Adding upstream version 1.29.0.upstream/1.29.0

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

22 files changed, 370 insertions, 2919 deletions

diff --git a/web/api/formatters/Makefile.in b/web/api/formatters/Makefile.in
deleted file mode 100644
index eb61f962c..000000000
--- a/web/api/formatters/Makefile.in
+++ /dev/null
@@ -1,706 +0,0 @@
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diff --git a/web/api/formatters/README.md b/web/api/formatters/README.md
index 037fb5346..1fd2b3029 100644
--- a/web/api/formatters/README.md
+++ b/web/api/formatters/README.md
@@ -1,3 +1,8 @@
+<!--
+title: "Query formatting"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/web/api/formatters/README.md
+-->
+
 # Query formatting
 
 API data queries need to be formatted before returned to the caller.
@@ -7,18 +12,18 @@ The following formats are supported:
 
 | format|module|content type|description|
 |:----:|:----:|:----------:|:----------|
-| `array`|[ssv](ssv)|application/json|a JSON array|
-| `csv`|[csv](csv)|text/plain|a text table, comma separated, with a header line (dimension names) and `\r\n` at the end of the lines|
-| `csvjsonarray`|[csv](csv)|application/json|a JSON array, with each row as another array (the first row has the dimension names)|
-| `datasource`|[json](json)|application/json|a Google Visualization Provider `datasource` javascript callback|
-| `datatable`|[json](json)|application/json|a Google `datatable`|
-| `html`|[csv](csv)|text/html|an html table|
-| `json`|[json](json)|application/json|a JSON object|
-| `jsonp`|[json](json)|application/json|a JSONP javascript callback|
-| `markdown`|[csv](csv)|text/plain|a markdown table|
-| `ssv`|[ssv](ssv)|text/plain|a space separated list of values|
-| `ssvcomma`|[ssv](ssv)|text/plain|a comma separated list of values|
-| `tsv`|[csv](csv)|text/plain|a TAB delimited `csv` (MS Excel flavor)|
+| `array`|[ssv](/web/api/formatters/ssv/README.md)|application/json|a JSON array|
+| `csv`|[csv](/web/api/formatters/csv/README.md)|text/plain|a text table, comma separated, with a header line (dimension names) and `\r\n` at the end of the lines|
+| `csvjsonarray`|[csv](/web/api/formatters/csv/README.md)|application/json|a JSON array, with each row as another array (the first row has the dimension names)|
+| `datasource`|[json](/web/api/formatters/json/README.md)|application/json|a Google Visualization Provider `datasource` javascript callback|
+| `datatable`|[json](/web/api/formatters/json/README.md)|application/json|a Google `datatable`|
+| `html`|[csv](/web/api/formatters/csv/README.md)|text/html|an html table|
+| `json`|[json](/web/api/formatters/json/README.md)|application/json|a JSON object|
+| `jsonp`|[json](/web/api/formatters/json/README.md)|application/json|a JSONP javascript callback|
+| `markdown`|[csv](/web/api/formatters/csv/README.md)|text/plain|a markdown table|
+| `ssv`|[ssv](/web/api/formatters/ssv/README.md)|text/plain|a space separated list of values|
+| `ssvcomma`|[ssv](/web/api/formatters/ssv/README.md)|text/plain|a comma separated list of values|
+| `tsv`|[csv](/web/api/formatters/csv/README.md)|text/plain|a TAB delimited `csv` (MS Excel flavor)|
 
 For examples of each format, check the relative module documentation.
 
diff --git a/web/api/formatters/charts2json.c b/web/api/formatters/charts2json.c
index db3ef37ea..856ffb5eb 100644
--- a/web/api/formatters/charts2json.c
+++ b/web/api/formatters/charts2json.c
@@ -4,7 +4,7 @@
 
 // generate JSON for the /api/v1/charts API call
 
-static inline const char* get_release_channel() {
+const char* get_release_channel() {
     static int use_stable = -1;
 
     if (use_stable == -1) {
@@ -36,7 +36,7 @@ static inline const char* get_release_channel() {
     return (use_stable)?"stable":"nightly";
 }
 
-void charts2json(RRDHOST *host, BUFFER *wb) {
+void charts2json(RRDHOST *host, BUFFER *wb, int skip_volatile, int show_archived) {
     static char *custom_dashboard_info_js_filename = NULL;
     size_t c, dimensions = 0, memory = 0, alarms = 0;
     RRDSET *st;
@@ -71,12 +71,12 @@ void charts2json(RRDHOST *host, BUFFER *wb) {
     c = 0;
     rrdhost_rdlock(host);
     rrdset_foreach_read(st, host) {
-        if(rrdset_is_available_for_viewers(st)) {
+        if ((!show_archived && rrdset_is_available_for_viewers(st)) || (show_archived && rrdset_is_archived(st))) {
             if(c) buffer_strcat(wb, ",");
             buffer_strcat(wb, "\n\t\t\"");
             buffer_strcat(wb, st->id);
             buffer_strcat(wb, "\": ");
-            rrdset2json(st, wb, &dimensions, &memory);
+            rrdset2json(st, wb, &dimensions, &memory, skip_volatile);
 
             c++;
             st->last_accessed_time = now;
@@ -111,7 +111,7 @@ void charts2json(RRDHOST *host, BUFFER *wb) {
         size_t found = 0;
         RRDHOST *h;
         rrdhost_foreach_read(h) {
-            if(!rrdhost_should_be_removed(h, host, now)) {
+            if(!rrdhost_should_be_removed(h, host, now) && !rrdhost_flag_check(h, RRDHOST_FLAG_ARCHIVED)) {
                 buffer_sprintf(wb
                                , "%s\n\t\t{"
                                  "\n\t\t\t\"hostname\": \"%s\""
diff --git a/web/api/formatters/charts2json.h b/web/api/formatters/charts2json.h
index 926e76d50..2d8cce310 100644
--- a/web/api/formatters/charts2json.h
+++ b/web/api/formatters/charts2json.h
@@ -5,7 +5,8 @@
 
 #include "rrd2json.h"
 
