *host = st->rrdhost;
@@ -276,9 +291,9 @@ void rrdset_push_chart_definition_now(RRDSET *st) {
return;
rrdset_rdlock(st);
- rrdpush_buffer_lock(host);
+ sender_start(host->sender);
rrdpush_send_chart_definition_nolock(st);
- rrdpush_buffer_unlock(host);
+ sender_commit(host->sender);
rrdset_unlock(st);
}
@@ -288,18 +303,14 @@ void rrdset_done_push(RRDSET *st) {
RRDHOST *host = st->rrdhost;
- rrdpush_buffer_lock(host);
-
if(unlikely(host->rrdpush_send_enabled && !host->rrdpush_sender_spawn))
rrdpush_sender_thread_spawn(host);
- if(unlikely(!host->rrdpush_sender_buffer || !host->rrdpush_sender_connected)) {
+ // Handle non-connected case
+ if(unlikely(!host->rrdpush_sender_connected)) {
if(unlikely(!host->rrdpush_sender_error_shown))
error("STREAM %s [send]: not ready - discarding collected metrics.", host->hostname);
-
host->rrdpush_sender_error_shown = 1;
-
- rrdpush_buffer_unlock(host);
return;
}
else if(unlikely(host->rrdpush_sender_error_shown)) {
@@ -307,105 +318,82 @@ void rrdset_done_push(RRDSET *st) {
host->rrdpush_sender_error_shown = 0;
}
+ sender_start(host->sender);
+
if(need_to_send_chart_definition(st))
rrdpush_send_chart_definition_nolock(st);
- rrdpush_send_chart_metrics_nolock(st);
+ rrdpush_send_chart_metrics_nolock(st, host->sender);
// signal the sender there are more data
if(host->rrdpush_sender_pipe[PIPE_WRITE] != -1 && write(host->rrdpush_sender_pipe[PIPE_WRITE], " ", 1) == -1)
error("STREAM %s [send]: cannot write to internal pipe", host->hostname);
- rrdpush_buffer_unlock(host);
+ sender_commit(host->sender);
}
-// ----------------------------------------------------------------------------
-// rrdpush sender thread
-
-static inline void rrdpush_sender_add_host_variable_to_buffer_nolock(RRDHOST *host, RRDVAR *rv) {
- calculated_number *value = (calculated_number *)rv->value;
+// labels
+void rrdpush_send_labels(RRDHOST *host) {
+ if (!host->labels.head || !(host->labels.labels_flag & LABEL_FLAG_UPDATE_STREAM) || (host->labels.labels_flag & LABEL_FLAG_STOP_STREAM))
+ return;
- buffer_sprintf(
- host->rrdpush_sender_buffer
- , "VARIABLE HOST %s = " CALCULATED_NUMBER_FORMAT "\n"
- , rv->name
- , *value
- );
+ sender_start(host->sender);
+ rrdhost_rdlock(host);
+ netdata_rwlock_rdlock(&host->labels.labels_rwlock);
- debug(D_STREAM, "RRDVAR pushed HOST VARIABLE %s = " CALCULATED_NUMBER_FORMAT, rv->name, *value);
-}
+ struct label *label_i = host->labels.head;
+ while(label_i) {
+ buffer_sprintf(host->sender->build
+ , "LABEL \"%s\" = %d %s\n"
+ , label_i->key
+ , (int)label_i->label_source
+ , label_i->value);
-void rrdpush_sender_send_this_host_variable_now(RRDHOST *host, RRDVAR *rv) {
- if(host->rrdpush_send_enabled && host->rrdpush_sender_spawn && host->rrdpush_sender_connected) {
- rrdpush_buffer_lock(host);
- rrdpush_sender_add_host_variable_to_buffer_nolock(host, rv);
- rrdpush_buffer_unlock(host);
+ label_i = label_i->next;
}
-}
-
-static int rrdpush_sender_thread_custom_host_variables_callback(void *rrdvar_ptr, void *host_ptr) {
- RRDVAR *rv = (RRDVAR *)rrdvar_ptr;
- RRDHOST *host = (RRDHOST *)host_ptr;
- if(unlikely(rv->options & RRDVAR_OPTION_CUSTOM_HOST_VAR && rv->type == RRDVAR_TYPE_CALCULATED)) {
- rrdpush_sender_add_host_variable_to_buffer_nolock(host, rv);
+ buffer_sprintf(host->sender->build
+ , "OVERWRITE %s\n", "labels");
- // return 1, so that the traversal will return the number of variables sent
- return 1;
- }
-
- // returning a negative number will break the traversal
- return 0;
-}
+ netdata_rwlock_unlock(&host->labels.labels_rwlock);
+ rrdhost_unlock(host);
+ sender_commit(host->sender);
-static void rrdpush_sender_thread_send_custom_host_variables(RRDHOST *host) {
- int ret = rrdvar_callback_for_all_host_variables(host, rrdpush_sender_thread_custom_host_variables_callback, host);
- (void)ret;
+ if(host->rrdpush_sender_pipe[PIPE_WRITE] != -1 && write(host->rrdpush_sender_pipe[PIPE_WRITE], " ", 1) == -1)
+ error("STREAM %s [send]: cannot write to internal pipe", host->hostname);
- debug(D_STREAM, "RRDVAR sent %d VARIABLES", ret);
+ host->labels.labels_flag &= ~LABEL_FLAG_UPDATE_STREAM;
}
-// resets all the chart, so that their definitions
-// will be resent to the central netdata
-static void rrdpush_sender_thread_reset_all_charts(RRDHOST *host) {
- rrdhost_rdlock(host);
-
- RRDSET *st;
- rrdset_foreach_read(st, host) {
- rrdset_flag_clear(st, RRDSET_FLAG_UPSTREAM_EXPOSED);
+void rrdpush_claimed_id(RRDHOST *host)
+{
+ if(unlikely(!host->rrdpush_send_enabled || !host->rrdpush_sender_connected))
+ return;
+
+ if(host->sender->version < STREAM_VERSION_CLAIM)
+ return;
- st->upstream_resync_time = 0;
+ sender_start(host->sender);
+ rrdhost_aclk_state_lock(host);
- rrdset_rdlock(st);
+ buffer_sprintf(host->sender->build, "CLAIMED_ID %s %s\n", host->machine_guid, (host->aclk_state.claimed_id ? host->aclk_state.claimed_id : "NULL") );
- RRDDIM *rd;
- rrddim_foreach_read(rd, st)
- rd->exposed = 0;
+ rrdhost_aclk_state_unlock(host);
+ sender_commit(host->sender);
- rrdset_unlock(st);
- }
-
- rrdhost_unlock(host);
+ // signal the sender there are more data
+ if(host->rrdpush_sender_pipe[PIPE_WRITE] != -1 && write(host->rrdpush_sender_pipe[PIPE_WRITE], " ", 1) == -1)
+ error("STREAM %s [send]: cannot write to internal pipe", host->hostname);
}
-static inline void rrdpush_sender_thread_data_flush(RRDHOST *host) {
- rrdpush_buffer_lock(host);
-
- if(buffer_strlen(host->rrdpush_sender_buffer))
- error("STREAM %s [send]: discarding %zu bytes of metrics already in the buffer.", host->hostname, buffer_strlen(host->rrdpush_sender_buffer));
-
- buffer_flush(host->rrdpush_sender_buffer);
-
- rrdpush_sender_thread_reset_all_charts(host);
- rrdpush_sender_thread_send_custom_host_variables(host);
-
- rrdpush_buffer_unlock(host);
-}
+// ----------------------------------------------------------------------------
+// rrdpush sender thread
+// Either the receiver lost the connection or the host is being destroyed.
