modularize C source code (#4372)

* modularize cgroups and cmake; #4339

* modularized freeipmi.plugin

* added comment about referencing parent files

* modularized apps.plugin

* modularized proc and diskspace

* minor fixes

* modularized plugins: checks, freebsd, idlejitter, nfacct, tc, macos, plugins.d

* minor fixes 2

* modularized statsd

* modularized cgroup-network

* moved cgroup-network-helper.sh and cgroup-name.sh to cgroup.plugin

* modularized health plugin

* move rrd related info to rrd.h

* added libnetdata

* do not corrupt config.h

* use dir-objects instead of static libraries

* fixed cmake for new structure

* use absolute paths to fix LGTM

* enable automake subdir-objects and prettify its output

* use relative files at the src directory for all plugins

* fix compiler warning

* synced automake and cmake

* added config.h to cmake

* abstracted basic os functions in libnetdata/os

* fix zfs_common

* removed apps.plugin dependency on freebsd plugin

* health removed from plugins

* modularized the registry

* modularized the rest of it

* include streaming files in cmake

* use libnetdata as library

* enable silent-rules only when they are available

1 files changed, 0 insertions, 2061 deletions

diff --git a/src/rrd2json.c b/src/rrd2json.c
deleted file mode 100644
index 7920cb85e5..0000000000
--- a/src/rrd2json.c
+++ /dev/null
@@ -1,2061 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#include "common.h"
-
-void rrd_stats_api_v1_chart_with_data(RRDSET *st, BUFFER *wb, size_t *dimensions_count, size_t *memory_used)
-{
-    rrdset_rdlock(st);
-
-    buffer_sprintf(wb,
-        "\t\t{\n"
-        "\t\t\t\"id\": \"%s\",\n"
-        "\t\t\t\"name\": \"%s\",\n"
-        "\t\t\t\"type\": \"%s\",\n"
-        "\t\t\t\"family\": \"%s\",\n"
-        "\t\t\t\"context\": \"%s\",\n"
-        "\t\t\t\"title\": \"%s (%s)\",\n"
-        "\t\t\t\"priority\": %ld,\n"
-        "\t\t\t\"plugin\": \"%s\",\n"
-        "\t\t\t\"module\": \"%s\",\n"
-        "\t\t\t\"enabled\": %s,\n"
-        "\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)
-        , st->entries * st->update_every
-        , rrdset_first_entry_t(st)
-        , rrdset_last_entry_t(st)
-        , st->update_every
-        );
-
-    unsigned long memory = st->memsize;
-
-    size_t dimensions = 0;
-    RRDDIM *rd;
-    rrddim_foreach_read(rd, st) {
-        if(rrddim_flag_check(rd, RRDDIM_FLAG_HIDDEN)) continue;
-
-        memory += rd->memsize;
-
-        buffer_sprintf(
-                wb
-                , "%s"
-                        "\t\t\t\t\"%s\": { \"name\": \"%s\" }"
-                , dimensions ? ",\n" : ""
-                , rd->id
-                , rd->name
-        );
-
-        dimensions++;
-    }
-
-    if(dimensions_count) *dimensions_count += dimensions;
-    if(memory_used) *memory_used += memory;
-
-    buffer_strcat(wb, "\n\t\t\t},\n\t\t\t\"green\": ");
-    buffer_rrd_value(wb, st->green);
-    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
-        );
-
-        alarms++;
-    }
-
-    buffer_sprintf(wb,
-        "\n\t\t\t}\n\t\t}"
-        );
-
-    rrdset_unlock(st);
-}
-
-void rrd_stats_api_v1_chart(RRDSET *st, BUFFER *wb) {
-    rrd_stats_api_v1_chart_with_data(st, wb, NULL, NULL);
-}
-
-void rrd_stats_api_v1_charts(RRDHOST *host, BUFFER *wb) {
-    static char *custom_dashboard_info_js_filename = NULL;
-    size_t c, dimensions = 0, memory = 0, alarms = 0;
-    RRDSET *st;
-
-    time_t now = now_realtime_sec();
-
-    if(unlikely(!custom_dashboard_info_js_filename))
-        custom_dashboard_info_js_filename = config_get(CONFIG_SECTION_WEB, "custom dashboard_info.js", "");
-
-    buffer_sprintf(wb, "{\n"
-           "\t\"hostname\": \"%s\""
-        ",\n\t\"version\": \"%s\""
-        ",\n\t\"os\": \"%s\""
-        ",\n\t\"timezone\": \"%s\""
-        ",\n\t\"update_every\": %d"
-        ",\n\t\"history\": %ld"
-        ",\n\t\"custom_info\": \"%s\""