-extern void charts2json(RRDHOST *host, BUFFER *wb);
+extern void charts2json(RRDHOST *host, BUFFER *wb, int skip_volatile, int show_archived);
 extern void chartcollectors2json(RRDHOST *host, BUFFER *wb);
+extern const char* get_release_channel();
 
 #endif //NETDATA_API_FORMATTER_CHARTS2JSON_H
diff --git a/web/api/formatters/csv/Makefile.in b/web/api/formatters/csv/Makefile.in
deleted file mode 100644
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+++ /dev/null
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diff --git a/web/api/formatters/csv/README.md b/web/api/formatters/csv/README.md
index 0d16fc4ec..2a859e249 100644
--- a/web/api/formatters/csv/README.md
+++ b/web/api/formatters/csv/README.md
@@ -1,6 +1,11 @@
+<!--
+title: "CSV formatter"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/web/api/formatters/csv/README.md
+-->
+
 # CSV formatter
 
-The CSV formatter presents [results of database queries](../../queries) in the following formats:
+The CSV formatter presents [results of database queries](/web/api/queries/README.md) in the following formats:
 
 | format|content type|description|
 | :----:|:----------:|:----------|
diff --git a/web/api/formatters/csv/csv.c b/web/api/formatters/csv/csv.c
index 53bf29828..da0a6b583 100644
--- a/web/api/formatters/csv/csv.c
+++ b/web/api/formatters/csv/csv.c
@@ -3,7 +3,7 @@
 #include "libnetdata/libnetdata.h"
 #include "csv.h"
 
-void rrdr2csv(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS options, const char *startline, const char *separator, const char *endline, const char *betweenlines) {
+void rrdr2csv(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS options, const char *startline, const char *separator, const char *endline, const char *betweenlines, RRDDIM *temp_rd) {
     rrdset_check_rdlock(r->st);
 
     //info("RRD2CSV(): %s: BEGIN", r->st->id);
@@ -11,7 +11,7 @@ void rrdr2csv(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS options, const
     RRDDIM *d;
 
     // print the csv header
-    for(c = 0, i = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
+    for(c = 0, i = 0, d = temp_rd?temp_rd:r->st->dimensions; d && c < r->d ;c++, d = d->next) {
         if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
         if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
 
@@ -31,7 +31,7 @@ void rrdr2csv(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS options, const
 
     if(format == DATASOURCE_CSV_MARKDOWN) {
         // print the --- line after header
-        for(c = 0, i = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
+        for(c = 0, i = 0, d = temp_rd?temp_rd:r->st->dimensions; d && c < r->d ;c++, d = d->next) {
             if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
             if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
 
@@ -89,7 +89,7 @@ void rrdr2csv(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS options, const
         int set_min_max = 0;
         if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
             total = 0;
-            for(c = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
+            for(c = 0, d = temp_rd?temp_rd:r->st->dimensions; d && c < r->d ;c++, d = d->next) {
                 calculated_number n = cn[c];
 
                 if(likely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
@@ -103,7 +103,7 @@ void rrdr2csv(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS options, const
         }
 
         // for each dimension
-        for(c = 0, d = r->st->dimensions; d && c < r->d ;c++, d = d->next) {
+        for(c = 0, d = temp_rd?temp_rd:r->st->dimensions; d && c < r->d ;c++, d = d->next) {
             if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
             if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
 
diff --git a/web/api/formatters/csv/csv.h b/web/api/formatters/csv/csv.h
index a89742d34..cf6020de4 100644
--- a/web/api/formatters/csv/csv.h
+++ b/web/api/formatters/csv/csv.h
@@ -5,7 +5,7 @@
 
 #include "web/api/queries/rrdr.h"
 
-extern void rrdr2csv(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS options, const char *startline, const char *separator, const char *endline, const char *betweenlines);
+extern void rrdr2csv(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS options, const char *startline, const char *separator, const char *endline, const char *betweenlines, RRDDIM *temp_rd);
 
 #include "../rrd2json.h"
 
diff --git a/web/api/formatters/json/Makefile.in b/web/api/formatters/json/Makefile.in
deleted file mode 100644
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+++ /dev/null
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-	  $(AUTOMAKE) --gnu web/api/formatters/json/Makefile
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-	  *config.status*) \
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diff --git a/web/api/formatters/json/README.md b/web/api/formatters/json/README.md
index 2bd37bc7d..685a3f2df 100644
--- a/web/api/formatters/json/README.md
+++ b/web/api/formatters/json/README.md
@@ -1,6 +1,11 @@
+<!--
+title: "JSON formatter"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/web/api/formatters/json/README.md
+-->
+
 # JSON formatter
 
-The CSV formatter presents [results of database queries](../../queries) in the following formats:
+The CSV formatter presents [results of database queries](/web/api/queries/README.md) in the following formats:
 
 | format       | content type     | description|
 |:----:|:----------:|:----------|
diff --git a/web/api/formatters/json/json.c b/web/api/formatters/json/json.c
index 66b3b9c83..f28eb5738 100644
--- a/web/api/formatters/json/json.c
+++ b/web/api/formatters/json/json.c
@@ -5,7 +5,7 @@
 #define JSON_DATES_JS 1
 #define JSON_DATES_TIMESTAMP 2
 
-void rrdr2json(RRDR *r, BUFFER *wb, RRDR_OPTIONS options, int datatable) {
+void rrdr2json(RRDR *r, BUFFER *wb, RRDR_OPTIONS options, int datatable, RRDDIM *temp_rd) {
     rrdset_check_rdlock(r->st);
 
     //info("RRD2JSON(): %s: BEGIN", r->st->id);
@@ -94,12 +94,14 @@ void rrdr2json(RRDR *r, BUFFER *wb, RRDR_OPTIONS options, int datatable) {
     RRDDIM *rd;
 