+// The sender mutex guards thread creation, any spurious data is wiped on reconnection.
void rrdpush_sender_thread_stop(RRDHOST *host) {
- rrdpush_buffer_lock(host);
- rrdhost_wrlock(host);
+ netdata_mutex_lock(&host->sender->mutex);
netdata_thread_t thr = 0;
if(host->rrdpush_sender_spawn) {
@@ -422,8 +410,7 @@ void rrdpush_sender_thread_stop(RRDHOST *host) {
netdata_thread_cancel(host->rrdpush_sender_thread);
}
- rrdhost_unlock(host);
- rrdpush_buffer_unlock(host);
+ netdata_mutex_unlock(&host->sender->mutex);
if(thr != 0) {
info("STREAM %s [send]: waiting for the sending thread to stop...", host->hostname);
@@ -433,828 +420,28 @@ void rrdpush_sender_thread_stop(RRDHOST *host) {
}
}
-static inline void rrdpush_sender_thread_close_socket(RRDHOST *host) {
- host->rrdpush_sender_connected = 0;
-
- if(host->rrdpush_sender_socket != -1) {
- close(host->rrdpush_sender_socket);
- host->rrdpush_sender_socket = -1;
- }
-}
-
-//called from client side
-static int rrdpush_sender_thread_connect_to_master(RRDHOST *host, int default_port, int timeout, size_t *reconnects_counter, char *connected_to, size_t connected_to_size) {
- struct timeval tv = {
- .tv_sec = timeout,
- .tv_usec = 0
- };
-
- // make sure the socket is closed
- rrdpush_sender_thread_close_socket(host);
-
- debug(D_STREAM, "STREAM: Attempting to connect...");
- info("STREAM %s [send to %s]: connecting...", host->hostname, host->rrdpush_send_destination);
-
- host->rrdpush_sender_socket = connect_to_one_of(
- host->rrdpush_send_destination
- , default_port
- , &tv
- , reconnects_counter
- , connected_to
- , connected_to_size
- );
-
- if(unlikely(host->rrdpush_sender_socket == -1)) {
- error("STREAM %s [send to %s]: failed to connect", host->hostname, host->rrdpush_send_destination);
- return 0;
- }
-
- info("STREAM %s [send to %s]: initializing communication...", host->hostname, connected_to);
-
-#ifdef ENABLE_HTTPS
- if( netdata_client_ctx ){
- host->ssl.flags = NETDATA_SSL_START;
- if (!host->ssl.conn){
- host->ssl.conn = SSL_new(netdata_client_ctx);
- if(!host->ssl.conn){
- error("Failed to allocate SSL structure.");
- host->ssl.flags = NETDATA_SSL_NO_HANDSHAKE;
- }
- }
- else{
- SSL_clear(host->ssl.conn);
- }
-
- if (host->ssl.conn)
- {
- if (SSL_set_fd(host->ssl.conn, host->rrdpush_sender_socket) != 1) {
- error("Failed to set the socket to the SSL on socket fd %d.", host->rrdpush_sender_socket);
- host->ssl.flags = NETDATA_SSL_NO_HANDSHAKE;
- } else{
- host->ssl.flags = NETDATA_SSL_HANDSHAKE_COMPLETE;
- }
- }
- }
- else {
- host->ssl.flags = NETDATA_SSL_NO_HANDSHAKE;
- }
-#endif
-
- #define HTTP_HEADER_SIZE 8192
- char http[HTTP_HEADER_SIZE + 1];
- int eol = snprintfz(http, HTTP_HEADER_SIZE,
- "STREAM key=%s&hostname=%s&registry_hostname=%s&machine_guid=%s&update_every=%d&os=%s&timezone=%s&tags=%s"
- "&NETDATA_SYSTEM_OS_NAME=%s"
- "&NETDATA_SYSTEM_OS_ID=%s"
- "&NETDATA_SYSTEM_OS_ID_LIKE=%s"
- "&NETDATA_SYSTEM_OS_VERSION=%s"
- "&NETDATA_SYSTEM_OS_VERSION_ID=%s"
- "&NETDATA_SYSTEM_OS_DETECTION=%s"
- "&NETDATA_SYSTEM_KERNEL_NAME=%s"
- "&NETDATA_SYSTEM_KERNEL_VERSION=%s"
- "&NETDATA_SYSTEM_ARCHITECTURE=%s"
- "&NETDATA_SYSTEM_VIRTUALIZATION=%s"
- "&NETDATA_SYSTEM_VIRT_DETECTION=%s"
- "&NETDATA_SYSTEM_CONTAINER=%s"
- "&NETDATA_SYSTEM_CONTAINER_DETECTION=%s"
- " HTTP/1.1\r\n"
- "User-Agent: %s/%s\r\n"
- "Accept: */*\r\n\r\n"
- , host->rrdpush_send_api_key
- , host->hostname
- , host->registry_hostname
- , host->machine_guid
- , default_rrd_update_every
- , host->os
- , host->timezone
- , (host->tags) ? host->tags : ""
- , (host->system_info->os_name) ? host->system_info->os_name : ""
- , (host->system_info->os_id) ? host->system_info->os_id : ""
- , (host->system_info->os_id_like) ? host->system_info->os_id_like : ""
- , (host->system_info->os_version) ? host->system_info->os_version : ""
- , (host->system_info->os_version_id) ? host->system_info->os_version_id : ""
- , (host->system_info->os_detection) ? host->system_info->os_detection : ""
- , (host->system_info->kernel_name) ? host->system_info->kernel_name : ""
- , (host->system_info->kernel_version) ? host->system_info->kernel_version : ""
- , (host->system_info->architecture) ? host->system_info->architecture : ""
- , (host->system_info->virtualization) ? host->system_info->virtualization : ""
- , (host->system_info->virt_detection) ? host->system_info->virt_detection : ""
- , (host->system_info->container) ? host->system_info->container : ""
- , (host->system_info->container_detection) ? host->system_info->container_detection : ""
- , host->program_name
- , host->program_version
- );
- http[eol] = 0x00;
-
-#ifdef ENABLE_HTTPS
- if (!host->ssl.flags) {
- ERR_clear_error();
- SSL_set_connect_state(host->ssl.conn);
- int err = SSL_connect(host->ssl.conn);
- if (err != 1){
- err = SSL_get_error(host->ssl.conn, err);
- error("SSL cannot connect with the server: %s ",ERR_error_string((long)SSL_get_error(host->ssl.conn,err),NULL));
- if (netdata_use_ssl_on_stream == NETDATA_SSL_FORCE) {
- rrdpush_sender_thread_close_socket(host);
- return 0;
- }else {
- host->ssl.flags = NETDATA_SSL_NO_HANDSHAKE;
- }
- }
- else {
- if (netdata_use_ssl_on_stream == NETDATA_SSL_FORCE) {
- if (netdata_validate_server == NETDATA_SSL_VALID_CERTIFICATE) {
- if ( security_test_certificate(host->ssl.conn)) {
- error("Closing the stream connection, because the server SSL certificate is not valid.");
- rrdpush_sender_thread_close_socket(host);
- return 0;
- }
- }
- }
- }
- }
- if(send_timeout(&host->ssl,host->rrdpush_sender_socket, http, strlen(http), 0, timeout) == -1) {
-#else
