13 files changed, 1977 insertions, 0 deletions

diff --git a/web/api/exporters/Makefile.am b/web/api/exporters/Makefile.am
new file mode 100644
index 000000000..3dce98aa9
--- /dev/null
+++ b/web/api/exporters/Makefile.am
@@ -0,0 +1,13 @@
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+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/web/api/exporters/Makefile.in b/web/api/exporters/Makefile.in
new file mode 100644
index 000000000..50e4a6cda
--- /dev/null
+++ b/web/api/exporters/Makefile.in
@@ -0,0 +1,649 @@
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+	    echo "     am__remove_distdir=: am__skip_length_check=: am__skip_mode_fix=: distdir)"; \
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+		am__skip_length_check=: \
+		am__skip_mode_fix=: \
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+	      || exit 1; \
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
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diff --git a/web/api/exporters/README.md b/web/api/exporters/README.md
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/web/api/exporters/README.md
diff --git a/web/api/exporters/allmetrics.c b/web/api/exporters/allmetrics.c
new file mode 100644
index 000000000..a426db0cc
--- /dev/null
+++ b/web/api/exporters/allmetrics.c
@@ -0,0 +1,113 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "allmetrics.h"
+
+struct prometheus_output_options {
+    char *name;
+    PROMETHEUS_OUTPUT_OPTIONS flag;
+} prometheus_output_flags_root[] = {
+        { "help",       PROMETHEUS_OUTPUT_HELP       },
+        { "types",      PROMETHEUS_OUTPUT_TYPES      },
+        { "names",      PROMETHEUS_OUTPUT_NAMES      },
+        { "timestamps", PROMETHEUS_OUTPUT_TIMESTAMPS },
+        { "variables",  PROMETHEUS_OUTPUT_VARIABLES  },
+
+        // terminator
+        { NULL, PROMETHEUS_OUTPUT_NONE },
+};
+
+inline int web_client_api_request_v1_allmetrics(RRDHOST *host, struct web_client *w, char *url) {
+    int format = ALLMETRICS_SHELL;
+    const char *prometheus_server = w->client_ip;
+    uint32_t prometheus_backend_options = global_backend_options;
+    PROMETHEUS_OUTPUT_OPTIONS prometheus_output_options = PROMETHEUS_OUTPUT_TIMESTAMPS | ((global_backend_options & BACKEND_OPTION_SEND_NAMES)?PROMETHEUS_OUTPUT_NAMES:0);
+    const char *prometheus_prefix = global_backend_prefix;
+
+    while(url) {
+        char *value = mystrsep(&url, "?&");
+        if (!value || !*value) continue;
+
+        char *name = mystrsep(&value, "=");
+        if(!name || !*name) continue;
+        if(!value || !*value) continue;
+
+        if(!strcmp(name, "format")) {
+            if(!strcmp(value, ALLMETRICS_FORMAT_SHELL))
+                format = ALLMETRICS_SHELL;
+            else if(!strcmp(value, ALLMETRICS_FORMAT_PROMETHEUS))
+                format = ALLMETRICS_PROMETHEUS;
+            else if(!strcmp(value, ALLMETRICS_FORMAT_PROMETHEUS_ALL_HOSTS))
+                format = ALLMETRICS_PROMETHEUS_ALL_HOSTS;
+            else if(!strcmp(value, ALLMETRICS_FORMAT_JSON))
+                format = ALLMETRICS_JSON;
+            else
+                format = 0;
+        }
+        else if(!strcmp(name, "server")) {
+            prometheus_server = value;
+        }
+        else if(!strcmp(name, "prefix")) {
+            prometheus_prefix = value;
+        }
+        else if(!strcmp(name, "data") || !strcmp(name, "source") || !strcmp(name, "data source") || !strcmp(name, "data-source") || !strcmp(name, "data_source") || !strcmp(name, "datasource")) {
+            prometheus_backend_options = backend_parse_data_source(value, prometheus_backend_options);
+        }
+        else {
+            int i;
+            for(i = 0; prometheus_output_flags_root[i].name ; i++) {