     // print the header lines
-    for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+    for(c = 0, i = 0, rd = temp_rd?temp_rd:r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
         if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
         if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
 
         buffer_strcat(wb, pre_label);
         buffer_strcat(wb, rd->name);
+//        buffer_strcat(wb, ".");
+//        buffer_strcat(wb, rd->rrdset->name);
         buffer_strcat(wb, post_label);
         i++;
     }
@@ -154,7 +156,7 @@ void rrdr2json(RRDR *r, BUFFER *wb, RRDR_OPTIONS options, int datatable) {
             if(row_annotations) {
                 // google supports one annotation per row
                 int annotation_found = 0;
-                for(c = 0, rd = r->st->dimensions; rd ;c++, rd = rd->next) {
+                for(c = 0, rd = temp_rd?temp_rd:r->st->dimensions; rd ;c++, rd = rd->next) {
                     if(unlikely(!(r->od[c] & RRDR_DIMENSION_SELECTED))) continue;
 
                     if(co[c] & RRDR_VALUE_RESET) {
@@ -185,7 +187,7 @@ void rrdr2json(RRDR *r, BUFFER *wb, RRDR_OPTIONS options, int datatable) {
         int set_min_max = 0;
         if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
             total = 0;
-            for(c = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+            for(c = 0, rd = temp_rd?temp_rd:r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
                 calculated_number n = cn[c];
 
                 if(likely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
@@ -199,7 +201,7 @@ void rrdr2json(RRDR *r, BUFFER *wb, RRDR_OPTIONS options, int datatable) {
         }
 
         // for each dimension
-        for(c = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+        for(c = 0, rd = temp_rd?temp_rd:r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
             if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
             if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
 
diff --git a/web/api/formatters/json/json.h b/web/api/formatters/json/json.h
index 01363ce01..6d73a3ffe 100644
--- a/web/api/formatters/json/json.h
+++ b/web/api/formatters/json/json.h
@@ -5,6 +5,6 @@
 
 #include "../rrd2json.h"
 
-extern void rrdr2json(RRDR *r, BUFFER *wb, RRDR_OPTIONS options, int datatable);
+extern void rrdr2json(RRDR *r, BUFFER *wb, RRDR_OPTIONS options, int datatable, RRDDIM *temp_rd);
 
 #endif //NETDATA_API_FORMATTER_JSON_H
diff --git a/web/api/formatters/json_wrapper.c b/web/api/formatters/json_wrapper.c
index 5ef2caf10..cf4f1099a 100644
--- a/web/api/formatters/json_wrapper.c
+++ b/web/api/formatters/json_wrapper.c
@@ -2,7 +2,7 @@
 
 #include "json_wrapper.h"
 
-void rrdr_json_wrapper_begin(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS options, int string_value) {
+void rrdr_json_wrapper_begin(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS options, int string_value, RRDDIM *temp_rd, char *chart_label_key) {
     rrdset_check_rdlock(r->st);
 
     long rows = rrdr_rows(r);
@@ -22,6 +22,7 @@ void rrdr_json_wrapper_begin(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS
         sq[0] = '"';
     }
 
+    rrdset_rdlock(r->st);
     buffer_sprintf(wb, "{\n"
                        "   %sapi%s: 1,\n"
                        "   %sid%s: %s%s%s,\n"
@@ -34,17 +35,18 @@ void rrdr_json_wrapper_begin(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS
                        "   %safter%s: %u,\n"
                        "   %sdimension_names%s: ["
                    , kq, kq
-                   , kq, kq, sq, r->st->id, sq
-                   , kq, kq, sq, r->st->name, sq
+                   , kq, kq, sq, temp_rd?r->st->context:r->st->id, sq
+                   , kq, kq, sq, temp_rd?r->st->context:r->st->name, sq
                    , kq, kq, r->update_every
                    , kq, kq, r->st->update_every
-                   , kq, kq, (uint32_t)rrdset_first_entry_t(r->st)
-                   , kq, kq, (uint32_t)rrdset_last_entry_t(r->st)
+                   , kq, kq, (uint32_t)rrdset_first_entry_t_nolock(r->st)
+                   , kq, kq, (uint32_t)rrdset_last_entry_t_nolock(r->st)
                    , kq, kq, (uint32_t)r->before
                    , kq, kq, (uint32_t)r->after
                    , kq, kq);
+    rrdset_unlock(r->st);
 
-    for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+    for(c = 0, i = 0, rd = temp_rd?temp_rd:r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
         if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
         if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
 
@@ -68,7 +70,7 @@ void rrdr_json_wrapper_begin(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS
                        "   %sdimension_ids%s: ["
                    , kq, kq);
 
-    for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+    for(c = 0, i = 0, rd = temp_rd?temp_rd:r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
         if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
         if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
 
@@ -84,12 +86,85 @@ void rrdr_json_wrapper_begin(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS
         buffer_strcat(wb, "no data");
         buffer_strcat(wb, sq);
     }
+    buffer_strcat(wb, "],\n");
+
+    // Composite charts
+    if (temp_rd) {
+        buffer_sprintf(
+            wb,
+            "   %schart_ids%s: [",
+            kq, kq);
+
+        for (c = 0, i = 0, rd = temp_rd ; rd && c < r->d; c++, rd = rd->next) {
+            if (unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN))
+                continue;
+            if (unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO)))
+                continue;
+
+            if (i)
+                buffer_strcat(wb, ", ");
+            buffer_strcat(wb, sq);
+            buffer_strcat(wb, rd->rrdset->name);
+            buffer_strcat(wb, sq);
+            i++;
+        }
+        if (!i) {
+            rows = 0;
+            buffer_strcat(wb, sq);
+            buffer_strcat(wb, "no data");
+            buffer_strcat(wb, sq);
+        }
+        buffer_strcat(wb, "],\n");
+        if (chart_label_key) {
+            buffer_sprintf(wb, "   %schart_labels%s: { ", kq, kq);
+
+            SIMPLE_PATTERN *pattern = simple_pattern_create(chart_label_key, ",|\t\r\n\f\v", SIMPLE_PATTERN_EXACT);
+            SIMPLE_PATTERN *original_pattern = pattern;
+            char *label_key = NULL;
+            int keys = 0;
+            while (pattern && (label_key = simple_pattern_iterate(&pattern))) {
+                uint32_t key_hash = simple_hash(label_key);
+                struct label *current_label;
+
+                if (keys)
+                    buffer_strcat(wb, ", ");
+                buffer_sprintf(wb, "%s%s%s : [", kq, label_key, kq);
+                keys++;
+
+                for (c = 0, i = 0, rd = temp_rd; rd && c < r->d; c++, rd = rd->next) {
+                    if (unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN))
+                        continue;
+                    if (unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO)))
+                        continue;
+                    if (i)
+                        buffer_strcat(wb, ", ");
+
+                    current_label = rrdset_lookup_label_key(rd->rrdset, label_key, key_hash);
+                    if (current_label) {
+                        buffer_strcat(wb, sq);
+                        buffer_strcat(wb, current_label->value);
+                        buffer_strcat(wb, sq);
+                    } else
+                        buffer_strcat(wb, "null");
+                    i++;
+                }
+                if (!i) {
+                    rows = 0;
+                    buffer_strcat(wb, sq);
+                    buffer_strcat(wb, "no data");
+                    buffer_strcat(wb, sq);
+                }
+                buffer_strcat(wb, "]");
+            }
+            buffer_strcat(wb, "},\n");
+            simple_pattern_free(original_pattern);
+        }
+    }
 