- if(send_timeout(host->rrdpush_sender_socket, http, strlen(http), 0, timeout) == -1) {
-#endif
- error("STREAM %s [send to %s]: failed to send HTTP header to remote netdata.", host->hostname, connected_to);
- rrdpush_sender_thread_close_socket(host);
- return 0;
- }
-
- info("STREAM %s [send to %s]: waiting response from remote netdata...", host->hostname, connected_to);
-
-#ifdef ENABLE_HTTPS
- if(recv_timeout(&host->ssl,host->rrdpush_sender_socket, http, HTTP_HEADER_SIZE, 0, timeout) == -1) {
-#else
- if(recv_timeout(host->rrdpush_sender_socket, http, HTTP_HEADER_SIZE, 0, timeout) == -1) {
-#endif
- error("STREAM %s [send to %s]: remote netdata does not respond.", host->hostname, connected_to);
- rrdpush_sender_thread_close_socket(host);
- return 0;
- }
-
- if(strncmp(http, START_STREAMING_PROMPT, strlen(START_STREAMING_PROMPT)) != 0) {
- error("STREAM %s [send to %s]: server is not replying properly (is it a netdata?).", host->hostname, connected_to);
- rrdpush_sender_thread_close_socket(host);
- return 0;
- }
-
- info("STREAM %s [send to %s]: established communication - ready to send metrics...", host->hostname, connected_to);
-
- if(sock_setnonblock(host->rrdpush_sender_socket) < 0)
- error("STREAM %s [send to %s]: cannot set non-blocking mode for socket.", host->hostname, connected_to);
-
- if(sock_enlarge_out(host->rrdpush_sender_socket) < 0)
- error("STREAM %s [send to %s]: cannot enlarge the socket buffer.", host->hostname, connected_to);
-
- debug(D_STREAM, "STREAM: Connected on fd %d...", host->rrdpush_sender_socket);
-
- return 1;
-}
-
-static void rrdpush_sender_thread_cleanup_callback(void *ptr) {
- RRDHOST *host = (RRDHOST *)ptr;
-
- rrdpush_buffer_lock(host);
- rrdhost_wrlock(host);
-
- info("STREAM %s [send]: sending thread cleans up...", host->hostname);
-
- rrdpush_sender_thread_close_socket(host);
-
- // close the pipe
- if(host->rrdpush_sender_pipe[PIPE_READ] != -1) {
- close(host->rrdpush_sender_pipe[PIPE_READ]);
- host->rrdpush_sender_pipe[PIPE_READ] = -1;
- }
-
- if(host->rrdpush_sender_pipe[PIPE_WRITE] != -1) {
- close(host->rrdpush_sender_pipe[PIPE_WRITE]);
- host->rrdpush_sender_pipe[PIPE_WRITE] = -1;
- }
-
- buffer_free(host->rrdpush_sender_buffer);
- host->rrdpush_sender_buffer = NULL;
-
- if(!host->rrdpush_sender_join) {
- info("STREAM %s [send]: sending thread detaches itself.", host->hostname);
- netdata_thread_detach(netdata_thread_self());
- }
-
- host->rrdpush_sender_spawn = 0;
-
- info("STREAM %s [send]: sending thread now exits.", host->hostname);
-
- rrdhost_unlock(host);
- rrdpush_buffer_unlock(host);
-}
-
-void *rrdpush_sender_thread(void *ptr) {
- RRDHOST *host = (RRDHOST *)ptr;
-
- if(!host->rrdpush_send_enabled || !host->rrdpush_send_destination || !*host->rrdpush_send_destination || !host->rrdpush_send_api_key || !*host->rrdpush_send_api_key) {
- error("STREAM %s [send]: thread created (task id %d), but host has streaming disabled.", host->hostname, gettid());
- return NULL;
- }
-
-#ifdef ENABLE_HTTPS
- if (netdata_use_ssl_on_stream & NETDATA_SSL_FORCE ){
- security_start_ssl(NETDATA_SSL_CONTEXT_STREAMING);
- security_location_for_context(netdata_client_ctx, netdata_ssl_ca_file, netdata_ssl_ca_path);
- }
-#endif
-
- info("STREAM %s [send]: thread created (task id %d)", host->hostname, gettid());
-
- int timeout = (int)appconfig_get_number(&stream_config, CONFIG_SECTION_STREAM, "timeout seconds", 60);
- int default_port = (int)appconfig_get_number(&stream_config, CONFIG_SECTION_STREAM, "default port", 19999);
- size_t max_size = (size_t)appconfig_get_number(&stream_config, CONFIG_SECTION_STREAM, "buffer size bytes", 1024 * 1024);
- unsigned int reconnect_delay = (unsigned int)appconfig_get_number(&stream_config, CONFIG_SECTION_STREAM, "reconnect delay seconds", 5);
- remote_clock_resync_iterations = (unsigned int)appconfig_get_number(&stream_config, CONFIG_SECTION_STREAM, "initial clock resync iterations", remote_clock_resync_iterations);
- char connected_to[CONNECTED_TO_SIZE + 1] = "";
-
- // initialize rrdpush globals
- host->rrdpush_sender_buffer = buffer_create(1);
- host->rrdpush_sender_connected = 0;
- if(pipe(host->rrdpush_sender_pipe) == -1) fatal("STREAM %s [send]: cannot create required pipe.", host->hostname);
-
- // initialize local variables
- size_t begin = 0;
- size_t reconnects_counter = 0;
- size_t sent_bytes = 0;
- size_t sent_bytes_on_this_connection = 0;
- size_t send_attempts = 0;
-
-
- time_t last_sent_t = 0;
- struct pollfd fds[2], *ifd, *ofd;
- nfds_t fdmax;
-
- ifd = &fds[0];
- ofd = &fds[1];
-
- size_t not_connected_loops = 0;
-
- netdata_thread_cleanup_push(rrdpush_sender_thread_cleanup_callback, host);
-
- for(; host->rrdpush_send_enabled && !netdata_exit ;) {
- // check for outstanding cancellation requests
- netdata_thread_testcancel();
-
- // if we don't have socket open, lets wait a bit
- if(unlikely(host->rrdpush_sender_socket == -1)) {
- send_attempts = 0;
-
- if(not_connected_loops == 0 && sent_bytes_on_this_connection > 0) {
- // fast re-connection on first disconnect
- sleep_usec(USEC_PER_MS * 500); // milliseconds
- }
- else {
- // slow re-connection on repeating errors
- sleep_usec(USEC_PER_SEC * reconnect_delay); // seconds
- }
-
- if(rrdpush_sender_thread_connect_to_master(host, default_port, timeout, &reconnects_counter, connected_to, CONNECTED_TO_SIZE)) {
- last_sent_t = now_monotonic_sec();
-
- // reset the buffer, to properly send charts and metrics
- rrdpush_sender_thread_data_flush(host);
-
- // send from the beginning
- begin = 0;
-
- // make sure the next reconnection will be immediate
