Merging upstream version 1.42.3.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

5 files changed, 49 insertions, 65 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1f3a6568..4e826dbc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,11 +1,30 @@
 # Changelog
 
-## [v1.42.2](https://github.com/netdata/netdata/tree/v1.42.2) (2023-08-28)
+## [v1.42.3](https://github.com/netdata/netdata/tree/v1.42.3) (2023-09-11)
 
-[Full Changelog](https://github.com/netdata/netdata/compare/v1.42.1...v1.42.2)
+[Full Changelog](https://github.com/netdata/netdata/compare/v1.42.2...v1.42.3)
 
 **Merged pull requests:**
 
+- improved facets info [\#15936](https://github.com/netdata/netdata/pull/15936) ([ktsaou](https://github.com/ktsaou))
+- fix memory leak on prometheus exporter and code cleanup [\#15929](https://github.com/netdata/netdata/pull/15929) ([ktsaou](https://github.com/ktsaou))
+- systemd-journal and facets: info and sources [\#15928](https://github.com/netdata/netdata/pull/15928) ([ktsaou](https://github.com/ktsaou))
+- systemd-journal and facets improvements [\#15926](https://github.com/netdata/netdata/pull/15926) ([ktsaou](https://github.com/ktsaou))
+- add specific info on how to access the dashboards [\#15925](https://github.com/netdata/netdata/pull/15925) ([hugovalente-pm](https://github.com/hugovalente-pm))
+- Reduce workload during cleanup [\#15919](https://github.com/netdata/netdata/pull/15919) ([stelfrag](https://github.com/stelfrag))
+- Replace \_ with spaces for name variable for ntfy [\#15909](https://github.com/netdata/netdata/pull/15909) ([MAH69IK](https://github.com/MAH69IK))
+- python.d/sensors: Increase voltage limits 127 -\> 400 [\#15905](https://github.com/netdata/netdata/pull/15905) ([kylemanna](https://github.com/kylemanna))
+- Assorted Dockerfile cleanup. [\#15902](https://github.com/netdata/netdata/pull/15902) ([Ferroin](https://github.com/Ferroin))
+- Improve shutdown of the metadata thread [\#15901](https://github.com/netdata/netdata/pull/15901) ([stelfrag](https://github.com/stelfrag))
+- bump ui to v6.32.0 [\#15897](https://github.com/netdata/netdata/pull/15897) ([andrewm4894](https://github.com/andrewm4894))
+- Update change-metrics-storage.md [\#15896](https://github.com/netdata/netdata/pull/15896) ([Ancairon](https://github.com/Ancairon))
+- make `anomaly_detection.type_anomaly_rate` stacked [\#15895](https://github.com/netdata/netdata/pull/15895) ([andrewm4894](https://github.com/andrewm4894))
+- Update pfsense.md [\#15894](https://github.com/netdata/netdata/pull/15894) ([Ancairon](https://github.com/Ancairon))
+- Reset the obsolete flag on service thread [\#15892](https://github.com/netdata/netdata/pull/15892) ([MrZammler](https://github.com/MrZammler))
+- Add better recovery for corrupted metadata [\#15891](https://github.com/netdata/netdata/pull/15891) ([stelfrag](https://github.com/stelfrag))
+- Add index to ACLK table to improve update statements [\#15890](https://github.com/netdata/netdata/pull/15890) ([stelfrag](https://github.com/stelfrag))
+- Limit atomic operations for statistics [\#15887](https://github.com/netdata/netdata/pull/15887) ([ktsaou](https://github.com/ktsaou))
+- Properly document issues with installing on hosts without IPv4. [\#15882](https://github.com/netdata/netdata/pull/15882) ([Ferroin](https://github.com/Ferroin))
 - allow any field to be a facet [\#15880](https://github.com/netdata/netdata/pull/15880) ([ktsaou](https://github.com/ktsaou))
 - Regenerate integrations.js [\#15879](https://github.com/netdata/netdata/pull/15879) ([netdatabot](https://github.com/netdatabot))
 - use the newer XXH3 128bits algorithm, instead of the classic XXH128 [\#15878](https://github.com/netdata/netdata/pull/15878) ([ktsaou](https://github.com/ktsaou))
@@ -67,11 +86,17 @@
 - Update an oversight on the openSUSE 15.5 packages [\#15781](https://github.com/netdata/netdata/pull/15781) ([tkatsoulas](https://github.com/tkatsoulas))
 - Bump openssl version of static builds to 1.1.1v [\#15779](https://github.com/netdata/netdata/pull/15779) ([tkatsoulas](https://github.com/tkatsoulas))
 - fix: the cleanup was not performed during the kickstart.sh dry run [\#15775](https://github.com/netdata/netdata/pull/15775) ([ilyam8](https://github.com/ilyam8))
+- don't return `-1` if the socket was closed [\#15771](https://github.com/netdata/netdata/pull/15771) ([moonbreon](https://github.com/moonbreon))
 - Increase alert snapshot chunk size [\#15748](https://github.com/netdata/netdata/pull/15748) ([MrZammler](https://github.com/MrZammler))
 - Added CentOS-Stream to distros [\#15742](https://github.com/netdata/netdata/pull/15742) ([k0ste](https://github.com/k0ste))
 - Unconditionally delete very old models. [\#15720](https://github.com/netdata/netdata/pull/15720) ([vkalintiris](https://github.com/vkalintiris))
 - Misc code cleanup [\#15665](https://github.com/netdata/netdata/pull/15665) ([stelfrag](https://github.com/stelfrag))
 - Metadata cleanup improvements [\#15462](https://github.com/netdata/netdata/pull/15462) ([stelfrag](https://github.com/stelfrag))
+- Fix build with --disable-https [\#15395](https://github.com/netdata/netdata/pull/15395) ([MrZammler](https://github.com/MrZammler))
+
+## [v1.42.2](https://github.com/netdata/netdata/tree/v1.42.2) (2023-08-28)
+
+[Full Changelog](https://github.com/netdata/netdata/compare/v1.42.1...v1.42.2)
 