-    buffer_sprintf(wb, "],\n"
-                       "   %slatest_values%s: ["
+    buffer_sprintf(wb, "   %slatest_values%s: ["
                    , kq, kq);
 
-    for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+    for(c = 0, i = 0, rd = temp_rd?temp_rd:r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
         if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
         if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
 
@@ -125,7 +200,7 @@ void rrdr_json_wrapper_begin(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS
 
         if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
             total = 0;
-            for(c = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+            for(c = 0, rd = temp_rd?temp_rd:r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
                 calculated_number *cn = &r->v[ (rrdr_rows(r) - 1) * r->d ];
                 calculated_number n = cn[c];
 
@@ -138,7 +213,7 @@ void rrdr_json_wrapper_begin(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS
             if(total == 0) total = 1;
         }
 
-        for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
+        for(c = 0, i = 0, rd = temp_rd?temp_rd:r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
             if(unlikely(r->od[c] & RRDR_DIMENSION_HIDDEN)) continue;
             if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_DIMENSION_NONZERO))) continue;
 
diff --git a/web/api/formatters/json_wrapper.h b/web/api/formatters/json_wrapper.h
index 7cb7d3453..d48d5d1ae 100644
--- a/web/api/formatters/json_wrapper.h
+++ b/web/api/formatters/json_wrapper.h
@@ -5,7 +5,7 @@
 
 #include "rrd2json.h"
 
-extern void rrdr_json_wrapper_begin(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS options, int string_value);
+extern void rrdr_json_wrapper_begin(RRDR *r, BUFFER *wb, uint32_t format, RRDR_OPTIONS options, int string_value, RRDDIM *temp_rd, char *chart_key);
 extern void rrdr_json_wrapper_end(RRDR *r, BUFFER *wb, uint32_t format, uint32_t options, int string_value);
 
 #endif //NETDATA_API_FORMATTER_JSON_WRAPPER_H
diff --git a/web/api/formatters/rrd2json.c b/web/api/formatters/rrd2json.c
index 17b1a301b..9168f76eb 100644
--- a/web/api/formatters/rrd2json.c
+++ b/web/api/formatters/rrd2json.c
@@ -2,8 +2,79 @@
 
 #include "web/api/web_api_v1.h"
 
+static inline void free_temp_rrddim(RRDDIM *temp_rd)
+{
+    if (unlikely(!temp_rd))
+        return;
+
+    RRDDIM *t;
+    while (temp_rd) {
+        t = temp_rd->next;
+        freez((char *)temp_rd->id);
+        freez((char *)temp_rd->name);
+#ifdef ENABLE_DBENGINE
+        if (temp_rd->rrd_memory_mode == RRD_MEMORY_MODE_DBENGINE)
+            freez(temp_rd->state->metric_uuid);
+#endif
+        freez(temp_rd->state);
+        freez(temp_rd);
+        temp_rd = t;
+    }
+}
+
+void free_context_param_list(struct context_param **param_list)
+{
+    if (unlikely(!param_list || !*param_list))
+        return;
+
+    free_temp_rrddim(((*param_list)->rd));
+    freez((*param_list));
+    *param_list = NULL;
+}
+
+void build_context_param_list(struct context_param **param_list, RRDSET *st)
+{
+    if (unlikely(!param_list || !st))
+        return;
+
+    if (unlikely(!(*param_list))) {
+        *param_list = mallocz(sizeof(struct context_param));
+        (*param_list)->first_entry_t = LONG_MAX;
+        (*param_list)->last_entry_t = 0;
+        (*param_list)->rd = NULL;
+    }
+
+    RRDDIM *rd1;
+    st->last_accessed_time = now_realtime_sec();
+    rrdset_rdlock(st);
+
+    (*param_list)->first_entry_t = MIN((*param_list)->first_entry_t, rrdset_first_entry_t_nolock(st));
+    (*param_list)->last_entry_t  = MAX((*param_list)->last_entry_t, rrdset_last_entry_t_nolock(st));
+
+    rrddim_foreach_read(rd1, st) {
+        RRDDIM *rd = mallocz(rd1->memsize);
+        memcpy(rd, rd1, rd1->memsize);
+        rd->id = strdupz(rd1->id);
+        rd->name = strdupz(rd1->name);
+        rd->state = mallocz(sizeof(*rd->state));
+        memcpy(rd->state, rd1->state, sizeof(*rd->state));
+        memcpy(&rd->state->collect_ops, &rd1->state->collect_ops, sizeof(struct rrddim_collect_ops));
+        memcpy(&rd->state->query_ops, &rd1->state->query_ops, sizeof(struct rrddim_query_ops));
+#ifdef ENABLE_DBENGINE
+        if (rd->rrd_memory_mode == RRD_MEMORY_MODE_DBENGINE) {
+            rd->state->metric_uuid = mallocz(sizeof(uuid_t));
+            uuid_copy(*rd->state->metric_uuid, *rd1->state->metric_uuid);
+        }
+#endif
+        rd->next = (*param_list)->rd;
+        (*param_list)->rd = rd;
+    }
+
+    rrdset_unlock(st);
+}
+
 void rrd_stats_api_v1_chart(RRDSET *st, BUFFER *wb) {
-    rrdset2json(st, wb, NULL, NULL);
+    rrdset2json(st, wb, NULL, NULL, 0);
 }
 