- not_connected_loops = 0;
-
- // reset the bytes we have sent for this session
- sent_bytes_on_this_connection = 0;
-
- // let the data collection threads know we are ready
- host->rrdpush_sender_connected = 1;
- }
- else {
- // increase the failed connections counter
- not_connected_loops++;
-
- // reset the number of bytes sent
- sent_bytes_on_this_connection = 0;
- }
-
- // loop through
- continue;
- }
- else if(unlikely(now_monotonic_sec() - last_sent_t > timeout)) {
- error("STREAM %s [send to %s]: could not send metrics for %d seconds - closing connection - we have sent %zu bytes on this connection via %zu send attempts.", host->hostname, connected_to, timeout, sent_bytes_on_this_connection, send_attempts);
- rrdpush_sender_thread_close_socket(host);
- }
-
- ifd->fd = host->rrdpush_sender_pipe[PIPE_READ];
- ifd->events = POLLIN;
- ifd->revents = 0;
-
- ofd->fd = host->rrdpush_sender_socket;
- ofd->revents = 0;
- if(ofd->fd != -1 && begin < buffer_strlen(host->rrdpush_sender_buffer)) {
- debug(D_STREAM, "STREAM: Requesting data output on streaming socket %d...", ofd->fd);
- ofd->events = POLLOUT;
- fdmax = 2;
- send_attempts++;
- }
- else {
- debug(D_STREAM, "STREAM: Not requesting data output on streaming socket %d (nothing to send now)...", ofd->fd);
- ofd->events = 0;
- fdmax = 1;
- }
-
- debug(D_STREAM, "STREAM: Waiting for poll() events (current buffer length %zu bytes)...", buffer_strlen(host->rrdpush_sender_buffer));
- if(unlikely(netdata_exit)) break;
- int retval = poll(fds, fdmax, 1000);
- if(unlikely(netdata_exit)) break;
-
- if(unlikely(retval == -1)) {
- debug(D_STREAM, "STREAM: poll() failed (current buffer length %zu bytes)...", buffer_strlen(host->rrdpush_sender_buffer));
-
- if(errno == EAGAIN || errno == EINTR) {
- debug(D_STREAM, "STREAM: poll() failed with EAGAIN or EINTR...");
- }
- else {
- error("STREAM %s [send to %s]: failed to poll(). Closing socket.", host->hostname, connected_to);
- rrdpush_sender_thread_close_socket(host);
- }
-
- continue;
- }
- else if(likely(retval)) {
- if (ifd->revents & POLLIN || ifd->revents & POLLPRI) {
- debug(D_STREAM, "STREAM: Data added to send buffer (current buffer length %zu bytes)...", buffer_strlen(host->rrdpush_sender_buffer));
-
- char buffer[1000 + 1];
- if (read(host->rrdpush_sender_pipe[PIPE_READ], buffer, 1000) == -1)
- error("STREAM %s [send to %s]: cannot read from internal pipe.", host->hostname, connected_to);
- }
-
- if (ofd->revents & POLLOUT) {
- if (begin < buffer_strlen(host->rrdpush_sender_buffer)) {
- debug(D_STREAM, "STREAM: Sending data (current buffer length %zu bytes, begin = %zu)...", buffer_strlen(host->rrdpush_sender_buffer), begin);
-
- // BEGIN RRDPUSH LOCKED SESSION
-
- // during this session, data collectors
- // will not be able to append data to our buffer
- // but the socket is in non-blocking mode
- // so, we will not block at send()
-
- netdata_thread_disable_cancelability();
-
- debug(D_STREAM, "STREAM: Getting exclusive lock on host...");
- rrdpush_buffer_lock(host);
-
- debug(D_STREAM, "STREAM: Sending data, starting from %zu, size %zu...", begin, buffer_strlen(host->rrdpush_sender_buffer));
- ssize_t ret;
-#ifdef ENABLE_HTTPS
- SSL *conn = host->ssl.conn ;
- if(conn && !host->ssl.flags) {
- ret = SSL_write(conn,&host->rrdpush_sender_buffer->buffer[begin], buffer_strlen(host->rrdpush_sender_buffer) - begin);
- } else {
- ret = send(host->rrdpush_sender_socket, &host->rrdpush_sender_buffer->buffer[begin], buffer_strlen(host->rrdpush_sender_buffer) - begin, MSG_DONTWAIT);
- }
-#else
- ret = send(host->rrdpush_sender_socket, &host->rrdpush_sender_buffer->buffer[begin], buffer_strlen(host->rrdpush_sender_buffer) - begin, MSG_DONTWAIT);
-#endif
- if (unlikely(ret == -1)) {
- if (errno != EAGAIN && errno != EINTR && errno != EWOULDBLOCK) {
- debug(D_STREAM, "STREAM: Send failed - closing socket...");
- error("STREAM %s [send to %s]: failed to send metrics - closing connection - we have sent %zu bytes on this connection.", host->hostname, connected_to, sent_bytes_on_this_connection);
- rrdpush_sender_thread_close_socket(host);
- }
- else {
- debug(D_STREAM, "STREAM: Send failed - will retry...");
- }
- }
- else if (likely(ret > 0)) {
- // DEBUG - dump the string to see it
- //char c = host->rrdpush_sender_buffer->buffer[begin + ret];
- //host->rrdpush_sender_buffer->buffer[begin + ret] = '\0';
- //debug(D_STREAM, "STREAM: sent from %zu to %zd:\n%s\n", begin, ret, &host->rrdpush_sender_buffer->buffer[begin]);
- //host->rrdpush_sender_buffer->buffer[begin + ret] = c;
-
- sent_bytes_on_this_connection += ret;
- sent_bytes += ret;
- begin += ret;
-
- if (begin == buffer_strlen(host->rrdpush_sender_buffer)) {
- // we send it all
-
- debug(D_STREAM, "STREAM: Sent %zd bytes (the whole buffer)...", ret);
- buffer_flush(host->rrdpush_sender_buffer);
- begin = 0;
- }
- else {
- debug(D_STREAM, "STREAM: Sent %zd bytes (part of the data buffer)...", ret);
- }
-
- last_sent_t = now_monotonic_sec();
- }
- else {
- debug(D_STREAM, "STREAM: send() returned %zd - closing the socket...", ret);
- error("STREAM %s [send to %s]: failed to send metrics (send() returned %zd) - closing connection - we have sent %zu bytes on this connection.",
- host->hostname, connected_to, ret, sent_bytes_on_this_connection);
- rrdpush_sender_thread_close_socket(host);
- }
-
- debug(D_STREAM, "STREAM: Releasing exclusive lock on host...");
- rrdpush_buffer_unlock(host);
-
- netdata_thread_enable_cancelability();
-
- // END RRDPUSH LOCKED SESSION
- }
- else {
- debug(D_STREAM, "STREAM: we have sent the entire buffer, but we received POLLOUT...");