-        ",\n\t\"charts\": {"
-        , host->hostname
-        , host->program_version
-        , host->os
-        , host->timezone
-        , host->rrd_update_every
-        , host->rrd_history_entries
-        , custom_dashboard_info_js_filename
-        );
-
-    c = 0;
-    rrdhost_rdlock(host);
-    rrdset_foreach_read(st, host) {
-        if(rrdset_is_available_for_viewers(st)) {
-            if(c) buffer_strcat(wb, ",");
-            buffer_strcat(wb, "\n\t\t\"");
-            buffer_strcat(wb, st->id);
-            buffer_strcat(wb, "\": ");
-            rrd_stats_api_v1_chart_with_data(st, wb, &dimensions, &memory);
-
-            c++;
-            st->last_accessed_time = now;
-        }
-    }
-
-    RRDCALC *rc;
-    for(rc = host->alarms; rc ; rc = rc->next) {
-        if(rc->rrdset)
-            alarms++;
-    }
-    rrdhost_unlock(host);
-
-    buffer_sprintf(wb
-                   , "\n\t}"
-                    ",\n\t\"charts_count\": %zu"
-                    ",\n\t\"dimensions_count\": %zu"
-                    ",\n\t\"alarms_count\": %zu"
-                    ",\n\t\"rrd_memory_bytes\": %zu"
-                    ",\n\t\"hosts_count\": %zu"
-                    ",\n\t\"hosts\": ["
-                   , c
-                   , dimensions
-                   , alarms
-                   , memory
-                   , rrd_hosts_available
-    );
-
-    if(unlikely(rrd_hosts_available > 1)) {
-        rrd_rdlock();
-
-        size_t found = 0;
-        RRDHOST *h;
-        rrdhost_foreach_read(h) {
-            if(!rrdhost_should_be_removed(h, host, now)) {
-                buffer_sprintf(wb
-                               , "%s\n\t\t{"
-                                "\n\t\t\t\"hostname\": \"%s\""
-                                "\n\t\t}"
-                               , (found > 0) ? "," : ""
-                               , h->hostname
-                );
-
-                found++;
-            }
-        }
-
-        rrd_unlock();
-    }
-    else {
-        buffer_sprintf(wb
-                       , "\n\t\t{"
-                        "\n\t\t\t\"hostname\": \"%s\""
-                        "\n\t\t}"
-                       , host->hostname
-        );
-    }
-
-    buffer_sprintf(wb, "\n\t]\n}\n");
-}
-
-// ----------------------------------------------------------------------------
-// BASH
-// /api/v1/allmetrics?format=bash
-
-static inline size_t shell_name_copy(char *d, const char *s, size_t usable) {
-    size_t n;
-
-    for(n = 0; *s && n < usable ; d++, s++, n++) {
-        register char c = *s;
-
-        if(unlikely(!isalnum(c))) *d = '_';
-        else *d = (char)toupper(c);
-    }
-    *d = '\0';
-
-    return n;
-}
-
-#define SHELL_ELEMENT_MAX 100
-
-void rrd_stats_api_v1_charts_allmetrics_shell(RRDHOST *host, BUFFER *wb) {
-    rrdhost_rdlock(host);
-
-    // for each chart
-    RRDSET *st;
-    rrdset_foreach_read(st, host) {
-        calculated_number total = 0.0;
-        char chart[SHELL_ELEMENT_MAX + 1];
-        shell_name_copy(chart, st->name?st->name:st->id, SHELL_ELEMENT_MAX);
-
-        buffer_sprintf(wb, "\n# chart: %s (name: %s)\n", st->id, st->name);
-        if(rrdset_is_available_for_viewers(st)) {
-            rrdset_rdlock(st);
-
-            // for each dimension
-            RRDDIM *rd;
-            rrddim_foreach_read(rd, st) {
-                if(rd->collections_counter) {
-                    char dimension[SHELL_ELEMENT_MAX + 1];
-                    shell_name_copy(dimension, rd->name?rd->name:rd->id, SHELL_ELEMENT_MAX);
-
-                    calculated_number n = rd->last_stored_value;
-
-                    if(isnan(n) || isinf(n))
-                        buffer_sprintf(wb, "NETDATA_%s_%s=\"\"      # %s\n", chart, dimension, st->units);
-                    else {
-                        if(rd->multiplier < 0 || rd->divisor < 0) n = -n;
-                        n = calculated_number_round(n);