 void rrdr_buffer_print_format(BUFFER *wb, uint32_t format)  {
@@ -69,7 +140,9 @@ int rrdset2value_api_v1(
         , time_t *db_before
         , int *value_is_null
 ) {
-    RRDR *r = rrd2rrdr(st, points, after, before, group_method, group_time, options, dimensions);
+
+    RRDR *r = rrd2rrdr(st, points, after, before, group_method, group_time, options, dimensions, NULL);
+
     if(!r) {
         if(value_is_null) *value_is_null = 1;
         return HTTP_RESP_INTERNAL_SERVER_ERROR;
@@ -114,10 +187,15 @@ int rrdset2anything_api_v1(
         , long group_time
         , uint32_t options
         , time_t *latest_timestamp
+        , struct context_param *context_param_list
+        , char *chart_label_key
 ) {
-    st->last_accessed_time = now_realtime_sec();
+    time_t last_accessed_time = now_realtime_sec();
+    st->last_accessed_time = last_accessed_time;
+
+    RRDDIM *temp_rd = context_param_list ? context_param_list->rd : NULL;
 
-    RRDR *r = rrd2rrdr(st, points, after, before, group_method, group_time, options, dimensions?buffer_tostring(dimensions):NULL);
+    RRDR *r = rrd2rrdr(st, points, after, before, group_method, group_time, options, dimensions?buffer_tostring(dimensions):NULL, context_param_list);
     if(!r) {
         buffer_strcat(wb, "Cannot generate output with these parameters on this chart.");
         return HTTP_RESP_INTERNAL_SERVER_ERROR;
@@ -135,7 +213,7 @@ int rrdset2anything_api_v1(
     case DATASOURCE_SSV:
         if(options & RRDR_OPTION_JSON_WRAP) {
             wb->contenttype = CT_APPLICATION_JSON;
-            rrdr_json_wrapper_begin(r, wb, format, options, 1);
+            rrdr_json_wrapper_begin(r, wb, format, options, 1, temp_rd, chart_label_key);
             rrdr2ssv(r, wb, options, "", " ", "");
             rrdr_json_wrapper_end(r, wb, format, options, 1);
         }
@@ -148,7 +226,7 @@ int rrdset2anything_api_v1(
     case DATASOURCE_SSV_COMMA:
         if(options & RRDR_OPTION_JSON_WRAP) {
             wb->contenttype = CT_APPLICATION_JSON;
-            rrdr_json_wrapper_begin(r, wb, format, options, 1);
+            rrdr_json_wrapper_begin(r, wb, format, options, 1, temp_rd, chart_label_key);
             rrdr2ssv(r, wb, options, "", ",", "");
             rrdr_json_wrapper_end(r, wb, format, options, 1);
         }
@@ -161,7 +239,7 @@ int rrdset2anything_api_v1(
     case DATASOURCE_JS_ARRAY:
         if(options & RRDR_OPTION_JSON_WRAP) {
             wb->contenttype = CT_APPLICATION_JSON;
-            rrdr_json_wrapper_begin(r, wb, format, options, 0);
+            rrdr_json_wrapper_begin(r, wb, format, options, 0, temp_rd, chart_label_key);
             rrdr2ssv(r, wb, options, "[", ",", "]");
             rrdr_json_wrapper_end(r, wb, format, options, 0);
         }
@@ -174,42 +252,42 @@ int rrdset2anything_api_v1(
     case DATASOURCE_CSV:
         if(options & RRDR_OPTION_JSON_WRAP) {
             wb->contenttype = CT_APPLICATION_JSON;
-            rrdr_json_wrapper_begin(r, wb, format, options, 1);
-            rrdr2csv(r, wb, format, options, "", ",", "\\n", "");
+            rrdr_json_wrapper_begin(r, wb, format, options, 1, temp_rd, chart_label_key);
+            rrdr2csv(r, wb, format, options, "", ",", "\\n", "", temp_rd);
             rrdr_json_wrapper_end(r, wb, format, options, 1);
         }
         else {
             wb->contenttype = CT_TEXT_PLAIN;
-            rrdr2csv(r, wb, format, options, "", ",", "\r\n", "");
+            rrdr2csv(r, wb, format, options, "", ",", "\r\n", "", temp_rd);
         }
         break;
 
     case DATASOURCE_CSV_MARKDOWN:
         if(options & RRDR_OPTION_JSON_WRAP) {
             wb->contenttype = CT_APPLICATION_JSON;
-            rrdr_json_wrapper_begin(r, wb, format, options, 1);
-            rrdr2csv(r, wb, format, options, "", "|", "\\n", "");
+            rrdr_json_wrapper_begin(r, wb, format, options, 1, temp_rd, chart_label_key);
+            rrdr2csv(r, wb, format, options, "", "|", "\\n", "", temp_rd);
             rrdr_json_wrapper_end(r, wb, format, options, 1);
         }
         else {
             wb->contenttype = CT_TEXT_PLAIN;
-            rrdr2csv(r, wb, format, options, "", "|", "\r\n", "");
+            rrdr2csv(r, wb, format, options, "", "|", "\r\n", "", temp_rd);
         }
         break;
 