- }
- }
-
- if(host->rrdpush_sender_socket != -1) {
- char *error = NULL;
-
- if (unlikely(ofd->revents & POLLERR))
- error = "socket reports errors (POLLERR)";
-
- else if (unlikely(ofd->revents & POLLHUP))
- error = "connection closed by remote end (POLLHUP)";
-
- else if (unlikely(ofd->revents & POLLNVAL))
- error = "connection is invalid (POLLNVAL)";
-
- if(unlikely(error)) {
- debug(D_STREAM, "STREAM: %s - closing socket...", error);
- error("STREAM %s [send to %s]: %s - reopening socket - we have sent %zu bytes on this connection.", host->hostname, connected_to, error, sent_bytes_on_this_connection);
- rrdpush_sender_thread_close_socket(host);
- }
- }
- }
- else {
- debug(D_STREAM, "STREAM: poll() timed out.");
- }
-
- // protection from overflow
- if(buffer_strlen(host->rrdpush_sender_buffer) > max_size) {
- debug(D_STREAM, "STREAM: Buffer is too big (%zu bytes), bigger than the max (%zu) - flushing it...", buffer_strlen(host->rrdpush_sender_buffer), max_size);
- errno = 0;
- error("STREAM %s [send to %s]: 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.", host->hostname, connected_to, host->rrdpush_sender_buffer->len, host->rrdpush_sender_buffer->len - begin, sent_bytes, sent_bytes_on_this_connection);
- rrdpush_sender_thread_close_socket(host);
- }
- }
-
- netdata_thread_cleanup_pop(1);
- return NULL;
-}
-
// ----------------------------------------------------------------------------
// rrdpush receiver thread
-static void log_stream_connection(const char *client_ip, const char *client_port, const char *api_key, const char *machine_guid, const char *host, const char *msg) {
+void log_stream_connection(const char *client_ip, const char *client_port, const char *api_key, const char *machine_guid, const char *host, const char *msg) {
log_access("STREAM: %d '[%s]:%s' '%s' host '%s' api key '%s' machine guid '%s'", gettid(), client_ip, client_port, msg, host, api_key, machine_guid);
}
-static RRDPUSH_MULTIPLE_CONNECTIONS_STRATEGY get_multiple_connections_strategy(struct config *c, const char *section, const char *name, RRDPUSH_MULTIPLE_CONNECTIONS_STRATEGY def) {
- char *value;
- switch(def) {
- default:
- case RRDPUSH_MULTIPLE_CONNECTIONS_ALLOW:
- value = "allow";
- break;
-
- case RRDPUSH_MULTIPLE_CONNECTIONS_DENY_NEW:
- value = "deny";
- break;
- }
-
- value = appconfig_get(c, section, name, value);
-
- RRDPUSH_MULTIPLE_CONNECTIONS_STRATEGY ret = def;
-
- if(strcasecmp(value, "allow") == 0 || strcasecmp(value, "permit") == 0 || strcasecmp(value, "accept") == 0)
- ret = RRDPUSH_MULTIPLE_CONNECTIONS_ALLOW;
-
- else if(strcasecmp(value, "deny") == 0 || strcasecmp(value, "reject") == 0 || strcasecmp(value, "block") == 0)
- ret = RRDPUSH_MULTIPLE_CONNECTIONS_DENY_NEW;
-
- else
- error("Invalid stream config value at section [%s], setting '%s', value '%s'", section, name, value);
-
- return ret;
-}
-
-static int rrdpush_receive(int fd
- , const char *key
- , const char *hostname
- , const char *registry_hostname
- , const char *machine_guid
- , const char *os
- , const char *timezone
- , const char *tags
- , const char *program_name
- , const char *program_version
- , struct rrdhost_system_info *system_info
- , int update_every
- , char *client_ip
- , char *client_port
-#ifdef ENABLE_HTTPS
- , struct netdata_ssl *ssl
-#endif
-) {
- RRDHOST *host;
- int history = default_rrd_history_entries;
- RRD_MEMORY_MODE mode = default_rrd_memory_mode;
- int health_enabled = default_health_enabled;
- int rrdpush_enabled = default_rrdpush_enabled;
- char *rrdpush_destination = default_rrdpush_destination;
- char *rrdpush_api_key = default_rrdpush_api_key;
- char *rrdpush_send_charts_matching = default_rrdpush_send_charts_matching;
- time_t alarms_delay = 60;
- RRDPUSH_MULTIPLE_CONNECTIONS_STRATEGY rrdpush_multiple_connections_strategy = RRDPUSH_MULTIPLE_CONNECTIONS_ALLOW;
-
- update_every = (int)appconfig_get_number(&stream_config, machine_guid, "update every", update_every);
- if(update_every < 0) update_every = 1;
-
- history = (int)appconfig_get_number(&stream_config, key, "default history", history);
- history = (int)appconfig_get_number(&stream_config, machine_guid, "history", history);
- if(history < 5) history = 5;
-
- mode = rrd_memory_mode_id(appconfig_get(&stream_config, key, "default memory mode", rrd_memory_mode_name(mode)));
- mode = rrd_memory_mode_id(appconfig_get(&stream_config, machine_guid, "memory mode", rrd_memory_mode_name(mode)));
-
- health_enabled = appconfig_get_boolean_ondemand(&stream_config, key, "health enabled by default", health_enabled);
- health_enabled = appconfig_get_boolean_ondemand(&stream_config, machine_guid, "health enabled", health_enabled);
-
- alarms_delay = appconfig_get_number(&stream_config, key, "default postpone alarms on connect seconds", alarms_delay);
- alarms_delay = appconfig_get_number(&stream_config, machine_guid, "postpone alarms on connect seconds", alarms_delay);
-
- rrdpush_enabled = appconfig_get_boolean(&stream_config, key, "default proxy enabled", rrdpush_enabled);
- rrdpush_enabled = appconfig_get_boolean(&stream_config, machine_guid, "proxy enabled", rrdpush_enabled);
-
- rrdpush_destination = appconfig_get(&stream_config, key, "default proxy destination", rrdpush_destination);
- rrdpush_destination = appconfig_get(&stream_config, machine_guid, "proxy destination", rrdpush_destination);
-
- rrdpush_api_key = appconfig_get(&stream_config, key, "default proxy api key", rrdpush_api_key);
- rrdpush_api_key = appconfig_get(&stream_config, machine_guid, "proxy api key", rrdpush_api_key);