-                        if(!rrddim_flag_check(rd, RRDDIM_FLAG_HIDDEN)) total += n;
-                        buffer_sprintf(wb, "NETDATA_%s_%s=\"" CALCULATED_NUMBER_FORMAT_ZERO "\"      # %s\n", chart, dimension, n, st->units);
-                    }
-                }
-            }
-
-            total = calculated_number_round(total);
-            buffer_sprintf(wb, "NETDATA_%s_VISIBLETOTAL=\"" CALCULATED_NUMBER_FORMAT_ZERO "\"      # %s\n", chart, total, st->units);
-            rrdset_unlock(st);
-        }
-    }
-
-    buffer_strcat(wb, "\n# NETDATA ALARMS RUNNING\n");
-
-    RRDCALC *rc;
-    for(rc = host->alarms; rc ;rc = rc->next) {
-        if(!rc->rrdset) continue;
-
-        char chart[SHELL_ELEMENT_MAX + 1];
-        shell_name_copy(chart, rc->rrdset->name?rc->rrdset->name:rc->rrdset->id, SHELL_ELEMENT_MAX);
-
-        char alarm[SHELL_ELEMENT_MAX + 1];
-        shell_name_copy(alarm, rc->name, SHELL_ELEMENT_MAX);
-
-        calculated_number n = rc->value;
-
-        if(isnan(n) || isinf(n))
-            buffer_sprintf(wb, "NETDATA_ALARM_%s_%s_VALUE=\"\"      # %s\n", chart, alarm, rc->units);
-        else {
-            n = calculated_number_round(n);
-            buffer_sprintf(wb, "NETDATA_ALARM_%s_%s_VALUE=\"" CALCULATED_NUMBER_FORMAT_ZERO "\"      # %s\n", chart, alarm, n, rc->units);
-        }
-
-        buffer_sprintf(wb, "NETDATA_ALARM_%s_%s_STATUS=\"%s\"\n", chart, alarm, rrdcalc_status2string(rc->status));
-    }
-
-    rrdhost_unlock(host);
-}
-
-// ----------------------------------------------------------------------------
-
-void rrd_stats_api_v1_charts_allmetrics_json(RRDHOST *host, BUFFER *wb) {
-    rrdhost_rdlock(host);
-
-    buffer_strcat(wb, "{");
-
-    size_t chart_counter = 0;
-    size_t dimension_counter = 0;
-
-    // for each chart
-    RRDSET *st;
-    rrdset_foreach_read(st, host) {
-        if(rrdset_is_available_for_viewers(st)) {
-            rrdset_rdlock(st);
-
-            buffer_sprintf(wb, "%s\n"
-                    "\t\"%s\": {\n"
-                    "\t\t\"name\":\"%s\",\n"
-                    "\t\t\"context\":\"%s\",\n"
-                    "\t\t\"units\":\"%s\",\n"
-                    "\t\t\"last_updated\": %ld,\n"
-                    "\t\t\"dimensions\": {"
-                    , chart_counter?",":""
-                    , st->id
-                    , st->name
-                    , st->context
-                    , st->units
-                    , rrdset_last_entry_t(st)
-            );
-
-            chart_counter++;
-            dimension_counter = 0;
-
-            // for each dimension
-            RRDDIM *rd;
-            rrddim_foreach_read(rd, st) {
-                if(rd->collections_counter) {
-
-                    buffer_sprintf(wb, "%s\n"
-                            "\t\t\t\"%s\": {\n"
-                            "\t\t\t\t\"name\": \"%s\",\n"
-                            "\t\t\t\t\"value\": "
-                            , dimension_counter?",":""
-                            , rd->id
-                            , rd->name
-                    );
-
-                    if(isnan(rd->last_stored_value))
-                        buffer_strcat(wb, "null");
-                    else
-                        buffer_sprintf(wb, CALCULATED_NUMBER_FORMAT, rd->last_stored_value);
-
-                    buffer_strcat(wb, "\n\t\t\t}");
-
-                    dimension_counter++;
-                }
-            }
-
-            buffer_strcat(wb, "\n\t\t}\n\t}");
-            rrdset_unlock(st);
-        }
-    }
-
-    buffer_strcat(wb, "\n}");
-    rrdhost_unlock(host);
-}
-
-// ----------------------------------------------------------------------------
-
-// RRDR dimension options
-#define RRDR_EMPTY      0x01 // the dimension contains / the value is empty (null)
-#define RRDR_RESET      0x02 // the dimension contains / the value is reset
-#define RRDR_HIDDEN     0x04 // the dimension contains / the value is hidden