 ## [v1.42.1](https://github.com/netdata/netdata/tree/v1.42.1) (2023-08-16)
 
@@ -330,7 +355,6 @@
 - Add initial tooling for generating integrations.js file. [\#15406](https://github.com/netdata/netdata/pull/15406) ([Ferroin](https://github.com/Ferroin))
 - Add linux powercap metrics collector [\#15364](https://github.com/netdata/netdata/pull/15364) ([fhriley](https://github.com/fhriley))
 - systemd-journal plugin [\#15363](https://github.com/netdata/netdata/pull/15363) ([ktsaou](https://github.com/ktsaou))
-- Hash table charts [\#15323](https://github.com/netdata/netdata/pull/15323) ([thiagoftsm](https://github.com/thiagoftsm))
 
 ## [v1.41.0](https://github.com/netdata/netdata/tree/v1.41.0) (2023-07-19)
 
@@ -403,30 +427,6 @@
 - format the sdr cache filenames [\#15361](https://github.com/netdata/netdata/pull/15361) ([ktsaou](https://github.com/ktsaou))
 - fix\(freeipmi\): set sensor state on every reading [\#15360](https://github.com/netdata/netdata/pull/15360) ([ilyam8](https://github.com/ilyam8))
 - documentation update for the release of the new UI [\#15359](https://github.com/netdata/netdata/pull/15359) ([hugovalente-pm](https://github.com/hugovalente-pm))
-- Rename multi module yamls to same name but wuth prefix [\#15356](https://github.com/netdata/netdata/pull/15356) ([Ancairon](https://github.com/Ancairon))
-- Update dashboard to version v3.0.1. [\#15352](https://github.com/netdata/netdata/pull/15352) ([netdatabot](https://github.com/netdatabot))
-- Fix installation type command [\#15351](https://github.com/netdata/netdata/pull/15351) ([hugovalente-pm](https://github.com/hugovalente-pm))
-- agent alert notifications redirect [\#15350](https://github.com/netdata/netdata/pull/15350) ([ktsaou](https://github.com/ktsaou))
-- bearer protection - additions [\#15349](https://github.com/netdata/netdata/pull/15349) ([ktsaou](https://github.com/ktsaou))
-- health: fix evaluating expression with `nan` [\#15348](https://github.com/netdata/netdata/pull/15348) ([ilyam8](https://github.com/ilyam8))
-- add missing labels to freeipmi metrics csv [\#15347](https://github.com/netdata/netdata/pull/15347) ([ilyam8](https://github.com/ilyam8))
-- Fix coverity issues [\#15345](https://github.com/netdata/netdata/pull/15345) ([stelfrag](https://github.com/stelfrag))
-- Update libbpf on netdata repo [\#15343](https://github.com/netdata/netdata/pull/15343) ([thiagoftsm](https://github.com/thiagoftsm))
-- bearer improvements [\#15342](https://github.com/netdata/netdata/pull/15342) ([ktsaou](https://github.com/ktsaou))
-- Attempt to more aggressively skip CI jobs on PRs if those jobs are irrelevant to the PR. [\#15341](https://github.com/netdata/netdata/pull/15341) ([Ferroin](https://github.com/Ferroin))
-- Remove availability from required fields on metric level [\#15340](https://github.com/netdata/netdata/pull/15340) ([Ancairon](https://github.com/Ancairon))
-- docs: make the default Docker installation provide the full feature set [\#15339](https://github.com/netdata/netdata/pull/15339) ([ilyam8](https://github.com/ilyam8))
-- add internal stats metrics csv [\#15337](https://github.com/netdata/netdata/pull/15337) ([ilyam8](https://github.com/ilyam8))
-- Add missing required field in schema [\#15335](https://github.com/netdata/netdata/pull/15335) ([Ancairon](https://github.com/Ancairon))
-- Fix compilation on BSD [\#15331](https://github.com/netdata/netdata/pull/15331) ([thiagoftsm](https://github.com/thiagoftsm))
-- alerts\_transitions outputs hostnames and items statistics [\#15329](https://github.com/netdata/netdata/pull/15329) ([ktsaou](https://github.com/ktsaou))
-- Use spinlock in host and chart [\#15328](https://github.com/netdata/netdata/pull/15328) ([stelfrag](https://github.com/stelfrag))
-- multi-threaded version of freeipmi.plugin [\#15327](https://github.com/netdata/netdata/pull/15327) ([ktsaou](https://github.com/ktsaou))
-- Single module schema, add required properties [\#15326](https://github.com/netdata/netdata/pull/15326) ([Ancairon](https://github.com/Ancairon))
-- Fix coverity issue 394862 - Argument cannot be negative [\#15324](https://github.com/netdata/netdata/pull/15324) ([stelfrag](https://github.com/stelfrag))
-- Rename log Macros \(debug\) [\#15322](https://github.com/netdata/netdata/pull/15322) ([thiagoftsm](https://github.com/thiagoftsm))
-- bearer authorization API [\#15321](https://github.com/netdata/netdata/pull/15321) ([ktsaou](https://github.com/ktsaou))
-- local-listeners: use host prefix in read\_cmdline [\#15320](https://github.com/netdata/netdata/pull/15320) ([ilyam8](https://github.com/ilyam8))
 