     case DATASOURCE_CSV_JSON_ARRAY:
         wb->contenttype = CT_APPLICATION_JSON;
         if(options & RRDR_OPTION_JSON_WRAP) {
-            rrdr_json_wrapper_begin(r, wb, format, options, 0);
+            rrdr_json_wrapper_begin(r, wb, format, options, 0, temp_rd, chart_label_key);
             buffer_strcat(wb, "[\n");
-            rrdr2csv(r, wb, format, options + RRDR_OPTION_LABEL_QUOTES, "[", ",", "]", ",\n");
+            rrdr2csv(r, wb, format, options + RRDR_OPTION_LABEL_QUOTES, "[", ",", "]", ",\n", temp_rd);
             buffer_strcat(wb, "\n]");
             rrdr_json_wrapper_end(r, wb, format, options, 0);
         }
         else {
             wb->contenttype = CT_APPLICATION_JSON;
             buffer_strcat(wb, "[\n");
-            rrdr2csv(r, wb, format, options + RRDR_OPTION_LABEL_QUOTES, "[", ",", "]", ",\n");
+            rrdr2csv(r, wb, format, options + RRDR_OPTION_LABEL_QUOTES, "[", ",", "]", ",\n", temp_rd);
             buffer_strcat(wb, "\n]");
         }
         break;
@@ -217,29 +295,29 @@ int rrdset2anything_api_v1(
     case DATASOURCE_TSV:
         if(options & RRDR_OPTION_JSON_WRAP) {
             wb->contenttype = CT_APPLICATION_JSON;
-            rrdr_json_wrapper_begin(r, wb, format, options, 1);
-            rrdr2csv(r, wb, format, options, "", "\t", "\\n", "");
+            rrdr_json_wrapper_begin(r, wb, format, options, 1, temp_rd, chart_label_key);
+            rrdr2csv(r, wb, format, options, "", "\t", "\\n", "", temp_rd);
             rrdr_json_wrapper_end(r, wb, format, options, 1);
         }
         else {
             wb->contenttype = CT_TEXT_PLAIN;
-            rrdr2csv(r, wb, format, options, "", "\t", "\r\n", "");
+            rrdr2csv(r, wb, format, options, "", "\t", "\r\n", "", temp_rd);
         }
         break;
 
     case DATASOURCE_HTML:
         if(options & RRDR_OPTION_JSON_WRAP) {
             wb->contenttype = CT_APPLICATION_JSON;
-            rrdr_json_wrapper_begin(r, wb, format, options, 1);
+            rrdr_json_wrapper_begin(r, wb, format, options, 1, temp_rd, chart_label_key);
             buffer_strcat(wb, "<html>\\n<center>\\n<table border=\\\"0\\\" cellpadding=\\\"5\\\" cellspacing=\\\"5\\\">\\n");
-            rrdr2csv(r, wb, format, options, "<tr><td>", "</td><td>", "</td></tr>\\n", "");
+            rrdr2csv(r, wb, format, options, "<tr><td>", "</td><td>", "</td></tr>\\n", "", temp_rd);
             buffer_strcat(wb, "</table>\\n</center>\\n</html>\\n");
             rrdr_json_wrapper_end(r, wb, format, options, 1);
         }
         else {
             wb->contenttype = CT_TEXT_HTML;
             buffer_strcat(wb, "<html>\n<center>\n<table border=\"0\" cellpadding=\"5\" cellspacing=\"5\">\n");
-            rrdr2csv(r, wb, format, options, "<tr><td>", "</td><td>", "</td></tr>\n", "");
+            rrdr2csv(r, wb, format, options, "<tr><td>", "</td><td>", "</td></tr>\n", "", temp_rd);
             buffer_strcat(wb, "</table>\n</center>\n</html>\n");
         }
         break;
@@ -248,9 +326,9 @@ int rrdset2anything_api_v1(
         wb->contenttype = CT_APPLICATION_X_JAVASCRIPT;
 
         if(options & RRDR_OPTION_JSON_WRAP)
-            rrdr_json_wrapper_begin(r, wb, format, options, 0);
+            rrdr_json_wrapper_begin(r, wb, format, options, 0, temp_rd, chart_label_key);
 
-        rrdr2json(r, wb, options, 1);
+        rrdr2json(r, wb, options, 1, temp_rd);
 
         if(options & RRDR_OPTION_JSON_WRAP)
             rrdr_json_wrapper_end(r, wb, format, options, 0);
@@ -260,9 +338,9 @@ int rrdset2anything_api_v1(
         wb->contenttype = CT_APPLICATION_JSON;
 
         if(options & RRDR_OPTION_JSON_WRAP)
-            rrdr_json_wrapper_begin(r, wb, format, options, 0);
+            rrdr_json_wrapper_begin(r, wb, format, options, 0, temp_rd, chart_label_key);
 
-        rrdr2json(r, wb, options, 1);
+        rrdr2json(r, wb, options, 1, temp_rd);
 
         if(options & RRDR_OPTION_JSON_WRAP)
             rrdr_json_wrapper_end(r, wb, format, options, 0);
@@ -271,9 +349,9 @@ int rrdset2anything_api_v1(
     case DATASOURCE_JSONP:
         wb->contenttype = CT_APPLICATION_X_JAVASCRIPT;
         if(options & RRDR_OPTION_JSON_WRAP)
-            rrdr_json_wrapper_begin(r, wb, format, options, 0);
+            rrdr_json_wrapper_begin(r, wb, format, options, 0, temp_rd, chart_label_key);
 
-        rrdr2json(r, wb, options, 0);
+        rrdr2json(r, wb, options, 0, temp_rd);
 
         if(options & RRDR_OPTION_JSON_WRAP)
             rrdr_json_wrapper_end(r, wb, format, options, 0);
@@ -284,9 +362,9 @@ int rrdset2anything_api_v1(
         wb->contenttype = CT_APPLICATION_JSON;
 
         if(options & RRDR_OPTION_JSON_WRAP)
-            rrdr_json_wrapper_begin(r, wb, format, options, 0);
+            rrdr_json_wrapper_begin(r, wb, format, options, 0, temp_rd, chart_label_key);
 