-#define RRDR_NONZERO    0x08 // the dimension contains / the value is non-zero
-#define RRDR_SELECTED   0x10 // the dimension is selected
-
-// RRDR result options
-#define RRDR_RESULT_OPTION_ABSOLUTE 0x00000001
-#define RRDR_RESULT_OPTION_RELATIVE 0x00000002
-
-typedef struct rrdresult {
-    RRDSET *st;         // the chart this result refers to
-
-    uint32_t result_options;    // RRDR_RESULT_OPTION_*
-
-    int d;                  // the number of dimensions
-    long n;                 // the number of values in the arrays
-    long rows;              // the number of rows used
-
-    uint8_t *od;            // the options for the dimensions
-
-    time_t *t;              // array of n timestamps
-    calculated_number *v;   // array n x d values
-    uint8_t *o;             // array n x d options
-
-    long c;                 // current line ( -1 ~ n ), ( -1 = none, use rrdr_rows() to get number of rows )
-
-    long group;             // how many collected values were grouped for each row
-    int update_every;       // what is the suggested update frequency in seconds
-
-    calculated_number min;
-    calculated_number max;
-
-    time_t before;
-    time_t after;
-
-    int has_st_lock;        // if st is read locked by us
-} RRDR;
-
-#define rrdr_rows(r) ((r)->rows)
-
-/*
-static void rrdr_dump(RRDR *r)
-{
-    long c, i;
-    RRDDIM *d;
-
-    fprintf(stderr, "\nCHART %s (%s)\n", r->st->id, r->st->name);
-
-    for(c = 0, d = r->st->dimensions; d ;c++, d = d->next) {
-        fprintf(stderr, "DIMENSION %s (%s), %s%s%s%s\n"
-                , d->id
-                , d->name
-                , (r->od[c] & RRDR_EMPTY)?"EMPTY ":""
-                , (r->od[c] & RRDR_RESET)?"RESET ":""
-                , (r->od[c] & RRDR_HIDDEN)?"HIDDEN ":""
-                , (r->od[c] & RRDR_NONZERO)?"NONZERO ":""
-                );
-    }
-
-    if(r->rows <= 0) {
-        fprintf(stderr, "RRDR does not have any values in it.\n");
-        return;
-    }
-
-    fprintf(stderr, "RRDR includes %d values in it:\n", r->rows);
-
-    // for each line in the array
-    for(i = 0; i < r->rows ;i++) {
-        calculated_number *cn = &r->v[ i * r->d ];
-        uint8_t *co = &r->o[ i * r->d ];
-
-        // print the id and the timestamp of the line
-        fprintf(stderr, "%ld %ld ", i + 1, r->t[i]);
-
-        // for each dimension
-        for(c = 0, d = r->st->dimensions; d ;c++, d = d->next) {
-            if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
-            if(unlikely(!(r->od[c] & RRDR_NONZERO))) continue;
-
-            if(co[c] & RRDR_EMPTY)
-                fprintf(stderr, "null ");
-            else
-                fprintf(stderr, CALCULATED_NUMBER_FORMAT " %s%s%s%s "
-                    , cn[c]
-                    , (co[c] & RRDR_EMPTY)?"E":" "
-                    , (co[c] & RRDR_RESET)?"R":" "
-                    , (co[c] & RRDR_HIDDEN)?"H":" "
-                    , (co[c] & RRDR_NONZERO)?"N":" "
-                    );
-        }
-
-        fprintf(stderr, "\n");
-    }
-}
-*/
-
-void rrdr_disable_not_selected_dimensions(RRDR *r, uint32_t options, const char *dims) {
-    rrdset_check_rdlock(r->st);
-
-    if(unlikely(!dims || !*dims || (dims[0] == '*' && dims[1] == '\0'))) return;
-
-    int match_ids = 0, match_names = 0;
-
-    if(unlikely(options & RRDR_OPTION_MATCH_IDS))
-        match_ids = 1;
-    if(unlikely(options & RRDR_OPTION_MATCH_NAMES))
-        match_names = 1;
-
-    if(likely(!match_ids && !match_names))
-        match_ids = match_names = 1;
-
-    SIMPLE_PATTERN *pattern = simple_pattern_create(dims, ",|\t\r\n\f\v", SIMPLE_PATTERN_EXACT);
-
-    RRDDIM *d;
-    long c, dims_selected = 0, dims_not_hidden_not_zero = 0;
-    for(c = 0, d = r->st->dimensions; d ;c++, d = d->next) {
-        if(    (match_ids   && simple_pattern_matches(pattern, d->id))
-            || (match_names && simple_pattern_matches(pattern, d->name))