+                if(!strcmp(name, prometheus_output_flags_root[i].name)) {
+                    if(!strcmp(value, "yes") || !strcmp(value, "1") || !strcmp(value, "true"))
+                        prometheus_output_options |= prometheus_output_flags_root[i].flag;
+                    else
+                        prometheus_output_options &= ~prometheus_output_flags_root[i].flag;
+
+                    break;
+                }
+            }
+        }
+    }
+
+    buffer_flush(w->response.data);
+    buffer_no_cacheable(w->response.data);
+
+    switch(format) {
+        case ALLMETRICS_JSON:
+            w->response.data->contenttype = CT_APPLICATION_JSON;
+            rrd_stats_api_v1_charts_allmetrics_json(host, w->response.data);
+            return 200;
+
+        case ALLMETRICS_SHELL:
+            w->response.data->contenttype = CT_TEXT_PLAIN;
+            rrd_stats_api_v1_charts_allmetrics_shell(host, w->response.data);
+            return 200;
+
+        case ALLMETRICS_PROMETHEUS:
+            w->response.data->contenttype = CT_PROMETHEUS;
+            rrd_stats_api_v1_charts_allmetrics_prometheus_single_host(
+                    host
+                    , w->response.data
+                    , prometheus_server
+                    , prometheus_prefix
+                    , prometheus_backend_options
+                    , prometheus_output_options
+            );
+            return 200;
+
+        case ALLMETRICS_PROMETHEUS_ALL_HOSTS:
+            w->response.data->contenttype = CT_PROMETHEUS;
+            rrd_stats_api_v1_charts_allmetrics_prometheus_all_hosts(
+                    host
+                    , w->response.data
+                    , prometheus_server
+                    , prometheus_prefix
+                    , prometheus_backend_options
+                    , prometheus_output_options
+            );
+            return 200;
+
+        default:
+            w->response.data->contenttype = CT_TEXT_PLAIN;
+            buffer_strcat(w->response.data, "Which format? '" ALLMETRICS_FORMAT_SHELL "', '" ALLMETRICS_FORMAT_PROMETHEUS "', '" ALLMETRICS_FORMAT_PROMETHEUS_ALL_HOSTS "' and '" ALLMETRICS_FORMAT_JSON "' are currently supported.");
+            return 400;
+    }
+}
diff --git a/web/api/exporters/allmetrics.h b/web/api/exporters/allmetrics.h
new file mode 100644
index 000000000..e8dedabf4
--- /dev/null
+++ b/web/api/exporters/allmetrics.h
@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_API_ALLMETRICS_H
+#define NETDATA_API_ALLMETRICS_H
+
+#include "web/api/formatters/rrd2json.h"
+#include "shell/allmetrics_shell.h"
+
+extern int web_client_api_request_v1_allmetrics(RRDHOST *host, struct web_client *w, char *url);
+
+#endif //NETDATA_API_ALLMETRICS_H
diff --git a/web/api/exporters/prometheus/Makefile.am b/web/api/exporters/prometheus/Makefile.am
new file mode 100644
index 000000000..19554bed8
--- /dev/null
+++ b/web/api/exporters/prometheus/Makefile.am
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+dist_noinst_DATA = \
+	README.md \
+	$(NULL)
diff --git a/web/api/exporters/prometheus/Makefile.in b/web/api/exporters/prometheus/Makefile.in
new file mode 100644
index 000000000..202f19b3d
--- /dev/null
+++ b/web/api/exporters/prometheus/Makefile.in
@@ -0,0 +1,464 @@
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diff --git a/web/api/exporters/prometheus/README.md b/web/api/exporters/prometheus/README.md
new file mode 100644
index 000000000..437f90c53
--- /dev/null
+++ b/web/api/exporters/prometheus/README.md
@@ -0,0 +1,3 @@
+# prometheus exporter
+
+The prometheus exporter for netdata is located at the [backends section for prometheus](../../../../backends/prometheus).