-
- rrdpush_multiple_connections_strategy = get_multiple_connections_strategy(&stream_config, key, "multiple connections", rrdpush_multiple_connections_strategy);
- rrdpush_multiple_connections_strategy = get_multiple_connections_strategy(&stream_config, machine_guid, "multiple connections", rrdpush_multiple_connections_strategy);
-
- rrdpush_send_charts_matching = appconfig_get(&stream_config, key, "default proxy send charts matching", rrdpush_send_charts_matching);
- rrdpush_send_charts_matching = appconfig_get(&stream_config, machine_guid, "proxy send charts matching", rrdpush_send_charts_matching);
-
- tags = appconfig_set_default(&stream_config, machine_guid, "host tags", (tags)?tags:"");
- if(tags && !*tags) tags = NULL;
-
- if (strcmp(machine_guid, localhost->machine_guid) == 0) {
- log_stream_connection(client_ip, client_port, key, machine_guid, hostname, "DENIED - ATTEMPT TO RECEIVE METRICS FROM MACHINE_GUID IDENTICAL TO MASTER");
- error("STREAM %s [receive from %s:%s]: denied to receive metrics, machine GUID [%s] is my own. Did you copy the master/proxy machine guid to a slave?", hostname, client_ip, client_port, machine_guid);
- close(fd);
- return 1;
- }
- else
- host = rrdhost_find_or_create(
- hostname
- , registry_hostname
- , machine_guid
- , os
- , timezone
- , tags
- , program_name
- , program_version
- , update_every
- , history
- , mode
- , (unsigned int)(health_enabled != CONFIG_BOOLEAN_NO)
- , (unsigned int)(rrdpush_enabled && rrdpush_destination && *rrdpush_destination && rrdpush_api_key && *rrdpush_api_key)
- , rrdpush_destination
- , rrdpush_api_key
- , rrdpush_send_charts_matching
- , system_info
- );
-
- if(!host) {
- close(fd);
- log_stream_connection(client_ip, client_port, key, machine_guid, hostname, "FAILED - CANNOT ACQUIRE HOST");
- error("STREAM %s [receive from [%s]:%s]: failed to find/create host structure.", hostname, client_ip, client_port);
- return 1;
- }
-
-#ifdef NETDATA_INTERNAL_CHECKS
- info("STREAM %s [receive from [%s]:%s]: client willing to stream metrics for host '%s' with machine_guid '%s': update every = %d, history = %ld, memory mode = %s, health %s, tags '%s'"
- , hostname
- , client_ip
- , client_port
- , host->hostname
- , host->machine_guid
- , host->rrd_update_every
- , host->rrd_history_entries
- , rrd_memory_mode_name(host->rrd_memory_mode)
- , (health_enabled == CONFIG_BOOLEAN_NO)?"disabled":((health_enabled == CONFIG_BOOLEAN_YES)?"enabled":"auto")
- , host->tags?host->tags:""
- );
-#endif // NETDATA_INTERNAL_CHECKS
-
- struct plugind cd = {
- .enabled = 1,
- .update_every = default_rrd_update_every,
- .pid = 0,
- .serial_failures = 0,
- .successful_collections = 0,
- .obsolete = 0,
- .started_t = now_realtime_sec(),
- .next = NULL,
- };
-
- // put the client IP and port into the buffers used by plugins.d
- snprintfz(cd.id, CONFIG_MAX_NAME, "%s:%s", client_ip, client_port);
- snprintfz(cd.filename, FILENAME_MAX, "%s:%s", client_ip, client_port);
- snprintfz(cd.fullfilename, FILENAME_MAX, "%s:%s", client_ip, client_port);
- snprintfz(cd.cmd, PLUGINSD_CMD_MAX, "%s:%s", client_ip, client_port);
-
- info("STREAM %s [receive from [%s]:%s]: initializing communication...", host->hostname, client_ip, client_port);
-#ifdef ENABLE_HTTPS
- host->stream_ssl.conn = ssl->conn;
- host->stream_ssl.flags = ssl->flags;
- if(send_timeout(ssl,fd, START_STREAMING_PROMPT, strlen(START_STREAMING_PROMPT), 0, 60) != strlen(START_STREAMING_PROMPT)) {
-#else
- if(send_timeout(fd, START_STREAMING_PROMPT, strlen(START_STREAMING_PROMPT), 0, 60) != strlen(START_STREAMING_PROMPT)) {
-#endif
- log_stream_connection(client_ip, client_port, key, host->machine_guid, host->hostname, "FAILED - CANNOT REPLY");
- error("STREAM %s [receive from [%s]:%s]: cannot send ready command.", host->hostname, client_ip, client_port);
- close(fd);
- return 0;
- }
-
- // remove the non-blocking flag from the socket
- if(sock_delnonblock(fd) < 0)
- error("STREAM %s [receive from [%s]:%s]: cannot remove the non-blocking flag from socket %d", host->hostname, client_ip, client_port, fd);
-
- // convert the socket to a FILE *
- FILE *fp = fdopen(fd, "r");
- if(!fp) {
- log_stream_connection(client_ip, client_port, key, host->machine_guid, host->hostname, "FAILED - SOCKET ERROR");
- error("STREAM %s [receive from [%s]:%s]: failed to get a FILE for FD %d.", host->hostname, client_ip, client_port, fd);
- close(fd);
- return 0;
- }
-
- rrdhost_wrlock(host);
- if(host->connected_senders > 0) {
- switch(rrdpush_multiple_connections_strategy) {
- case RRDPUSH_MULTIPLE_CONNECTIONS_ALLOW:
- info("STREAM %s [receive from [%s]:%s]: multiple streaming connections for the same host detected. If multiple netdata are pushing metrics for the same charts, at the same time, the result is unexpected.", host->hostname, client_ip, client_port);
- break;
-
- case RRDPUSH_MULTIPLE_CONNECTIONS_DENY_NEW:
- rrdhost_unlock(host);
- log_stream_connection(client_ip, client_port, key, host->machine_guid, host->hostname, "REJECTED - ALREADY CONNECTED");
- info("STREAM %s [receive from [%s]:%s]: multiple streaming connections for the same host detected. Rejecting new connection.", host->hostname, client_ip, client_port);
- fclose(fp);
- return 0;
- }
- }
-
- rrdhost_flag_clear(host, RRDHOST_FLAG_ORPHAN);
- host->connected_senders++;
- host->senders_disconnected_time = 0;
- if(health_enabled != CONFIG_BOOLEAN_NO) {
- if(alarms_delay > 0) {
- host->health_delay_up_to = now_realtime_sec() + alarms_delay;
- info("Postponing health checks for %ld seconds, on host '%s', because it was just connected."