-                ) {
-            r->od[c] |= RRDR_SELECTED;
-            if(unlikely(r->od[c] & RRDR_HIDDEN)) r->od[c] &= ~RRDR_HIDDEN;
-            dims_selected++;
-
-            // since the user needs this dimension
-            // make it appear as NONZERO, to return it
-            // even if the dimension has only zeros
-            // unless option non_zero is set
-            if(unlikely(!(options & RRDR_OPTION_NONZERO)))
-                r->od[c] |= RRDR_NONZERO;
-
-            // count the visible dimensions
-            if(likely(r->od[c] & RRDR_NONZERO))
-                dims_not_hidden_not_zero++;
-        }
-        else {
-            r->od[c] |= RRDR_HIDDEN;
-            if(unlikely(r->od[c] & RRDR_SELECTED)) r->od[c] &= ~RRDR_SELECTED;
-        }
-    }
-    simple_pattern_free(pattern);
-
-    // check if all dimensions are hidden
-    if(unlikely(!dims_not_hidden_not_zero && dims_selected)) {
-        // there are a few selected dimensions
-        // but they are all zero
-        // enable the selected ones
-        // to avoid returning an empty chart
-        for(c = 0, d = r->st->dimensions; d ;c++, d = d->next)
-            if(unlikely(r->od[c] & RRDR_SELECTED))
-                r->od[c] |= RRDR_NONZERO;
-    }
-}
-
-void rrdr_buffer_print_format(BUFFER *wb, uint32_t format)
-{
-    switch(format) {
-    case DATASOURCE_JSON:
-        buffer_strcat(wb, DATASOURCE_FORMAT_JSON);
-        break;
-
-    case DATASOURCE_DATATABLE_JSON:
-        buffer_strcat(wb, DATASOURCE_FORMAT_DATATABLE_JSON);
-        break;
-
-    case DATASOURCE_DATATABLE_JSONP:
-        buffer_strcat(wb, DATASOURCE_FORMAT_DATATABLE_JSONP);
-        break;
-
-    case DATASOURCE_JSONP:
-        buffer_strcat(wb, DATASOURCE_FORMAT_JSONP);
-        break;
-
-    case DATASOURCE_SSV:
-        buffer_strcat(wb, DATASOURCE_FORMAT_SSV);
-        break;
-
-    case DATASOURCE_CSV:
-        buffer_strcat(wb, DATASOURCE_FORMAT_CSV);
-        break;
-
-    case DATASOURCE_TSV:
-        buffer_strcat(wb, DATASOURCE_FORMAT_TSV);
-        break;
-
-    case DATASOURCE_HTML:
-        buffer_strcat(wb, DATASOURCE_FORMAT_HTML);
-        break;
-
-    case DATASOURCE_JS_ARRAY:
-        buffer_strcat(wb, DATASOURCE_FORMAT_JS_ARRAY);
-        break;
-
-    case DATASOURCE_SSV_COMMA:
-        buffer_strcat(wb, DATASOURCE_FORMAT_SSV_COMMA);
-        break;
-
-    default:
-        buffer_strcat(wb, "unknown");
-        break;
-    }
-}
-
-uint32_t rrdr_check_options(RRDR *r, uint32_t options, const char *dims)
-{
-    rrdset_check_rdlock(r->st);
-
-    (void)dims;
-
-    if(options & RRDR_OPTION_NONZERO) {
-        long i;
-
-        // commented due to #1514
-
-        //if(dims && *dims) {
-            // the caller wants specific dimensions
-            // disable NONZERO option
-            // to make sure we don't accidentally prevent
-            // the specific dimensions from being returned
-            // i = 0;
-        //}
-        //else {
-            // find how many dimensions are not zero
-            long c;
-            RRDDIM *rd;
-            for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ; c++, rd = rd->next) {
-                if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
-                if(unlikely(!(r->od[c] & RRDR_NONZERO))) continue;
-                i++;
-            }
-        //}
-
-        // if with nonzero we get i = 0 (no dimensions will be returned)
-        // disable nonzero to show all dimensions
-        if(!i) options &= ~RRDR_OPTION_NONZERO;
-    }
-
-    return options;
-}
-
-void rrdr_json_wrapper_begin(RRDR *r, BUFFER *wb, uint32_t format, uint32_t options, int string_value)
-{
-    rrdset_check_rdlock(r->st);
-
-    long rows = rrdr_rows(r);
-    long c, i;
-    RRDDIM *rd;
-
-    //info("JSONWRAPPER(): %s: BEGIN", r->st->id);
-    char kq[2] = "",                    // key quote