-        rrdr2json(r, wb, options, 0);
+        rrdr2json(r, wb, options, 0, temp_rd);
 
         if(options & RRDR_OPTION_JSON_WRAP)
             rrdr_json_wrapper_end(r, wb, format, options, 0);
diff --git a/web/api/formatters/rrd2json.h b/web/api/formatters/rrd2json.h
index 8fce4ef7b..1f929c494 100644
--- a/web/api/formatters/rrd2json.h
+++ b/web/api/formatters/rrd2json.h
@@ -65,6 +65,8 @@ extern int rrdset2anything_api_v1(
         , long group_time
         , uint32_t options
         , time_t *latest_timestamp
+        , struct context_param *context_param_list
+        , char *chart_label_key
 );
 
 extern int rrdset2value_api_v1(
@@ -83,4 +85,7 @@ extern int rrdset2value_api_v1(
         , int *value_is_null
 );
 
+extern void build_context_param_list(struct context_param **param_list, RRDSET *st);
+extern void free_context_param_list(struct context_param **param_list);
+
 #endif /* NETDATA_RRD2JSON_H */
diff --git a/web/api/formatters/rrdset2json.c b/web/api/formatters/rrdset2json.c
index 4d9139927..5482881e0 100644
--- a/web/api/formatters/rrdset2json.c
+++ b/web/api/formatters/rrdset2json.c
@@ -2,13 +2,43 @@
 
 #include "rrdset2json.h"
 
+void chart_labels2json(RRDSET *st, BUFFER *wb, size_t indentation)
+{
+    char tabs[11];
+    struct label_index *labels = &st->state->labels;
+
+    if (indentation > 10)
+        indentation = 10;
+
+    tabs[0] = '\0';
+    while (indentation) {
+        strcat(tabs, "\t");
+        indentation--;
+    }
+
+    int count = 0;
+    netdata_rwlock_rdlock(&labels->labels_rwlock);
+    for (struct label *label = labels->head; label; label = label->next) {
+        if(count > 0) buffer_strcat(wb, ",\n");
+        buffer_strcat(wb, tabs);
+
+        char value[CONFIG_MAX_VALUE * 2 + 1];
+        sanitize_json_string(value, label->value, CONFIG_MAX_VALUE * 2);
+        buffer_sprintf(wb, "\"%s\": \"%s\"", label->key, value);
+
+        count++;
+    }
+    buffer_strcat(wb, "\n");
+    netdata_rwlock_unlock(&labels->labels_rwlock);
+}
+
 // generate JSON for the /api/v1/chart API call
 
-void rrdset2json(RRDSET *st, BUFFER *wb, size_t *dimensions_count, size_t *memory_used) {
+void rrdset2json(RRDSET *st, BUFFER *wb, size_t *dimensions_count, size_t *memory_used, int skip_volatile) {
     rrdset_rdlock(st);
 
-    time_t first_entry_t = rrdset_first_entry_t(st);
-    time_t last_entry_t  = rrdset_last_entry_t(st);
+    time_t first_entry_t = rrdset_first_entry_t_nolock(st);
+    time_t last_entry_t  = rrdset_last_entry_t_nolock(st);
 
     buffer_sprintf(wb,
             "\t\t{\n"
@@ -25,30 +55,44 @@ void rrdset2json(RRDSET *st, BUFFER *wb, size_t *dimensions_count, size_t *memor
             "\t\t\t\"units\": \"%s\",\n"
             "\t\t\t\"data_url\": \"/api/v1/data?chart=%s\",\n"
             "\t\t\t\"chart_type\": \"%s\",\n"
-            "\t\t\t\"duration\": %ld,\n"
-            "\t\t\t\"first_entry\": %ld,\n"
-            "\t\t\t\"last_entry\": %ld,\n"
-            "\t\t\t\"update_every\": %d,\n"
-            "\t\t\t\"dimensions\": {\n"
-                   , st->id
-                   , st->name
-                   , st->type
-                   , st->family
-                   , st->context
-                   , st->title, st->name
-                   , st->priority
-                   , st->plugin_name?st->plugin_name:""
-                   , st->module_name?st->module_name:""
-                   , rrdset_flag_check(st, RRDSET_FLAG_ENABLED)?"true":"false"
-                   , st->units
-                   , st->name
-                   , rrdset_type_name(st->chart_type)
-                   , last_entry_t - first_entry_t + st->update_every//st->entries * st->update_every
-                   , first_entry_t//rrdset_first_entry_t(st)
-                   , last_entry_t//rrdset_last_entry_t(st)
-                   , st->update_every
+                    , st->id
+                    , st->name
+                    , st->type
+                    , st->family
+                    , st->context
+                    , st->title, st->name
+                    , st->priority
+                    , st->plugin_name?st->plugin_name:""
+                    , st->module_name?st->module_name:""
+                    , rrdset_flag_check(st, RRDSET_FLAG_ENABLED)?"true":"false"
+                    , st->units
+                    , st->name
+                    , rrdset_type_name(st->chart_type)
+    );
+
+    if (likely(!skip_volatile))
+        buffer_sprintf(wb,
+                "\t\t\t\"duration\": %ld,\n"
+            , last_entry_t - first_entry_t + st->update_every//st->entries * st->update_every
+        );
+
+    buffer_sprintf(wb,
+                "\t\t\t\"first_entry\": %ld,\n"
+        , first_entry_t //rrdset_first_entry_t(st)
     );
 
+    if (likely(!skip_volatile))
+        buffer_sprintf(wb,
+                "\t\t\t\"last_entry\": %ld,\n"
+            , last_entry_t//rrdset_last_entry_t(st)
+        );
+
+    buffer_sprintf(wb,
+                "\t\t\t\"update_every\": %d,\n"
+                "\t\t\t\"dimensions\": {\n"
+                       , st->update_every
+        );
+
     unsigned long memory = st->memsize;
 
     size_t dimensions = 0;
@@ -58,14 +102,14 @@ void rrdset2json(RRDSET *st, BUFFER *wb, size_t *dimensions_count, size_t *memor
 
         memory += rd->memsize;
 