- , alarms_delay
- , host->hostname
- );
- }
- }
- rrdhost_unlock(host);
-
- // call the plugins.d processor to receive the metrics
- info("STREAM %s [receive from [%s]:%s]: receiving metrics...", host->hostname, client_ip, client_port);
- log_stream_connection(client_ip, client_port, key, host->machine_guid, host->hostname, "CONNECTED");
-
- size_t count = pluginsd_process(host, &cd, fp, 1);
-
- log_stream_connection(client_ip, client_port, key, host->machine_guid, host->hostname, "DISCONNECTED");
- error("STREAM %s [receive from [%s]:%s]: disconnected (completed %zu updates).", host->hostname, client_ip, client_port, count);
-
- rrdhost_wrlock(host);
- host->senders_disconnected_time = now_realtime_sec();
- host->connected_senders--;
- if(!host->connected_senders) {
- rrdhost_flag_set(host, RRDHOST_FLAG_ORPHAN);
- if(health_enabled == CONFIG_BOOLEAN_AUTO)
- host->health_enabled = 0;
- }
- rrdhost_unlock(host);
-
- if(host->connected_senders == 0)
- rrdpush_sender_thread_stop(host);
-
- // cleanup
- fclose(fp);
-
- return (int)count;
-}
-
-struct rrdpush_thread {
- int fd;
- char *key;
- char *hostname;
- char *registry_hostname;
- char *machine_guid;
- char *os;
- char *timezone;
- char *tags;
- char *client_ip;
- char *client_port;
- char *program_name;
- char *program_version;
- struct rrdhost_system_info *system_info;
- int update_every;
-#ifdef ENABLE_HTTPS
- struct netdata_ssl ssl;
-#endif
-};
-
-static void rrdpush_receiver_thread_cleanup(void *ptr) {
- static __thread int executed = 0;
- if(!executed) {
- executed = 1;
- struct rrdpush_thread *rpt = (struct rrdpush_thread *) ptr;
-
- info("STREAM %s [receive from [%s]:%s]: receive thread ended (task id %d)", rpt->hostname, rpt->client_ip, rpt->client_port, gettid());
-
- freez(rpt->key);
- freez(rpt->hostname);
- freez(rpt->registry_hostname);
- freez(rpt->machine_guid);
- freez(rpt->os);
- freez(rpt->timezone);
- freez(rpt->tags);
- freez(rpt->client_ip);
- freez(rpt->client_port);
- freez(rpt->program_name);
- freez(rpt->program_version);
-#ifdef ENABLE_HTTPS
- if(rpt->ssl.conn){
- SSL_free(rpt->ssl.conn);
- }
-#endif
- freez(rpt);
-
- }
-}
-
-static void *rrdpush_receiver_thread(void *ptr) {
- netdata_thread_cleanup_push(rrdpush_receiver_thread_cleanup, ptr);
-
- struct rrdpush_thread *rpt = (struct rrdpush_thread *)ptr;
- info("STREAM %s [%s]:%s: receive thread created (task id %d)", rpt->hostname, rpt->client_ip, rpt->client_port, gettid());
-
- rrdpush_receive(
- rpt->fd
- , rpt->key
- , rpt->hostname
- , rpt->registry_hostname
- , rpt->machine_guid
- , rpt->os
- , rpt->timezone
- , rpt->tags
- , rpt->program_name
- , rpt->program_version
- , rpt->system_info
- , rpt->update_every
- , rpt->client_ip
- , rpt->client_port
-#ifdef ENABLE_HTTPS
- , &rpt->ssl
-#endif
- );
-
- netdata_thread_cleanup_pop(1);
- return NULL;
-}
static void rrdpush_sender_thread_spawn(RRDHOST *host) {
- rrdhost_wrlock(host);
+ netdata_mutex_lock(&host->sender->mutex);
if(!host->rrdpush_sender_spawn) {
char tag[NETDATA_THREAD_TAG_MAX + 1];
snprintfz(tag, NETDATA_THREAD_TAG_MAX, "STREAM_SENDER[%s]", host->hostname);
- if(netdata_thread_create(&host->rrdpush_sender_thread, tag, NETDATA_THREAD_OPTION_JOINABLE, rrdpush_sender_thread, (void *) host))
+ if(netdata_thread_create(&host->rrdpush_sender_thread, tag, NETDATA_THREAD_OPTION_JOINABLE, rrdpush_sender_thread, (void *) host->sender))
error("STREAM %s [send]: failed to create new thread for client.", host->hostname);
else
host->rrdpush_sender_spawn = 1;
}
-
- rrdhost_unlock(host);
+ netdata_mutex_unlock(&host->sender->mutex);
}
int rrdpush_receiver_permission_denied(struct web_client *w) {
@@ -1273,13 +460,13 @@ int rrdpush_receiver_too_busy_now(struct web_client *w) {
return 503;
}
-int rrdpush_receiver_thread_spawn(RRDHOST *host, struct web_client *w, char *url) {
- (void)host;
-
+void *rrdpush_receiver_thread(void *ptr);
+int rrdpush_receiver_thread_spawn(struct web_client *w, char *url) {
info("clients wants to STREAM metrics.");
char *key = NULL, *hostname = NULL, *registry_hostname = NULL, *machine_guid = NULL, *os = "unknown", *timezone = "unknown", *tags = NULL;
int update_every = default_rrd_update_every;
+ uint32_t stream_version = UINT_MAX;
char buf[GUID_LEN + 1];
struct rrdhost_system_info *system_info = callocz(1, sizeof(struct rrdhost_system_info));
@@ -1308,12 +495,36 @@ int rrdpush_receiver_thread_spawn(RRDHOST *host, struct web_client *w, char *url
timezone = value;
else if(!strcmp(name, "tags"))
tags = value;
- else
- if(unlikely(rrdhost_set_system_info_variable(system_info, name, value))) {
- info("STREAM [receive from [%s]:%s]: request has parameter '%s' = '%s', which is not used.", w->client_ip, w->client_port, key, value);
+ else if(!strcmp(name, "ver"))
+ stream_version = MIN((uint32_t) strtoul(value, NULL, 0), STREAMING_PROTOCOL_CURRENT_VERSION);
+ else {
+ // An old Netdata child does not have a compatible streaming protocol, map to something sane.