 ## [v1.40.1](https://github.com/netdata/netdata/tree/v1.40.1) (2023-06-27)
 
diff --git a/exporting/prometheus/prometheus.c b/exporting/prometheus/prometheus.c
index 90be5d45..2d0611fd 100644
--- a/exporting/prometheus/prometheus.c
+++ b/exporting/prometheus/prometheus.c
@@ -330,16 +330,11 @@ void format_host_labels_prometheus(struct instance *instance, RRDHOST *host)
  * Format host labels for the Prometheus exporter
  * We are using a structure instead a direct buffer to expand options quickly.
  *
- * @param labels_buffer is the buffer used to add labels.
+ * @param data is the buffer used to add labels.
  */
 
-struct format_prometheus_chart_label_callback {
-    BUFFER *labels_buffer;
-    const char *labels_prefix;
-};
-
 static int format_prometheus_chart_label_callback(const char *name, const char *value, RRDLABEL_SRC ls, void *data) {
-    struct format_prometheus_chart_label_callback *d = (struct format_prometheus_chart_label_callback *)data;
+    BUFFER *wb = data;
 
     (void)ls;
 
@@ -352,26 +347,10 @@ static int format_prometheus_chart_label_callback(const char *name, const char *
     prometheus_name_copy(k, name, PROMETHEUS_ELEMENT_MAX);
     prometheus_label_copy(v, value, PROMETHEUS_ELEMENT_MAX);
 
-    if (*k && *v) {
-        buffer_sprintf(d->labels_buffer, ",%s=\"%s\"", k, v);
-    }
-    return 1;
-}
+    if (*k && *v)
+        buffer_sprintf(wb, ",%s=\"%s\"", k, v);
 
-void format_chart_labels_prometheus(struct format_prometheus_chart_label_callback *plabel,
-                                    const char *chart,
-                                    const char *family,
-                                    const char *dim,
-                                    RRDSET *st)
-{
-    if (likely(plabel->labels_buffer))
-        buffer_reset(plabel->labels_buffer);
-    else {
-        plabel->labels_buffer = buffer_create(1024, NULL);
-    }
-    buffer_sprintf(plabel->labels_buffer, "%1$schart=\"%2$s\",%1$sdimension=\"%3$s\",%1$sfamily=\"%4$s\"", plabel->labels_prefix, chart, dim, family);
-
-    rrdlabels_walkthrough_read(st->rrdlabels, format_prometheus_chart_label_callback, plabel);
+    return 1;
 }
 
 struct host_variables_callback_options {
@@ -519,9 +498,6 @@ static void generate_as_collected_prom_metric(BUFFER *wb,
                                               int prometheus_collector,
                                               DICTIONARY *chart_labels)
 {
-    struct format_prometheus_chart_label_callback local_label;
-    local_label.labels_buffer = wb;
-
     buffer_sprintf(wb, "%s_%s", p->prefix, p->context);
 
     if (!homogeneous)
@@ -534,7 +510,7 @@ static void generate_as_collected_prom_metric(BUFFER *wb,
 
     buffer_sprintf(wb, ",%sfamily=\"%s\"", p->labels_prefix, p->family);
 