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+all-am: Makefile $(DATA)
+installdirs:
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
+clean: clean-am
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am:
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
+	pdf-am ps ps-am tags-am uninstall uninstall-am
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/web/api/exporters/shell/README.md b/web/api/exporters/shell/README.md
new file mode 100644
index 000000000..065afff5c
--- /dev/null
+++ b/web/api/exporters/shell/README.md
@@ -0,0 +1,64 @@
+# shell exporter
+
+Shell scripts can now query netdata:
+
+```sh
+eval "$(curl -s 'http://localhost:19999/api/v1/allmetrics')"
+```
+
+after this command, all the netdata metrics are exposed to shell. Check:
+
+```sh
+# source the metrics
+eval "$(curl -s 'http://localhost:19999/api/v1/allmetrics')"
+
+# let's see if there are variables exposed by netdata for system.cpu
+set | grep "^NETDATA_SYSTEM_CPU"
+
+NETDATA_SYSTEM_CPU_GUEST=0
+NETDATA_SYSTEM_CPU_GUEST_NICE=0
+NETDATA_SYSTEM_CPU_IDLE=95
+NETDATA_SYSTEM_CPU_IOWAIT=0
+NETDATA_SYSTEM_CPU_IRQ=0
+NETDATA_SYSTEM_CPU_NICE=0
+NETDATA_SYSTEM_CPU_SOFTIRQ=0
+NETDATA_SYSTEM_CPU_STEAL=0
+NETDATA_SYSTEM_CPU_SYSTEM=1
+NETDATA_SYSTEM_CPU_USER=4
+NETDATA_SYSTEM_CPU_VISIBLETOTAL=5
+
+# let's see the total cpu utilization of the system
+echo ${NETDATA_SYSTEM_CPU_VISIBLETOTAL}
+5
+
+# what about alarms?
+set | grep "^NETDATA_ALARM_SYSTEM_SWAP_"
+NETDATA_ALARM_SYSTEM_SWAP_RAM_IN_SWAP_STATUS=CRITICAL
+NETDATA_ALARM_SYSTEM_SWAP_RAM_IN_SWAP_VALUE=53
+NETDATA_ALARM_SYSTEM_SWAP_USED_SWAP_STATUS=CLEAR
+NETDATA_ALARM_SYSTEM_SWAP_USED_SWAP_VALUE=51
+
+# let's get the current status of the alarm 'ram in swap'
+echo ${NETDATA_ALARM_SYSTEM_SWAP_RAM_IN_SWAP_STATUS}
+CRITICAL
+
+# is it fast?
+time curl -s 'http://localhost:19999/api/v1/allmetrics' >/dev/null
+
+real  0m0,070s
+user  0m0,000s
+sys   0m0,007s
+
+# it is...
+# 0.07 seconds for curl to be loaded, connect to netdata and fetch the response back...
+```
+
+The `_VISIBLETOTAL` variable sums up all the dimensions of each chart.
+
+The format of the variables is:
+
+```sh
+NETDATA_${chart_id^^}_${dimension_id^^}="${value}"
+```
+
+The value is rounded to the closest integer, since shell script cannot process decimal numbers.
diff --git a/web/api/exporters/shell/allmetrics_shell.c b/web/api/exporters/shell/allmetrics_shell.c
new file mode 100644
index 000000000..e380deec4
--- /dev/null
+++ b/web/api/exporters/shell/allmetrics_shell.c
@@ -0,0 +1,159 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "allmetrics_shell.h"
+
+// ----------------------------------------------------------------------------
+// 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);
+}
+
diff --git a/web/api/exporters/shell/allmetrics_shell.h b/web/api/exporters/shell/allmetrics_shell.h
new file mode 100644
index 000000000..1d7611a2d
--- /dev/null
+++ b/web/api/exporters/shell/allmetrics_shell.h
@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_API_ALLMETRICS_SHELL_H
+#define NETDATA_API_ALLMETRICS_SHELL_H
+
+#include "../allmetrics.h"
+
+#define ALLMETRICS_FORMAT_SHELL                 "shell"
+#define ALLMETRICS_FORMAT_PROMETHEUS            "prometheus"
+#define ALLMETRICS_FORMAT_PROMETHEUS_ALL_HOSTS  "prometheus_all_hosts"
+#define ALLMETRICS_FORMAT_JSON                  "json"
+
+#define ALLMETRICS_SHELL                        1
+#define ALLMETRICS_PROMETHEUS                   2
+#define ALLMETRICS_JSON                         3
+#define ALLMETRICS_PROMETHEUS_ALL_HOSTS         4
+
+extern void rrd_stats_api_v1_charts_allmetrics_json(RRDHOST *host, BUFFER *wb);
+extern void rrd_stats_api_v1_charts_allmetrics_shell(RRDHOST *host, BUFFER *wb);
+
+#endif //NETDATA_API_ALLMETRICS_SHELL_H