-        buffer_sprintf(
-                wb
-                , "%s"
-                  "\t\t\t\t\"%s\": { \"name\": \"%s\" }"
-                , dimensions ? ",\n" : ""
-                , rd->id
-                , rd->name
-        );
+        if (dimensions)
+            buffer_strcat(wb, ",\n\t\t\t\t\"");
+        else
+            buffer_strcat(wb, "\t\t\t\t\"");
+        buffer_strcat_jsonescape(wb, rd->id);
+        buffer_strcat(wb, "\": { \"name\": \"");
+        buffer_strcat_jsonescape(wb, rd->name);
+        buffer_strcat(wb, "\" }");
 
         dimensions++;
     }
@@ -81,33 +125,36 @@ void rrdset2json(RRDSET *st, BUFFER *wb, size_t *dimensions_count, size_t *memor
     buffer_strcat(wb, ",\n\t\t\t\"red\": ");
     buffer_rrd_value(wb, st->red);
 
-    buffer_strcat(wb, ",\n\t\t\t\"alarms\": {\n");
-    size_t alarms = 0;
-    RRDCALC *rc;
-    for(rc = st->alarms; rc ; rc = rc->rrdset_next) {
-
-        buffer_sprintf(
-                wb
-                , "%s"
-                  "\t\t\t\t\"%s\": {\n"
-                  "\t\t\t\t\t\"id\": %u,\n"
-                  "\t\t\t\t\t\"status\": \"%s\",\n"
-                  "\t\t\t\t\t\"units\": \"%s\",\n"
-                  "\t\t\t\t\t\"update_every\": %d\n"
-                  "\t\t\t\t}"
-                , (alarms) ? ",\n" : ""
-                , rc->name
-                , rc->id
-                , rrdcalc_status2string(rc->status)
-                , rc->units
-                , rc->update_every
+    if (likely(!skip_volatile)) {
+        buffer_strcat(wb, ",\n\t\t\t\"alarms\": {\n");
+        size_t alarms = 0;
+        RRDCALC *rc;
+        for (rc = st->alarms; rc; rc = rc->rrdset_next) {
+            buffer_sprintf(
+                wb,
+                "%s"
+                "\t\t\t\t\"%s\": {\n"
+                "\t\t\t\t\t\"id\": %u,\n"
+                "\t\t\t\t\t\"status\": \"%s\",\n"
+                "\t\t\t\t\t\"units\": \"%s\",\n"
+                "\t\t\t\t\t\"update_every\": %d\n"
+                "\t\t\t\t}",
+                (alarms) ? ",\n" : "", rc->name, rc->id, rrdcalc_status2string(rc->status), rc->units,
+                rc->update_every);
+
+            alarms++;
+        }
+        buffer_sprintf(wb,
+                       "\n\t\t\t}"
         );
-
-        alarms++;
     }
+    buffer_strcat(wb, ",\n\t\t\t\"chart_labels\": {\n");
+    chart_labels2json(st, wb, 2);
+    buffer_strcat(wb, "\t\t\t}\n");
+
 
     buffer_sprintf(wb,
-            "\n\t\t\t}\n\t\t}"
+            "\n\t\t}"
     );
 
     rrdset_unlock(st);
diff --git a/web/api/formatters/rrdset2json.h b/web/api/formatters/rrdset2json.h
index b2669ec0a..697c84634 100644
--- a/web/api/formatters/rrdset2json.h
+++ b/web/api/formatters/rrdset2json.h
@@ -5,6 +5,6 @@
 
 #include "rrd2json.h"
 
-extern void rrdset2json(RRDSET *st, BUFFER *wb, size_t *dimensions_count, size_t *memory_used);
+extern void rrdset2json(RRDSET *st, BUFFER *wb, size_t *dimensions_count, size_t *memory_used, int skip_volatile);
 
 #endif //NETDATA_API_FORMATTER_RRDSET2JSON_H
diff --git a/web/api/formatters/ssv/Makefile.in b/web/api/formatters/ssv/Makefile.in
deleted file mode 100644
index bc30c0918..000000000
--- a/web/api/formatters/ssv/Makefile.in
+++ /dev/null
@@ -1,519 +0,0 @@
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diff --git a/web/api/formatters/ssv/README.md b/web/api/formatters/ssv/README.md
index ec85fe469..d439949a5 100644
--- a/web/api/formatters/ssv/README.md
+++ b/web/api/formatters/ssv/README.md
@@ -1,6 +1,11 @@
+<!--
+title: "SSV formatter"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/web/api/formatters/ssv/README.md
+-->
+
 # SSV formatter
 
-The SSV formatter sums all dimensions in [results of database queries](../../queries)
+The SSV formatter sums all dimensions in [results of database queries](/web/api/queries/README.md)
 to a single value and returns a list of such values showing how it changes through time.
 
 It supports the following formats:
@@ -11,7 +16,7 @@ It supports the following formats:
 | `ssvcomma` | text/plain       | a comma separated list of values |
 | `array`    | application/json | a JSON array                     |
 
-The CSV formatter respects the following API `&options=`:
+The SSV formatter respects the following API `&options=`:
 
 | option    | supported | description                                                                         |
 | :----:|:-------:|:----------|
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-# Tell versions [3.59,3.63) of GNU make to not export all variables.
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diff --git a/web/api/formatters/value/README.md b/web/api/formatters/value/README.md
index 04a0f8867..21c937080 100644
--- a/web/api/formatters/value/README.md
+++ b/web/api/formatters/value/README.md
@@ -1,6 +1,11 @@
+<!--
+title: "Value formatter"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/web/api/formatters/value/README.md
+-->
+
 # Value formatter
 
-The Value formatter presents [results of database queries](../../queries) as a single value.
+The Value formatter presents [results of database queries](/web/api/queries/README.md) as a single value.
 
 To calculate the single value to be returned, it sums the values of all dimensions.
 
@@ -13,7 +18,7 @@ The Value formatter respects the following API `&options=`:
 | `min2max` | yes       | to return the delta from the minimum value to the maximum value (across dimensions)|
 
 The Value formatter is not exposed by the API by itself.
-Instead it is used by the [`ssv`](../ssv) formatter
-and [health monitoring queries](../../../../health).
+Instead it is used by the [`ssv`](/web/api/formatters/ssv/README.md) formatter
+and [health monitoring queries](/health/README.md).
 
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