-    rrdlabels_walkthrough_read(chart_labels, format_prometheus_chart_label_callback, &local_label);
+    rrdlabels_walkthrough_read(chart_labels, format_prometheus_chart_label_callback, wb);
 
     buffer_sprintf(wb, "%s} ", p->labels);
 
@@ -626,10 +602,8 @@ static void rrd_stats_api_v1_charts_allmetrics_prometheus(
     // for each chart
     RRDSET *st;
 
-    struct format_prometheus_chart_label_callback plabels = {
-        .labels_buffer = NULL,
-        .labels_prefix = instance->config.label_prefix,
-    };
+    BUFFER *plabels_buffer = buffer_create(0, NULL);
+    const char *plabels_prefix = instance->config.label_prefix;
 
     STRING *prometheus = string_strdupz("prometheus");
     rrdset_foreach_read(st, host) {
@@ -765,7 +739,9 @@ static void rrd_stats_api_v1_charts_allmetrics_prometheus(
                                 (output_options & PROMETHEUS_OUTPUT_NAMES && rd->name) ? rrddim_name(rd) : rrddim_id(rd),
                                 PROMETHEUS_ELEMENT_MAX);
 
-                            format_chart_labels_prometheus(&plabels, chart, family, dimension, st);
+                            buffer_flush(plabels_buffer);
+                            buffer_sprintf(plabels_buffer, "%1$schart=\"%2$s\",%1$sdimension=\"%3$s\",%1$sfamily=\"%4$s\"", plabels_prefix, chart, dimension, family);
+                            rrdlabels_walkthrough_read(st->rrdlabels, format_prometheus_chart_label_callback, plabels_buffer);
 
                             if (unlikely(output_options & PROMETHEUS_OUTPUT_HELP))
                                 buffer_sprintf(
@@ -792,7 +768,7 @@ static void rrd_stats_api_v1_charts_allmetrics_prometheus(
                                     context,
                                     units,
                                     suffix,
-                                    buffer_tostring(plabels.labels_buffer),
+                                    buffer_tostring(plabels_buffer),
                                     labels,
                                     value,
                                     last_time * MSEC_PER_SEC);
@@ -805,7 +781,7 @@ static void rrd_stats_api_v1_charts_allmetrics_prometheus(
                                     context,
                                     units,
                                     suffix,
-                                    buffer_tostring(plabels.labels_buffer),
+                                    buffer_tostring(plabels_buffer),
                                     labels,
                                     value);
                         }
@@ -817,6 +793,7 @@ static void rrd_stats_api_v1_charts_allmetrics_prometheus(
     }
     rrdset_foreach_done(st);
 
+    buffer_free(plabels_buffer);
     simple_pattern_free(filter);
 }
 
diff --git a/exporting/send_data.c b/exporting/send_data.c
index 3fec7320..1b13f837 100644
--- a/exporting/send_data.c
+++ b/exporting/send_data.c
@@ -103,6 +103,8 @@ void simple_connector_receive_response(int *sock, struct instance *instance)
             // failed to receive data
             if (errno != EAGAIN && errno != EWOULDBLOCK) {
                 netdata_log_error("EXPORTING: cannot receive data from '%s'.", instance->config.destination);
+                close(*sock);
+                *sock = -1;
             }
         }
 
diff --git a/libnetdata/socket/security.c b/libnetdata/socket/security.c
index c1bb7634..3a3a171e 100644
--- a/libnetdata/socket/security.c
+++ b/libnetdata/socket/security.c
@@ -234,6 +234,11 @@ ssize_t netdata_ssl_read(NETDATA_SSL *ssl, void *buf, size_t num) {
 
     if(unlikely(bytes <= 0)) {
         int err = SSL_get_error(ssl->conn, bytes);
+        if (err == SSL_ERROR_ZERO_RETURN) {
+            ssl->ssl_errno = err;
+            return 0;
+        }
+
         if (err == SSL_ERROR_WANT_READ || err == SSL_ERROR_WANT_WRITE) {
             ssl->ssl_errno = err;
             errno = EWOULDBLOCK;
diff --git a/packaging/version b/packaging/version
index 0fcb9438..5032c788 100644
--- a/packaging/version
+++ b/packaging/version
@@ -1 +1 @@
-v1.42.2
+v1.42.3