+ if (!strcmp(name, "NETDATA_SYSTEM_OS_NAME"))
+ name = "NETDATA_HOST_OS_NAME";
+ else if (!strcmp(name, "NETDATA_SYSTEM_OS_ID"))
+ name = "NETDATA_HOST_OS_ID";
+ else if (!strcmp(name, "NETDATA_SYSTEM_OS_ID_LIKE"))
+ name = "NETDATA_HOST_OS_ID_LIKE";
+ else if (!strcmp(name, "NETDATA_SYSTEM_OS_VERSION"))
+ name = "NETDATA_HOST_OS_VERSION";
+ else if (!strcmp(name, "NETDATA_SYSTEM_OS_VERSION_ID"))
+ name = "NETDATA_HOST_OS_VERSION_ID";
+ else if (!strcmp(name, "NETDATA_SYSTEM_OS_DETECTION"))
+ name = "NETDATA_HOST_OS_DETECTION";
+ else if(!strcmp(name, "NETDATA_PROTOCOL_VERSION") && stream_version == UINT_MAX) {
+ stream_version = 1;
}
+
+ if (unlikely(rrdhost_set_system_info_variable(system_info, name, value))) {
+ info("STREAM [receive from [%s]:%s]: request has parameter '%s' = '%s', which is not used.",
+ w->client_ip, w->client_port, name, value);
+ }
+ }
}
+ if (stream_version == UINT_MAX)
+ stream_version = 0;
+
if(!key || !*key) {
rrdhost_system_info_free(system_info);
log_stream_connection(w->client_ip, w->client_port, (key && *key)?key:"-", (machine_guid && *machine_guid)?machine_guid:"-", (hostname && *hostname)?hostname:"-", "ACCESS DENIED - NO KEY");
@@ -1412,7 +623,56 @@ int rrdpush_receiver_thread_spawn(RRDHOST *host, struct web_client *w, char *url
netdata_mutex_unlock(&stream_rate_mutex);
}
- struct rrdpush_thread *rpt = callocz(1, sizeof(struct rrdpush_thread));
+ /*
+ * Quick path for rejecting multiple connections. The lock taken is fine-grained - it only protects the receiver
+ * pointer within the host (if a host exists). This protects against multiple concurrent web requests hitting
+ * separate threads within the web-server and landing here. The lock guards the thread-shutdown sequence that
+ * detaches the receiver from the host. If the host is being created (first time-access) then we also use the
+ * lock to prevent race-hazard (two threads try to create the host concurrently, one wins and the other does a
+ * lookup to the now-attached structure).
+ */
+ struct receiver_state *rpt = callocz(1, sizeof(*rpt));
+
+ rrd_rdlock();
+ RRDHOST *host = rrdhost_find_by_guid(machine_guid, 0);
+ if (unlikely(host && rrdhost_flag_check(host, RRDHOST_FLAG_ARCHIVED))) /* Ignore archived hosts. */
+ host = NULL;
+ if (host) {
+ rrdhost_wrlock(host);
+ netdata_mutex_lock(&host->receiver_lock);
+ rrdhost_flag_clear(host, RRDHOST_FLAG_ORPHAN);
+ host->senders_disconnected_time = 0;
+ if (host->receiver != NULL) {
+ time_t age = now_realtime_sec() - host->receiver->last_msg_t;
+ if (age > 30) {
+ host->receiver->shutdown = 1;
+ shutdown(host->receiver->fd, SHUT_RDWR);
+ host->receiver = NULL; // Thread holds reference to structure
+ info("STREAM %s [receive from [%s]:%s]: multiple connections for same host detected - existing connection is dead (%ld sec), accepting new connection.", host->hostname, w->client_ip, w->client_port, age);
+ }
+ else {
+ netdata_mutex_unlock(&host->receiver_lock);
+ rrdhost_unlock(host);
+ rrd_unlock();
+ log_stream_connection(w->client_ip, w->client_port, key, host->machine_guid, host->hostname,
+ "REJECTED - ALREADY CONNECTED");
+ info("STREAM %s [receive from [%s]:%s]: multiple connections for same host detected - existing connection is active (within last %ld sec), rejecting new connection.", host->hostname, w->client_ip, w->client_port, age);
+ // Have not set WEB_CLIENT_FLAG_DONT_CLOSE_SOCKET - caller should clean up
+ buffer_flush(w->response.data);
+ buffer_strcat(w->response.data, "This GUID is already streaming to this server");
+ freez(rpt);
+ return 409;
+ }
+ }
+ host->receiver = rpt;
+ netdata_mutex_unlock(&host->receiver_lock);
+ rrdhost_unlock(host);
+ }
+ rrd_unlock();
+
+ rpt->last_msg_t = now_realtime_sec();
+
+ rpt->host = host;
rpt->fd = w->ifd;
rpt->key = strdupz(key);
rpt->hostname = strdupz(hostname);
@@ -1425,6 +685,7 @@ int rrdpush_receiver_thread_spawn(RRDHOST *host, struct web_client *w, char *url
rpt->client_port = strdupz(w->client_port);
rpt->update_every = update_every;
rpt->system_info = system_info;
+ rpt->stream_version = stream_version;
#ifdef ENABLE_HTTPS
rpt->ssl.conn = w->ssl.conn;
rpt->ssl.flags = w->ssl.flags;
@@ -1445,14 +706,13 @@ int rrdpush_receiver_thread_spawn(RRDHOST *host, struct web_client *w, char *url
}
- netdata_thread_t thread;
debug(D_SYSTEM, "starting STREAM receive thread.");
char tag[FILENAME_MAX + 1];
snprintfz(tag, FILENAME_MAX, "STREAM_RECEIVER[%s,[%s]:%s]", rpt->hostname, w->client_ip, w->client_port);
- if(netdata_thread_create(&thread, tag, NETDATA_THREAD_OPTION_DEFAULT, rrdpush_receiver_thread, (void *)rpt))
+ if(netdata_thread_create(&rpt->thread, tag, NETDATA_THREAD_OPTION_DEFAULT, rrdpush_receiver_thread, (void *)rpt))
error("Failed to create new STREAM receive thread for client.");
// prevent the caller from closing the streaming socket