-        sq[2] = "";                     // string quote
-
-    if( options & RRDR_OPTION_GOOGLE_JSON ) {
-        kq[0] = '\0';
-        sq[0] = '\'';
-    }
-    else {
-        kq[0] = '"';
-        sq[0] = '"';
-    }
-
-    buffer_sprintf(wb, "{\n"
-            "   %sapi%s: 1,\n"
-            "   %sid%s: %s%s%s,\n"
-            "   %sname%s: %s%s%s,\n"
-            "   %sview_update_every%s: %d,\n"
-            "   %supdate_every%s: %d,\n"
-            "   %sfirst_entry%s: %u,\n"
-            "   %slast_entry%s: %u,\n"
-            "   %sbefore%s: %u,\n"
-            "   %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, 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)r->before
-            , kq, kq, (uint32_t)r->after
-            , kq, kq);
-
-    for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
-        if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
-        if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
-
-        if(i) buffer_strcat(wb, ", ");
-        buffer_strcat(wb, sq);
-        buffer_strcat(wb, rd->name);
-        buffer_strcat(wb, sq);
-        i++;
-    }
-    if(!i) {
-#ifdef NETDATA_INTERNAL_CHECKS
-        error("RRDR is empty for %s (RRDR has %d dimensions, options is 0x%08x)", r->st->id, r->d, options);
-#endif
-        rows = 0;
-        buffer_strcat(wb, sq);
-        buffer_strcat(wb, "no data");
-        buffer_strcat(wb, sq);
-    }
-
-    buffer_sprintf(wb, "],\n"
-            "   %sdimension_ids%s: ["
-            , kq, kq);
-
-    for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
-        if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
-        if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
-
-        if(i) buffer_strcat(wb, ", ");
-        buffer_strcat(wb, sq);
-        buffer_strcat(wb, rd->id);
-        buffer_strcat(wb, sq);
-        i++;
-    }
-    if(!i) {
-        rows = 0;
-        buffer_strcat(wb, sq);
-        buffer_strcat(wb, "no data");
-        buffer_strcat(wb, sq);
-    }
-
-    buffer_sprintf(wb, "],\n"
-            "   %slatest_values%s: ["
-            , kq, kq);
-
-    for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
-        if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
-        if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
-
-        if(i) buffer_strcat(wb, ", ");
-        i++;
-
-        storage_number n = rd->values[rrdset_last_slot(r->st)];
-
-        if(!does_storage_number_exist(n))
-            buffer_strcat(wb, "null");
-        else
-            buffer_rrd_value(wb, unpack_storage_number(n));
-    }
-    if(!i) {
-        rows = 0;
-        buffer_strcat(wb, "null");
-    }
-
-    buffer_sprintf(wb, "],\n"
-            "   %sview_latest_values%s: ["
-            , kq, kq);
-
-    i = 0;
-    if(rows) {
-        calculated_number total = 1;
-
-        if(unlikely(options & RRDR_OPTION_PERCENTAGE)) {
-            total = 0;
-            for(c = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
-                calculated_number *cn = &r->v[ (0) * r->d ];
-                calculated_number n = cn[c];
-
-                if(likely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
-                    n = -n;
-
-                total += n;
-            }
-            // prevent a division by zero
-            if(total == 0) total = 1;
-        }
-
-        for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
-            if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
-            if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
-
-            if(i) buffer_strcat(wb, ", ");
-            i++;
-
-            calculated_number *cn = &r->v[ (0) * r->d ];
-            uint8_t *co = &r->o[ (0) * r->d ];
-            calculated_number n = cn[c];
-
-            if(co[c] & RRDR_EMPTY) {
-                if(options & RRDR_OPTION_NULL2ZERO)
-                    buffer_strcat(wb, "0");
-                else
-                    buffer_strcat(wb, "null");
-            }
-            else {
-                if(unlikely((options & RRDR_OPTION_ABSOLUTE) && n < 0))
-                    n = -n;
-
-                if(unlikely(options & RRDR_OPTION_PERCENTAGE))
-                    n = n * 100 / total;
-
-                buffer_rrd_value(wb, n);
-            }
-        }
-    }
-    if(!i) {
-        rows = 0;
-        buffer_strcat(wb, "null");
-    }
-
-    buffer_sprintf(wb, "],\n"
-            "   %sdimensions%s: %ld,\n"
-            "   %spoints%s: %ld,\n"
-            "   %sformat%s: %s"
-            , kq, kq, i
-            , kq, kq, rows
-            , kq, kq, sq
-            );
-
-    rrdr_buffer_print_format(wb, format);
-
-    buffer_sprintf(wb, "%s,\n"
-            "   %sresult%s: "
-            , sq
-            , kq, kq
-            );
-
-    if(string_value) buffer_strcat(wb, sq);
-    //info("JSONWRAPPER(): %s: END", r->st->id);
-}
-
-void rrdr_json_wrapper_end(RRDR *r, BUFFER *wb, uint32_t format, uint32_t options, int string_value)
-{
-    (void)format;
-
-    char kq[2] = "",                    // key quote
-        sq[2] = "";                     // string quote
-
-    if( options & RRDR_OPTION_GOOGLE_JSON ) {
-        kq[0] = '\0';
-        sq[0] = '\'';
-    }
-    else {
-        kq[0] = '"';
-        sq[0] = '"';
-    }
-
-    if(string_value) buffer_strcat(wb, sq);
-
-    buffer_sprintf(wb, ",\n %smin%s: ", kq, kq);
-    buffer_rrd_value(wb, r->min);
-    buffer_sprintf(wb, ",\n %smax%s: ", kq, kq);
-    buffer_rrd_value(wb, r->max);
-    buffer_strcat(wb, "\n}\n");
-}
-
-#define JSON_DATES_JS 1
-#define JSON_DATES_TIMESTAMP 2
-
-static void rrdr2json(RRDR *r, BUFFER *wb, uint32_t options, int datatable)
-{
-    rrdset_check_rdlock(r->st);
-
-    //info("RRD2JSON(): %s: BEGIN", r->st->id);
-    int row_annotations = 0, dates, dates_with_new = 0;
-    char kq[2] = "",                    // key quote
-        sq[2] = "",                     // string quote
-        pre_label[101] = "",            // before each label
-        post_label[101] = "",           // after each label
-        pre_date[101] = "",             // the beginning of line, to the date
-        post_date[101] = "",            // closing the date
-        pre_value[101] = "",            // before each value
-        post_value[101] = "",           // after each value
-        post_line[101] = "",            // at the end of each row
-        normal_annotation[201] = "",    // default row annotation
-        overflow_annotation[201] = "",  // overflow row annotation
-        data_begin[101] = "",           // between labels and values
-        finish[101] = "";               // at the end of everything
-
-    if(datatable) {
-        dates = JSON_DATES_JS;
-        if( options & RRDR_OPTION_GOOGLE_JSON ) {
-            kq[0] = '\0';
-            sq[0] = '\'';
-        }
-        else {
-            kq[0] = '"';
-            sq[0] = '"';
-        }
-        row_annotations = 1;
-        snprintfz(pre_date,   100, "        {%sc%s:[{%sv%s:%s", kq, kq, kq, kq, sq);
-        snprintfz(post_date,  100, "%s}", sq);
-        snprintfz(pre_label,  100, ",\n     {%sid%s:%s%s,%slabel%s:%s", kq, kq, sq, sq, kq, kq, sq);
-        snprintfz(post_label, 100, "%s,%spattern%s:%s%s,%stype%s:%snumber%s}", sq, kq, kq, sq, sq, kq, kq, sq, sq);
-        snprintfz(pre_value,  100, ",{%sv%s:", kq, kq);
-        strcpy(post_value,         "}");
-        strcpy(post_line,          "]}");
-        snprintfz(data_begin, 100, "\n  ],\n    %srows%s:\n [\n", kq, kq);
-        strcpy(finish,             "\n  ]\n}");
-
-        snprintfz(overflow_annotation, 200, ",{%sv%s:%sRESET OR OVERFLOW%s},{%sv%s:%sThe counters have been wrapped.%s}", kq, kq, sq, sq, kq, kq, sq, sq);
-        snprintfz(normal_annotation,   200, ",{%sv%s:null},{%sv%s:null}", kq, kq, kq, kq);
-
-        buffer_sprintf(wb, "{\n %scols%s:\n [\n", kq, kq);
-        buffer_sprintf(wb, "        {%sid%s:%s%s,%slabel%s:%stime%s,%spattern%s:%s%s,%stype%s:%sdatetime%s},\n", kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq);
-        buffer_sprintf(wb, "        {%sid%s:%s%s,%slabel%s:%s%s,%spattern%s:%s%s,%stype%s:%sstring%s,%sp%s:{%srole%s:%sannotation%s}},\n", kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, kq, kq, sq, sq);
-        buffer_sprintf(wb, "        {%sid%s:%s%s,%slabel%s:%s%s,%spattern%s:%s%s,%stype%s:%sstring%s,%sp%s:{%srole%s:%sannotationText%s}}", kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, sq, sq, kq, kq, kq, kq, sq, sq);
-
-        // remove the valueobjects flag
-        // google wants its own keys
-        if(options & RRDR_OPTION_OBJECTSROWS)
-            options &= ~RRDR_OPTION_OBJECTSROWS;
-    }
-    else {
-        kq[0] = '"';
-        sq[0] = '"';
-        if(options & RRDR_OPTION_GOOGLE_JSON) {
-            dates = JSON_DATES_JS;
-            dates_with_new = 1;
-        }
-        else {
-            dates = JSON_DATES_TIMESTAMP;
-            dates_with_new = 0;
-        }
-        if( options & RRDR_OPTION_OBJECTSROWS )
-            strcpy(pre_date, "      { ");
-        else
-            strcpy(pre_date, "      [ ");
-        strcpy(pre_label,  ", \"");
-        strcpy(post_label, "\"");
-        strcpy(pre_value,  ", ");
-        if( options & RRDR_OPTION_OBJECTSROWS )
-            strcpy(post_line, "}");
-        else
-            strcpy(post_line, "]");
-        snprintfz(data_begin, 100, "],\n    %sdata%s:\n [\n", kq, kq);
-        strcpy(finish,             "\n  ]\n}");
-
-        buffer_sprintf(wb, "{\n %slabels%s: [", kq, kq);
-        buffer_sprintf(wb, "%stime%s", sq, sq);
-    }
-
-    // -------------------------------------------------------------------------
-    // print the JSON header
-
-    long c, i;
-    RRDDIM *rd;
-
-    // print the header lines
-    for(c = 0, i = 0, rd = r->st->dimensions; rd && c < r->d ;c++, rd = rd->next) {
-        if(unlikely(r->od[c] & RRDR_HIDDEN)) continue;
-        if(unlikely((options & RRDR_OPTION_NONZERO) && !(r->od[c] & RRDR_NONZERO))) continue;
-
-        buffer_strcat(wb, pre_label);
-        buffer_strcat(wb, rd->name);
-        buffer_strcat(wb, post_label);
-        i++;
-    }
-    if(!i) {
-        buffer_strcat(wb, pre_label);
-        buffer_strcat(wb, "no data");
-        buffer_strcat(wb, post_label);
-    }
-
-    // print the begin of row data
-    buffer_strcat(wb, data_begin);
-
-    // if all dimensions are hidden, print a null
-    if(!i) {
-        buffer_strcat(wb, finish);
-        return;
-    }
-
-    long start = 0, end = rrdr_rows(r), step = 1;
-    if((options & RRDR_OPTION_REVERSED)) {
-        start = rrdr_rows(r) - 1;
-        end = -1;
-        step = -1;
-    }
-
-    // for each line in the array
-    calculated_number total = 1;
-    for(i = start; i != end ;i += step) {
-        calculated_number *cn = &r->v[ i * r->d ];
-        uint8_t *co = &r->o[ i * r->d ];
-
-        time_t now = r->t[i];
-
-        if(dates == JSON_DATES_JS) {
-            // generate the local date time
-            struct tm tmbuf, *tm = localtime_r(&now, &tmbuf);
-            if(!tm) { error("localtime_r() failed."); continue; }
-
-            if(likely(i != start)) buffer_strcat(wb, ",\n");
-            buffer_strcat(wb, pre_date);
-
-            if( options & RRDR_OPTION_OBJECTSROWS )
-                buffer_sprintf(wb, "%stime%s: ", kq, kq);
-
-            if(dates_with_new)
-                buffer_strcat(wb, "new ");
-
-            buffer_jsdate(wb, tm->tm_year + 1900, tm->tm_mon, tm->tm_mday, tm->tm_hour, tm->tm_min, tm->tm_sec);
-
-            buffer_strcat(wb, post_date);
-
-            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) {
-                    if(co[c] & RRDR_RESET) {
-                        buffer_strcat(wb, overflow_annotation);
-                        annotation_found = 1;